/* -------------------------------------------------------------------------
 * customer_dialogue.css — Phase 96A
 * Customer-facing dialogue surface mounted inside #user-surface.
 * Design tokens reused from styles.css :root (--bg, --ink, --accent, etc.).
 * Mobile breakpoints aligned with existing 1240/680/520 cascade.
 *
 * Scope: every selector is prefixed with .cu- (customer) or scoped under
 * #user-surface .cu-shell to avoid collisions with admin styles.
 * ----------------------------------------------------------------------- */

/* The dialogue controller uses this for unavailable notices and transient UI.
   It must work without loading the separate administrator stylesheet. */
.cu-hidden {
  display: none !important;
}

/* ---- Legacy stub container — keeps legacy IDs in DOM but invisible ---- */
#user-surface .cu-legacy-stubs {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  /* Inputs inside still receive events from app.js mirroring code. */
}

/* When user surface is hidden via hash-route swap (admin route),
   .surface-panel.hidden hides both legacy stubs and cu-shell together. */

/* ---- Top-level customer shell ---- */
#user-surface .cu-shell {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 28px 32px 40px;
  background:
    linear-gradient(180deg, rgba(255, 251, 244, 0.96), rgba(255, 251, 244, 0.78));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  min-height: 60vh;
}

/* When the page-head says we're in mock mode, we tint the shell. */
#user-surface .cu-shell.cu-mock {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(255, 230, 200, 0.55),
      rgba(255, 230, 200, 0.55) 16px,
      rgba(255, 240, 220, 0.55) 16px,
      rgba(255, 240, 220, 0.55) 32px
    );
}

/* ---- Mock-mode banner — persistent, non-dismissible ---- */
.cu-mock-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: var(--warning);
  color: #fff8ee;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.78rem;
  border-radius: 12px;
}

.cu-mock-banner .cu-mock-banner-tag {
  background: rgba(0, 0, 0, 0.18);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
}

.cu-mock-banner.cu-hidden {
  display: none;
}

/* ---- Header — title + subtitle ---- */
.cu-header h2.cu-title {
  margin: 0 0 6px 0;
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  letter-spacing: -0.01em;
}
.cu-header p.cu-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 64ch;
}

/* ---- Cabinet truth block ------------------------------------------------ */
.cu-cabinet-note {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px 18px;
  background: rgba(14, 139, 115, 0.06);
  border: 1px solid rgba(14, 139, 115, 0.16);
  border-radius: 18px;
}
.cu-cabinet-note-title {
  margin: 0 0 6px;
  font-size: 1rem;
}
.cu-cabinet-note-body {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 72ch;
}
.cu-cabinet-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.cu-cabinet-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(24, 32, 29, 0.1);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 600;
}
.cu-cabinet-chip-warn {
  color: #8b4f12;
  background: rgba(253, 231, 194, 0.85);
  border-color: rgba(139, 79, 18, 0.18);
}
.cu-cabinet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}
.cu-cabinet-card {
  padding: 14px 14px 12px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(24, 32, 29, 0.1);
  border-radius: 14px;
}
.cu-cabinet-card-docs {
  grid-column: 1 / -1;
}
.cu-cabinet-card-title {
  margin: 0 0 6px;
  font-size: 0.92rem;
}
.cu-cabinet-card-body {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
}
.cu-card-checklist {
  margin: 14px 0 0;
  padding: 0 0 0 18px;
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 0.84rem;
  line-height: 1.45;
}
.cu-card-checklist li {
  margin: 0;
}
.cu-card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}
.cu-card-links a {
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
}
.cu-card-links a:hover {
  text-decoration: underline;
}

.cu-card-links .cu-disabled-link,
.cu-toolbar .cu-tool-disabled {
  display: inline-flex;
  align-items: center;
  opacity: 0.48;
  cursor: default;
  pointer-events: none;
  user-select: none;
}

.cu-card-links .cu-disabled-link {
  min-height: 34px;
  padding: 0 11px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.cu-cabinet-card-docs.is-beta-disabled {
  opacity: 0.62;
  filter: saturate(0.4);
}
.cu-card-state {
  margin-top: 10px;
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(89, 99, 94, 0.14);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}
.cu-doc-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.cu-doc-panel {
  padding: 12px;
  background: rgba(252, 248, 240, 0.72);
  border: 1px solid rgba(24, 32, 29, 0.08);
  border-radius: 12px;
}
.cu-doc-panel-title {
  margin: 0 0 8px;
  font-size: 0.84rem;
  color: var(--ink);
}
.cu-doc-panel-body {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
}
.cu-doc-state-list,
.cu-doc-contract-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.cu-doc-state-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cu-doc-state-list li {
  display: grid;
  gap: 4px;
}
.cu-doc-state-label {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.cu-doc-state-value {
  font-size: 0.81rem;
  color: var(--muted);
  line-height: 1.45;
}
.cu-doc-contract-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cu-doc-contract-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
}
.cu-doc-backend-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 104px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.015em;
  font-family: inherit;
  border: 1px solid color-mix(in srgb, var(--cu-v2-line-strong) 62%, transparent);
}
.cu-doc-backend-pill-pending {
  background: rgba(89, 99, 94, 0.12);
  border-color: rgba(89, 99, 94, 0.16);
  color: #3f4a45;
}
.cu-doc-backend-pill-queued {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.16);
  color: #1d4ed8;
}
.cu-doc-backend-pill-active {
  background: rgba(14, 139, 115, 0.12);
  border-color: rgba(14, 139, 115, 0.18);
  color: #0f766e;
}
.cu-doc-backend-pill-caution {
  background: rgba(217, 119, 6, 0.12);
  border-color: rgba(217, 119, 6, 0.18);
  color: #9a3412;
}
.cu-doc-backend-pill-blocked {
  background: rgba(220, 38, 38, 0.12);
  border-color: rgba(220, 38, 38, 0.18);
  color: #991b1b;
}
.cu-doc-backend-pill-muted {
  background: rgba(75, 85, 99, 0.12);
  border-color: rgba(75, 85, 99, 0.18);
  color: #374151;
}
.cu-doc-contract-copy {
  min-width: 0;
}
.cu-doc-contract-title {
  display: block;
  margin: 0 0 4px;
  font-size: 0.8rem;
  color: var(--ink);
}
.cu-doc-contract-body {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

/* ---- Session toolbar (history, clear, copy, export, language) ---- */
.cu-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 10px 0 0;
  border-top: 1px dashed var(--line);
}
.cu-toolbar .cu-tool-btn {
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 120ms ease, transform 120ms ease;
}
.cu-toolbar .cu-tool-btn:hover {
  background: #fff;
}
.cu-toolbar .cu-tool-btn:active {
  transform: translateY(1px);
}
.cu-toolbar .cu-tool-btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}
.cu-toolbar .cu-lang-toggle {
  margin-left: auto;
  display: flex;
  gap: 4px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
}
.cu-toolbar .cu-lang-toggle button {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px 10px;
  cursor: pointer;
  color: var(--ink);
}
.cu-toolbar .cu-lang-toggle button.cu-active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---- Conversation thread (scrollable) ---- */
.cu-thread-region {
  display: flex;
  flex-direction: column;
  gap: 18px;
  flex: 1;
  min-height: 260px;
  max-height: 65vh;
  overflow-y: auto;
  padding: 4px 4px 4px 0;
}

/* Current message DOM emitted by customer_dialogue.js */
.cu-msg {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cu-msg-head {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cu-msg-role {
  border-radius: 999px;
  padding: 2px 10px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
}
.cu-msg-body {
  white-space: pre-wrap;
  word-wrap: break-word;
}
.cu-msg-user .cu-msg-body {
  background: var(--accent);
  color: #fff;
  padding: 14px 18px;
  border-radius: 18px 18px 6px 18px;
  align-self: flex-end;
  max-width: min(80%, 660px);
}
.cu-msg-system .cu-msg-body {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px 20px;
  border-radius: 18px 18px 18px 6px;
  max-width: min(94%, 820px);
}

.cu-msg-loading .cu-msg-body {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 14px 18px;
  border-radius: 18px 18px 18px 6px;
  max-width: min(94%, 760px);
  color: var(--muted);
}

.cu-loading-dots {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.cu-loading-dots span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  animation: cu-pulse 1.1s ease-in-out infinite;
}

.cu-loading-dots span:nth-child(2) { animation-delay: 0.18s; }
.cu-loading-dots span:nth-child(3) { animation-delay: 0.36s; }

.cu-loading-copy {
  font-size: 0.88rem;
  line-height: 1.5;
}

/* Empty-state ---------------------------------------------------------- */
.cu-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 36px 24px;
  border: 1px dashed var(--line);
  border-radius: 18px;
  color: var(--muted);
  gap: 8px;
}
.cu-empty-state .cu-empty-title {
  font-size: 1.05rem;
  color: var(--ink);
  font-weight: 600;
}
.cu-empty-state .cu-empty-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 10px;
}
.cu-empty-state .cu-empty-suggestions button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 0.85rem;
}
.cu-empty-state .cu-empty-suggestions button:hover {
  background: var(--accent-strong);
}

/* ---- Individual conversation turns ---- */
.cu-turn {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cu-turn .cu-turn-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cu-turn .cu-turn-meta .cu-role-pill {
  border-radius: 999px;
  padding: 2px 10px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
}

.cu-turn-user .cu-turn-body {
  background: var(--accent);
  color: #fff;
  padding: 14px 18px;
  border-radius: 18px 18px 6px 18px;
  align-self: flex-end;
  max-width: min(80%, 660px);
}

.cu-turn-system .cu-turn-body {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px 20px;
  border-radius: 18px 18px 18px 6px;
  max-width: min(94%, 820px);
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Loading / thinking turn */
.cu-turn-loading .cu-turn-body {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 14px 18px;
  border-radius: 18px;
  max-width: 60%;
  color: var(--muted);
}
.cu-turn-loading .cu-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: cu-pulse 1.1s ease-in-out infinite;
}
.cu-turn-loading .cu-dot:nth-child(2) { animation-delay: 0.18s; }
.cu-turn-loading .cu-dot:nth-child(3) { animation-delay: 0.36s; }
@keyframes cu-pulse {
  0%, 60%, 100% { opacity: 0.25; transform: scale(0.85); }
  30% { opacity: 1; transform: scale(1.1); }
}

/* ---- Answer-kind pills inside the answer turn ---- */
.cu-kind-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.cu-kind-pill {
  border-radius: 999px;
  padding: 3px 12px;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}
.cu-kind-pill.cu-kind-grounded   { background: #c9ecdf; color: #0a5a4c; }
.cu-kind-pill.cu-kind-completed  { background: #e6e0d2; color: #54381f; }
.cu-kind-pill.cu-kind-clarifying { background: #fde7c2; color: #8b4f12; }
.cu-kind-pill.cu-kind-insufficient { background: #ffe1d2; color: #8a2c12; }
.cu-kind-pill.cu-kind-failed     { background: #f6cccc; color: #6b1f1f; }
.cu-kind-pill.cu-kind-idle       { background: var(--bg-alt); color: var(--muted); }

.cu-kind-pill.cu-conf {
  background: rgba(14, 139, 115, 0.12);
  color: var(--accent-strong);
}

/* ---- Citations strip below an answer ---- */
.cu-citations {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cu-citations-head {
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cu-citation {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.cu-citation .cu-cite-title {
  font-weight: 600;
  color: var(--ink);
  font-size: 0.95rem;
}
.cu-citation .cu-cite-meta {
  display: flex;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--muted);
  flex-wrap: wrap;
}
.cu-citation .cu-cite-link {
  font-size: 0.82rem;
  color: var(--accent-strong);
  word-break: break-all;
}
.cu-citation .cu-cite-link.cu-cite-link-none {
  color: var(--muted);
  font-style: italic;
}
.cu-citation .cu-cite-snippet {
  font-size: 0.85rem;
  color: var(--ink);
  border-left: 3px solid var(--accent);
  padding-left: 10px;
  margin-top: 4px;
}

/* ---- Insufficient / clarification / error inline cards ---- */
.cu-inline-card {
  border-radius: 14px;
  padding: 14px 18px;
  border: 1px solid var(--line);
}
.cu-inline-card.cu-insufficient {
  background: #fff4eb;
  border-color: rgba(173, 65, 37, 0.35);
}
.cu-inline-card.cu-clarifying {
  background: #fef3df;
  border-color: rgba(139, 79, 18, 0.35);
}
.cu-inline-card.cu-error {
  background: #fde2e2;
  border-color: rgba(107, 31, 31, 0.35);
}
.cu-inline-card h4 {
  margin: 0 0 4px;
  font-size: 0.95rem;
}
.cu-inline-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink);
}

/* ---- Composer (question input + send button) ---- */
.cu-composer-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.cu-composer-row textarea.cu-question {
  resize: vertical;
  min-height: 64px;
  max-height: 220px;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
}
.cu-composer-row textarea.cu-question:focus {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.cu-composer-row textarea.cu-question:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}
.cu-composer-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.cu-mode-toggle {
  display: inline-flex;
  align-items: stretch;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}
.cu-mode-label {
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
}
.cu-mode-btn {
  min-height: 44px;
  border: 0;
  border-radius: 12px;
  padding: 7px 10px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  display: grid;
  gap: 1px;
  text-align: left;
}
.cu-mode-btn strong {
  color: var(--ink);
  font-size: 0.82rem;
}
.cu-mode-btn small {
  font-size: 0.68rem;
}
.cu-mode-btn.cu-active {
  background: var(--accent-strong);
  color: #fff;
}
.cu-mode-btn.cu-active strong {
  color: #fff;
}
.cu-mode-btn:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}
.cu-mode-btn.cu-mode-unavailable {
  border-style: dashed;
  opacity: 0.64;
}
.cu-mode-btn.cu-mode-unavailable strong {
  color: var(--muted);
}
.cu-composer-actions .cu-send {
  background: var(--accent-strong);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 10px 22px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.02em;
}
.cu-composer-actions .cu-send:disabled {
  background: var(--muted);
  cursor: not-allowed;
  opacity: 0.7;
}
.cu-composer-actions .cu-send:hover:not(:disabled) {
  background: #084236;
}
.cu-composer-actions .cu-send:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.cu-auth-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--muted);
  flex: 1;
  min-width: 180px;
}
.cu-auth-field input {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 0.88rem;
  color: var(--ink);
  background: #fff;
}

/* ---- Status microcopy under composer ---- */
.cu-status-line {
  font-size: 0.78rem;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: center;
}
.cu-status-line.cu-state-error,
.cu-status-line.cu-status-error { color: var(--warning); }
.cu-status-line.cu-state-loading,
.cu-status-line.cu-status-loading { color: var(--accent-strong); }
.cu-status-line.cu-status-warning { color: #8a5a12; }

/* ---- Toast for copy/export ---- */
.cu-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff8ee;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 9999;
}
.cu-toast.cu-toast-visible {
  opacity: 1;
}

/* ---- Responsive: tablet ≤ 1240px ---- */
@media (max-width: 1240px) {
  #user-surface .cu-shell {
    padding: 24px 24px 32px;
  }
  .cu-turn-user .cu-turn-body { max-width: min(86%, 600px); }
  .cu-turn-system .cu-turn-body { max-width: 100%; }
}

/* ---- Responsive: mobile-large ≤ 680px ---- */
@media (max-width: 680px) {
  #user-surface .cu-shell {
    padding: 18px 16px 28px;
    border-radius: 18px;
    gap: 16px;
  }
  .cu-header h2.cu-title {
    font-size: 1.25rem;
  }
  .cu-header p.cu-subtitle {
    font-size: 0.85rem;
  }
  .cu-cabinet-note {
    padding: 14px 14px 12px;
  }
  .cu-thread-region {
    min-height: 220px;
    max-height: 55vh;
  }
  .cu-toolbar {
    gap: 6px;
  }
  .cu-toolbar .cu-tool-btn {
    padding: 6px 10px;
    font-size: 0.78rem;
  }
  .cu-toolbar .cu-lang-toggle {
    margin-left: 0;
    width: 100%;
    justify-content: flex-end;
  }
  .cu-turn-user .cu-turn-body { max-width: 92%; padding: 12px 14px; }
  .cu-turn-system .cu-turn-body { max-width: 100%; padding: 14px 16px; }
  .cu-msg-user .cu-msg-body { max-width: 92%; padding: 12px 14px; }
  .cu-msg-system .cu-msg-body { max-width: 100%; padding: 14px 16px; }
  .cu-citation .cu-cite-link { font-size: 0.78rem; }
  .cu-composer-row {
    padding: 12px;
    gap: 6px;
  }
  .cu-composer-actions {
    gap: 8px;
  }
  .cu-mode-toggle {
    width: 100%;
    flex-wrap: wrap;
  }
  .cu-mode-label {
    width: 100%;
    padding: 2px 8px;
  }
  .cu-mode-btn {
    flex: 1 1 120px;
  }
  .cu-composer-actions .cu-send {
    padding: 9px 18px;
    font-size: 0.9rem;
  }
  .cu-auth-field {
    min-width: 100%;
  }
}

/* ---- Responsive: mobile-small ≤ 520px ---- */
@media (max-width: 520px) {
  #user-surface .cu-shell {
    padding: 14px 12px 22px;
    min-height: 70vh;
  }
  .cu-cabinet-grid {
    grid-template-columns: 1fr;
  }
  .cu-mock-banner {
    flex-wrap: wrap;
    gap: 6px;
    font-size: 0.7rem;
    padding: 8px 12px;
  }
  .cu-header h2.cu-title {
    font-size: 1.1rem;
  }
  .cu-turn .cu-turn-meta {
    font-size: 0.7rem;
  }
  .cu-citation {
    padding: 8px 10px;
  }
  .cu-citation .cu-cite-title {
    font-size: 0.85rem;
  }
  .cu-citation .cu-cite-snippet {
    font-size: 0.78rem;
  }
  .cu-composer-row textarea.cu-question {
    min-height: 56px;
    font-size: 0.92rem;
  }
  .cu-composer-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cu-composer-actions .cu-send {
    width: 100%;
    padding: 10px 0;
  }
  .cu-toast {
    bottom: 16px;
    padding: 8px 14px;
    font-size: 0.78rem;
  }
}

/* ---- a11y: respect prefers-reduced-motion ---- */
@media (prefers-reduced-motion: reduce) {
  .cu-turn-loading .cu-dot { animation: none; opacity: 0.5; }
  #user-surface .cu-pending-orbit { animation: none; }
  #user-surface .cu-pending-card::after { animation: none; opacity: 0.35; transform: none; }
  .cu-toast { transition: none; }
}

/* ============================================================
 * Phase 98 Stage 6 — Customer Dialogue V1 additions
 * - Login-gate pane (replaces dialogue when unauthenticated)
 * - Sidebar with conversation list
 * - Loading pane (brief bootstrap state)
 * - Message kind badges + citation drawer
 * - 390px small-mobile breakpoint
 * - Sidebar collapses on small viewports
 * ============================================================ */

/* Shell becomes flex container when authenticated: sidebar + main */
.cu-shell:has(.cu-sidebar) {
  display: flex;
  gap: 16px;
  align-items: stretch;
}
.cu-main {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-width: 0; /* allow flex children to shrink */
}

/* Sidebar */
.cu-sidebar {
  flex: 0 0 240px;
  border-right: 1px solid var(--line, rgba(0,0,0,0.08));
  padding: 12px;
  background: var(--bg, #fff);
  overflow-y: auto;
  max-height: 70vh;
}
.cu-sidebar-head {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}
.cu-btn-new-conv {
  width: 100%;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--accent, #2b6cb0);
  color: #fff;
  border: 0;
  cursor: pointer;
  font-weight: 600;
}
.cu-btn-new-conv:hover { filter: brightness(1.05); }
.cu-conv-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 0 0 10px;
  padding: 4px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 999px;
  background: rgba(0,0,0,0.03);
}
.cu-conv-tab {
  min-height: 36px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted, #555);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
}
.cu-conv-tab.cu-active {
  background: var(--bg, #fff);
  color: var(--ink, #222);
  box-shadow: 0 1px 5px rgba(0,0,0,0.08);
}
.cu-folder-panel {
  display: grid;
  gap: 8px;
  margin: 0 0 10px;
}
.cu-folder-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted, #555);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.cu-folder-add {
  min-height: 28px;
  padding: 4px 8px;
  border: 1px solid rgba(43,108,176,0.22);
  border-radius: 999px;
  background: rgba(43,108,176,0.08);
  color: var(--accent, #2b6cb0);
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 800;
}
.cu-folder-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.cu-folder-chip {
  min-height: 32px;
  max-width: 100%;
  padding: 5px 8px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 999px;
  background: rgba(0,0,0,0.03);
  color: var(--ink, #222);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
}
.cu-folder-chip.cu-active {
  border-color: rgba(43,108,176,0.28);
  background: rgba(43,108,176,0.12);
  color: var(--accent, #2b6cb0);
}
.cu-folder-count {
  min-width: 18px;
  padding: 1px 5px;
  border-radius: 999px;
  background: rgba(0,0,0,0.07);
  color: inherit;
  font-size: 0.68rem;
  text-align: center;
}
.cu-folder-trash-note {
  padding: 8px 10px;
  border: 1px dashed rgba(0,0,0,0.12);
  border-radius: 12px;
  color: var(--muted, #555);
  font-size: 0.76rem;
  line-height: 1.4;
}
.cu-conv-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.cu-conv-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 4px 8px;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: default;
  font-size: 0.9rem;
  color: var(--ink, #222);
  margin-bottom: 4px;
  overflow: hidden;
  white-space: normal;
  text-overflow: ellipsis;
}
.cu-conv-item:hover { background: rgba(0,0,0,0.05); }
.cu-conv-select:focus-visible {
  outline: 2px solid var(--accent, #2b6cb0);
  outline-offset: 2px;
  background: rgba(43,108,176,0.08);
}
.cu-conv-item.cu-active { background: rgba(43,108,176,0.12); font-weight: 600; }
.cu-conv-select {
  min-width: 0;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  display: block;
  font: inherit;
  text-align: left;
}
.cu-conv-select-static {
  cursor: default;
}
.cu-conv-item-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
}
.cu-conv-item-foot {
  display: block;
  margin-top: 4px;
}
.cu-conv-actions {
  grid-column: 2;
  grid-row: 1;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.cu-conv-folder-line {
  display: block;
  margin-top: 4px;
}
.cu-conv-folder-badge {
  display: inline-flex;
  max-width: 100%;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(43,108,176,0.08);
  color: var(--accent, #2b6cb0);
  font-size: 0.68rem;
  font-weight: 750;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.cu-conv-action,
.cu-conv-rename {
  flex: 0 0 auto;
  width: 44px;
  min-width: 44px;
  max-width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  border: 1px solid rgba(43,108,176,0.22);
  border-radius: 999px;
  background: rgba(43,108,176,0.08);
  color: var(--accent, #2b6cb0);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0;
  font-weight: 700;
  line-height: 1.2;
  touch-action: manipulation;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.cu-conv-action .cu-icon,
.cu-conv-rename .cu-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}
.cu-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.cu-conv-action:hover,
.cu-conv-rename:hover {
  background: rgba(43,108,176,0.14);
}
.cu-conv-action:disabled,
.cu-conv-action[aria-busy="true"],
.cu-conv-rename:disabled,
.cu-conv-rename[aria-busy="true"],
.cu-move-option:disabled,
.cu-move-option[aria-busy="true"] {
  cursor: wait;
  opacity: 0.58;
}
.cu-conv-action:disabled:hover,
.cu-conv-action[aria-busy="true"]:hover,
.cu-conv-rename:disabled:hover,
.cu-conv-rename[aria-busy="true"]:hover,
.cu-move-option:disabled:hover,
.cu-move-option[aria-busy="true"]:hover {
  background: rgba(43,108,176,0.08);
}
.cu-conv-action:focus-visible,
.cu-conv-rename:focus-visible {
  outline: 2px solid var(--accent, #2b6cb0);
  outline-offset: 2px;
}
.cu-move-menu {
  grid-column: 1 / -1;
  display: grid;
  gap: 6px;
  margin-top: 8px;
  padding: 8px;
  border: 1px solid rgba(43,108,176,0.18);
  border-radius: 14px;
  background: rgba(255,255,255,0.96);
  box-shadow: 0 12px 28px rgba(0,0,0,0.10);
  white-space: normal;
  cursor: default;
}
.cu-move-menu-title {
  padding: 2px 4px 4px;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--muted, #555);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.cu-move-option {
  min-height: 40px;
  border: 1px solid rgba(43,108,176,0.16);
  border-radius: 12px;
  background: rgba(43,108,176,0.06);
  color: var(--ink, #222);
  cursor: pointer;
  text-align: left;
  padding: 8px 10px;
  font: inherit;
  font-size: 0.82rem;
}
.cu-move-option:hover,
.cu-move-option:focus-visible {
  background: rgba(43,108,176,0.12);
  outline: 2px solid var(--accent, #2b6cb0);
  outline-offset: 1px;
}
.cu-move-option[aria-current="true"] {
  border-color: rgba(43,108,176,0.36);
  background: rgba(43,108,176,0.16);
  font-weight: 800;
}
.cu-move-option-new {
  border-style: dashed;
}
.cu-move-option-cancel {
  color: var(--muted, #555);
  background: transparent;
}
.cu-conv-delete {
  border-color: rgba(176, 64, 64, 0.24);
  background: rgba(176, 64, 64, 0.08);
  color: #a33b3b;
}
.cu-conv-restore {
  border-color: rgba(44, 122, 87, 0.24);
  background: rgba(44, 122, 87, 0.08);
  color: #24724f;
}
.cu-conv-empty {
  color: var(--muted, #666);
  font-size: 0.85rem;
  padding: 8px 10px;
}

/* Login gate */
.cu-login-gate {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  padding: 24px;
}
.cu-login-gate-card {
  max-width: 480px;
  text-align: center;
  background: var(--bg, #fff);
  padding: 32px 24px;
  border-radius: 12px;
  box-shadow: var(--shadow, 0 4px 16px rgba(0,0,0,0.08));
}
.cu-login-gate-title { margin: 0 0 8px 0; font-size: 1.4rem; }
.cu-login-gate-body { margin: 0 0 24px 0; color: var(--muted, #555); }
.cu-login-gate-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.cu-btn-primary, .cu-btn-secondary {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
}
.cu-btn-primary { background: var(--accent, #2b6cb0); color: #fff; }
.cu-btn-secondary { background: rgba(0,0,0,0.06); color: var(--ink, #222); }
.cu-session-check-retry { min-height: 44px; }

/* Loading pane (boot state) */
.cu-loading-pane {
  padding: 48px 24px;
  text-align: center;
  color: var(--muted, #666);
  font-size: 0.95rem;
}

/* Message kind badges */
.cu-msg-kind {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-left: 8px;
  text-transform: lowercase;
}
.cu-kind-grounded { background: rgba(33, 150, 83, 0.15); color: #14532d; }
.cu-kind-completed { background: rgba(43, 108, 176, 0.15); color: #1e3a5f; }
.cu-kind-clarifying { background: rgba(202, 138, 4, 0.15); color: #713f12; }
.cu-kind-insufficient { background: rgba(217, 119, 6, 0.15); color: #78350f; }
.cu-kind-failed { background: rgba(220, 38, 38, 0.15); color: #7f1d1d; }
.cu-kind-rag_grounded { background: rgba(14, 139, 115, 0.16); color: #0a5a4c; }
.cu-kind-llm_general { background: rgba(59, 130, 246, 0.15); color: #1d4ed8; }
.cu-kind-error { background: rgba(220, 38, 38, 0.15); color: #7f1d1d; }
.cu-kind-idle { background: rgba(122, 100, 72, 0.16); color: #5f4c32; }

