/* Chat-first shell — layout overrides on top of css/index.css */

/* Avoid sign-in flash while Clerk/session resolves */
html[data-auth-check="pending"] body {
  overflow: hidden;
  background: var(--bg-app);
}

html[data-auth-check="pending"] #clerk-sign-in-screen,
html[data-auth-check="pending"] #chat-app {
  display: none !important;
}

#chat-app[hidden] {
  display: none !important;
}

.chat-app-shell {
  flex-direction: row;
  align-items: stretch;
  position: relative;
  gap: 0;
  padding: 0;
}

/* ── Left sidebar ─────────────────────────────────────────────────────── */

.chat-sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 190;
  background: var(--scrim);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}

.chat-sidebar-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.chat-history-panel {
  flex: 0 0 252px;
  width: 252px;
  min-width: 0;
  z-index: 200;
  border-right: 1px solid var(--line);
  background: var(--bg-app);
  transition:
    width var(--dur-base) var(--ease-out),
    flex-basis var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out),
    opacity var(--dur-base) var(--ease-out);
}

.chat-sidebar-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--surface-strong, var(--panel));
}

.chat-sidebar-top {
  padding: 12px 8px 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

.chat-sidebar-brand {
  display: flex;
  align-items: center;
  padding: 4px 10px 8px;
  user-select: none;
}

.chat-sidebar-logo {
  display: block;
  width: 88px;
  height: auto;
}

.chat-sidebar-new-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: var(--btn-radius);
  background: transparent;
  color: var(--text-soft);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  box-sizing: border-box;
  text-align: left;
}

.chat-sidebar-new-btn:hover {
  background: rgba(var(--on-rgb), 0.05);
  color: var(--text);
}

.chat-sidebar-new-btn:active,
.chat-sidebar-link-btn:active {
  background: rgba(var(--on-rgb), 0.09);
}

.chat-sidebar-new-btn .material-symbols-rounded {
  font-size: 18px;
  color: var(--text-soft);
  opacity: 0.85;
}

.chat-sidebar-new-btn:hover .material-symbols-rounded {
  color: var(--text);
  opacity: 1;
}

.chat-sidebar-link-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: var(--btn-radius);
  background: transparent;
  color: var(--text-soft);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  text-decoration: none;
  box-sizing: border-box;
}

/* The class sets display:flex, which overrides the `hidden` attribute —
   restate it so gated links (Admin, Agent Studio) actually disappear. */
.chat-sidebar-link-btn[hidden] {
  display: none;
}

.chat-sidebar-link-btn:hover {
  background: rgba(var(--on-rgb), 0.05);
  color: var(--text);
  text-decoration: none;
}

.chat-sidebar-link-btn .material-symbols-rounded {
  font-size: 18px;
  opacity: 0.85;
}

#chat-friend-link .material-symbols-rounded {
  color: var(--accent);
  opacity: 1;
}

.friend-nav-badge {
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.25);
}

/* ── Embedded Desmos graphing calculator ──────────────────────────────── */
.desmos-card {
  width: min(1040px, 96vw);
  max-width: min(1040px, 96vw);
  height: min(82vh, 820px);
  display: flex;
  flex-direction: column;
}
.desmos-calculator {
  flex: 1;
  min-height: 0;
  border-radius: var(--radius-md, 12px);
  overflow: hidden;
  background: #fff;
}
.desmos-error {
  padding: 24px;
  color: var(--text-muted);
}

/* Inline ```desmos embeds in chat messages */
.jf-desmos {
  margin: 10px 0;
  border: 1px solid var(--line, var(--border));
  border-radius: 14px;
  overflow: hidden;
}
.jf-desmos-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 8px 8px 12px;
  border-bottom: 1px solid var(--line, var(--border));
  background: rgba(var(--on-rgb), 0.04);
}
.jf-desmos-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.jf-desmos-title .material-symbols-rounded {
  font-size: 17px;
  color: var(--accent);
}
.jf-desmos-expand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: none;
  border-radius: var(--btn-radius);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.jf-desmos-expand:hover {
  background: var(--hover-fill-strong);
  color: var(--text);
}
.jf-desmos-expand .material-symbols-rounded {
  font-size: 16px;
}
.jf-desmos-host {
  position: relative;
  height: 320px;
  background: #fff;
}
.jf-desmos-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #666;
}

/* ── Quiz: inline "start test" card + focused test popup ───────────────── */
.jf-quiz {
  margin: 10px 0;
}
.jf-quiz-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line, var(--border));
  border-radius: 14px;
  background: rgba(var(--on-rgb), 0.05);
}
.jf-quiz-ico {
  font-size: 22px;
}
.jf-quiz-meta {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  flex: 1;
  min-width: 0;
}
.jf-quiz-meta strong {
  color: var(--text);
  font-size: 0.95rem;
}
.jf-quiz-meta span {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.jf-quiz-start {
  flex: none;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent, #fff);
  font: inherit;
  font-weight: var(--btn-font-weight, 600);
  font-size: 0.85rem;
  padding: 8px 20px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.jf-quiz-start:hover {
  background: var(--btn-primary-bg-hover, var(--accent));
}
.jf-quiz-start:active {
  transform: scale(0.98);
}