/* Citation drawer (inline aside) */
.cu-citations {
  margin-top: 10px;
  padding: 10px 12px;
  border-left: 3px solid var(--accent, #2b6cb0);
  background: rgba(43, 108, 176, 0.04);
  border-radius: 0 6px 6px 0;
}
.cu-citations ul { list-style: none; margin: 0; padding: 0; }
.cu-citation { margin-bottom: 8px; font-size: 0.85rem; }
.cu-citation:last-child { margin-bottom: 0; }
.cu-citation-src { font-weight: 600; color: var(--ink, #222); }
.cu-citation-conf { font-weight: 400; color: var(--muted, #666); }
.cu-citation-snip { color: var(--muted, #555); margin-top: 2px; }
.cu-citation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 3px;
  color: var(--muted, #666);
  font-size: 0.76rem;
}
.cu-citation-link {
  display: inline-flex;
  margin-top: 6px;
  color: var(--accent-strong);
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
}
.cu-citation-link:hover {
  text-decoration: underline;
}
.cu-citations-empty {
  background: rgba(89, 99, 94, 0.06);
  border-left-color: rgba(89, 99, 94, 0.35);
}
.cu-citations-empty.cu-citations-empty-clarifying {
  background: rgba(253, 231, 194, 0.38);
  border-left-color: rgba(139, 79, 18, 0.48);
}
.cu-citations-empty.cu-citations-empty-insufficient {
  background: rgba(255, 225, 210, 0.44);
  border-left-color: rgba(138, 44, 18, 0.46);
}
.cu-citations-empty.cu-citations-empty-error {
  background: rgba(246, 204, 204, 0.46);
  border-left-color: rgba(107, 31, 31, 0.48);
}
.cu-citations-empty.cu-citations-empty-idle {
  background: rgba(245, 238, 225, 0.5);
  border-left-color: rgba(31, 90, 83, 0.5);
}
.cu-citations-empty-title {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted, #666);
}
.cu-citations-empty-body {
  margin-top: 4px;
  color: var(--muted, #555);
  font-size: 0.84rem;
  line-height: 1.45;
}

/* Logout button styled like a secondary tool button */
.cu-tool-logout {
  margin-left: auto;
  background: rgba(220, 38, 38, 0.08);
  color: #b91c1c;
}
.cu-tool-logout:hover { background: rgba(220, 38, 38, 0.15); }
.cu-tool-account,
.cu-tool-usage-link {
  text-decoration: none;
}

/* Empty-state */
.cu-empty-state {
  padding: 32px 24px;
  text-align: center;
}
.cu-empty-state h3 { margin: 0 0 8px 0; font-size: 1.2rem; }
.cu-empty-state p { color: var(--muted, #666); margin: 0 0 16px 0; }
.cu-empty-prompts {
  list-style: none;
  padding: 0;
  margin: 16px auto;
  max-width: 360px;
}
.cu-empty-prompts li {
  padding: 8px 14px;
  background: rgba(0,0,0,0.04);
  border-radius: 6px;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--ink, #333);
}

/* Existing 680/520 breakpoints + NEW 390 breakpoint */
@media (max-width: 680px) {
  .cu-shell:has(.cu-sidebar) { flex-direction: column; }
  .cu-sidebar {
    flex: 0 0 auto;
    width: 100%;
    max-height: min(240px, 34vh);
    border-right: 0;
    border-bottom: 1px solid var(--line, rgba(0,0,0,0.08));
  }
  .cu-conv-list { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 4px; }
  .cu-conv-item { flex: 0 0 auto; max-width: 220px; }
  .cu-doc-contract-item {
    grid-template-columns: 1fr;
  }
  .cu-doc-backend-pill {
    min-width: 0;
    justify-self: start;
  }
}

@media (max-width: 520px) {
  .cu-login-gate-card { padding: 24px 16px; }
  .cu-login-gate-actions { flex-direction: column; }
  .cu-btn-primary, .cu-btn-secondary { width: 100%; }
  .cu-tool-logout { margin-left: 0; }
}

@media (max-width: 390px) {
  /* Stage 6 spec: mobile proof at 390/520/680 */
  .cu-sidebar { padding: 8px; max-height: min(210px, 42vh); }
  .cu-btn-new-conv { font-size: 0.85rem; padding: 6px 8px; }
  .cu-conv-item { font-size: 0.82rem; padding: 6px 8px; max-width: 168px; }
  .cu-login-gate-card { padding: 20px 12px; }
  .cu-login-gate-title { font-size: 1.15rem; }
  .cu-login-gate-body { font-size: 0.85rem; }
  .cu-empty-state { padding: 20px 12px; }
  .cu-empty-state h3 { font-size: 1.05rem; }
  .cu-empty-prompts li { font-size: 0.82rem; padding: 6px 10px; }
  .cu-msg-kind { font-size: 0.65rem; padding: 1px 6px; }
  .cu-citations { padding: 8px 10px; }
  .cu-citation { font-size: 0.78rem; }
  .cu-tool-btn { font-size: 0.8rem; padding: 6px 10px; }
  .cu-doc-panel { padding: 10px; }
  .cu-doc-state-value,
  .cu-doc-contract-body { font-size: 0.76rem; }
}

/* ============================================================
 * Phase 98 Stage 7 — Customer usage meter
 * ============================================================ */
.cu-usage-meter {
  margin-bottom: 12px;
  padding: 10px 12px;
  background: rgba(0,0,0,0.03);
  border-radius: 8px;
  font-size: 0.78rem;
  color: var(--muted, #555);
}
.cu-meter-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.cu-usage-disclosure {
  display: block;
}
.cu-meter-summary {
  min-height: 34px;
  margin-bottom: 0;
  cursor: pointer;
  list-style: none;
}
.cu-meter-summary::-webkit-details-marker {
  display: none;
}
.cu-meter-summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: 8px;
  color: currentColor;
  font-weight: 800;
  opacity: 0.72;
}
.cu-usage-disclosure[open] .cu-meter-summary {
  margin-bottom: 8px;
}
.cu-usage-disclosure[open] .cu-meter-summary::after {
  content: "-";
}
.cu-meter-details {
  display: grid;
  gap: 6px;
}
.cu-usage-disclosure:not([open]) .cu-meter-details {
  display: none;
}
.cu-meter-label { font-weight: 600; color: var(--ink, #222); }
.cu-meter-counts { font-variant-numeric: tabular-nums; }
.cu-meter-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 999px;
  font-weight: 700;
}
.cu-meter-unlimited { background: rgba(33, 150, 83, 0.15); color: #14532d; }
.cu-meter-bar {
  height: 4px;
  background: rgba(0,0,0,0.08);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 4px;
}
.cu-meter-bar-fill { height: 100%; background: var(--accent, #2b6cb0); transition: width 200ms ease; }
.cu-meter-bar-warn .cu-meter-bar-fill { background: #d97706; }
.cu-meter-bar-full .cu-meter-bar-fill { background: #dc2626; }

/* ============================================================
 * U2R — professional cabinet redesign + Ukrainian-first polish
 * Bounded visual pass only: no routing or data-flow changes.
 * ============================================================ */
#user-surface {
  --bg: #e5dfd5;
  --bg-alt: #f0ebe2;
  --panel: #f7f3eb;
  --ink: #141715;
  --muted: #595d57;
  --line: rgba(20, 23, 21, 0.12);
  --line-strong: rgba(20, 23, 21, 0.24);
  --accent: #1d5952;
  --accent-strong: #143b37;
  --warning: #964f35;
  --shadow: 0 28px 64px rgba(6, 8, 8, 0.22);
  font-family: var(--cu-v2-font-body);
}

#user-surface .cu-shell,
#user-surface .cu-shell.cu-mock {
  background:
    radial-gradient(circle at top right, rgba(122, 100, 72, 0.08), transparent 24%),
    linear-gradient(180deg, #1c2120 0%, #121615 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 22px;
  box-shadow: 0 28px 68px rgba(0, 0, 0, 0.34);
  padding: 18px;
  gap: 18px;
}

#user-surface .cu-shell:has(.cu-sidebar) {
  display: grid;
  grid-template-columns: minmax(244px, 284px) minmax(0, 1fr);
  align-items: start;
}

#user-surface .cu-sidebar {
  background: linear-gradient(180deg, #212726 0%, #171b1a 100%);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 16px;
  padding: 14px;
  color: #d7d0c2;
  max-height: calc(100vh - 40px);
  overflow: auto;
  position: sticky;
  top: 18px;
  align-self: start;
}

#user-surface .cu-sidebar-head {
  margin-bottom: 14px;
}

#user-surface .cu-btn-new-conv {
  border-radius: 10px;
  min-height: 44px;
  background: linear-gradient(180deg, #2f7068 0%, #1d554e 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

#user-surface .cu-conv-item {
  padding: 10px 12px;
  border-radius: 10px;
  color: #e7e1d7;
}

#user-surface .cu-conv-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

#user-surface .cu-conv-item.cu-active {
  background: rgba(245, 239, 229, 0.1);
  color: #f7f2e8;
}

#user-surface .cu-conv-empty,
#user-surface .cu-usage-meter,
#user-surface .cu-meter-label,
#user-surface .cu-meter-counts,
#user-surface .cu-meter-foot,
#user-surface .cu-meter-note {
  color: #c6c0b4;
}

#user-surface .cu-usage-meter {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 12px;
}

#user-surface .cu-meter-bar {
  background: rgba(255, 255, 255, 0.12);
  border-color: transparent;
}

#user-surface .cu-main {
  min-width: 0;
  background: linear-gradient(180deg, #232826 0%, #1a1f1e 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 20px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  color: #e8ebe4;
}

#user-surface .cu-mock-banner {
  background: linear-gradient(90deg, #8e4a34 0%, #a55b40 100%);
  border-radius: 14px;
}

#user-surface .cu-header {
  display: grid;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-header h2.cu-title {
  margin: 0;
  font-family: var(--cu-v2-font-display);
  font-size: clamp(2rem, 3.1vw, 2.85rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: #f4efe4;
}

#user-surface .cu-header p.cu-subtitle {
  max-width: 64ch;
  font-size: 0.98rem;
  color: #b7beb5;
}

#user-surface .cu-cabinet-note {
  gap: 16px;
  padding: 18px;
  background: linear-gradient(180deg, rgba(47, 52, 50, 0.96) 0%, rgba(31, 35, 34, 0.96) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-top: 3px solid #7a6345;
  border-radius: 16px;
  color: #e7eadf;
}

#user-surface .cu-cabinet-note-head {
  display: grid;
  gap: 8px;
}

#user-surface .cu-cabinet-note-title {
  margin: 0 0 8px;
  font-family: var(--cu-v2-font-display);
  font-size: 1.28rem;
  letter-spacing: -0.02em;
  color: #f3ede2;
}

#user-surface .cu-cabinet-note-body {
  max-width: 68ch;
  font-size: 0.88rem;
  line-height: 1.55;
  color: #d1d6ce;
}

#user-surface .cu-cabinet-chip-row {
  gap: 10px;
}

#user-surface .cu-cabinet-chip {
  padding: 6px 11px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #e5ddd0;
  font-size: 0.74rem;
  letter-spacing: 0.015em;
  text-transform: none;
}

#user-surface .cu-cabinet-chip-warn {
  background: rgba(156, 81, 53, 0.14);
  color: #f0cbb6;
  border-color: rgba(156, 81, 53, 0.22);
}

#user-surface .cu-cabinet-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

#user-surface .cu-cabinet-card,
#user-surface .cu-doc-panel {
  background: rgba(239, 234, 226, 0.94);
  border: 1px solid rgba(18, 20, 18, 0.16);
  border-radius: 14px;
  box-shadow: none;
  color: #1b1f1d;
}

#user-surface .cu-cabinet-card {
  padding: 16px;
}

#user-surface .cu-cabinet-card-handoff {
  grid-column: 1 / -1;
}

#user-surface .cu-cabinet-card-title,
#user-surface .cu-doc-panel-title {
  margin: 0 0 8px;
  font-size: 0.96rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}

#user-surface .cu-cabinet-card-body,
#user-surface .cu-doc-panel-body,
#user-surface .cu-doc-state-value,
#user-surface .cu-doc-contract-body {
  font-size: 0.83rem;
  line-height: 1.58;
  color: #4a514c;
}

#user-surface .cu-card-checklist {
  color: #1a1f1d;
}

#user-surface .cu-card-checklist li::marker {
  color: #8a6744;
}

#user-surface .cu-card-links {
  gap: 8px;
}

#user-surface .cu-card-links a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 11px;
  border-radius: 999px;
  background: rgba(24, 32, 29, 0.04);
  border: 1px solid rgba(24, 32, 29, 0.08);
  text-decoration: none;
}

#user-surface .cu-card-links a:hover {
  background: rgba(31, 90, 83, 0.12);
  text-decoration: none;
}

#user-surface .cu-card-state {
  background: rgba(89, 99, 94, 0.1);
  color: #3f4642;
}

#user-surface .cu-doc-detail-grid {
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 12px 14px;
}

#user-surface .cu-doc-detail-grid > .cu-doc-panel:last-child {
  grid-column: 1 / -1;
}

#user-surface .cu-doc-panel {
  padding: 15px;
  background: rgba(249, 245, 238, 0.98);
}

#user-surface .cu-doc-state-label {
  color: #4d514b;
  text-transform: none;
}

#user-surface .cu-doc-state-list li,
#user-surface .cu-doc-contract-item {
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(20, 23, 21, 0.08);
}

#user-surface .cu-doc-state-list li:last-child,
#user-surface .cu-doc-contract-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

#user-surface .cu-doc-backend-pill {
  min-width: 96px;
  font-size: 0.7rem;
}

#user-surface .cu-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 10px 12px;
  padding-top: 2px;
  border-top: none;
}

#user-surface .cu-toolbar-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

#user-surface .cu-toolbar-group-session {
  margin-left: auto;
  justify-content: flex-end;
}

#user-surface .cu-toolbar .cu-tool-btn {
  min-height: 38px;
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #ece6db;
}

#user-surface .cu-toolbar .cu-tool-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

#user-surface .cu-toolbar .cu-tool-btn:focus-visible,
#user-surface .cu-toolbar .cu-lang-toggle button:focus-visible {
  outline: 3px solid #3ab99d;
  outline-offset: 3px;
}

#user-surface .cu-toolbar .cu-lang-toggle {
  padding: 4px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  gap: 6px;
}

#user-surface .cu-toolbar .cu-lang-toggle span {
  padding-left: 10px;
}

#user-surface .cu-toolbar .cu-lang-toggle button {
  min-height: 34px;
  border-radius: 999px;
}

#user-surface .cu-toolbar .cu-lang-toggle-locked {
  padding-right: 10px;
}

#user-surface .cu-toolbar .cu-lang-static {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
  color: #f0e8da;
  font-weight: 700;
  letter-spacing: 0.04em;
}

#user-surface .cu-thread-region {
  background: rgba(246, 241, 232, 0.98);
  border: 1px solid rgba(18, 20, 18, 0.12);
  border-radius: 16px;
  padding: 18px;
  max-height: 56vh;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.52);
}

#user-surface .cu-msg {
  gap: 10px;
}

#user-surface .cu-msg-head {
  gap: 8px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: #68706b;
}

#user-surface .cu-msg-role {
  background: rgba(31, 90, 83, 0.12);
}

#user-surface .cu-msg-user .cu-msg-body {
  background: linear-gradient(180deg, #1f5a53 0%, #173f3a 100%);
  border-radius: 20px 20px 8px 20px;
  box-shadow: 0 10px 22px rgba(31, 90, 83, 0.18);
}

#user-surface .cu-msg-system .cu-msg-body {
  background: rgba(250, 246, 238, 0.98);
  border: 1px solid rgba(18, 20, 18, 0.1);
  border-radius: 18px 18px 18px 8px;
  line-height: 1.65;
}

#user-surface .cu-msg-pending .cu-msg-body {
  background:
    radial-gradient(circle at 16% 18%, rgba(122, 100, 72, 0.16), transparent 32%),
    linear-gradient(180deg, rgba(250, 246, 238, 0.99) 0%, rgba(244, 238, 226, 0.98) 100%);
  border-color: rgba(122, 100, 72, 0.24);
  box-shadow: 0 14px 34px rgba(62, 54, 43, 0.12);
}

#user-surface .cu-msg-system .cu-msg-body-rendered {
  white-space: normal;
}

#user-surface .cu-simple-mode-note {
  display: grid;
  gap: 3px;
  margin: -2px 0 2px 6px;
  padding: 9px 11px;
  border: 1px solid rgba(31, 90, 83, 0.22);
  border-radius: 12px;
  background: rgba(31, 90, 83, 0.08);
  color: #25413d;
  font-size: 0.78rem;
  line-height: 1.35;
}

#user-surface .cu-simple-mode-note strong {
  color: #173f3a;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#user-surface .cu-simple-mode-note-advanced {
  border-color: rgba(138, 90, 18, 0.24);
  background: rgba(253, 241, 217, 0.72);
  color: #4b3718;
}

#user-surface .cu-simple-mode-note-advanced strong {
  color: #3a2a12;
}

#user-surface .cu-msg-feedback {
  display: flex;
  gap: 6px;
  align-items: center;
  margin: -2px 0 2px 6px;
}

#user-surface .cu-msg-feedback-btn {
  border: 1px solid rgba(18, 20, 18, 0.12);
  border-radius: 999px;
  background: rgba(250, 246, 238, 0.72);
  color: #555952;
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  line-height: 1;
  padding: 6px 10px;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease, transform 140ms ease;
}

#user-surface .cu-msg-feedback-btn:hover,
#user-surface .cu-msg-feedback-btn:focus-visible {
  background: rgba(238, 232, 223, 0.95);
  border-color: rgba(31, 90, 83, 0.32);
  color: #173f3a;
}

#user-surface .cu-msg-feedback-btn:active {
  transform: translateY(1px);
}

#user-surface .cu-msg-feedback-btn.cu-msg-feedback-active {
  background: rgba(31, 90, 83, 0.12);
  border-color: rgba(31, 90, 83, 0.42);
  color: #173f3a;
}

#user-surface .cu-msg-body-rendered p {
  margin: 0 0 0.85rem;
}

#user-surface .cu-msg-body-rendered p:last-child {
  margin-bottom: 0;
}

#user-surface .cu-msg-body-rendered h2,
#user-surface .cu-msg-body-rendered h3,
#user-surface .cu-msg-body-rendered h4 {
  margin: 1rem 0 0.45rem;
  font-family: var(--cu-v2-font-display);
  line-height: 1.18;
  color: #1e241f;
}

#user-surface .cu-msg-body-rendered h2:first-child,
#user-surface .cu-msg-body-rendered h3:first-child,
#user-surface .cu-msg-body-rendered h4:first-child {
  margin-top: 0;
}

#user-surface .cu-msg-body-rendered ol,
#user-surface .cu-msg-body-rendered ul {
  margin: 0.55rem 0 0.9rem 1.2rem;
  padding: 0;
}

#user-surface .cu-msg-body-rendered li {
  margin: 0.25rem 0;
}

#user-surface .cu-md-table-wrap {
  overflow-x: auto;
  margin: 0.75rem 0 1rem;
  border: 1px solid rgba(18, 20, 18, 0.12);
  border-radius: 12px;
}

#user-surface .cu-md-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.36);
}

#user-surface .cu-md-table th,
#user-surface .cu-md-table td {
  padding: 0.62rem 0.7rem;
  border-bottom: 1px solid rgba(18, 20, 18, 0.1);
  text-align: left;
  vertical-align: top;
}

#user-surface .cu-md-table th {
  background: rgba(31, 90, 83, 0.1);
  color: #1a3f39;
  font-weight: 700;
}

#user-surface .cu-md-table tr:last-child td {
  border-bottom: 0;
}

#user-surface .cu-msg-loading .cu-msg-body {
  background: rgba(247, 242, 233, 0.98);
  border-color: rgba(18, 20, 18, 0.1);
}

#user-surface .cu-pending-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
  position: relative;
  padding-bottom: 8px;
}

#user-surface .cu-pending-card::after {
  content: "";
  position: absolute;
  left: 62px;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(31, 90, 83, 0.72), rgba(31, 90, 83, 0.18), transparent);
  opacity: 0.78;
  transform-origin: left center;
  animation: cu-pending-breathe 2.6s ease-in-out infinite;
}

#user-surface .cu-pending-orbit {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background:
    conic-gradient(from 20deg, rgba(31, 90, 83, 0.08), rgba(31, 90, 83, 0.78), rgba(122, 100, 72, 0.18), rgba(31, 90, 83, 0.08));
  box-shadow: inset 0 0 0 1px rgba(31, 90, 83, 0.16), 0 8px 18px rgba(31, 90, 83, 0.16);
  animation: cu-pending-spin 2.8s linear infinite;
}

#user-surface .cu-pending-orbit span {
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: rgba(250, 246, 238, 0.98);
  box-shadow: inset 0 0 0 1px rgba(122, 100, 72, 0.18);
}

#user-surface .cu-pending-card-stale .cu-pending-orbit {
  background:
    radial-gradient(circle at 50% 50%, rgba(250, 246, 238, 0.96) 0 42%, transparent 43%),
    conic-gradient(from 20deg, rgba(138, 90, 18, 0.18), rgba(138, 90, 18, 0.82), rgba(122, 100, 72, 0.16), rgba(138, 90, 18, 0.18));
  box-shadow: inset 0 0 0 1px rgba(138, 90, 18, 0.24), 0 8px 18px rgba(138, 90, 18, 0.16);
  animation: none;
}

#user-surface .cu-pending-card-stale .cu-pending-step::before {
  background: #8a5a12;
  box-shadow: 0 0 0 4px rgba(138, 90, 18, 0.12);
}

#user-surface .cu-pending-card-stale::after {
  background: linear-gradient(90deg, rgba(138, 90, 18, 0.55), rgba(138, 90, 18, 0.16), transparent);
  animation: none;
}

#user-surface .cu-pending-card-stale .cu-pending-recovery-meta span {
  border-color: rgba(138, 90, 18, 0.18);
  background: rgba(253, 241, 217, 0.54);
  color: #7b4e0f;
}

#user-surface .cu-pending-copy p {
  margin: 0 0 12px;
  color: #28342f;
}

#user-surface .cu-job-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin: -2px 0 12px;
}

#user-surface .cu-job-pill,
#user-surface .cu-job-attempt {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid rgba(31, 90, 83, 0.16);
  background: rgba(31, 90, 83, 0.08);
  color: #1f5a53;
  font-size: 0.71rem;
  font-weight: 800;
  letter-spacing: 0.025em;
}

#user-surface .cu-job-attempt {
  border-color: rgba(122, 100, 72, 0.18);
  background: rgba(255, 255, 255, 0.52);
  color: #665a49;
}

#user-surface .cu-pending-recovery-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: -2px 0 12px;
}

#user-surface .cu-pending-recovery-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid rgba(31, 90, 83, 0.14);
  background: rgba(255, 255, 255, 0.46);
  color: #3e524c;
  font-size: 0.71rem;
  font-weight: 760;
  letter-spacing: 0.018em;
}

#user-surface .cu-job-pill-retry_wait,
#user-surface .cu-job-pill-orphaned,
#user-surface .cu-job-pill-failed {
  border-color: rgba(138, 90, 18, 0.22);
  background: rgba(138, 90, 18, 0.1);
  color: #7b4e0f;
}

#user-surface .cu-pending-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

#user-surface .cu-pending-step {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(122, 100, 72, 0.18);
  color: #4f5a53;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

#user-surface .cu-pending-step-1 {
  border-color: rgba(31, 90, 83, 0.24);
  background: rgba(31, 90, 83, 0.09);
  color: #1f5a53;
}

#user-surface .cu-pending-card-stale .cu-pending-step-1 {
  border-color: rgba(138, 90, 18, 0.24);
  background: rgba(253, 241, 217, 0.58);
  color: #7b4e0f;
}

#user-surface .cu-pending-step::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #1f5a53;
  box-shadow: 0 0 0 4px rgba(31, 90, 83, 0.1);
}

#user-surface .cu-pending-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

#user-surface .cu-pending-refresh {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid rgba(31, 90, 83, 0.22);
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(31, 90, 83, 0.12), rgba(255, 255, 255, 0.66));
  color: #17433d;
  font-size: 0.78rem;
  font-weight: 820;
  letter-spacing: 0.035em;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

#user-surface .cu-pending-refresh:hover {
  border-color: rgba(31, 90, 83, 0.36);
  background: linear-gradient(135deg, rgba(31, 90, 83, 0.17), rgba(255, 255, 255, 0.78));
  box-shadow: 0 10px 22px rgba(31, 90, 83, 0.12);
  transform: translateY(-1px);
}

#user-surface .cu-pending-refresh:focus-visible {
  outline: 3px solid rgba(31, 90, 83, 0.28);
  outline-offset: 3px;
}

#user-surface .cu-pending-refresh:disabled,
#user-surface .cu-pending-refresh[aria-busy="true"] {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

#user-surface .cu-pending-card-stale .cu-pending-refresh {
  border-color: rgba(138, 90, 18, 0.24);
  background: linear-gradient(135deg, rgba(253, 241, 217, 0.84), rgba(255, 255, 255, 0.58));
  color: #7b4e0f;
}

#user-surface .cu-pending-card-stale .cu-pending-refresh:hover {
  border-color: rgba(138, 90, 18, 0.38);
  box-shadow: 0 10px 22px rgba(138, 90, 18, 0.12);
}

@media (max-width: 520px) {
  #user-surface .cu-pending-actions {
    align-items: stretch;
  }

  #user-surface .cu-pending-refresh {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  #user-surface .cu-pending-refresh {
    transition: none;
  }

  #user-surface .cu-pending-refresh:hover {
    transform: none;
  }
}

@keyframes cu-pending-spin {
  to { transform: rotate(360deg); }
}

@keyframes cu-pending-breathe {
  0%, 100% { transform: scaleX(0.36); opacity: 0.44; }
  50% { transform: scaleX(1); opacity: 0.88; }
}

#user-surface .cu-msg-kind {
  padding: 4px 10px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.67rem;
}

#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  margin-top: 12px;
  padding: 12px 14px;
  background: rgba(238, 232, 223, 0.95);
  border: 1px solid rgba(18, 20, 18, 0.1);
  border-left: 2px solid #7a6345;
  border-radius: 14px;
}

#user-surface .cu-citation {
  padding: 12px 0;
  border-bottom: 1px solid rgba(18, 20, 18, 0.08);
  margin-bottom: 0;
}

#user-surface .cu-citation:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

#user-surface .cu-citation-src {
  font-size: 0.92rem;
}

#user-surface .cu-citation-snip {
  margin-top: 6px;
  color: #404541;
}

#user-surface .cu-citation-link {
  margin-top: 8px;
}

#user-surface .cu-citations-empty-title {
  color: #555952;
}

#user-surface .cu-citations-head {
  color: #555952;
}

#user-surface .cu-citations-empty.cu-citations-empty-clarifying {
  background: rgba(253, 241, 217, 0.9);
}

#user-surface .cu-citations-empty.cu-citations-empty-insufficient {
  background: rgba(252, 232, 220, 0.92);
}

#user-surface .cu-citations-empty.cu-citations-empty-error {
  background: rgba(248, 226, 226, 0.94);
}

#user-surface .cu-citations-empty.cu-citations-empty-idle {
  background: rgba(245, 238, 225, 0.94);
  border-left-color: #1f5a53;
}

#user-surface .cu-citations-empty.cu-citations-empty-stale {
  background: rgba(253, 241, 217, 0.92);
  border-left-color: #8a5a12;
}

/* Empty source states are context notes, not another dominant answer card. */
#user-surface .cu-citations-empty {
  margin-top: 8px;
  padding: 8px 10px;
  border: 1px dashed rgba(122, 99, 69, 0.22);
  border-left-width: 1px;
  border-radius: 10px;
  background: rgba(245, 238, 225, 0.18);
  box-shadow: none;
}

#user-surface .cu-citations-empty-title {
  font-size: 0.72rem;
  letter-spacing: 0.055em;
}

#user-surface .cu-citations-empty-body {
  margin-top: 3px;
  font-size: 0.8rem;
  line-height: 1.35;
}

#user-surface .cu-citations-empty.cu-citations-empty-clarifying,
#user-surface .cu-citations-empty.cu-citations-empty-insufficient,
#user-surface .cu-citations-empty.cu-citations-empty-error,
#user-surface .cu-citations-empty.cu-citations-empty-idle,
#user-surface .cu-citations-empty.cu-citations-empty-stale {
  background: rgba(245, 238, 225, 0.18);
}

/* Phase114 customer workspace: one quiet visual hierarchy around the chat. */
#user-surface {
  --cu114-canvas: #f5f1e8;
  --cu114-paper: #fffdf8;
  --cu114-paper-2: #f8f5ee;
  --cu114-ink: #18221e;
  --cu114-muted: #6a726d;
  --cu114-line: #d8d4c9;
  --cu114-forest: #1d554d;
  --cu114-forest-soft: #e2eee9;
  --cu114-brass: #a97543;
  color: var(--cu114-ink);
}

#user-surface .cu-shell:has(.cu-sidebar) {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 286px;
  gap: 12px;
  align-items: stretch;
  max-width: 1440px;
  margin: 0 auto;
}

#user-surface .cu-main,
#user-surface .cu-sidebar {
  border: 1px solid rgba(24, 34, 30, 0.09);
  background: rgba(255, 253, 248, 0.96);
  box-shadow: 0 16px 46px rgba(25, 38, 33, 0.07);
}

#user-surface .cu-main {
  grid-column: 1;
  min-width: 0;
  min-height: calc(100vh - 36px);
  border-radius: 22px;
  padding: clamp(14px, 2vw, 24px);
}

#user-surface .cu-sidebar {
  grid-column: 2;
  width: auto;
  min-width: 0;
  max-height: calc(100vh - 36px);
  border-radius: 22px;
  padding: 14px;
  position: sticky;
  top: 12px;
}

#user-surface .cu-header {
  align-items: center;
  margin-bottom: 12px;
  padding: 2px 2px 8px;
  border: 0;
  background: transparent;
}

#user-surface .cu-title {
  color: var(--cu114-ink);
  font-family: var(--cu-v2-font-display);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

#user-surface .cu-subtitle {
  max-width: 62ch;
  margin-top: 4px;
  color: var(--cu114-muted);
  font-size: 0.92rem;
}

#user-surface .cu-mode-current-pill { display: none; }

#user-surface .cu-cabinet-note {
  margin: 0 0 10px;
  border: 1px solid var(--cu114-line);
  border-radius: 14px;
  background: var(--cu114-paper-2);
  box-shadow: none;
}

#user-surface .cu-cabinet-summary {
  min-height: 50px;
  padding: 10px 12px;
}

#user-surface .cu-cabinet-note-title,
#user-surface .cu-cabinet-card-title { color: var(--cu114-ink); }
#user-surface .cu-cabinet-note-body,
#user-surface .cu-cabinet-card-body { color: var(--cu114-muted); }

#user-surface .cu-cabinet-help-mark {
  width: 30px;
  height: 30px;
  border-color: var(--cu114-line);
  background: var(--cu114-paper);
  color: var(--cu114-forest);
}

#user-surface .cu-cabinet-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

#user-surface .cu-cabinet-card {
  border: 1px solid var(--cu114-line);
  border-radius: 12px;
  padding: 13px;
  background: var(--cu114-paper);
  box-shadow: none;
}

#user-surface .cu-card-links a { color: var(--cu114-forest); }

#user-surface .cu-toolbar {
  margin: 0 0 10px;
  padding: 0 2px;
  border: 0;
  background: transparent;
}

#user-surface .cu-tool-btn,
#user-surface .cu-toolbar-menu-summary {
  min-height: 34px;
  border-color: transparent;
  color: var(--cu114-muted);
  background: transparent;
  box-shadow: none;
}

#user-surface .cu-tool-btn:hover,
#user-surface .cu-toolbar-menu-summary:hover {
  color: var(--cu114-ink);
  background: var(--cu114-paper-2);
}

#user-surface .cu-thread-region {
  min-height: clamp(360px, 54vh, 700px);
  border: 1px solid var(--cu114-line);
  border-radius: 16px;
  padding: clamp(12px, 2vw, 22px);
  background: linear-gradient(180deg, #fffefa, #fbf8f1);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  scroll-behavior: smooth;
}

#user-surface .cu-msg {
  animation: cu114-message-in 220ms ease-out both;
}

#user-surface .cu-msg-system,
#user-surface .cu-msg-assistant {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

#user-surface .cu-msg-user {
  border-color: rgba(29, 85, 77, 0.14);
  background: var(--cu114-forest-soft);
  box-shadow: none;
}

#user-surface .cu-msg-body {
  color: var(--cu114-ink);
  font-size: 0.98rem;
  line-height: 1.68;
}

#user-surface .cu-msg-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

#user-surface .cu-citations {
  border-color: var(--cu114-line);
  background: var(--cu114-paper-2);
}

#user-surface .cu-composer-row {
  position: sticky;
  bottom: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "mode mode"
    "question question"
    "policy policy"
    "actions actions";
  gap: 9px 10px;
  margin-top: 10px;
  border: 1px solid rgba(24, 34, 30, 0.12);
  border-radius: 17px;
  padding: 10px;
  background: rgba(255, 253, 248, 0.96);
  box-shadow: 0 16px 40px rgba(25, 38, 33, 0.11);
  backdrop-filter: blur(10px);
}

#user-surface .cu-question {
  grid-area: question;
  min-height: 58px;
  max-height: 210px;
  border: 0;
  border-radius: 11px;
  padding: 12px;
  color: var(--cu114-ink);
  background: var(--cu114-paper-2);
  box-shadow: none;
}

#user-surface .cu-question:focus {
  outline: 2px solid rgba(29, 85, 77, 0.32);
  outline-offset: 1px;
}

#user-surface .cu-composer-actions {
  grid-area: actions;
  min-width: 120px;
}

#user-surface .cu-send {
  width: 100%;
  min-height: 48px;
  border: 0;
  border-radius: 12px;
  color: #fff;
  background: var(--cu114-forest);
  box-shadow: none;
}

#user-surface .cu-send:hover { background: #153e38; transform: translateY(-1px); }

#user-surface .cu-status-line {
  max-width: 18ch;
  color: var(--cu114-muted);
  font-size: 0.72rem;
  text-align: center;
}

#user-surface .cu-mode-panel {
  grid-area: mode;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 0;
  padding: 0;
  background: transparent;
}

#user-surface .cu-mode-panel-head { flex: 0 0 auto; }
#user-surface .cu-mode-title { color: var(--cu114-muted); }
#user-surface .cu-mode-badge { display: none; }

#user-surface .cu-mode-toggle {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 520px;
  border: 1px solid var(--cu114-line);
  border-radius: 12px;
  padding: 3px;
  background: var(--cu114-paper-2);
}

#user-surface .cu-mode-btn {
  min-height: 42px;
  border: 0;
  border-radius: 9px;
  color: var(--cu114-muted);
  background: transparent;
  box-shadow: none;
}

#user-surface .cu-mode-btn.cu-active,
#user-surface .cu-mode-btn[aria-pressed="true"] {
  color: #fff;
  background: var(--cu114-forest);
}

#user-surface .cu-mode-btn strong { font-size: 0.87rem; }
#user-surface .cu-mode-btn small { font-size: 0.7rem; opacity: 0.82; }

#user-surface .cu-sidebar-head,
#user-surface .cu-conv-tabs,
#user-surface .cu-folder-panel { border-color: var(--cu114-line); }

#user-surface .cu-btn-new-conv {
  border: 0;
  border-radius: 11px;
  color: #fff;
  background: var(--cu114-forest);
  box-shadow: none;
}

#user-surface .cu-conv-item,
#user-surface .cu-folder-item,
#user-surface .cu-conv-tab {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

#user-surface .cu-conv-item:hover,
#user-surface .cu-conv-item.cu-active,
#user-surface .cu-conv-tab.cu-active {
  background: var(--cu114-paper-2);
}

#user-surface .cu-usage-meter {
  border: 1px solid var(--cu114-line);
  border-radius: 12px;
  padding: 10px;
  color: var(--cu114-ink);
  background: var(--cu114-paper-2);
  box-shadow: none;
}

#user-surface .cu-meter-summary { min-height: 34px; }
#user-surface .cu-meter-label { color: var(--cu114-muted); }
#user-surface .cu-meter-counts { color: var(--cu114-ink); font-weight: 800; }
#user-surface .cu-meter-bar { background: #e4e0d6; }
#user-surface .cu-meter-bar-fill { background: var(--cu114-forest); }
#user-surface .cu-meter-foot { color: var(--cu114-muted); }

#user-surface .cu-meter-storage-grid {
  display: grid;
  gap: 7px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--cu114-line);
}

#user-surface .cu-meter-storage-grid span {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--cu114-muted);
  font-size: 0.78rem;
}

#user-surface .cu-meter-storage-grid strong { color: var(--cu114-ink); }

#user-surface .cu-login-gate { min-height: 0; padding: 0; }
#user-surface .cu-login-gate-card {
  width: min(520px, 100%);
  margin: 0 auto;
  border: 1px solid rgba(24, 34, 30, 0.1);
  border-radius: 22px;
  padding: clamp(22px, 5vw, 36px);
  color: var(--cu114-ink);
  background: rgba(255, 253, 248, 0.96);
  box-shadow: 0 18px 52px rgba(25, 38, 33, 0.08);
}

#user-surface .cu-login-gate-title { color: var(--cu114-ink); }
#user-surface .cu-login-gate-body { color: var(--cu114-muted); }
#user-surface .cu-btn-primary { background: var(--cu114-forest); }
#user-surface .cu-btn-secondary { color: var(--cu114-forest); border-color: var(--cu114-line); background: var(--cu114-paper-2); }

@keyframes cu114-message-in {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 920px) {
  #user-surface .cu-shell:has(.cu-sidebar) {
    grid-template-columns: minmax(0, 1fr) 244px;
  }
}

@media (max-width: 760px) {
  #user-surface .cu-shell:has(.cu-sidebar) { display: flex; gap: 8px; }
  #user-surface .cu-main { order: 1; min-height: auto; border-radius: 16px; padding: 10px; }
  #user-surface .cu-sidebar { order: 2; position: static; width: 100%; max-height: none; border-radius: 16px; }
  #user-surface .cu-thread-region { min-height: 54vh; padding: 10px; }
  #user-surface .cu-cabinet-grid { grid-template-columns: 1fr; }
  #user-surface .cu-composer-row {
    grid-template-columns: 1fr;
    grid-template-areas: "mode" "question" "policy" "actions";
    padding: 8px;
  }
  #user-surface .cu-mode-panel { align-items: flex-start; flex-direction: column; }
  #user-surface .cu-mode-toggle { width: 100%; max-width: none; }
  #user-surface .cu-composer-actions { width: 100%; min-width: 0; }
  #user-surface .cu-status-line { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  #user-surface .cu-msg { animation: none; }
  #user-surface .cu-thread-region { scroll-behavior: auto; }
}

#user-surface .cu-composer-row {
  padding: 14px;
  background: linear-gradient(180deg, rgba(36, 41, 39, 0.96) 0%, rgba(25, 29, 28, 0.96) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
}

#user-surface .cu-composer-row textarea.cu-question {
  min-height: 78px;
  padding: 12px 14px;
  background: #fffdfa;
  border-radius: 16px;
  line-height: 1.5;
}

#user-surface .cu-composer-row textarea.cu-question:focus-visible {
  outline: 3px solid rgba(58, 185, 157, 0.48);
  outline-offset: 3px;
}

#user-surface .cu-composer-actions {
  justify-content: space-between;
}

#user-surface .cu-mode-toggle {
  background: rgba(17, 22, 20, 0.74);
  border-color: rgba(255, 255, 255, 0.12);
}

#user-surface .cu-mode-label {
  color: #c7cec6;
}

#user-surface .cu-mode-btn {
  color: #b7beb5;
}

#user-surface .cu-mode-btn strong {
  color: #ece7dc;
}

#user-surface .cu-mode-btn.cu-active {
  background: #d8d0c1;
  color: #202622;
}

#user-surface .cu-mode-btn.cu-active strong {
  color: #111614;
}

#user-surface .cu-composer-actions .cu-send {
  min-height: 44px;
  padding: 0 24px;
  background: linear-gradient(180deg, #1f5a53 0%, #153d39 100%);
  box-shadow: 0 10px 22px rgba(31, 90, 83, 0.18);
}

#user-surface .cu-composer-actions .cu-send:focus-visible {
  outline: 3px solid rgba(216, 208, 193, 0.54);
  outline-offset: 3px;
}

#user-surface .cu-status-line {
  font-size: 0.82rem;
  color: #b7beb5;
}

#user-surface .cu-login-gate-card {
  background: linear-gradient(180deg, rgba(35, 41, 39, 0.98) 0%, rgba(24, 28, 27, 0.98) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-top: 3px solid #7a6448;
  border-radius: 18px;
  padding: 34px 28px;
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.22);
  color: #e7eadf;
}

#user-surface .cu-shell.cu-shell-login-gate {
  min-height: auto;
  padding: 18px;
  gap: 12px;
}

#user-surface .cu-shell.cu-shell-login-gate .cu-login-gate {
  min-height: auto;
  padding: 4px 0 0;
}

#user-surface .cu-shell.cu-shell-login-gate .cu-login-gate-card {
  max-width: 460px;
  padding: 28px 24px;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.2);
}

#user-surface .cu-login-gate-title {
  font-family: var(--cu-v2-font-display);
  font-size: 2rem;
  letter-spacing: -0.02em;
  color: #f4eee2;
}

#user-surface .cu-login-gate-body {
  color: #c7cdc5;
  line-height: 1.6;
}

#user-surface .cu-btn-primary,
#user-surface .cu-btn-secondary {
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
}

#user-surface .cu-btn-primary {
  background: linear-gradient(180deg, #1f5a53 0%, #153d39 100%);
}

#user-surface .cu-btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: #ebe5da;
}

#user-surface .cu-empty-state {
  padding: 28px 22px;
  background: rgba(247, 243, 235, 0.74);
  border: 1px solid rgba(18, 20, 18, 0.08);
  border-style: solid;
}

#user-surface .cu-empty-state h3,
#user-surface .cu-empty-title {
  color: var(--ink);
  font-family: var(--cu-v2-font-display);
}

#user-surface .cu-empty-prompts li,
#user-surface .cu-empty-state .cu-empty-suggestions button {
  background: rgba(31, 90, 83, 0.08);
  border: 1px solid rgba(31, 90, 83, 0.1);
  color: var(--ink);
}

@media (max-width: 900px) {
  #user-surface .cu-shell,
  #user-surface .cu-shell.cu-mock {
    padding: 18px;
    border-radius: 22px;
  }

  #user-surface .cu-shell:has(.cu-sidebar) {
    display: flex;
    flex-direction: column;
  }

  #user-surface .cu-sidebar {
    order: 2;
    position: static;
    max-height: none;
    overflow: visible;
  }

  #user-surface .cu-main {
    order: 1;
    padding: 18px;
  }

  #user-surface .cu-cabinet-grid,
  #user-surface .cu-doc-detail-grid {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-header h2.cu-title {
    font-size: clamp(1.7rem, 7vw, 2.3rem);
  }
}

/* Customer answer polish: compact truth surfaces and restrained motion.
   The dialogue rerenders during polling, so message-entry animation is
   intentionally disabled; only durable control/status feedback moves. */
#user-surface {
  --cu-motion-fast: 150ms;
  --cu-motion-medium: 220ms;
  --cu-motion-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

#user-surface .cu-msg {
  animation: none;
}

#user-surface .cu-assistant-response {
  gap: 8px;
}

#user-surface .cu-answer-meta {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 -2px 2px;
  color: var(--cu-v2-muted);
  font-size: 0.68rem;
  line-height: 1.2;
}

#user-surface .cu-answer-meta-item {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  white-space: nowrap;
}

#user-surface .cu-answer-meta-item > span {
  color: var(--cu-v2-faint);
}

#user-surface .cu-answer-meta-item > strong {
  color: var(--cu-v2-muted);
  font-size: inherit;
  font-weight: 760;
}

#user-surface .cu-answer-meta-separator {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--cu-v2-line-strong);
}

#user-surface .cu-assistant-response > .cu-msg-feedback {
  min-height: 0;
  gap: 4px;
  margin-top: -1px;
}

#user-surface .cu-msg-feedback-btn {
  min-height: 22px;
  margin: 0;
  border-color: color-mix(in srgb, var(--cu-v2-line) 78%, transparent);
  padding: 3px 7px;
  color: var(--cu-v2-faint);
  background: transparent;
  font-size: 0.66rem;
  font-weight: 650;
  line-height: 1.1;
  white-space: nowrap;
  transition:
    color var(--cu-motion-fast) var(--cu-motion-ease-out),
    border-color var(--cu-motion-fast) var(--cu-motion-ease-out),
    background-color var(--cu-motion-fast) var(--cu-motion-ease-out),
    transform var(--cu-motion-fast) var(--cu-motion-ease-out);
}

@media (hover: hover) and (pointer: fine) {
  #user-surface .cu-msg-feedback-btn:hover {
    color: var(--cu-v2-accent-strong);
    border-color: color-mix(in srgb, var(--cu-v2-accent) 32%, var(--cu-v2-line));
    background: color-mix(in srgb, var(--cu-v2-accent-soft) 56%, transparent);
  }
}

#user-surface .cu-msg-feedback-btn:active {
  transform: scale(0.975);
}

#user-surface .cu-msg-feedback-btn:focus-visible {
  outline: 2px solid var(--cu-v2-accent);
  outline-offset: 2px;
}

#user-surface .cu-msg-feedback-btn.cu-msg-feedback-active {
  color: var(--cu-v2-accent-strong);
  border-color: color-mix(in srgb, var(--cu-v2-accent) 45%, var(--cu-v2-line));
  background: var(--cu-v2-accent-soft);
}

#user-surface .cu-pending-card {
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 11px;
  align-items: start;
  padding: 2px 0 4px;
}

#user-surface .cu-pending-card::after {
  display: none;
  animation: none;
}

#user-surface .cu-pending-orbit,
#user-surface .cu-pending-card-stale .cu-pending-orbit {
  width: 30px;
  height: 30px;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 24%, var(--cu-v2-line));
  background: var(--cu-v2-panel-2);
  box-shadow: none;
  animation: none;
}

#user-surface .cu-pending-orbit::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 2px solid color-mix(in srgb, var(--cu-v2-accent) 22%, transparent);
  border-top-color: var(--cu-v2-accent);
  border-radius: 50%;
  animation: cu-process-ring 1.25s linear infinite;
}

#user-surface .cu-pending-orbit span {
  inset: 9px;
  background: var(--cu-v2-accent);
  box-shadow: none;
}

#user-surface .cu-pending-card-stale .cu-pending-orbit {
  border-color: color-mix(in srgb, var(--cu-v2-brass) 36%, var(--cu-v2-line));
}

#user-surface .cu-pending-card-stale .cu-pending-orbit::before {
  border-color: color-mix(in srgb, var(--cu-v2-brass) 22%, transparent);
  border-top-color: var(--cu-v2-brass);
  animation-duration: 1.8s;
}

#user-surface .cu-pending-card-stale .cu-pending-orbit span {
  background: var(--cu-v2-brass);
}

#user-surface .cu-pending-copy {
  min-width: 0;
}

#user-surface .cu-pending-title {
  display: block;
  margin: 1px 0 4px;
  color: var(--cu-v2-ink);
  font-size: 0.84rem;
  font-weight: 790;
  line-height: 1.25;
}

#user-surface .cu-pending-copy .cu-pending-description {
  max-width: 74ch;
  margin: 0 0 8px;
  color: var(--cu-v2-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

#user-surface .cu-pending-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px 9px;
  margin-bottom: 8px;
}

#user-surface .cu-pending-meta .cu-job-meta,
#user-surface .cu-pending-meta .cu-pending-recovery-meta {
  gap: 5px;
  margin: 0;
}

#user-surface .cu-pending-meta .cu-job-pill,
#user-surface .cu-pending-meta .cu-job-attempt {
  min-height: 20px;
  padding: 2px 7px;
  font-size: 0.65rem;
  letter-spacing: 0.01em;
}

#user-surface .cu-pending-meta .cu-pending-recovery-meta span {
  min-height: 0;
  border: 0;
  padding: 0;
  color: var(--cu-v2-faint);
  background: transparent;
  font-size: 0.65rem;
  font-weight: 650;
  letter-spacing: 0;
}

#user-surface .cu-pending-meta .cu-pending-recovery-meta span + span::before {
  content: "·";
  margin-right: 5px;
  color: var(--cu-v2-line-strong);
}

#user-surface .cu-pending-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  max-width: 620px;
  border-top: 1px solid var(--cu-v2-line);
  padding-top: 8px;
}

#user-surface .cu-pending-step {
  min-width: 0;
  border: 0;
  border-radius: 0;
  padding: 2px 0;
  color: var(--cu-v2-faint);
  background: transparent;
  font-size: 0.68rem;
  font-weight: 680;
  letter-spacing: 0;
  line-height: 1.25;
}

#user-surface .cu-pending-step::before {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  background: var(--cu-v2-line-strong);
  box-shadow: none;
}

#user-surface .cu-pending-step-0,
#user-surface .cu-pending-step-1 {
  color: var(--cu-v2-faint);
}

#user-surface .cu-pending-step-0::before {
  background: var(--cu-v2-line-strong);
}

#user-surface .cu-pending-step-1 {
  border: 0;
  background: transparent;
}

#user-surface .cu-pending-step-1::before {
  background: var(--cu-v2-line-strong);
  box-shadow: none;
}

#user-surface .cu-pending-card-stale .cu-pending-step,
#user-surface .cu-pending-card-stale .cu-pending-step-1 {
  border: 0;
  color: var(--cu-v2-muted);
  background: transparent;
}

#user-surface .cu-pending-card-stale .cu-pending-step::before {
  background: var(--cu-v2-brass);
  box-shadow: none;
}

#user-surface .cu-pending-actions {
  margin-top: 8px;
}

#user-surface .cu-pending-refresh {
  min-height: 28px;
  padding: 5px 9px;
  font-size: 0.68rem;
  transition:
    color var(--cu-motion-fast) var(--cu-motion-ease-out),
    border-color var(--cu-motion-fast) var(--cu-motion-ease-out),
    background-color var(--cu-motion-fast) var(--cu-motion-ease-out),
    transform var(--cu-motion-fast) var(--cu-motion-ease-out);
}

#user-surface .cu-pending-refresh:active {
  transform: scale(0.98);
}

#user-surface .cu-mode-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 26px;
  align-items: center;
  gap: 4px;
  border-radius: 8px;
  padding: 2px 3px;
}

#user-surface .cu-mode-panel-head {
  min-width: 0;
  order: 2;
  align-self: center;
  justify-self: end;
  padding: 0;
}

#user-surface .cu-mode-title {
  display: none;
}

#user-surface .cu-mode-toggle {
  order: 1;
  width: 100%;
  max-width: none;
  border-radius: 7px;
  padding: 2px;
}

#user-surface .cu-mode-btn {
  position: relative;
  min-width: 0;
  min-height: 28px;
  overflow: hidden;
  border-radius: 5px;
  padding: 3px 8px;
  text-align: center;
  transition:
    color var(--cu-motion-fast) var(--cu-motion-ease-out),
    background-color var(--cu-motion-fast) var(--cu-motion-ease-out),
    box-shadow var(--cu-motion-fast) var(--cu-motion-ease-out),
    transform var(--cu-motion-fast) var(--cu-motion-ease-out);
}

#user-surface .cu-mode-btn::after {
  content: "";
  position: absolute;
  right: 8px;
  bottom: 2px;
  left: 8px;
  height: 1px;
  border-radius: 999px;
  background: currentColor;
  opacity: 0.62;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--cu-motion-medium) var(--cu-motion-ease-out);
}

#user-surface .cu-mode-btn.cu-active::after,
#user-surface .cu-mode-btn[aria-pressed="true"]::after {
  transform: scaleX(1);
}

#user-surface .cu-mode-btn:not(:disabled):active {
  transform: scale(0.985);
}

#user-surface .cu-mode-btn strong {
  display: block;
  overflow: hidden;
  font-size: 0.7rem;
  line-height: 1.1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#user-surface .cu-mode-btn small {
  display: none;
}

#user-surface .cu-citations-more > summary {
  transition:
    color var(--cu-motion-fast) var(--cu-motion-ease-out),
    border-color var(--cu-motion-fast) var(--cu-motion-ease-out),
    background-color var(--cu-motion-fast) var(--cu-motion-ease-out),
    transform var(--cu-motion-fast) var(--cu-motion-ease-out);
}

#user-surface .cu-citations-more > summary:active {
  transform: scale(0.99);
}

@keyframes cu-process-ring {
  to { transform: rotate(360deg); }
}

@media (max-width: 760px) {
  #user-surface .cu-mode-btn {
    padding-inline: 4px;
  }

  #user-surface .cu-mode-btn strong {
    font-size: 0;
  }

  #user-surface .cu-mode-btn strong::after {
    content: attr(data-short-label);
    font-size: 0.67rem;
    line-height: 1.1;
  }

  #user-surface .cu-pending-card {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 9px;
  }

  #user-surface .cu-pending-orbit,
  #user-surface .cu-pending-card-stale .cu-pending-orbit {
    width: 26px;
    height: 26px;
  }

  #user-surface .cu-pending-orbit span {
    inset: 8px;
  }

  #user-surface .cu-pending-steps {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  #user-surface .cu-msg-feedback {
    max-width: 100%;
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  #user-surface .cu-pending-orbit::before {
    animation: none;
  }

  #user-surface .cu-mode-btn,
  #user-surface .cu-mode-btn::after,
  #user-surface .cu-msg-feedback-btn,
  #user-surface .cu-pending-refresh,
  #user-surface .cu-citations-more > summary {
    transition-duration: 0.01ms;
  }

  #user-surface .cu-mode-btn,
  #user-surface .cu-mode-btn::after,
  #user-surface .cu-msg-feedback-btn,
  #user-surface .cu-pending-refresh,
  #user-surface .cu-citations-more > summary {
    transform: none;
  }
}

@media (max-width: 370px) {
  #user-surface .cu-header {
    gap: 4px;
  }

  #user-surface .cu-header-actions {
    gap: 4px;
  }

  #user-surface .cu-header .cu-toolbar-menu-summary {
    gap: 5px;
    padding-inline: 7px;
    font-size: 0.72rem;
  }
}

/* Phase116: source references are a single answer-to-evidence path. Keep the
   response stack aligned so feedback cannot drift between answer and sources. */
#user-surface .cu-assistant-response {
  display: grid;
  box-sizing: border-box;
  gap: 10px;
  max-width: 100%;
  min-width: 0;
}

#user-surface .cu-assistant-response > .cu-simple-mode-note,
#user-surface .cu-assistant-response > .cu-msg-feedback,
#user-surface .cu-assistant-response > .cu-citation-navigation-mount,
#user-surface .cu-assistant-response > .cu-citations {
  margin: 0;
}

#user-surface .cu-assistant-response > .cu-msg-feedback {
  display: inline-flex;
  width: fit-content;
  min-height: 30px;
  align-items: center;
  gap: 7px;
  justify-self: start;
  padding: 0;
}

#user-surface .cu-assistant-response .cu-msg-feedback-btn {
  margin: 0;
}

#user-surface .cu-citation-navigation-mount {
  min-width: 0;
}

#user-surface .cu-citations-navigation .cu-citations-list {
  gap: 0;
}

#user-surface .cu-citations-navigation .cu-citation-reference-group {
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

#user-surface .cu-citations-navigation .cu-citation-reference-group + .cu-citation-reference-group {
  border-top: 1px solid var(--cu-v2-line);
}

#user-surface .cu-citations-navigation .cu-citation-reference-heading {
  display: flex;
  min-height: 30px;
  align-items: center;
  gap: 7px;
  padding: 9px 0 2px;
  color: var(--cu-v2-muted);
  font-size: 0.74rem;
  font-weight: 760;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

#user-surface .cu-citations-navigation .cu-citation-reference-badge {
  display: inline-grid;
  min-width: 29px;
  min-height: 23px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 45%, var(--cu-v2-line));
  border-radius: 999px;
  padding: 2px 6px;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-accent-soft);
  font-size: 0.72rem;
  font-weight: 820;
  letter-spacing: 0;
}

#user-surface .cu-citations-navigation .cu-citation-reference-pages {
  margin: 0;
  padding: 0;
  list-style: none;
}

#user-surface .cu-citations-navigation .cu-citation-reference-highlight {
  border-radius: 8px;
  background: color-mix(in srgb, var(--cu-v2-accent) 14%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--cu-v2-accent) 62%, transparent);
  transition: background 160ms ease, box-shadow 160ms ease;
}

#user-surface .cu-citation-marker {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  white-space: nowrap;
}

#user-surface .cu-citation-marker-button {
  display: inline-grid;
  min-width: 1.7em;
  min-height: 1.7em;
  place-items: center;
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 38%, var(--cu-v2-line));
  border-radius: 5px;
  padding: 0 0.28em;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-accent-soft);
  cursor: pointer;
  font: inherit;
  font-size: 0.82em;
  font-weight: 760;
  line-height: 1;
  text-decoration: none;
  vertical-align: baseline;
}

#user-surface .cu-citation-marker-button:hover,
#user-surface .cu-citation-marker-button:focus-visible {
  border-color: var(--cu-v2-accent);
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 72%, var(--cu-v2-panel));
  outline: none;
}

#user-surface .cu-citation-marker-button:focus-visible {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--cu-v2-accent) 40%, transparent);
}

#user-surface .cu-citation-marker-item {
  position: relative;
  display: inline-flex;
  align-items: baseline;
}

#user-surface .cu-citation-marker-preview {
  position: fixed;
  box-sizing: border-box;
  z-index: 1105;
  isolation: isolate;
  width: min(380px, calc(100vw - 28px), var(--cu-citation-preview-max-width, 380px));
  max-height: min(300px, 55vh, var(--cu-citation-preview-max-height, 300px));
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 24%, var(--cu-v2-line));
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--cu-v2-ink);
  background: color-mix(in srgb, var(--cu-v2-panel) 96%, white 4%);
  box-shadow: none;
  cursor: text;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.45;
  text-align: start;
  white-space: normal;
  overflow-wrap: anywhere;
  filter: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(5px);
  transition: opacity 120ms cubic-bezier(.22, 1, .36, 1), transform 120ms cubic-bezier(.22, 1, .36, 1), visibility 0s linear 120ms;
  user-select: text;
}

html[data-theme="dark"] #user-surface .cu-citation-marker-preview {
  border-color: color-mix(in srgb, var(--cu-v2-line-strong) 82%, transparent);
  background: var(--cu-v2-panel);
  box-shadow: none;
}

@media (forced-colors: active) {
  #user-surface .cu-citation-marker-preview {
    border-color: CanvasText;
    color: CanvasText;
    background: Canvas;
    box-shadow: none;
  }
}

#user-surface .cu-citation-marker-preview-bridge {
  position: absolute;
  inset: 100% 0 auto;
  height: 10px;
  pointer-events: auto;
}

#user-surface .cu-citation-marker-preview[data-cu-citation-preview-open="1"] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity 140ms cubic-bezier(.22, 1, .36, 1), transform 140ms cubic-bezier(.22, 1, .36, 1), visibility 0s;
}

#user-surface::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1090;
  pointer-events: none;
  background: rgba(8, 15, 13, 0.88);
  opacity: 0;
  visibility: hidden;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  will-change: opacity;
  transition: opacity 140ms cubic-bezier(.22, 1, .36, 1), visibility 0s linear 140ms;
}

#user-surface[data-cu-citation-attention="1"]::before {
  opacity: 0.28;
  visibility: visible;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

html[data-theme="dark"] #user-surface::before {
  background: rgba(0, 0, 0, 0.76);
}

@media (prefers-reduced-motion: reduce) {
  #user-surface::before,
  #user-surface .cu-citation-marker-preview,
  #user-surface .cu-citation-marker-preview[data-cu-citation-preview-open="1"] {
    transition: none;
    transform: none;
    will-change: auto;
  }
}

@media (forced-colors: active) {
  #user-surface[data-cu-citation-attention="1"]::before {
    background: Canvas;
    opacity: 0.2;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

#user-surface .cu-citation-marker-preview[data-cu-citation-preview-placement="below"] .cu-citation-marker-preview-bridge {
  inset: auto 0 100%;
}

#user-surface .cu-citation-marker-preview-fragment {
  display: block;
  margin-top: 9px;
  color: color-mix(in srgb, var(--cu-v2-ink) 84%, transparent);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

#user-surface .cu-citation-marker-preview-excerpt-label,
#user-surface .cu-citation-marker-preview-exact-label {
  display: block;
  margin-top: 9px;
  color: var(--cu-v2-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.025em;
}

#user-surface .cu-citation-marker-preview-exact-chunk {
  display: block;
  max-width: 100%;
  margin-top: 5px;
  color: var(--cu-v2-ink);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

#user-surface .cu-citation-marker-preview-status {
  display: block;
  margin-top: 9px;
  padding-top: 7px;
  border-top: 1px solid color-mix(in srgb, var(--cu-v2-line) 82%, transparent);
  color: var(--cu-v2-muted);
  font-size: 10px;
}

#user-surface .cu-citation-marker-preview-title {
  display: block;
  color: var(--cu-v2-ink);
  font-size: 12px;
  font-weight: 720;
  line-height: 1.3;
  letter-spacing: 0.005em;
}

#user-surface .cu-citation-marker-preview-meta {
  margin-top: 4px;
  color: color-mix(in srgb, var(--cu-v2-ink) 62%, transparent);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.25;
}

/* The document title and page form a quiet header, not the first excerpt line. */
#user-surface .cu-citation-marker-preview-title:has(+ .cu-citation-marker-preview-fragment),
#user-surface .cu-citation-marker-preview-title:has(+ .cu-citation-marker-preview-unavailable),
#user-surface .cu-citation-marker-preview-title:has(+ .cu-citation-marker-preview-excerpt-label),
#user-surface .cu-citation-marker-preview-title:has(+ .cu-citation-marker-preview-exact-label),
#user-surface .cu-citation-marker-preview-meta:has(+ .cu-citation-marker-preview-fragment),
#user-surface .cu-citation-marker-preview-meta:has(+ .cu-citation-marker-preview-unavailable),
#user-surface .cu-citation-marker-preview-meta:has(+ .cu-citation-marker-preview-excerpt-label),
#user-surface .cu-citation-marker-preview-meta:has(+ .cu-citation-marker-preview-exact-label) {
  border-bottom: 1px solid color-mix(in srgb, var(--cu-v2-line) 82%, transparent);
  padding-bottom: 7px;
}

#user-surface .cu-citation-marker-preview-fragment + .cu-citation-marker-preview-title {
  margin-top: 10px;
  padding-top: 9px;
  border-top: 1px solid color-mix(in srgb, var(--cu-v2-line) 74%, transparent);
}

#user-surface .cu-citation-marker-preview-fragment + .cu-citation-marker-preview-fragment {
  margin-top: 8px;
  border-top: 1px solid color-mix(in srgb, var(--cu-v2-line) 74%, transparent);
  padding-top: 8px;
}

@media (max-width: 620px) {
  #user-surface .cu-assistant-response {
    gap: 8px;
  }

  #user-surface .cu-citation-marker {
    gap: 1px;
  }

  #user-surface .cu-citation-marker-button {
    min-height: 1.85em;
  }
}

@media (max-width: 680px) {
  #user-surface .cu-main {
    padding: 16px;
  }

  #user-surface .cu-thread-region {
    padding: 14px;
  }

  #user-surface .cu-toolbar {
    gap: 8px;
  }

  #user-surface .cu-toolbar-group,
  #user-surface .cu-toolbar-group-session {
    width: 100%;
    margin-left: 0;
  }
}

@media (max-width: 520px) {
  #user-surface .cu-shell,
  #user-surface .cu-shell.cu-mock {
    padding: 14px;
  }

  #user-surface .cu-main {
    padding: 14px;
    border-radius: 18px;
  }

  #user-surface .cu-cabinet-grid,
  #user-surface .cu-doc-detail-grid {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-shell.cu-shell-login-gate {
    padding: 12px;
  }

  #user-surface .cu-shell.cu-shell-login-gate .cu-login-gate-card {
    padding: 22px 18px;
  }

  #user-surface .cu-shell.cu-shell-login-gate .cu-login-gate-actions {
    gap: 8px;
  }

  #user-surface .cu-shell.cu-shell-login-gate .cu-btn-primary,
  #user-surface .cu-shell.cu-shell-login-gate .cu-btn-secondary {
    width: 100%;
    justify-content: center;
  }

  #user-surface .cu-header h2.cu-title {
    line-height: 1.04;
  }

  #user-surface .cu-composer-actions {
    flex-direction: column;
    align-items: stretch;
  }

  #user-surface .cu-composer-actions .cu-send {
    width: 100%;
  }

  #user-surface .cu-status-line {
    min-height: 20px;
  }
}
.cu-meter-foot {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  color: var(--muted, #888);
}
.cu-meter-note {
  margin-top: 6px;
  font-size: 0.66rem;
  line-height: 1.45;
  color: var(--muted, #888);
}
@media (max-width: 390px) {
  .cu-usage-meter { padding: 8px; font-size: 0.7rem; }
  .cu-meter-foot { font-size: 0.62rem; }
  .cu-meter-note { font-size: 0.6rem; }
}

/* ============================================================
 * U3P — professional first-tester cabinet pass
 * Darker, calmer, less pill-heavy, and more intentionally structured.
 * ============================================================ */
#user-surface .cu-shell,
#user-surface .cu-shell.cu-mock {
  padding: 20px;
  gap: 20px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.28);
  background:
    radial-gradient(circle at top right, rgba(122, 100, 72, 0.08), transparent 16%),
    linear-gradient(180deg, #141816 0%, #101311 100%);
}

#user-surface .cu-sidebar {
  padding: 16px 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(24, 29, 28, 0.98);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

#user-surface .cu-sidebar-head {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-btn-new-conv {
  width: 100%;
  min-height: 46px;
  border-radius: 12px;
  justify-content: center;
}

#user-surface .cu-usage-meter {
  margin-top: 12px;
  padding: 14px 14px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.025);
}

#user-surface .cu-meter-row {
  align-items: baseline;
}

#user-surface .cu-conv-list {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-conv-item {
  border: 1px solid transparent;
  border-radius: 12px;
}

#user-surface .cu-conv-item.cu-active {
  border-color: rgba(255, 255, 255, 0.08);
}

#user-surface .cu-main {
  padding: 24px;
  display: grid;
  gap: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: #1b201f;
}

#user-surface .cu-mock-banner {
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid rgba(138, 103, 68, 0.24);
  background: rgba(138, 103, 68, 0.12);
}

#user-surface .cu-header {
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-header h2.cu-title {
  max-width: 11ch;
  font-size: clamp(2rem, 3vw, 2.7rem);
}

#user-surface .cu-header p.cu-subtitle {
  max-width: 58ch;
  font-size: 0.94rem;
  line-height: 1.6;
}

#user-surface .cu-cabinet-note {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(220px, 0.8fr);
  grid-template-areas:
    "head chips"
    "grid grid";
  gap: 18px 20px;
  padding: 20px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-top: 3px solid rgba(138, 103, 68, 0.5);
  background: #1f2423;
}

#user-surface .cu-cabinet-note-head {
  grid-area: head;
}

#user-surface .cu-cabinet-note-title {
  margin-bottom: 6px;
  font-size: 1.22rem;
}

#user-surface .cu-cabinet-note-body {
  max-width: 62ch;
  font-size: 0.86rem;
}

#user-surface .cu-cabinet-chip-row {
  grid-area: chips;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  align-content: start;
}

#user-surface .cu-cabinet-chip {
  min-height: 38px;
  padding: 8px 10px;
  border-radius: 11px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.74rem;
  line-height: 1.35;
}

#user-surface .cu-cabinet-grid {
  grid-area: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

#user-surface .cu-cabinet-card {
  border-radius: 15px;
  padding: 18px;
  border: 1px solid rgba(18, 20, 18, 0.1);
  box-shadow: none;
}

#user-surface .cu-cabinet-card-account {
  grid-column: span 4;
  background: #e8dfd1;
  border-top: 3px solid #7a6448;
}

#user-surface .cu-cabinet-card-sources {
  grid-column: span 8;
  background: #18201f;
  border-color: rgba(255, 255, 255, 0.08);
  border-top: 3px solid rgba(64, 99, 94, 0.78);
  color: #ebe7de;
}

#user-surface .cu-cabinet-card-sources .cu-cabinet-card-title,
#user-surface .cu-cabinet-card-docs .cu-cabinet-card-title,
#user-surface .cu-cabinet-card-handoff .cu-cabinet-card-title {
  color: #f2ece2;
}

#user-surface .cu-cabinet-card-sources .cu-cabinet-card-body,
#user-surface .cu-cabinet-card-docs .cu-cabinet-card-body,
#user-surface .cu-cabinet-card-handoff .cu-cabinet-card-body {
  color: #d1d6ce;
}

#user-surface .cu-cabinet-card-docs {
  grid-column: 1 / -1;
  padding: 18px;
  background: #151b1a;
  border-color: rgba(255, 255, 255, 0.08);
  border-top: 3px solid #7a6448;
}

#user-surface .cu-cabinet-card-handoff {
  grid-column: 1 / -1;
  padding: 18px;
  background: #1d1815;
  border-color: rgba(255, 255, 255, 0.08);
  border-top: 3px solid rgba(138, 103, 68, 0.78);
}

#user-surface .cu-cabinet-card-handoff .cu-card-checklist {
  list-style: none;
  padding: 0;
  gap: 12px;
}

#user-surface .cu-cabinet-card-handoff .cu-card-checklist li {
  position: relative;
  padding: 12px 14px 12px 30px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #ede7dc;
}

#user-surface .cu-cabinet-card-handoff .cu-card-checklist li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 18px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: rgba(214, 174, 130, 0.9);
}

#user-surface .cu-cabinet-card-title,
#user-surface .cu-doc-panel-title {
  font-size: 1rem;
  line-height: 1.25;
}

#user-surface .cu-cabinet-card-body {
  font-size: 0.84rem;
  line-height: 1.62;
}

#user-surface .cu-card-links a,
#user-surface .cu-toolbar .cu-tool-btn,
#user-surface .cu-toolbar .cu-lang-toggle,
#user-surface .cu-toolbar .cu-lang-static,
#user-surface .cu-btn-primary,
#user-surface .cu-btn-secondary,
#user-surface .cu-composer-actions .cu-send {
  border-radius: 12px;
}

#user-surface .cu-card-links a {
  min-height: 36px;
  padding: 0 12px;
  border-width: 1px;
}

#user-surface .cu-card-state {
  margin-top: 12px;
  border-radius: 10px;
  padding: 6px 10px;
}

#user-surface .cu-doc-detail-grid {
  margin-top: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

#user-surface .cu-doc-panel {
  border-radius: 12px;
  padding: 16px;
  background: rgba(235, 229, 220, 0.98);
}

#user-surface .cu-doc-panel:last-child {
  background: rgba(229, 223, 213, 0.98);
}

#user-surface .cu-doc-panel-body,
#user-surface .cu-doc-state-value,
#user-surface .cu-doc-contract-body {
  font-size: 0.81rem;
}

#user-surface .cu-doc-backend-pill {
  min-width: 84px;
  border-radius: 10px;
}

#user-surface .cu-toolbar {
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-toolbar .cu-tool-btn {
  min-height: 36px;
  padding: 0 12px;
  font-size: 0.76rem;
}

#user-surface .cu-toolbar .cu-lang-toggle button {
  border-radius: 10px;
}

#user-surface .cu-thread-region {
  min-height: 320px;
  padding: 20px;
  border-radius: 18px;
  border: 1px solid rgba(18, 20, 18, 0.08);
  background: #efe7db;
}

#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  border-left-width: 3px;
  border-radius: 12px;
}

#user-surface .cu-composer-row {
  padding: 15px;
  border-radius: 18px;
}

#user-surface .cu-composer-row textarea.cu-question {
  border-radius: 14px;
}

#user-surface .cu-empty-state {
  border-radius: 16px;
  background: rgba(242, 237, 229, 0.92);
}

#user-surface .cu-cabinet-card-handoff .cu-card-checklist {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 16px;
  margin-top: 14px;
  padding-left: 18px;
}

@media (max-width: 1160px) {
  #user-surface .cu-cabinet-card-account {
    grid-column: span 5;
  }

  #user-surface .cu-cabinet-card-sources {
    grid-column: span 7;
  }

  #user-surface .cu-cabinet-card-docs,
  #user-surface .cu-cabinet-card-handoff {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  #user-surface .cu-cabinet-note {
    grid-template-columns: 1fr;
    grid-template-areas:
      "head"
      "chips"
      "grid";
  }

  #user-surface .cu-cabinet-chip-row {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

  #user-surface .cu-cabinet-grid {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-doc-detail-grid {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-cabinet-card-handoff .cu-card-checklist {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-cabinet-card-account,
  #user-surface .cu-cabinet-card-sources,
  #user-surface .cu-cabinet-card-docs,
  #user-surface .cu-cabinet-card-handoff {
    grid-column: auto;
  }
}

@media (max-width: 520px) {
  #user-surface .cu-main {
    padding: 16px;
  }

  #user-surface .cu-cabinet-note {
    padding: 16px;
  }

  #user-surface .cu-cabinet-chip-row {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-cabinet-card,
  #user-surface .cu-cabinet-card-docs,
  #user-surface .cu-cabinet-card-handoff,
  #user-surface .cu-doc-panel {
    padding: 14px;
  }

  #user-surface .cu-thread-region {
    padding: 16px;
  }
}

/* ============================================================
 * U3AG — professional product hardening
 * Denser history rail, clearer answer/citation reading width,
 * and more actionable first-tester handoff structure.
 * ============================================================ */
#user-surface .cu-usage-meter {
  display: grid;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-conv-list {
  display: grid;
  gap: 8px;
}

#user-surface .cu-conv-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 4px;
  min-height: 58px;
  padding: 12px;
  margin-bottom: 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.03);
  white-space: normal;
  line-height: 1.35;
}

#user-surface .cu-conv-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.08);
}

#user-surface .cu-conv-item.cu-active {
  background: rgba(31, 90, 83, 0.18);
  border-color: rgba(138, 103, 68, 0.42);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

#user-surface .cu-conv-select {
  color: inherit;
  border-radius: 10px;
}

#user-surface .cu-conv-select:focus-visible {
  outline-color: #3ab99d;
  background: rgba(58, 185, 157, 0.10);
}

#user-surface .cu-conv-item-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
}

#user-surface .cu-conv-item-title {
  display: -webkit-box;
  overflow: hidden;
  flex: 1 1 auto;
  min-width: 0;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  color: #edf0ea;
  font-weight: 600;
}

#user-surface .cu-conv-research-badge {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  max-width: 112px;
  padding: 3px 7px;
  border: 1px solid rgba(58, 185, 157, 0.28);
  border-radius: 999px;
  background: rgba(58, 185, 157, 0.12);
  color: #d9fff2;
  font-size: 0.64rem;
  font-weight: 820;
  letter-spacing: 0.035em;
  line-height: 1.1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#user-surface .cu-conv-research-stale {
  border-color: rgba(194, 145, 95, 0.30);
  background: rgba(194, 145, 95, 0.07);
}

#user-surface .cu-conv-research-badge-stale {
  border-color: rgba(194, 145, 95, 0.34);
  background: rgba(194, 145, 95, 0.15);
  color: #ffe9c8;
}

#user-surface .cu-conv-research-completed {
  border-color: rgba(58, 185, 157, 0.26);
  background: rgba(58, 185, 157, 0.08);
}

#user-surface .cu-conv-research-badge-completed {
  border-color: rgba(58, 185, 157, 0.36);
  background: rgba(58, 185, 157, 0.17);
  color: #d9fff2;
}

#user-surface .cu-conv-research-failed,
#user-surface .cu-conv-research-cancelled {
  border-color: rgba(194, 145, 95, 0.30);
  background: rgba(194, 145, 95, 0.07);
}

#user-surface .cu-conv-research-badge-failed,
#user-surface .cu-conv-research-badge-cancelled {
  border-color: rgba(194, 145, 95, 0.34);
  background: rgba(194, 145, 95, 0.15);
  color: #ffe9c8;
}

@media (max-width: 390px) {
  #user-surface .cu-conv-research-badge {
    max-width: 86px;
    padding-inline: 6px;
    font-size: 0.6rem;
  }
}

#user-surface .cu-conv-item-meta {
  color: #a8b1a7;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

#user-surface .cu-conv-tabs {
  border-color: rgba(242, 223, 200, 0.10);
  background: rgba(8, 15, 13, 0.24);
}

#user-surface .cu-conv-tab {
  color: #a8b1a7;
}

#user-surface .cu-conv-tab.cu-active {
  background: rgba(58, 185, 157, 0.14);
  color: #eafdf5;
  box-shadow: inset 0 0 0 1px rgba(58, 185, 157, 0.18);
}

#user-surface .cu-folder-panel-head {
  color: #9da79c;
}

#user-surface .cu-folder-add,
#user-surface .cu-folder-chip {
  border-color: rgba(58, 185, 157, 0.18);
  background: rgba(255, 255, 255, 0.04);
  color: #d7dbd3;
}

#user-surface .cu-folder-chip.cu-active {
  border-color: rgba(58, 185, 157, 0.34);
  background: rgba(58, 185, 157, 0.13);
  color: #d9fff2;
}

#user-surface .cu-folder-count {
  background: rgba(255, 255, 255, 0.08);
}

#user-surface .cu-folder-trash-note {
  border-color: rgba(194, 145, 95, 0.24);
  background: rgba(194, 145, 95, 0.08);
  color: #f2dfc8;
}

#user-surface .cu-conv-folder-badge {
  background: rgba(58, 185, 157, 0.10);
  color: #bdeee0;
}

#user-surface .cu-conv-actions {
  gap: 5px;
}

#user-surface .cu-conv-action {
  border-color: rgba(58, 185, 157, 0.22);
  background: rgba(58, 185, 157, 0.08);
  color: #d9fff2;
}

#user-surface .cu-conv-rename {
  border-color: rgba(58, 185, 157, 0.26);
  background: rgba(58, 185, 157, 0.10);
  color: #d9fff2;
}

#user-surface .cu-conv-action:hover,
#user-surface .cu-conv-rename:hover {
  background: rgba(58, 185, 157, 0.16);
}

#user-surface .cu-move-menu {
  border-color: rgba(58, 185, 157, 0.18);
  background: rgba(12, 28, 25, 0.96);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.34);
}

#user-surface .cu-move-menu-title {
  color: rgba(214, 235, 226, 0.72);
}

#user-surface .cu-move-option {
  border-color: rgba(58, 185, 157, 0.18);
  background: rgba(58, 185, 157, 0.07);
  color: #f3fff9;
}

#user-surface .cu-move-option:hover,
#user-surface .cu-move-option:focus-visible {
  background: rgba(58, 185, 157, 0.15);
  outline-color: #3ab99d;
}

#user-surface .cu-move-option[aria-current="true"] {
  border-color: rgba(58, 185, 157, 0.42);
  background: rgba(58, 185, 157, 0.18);
}

#user-surface .cu-move-option-cancel {
  color: rgba(214, 235, 226, 0.72);
  background: transparent;
}

#user-surface .cu-conv-delete {
  border-color: rgba(234, 134, 112, 0.25);
  background: rgba(234, 134, 112, 0.10);
  color: #ffd1c6;
}

#user-surface .cu-conv-restore {
  border-color: rgba(58, 185, 157, 0.30);
  background: rgba(58, 185, 157, 0.12);
  color: #d9fff2;
}

#user-surface .cu-conv-empty {
  padding: 14px 12px;
  border-radius: 14px;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
}

#user-surface .cu-cabinet-card-account {
  display: grid;
  gap: 12px;
}

#user-surface .cu-cabinet-card-account .cu-card-links a {
  background: rgba(24, 32, 29, 0.05);
  border: 1px solid rgba(24, 32, 29, 0.12);
}

#user-surface .cu-cabinet-card-handoff .cu-card-checklist li {
  padding-right: 16px;
}

#user-surface .cu-check-title {
  display: block;
  margin-bottom: 6px;
  color: #f2dfc8;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#user-surface .cu-check-copy {
  display: block;
  color: #d7dbd3;
  font-size: 0.82rem;
  line-height: 1.55;
}

#user-surface .cu-thread-region {
  padding: 22px 24px;
  background: #efe7db;
}

#user-surface .cu-msg-user .cu-msg-body {
  background: #21574f;
  border: 1px solid rgba(21, 61, 57, 0.3);
  box-shadow: none;
}

#user-surface .cu-msg-system,
#user-surface .cu-msg-loading {
  max-width: 930px;
}

#user-surface .cu-msg-system .cu-msg-body,
#user-surface .cu-msg-loading .cu-msg-body,
#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  max-width: 930px;
}

#user-surface .cu-msg-system .cu-msg-body {
  padding: 18px 22px;
  background: #faf5ee;
  border-color: rgba(18, 20, 18, 0.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  margin-top: 14px;
  padding: 14px 16px;
  background: #f2ebe1;
  border: 1px solid rgba(18, 20, 18, 0.1);
  border-left-width: 3px;
  border-left-color: #8a6744;
}

#user-surface .cu-citation-src {
  line-height: 1.45;
}

#user-surface .cu-citation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#user-surface .cu-citation-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 10px;
  border-radius: 10px;
  border: 1px solid rgba(31, 90, 83, 0.12);
  background: rgba(31, 90, 83, 0.07);
}

#user-surface .cu-citations-head,
#user-surface .cu-citations-empty-title {
  color: #59422f;
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#user-surface .cu-empty-state {
  border: 1px dashed rgba(18, 20, 18, 0.12);
  background: #f4eee4;
}

#user-surface .cu-composer-row {
  background: #191e1d;
}

@media (max-width: 900px) {
  #user-surface .cu-thread-region {
    padding: 18px;
  }

  #user-surface .cu-msg-system,
  #user-surface .cu-msg-loading,
  #user-surface .cu-msg-system .cu-msg-body,
  #user-surface .cu-msg-loading .cu-msg-body,
  #user-surface .cu-citations,
  #user-surface .cu-citations-empty {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  #user-surface .cu-conv-item {
    min-height: 54px;
    padding: 11px 10px;
  }

  #user-surface .cu-thread-region {
    padding: 16px;
  }
}

/* ============================================================================
   U3AK — product-grade legal-workbench refinement
   ============================================================================ */
#user-surface .cu-shell,
#user-surface .cu-shell.cu-mock {
  gap: 16px;
  padding: 16px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(15, 18, 18, 0.98), rgba(20, 24, 23, 0.98));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 14px 32px rgba(0, 0, 0, 0.18);
}

#user-surface .cu-shell:has(.cu-sidebar) {
  grid-template-columns: minmax(232px, 272px) minmax(0, 1fr);
}

#user-surface .cu-sidebar {
  border-radius: 14px;
  background: #171c1b;
  border-color: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

#user-surface .cu-sidebar-head {
  gap: 10px;
}

#user-surface .cu-btn-new-conv {
  min-height: 42px;
  border-radius: 10px;
  border-color: rgba(45, 114, 103, 0.7);
  background: #21574f;
  color: #f4f1ea;
  box-shadow: none;
}

#user-surface .cu-conv-item {
  border-radius: 11px;
  border-color: rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.025);
}

#user-surface .cu-conv-item-meta {
  letter-spacing: 0.02em;
}

#user-surface .cu-main {
  border-radius: 14px;
  background: #171c1b;
  border-color: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

#user-surface .cu-header {
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-header h2.cu-title {
  font-size: clamp(1.86rem, 2.7vw, 2.45rem);
  letter-spacing: -0.03em;
}

#user-surface .cu-cabinet-note {
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-left: 4px solid rgba(138, 103, 68, 0.72);
  background: #1c2120;
  box-shadow: none;
}

#user-surface .cu-cabinet-note-title {
  font-size: 1.06rem;
}

#user-surface .cu-cabinet-note-body,
#user-surface .cu-cabinet-card-body {
  line-height: 1.58;
}

#user-surface .cu-cabinet-chip-row {
  gap: 8px;
}

#user-surface .cu-cabinet-chip {
  min-height: 30px;
  padding: 0 10px;
  border-radius: 9px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: #d9ddd5;
}

#user-surface .cu-cabinet-chip-warn {
  background: rgba(138, 103, 68, 0.16);
  border-color: rgba(138, 103, 68, 0.34);
  color: #efe2d0;
}

#user-surface .cu-cabinet-card,
#user-surface .cu-cabinet-card-main,
#user-surface .cu-cabinet-card-side {
  border-radius: 13px;
  border-color: rgba(18, 20, 18, 0.1);
  box-shadow: none;
}

#user-surface .cu-cabinet-card-main {
  border-top-width: 1px;
  border-left: 4px solid rgba(31, 90, 83, 0.55);
}

#user-surface .cu-cabinet-card-side {
  border-top-width: 1px;
  border-left: 4px solid rgba(138, 103, 68, 0.5);
}

#user-surface .cu-card-links a,
#user-surface .cu-toolbar .cu-tool-btn,
#user-surface .cu-lang-static {
  border-radius: 10px;
}

#user-surface .cu-thread-region {
  padding: 22px;
  background: #f4eee4;
}

#user-surface .cu-msg-user .cu-msg-body {
  border-radius: 14px 14px 6px 14px;
  background: #21574f;
  box-shadow: none;
}

#user-surface .cu-msg-system .cu-msg-body,
#user-surface .cu-msg-loading .cu-msg-body {
  border-radius: 14px;
}

#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  border-left-width: 4px;
  border-left-color: #7a6041;
  border-radius: 12px;
  background: #efe6d8;
  box-shadow: none;
}

#user-surface .cu-citation-link {
  border-radius: 9px;
}

#user-surface .cu-empty-state {
  border-radius: 13px;
}

#user-surface .cu-composer-row {
  border-radius: 14px;
  background: #141918;
}

#user-surface .cu-composer-row textarea.cu-question {
  border-radius: 12px;
}

#user-surface .cu-send {
  border-radius: 10px;
  background: #21574f;
  box-shadow: none;
}

@media (max-width: 900px) {
  #user-surface .cu-shell,
  #user-surface .cu-shell.cu-mock {
    padding: 14px;
  }

  #user-surface .cu-main,
  #user-surface .cu-sidebar,
  #user-surface .cu-cabinet-note {
    border-radius: 12px;
  }

  #user-surface .cu-thread-region {
    padding: 18px;
  }
}

/* ============================================================================
   U3AN — first-tester cabinet delivery pass
   ============================================================================ */
#user-surface .cu-shell,
#user-surface .cu-shell.cu-mock {
  gap: 14px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: linear-gradient(180deg, #101414 0%, #181d1c 100%);
}

#user-surface .cu-shell:has(.cu-sidebar) {
  grid-template-columns: minmax(236px, 276px) minmax(0, 1fr);
}

#user-surface .cu-sidebar,
#user-surface .cu-main {
  background: #161b1a;
  border-color: rgba(255, 255, 255, 0.08);
}

#user-surface .cu-sidebar {
  padding: 14px;
}

#user-surface .cu-sidebar-head {
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

#user-surface .cu-btn-new-conv {
  background: #245f57;
  border-color: rgba(45, 114, 103, 0.74);
}

#user-surface .cu-conv-item {
  min-height: 60px;
  padding: 12px 11px;
  background: #121616;
  border-color: rgba(255, 255, 255, 0.05);
}

#user-surface .cu-conv-item:hover {
  background: #1b2221;
}

#user-surface .cu-conv-item.cu-active {
  background: #233330;
  border-color: rgba(45, 114, 103, 0.62);
  box-shadow: inset 0 0 0 1px rgba(45, 114, 103, 0.24);
}

#user-surface .cu-conv-item-title {
  color: #f0f2ed;
}

#user-surface .cu-conv-item-meta {
  color: #b3bbb2;
}

#user-surface .cu-main {
  border-radius: 14px;
}

#user-surface .cu-header {
  padding-bottom: 16px;
}

#user-surface .cu-cabinet-note {
  background: #181d1c;
  border-left-color: rgba(138, 103, 68, 0.82);
}

#user-surface .cu-cabinet-note-title {
  color: #f3efe8;
}

#user-surface .cu-cabinet-note-body {
  color: #d3d8d1;
}

#user-surface .cu-cabinet-card-main {
  background: #e7ddce;
  border-left-color: rgba(31, 90, 83, 0.62);
}

#user-surface .cu-cabinet-card-side {
  background: #ddd2c2;
  border-left-color: rgba(138, 103, 68, 0.58);
}

#user-surface .cu-cabinet-card-title {
  color: #262723;
  letter-spacing: -0.01em;
}

#user-surface .cu-cabinet-card-body,
#user-surface .cu-card-checklist,
#user-surface .cu-doc-panel-body,
#user-surface .cu-doc-contract-list,
#user-surface .cu-doc-state-value {
  color: #474b43;
}

#user-surface .cu-card-state {
  border-radius: 8px;
  background: rgba(23, 25, 23, 0.08);
  color: #3f463d;
}

#user-surface .cu-doc-panel {
  background: #efe6d9;
  border-color: rgba(23, 25, 23, 0.12);
}

#user-surface .cu-doc-panel-title,
#user-surface .cu-doc-state-label {
  color: #262723;
}

#user-surface .cu-thread-region {
  padding: 20px;
  border-radius: 16px;
  background: #e6dccd;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

#user-surface .cu-msg-user .cu-msg-body {
  background: #245f57;
}

#user-surface .cu-msg-system .cu-msg-body,
#user-surface .cu-msg-loading .cu-msg-body {
  background: #f7f1e9;
  border-color: rgba(23, 25, 23, 0.12);
  box-shadow: none;
}

#user-surface .cu-kind-pill {
  border-radius: 8px;
  letter-spacing: 0.03em;
}

#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  padding: 12px 14px;
  border: 1px solid rgba(122, 96, 65, 0.18);
  border-left: 4px solid #7a6041;
  border-radius: 12px;
  background: #ebdfcf;
}

#user-surface .cu-citations-head,
#user-surface .cu-citations-empty-title {
  color: #635243;
  font-weight: 700;
}

#user-surface .cu-citation {
  background: #f8f2ea;
  border-color: rgba(23, 25, 23, 0.1);
}

#user-surface .cu-cite-title,
#user-surface .cu-cite-snippet {
  color: #262723;
}

#user-surface .cu-cite-meta,
#user-surface .cu-citations-empty-body {
  color: #50544d;
}

#user-surface .cu-empty-state {
  background: #e4d8c7;
  border-color: rgba(23, 25, 23, 0.16);
  color: #464a42;
}

#user-surface .cu-empty-state h3,
#user-surface .cu-empty-title {
  color: #1f211e;
}

#user-surface .cu-empty-state .cu-empty-suggestions button {
  border-color: rgba(23, 25, 23, 0.12);
  background: #f7f0e7;
  color: #292b27;
}

#user-surface .cu-composer-row {
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: #101515;
}

#user-surface .cu-composer-row textarea.cu-question {
  border-color: rgba(23, 25, 23, 0.12);
  background: #f6f0e8;
}

#user-surface .cu-composer-row textarea.cu-question::placeholder {
  color: #6b7268;
}

#user-surface .cu-toolbar .cu-tool-btn,
#user-surface .cu-lang-static {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

@media (max-width: 900px) {
  #user-surface .cu-shell,
  #user-surface .cu-shell.cu-mock {
    padding: 12px;
    border-radius: 14px;
  }

  #user-surface .cu-sidebar,
  #user-surface .cu-main,
  #user-surface .cu-thread-region {
    border-radius: 12px;
  }
}

@media (max-width: 680px) {
  #user-surface .cu-header h2.cu-title {
    font-size: clamp(1.42rem, 7.4vw, 1.86rem);
    line-height: 1.04;
    max-width: 100%;
    overflow-wrap: anywhere;
  }
}

/* ============================================================================
   U3AQ - first-tester cabinet density and trust pass
   Keeps bounded product truth intact while reducing report-like visual weight.
   ============================================================================ */
#user-surface .cu-cabinet-note {
  gap: 14px 18px;
  padding: 15px 16px;
}

#user-surface .cu-cabinet-note-body {
  max-width: 54ch;
}

#user-surface .cu-cabinet-card {
  padding: 16px;
}

#user-surface .cu-cabinet-card-docs {
  border-left: 4px solid rgba(138, 103, 68, 0.72);
  background: #131817;
}

#user-surface .cu-cabinet-card-handoff {
  background: #191513;
}

#user-surface .cu-doc-detail-grid {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 1.2fr) minmax(0, 0.92fr);
  gap: 12px;
}

#user-surface .cu-doc-panel {
  padding: 13px 14px;
  border-radius: 11px;
  background: #e7ddcf;
}

#user-surface .cu-doc-panel:last-child {
  background: #ded0bf;
}

#user-surface .cu-doc-state-list,
#user-surface .cu-doc-contract-list {
  gap: 8px;
}

#user-surface .cu-doc-state-label,
#user-surface .cu-doc-contract-title,
#user-surface .cu-check-title {
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

#user-surface .cu-doc-state-value,
#user-surface .cu-doc-contract-body,
#user-surface .cu-doc-panel-body,
#user-surface .cu-check-copy {
  line-height: 1.44;
}

#user-surface .cu-doc-backend-pill {
  min-width: 76px;
  padding-inline: 8px;
}

#user-surface .cu-meter-note {
  line-height: 1.42;
}

@media (max-width: 1120px) {
  #user-surface .cu-doc-detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #user-surface .cu-doc-panel:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  #user-surface .cu-doc-detail-grid {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-doc-panel:last-child {
    grid-column: auto;
  }
}

/* ============================================================================
   U3AR - legal workstation visual-token lock
   Keeps first-tester truth/copy unchanged while moving the cabinet away from
   soft beige gradients into a restrained, darker product surface.
   ============================================================================ */
#user-surface .cu-shell,
#user-surface .cu-shell.cu-mock {
  background:
    radial-gradient(circle at 8% 0%, rgba(58, 185, 157, 0.08), transparent 28%),
    linear-gradient(180deg, #121716 0%, #181e1c 100%);
  border-color: rgba(239, 231, 218, 0.08);
}

#user-surface .cu-sidebar,
#user-surface .cu-main,
#user-surface .cu-cabinet-note {
  background: #181e1c;
  border-color: rgba(239, 231, 218, 0.10);
}

#user-surface .cu-cabinet-note {
  border-left-color: rgba(194, 145, 95, 0.72);
}

#user-surface .cu-cabinet-card,
#user-surface .cu-cabinet-card-main,
#user-surface .cu-cabinet-card-side,
#user-surface .cu-cabinet-card-docs,
#user-surface .cu-cabinet-card-handoff {
  background: #202622;
  border-color: rgba(239, 231, 218, 0.10);
  color: #f1ede5;
}

#user-surface .cu-cabinet-card-main {
  border-left-color: rgba(58, 185, 157, 0.58);
}

#user-surface .cu-cabinet-card-side,
#user-surface .cu-cabinet-card-docs,
#user-surface .cu-cabinet-card-handoff {
  border-left-color: rgba(194, 145, 95, 0.60);
}

#user-surface .cu-cabinet-card-title,
#user-surface .cu-doc-panel-title,
#user-surface .cu-doc-state-label {
  color: #f1ede5;
}

#user-surface .cu-cabinet-card-body,
#user-surface .cu-card-checklist,
#user-surface .cu-doc-panel-body,
#user-surface .cu-doc-contract-list,
#user-surface .cu-doc-state-value,
#user-surface .cu-doc-contract-body,
#user-surface .cu-check-copy {
  color: #cbd3cb;
}

#user-surface .cu-card-state,
#user-surface .cu-cabinet-chip {
  background: rgba(239, 231, 218, 0.07);
  border-color: rgba(239, 231, 218, 0.12);
  color: #e6e0d6;
}

#user-surface .cu-doc-detail-grid .cu-doc-panel,
#user-surface .cu-doc-detail-grid .cu-doc-panel:last-child {
  background: #18211f;
  border-color: rgba(239, 231, 218, 0.10);
}

#user-surface .cu-thread-region {
  background: #202622;
  border-color: rgba(239, 231, 218, 0.09);
  box-shadow: inset 0 1px 0 rgba(239, 231, 218, 0.04);
}

#user-surface .cu-msg-system .cu-msg-body,
#user-surface .cu-msg-loading .cu-msg-body {
  background: #d8d0c1;
  border-color: rgba(18, 20, 18, 0.14);
  color: #20231f;
}

#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  background: #cfc2ae;
  border-color: rgba(122, 96, 65, 0.24);
  border-left-color: #8a6744;
  color: #252821;
}

#user-surface .cu-citation {
  background: #e5dccd;
  border-color: rgba(18, 20, 18, 0.12);
}

#user-surface .cu-citations-head,
#user-surface .cu-citations-empty-title,
#user-surface .cu-cite-title,
#user-surface .cu-cite-snippet {
  color: #252821;
}

#user-surface .cu-cite-meta,
#user-surface .cu-citations-empty-body {
  color: #4a4e45;
}

#user-surface .cu-empty-state {
  background: #1b211f;
  border-color: rgba(239, 231, 218, 0.12);
  color: #cbd3cb;
}

#user-surface .cu-empty-state h3,
#user-surface .cu-empty-title {
  color: #f1ede5;
}

#user-surface .cu-empty-state .cu-empty-suggestions button {
  background: rgba(58, 185, 157, 0.12);
  border-color: rgba(58, 185, 157, 0.22);
  color: #eaf4ee;
}

#user-surface .cu-composer-row {
  background: #121716;
  border-color: rgba(239, 231, 218, 0.08);
}

#user-surface .cu-composer-row textarea.cu-question {
  background: #e7dfd1;
  border-color: rgba(18, 20, 18, 0.14);
  color: #20231f;
}

#user-surface .cu-issue-report-btn,
#user-surface .cu-btn-new-conv,
#user-surface .cu-toolbar .cu-tool-btn,
#user-surface .cu-citation-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
}

#user-surface .cu-issue-report-btn {
  padding: 0 14px;
  border: 1px solid rgba(239, 231, 218, 0.14);
  border-radius: 12px;
  background: rgba(239, 231, 218, 0.08);
  color: #f1ede5;
  font-weight: 700;
  cursor: pointer;
}

#user-surface .cu-btn-new-conv,
#user-surface .cu-toolbar .cu-tool-btn {
  padding-top: 0;
  padding-bottom: 0;
}

#user-surface .cu-citation-link {
  padding: 0 12px;
  border: 1px solid rgba(31, 90, 83, 0.14);
  border-radius: 10px;
  background: rgba(31, 90, 83, 0.08);
}

/* ============================================================================
   U3AS - mobile first-tester flow compression
   Keep the accepted truth copy, but stop mobile from hiding the dialogue behind
   a long explanation wall. The chat path comes first; supporting notes stay below.
   ============================================================================ */
@media (max-width: 760px) {
  #user-surface .cu-main {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  #user-surface .cu-header {
    order: 1;
    padding-bottom: 4px;
  }

  #user-surface .cu-mock-banner {
    order: 2;
  }

  #user-surface .cu-thread-region {
    order: 3;
    min-height: 260px;
  }

  #user-surface .cu-composer-row {
    order: 4;
    position: sticky;
    bottom: 8px;
    z-index: 3;
    box-shadow: 0 -10px 28px rgba(7, 10, 9, 0.34);
  }

  #user-surface .cu-toolbar {
    order: 5;
  }

  #user-surface .cu-cabinet-note {
    order: 6;
    padding: 12px;
    gap: 10px;
  }

  #user-surface .cu-cabinet-note-body,
  #user-surface .cu-cabinet-card-body,
  #user-surface .cu-doc-panel-body,
  #user-surface .cu-doc-state-value,
  #user-surface .cu-doc-contract-body,
  #user-surface .cu-check-copy {
    font-size: 0.82rem;
    line-height: 1.42;
  }

  #user-surface .cu-cabinet-grid,
  #user-surface .cu-doc-detail-grid {
    gap: 8px;
  }

  #user-surface .cu-cabinet-card,
  #user-surface .cu-doc-panel {
    padding: 11px;
  }

  #user-surface .cu-cabinet-chip-row,
  #user-surface .cu-card-links {
    display: none;
  }
}

@media (max-width: 520px) {
  #user-surface .cu-thread-region {
    min-height: 230px;
  }

  #user-surface .cu-composer-row {
    grid-template-columns: 1fr;
  }

  #user-surface .cu-composer-actions {
    align-items: stretch;
  }

  #user-surface .cu-send {
    width: 100%;
  }
}

/* ============================================================================
   Phase104 live-tester fix: make answer mode discoverable.
   The default mode is still AI RAG, not a source lookup shortcut.
   ============================================================================ */
.cu-mode-panel {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(31, 90, 83, 0.22);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(31, 90, 83, 0.08) 0%, rgba(255, 255, 255, 0.82) 100%);
}

.cu-mode-panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.cu-mode-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.cu-mode-panel .cu-mode-label {
  padding: 0;
  color: var(--ink);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cu-mode-badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border: 1px solid rgba(31, 90, 83, 0.22);
  border-radius: 999px;
  background: rgba(31, 90, 83, 0.1);
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 700;
}

.cu-mode-toggle {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  padding: 4px;
}

.cu-mode-btn {
  min-height: 54px;
  border: 1px solid rgba(31, 90, 83, 0.12);
  padding: 9px 12px;
}

.cu-mode-btn strong {
  font-size: 0.9rem;
}

.cu-mode-btn small {
  font-size: 0.73rem;
  line-height: 1.22;
}

.cu-mode-btn.cu-active {
  border-color: rgba(31, 90, 83, 0.58);
  box-shadow: 0 10px 22px rgba(31, 90, 83, 0.16);
}

#user-surface .cu-mode-panel {
  border-color: rgba(216, 208, 193, 0.16);
  background: linear-gradient(180deg, rgba(216, 208, 193, 0.1) 0%, rgba(255, 255, 255, 0.045) 100%);
}

#user-surface .cu-mode-panel .cu-mode-label {
  color: #efe7da;
}

#user-surface .cu-mode-badge {
  border-color: rgba(216, 208, 193, 0.26);
  background: rgba(216, 208, 193, 0.12);
  color: #efe7da;
}

#user-surface .cu-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

#user-surface .cu-header-copy {
  min-width: 0;
}

.cu-mode-current-pill {
  display: inline-grid;
  gap: 2px;
  min-width: 190px;
  padding: 10px 12px;
  border: 1px solid rgba(31, 90, 83, 0.22);
  border-radius: 14px;
  background: rgba(31, 90, 83, 0.08);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.cu-mode-current-pill strong {
  font-size: 0.94rem;
  line-height: 1.2;
}

.cu-mode-current-label,
.cu-mode-current-action {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cu-mode-current-label {
  color: var(--muted);
}

.cu-mode-current-action {
  color: #1f5a53;
}

.cu-mode-current-pill[data-query-mode="advanced"] {
  border-color: rgba(31, 90, 83, 0.42);
  box-shadow: 0 10px 22px rgba(31, 90, 83, 0.12);
}

#user-surface .cu-mode-current-pill {
  border-color: rgba(216, 208, 193, 0.22);
  background: rgba(216, 208, 193, 0.1);
  color: #efe7da;
}

#user-surface .cu-mode-current-label {
  color: #bec8c0;
}

#user-surface .cu-mode-current-action {
  color: #d8d0c1;
}

#user-surface .cu-mode-current-pill:disabled {
  cursor: wait;
  opacity: 0.72;
}

#user-surface .cu-mode-toggle {
  background: rgba(17, 22, 20, 0.74);
  border-color: rgba(255, 255, 255, 0.12);
}

#user-surface .cu-mode-btn {
  border-color: rgba(239, 231, 218, 0.1);
}

#user-surface .cu-mode-btn.cu-mode-unavailable {
  border-color: rgba(216, 208, 193, 0.2);
  background: rgba(216, 208, 193, 0.04);
}

#user-surface .cu-mode-btn.cu-mode-unavailable strong {
  color: #bec8c0;
}

#user-surface .cu-mode-btn.cu-active {
  border-color: rgba(216, 208, 193, 0.64);
  box-shadow: 0 10px 24px rgba(216, 208, 193, 0.12);
}

@media (max-width: 760px) {
  #user-surface .cu-header {
    display: grid;
    gap: 10px;
  }

  #user-surface .cu-mode-current-pill,
  .cu-mode-current-pill {
    width: 100%;
    min-width: 0;
  }

  #user-surface .cu-mode-panel-head,
  .cu-mode-panel-head {
    display: grid;
    gap: 4px;
  }

  #user-surface .cu-mode-toggle,
  .cu-mode-toggle {
    grid-template-columns: 1fr;
  }
}

/* Keep the working controls where humans expect them: after the chat history. */
#user-surface .cu-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#user-surface .cu-mock-banner {
  order: 1;
}

#user-surface .cu-header {
  order: 2;
}

#user-surface .cu-composer-row {
  order: 4;
  position: sticky;
  bottom: max(12px, env(safe-area-inset-bottom));
  z-index: 12;
  box-shadow: 0 -18px 34px rgba(18, 23, 21, 0.24);
}

#user-surface .cu-thread-region {
  order: 3;
}

#user-surface .cu-toolbar {
  order: 5;
}

/* Phase104 human-first toolbar: keep conversation actions visible, fold account/session controls. */
#user-surface .cu-toolbar-menu {
  position: relative;
  margin-left: auto;
}

#user-surface .cu-toolbar-menu-summary {
  list-style: none;
  cursor: pointer;
}

#user-surface .cu-toolbar-menu-summary:focus-visible {
  outline: 3px solid #3ab99d;
  outline-offset: 3px;
}

#user-surface .cu-toolbar-menu-summary::-webkit-details-marker {
  display: none;
}

#user-surface .cu-toolbar-menu-summary::after {
  content: "+";
  margin-left: 8px;
  font-weight: 800;
  opacity: 0.78;
}

#user-surface .cu-toolbar-menu[open] .cu-toolbar-menu-summary::after {
  content: "-";
}

#user-surface .cu-toolbar-menu .cu-toolbar-group-session {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 10;
  display: grid;
  min-width: min(280px, calc(100vw - 32px));
  max-width: min(360px, calc(100vw - 32px));
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(18, 22, 21, 0.98);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32);
}

#user-surface .cu-toolbar-menu:not([open]) .cu-toolbar-group-session {
  display: none;
}

#user-surface .cu-toolbar-menu .cu-lang-toggle {
  margin-left: 0;
  justify-content: space-between;
}

#user-surface .cu-toolbar-menu .cu-tool-btn,
#user-surface .cu-toolbar-menu .cu-lang-toggle {
  width: 100%;
}

#user-surface .cu-cabinet-note {
  order: 6;
}

/* Long legal answers should read as a document, not as a cut-off inner pane. */
#user-surface .cu-thread-region {
  max-height: none;
  overflow-y: visible;
}

/* Phase104 human-first DOM order: chat is first for keyboard/screen readers,
   while desktop keeps the familiar left history rail visually. */
#user-surface .cu-shell:has(.cu-sidebar) {
  display: grid;
  grid-template-columns: minmax(236px, 276px) minmax(0, 1fr);
  grid-template-areas: "sidebar main";
}

#user-surface .cu-sidebar {
  grid-area: sidebar;
}

#user-surface .cu-main {
  grid-area: main;
}

/* Keep mode choice in a bottom dock so it never separates answers from typing. */
#user-surface .cu-composer-row {
  gap: 8px;
}

#user-surface .cu-composer-row textarea.cu-question {
  order: 1;
}

#user-surface .cu-composer-actions {
  order: 2;
}

#user-surface .cu-mode-panel {
  order: 3;
}

#user-surface .cu-mode-panel {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(220px, 380px);
  align-items: center;
  justify-content: space-between;
  gap: 8px 10px;
  padding: 7px 8px 6px;
  border-top: 1px solid rgba(216, 208, 193, 0.14);
  border-radius: 12px;
  background: rgba(18, 23, 21, 0.16);
  box-shadow: none;
}

#user-surface .cu-mode-panel-head {
  min-width: 0;
}

#user-surface .cu-mode-title {
  gap: 6px;
}

#user-surface .cu-mode-panel .cu-mode-label {
  font-size: 0.7rem;
}

#user-surface .cu-mode-badge {
  min-height: 22px;
  padding: 2px 7px;
  font-size: 0.66rem;
}

#user-surface .cu-mode-toggle {
  gap: 6px;
  padding: 3px;
  width: auto;
}

#user-surface .cu-mode-btn {
  min-height: 34px;
  padding: 6px 8px;
}

#user-surface .cu-mode-btn strong {
  font-size: 0.82rem;
}

#user-surface .cu-mode-btn small {
  font-size: 0.66rem;
}

@media (max-width: 900px) {
  #user-surface .cu-shell:has(.cu-sidebar) {
    display: flex;
    flex-direction: column;
  }

  #user-surface .cu-main {
    order: 1;
  }

  #user-surface .cu-sidebar {
    order: 2;
  }

  #user-surface .cu-toolbar {
    align-items: flex-start;
  }

  #user-surface .cu-toolbar-group-work {
    flex: 1 1 100%;
  }

  #user-surface .cu-toolbar-menu {
    width: 100%;
    margin-left: 0;
  }

  #user-surface .cu-toolbar-menu-summary {
    width: 100%;
    justify-content: center;
  }

  #user-surface .cu-toolbar-menu .cu-toolbar-group-session {
    position: static;
    width: 100%;
    min-width: 0;
    margin-top: 8px;
  }
}

@media (max-width: 760px) {
  #user-surface .cu-mode-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  #user-surface .cu-composer-row {
    bottom: max(8px, env(safe-area-inset-bottom));
    box-shadow: 0 -14px 26px rgba(18, 23, 21, 0.28);
  }
}

@media (max-width: 760px) {
  #user-surface .cu-main {
    padding-bottom: 32px;
  }

  #user-surface .cu-composer-row {
    position: sticky;
    bottom: max(8px, env(safe-area-inset-bottom));
    max-height: none;
    overflow: visible;
    width: 100%;
    box-sizing: border-box;
  }

  #user-surface .cu-composer-row textarea.cu-question {
    min-height: 52px;
    max-height: 92px;
    resize: vertical;
  }

  #user-surface .cu-mode-panel {
    gap: 6px;
    padding: 8px;
  }

  #user-surface .cu-mode-panel-head {
    display: flex;
    align-items: center;
  }

  #user-surface .cu-mode-toggle {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  #user-surface .cu-mode-btn {
    min-height: 42px;
    padding: 7px 8px;
  }

  #user-surface .cu-mode-btn small {
    display: none;
  }

}

/* Phase104 live-tester answer readability: assistant-only safe Markdown render. */
#user-surface .cu-msg-system .cu-msg-body-rendered,
.cu-msg-system .cu-msg-body-rendered {
  white-space: normal;
  line-height: 1.72;
}

#user-surface .cu-msg-body-rendered p,
.cu-msg-body-rendered p {
  margin: 0 0 0.85rem;
}

#user-surface .cu-msg-body-rendered p:last-child,
.cu-msg-body-rendered p:last-child {
  margin-bottom: 0;
}

#user-surface .cu-msg-body-rendered h2,
#user-surface .cu-msg-body-rendered h3,
#user-surface .cu-msg-body-rendered h4,
.cu-msg-body-rendered h2,
.cu-msg-body-rendered h3,
.cu-msg-body-rendered h4 {
  margin: 1.15rem 0 0.55rem;
  font-size: 1rem;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--cu-v2-ink);
}

#user-surface .cu-msg-body-rendered h2:first-child,
#user-surface .cu-msg-body-rendered h3:first-child,
#user-surface .cu-msg-body-rendered h4:first-child,
.cu-msg-body-rendered h2:first-child,
.cu-msg-body-rendered h3:first-child,
.cu-msg-body-rendered h4:first-child {
  margin-top: 0;
}

#user-surface .cu-msg-body-rendered ul,
#user-surface .cu-msg-body-rendered ol,
.cu-msg-body-rendered ul,
.cu-msg-body-rendered ol {
  margin: 0.5rem 0 0.9rem;
  padding-left: 1.4rem;
}

#user-surface .cu-msg-body-rendered li,
.cu-msg-body-rendered li {
  margin: 0.25rem 0;
}

#user-surface .cu-msg-body-rendered code,
.cu-msg-body-rendered code {
  padding: 0.08rem 0.28rem;
  border-radius: 0.35rem;
  background: rgba(33, 87, 79, 0.12);
  font-size: 0.92em;
}

#user-surface .cu-md-table-wrap,
.cu-md-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  margin: 0.75rem 0 1rem;
  border: 1px solid rgba(18, 20, 18, 0.1);
  border-radius: 0.75rem;
}

#user-surface .cu-md-table,
.cu-md-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
  font-size: 0.92rem;
}

#user-surface .cu-md-table th,
#user-surface .cu-md-table td,
.cu-md-table th,
.cu-md-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid rgba(18, 20, 18, 0.08);
  text-align: left;
  vertical-align: top;
}

#user-surface .cu-md-table th,
.cu-md-table th {
  background: rgba(33, 87, 79, 0.09);
  font-weight: 800;
}

#user-surface .cu-md-table tr:last-child td,
.cu-md-table tr:last-child td {
  border-bottom: 0;
}

@media (max-width: 560px) {
  #user-surface .cu-md-table-wrap,
  .cu-md-table-wrap {
    overflow-x: visible;
    border: 0;
    border-radius: 0;
  }

  #user-surface .cu-md-table,
  .cu-md-table,
  #user-surface .cu-md-table tbody,
  .cu-md-table tbody,
  #user-surface .cu-md-table tr,
  .cu-md-table tr,
  #user-surface .cu-md-table td,
  .cu-md-table td {
    display: block;
    width: 100%;
    min-width: 0;
  }

  #user-surface .cu-md-table thead,
  .cu-md-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  #user-surface .cu-md-table tr,
  .cu-md-table tr {
    margin: 0 0 0.75rem;
    border: 1px solid rgba(18, 20, 18, 0.1);
    border-radius: 0.75rem;
    background: rgba(255, 255, 255, 0.26);
    overflow: hidden;
  }

  #user-surface .cu-md-table tr:last-child,
  .cu-md-table tr:last-child {
    margin-bottom: 0;
  }

  #user-surface .cu-md-table td,
  .cu-md-table td {
    display: grid;
    grid-template-columns: minmax(6.8rem, 38%) minmax(0, 1fr);
    gap: 0.65rem;
    border-bottom: 1px solid rgba(18, 20, 18, 0.08);
    overflow-wrap: anywhere;
  }

  #user-surface .cu-md-table td::before,
  .cu-md-table td::before {
    content: attr(data-label);
    color: #17433d;
    font-weight: 800;
    line-height: 1.35;
  }
}

@media (max-width: 430px) {
  #user-surface .cu-md-table td,
  .cu-md-table td {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

#user-surface .cu-empty-state.cu-empty-state-warning,
.cu-empty-state.cu-empty-state-warning {
  border-style: solid;
  border-color: rgba(138, 90, 18, 0.24);
  background: linear-gradient(135deg, rgba(253, 241, 217, 0.96), rgba(247, 238, 221, 0.9));
  color: #4b3718;
}

#user-surface .cu-empty-state.cu-empty-state-warning h3,
.cu-empty-state.cu-empty-state-warning h3 {
  color: #3a2a12;
}

#user-surface .cu-empty-state.cu-empty-state-warning p,
.cu-empty-state.cu-empty-state-warning p {
  color: #5f451c;
}

/* Late override: Phase 98 pending styles are defined after the base motion block. */
@media (prefers-reduced-motion: reduce) {
  #user-surface .cu-pending-orbit,
  #user-surface .cu-pending-card::after {
    animation: none !important;
  }

  #user-surface .cu-pending-card::after {
    opacity: 0.35;
    transform: none;
  }
}

/* Phase104 mobile conversation navigation: keep dialogue tabs discoverable. */
@media (max-width: 760px) {
  #user-surface .cu-shell:has(.cu-sidebar) {
    display: flex;
    flex-direction: column;
    min-width: 0;
    max-width: 100%;
  }

  #user-surface .cu-sidebar {
    order: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: static;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    max-height: none;
    overflow: hidden;
    padding: 10px;
  }

  #user-surface .cu-main {
    order: 2;
  }

  #user-surface .cu-sidebar-head {
    order: 1;
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: 0;
  }

  #user-surface .cu-conv-list {
    order: 2;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
    overflow-y: visible;
    margin-top: 0;
    padding-top: 0;
    padding-bottom: 4px;
    border-top: 0;
  }

  #user-surface .cu-conv-item {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-height: 54px;
  }

  #user-surface .cu-conv-item-row,
  #user-surface .cu-conv-item-foot,
  #user-surface .cu-conv-select {
    min-width: 0;
    max-width: 100%;
  }

  #user-surface .cu-conv-actions {
    flex: 0 1 auto;
    max-width: 100%;
  }

  #user-surface .cu-usage-meter {
    order: 3;
    margin-top: 0;
    padding: 10px;
  }
}

/* Phase104 human-first cabinet help: keep explanations available, not dominant. */
#user-surface .cu-cabinet-disclosure,
.cu-cabinet-disclosure {
  display: block;
  padding: 0;
  overflow: hidden;
}

#user-surface .cu-cabinet-summary,
.cu-cabinet-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 64px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

#user-surface .cu-cabinet-summary::-webkit-details-marker,
.cu-cabinet-summary::-webkit-details-marker {
  display: none;
}

#user-surface .cu-cabinet-summary .cu-cabinet-note-head,
.cu-cabinet-summary .cu-cabinet-note-head {
  display: grid;
  gap: 4px;
  min-width: 0;
}

#user-surface .cu-cabinet-summary .cu-cabinet-note-title,
.cu-cabinet-summary .cu-cabinet-note-title {
  display: block;
  margin: 0;
}

#user-surface .cu-cabinet-summary .cu-cabinet-note-body,
.cu-cabinet-summary .cu-cabinet-note-body {
  display: block;
  margin: 0;
  max-width: 76ch;
}

#user-surface .cu-cabinet-help-mark,
.cu-cabinet-help-mark {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(216, 208, 193, 0.38);
  background: rgba(216, 208, 193, 0.1);
  color: #f4efe4;
  font-weight: 800;
  line-height: 1;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

#user-surface .cu-cabinet-summary:hover .cu-cabinet-help-mark,
.cu-cabinet-summary:hover .cu-cabinet-help-mark,
#user-surface .cu-cabinet-summary:focus-visible .cu-cabinet-help-mark,
.cu-cabinet-summary:focus-visible .cu-cabinet-help-mark {
  border-color: rgba(216, 208, 193, 0.68);
  background: rgba(216, 208, 193, 0.18);
  transform: scale(1.04);
}

#user-surface .cu-cabinet-summary:focus-visible,
.cu-cabinet-summary:focus-visible {
  outline: 3px solid rgba(216, 208, 193, 0.38);
  outline-offset: -3px;
}

#user-surface .cu-cabinet-disclosure[open] .cu-cabinet-help-mark,
.cu-cabinet-disclosure[open] .cu-cabinet-help-mark {
  transform: rotate(45deg);
}

#user-surface .cu-cabinet-disclosure > .cu-cabinet-chip-row,
.cu-cabinet-disclosure > .cu-cabinet-chip-row,
#user-surface .cu-cabinet-disclosure > .cu-cabinet-grid,
.cu-cabinet-disclosure > .cu-cabinet-grid {
  margin: 0 16px 16px;
}

#user-surface .cu-cabinet-disclosure > .cu-cabinet-chip-row,
.cu-cabinet-disclosure > .cu-cabinet-chip-row {
  padding-top: 2px;
}

#user-surface .cu-cabinet-disclosure:not([open]) > .cu-cabinet-chip-row,
.cu-cabinet-disclosure:not([open]) > .cu-cabinet-chip-row,
#user-surface .cu-cabinet-disclosure:not([open]) > .cu-cabinet-grid,
.cu-cabinet-disclosure:not([open]) > .cu-cabinet-grid {
  display: none;
}

@media (max-width: 760px) {
  #user-surface .cu-cabinet-summary,
  .cu-cabinet-summary {
    min-height: 56px;
    padding: 12px;
    align-items: flex-start;
  }

  #user-surface .cu-cabinet-summary .cu-cabinet-note-body,
  .cu-cabinet-summary .cu-cabinet-note-body {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  #user-surface .cu-cabinet-disclosure > .cu-cabinet-grid,
  .cu-cabinet-disclosure > .cu-cabinet-grid {
    display: grid;
    grid-template-columns: 1fr;
  }

  #user-surface .cu-cabinet-disclosure:not([open]) > .cu-cabinet-grid,
  .cu-cabinet-disclosure:not([open]) > .cu-cabinet-grid {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  #user-surface .cu-cabinet-help-mark,
  .cu-cabinet-help-mark {
    transition: none;
  }
}

/* Phase104 mobile chat priority: dialogue first, management panels after it. */
@media (max-width: 760px) {
  #user-surface .cu-main {
    order: 1;
  }

  #user-surface .cu-sidebar {
    order: 2;
  }
}

/* Phase104 final human-first empty source override: no-source notes must not read as answer cards. */
#user-surface .cu-citations-empty {
  margin-top: 8px;
  padding: 8px 10px;
  border: 1px dashed rgba(122, 99, 69, 0.22);
  border-left: 1px dashed rgba(122, 99, 69, 0.22);
  border-radius: 10px;
  background: rgba(245, 238, 225, 0.18);
  box-shadow: none;
}

#user-surface .cu-citations-empty-title {
  font-size: 0.72rem;
  letter-spacing: 0.055em;
}

#user-surface .cu-citations-empty-body {
  margin-top: 3px;
  font-size: 0.8rem;
  line-height: 1.35;
}

#user-surface .cu-citations-empty.cu-citations-empty-clarifying,
#user-surface .cu-citations-empty.cu-citations-empty-insufficient,
#user-surface .cu-citations-empty.cu-citations-empty-error,
#user-surface .cu-citations-empty.cu-citations-empty-idle,
#user-surface .cu-citations-empty.cu-citations-empty-stale {
  background: rgba(245, 238, 225, 0.18);
}

/* Phase114 visual authority: responsive civic workspace and explicit themes. */
:root {
  /* customer_fonts.css supplies the cabinet's two owned faces. */
  --cu-v2-font-body: "Manrope", "Segoe UI Variable", "Segoe UI", sans-serif;
  --cu-v2-font-display: "Spectral", Georgia, serif;
  --cu-v2-canvas: #f3f0e9;
  --cu-v2-shell: #f8f6f0;
  --cu-v2-panel: #fffdf8;
  --cu-v2-panel-2: #f5f2ea;
  --cu-v2-panel-3: #ece9e0;
  --cu-v2-ink: #16211d;
  --cu-v2-muted: #66716b;
  --cu-v2-faint: #7c8680;
  --cu-v2-line: rgba(22, 33, 29, 0.12);
  --cu-v2-line-strong: rgba(22, 33, 29, 0.20);
  --cu-v2-accent: #1d6258;
  --cu-v2-accent-strong: #154a43;
  --cu-v2-accent-soft: #e5f0ed;
  --cu-v2-brass: #ad7442;
  --cu-v2-danger: #ad5743;
  --cu-v2-shadow: 0 22px 64px rgba(25, 38, 33, 0.10);
  --cu-v2-shadow-soft: 0 10px 30px rgba(25, 38, 33, 0.07);
}

html[data-theme="dark"] {
  --cu-v2-canvas: #0e1512;
  --cu-v2-shell: #121b18;
  --cu-v2-panel: #17211e;
  --cu-v2-panel-2: #1d2925;
  --cu-v2-panel-3: #24312c;
  --cu-v2-ink: #edf2ee;
  --cu-v2-muted: #a5b1ab;
  --cu-v2-faint: #87948e;
  --cu-v2-line: rgba(232, 240, 235, 0.12);
  --cu-v2-line-strong: rgba(232, 240, 235, 0.21);
  --cu-v2-accent: #68bfae;
  --cu-v2-accent-strong: #8bd2c4;
  --cu-v2-accent-soft: #1c3832;
  --cu-v2-brass: #d3a16b;
  --cu-v2-danger: #e1846e;
  --cu-v2-shadow: 0 26px 78px rgba(0, 0, 0, 0.34);
  --cu-v2-shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.22);
}

body.u2c-authenticated-preview {
  color: var(--cu-v2-ink);
  background: var(--cu-v2-canvas);
}

#user-surface .cu-shell,
#user-surface .cu-shell.cu-mock {
  width: 100%;
  max-width: none;
  min-width: 0;
  color: var(--cu-v2-ink);
  font-family: var(--cu-v2-font-body);
}

#user-surface .cu-shell:has(.cu-sidebar) {
  display: grid;
  box-sizing: border-box;
  align-items: stretch;
  grid-template-columns: 312px minmax(0, 1fr);
  grid-template-areas: "sidebar main";
  gap: 12px;
  min-height: calc(100svh - 36px);
  border: 1px solid var(--cu-v2-line);
  border-radius: 22px;
  padding: 12px;
  background: var(--cu-v2-shell);
  box-shadow: var(--cu-v2-shadow);
}

#user-surface .cu-main {
  grid-area: main;
  display: flex;
  box-sizing: border-box;
  min-width: 0;
  min-height: 0;
  height: calc(100svh - 62px);
  height: calc(100dvh - 62px);
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
  border: 1px solid var(--cu-v2-line);
  border-radius: 17px;
  padding: clamp(18px, 2.1vw, 30px);
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel);
  box-shadow: none;
}

#user-surface .cu-sidebar {
  grid-area: sidebar;
  position: relative;
  top: auto;
  bottom: auto;
  z-index: 2;
  display: flex;
  box-sizing: border-box;
  align-self: stretch;
  min-width: 0;
  max-height: calc(100svh - 62px);
  flex-direction: column;
  gap: 13px;
  overflow: hidden;
  border: 1px solid var(--cu-v2-line);
  border-radius: 17px;
  padding: 16px;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel-2);
  box-shadow: none;
}

#user-surface .cu-header {
  order: 0;
  display: flex;
  min-width: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin: 0;
  padding: 0 2px 9px;
  border-bottom: 1px solid var(--cu-v2-line);
}

#user-surface .cu-header-copy { min-width: 0; }
#user-surface .cu-header h2.cu-title {
  margin: 0;
  color: var(--cu-v2-ink);
  font-family: var(--cu-v2-font-display);
  font-size: clamp(1.2rem, 1.7vw, 1.55rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.025em;
}

#user-surface .cu-header p.cu-subtitle {
  max-width: 62ch;
  margin: 8px 0 0;
  color: var(--cu-v2-muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

#user-surface .cu-header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

#user-surface .cu-header-feedback-btn {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 7px 11px;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 42%, var(--cu-v2-line));
  border-radius: 999px;
  color: var(--cu-v2-accent-strong);
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 58%, var(--cu-v2-panel-2));
  box-shadow: 0 4px 14px color-mix(in srgb, var(--cu-v2-accent) 9%, transparent);
  font: 760 0.76rem/1 var(--cu-v2-font-body);
  white-space: nowrap;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

#user-surface .cu-header-feedback-btn:hover {
  border-color: color-mix(in srgb, var(--cu-v2-accent) 64%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 86%, var(--cu-v2-panel-2));
  box-shadow: 0 6px 16px color-mix(in srgb, var(--cu-v2-accent) 14%, transparent);
  transform: translateY(-1px);
}

#user-surface .cu-header-feedback-btn:active { transform: translateY(0); }

#user-surface .cu-header-feedback-btn:focus-visible {
  outline: 3px solid var(--cu-v2-accent);
  outline-offset: 2px;
}

#user-surface .cu-header-feedback-icon {
  width: 17px;
  height: 17px;
  flex: 0 0 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#user-surface .cu-header-feedback-short { display: none; }

#user-surface .cu-mode-current-pill { display: none; }

#user-surface .cu-sidebar-toggle {
  display: none;
  min-height: 42px;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--cu-v2-line-strong);
  border-radius: 999px;
  padding: 8px 13px;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-panel-2);
  font: 750 0.78rem/1 var(--cu-v2-font-body);
  cursor: pointer;
}

#user-surface .cu-sidebar-toggle-icon {
  position: relative;
  width: 16px;
  height: 12px;
  border-block: 2px solid currentColor;
}

#user-surface .cu-sidebar-toggle-icon::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 0;
  width: 16px;
  border-top: 2px solid currentColor;
}

#user-surface .cu-thread-region {
  display: block;
  min-width: 0;
  min-height: 0;
  flex: 1 1 auto;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--cu-v2-line);
  border-radius: 16px;
  padding: clamp(14px, 2vw, 22px);
  color: var(--cu-v2-ink);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--cu-v2-panel) 98%, var(--cu-v2-accent-soft)), var(--cu-v2-panel));
  box-shadow: none;
  scrollbar-color: var(--cu-v2-line-strong) transparent;
}

#user-surface .cu-thread-region:has(.cu-empty-state) {
  display: grid;
  place-items: center;
}

#user-surface .cu-empty-state {
  width: min(100%, 760px);
  min-height: 290px;
  margin: 0 auto;
  border: 1px dashed var(--cu-v2-line-strong);
  border-radius: 15px;
  padding: clamp(28px, 5vw, 54px);
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel-2);
  text-align: center;
}

#user-surface .cu-empty-state h3,
#user-surface .cu-empty-title {
  margin-top: 0;
  color: var(--cu-v2-ink);
  font-family: var(--cu-v2-font-display);
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

#user-surface .cu-empty-state p {
  max-width: 62ch;
  margin-inline: auto;
  color: var(--cu-v2-muted);
  line-height: 1.55;
}

#user-surface .cu-empty-prompts,
#user-surface .cu-empty-state .cu-empty-suggestions {
  display: grid;
  width: min(100%, 460px);
  gap: 7px;
  margin: 20px auto 0;
  padding: 0;
}

#user-surface .cu-empty-prompts li,
#user-surface .cu-empty-state .cu-empty-suggestions button {
  min-height: 42px;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 25%, transparent);
  border-radius: 9px;
  padding: 9px 14px;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-accent-soft);
}

#user-surface .cu-composer-row {
  position: sticky;
  bottom: 0;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "mode mode"
    "question question"
    "policy policy"
    "actions actions";
  gap: 8px;
  border: 1px solid var(--cu-v2-line-strong);
  border-radius: 16px;
  padding: 12px;
  color: var(--cu-v2-ink);
  background: color-mix(in srgb, var(--cu-v2-panel) 96%, transparent);
  box-shadow: var(--cu-v2-shadow-soft);
  backdrop-filter: blur(14px);
  transform: none;
}

#user-surface .cu-chat-workspace {
  order: 1;
  display: flex;
  min-height: 0;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 10px;
}

#user-surface .cu-toolbar {
  flex: 0 0 auto;
}

#user-surface .cu-composer-row textarea.cu-question {
  grid-area: question;
  width: 100%;
  min-height: 52px;
  max-height: 180px;
  margin: 0;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 12px 14px;
  resize: none;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel-2);
  font: 500 1rem/1.5 var(--cu-v2-font-body);
}

#user-surface .cu-obsolete-search-option {
  grid-area: policy;
  display: flex;
  align-items: flex-start;
  gap: 9px;
  min-height: 40px;
  padding: 2px 4px;
  color: var(--cu-v2-muted);
  font-size: 0.84rem;
  line-height: 1.4;
  cursor: pointer;
}

#user-surface .cu-obsolete-search-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#user-surface .cu-obsolete-search-copy small {
  color: var(--cu-v2-faint);
  font-size: 0.72rem;
  line-height: 1.35;
}

#user-surface .cu-obsolete-search-option input {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin: 1px 0 0;
  accent-color: var(--cu-v2-accent-strong);
}

#user-surface .cu-obsolete-search-option:focus-within {
  outline: 2px solid var(--cu-v2-accent-strong);
  outline-offset: 2px;
  border-radius: 6px;
}

#user-surface .cu-composer-row textarea.cu-question::placeholder { color: var(--cu-v2-faint); }
#user-surface .cu-composer-row textarea.cu-question:focus {
  outline: 3px solid color-mix(in srgb, var(--cu-v2-accent) 18%, transparent);
  border-color: var(--cu-v2-accent);
}

#user-surface .cu-composer-actions {
  grid-area: actions;
  display: flex;
  min-width: 132px;
  flex-direction: column;
  justify-content: flex-start;
  gap: 7px;
}

#user-surface .cu-send,
#user-surface .cu-btn-new-conv,
#user-surface .cu-btn-primary {
  border: 1px solid transparent;
  border-radius: 11px;
  color: #fff;
  background: #1d6258;
  box-shadow: 0 10px 24px rgba(29, 98, 88, 0.18);
}

#user-surface .cu-send {
  min-height: 48px;
  padding-inline: 20px;
  font-weight: 780;
}

#user-surface .cu-send:hover,
#user-surface .cu-btn-new-conv:hover,
#user-surface .cu-btn-primary:hover { background: #154a43; }

#user-surface .cu-status-line {
  min-height: 1.2em;
  color: var(--cu-v2-muted);
  font-size: 0.76rem;
  line-height: 1.35;
}

#user-surface .cu-mode-panel {
  grid-area: mode;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 0;
  border-radius: 11px;
  padding: 8px 9px;
  color: var(--cu-v2-muted);
  background: var(--cu-v2-panel-3);
}

#user-surface .cu-mode-panel-head {
  display: flex;
  min-width: fit-content;
  align-items: center;
  gap: 8px;
  padding: 0 3px;
}

#user-surface .cu-mode-title { display: inline-flex; align-items: center; gap: 7px; }
#user-surface .cu-mode-panel .cu-mode-label {
  color: var(--cu-v2-muted);
  font-size: 0.69rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
#user-surface .cu-mode-badge { display: none; }

#user-surface .cu-mode-toggle {
  display: grid;
  width: min(100%, 690px);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--cu-v2-line);
  border-radius: 10px;
  padding: 3px;
  background: var(--cu-v2-panel-2);
}

#user-surface .cu-mode-btn {
  min-height: 42px;
  border: 0;
  border-radius: 7px;
  padding: 6px 12px;
  color: var(--cu-v2-muted);
  background: color-mix(in srgb, var(--cu-v2-panel-2) 72%, transparent);
  text-align: center;
}

#user-surface .cu-mode-btn strong { color: inherit; }
#user-surface .cu-mode-btn small { color: inherit; opacity: 0.78; }
#user-surface .cu-mode-btn:disabled,
#user-surface .cu-mode-btn.cu-mode-unavailable {
  color: var(--cu-v2-muted);
  opacity: 1;
  background: color-mix(in srgb, var(--cu-v2-panel-3) 54%, transparent);
  cursor: not-allowed;
}
#user-surface .cu-mode-btn.cu-active,
#user-surface .cu-mode-btn[aria-pressed="true"] {
  color: #fff;
  background: #1d6258;
  box-shadow: 0 4px 14px rgba(29, 98, 88, 0.18);
}
#user-surface .cu-mode-btn.cu-active strong,
#user-surface .cu-mode-btn[aria-pressed="true"] strong { color: #fff; }
#user-surface .cu-mode-btn.cu-active.cu-mode-unavailable {
  color: var(--cu-v2-muted);
  outline: 1px dashed var(--cu-v2-line-strong);
  outline-offset: -2px;
  background: var(--cu-v2-panel-3);
  box-shadow: none;
}
#user-surface .cu-mode-btn.cu-active.cu-mode-unavailable strong { color: var(--cu-v2-muted); }

#user-surface .cu-cabinet-help-mark {
  color: var(--cu-v2-accent-strong);
  border-color: var(--cu-v2-line);
  background: var(--cu-v2-panel-2);
}

#user-surface .cu-toolbar {
  order: 3;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0;
  padding: 0 2px;
  border: 0;
  background: transparent;
}

#user-surface .cu-toolbar-group-work {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

#user-surface .cu-toolbar .cu-tool-btn,
#user-surface .cu-toolbar .cu-lang-static,
#user-surface .cu-toolbar-menu-summary {
  min-height: 40px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 10px;
  padding: 8px 12px;
  color: var(--cu-v2-muted);
  background: var(--cu-v2-panel-2);
  box-shadow: none;
}

#user-surface .cu-toolbar .cu-tool-btn:hover,
#user-surface .cu-toolbar-menu-summary:hover {
  color: var(--cu-v2-accent-strong);
  border-color: color-mix(in srgb, var(--cu-v2-accent) 30%, transparent);
  background: var(--cu-v2-accent-soft);
}

#user-surface .cu-toolbar-menu { position: relative; margin-left: auto; }
#user-surface .cu-toolbar-menu .cu-toolbar-group-session {
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  z-index: 20;
  min-width: 240px;
  border: 1px solid var(--cu-v2-line-strong);
  border-radius: 13px;
  padding: 8px;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel);
  box-shadow: var(--cu-v2-shadow);
}

#user-surface .cu-cabinet-note {
  order: 4;
  margin: 0;
  border: 1px solid var(--cu-v2-line);
  border-radius: 13px;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel);
  box-shadow: none;
}

#user-surface .cu-sidebar-help {
  order: initial;
  flex: 0 0 auto;
  max-height: min(42svh, 430px);
  overflow-y: auto;
  background: var(--cu-v2-panel);
}

#user-surface .cu-sidebar-help .cu-cabinet-summary {
  position: sticky;
  z-index: 1;
  top: 0;
  min-height: 48px;
  padding: 9px 11px;
  background: var(--cu-v2-panel);
}

#user-surface .cu-sidebar-help .cu-cabinet-note-title,
#user-surface .cu-sidebar-help .cu-cabinet-card-title { color: var(--cu-v2-ink); }
#user-surface .cu-sidebar-help .cu-cabinet-note-body,
#user-surface .cu-sidebar-help .cu-cabinet-card-body { color: var(--cu-v2-muted); }
#user-surface .cu-sidebar-help .cu-cabinet-grid {
  grid-template-columns: 1fr;
  gap: 7px;
  padding: 8px;
}
#user-surface .cu-sidebar-help .cu-cabinet-card { padding: 10px; }

#user-surface .cu-cabinet-summary {
  min-height: 56px;
  padding: 12px 15px;
}

#user-surface .cu-cabinet-note-title,
#user-surface .cu-cabinet-card-title { color: var(--cu-v2-ink); }
#user-surface .cu-cabinet-note-body,
#user-surface .cu-cabinet-card-body { color: var(--cu-v2-muted); }
#user-surface .cu-cabinet-grid { border-top-color: var(--cu-v2-line); }
#user-surface .cu-cabinet-card {
  color: var(--cu-v2-ink);
  border-color: var(--cu-v2-line);
  background: var(--cu-v2-panel-2);
}

#user-surface .cu-sidebar-head { margin: 0; }
#user-surface .cu-btn-new-conv { width: 100%; min-height: 44px; font-weight: 780; }

#user-surface .cu-conv-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--cu-v2-line);
  border-radius: 999px;
  padding: 3px;
  background: var(--cu-v2-panel-3);
}

#user-surface .cu-conv-tab {
  min-height: 38px;
  border: 0;
  border-radius: 999px;
  color: var(--cu-v2-muted);
  background: transparent;
}

#user-surface .cu-conv-tab.cu-active {
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-panel);
  box-shadow: 0 3px 12px rgba(25, 38, 33, 0.08);
}

#user-surface .cu-folder-panel {
  border-bottom: 1px solid var(--cu-v2-line);
  padding-bottom: 10px;
}
#user-surface .cu-folder-panel-head,
#user-surface .cu-folder-label { color: var(--cu-v2-muted); }
#user-surface .cu-folder-add,
#user-surface .cu-folder-chip {
  color: var(--cu-v2-muted);
  border-color: var(--cu-v2-line);
  background: var(--cu-v2-panel);
}
#user-surface .cu-folder-chip.cu-active {
  color: var(--cu-v2-accent-strong);
  border-color: color-mix(in srgb, var(--cu-v2-accent) 32%, transparent);
  background: var(--cu-v2-accent-soft);
}
#user-surface .cu-folder-count { color: var(--cu-v2-accent-strong); background: var(--cu-v2-panel-3); }

#user-surface .cu-usage-meter {
  border: 1px solid var(--cu-v2-line);
  border-radius: 12px;
  padding: 11px 12px;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel);
}
#user-surface .cu-meter-label,
#user-surface .cu-meter-foot,
#user-surface .cu-meter-note { color: var(--cu-v2-muted); }
#user-surface .cu-meter-counts,
#user-surface .cu-meter-storage-grid strong { color: var(--cu-v2-ink); }
#user-surface .cu-meter-bar { background: var(--cu-v2-panel-3); }
#user-surface .cu-meter-bar-fill { background: var(--cu-v2-accent); }

#user-surface .cu-conv-list {
  min-height: 0;
  flex: 1 1 auto;
  /* Grid's automatic minimum track can otherwise resolve from the compact
     action strip rather than the title, folder, and date.  Rows own their
     intrinsic block size; the list, not the rows, owns overflow. */
  grid-auto-rows: max-content;
  align-content: start;
  overflow-y: auto;
  padding: 2px 1px;
  scrollbar-color: var(--cu-v2-line-strong) transparent;
}

/* At a native 200% desktop zoom the open drawer can be shorter than its
   controls. Preserve every control and conversation as one reachable rail
   instead of squeezing the list into unusable tracks. */
@media (min-width: 521px) and (max-width: 1179px) and (max-height: 560px) {
  #user-surface .cu-sidebar {
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  #user-surface .cu-conv-list {
    flex: 0 0 auto;
    overflow: visible;
  }
}

#user-surface .cu-conv-item {
  display: grid;
  --cu-v2-conv-action-strip: 108px;
  grid-template-columns: minmax(0, 1fr) var(--cu-v2-conv-action-strip);
  align-items: start;
  column-gap: 8px;
  /* A date (and an optional folder) is real row content, not an overlay.
     Let the grid's intrinsic content size win over the compact-row minimum so
     any two-line title remains wholly inside the inherited clipping boundary. */
  min-height: max-content;
  padding: 11px 12px;
  /* The list needs a quiet rhythm before hover, without competing with the
     selected-state accent. */
  border: 1px solid var(--cu-v2-line);
  border-radius: 12px;
  color: var(--cu-v2-ink);
  background: transparent;
}
#user-surface .cu-conv-item:hover { border-color: var(--cu-v2-line); background: var(--cu-v2-panel); }
#user-surface .cu-conv-item.cu-active {
  border-color: color-mix(in srgb, var(--cu-v2-accent) 42%, transparent);
  background: var(--cu-v2-accent-soft);
}
#user-surface .cu-conv-item-title {
  display: -webkit-box;
  overflow: hidden;
  color: var(--cu-v2-ink);
  font-size: 0.91rem;
  font-weight: 680;
  line-height: 1.34;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
#user-surface .cu-conv-select {
  /* The action strip is a sibling column, not an overlay. Selection therefore
     never changes the title or date column's available width. */
  grid-column: 1;
  align-self: start;
  height: auto;
  min-height: max-content;
  min-width: 0;
  padding-right: 0;
}
#user-surface .cu-conv-item-meta,
#user-surface .cu-conv-item-foot {
  color: var(--cu-v2-muted);
  font-size: 0.76rem;
  line-height: 1.4;
}
#user-surface .cu-conv-item-foot {
  min-width: 0;
  margin-top: 6px;
}
#user-surface .cu-conv-folder-badge {
  color: var(--cu-v2-accent-strong);
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 38%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 72%, var(--cu-v2-panel));
}
#user-surface .cu-conv-empty {
  padding: 12px 4px;
  border: 0;
  color: var(--cu-v2-muted);
  background: transparent;
  font-size: 0.84rem;
  line-height: 1.5;
}
#user-surface .cu-conv-action {
  width: 32px;
  min-width: 32px;
  max-width: 32px;
  height: 32px;
  min-height: 32px;
  color: var(--cu-v2-muted);
  border-color: var(--cu-v2-line);
  background: var(--cu-v2-panel);
}
#user-surface .cu-conv-actions {
  position: relative;
  grid-column: 2;
  grid-row: 1;
  z-index: 3;
  width: var(--cu-v2-conv-action-strip);
  box-sizing: border-box;
  flex: 0 0 var(--cu-v2-conv-action-strip);
  max-width: none;
  justify-content: space-between;
  gap: 3px;
  padding: 2px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 999px;
  opacity: 0;
  background: var(--cu-v2-panel);
  box-shadow: var(--cu-v2-shadow-soft);
  pointer-events: none;
  transition: opacity 140ms ease;
}
#user-surface .cu-conv-item:hover .cu-conv-actions,
#user-surface .cu-conv-item:focus-within .cu-conv-actions,
#user-surface .cu-conv-item.cu-active .cu-conv-actions {
  opacity: 1;
  pointer-events: auto;
}

/* A precise, calm current-row marker: it does not consume title width or move
   the list when selection changes. The warm accent appears only in dark mode. */
html[data-theme="dark"] #user-surface .cu-conv-item.cu-active::before {
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 0;
  width: 2px;
  border-radius: 999px;
  background: var(--cu-v2-brass);
  content: "";
}

/* Hover-only controls are undiscoverable on touch. Keep the same controls and
   ownership, but expose the compact strip where a hover affordance is absent. */
@media (hover: none), (pointer: coarse) {
  #user-surface .cu-conv-actions {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 520px) {
  /* Keep a real title column at phone width; the status can use its own line. */
  #user-surface .cu-conv-item-row { display: block; }
  #user-surface .cu-conv-research-badge { margin-top: 4px; }
}

/* The older research badge palette was authored for the dark shell and leaked
   through the final light cascade. Keep its status semantic, but bind its
   foreground/background to the actual theme tokens so it remains readable on
   the selected mint row as well. */
html[data-theme="light"] #user-surface .cu-conv-research-badge-in_progress,
html[data-theme="light"] #user-surface .cu-conv-research-badge-completed {
  color: #0b4f42;
  border-color: #5aa990;
  background: #d9f4e8;
}
html[data-theme="light"] #user-surface .cu-conv-research-badge-stale {
  color: #62400d;
  border-color: #ba8b42;
  background: #fff1d8;
}
html[data-theme="light"] #user-surface :is(.cu-conv-research-badge-failed, .cu-conv-research-badge-cancelled) {
  color: #7a2f12;
  border-color: #c98468;
  background: #ffeadf;
}
html[data-theme="dark"] #user-surface .cu-conv-research-badge-in_progress,
html[data-theme="dark"] #user-surface .cu-conv-research-badge-completed {
  color: #d9fff2;
  border-color: rgba(93, 211, 176, 0.5);
  background: rgba(49, 133, 109, 0.38);
}
html[data-theme="dark"] #user-surface .cu-conv-research-badge-stale {
  color: #fff0cf;
  border-color: rgba(214, 168, 98, 0.55);
  background: rgba(126, 86, 34, 0.42);
}
html[data-theme="dark"] #user-surface :is(.cu-conv-research-badge-failed, .cu-conv-research-badge-cancelled) {
  color: #ffe4d8;
  border-color: rgba(218, 126, 93, 0.58);
  background: rgba(123, 57, 36, 0.46);
}

/* On touch, the compact SVG strip has a visible group label. The title and
   date keep their existing columns; this only uses the strip's unused top
   rhythm rather than widening it or introducing a second action menu. */
@media (hover: none), (pointer: coarse) {
  #user-surface .cu-conv-actions::before {
    position: absolute;
    top: -11px;
    right: 0;
    left: 0;
    color: var(--cu-v2-muted);
    content: attr(data-touch-label);
    font-size: 0.58rem;
    font-weight: 760;
    letter-spacing: 0.055em;
    line-height: 1;
    text-align: center;
    text-transform: uppercase;
  }
}

#user-surface .cu-msg,
#user-surface .cu-pending-card,
#user-surface .cu-doc-panel,
#user-surface .cu-citation,
#user-surface .cu-citations,
#user-surface .cu-citations-empty {
  color: var(--cu-v2-ink);
  border-color: var(--cu-v2-line);
  background: var(--cu-v2-panel);
  box-shadow: none;
}

#user-surface .cu-msg-user {
  margin-left: clamp(18px, 8vw, 110px);
  border: 0;
  background: transparent;
}
#user-surface .cu-msg-system {
  margin-right: clamp(0px, 3vw, 36px);
  border: 0;
  background: transparent;
}
#user-surface .cu-assistant-response {
  width: min(90%, 860px);
  overflow: visible;
  border: 1px solid var(--cu-v2-line);
  border-radius: 14px;
  padding: 16px;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel-2);
}
#user-surface .cu-msg-user .cu-msg-head { justify-content: flex-end; }
#user-surface .cu-msg-user .cu-msg-body {
  align-self: flex-end;
  width: fit-content;
  max-width: min(78%, 760px);
}
#user-surface .cu-msg-system .cu-msg-body,
#user-surface .cu-msg-system .cu-msg-body-rendered {
  max-width: min(86%, 820px);
  color: var(--cu-v2-ink);
  border-color: var(--cu-v2-line);
  background: var(--cu-v2-panel-2);
}
#user-surface .cu-assistant-response .cu-msg-body,
#user-surface .cu-assistant-response .cu-msg-body-rendered {
  width: 100%;
  max-width: none;
  border: 0;
  border-radius: 0;
  padding: 0;
  background: transparent;
}
#user-surface .cu-msg-user .cu-msg-body {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.12);
  background: #1d6258;
}
#user-surface .cu-simple-mode-note {
  margin: 10px 0 0;
  border-color: color-mix(in srgb, var(--cu-v2-accent) 36%, var(--cu-v2-line));
  background: var(--cu-v2-panel-3);
  color: var(--cu-v2-ink);
}
#user-surface .cu-simple-mode-note strong { color: var(--cu-v2-accent-strong); }
#user-surface .cu-simple-mode-note span { color: var(--cu-v2-muted); }
#user-surface .cu-simple-mode-note-advanced {
  border-color: color-mix(in srgb, var(--cu-v2-brass) 48%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-brass) 13%, var(--cu-v2-panel-2));
}
#user-surface .cu-simple-mode-note-advanced strong { color: var(--cu-v2-brass); }
#user-surface .cu-citations {
  color: var(--cu-v2-ink);
  border-color: color-mix(in srgb, var(--cu-v2-brass) 48%, var(--cu-v2-line));
  border-left-color: var(--cu-v2-brass);
  background: color-mix(in srgb, var(--cu-v2-brass) 7%, var(--cu-v2-panel));
}
#user-surface .cu-citations:not(.cu-citations-empty) {
  margin-top: 14px;
  overflow: clip;
  border-left: 3px solid var(--cu-v2-brass);
  border-radius: 12px;
  padding: 0;
}
#user-surface .cu-citations-summary {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  color: var(--cu-v2-ink);
  background: color-mix(in srgb, var(--cu-v2-brass) 11%, transparent);
}
#user-surface .cu-citations-head {
  font-weight: 850;
  letter-spacing: 0.015em;
}
#user-surface .cu-citations-count {
  display: inline-grid;
  min-width: 22px;
  min-height: 22px;
  place-items: center;
  border-radius: 999px;
  padding-inline: 6px;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-accent-soft);
  font-size: 0.74rem;
  font-weight: 800;
}
#user-surface .cu-citations-more {
  border-top: 1px solid var(--cu-v2-line);
  padding: 9px 12px 12px;
}
#user-surface .cu-citations-more > summary {
  display: flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  list-style: none;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 44%, var(--cu-v2-line));
  border-radius: 9px;
  padding: 8px 12px;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-accent-soft);
  font-size: 0.8rem;
  font-weight: 780;
}
#user-surface .cu-citations-more-count {
  border-radius: 999px;
  padding: 3px 7px;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel);
  font-size: 0.72rem;
  font-weight: 780;
}
#user-surface .cu-citations-more > summary::-webkit-details-marker { display: none; }
#user-surface .cu-citations-more > summary::after { content: "+"; }
#user-surface .cu-citations-more[open] > summary::after { content: "−"; }
#user-surface .cu-citations-more > summary:hover { background: var(--cu-v2-accent-soft); }
#user-surface .cu-citations-more > summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--cu-v2-accent) 50%, transparent);
  outline-offset: -3px;
}
#user-surface .cu-citations-rest { margin-top: 8px; padding: 0; }
#user-surface .cu-citations-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0 12px 10px;
  list-style: none;
}
#user-surface .cu-citations-list .cu-citation {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 10px;
  margin: 0;
  border: 0;
  border-top: 1px solid var(--cu-v2-line);
  border-radius: 0;
  padding: 10px 0;
  background: transparent;
}
#user-surface .cu-citations-list .cu-citation-src {
  display: -webkit-box;
  min-width: 0;
  overflow: hidden;
  font-size: 0.88rem;
  font-weight: 720;
  line-height: 1.35;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
#user-surface .cu-citations-list .cu-citation-meta {
  grid-column: 1;
  margin: 0;
  font-size: 0.76rem;
}
#user-surface .cu-citations-list .cu-citation-snip {
  grid-column: 1 / -1;
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--cu-v2-muted);
  font-size: 0.82rem;
  line-height: 1.45;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
#user-surface .cu-citations-list .cu-citation-link {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  min-height: 34px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 9px;
  padding: 8px 10px;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-panel);
  font-size: 0.76rem;
  font-weight: 760;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}
#user-surface .cu-citations-list .cu-citation-link:hover,
#user-surface .cu-citations-list .cu-citation-link:focus-visible {
  border-color: var(--cu-v2-accent);
  background: var(--cu-v2-accent-soft);
}
#user-surface .cu-citations-empty {
  color: var(--cu-v2-muted);
  background: var(--cu-v2-panel-2);
}
#user-surface .cu-citations-empty-body {
  color: var(--cu-v2-muted);
  opacity: 1;
}
#user-surface .cu-msg-head,
#user-surface .cu-msg-role,
#user-surface .cu-job-meta,
#user-surface .cu-citation-meta,
#user-surface .cu-citation-snip { color: var(--cu-v2-muted); }
#user-surface .cu-citations-head,
#user-surface .cu-citation-src,
#user-surface .cu-citations-empty-title { color: var(--cu-v2-ink); }
#user-surface .cu-citation-link,
#user-surface .cu-card-links a { color: var(--cu-v2-accent-strong); }
#user-surface .cu-msg-feedback-btn {
  color: var(--cu-v2-muted);
  border-color: var(--cu-v2-line);
  background: var(--cu-v2-panel-2);
}
#user-surface .cu-msg-feedback-btn.cu-msg-feedback-active {
  color: var(--cu-v2-accent-strong);
  border-color: var(--cu-v2-accent);
  background: var(--cu-v2-accent-soft);
}

/* Per-answer copy stays beside feedback, with its own comfortable touch target. */
#user-surface .cu-msg-actions {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
}

#user-surface .cu-msg-actions .cu-msg-feedback {
  display: inline-flex;
  width: fit-content;
  min-height: 36px;
  align-items: center;
  gap: 4px;
  margin: 0;
}

#user-surface .cu-msg-copy-btn {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 5px;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 42%, var(--cu-v2-line));
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--cu-v2-accent-strong);
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 72%, var(--cu-v2-panel));
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 760;
  line-height: 1;
  white-space: nowrap;
  transition: color var(--cu-motion-fast) var(--cu-motion-ease-out), border-color var(--cu-motion-fast) var(--cu-motion-ease-out), background-color var(--cu-motion-fast) var(--cu-motion-ease-out), transform var(--cu-motion-fast) var(--cu-motion-ease-out);
}

#user-surface .cu-msg-copy-btn svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.35;
}

@media (hover: hover) and (pointer: fine) {
  #user-surface .cu-msg-copy-btn:hover:not(:disabled) {
    color: var(--cu-v2-accent-strong);
    border-color: color-mix(in srgb, var(--cu-v2-accent) 58%, var(--cu-v2-line));
    background: color-mix(in srgb, var(--cu-v2-accent-soft) 88%, var(--cu-v2-panel));
  }
}

#user-surface .cu-msg-copy-btn:active:not(:disabled) { transform: scale(0.975); }
#user-surface .cu-msg-copy-btn:focus-visible { outline: 2px solid var(--cu-v2-accent); outline-offset: 2px; }
#user-surface .cu-msg-copy-btn:disabled { cursor: wait; opacity: 0.68; }
#user-surface .cu-md-table-wrap { border-color: var(--cu-v2-line); }
#user-surface .cu-md-table th { color: var(--cu-v2-ink); background: var(--cu-v2-panel-3); }
#user-surface .cu-md-table td,
#user-surface .cu-md-table th { border-color: var(--cu-v2-line); }

#user-surface .cu-sidebar-backdrop {
  display: none;
  border: 0;
  background: rgba(8, 15, 12, 0.48);
  cursor: default;
}

#user-surface .cu-mock-banner {
  order: -1;
  color: var(--cu-v2-ink);
  border-color: color-mix(in srgb, var(--cu-v2-brass) 34%, transparent);
  background: color-mix(in srgb, var(--cu-v2-brass) 10%, var(--cu-v2-panel));
}

#user-surface .cu-mock-banner-tag {
  color: var(--cu-v2-ink);
  background: color-mix(in srgb, var(--cu-v2-brass) 22%, transparent);
}

#user-surface .cu-shell.cu-shell-login-gate {
  display: block;
  min-height: 0;
  border: 0;
  padding: 0;
  color: var(--cu-v2-ink);
  background: transparent;
  box-shadow: none;
}

#user-surface .cu-shell.cu-shell-login-gate .cu-login-gate {
  min-height: 0;
  padding: 0;
}

#user-surface .cu-shell.cu-shell-login-gate .cu-login-gate-card {
  width: 100%;
  max-width: 460px;
  border: 1px solid var(--cu-v2-line);
  border-top: 3px solid var(--cu-v2-brass);
  border-radius: 20px;
  padding: clamp(28px, 4vw, 40px);
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel);
  box-shadow: var(--cu-v2-shadow);
}

#user-surface .cu-login-gate-title {
  color: var(--cu-v2-ink);
  font-family: var(--cu-v2-font-display);
  font-size: clamp(2rem, 4vw, 2.7rem);
  letter-spacing: -0.035em;
}
#user-surface .cu-login-gate-body { color: var(--cu-v2-muted); }
#user-surface .cu-btn-secondary {
  color: var(--cu-v2-accent-strong);
  border-color: var(--cu-v2-line-strong);
  background: var(--cu-v2-panel-2);
}

@media (max-width: 1179px) {
  #user-surface .cu-shell:has(.cu-sidebar) {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "main";
    min-height: calc(100svh - 28px);
  }

  #user-surface .cu-main {
    min-height: 0;
    height: calc(100svh - 54px);
    height: calc(100dvh - 54px);
  }
  #user-surface .cu-sidebar-toggle { display: inline-flex; }

  #user-surface .cu-sidebar {
    position: fixed;
    z-index: 1002;
    top: 12px;
    bottom: 12px;
    left: 12px;
    width: min(340px, calc(100vw - 32px));
    height: calc(100svh - 24px);
    max-height: none;
    padding: 16px;
    box-shadow: var(--cu-v2-shadow);
    transform: translateX(calc(-100% - 28px));
    visibility: hidden;
    transition: transform 220ms cubic-bezier(.2, .8, .2, 1), visibility 220ms step-end;
  }

  #user-surface .cu-sidebar-backdrop {
    position: fixed;
    z-index: 1001;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
  }

  #user-surface .cu-shell.cu-sidebar-open .cu-sidebar {
    visibility: visible;
    transform: translateX(0);
    transition: transform 220ms cubic-bezier(.2, .8, .2, 1), visibility 0s step-start;
  }

  #user-surface .cu-shell.cu-sidebar-open .cu-sidebar-backdrop {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 760px) {
  #user-surface .cu-shell:has(.cu-sidebar) {
    gap: 0;
    min-height: calc(100svh - 12px);
    border-radius: 17px;
    padding: 6px;
  }

  #user-surface .cu-main {
    min-height: 0;
    height: calc(100svh - 24px);
    height: calc(100dvh - 24px);
    gap: 10px;
    border-radius: 13px;
    padding: 14px;
  }

  #user-surface .cu-header {
    align-items: center;
    gap: 12px;
    padding-bottom: 11px;
  }

  #user-surface .cu-header h2.cu-title { font-size: 1.2rem; }
  #user-surface .cu-header p.cu-subtitle { margin-top: 5px; font-size: 0.86rem; }
  #user-surface .cu-header-actions { gap: 6px; }
  #user-surface .cu-header-feedback-btn { padding-inline: 9px; }
  #user-surface .cu-header-feedback-label { display: none; }
  #user-surface .cu-header-feedback-short { display: inline; }
  #user-surface .cu-sidebar-toggle {
    min-width: 42px;
    width: 42px;
    padding: 0;
    justify-content: center;
  }
  #user-surface .cu-sidebar-toggle > span:last-child { display: none; }

  #user-surface .cu-thread-region {
    min-height: 0;
    flex-basis: 0;
    border-radius: 13px;
    padding: 10px;
  }

  #user-surface .cu-thread-region:has(.cu-empty-state) {
    min-height: 330px;
    flex: 0 0 auto;
  }

  #user-surface .cu-empty-state {
    min-height: 0;
    border-radius: 12px;
    padding: 26px 14px;
  }
  #user-surface .cu-empty-state p { font-size: 0.92rem; }
  #user-surface .cu-empty-prompts,
  #user-surface .cu-empty-state .cu-empty-suggestions { margin-top: 14px; }

  #user-surface .cu-composer-row {
    grid-template-columns: 1fr;
    grid-template-areas:
      "mode"
      "question"
      "policy"
      "actions";
    border-radius: 13px;
    gap: 6px;
    padding: 7px;
  }

  #user-surface .cu-composer-row textarea.cu-question {
    min-height: 50px;
    max-height: min(150px, 30vh);
    padding: 10px 12px;
  }
  #user-surface .cu-composer-actions { min-width: 0; gap: 4px; }
  #user-surface .cu-send { min-height: 42px; width: 100%; }

  #user-surface .cu-mode-panel {
    align-items: center;
    flex-direction: row;
    gap: 6px;
    padding: 6px;
  }
  #user-surface .cu-mode-panel-head { flex: 0 0 auto; justify-content: space-between; }
  #user-surface .cu-mode-panel .cu-mode-label { display: none; }
  #user-surface .cu-mode-toggle { width: auto; min-width: 0; flex: 1 1 auto; }
  #user-surface .cu-mode-btn { min-height: 36px; padding: 5px 7px; }
  #user-surface .cu-mode-btn small { display: none; }

  #user-surface .cu-toolbar {
    align-items: center;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
  }
  #user-surface .cu-toolbar::-webkit-scrollbar { display: none; }
  #user-surface .cu-toolbar-group-work {
    flex: 0 0 auto;
    flex-wrap: nowrap;
  }
  #user-surface .cu-toolbar .cu-tool-btn { min-height: 36px; width: auto; white-space: nowrap; }
  #user-surface .cu-toolbar-menu { flex: 0 0 auto; width: auto; margin: 0; }
  #user-surface .cu-toolbar-menu-summary { width: auto; justify-content: center; white-space: nowrap; }

  #user-surface .cu-citations-list .cu-citation {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
  #user-surface .cu-citations-list .cu-citation-src,
  #user-surface .cu-citations-list .cu-citation-meta,
  #user-surface .cu-citations-list .cu-citation-snip,
  #user-surface .cu-citations-list .cu-citation-link {
    grid-column: 1;
    grid-row: auto;
  }
  #user-surface .cu-citations-list .cu-citation-link {
    justify-self: start;
    margin-top: 2px;
  }
  #user-surface .cu-toolbar-menu .cu-toolbar-group-session {
    right: 0;
    left: 0;
    min-width: 0;
  }

  #user-surface .cu-cabinet-summary { min-height: 52px; padding: 10px 12px; }
  #user-surface .cu-cabinet-note-body { font-size: 0.82rem; }

  #user-surface .cu-msg-user { margin-left: 14px; }
  #user-surface .cu-msg-system { margin-right: 0; }
  #user-surface .cu-assistant-response { width: 100%; padding: 13px; }
}

@media (max-width: 430px) {
  #user-surface .cu-header p.cu-subtitle { max-width: 27ch; }
  #user-surface .cu-empty-state h3,
  #user-surface .cu-empty-title { font-size: 1.45rem; }
  #user-surface .cu-mode-btn small { display: none; }
  #user-surface .cu-toolbar-group-work { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  #user-surface .cu-sidebar,
  #user-surface .cu-sidebar-backdrop { transition: none !important; }
}

@media (prefers-contrast: more) {
  #user-surface .cu-main,
  #user-surface .cu-sidebar,
  #user-surface .cu-thread-region,
  #user-surface .cu-composer-row,
  #user-surface .cu-msg { border-width: 2px; box-shadow: none; }
}

@media (forced-colors: active) {
  #user-surface .cu-mode-btn.cu-active,
  #user-surface .cu-conv-tab.cu-active,
  #user-surface .cu-conv-item.cu-active { outline: 2px solid Highlight; }
}

/* Phase114k chat focus: keep secondary actions in the header menu so the
   conversation owns the vertical workspace without changing chat behavior. */
#user-surface .cu-main {
  gap: 8px;
  padding: clamp(12px, 1.5vw, 20px);
}

#user-surface .cu-header {
  gap: 16px;
  padding-bottom: 5px;
}

#user-surface .cu-header-actions {
  gap: 6px;
}

#user-surface .cu-header .cu-toolbar {
  order: 0;
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: visible;
}

#user-surface .cu-header .cu-toolbar-menu {
  position: relative;
  margin: 0;
}

#user-surface .cu-header .cu-toolbar-menu-summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 7px 10px;
  color: var(--cu-v2-accent-strong);
  border-color: color-mix(in srgb, var(--cu-v2-accent) 38%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 72%, var(--cu-v2-panel-2));
  box-shadow: 0 4px 14px color-mix(in srgb, var(--cu-v2-accent) 10%, transparent);
  font-weight: 760;
  white-space: nowrap;
}

#user-surface .cu-header .cu-toolbar-menu-summary::before {
  content: "";
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
  border-radius: 4px;
  background:
    radial-gradient(circle at 13px 2px, currentColor 0 1.35px, transparent 1.55px),
    linear-gradient(currentColor, currentColor) 0 1px / 10px 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 6.5px / 15px 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 12px / 10px 2px no-repeat;
  opacity: 0.9;
}

#user-surface .cu-header .cu-toolbar-menu-summary::after {
  display: inline-grid;
  width: 14px;
  height: 14px;
  margin-left: 1px;
  place-items: center;
  border-left: 1px solid color-mix(in srgb, currentColor 28%, transparent);
  content: "+";
  font-size: 0.9rem;
  line-height: 1;
}

#user-surface .cu-header .cu-toolbar-menu-summary:hover {
  color: var(--cu-v2-accent-strong);
  border-color: color-mix(in srgb, var(--cu-v2-accent) 58%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 92%, var(--cu-v2-panel-2));
  box-shadow: 0 6px 16px color-mix(in srgb, var(--cu-v2-accent) 16%, transparent);
}

#user-surface .cu-header .cu-toolbar-menu-summary:focus-visible {
  outline: 3px solid var(--cu-v2-accent);
  outline-offset: 2px;
}

#user-surface .cu-header .cu-toolbar-menu[open] .cu-toolbar-menu-summary::after {
  content: "-";
}

#user-surface .cu-header .cu-toolbar-menu .cu-toolbar-group-session {
  top: calc(100% + 8px);
  right: 0;
  bottom: auto;
  display: grid;
  max-height: min(70vh, 520px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

#user-surface .cu-header .cu-toolbar-menu .cu-tool-btn,
#user-surface .cu-header .cu-toolbar-menu .cu-lang-toggle {
  width: 100%;
}

#user-surface .cu-chat-workspace {
  gap: 6px;
}

#user-surface .cu-thread-region {
  padding: clamp(10px, 1.5vw, 16px);
}

#user-surface .cu-composer-row {
  gap: 6px;
  padding: 8px;
}

#user-surface .cu-mode-panel {
  gap: 8px;
  padding: 6px 7px;
}

#user-surface .cu-mode-btn {
  min-height: 36px;
  padding: 5px 9px;
}

#user-surface .cu-send {
  min-height: 44px;
}

@media (max-width: 760px) {
  #user-surface .cu-main {
    gap: 6px;
    padding: 10px;
  }

  /* One mobile geometry owner: the wordmark gets its intrinsic row and the
     complete action set follows below. It may wrap on genuinely narrow
     screens, rather than competing with the title or leaving the header. */
  #user-surface .cu-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    gap: 8px;
    padding-bottom: 5px;
  }

  #user-surface .cu-header-copy { min-width: 0; }
  #user-surface .cu-header h2.cu-title { white-space: normal; }

  #user-surface .cu-header-actions {
    width: 100%;
    min-width: 0;
    flex-wrap: wrap;
    gap: 6px;
  }

  #user-surface .cu-header .cu-toolbar { margin-left: auto; }

  #user-surface .cu-header-feedback-btn,
  #user-surface .cu-header .cu-toolbar-menu-summary {
    min-height: 42px;
  }

  #user-surface .cu-thread-region {
    padding: 8px;
  }

  #user-surface .cu-composer-row {
    gap: 5px;
    padding: 6px;
  }

  #user-surface .cu-mode-panel {
    gap: 5px;
    padding: 5px;
  }

  #user-surface .cu-mode-btn {
    min-height: 34px;
    padding: 4px 7px;
  }

  #user-surface .cu-header .cu-toolbar {
    overflow: visible;
  }

  #user-surface .cu-header .cu-toolbar-menu .cu-toolbar-group-session {
    right: 0;
    left: auto;
    min-width: min(280px, calc(100vw - 24px));
    max-width: min(360px, calc(100vw - 24px));
  }
}

@media (max-width: 370px) {
  #user-surface .cu-header-actions {
    gap: 4px;
  }

  #user-surface .cu-header .cu-toolbar-menu-summary {
    gap: 5px;
    padding-inline: 7px;
    font-size: 0.72rem;
  }
}

@media (max-width: 760px) {
  #user-surface .cu-mode-panel {
    display: flex;
    align-items: stretch;
    flex-direction: column;
  }

  #user-surface .cu-mode-panel-head {
    align-self: flex-end;
  }

  #user-surface .cu-mode-toggle {
    width: 100%;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  #user-surface .cu-mode-btn {
    min-width: 0;
    min-height: 52px;
    padding: 6px 4px;
    text-align: center;
  }

  #user-surface .cu-mode-btn strong {
    display: block;
    overflow-wrap: normal;
    font-size: clamp(0.62rem, 2.8vw, 0.7rem);
    hyphens: none;
    line-height: 1.15;
    text-wrap: balance;
    word-break: normal;
  }
}

/* Final cascade boundary for the answer-polish controls. */
#user-surface .cu-assistant-response {
  gap: 8px;
}

#user-surface .cu-assistant-response > .cu-msg-feedback {
  min-height: 0;
  gap: 4px;
  margin-top: -1px;
}

#user-surface .cu-msg-feedback-btn {
  min-height: 22px;
  border-color: color-mix(in srgb, var(--cu-v2-line) 78%, transparent);
  padding: 3px 7px;
  color: var(--cu-v2-faint);
  background: transparent;
  font-size: 0.66rem;
  font-weight: 650;
}

#user-surface .cu-msg-feedback-btn.cu-msg-feedback-active {
  color: var(--cu-v2-accent-strong);
  border-color: color-mix(in srgb, var(--cu-v2-accent) 45%, var(--cu-v2-line));
  background: var(--cu-v2-accent-soft);
}

#user-surface .cu-pending-card,
#user-surface .cu-pending-card-stale {
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 11px;
  border: 0;
  padding: 2px 0 4px;
  background: transparent;
}

#user-surface .cu-mode-panel {
  display: block;
  border: 1px solid var(--cu-v2-line);
  border-radius: 11px;
  padding: 4px;
  background: var(--cu-v2-panel-3);
}

#user-surface .cu-mode-description {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#user-surface .cu-mode-toggle {
  display: grid;
  grid-template-columns: none;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  gap: 4px;
  width: 100%;
  max-width: none;
  border: 0;
  border-radius: 8px;
  padding: 0;
  background: transparent;
}

#user-surface .cu-mode-btn {
  position: relative;
  display: grid;
  grid-template-columns: 16px minmax(0, auto);
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 0;
  min-height: 48px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--cu-v2-line-strong) 62%, transparent);
  border-radius: 8px;
  padding: 6px 10px;
  color: color-mix(in srgb, var(--cu-v2-muted) 78%, var(--cu-v2-ink));
  background: color-mix(in srgb, var(--cu-v2-panel-2) 72%, transparent);
  text-align: center;
  transition:
    border-color 150ms ease-out,
    background-color 150ms ease-out;
}

#user-surface .cu-mode-btn:not(:disabled):not(.cu-active):not([aria-pressed="true"]):hover {
  border-color: color-mix(in srgb, var(--cu-v2-accent) 24%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 58%, transparent);
}

#user-surface .cu-mode-btn:focus-visible {
  outline: 2px solid var(--cu-v2-accent);
  outline-offset: 1px;
}

#user-surface .cu-mode-btn.cu-active,
#user-surface .cu-mode-btn[aria-pressed="true"] {
  color: #fff;
  border-color: color-mix(in srgb, #fff 18%, #1d6258);
  background: #1d6258;
  transition: border-color 150ms ease-out;
}

#user-surface .cu-mode-btn.cu-mode-state-sync {
  transition: none;
}

#user-surface .cu-mode-btn::after {
  content: "";
  position: absolute;
  right: 20%;
  bottom: 2px;
  left: 20%;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  opacity: 0.72;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease-out;
}

#user-surface .cu-mode-btn.cu-active::after,
#user-surface .cu-mode-btn[aria-pressed="true"]::after {
  transform: scaleX(1);
}

#user-surface .cu-mode-copy {
  display: grid;
  min-width: 0;
  gap: 2px;
  justify-items: center;
  text-align: center;
}

#user-surface .cu-mode-btn strong {
  display: block;
  min-width: 0;
  overflow: hidden;
  color: inherit;
  font-size: 0.88rem;
  font-weight: 760;
  line-height: 1.1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#user-surface .cu-mode-btn small {
  display: block;
  min-width: 0;
  overflow: hidden;
  color: inherit;
  font-size: 0.72rem;
  font-weight: 570;
  line-height: 1.12;
  opacity: 0.91;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#user-surface .cu-mode-label-short,
#user-surface .cu-mode-hint-short {
  display: none;
}

#user-surface .cu-mode-btn:disabled,
#user-surface .cu-mode-btn.cu-mode-unavailable,
#user-surface .cu-mode-btn.cu-active.cu-mode-unavailable {
  color: var(--cu-v2-muted);
  border-color: transparent;
  outline: 1px dashed color-mix(in srgb, var(--cu-v2-line-strong) 72%, transparent);
  outline-offset: -2px;
  background: color-mix(in srgb, var(--cu-v2-panel-2) 60%, transparent);
  box-shadow: none;
  cursor: not-allowed;
  opacity: 0.62;
}

#user-surface .cu-mode-btn:disabled::after,
#user-surface .cu-mode-btn.cu-mode-unavailable::after {
  transform: scaleX(0);
}

/* Sending temporarily locks ready choices without disguising their selected
   state as an unavailable recipe. */
#user-surface .cu-mode-btn.cu-mode-send-busy,
#user-surface .cu-mode-btn.cu-active.cu-mode-send-busy {
  color: var(--cu-v2-ink);
  border-color: var(--cu-v2-line-strong);
  outline: 1px solid var(--cu-v2-line-strong);
  background: var(--cu-v2-panel-2);
}
#user-surface .cu-mode-btn.cu-mode-send-busy strong { color: var(--cu-v2-ink); }
#user-surface .cu-mode-btn.cu-active.cu-mode-send-busy::after,
#user-surface .cu-mode-btn[aria-pressed="true"].cu-mode-send-busy::after { transform: scaleX(1); }

@media (max-width: 760px) {
  #user-surface .cu-mode-panel {
    display: block;
    padding: 4px;
  }

  #user-surface .cu-mode-btn {
    grid-template-columns: 14px minmax(0, auto);
    gap: 5px;
    min-height: 48px;
    padding: 5px 6px;
  }

  #user-surface .cu-mode-btn strong {
    font-size: 0.82rem;
    line-height: 1.1;
  }

  #user-surface .cu-mode-btn small {
    font-size: 0.68rem;
  }

  #user-surface .cu-mode-label-long,
  #user-surface .cu-mode-hint-long {
    display: none;
  }

  #user-surface .cu-mode-label-short,
  #user-surface .cu-mode-hint-short {
    display: inline;
  }

  #user-surface .cu-pending-card,
  #user-surface .cu-pending-card-stale {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 9px;
  }
}

@media (max-width: 520px) {
  #user-surface .cu-mode-btn {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: 11px auto;
    justify-items: center;
    gap: 3px;
    min-height: 50px;
    padding: 4px 3px;
    text-align: center;
  }

  #user-surface .cu-mode-copy {
    display: block;
    width: 100%;
  }

  #user-surface .cu-mode-btn strong {
    font-size: 0.8rem;
    letter-spacing: -0.012em;
  }

  #user-surface .cu-mode-btn small {
    display: none;
  }

}

/* Theme-safe contrast for the TypeScript research status surface. */
#user-surface .cu-pending-copy .cu-pending-description {
  color: color-mix(in srgb, var(--cu-v2-muted) 78%, var(--cu-v2-ink));
}

#user-surface .cu-pending-meta .cu-pending-recovery-meta span,
#user-surface .cu-pending-step {
  color: color-mix(in srgb, var(--cu-v2-faint) 72%, var(--cu-v2-ink));
}

#user-surface .cu-pending-refresh {
  color: var(--cu-v2-accent-strong);
  border-color: color-mix(in srgb, var(--cu-v2-accent) 34%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 58%, var(--cu-v2-panel-2));
}

#user-surface .cu-msg-pending .cu-citations-empty {
  color: var(--cu-v2-muted);
  border-color: color-mix(in srgb, var(--cu-v2-brass) 46%, var(--cu-v2-line));
  background: color-mix(in srgb, var(--cu-v2-brass) 8%, var(--cu-v2-panel-2));
}

/* This rule follows the drawer breakpoint above: on phone widths the drawer
   shares the same 12px viewport gutters as the shell instead of retaining the
   desktop's fixed 340px rail. */
@media (max-width: 520px) {
  #user-surface .cu-sidebar {
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
  }
}

/* Conversation naming remains in the cabinet, including keyboard cancellation. */
#user-surface .cu-conversation-name-backdrop { position: fixed; z-index: 1105; inset: 0; display: grid; place-items: center; padding: 20px; background: color-mix(in srgb, #07130f 54%, transparent); }
#user-surface .cu-conversation-name-backdrop[hidden] { display: none; }
#user-surface .cu-conversation-name-dialog { width: min(100%, 430px); border: 1px solid var(--cu-v2-line-strong); border-radius: 16px; padding: 20px; background: var(--cu-v2-panel); color: var(--cu-v2-ink); box-shadow: 0 18px 48px rgba(5, 16, 12, 0.28); }
#user-surface .cu-conversation-name-dialog h3 { margin: 0 0 16px; color: var(--cu-v2-ink); font-family: var(--cu-font-display, inherit); font-size: 1.08rem; line-height: 1.25; }
#user-surface .cu-conversation-name-label { display: grid; gap: 8px; color: var(--cu-v2-ink); font-size: 0.9rem; font-weight: 700; }
#user-surface .cu-conversation-name-label input { width: 100%; min-height: 44px; box-sizing: border-box; border: 1px solid var(--cu-v2-line-strong); border-radius: 10px; padding: 9px 11px; background: var(--cu-v2-panel-2); color: var(--cu-v2-ink); font: inherit; font-size: 16px; }
#user-surface .cu-conversation-name-error { min-height: 1.3em; margin: 8px 0 0; color: #a63932; font-size: 0.84rem; line-height: 1.4; }
#user-surface .cu-conversation-name-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
#user-surface .cu-conversation-name-actions button { min-height: 44px; border: 1px solid var(--cu-v2-line-strong); border-radius: 10px; padding: 9px 14px; font: inherit; font-weight: 700; cursor: pointer; }
#user-surface .cu-conversation-name-label input:focus-visible, #user-surface .cu-conversation-name-actions button:focus-visible { outline: 2px solid var(--cu-v2-accent-strong); outline-offset: 3px; }
@media (max-width: 520px) { #user-surface .cu-conversation-name-backdrop { align-items: end; padding: 12px; } #user-surface .cu-conversation-name-dialog { width: 100%; padding: 18px; } #user-surface .cu-conversation-name-actions { display: grid; grid-template-columns: 1fr 1fr; } #user-surface .cu-conversation-name-actions button { width: 100%; } }

/* Question refinement: explicit action, independent from the composer's draft. */
#user-surface .cu-mode-btn { grid-template-columns: 22px minmax(0, auto); grid-template-rows: auto; }
#user-surface .cu-mode-symbol {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
}
#user-surface .cu-mode-icon {
  display: block;
  width: 20px; height: 20px;
  fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8;
}

/* Keep the mode glyphs quiet, but retain a trace of their native meaning in
   every button state without tinting the control or its labels. */
#user-surface .cu-mode-icon[data-mode-icon="lightning"] {
  color: color-mix(in srgb, #e8b94f 32%, currentColor);
}
#user-surface .cu-mode-icon[data-mode-icon="brain"] {
  color: color-mix(in srgb, #dfa0a4 32%, currentColor);
}
#user-surface .cu-answer-mode {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  min-width: 30px; min-height: 30px; box-sizing: border-box; padding: 3px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 999px;
  background: var(--cu-v2-panel-2);
  color: var(--cu-v2-ink);
  font-size: 18px; line-height: 1; cursor: help;
  font-weight: 650;
}
#user-surface .cu-mode-tooltip {
  display: none; position: absolute; top: calc(100% + 5px); right: 0; z-index: 3;
  width: max-content; max-width: 180px; padding: 7px 10px;
  border: 1px solid var(--cu-v2-line); border-radius: 8px;
  background: var(--cu-v2-panel); color: var(--cu-v2-ink); font-size: 12px; line-height: 1.4;
}
#user-surface .cu-answer-mode:is(:hover, :focus) .cu-mode-tooltip { display: block; }
#user-surface .cu-answer-mode:focus-visible { outline: 2px solid var(--cu-v2-accent-strong); outline-offset: 2px; }
#user-surface .cu-answer-mode-legacy { padding: 4px 10px; font-size: 12px; cursor: default; }
#user-surface .cu-answer-heading {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px;
}
#user-surface .cu-answer-heading .cu-answer-meta { margin: 0; min-width: 0; }
#user-surface .cu-answer-heading .cu-answer-mode { flex: 0 0 auto; margin-left: auto; }
#user-surface .cu-question-group {
  align-self: flex-end; width: fit-content; max-width: min(100%, 700px); box-sizing: border-box;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 32%, var(--cu-v2-line));
  border-radius: 16px; background: var(--cu-v2-panel-2);
}
#user-surface .cu-msg-user .cu-question-group > .cu-msg-body {
  width: auto; max-width: none; margin: 0; padding: 12px 14px 4px;
  border: 0; border-radius: 16px 16px 0 0; background: transparent; color: var(--cu-v2-ink);
}
#user-surface .cu-refine {
  width: 100%; box-sizing: border-box; margin: 0; padding: 0 8px 4px;
  border: 0;
}
#user-surface .cu-refine summary {
  display: inline-flex; align-items: center; gap: 7px;
  width: fit-content; max-width: 100%; margin-left: 0; cursor: pointer;
  padding: 6px 10px; min-height: 36px; box-sizing: border-box;
  border: 1px solid color-mix(in srgb, var(--cu-v2-accent) 26%, var(--cu-v2-line));
  border-radius: 9px; color: var(--cu-v2-accent-strong);
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 65%, var(--cu-v2-panel));
  font-weight: 650; font-size: 13px; line-height: 1.4;
  list-style: none; text-decoration: none; white-space: normal;
}
#user-surface .cu-refine summary::-webkit-details-marker { display: none; }
#user-surface .cu-refine summary::marker { content: ""; }
#user-surface .cu-refine-edit-icon { width: 16px; height: 16px; flex: 0 0 16px; fill: currentColor; }
#user-surface .cu-refine summary:hover { background: var(--cu-v2-accent-soft); }
#user-surface .cu-refine[open] > summary,
#user-surface .cu-refine summary:active {
  background: var(--cu-v2-accent-soft); border-color: var(--cu-v2-accent);
}
#user-surface .cu-question-group:has(.cu-refine[open]) { width: min(100%, 700px); }
@media (pointer: coarse) { #user-surface .cu-refine summary { min-height: 44px; } }
#user-surface .cu-refine form {
  margin-top: 10px; padding: 16px; border: 1px solid var(--cu-v2-line);
  border-radius: 16px; background: var(--cu-v2-panel-2); color: var(--cu-v2-ink);
}
#user-surface .cu-refine label { display: grid; gap: 9px; font-weight: 600; }
#user-surface .cu-refine .cu-refine-mode-label { margin-top: 14px; gap: 6px; font-size: 13px; }
#user-surface .cu-refine select {
  width: fit-content; max-width: 100%; min-height: 44px; padding: 8px 10px;
  border: 1px solid var(--cu-v2-line); border-radius: 8px;
  font: inherit; font-size: 16px; background: var(--cu-v2-panel); color: var(--cu-v2-ink);
}
#user-surface .cu-refine-mode-hint { display: block; margin-top: 6px; color: var(--cu-v2-muted); font-size: 12px; line-height: 1.4; }
#user-surface .cu-refine textarea {
  width: 100%; box-sizing: border-box; min-height: 112px; resize: vertical;
  border: 1px solid var(--cu-v2-line); border-radius: 10px; padding: 12px;
  font: inherit; font-size: 16px; line-height: 1.5;
  background: var(--cu-v2-panel); color: var(--cu-v2-ink);
}
#user-surface .cu-refine p { margin: 12px 0; font-size: 13px; line-height: 1.5; color: var(--cu-v2-muted); }
#user-surface .cu-refine-actions { display: flex; flex-wrap: wrap; gap: 8px; }
#user-surface .cu-refine button {
  min-height: 44px; padding: 10px 15px; border-radius: 10px;
  border: 1px solid var(--cu-v2-line); font: inherit; font-weight: 600;
  background: var(--cu-v2-panel); color: var(--cu-v2-ink); cursor: pointer;
}
#user-surface .cu-refine button[type=submit] { background: var(--cu-v2-accent-strong); color: var(--cu-v2-panel); }
#user-surface .cu-refine button:disabled { opacity: .55; cursor: not-allowed; }
#user-surface .cu-refine :is(summary, textarea, button, select):focus-visible {
  outline: 2px solid var(--cu-v2-accent-strong); outline-offset: 3px;
}

/* Sources stay below the answer as one compact, native disclosure. The open
   state belongs to this DOM node so polling and conversations cannot own it. */
#user-surface .cu-citations-navigation {
  margin-top: 10px;
  border-color: color-mix(in srgb, var(--cu-v2-brass) 40%, var(--cu-v2-line));
  border-left-color: var(--cu-v2-brass);
  background: color-mix(in srgb, var(--cu-v2-brass) 5%, var(--cu-v2-panel));
}

#user-surface .cu-citations-disclosure > summary {
  display: flex;
  min-height: 42px;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: var(--cu-v2-accent-strong);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 760;
  line-height: 1.25;
  list-style: none;
}

#user-surface .cu-citations-disclosure > summary::-webkit-details-marker { display: none; }
#user-surface .cu-citations-disclosure > summary::marker { content: ""; }
#user-surface .cu-citations-disclosure > summary:hover {
  background: color-mix(in srgb, var(--cu-v2-accent-soft) 64%, transparent);
}
#user-surface .cu-citations-disclosure > summary:focus-visible {
  outline: 2px solid var(--cu-v2-accent);
  outline-offset: -2px;
}

#user-surface .cu-citations-disclosure-show,
#user-surface .cu-citations-disclosure-hide {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
}
#user-surface .cu-citations-disclosure-hide,
#user-surface .cu-citations-disclosure[open] .cu-citations-disclosure-show { display: none; }
#user-surface .cu-citations-disclosure[open] .cu-citations-disclosure-hide { display: inline-flex; }

#user-surface .cu-citations-disclosure-chevron {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  margin-left: auto;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 150ms ease-out;
}
#user-surface .cu-citations-disclosure[open] .cu-citations-disclosure-chevron {
  transform: rotate(225deg) translate(-2px, -1px);
}

#user-surface .cu-citations-disclosure-content {
  border-top: 1px solid var(--cu-v2-line);
}

#user-surface .cu-source-text {
  grid-column: 1 / -1;
  margin: 8px 0 2px;
  color: var(--cu-v2-ink);
}
#user-surface .cu-source-text > summary {
  width: fit-content;
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--cu-v2-link);
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 650;
}
#user-surface .cu-source-text > summary:focus-visible,
#user-surface .cu-source-text-actions button:focus-visible,
#user-surface .cu-source-map-links button:focus-visible {
  outline: 2px solid var(--cu-v2-focus, #286f9b);
  outline-offset: 2px;
}
#user-surface .cu-source-text-content {
  display: grid;
  gap: 8px;
  margin-top: 6px;
}
#user-surface .cu-source-text-status {
  min-height: 1.2em;
  color: var(--cu-v2-muted);
  font-size: 0.82rem;
}
#user-surface .cu-source-image-status,
#user-surface .cu-source-graph-status {
  min-height: 1.2em;
  color: var(--cu-v2-muted);
  font-size: 0.82rem;
}
#user-surface .cu-source-text-note-visual-status { font-weight: 650; }
#user-surface .cu-citation-snip-label {
  display: block;
  margin-bottom: 3px;
  color: var(--cu-v2-muted);
  font-size: 0.72rem;
  font-weight: 650;
}
#user-surface .cu-source-map {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  align-items: stretch;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--cu-v2-line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--cu-v2-panel) 94%, var(--cu-v2-accent) 6%);
}
#user-surface .cu-source-map-root {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 12px;
  border-inline-end: 1px solid var(--cu-v2-line);
  color: var(--cu-v2-ink);
  overflow-wrap: anywhere;
}
#user-surface .cu-source-map-root-label {
  color: var(--cu-v2-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.025em;
}
#user-surface .cu-source-map-root > strong { font-size: 0.9rem; }
#user-surface .cu-source-map-root > span:last-child:not(.cu-source-map-root-label) {
  color: var(--cu-v2-muted);
  font-size: 0.78rem;
}
#user-surface .cu-source-map-links {
  min-width: 0;
  padding: 10px 12px;
}
#user-surface .cu-source-map-hint {
  margin: 0 0 8px;
  color: var(--cu-v2-muted);
  font-size: 0.76rem;
  line-height: 1.4;
}
#user-surface .cu-source-map-neighbors {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}
#user-surface .cu-source-map-neighbor {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: stretch;
  gap: 7px;
  min-width: 0;
}
#user-surface .cu-source-map-edge {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cu-v2-accent);
  font-size: 1.1rem;
}
#user-surface .cu-source-map-node {
  display: grid;
  gap: 3px;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 8px;
  background: var(--cu-v2-surface, #fff);
  color: var(--cu-v2-ink);
  overflow-wrap: anywhere;
}
#user-surface .cu-source-map-node > strong { font-size: 0.82rem; }
#user-surface .cu-source-map-node > small {
  color: var(--cu-v2-muted);
  font-size: 0.72rem;
  line-height: 1.35;
}
#user-surface .cu-source-map-links > button {
  min-height: 44px;
  margin-top: 7px;
  padding: 7px 10px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 8px;
  background: var(--cu-v2-surface, #fff);
  color: var(--cu-v2-link);
  font: inherit;
  cursor: pointer;
}
#user-surface .cu-source-map-links > button:hover { border-color: currentColor; }
@media (max-width: 620px) {
  #user-surface .cu-source-map { grid-template-columns: minmax(0, 1fr); }
  #user-surface .cu-source-map-root {
    border-inline-end: 0;
    border-bottom: 1px solid var(--cu-v2-line);
  }
  #user-surface .cu-source-map-links { padding: 10px; }
}
#user-surface .cu-source-text-value {
  max-height: 24rem;
  overflow: auto;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 8px;
  background: var(--cu-v2-surface, #fff);
  color: var(--cu-v2-ink);
  font: inherit;
  font-size: 0.88rem;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
#user-surface .cu-source-text-notes {
  margin: 0;
  padding-inline-start: 1.25rem;
  color: var(--cu-v2-muted);
  font-size: 0.82rem;
}
#user-surface .cu-source-text-note-trust { font-weight: 650; }
#user-surface .cu-source-text-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
#user-surface .cu-source-text-actions button {
  min-height: 40px;
  padding: 7px 11px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 8px;
  background: var(--cu-v2-surface, #fff);
  color: var(--cu-v2-link);
  font: inherit;
  font-size: 0.84rem;
  cursor: pointer;
}
#user-surface .cu-source-text-actions button:hover { border-color: currentColor; }
#user-surface .cu-source-text-image {
  display: block;
  max-width: 100%;
  max-height: 32rem;
  object-fit: contain;
  object-position: left top;
}

@media (pointer: coarse) {
  #user-surface .cu-citations-disclosure > summary { min-height: 44px; }
  #user-surface .cu-source-text > summary,
  #user-surface .cu-source-text-actions button,
  #user-surface .cu-source-map-links > button { min-height: 44px; }
}

#user-surface .cu-toolbar .cu-tool-updates-link { gap: 8px; }
#user-surface .cu-tool-updates-icon {
  display: inline-flex;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  align-items: center;
  justify-content: center;
  opacity: 0.82;
}
#user-surface .cu-tool-updates-icon svg { width: 18px; height: 18px; }
#user-surface .cu-tool-updates-icon path {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

/* Final motion boundary for the TypeScript dialogue owner. */
@media (prefers-reduced-motion: reduce) {
  #user-surface .cu-pending-orbit::before {
    animation: none !important;
  }

  #user-surface .cu-mode-btn,
  #user-surface .cu-mode-btn::after,
  #user-surface .cu-msg-feedback-btn,
  #user-surface .cu-msg-copy-btn,
  #user-surface .cu-pending-refresh {
    transition: none !important;
    transform: none !important;
  }

  #user-surface .cu-citations-disclosure-chevron { transition: none; }
}

#user-surface .cu-catalog-cards {
  display: grid;
  gap: 9px;
  margin-top: 14px;
  border: 1px solid var(--cu-v2-line);
  border-radius: 12px;
  padding: 12px;
  color: var(--cu-v2-ink);
  background: var(--cu-v2-panel);
}
#user-surface .cu-catalog-cards-heading {
  margin: 0;
  color: var(--cu-v2-muted);
  font: 700 0.78rem/1.35 var(--cu-v2-font-body, "Manrope", sans-serif);
}
#user-surface .cu-catalog-cards-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr));
  gap: 9px;
}
#user-surface .cu-catalog-card {
  min-width: 0;
  border: 1px solid var(--cu-v2-line);
  border-radius: 10px;
  padding: 11px 12px;
  background: var(--cu-v2-panel-2);
}
#user-surface .cu-catalog-card-title {
  margin: 0;
  color: var(--cu-v2-ink);
  font: 650 0.9rem/1.45 var(--cu-v2-font-body, "Manrope", sans-serif);
  overflow-wrap: anywhere;
}
#user-surface .cu-catalog-card-archive {
  margin: 4px 0 0;
  color: var(--cu-v2-muted);
  font-size: 0.75rem;
}
#user-surface .cu-catalog-card-availability {
  display: grid;
  justify-items: start;
  gap: 5px;
  margin-top: 10px;
  border-top: 1px solid var(--cu-v2-line);
  padding-top: 9px;
}
#user-surface .cu-catalog-card-status {
  border-radius: 999px;
  padding: 3px 8px;
  color: var(--cu-v2-accent-strong);
  background: var(--cu-v2-accent-soft);
  font-size: 0.74rem;
  font-weight: 750;
}
#user-surface .cu-catalog-card-detail {
  margin: 0;
  color: var(--cu-v2-muted);
  font-size: 0.78rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

@media (max-width: 640px) {
  #user-surface .cu-catalog-cards { padding: 10px; }
  #user-surface .cu-catalog-cards-list { grid-template-columns: minmax(0, 1fr); }
}