.quiz-overlay {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.quiz-modal {
  width: min(560px, 100%);
  max-height: min(88vh, 720px);
  display: flex;
  flex-direction: column;
  background: var(--surface, var(--bg-900));
  border: 1px solid var(--line, var(--border));
  border-radius: 20px;
  overflow: hidden;
}
.quiz-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line, var(--border));
}
.quiz-progress-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.quiz-progress-bar {
  flex: 1;
  height: 7px;
  border-radius: 999px;
  background: var(--surface-soft, rgba(255, 255, 255, 0.08));
  overflow: hidden;
}
.quiz-progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 999px;
  transition: width var(--dur-slow) var(--ease-out);
}
.quiz-progress-txt {
  flex: none;
  font-size: 0.76rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}
.quiz-close {
  flex: none;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--btn-radius);
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.quiz-close:hover {
  color: var(--text);
  background: var(--surface-soft, rgba(255, 255, 255, 0.06));
}
.quiz-body {
  padding: 20px;
  overflow-y: auto;
}
.quiz-qnum {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.quiz-prompt {
  margin: 0 0 18px;
  font-size: 1.2rem;
  line-height: 1.35;
  color: var(--text);
  font-weight: 600;
}
.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.quiz-opt {
  text-align: left;
  border: 1.5px solid var(--line, var(--border));
  background: var(--surface-soft, rgba(255, 255, 255, 0.04));
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.quiz-opt:hover:not(:disabled) {
  border-color: var(--accent);
}
.quiz-opt:disabled {
  cursor: default;
}
.quiz-opt.correct {
  border-color: var(--accent-strong);
  background: var(--success-pill-bg);
}
.quiz-opt.wrong {
  border-color: var(--danger);
  background: rgba(var(--danger-rgb), 0.14);
}
.quiz-input {
  width: 100%;
  box-sizing: border-box;
  border: 1.5px solid var(--line, var(--border));
  background: var(--surface-soft, rgba(255, 255, 255, 0.04));
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  resize: vertical;
}
.quiz-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.2);
}
.quiz-reveal,
.quiz-next {
  margin-top: 16px;
}
.quiz-answer {
  margin-top: 16px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.28);
}
.quiz-answer-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 5px;
}
.quiz-answer p {
  margin: 0;
  color: var(--text);
  line-height: 1.45;
}
.quiz-grade {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.quiz-grade-q {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-right: auto;
}
.quiz-grade-btn {
  border: 1.5px solid var(--line, var(--border));
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 8px 16px;
  font: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.quiz-grade-btn.got:hover {
  border-color: var(--accent-strong);
  color: var(--success-text);
}
.quiz-grade-btn.miss:hover {
  border-color: var(--danger);
  color: var(--error-text);
}
.quiz-note {
  margin: 14px 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.quiz-results {
  text-align: center;
  padding: 14px 0;
}
.quiz-results-emoji {
  font-size: 44px;
}
.quiz-results-score {
  font-size: 2rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  margin-top: 6px;
}
.quiz-results-msg {
  color: var(--text-muted);
  margin: 6px 0 18px;
}
.quiz-results-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.chat-app-shell:not(.sidebar-open) .chat-history-panel {
  flex: 0 0 0;
  width: 0;
  opacity: 0;
  pointer-events: none;
  border-right-color: transparent;
  overflow: hidden;
}

.chat-conv-search {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 4px 12px 2px;
  padding: 6px 10px;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--line);
  background: var(--hover-fill);
  color: var(--text-muted);
}
.chat-conv-search[hidden] {
  display: none;
}
.chat-conv-search .material-symbols-rounded {
  font-size: 16px;
  flex-shrink: 0;
}
.chat-conv-search input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-main);
  font-size: 13px;
  outline: none;
}
.chat-conv-search input::placeholder {
  color: var(--text-faint);
}

.chat-conv-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 8px 8px 4px;
  font-family: var(--font-main);
  font-size: 13px;
}

.chat-sidebar-mid {
  padding: 6px 8px 10px;
  border-top: 1px solid var(--line);
}

.chat-sidebar-empty {
  margin: 12px 10px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-muted);
}

.chat-sidebar-group {
  margin-bottom: 2px;
  width: 100%;
}

.chat-conv-row {
  display: flex;
  align-items: center;
  gap: 2px;
  width: 100%;
  border-radius: 8px;
  transition: background var(--dur-fast) var(--ease-out);
}

.chat-conv-row:hover:not(:has(.chat-conv-item.active)) {
  background: rgba(var(--on-rgb), 0.05);
}

.chat-conv-row:has(.chat-conv-item.active) {
  background: rgba(var(--accent-rgb), 0.16);
}

.chat-conv-row .chat-conv-item,
.chat-conv-row .chat-conv-rename-input {
  flex: 1;
  min-width: 0;
}

.chat-conv-rename-input {
  border: 1px solid rgba(var(--accent-rgb), 0.45);
  border-radius: 8px;
  padding: 8px 10px;
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-app);
  outline: none;
  box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.12);
}

.chat-conv-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 1px;
  transition: opacity var(--dur-fast) var(--ease-out);
}

@media (hover: hover) {
  .chat-conv-row .chat-conv-actions,
  .chat-project-sub-row .chat-conv-actions {
    opacity: 0;
    pointer-events: none;
  }

  .chat-conv-row:hover .chat-conv-actions,
  .chat-project-sub-row:hover .chat-conv-actions,
  .chat-conv-row:focus-within .chat-conv-actions,
  .chat-project-sub-row:focus-within .chat-conv-actions {
    opacity: 1;
    pointer-events: auto;
  }
}

.chat-conv-action {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--btn-radius);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

@media (pointer: coarse) {
  .chat-conv-action {
    width: 44px;
    height: 44px;
  }
}

.chat-conv-action:hover {
  background: rgba(var(--on-rgb), 0.08);
  color: var(--text);
}

.chat-conv-delete:hover {
  background: rgba(var(--danger-rgb), 0.12);
  color: var(--danger);
}

.chat-conv-action .material-symbols-rounded {
  font-size: 17px;
}

.chat-conv-row .chat-conv-item {
  border-radius: 0;
  padding: 8px 10px;
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  min-width: 0;
  background: transparent !important;
  color: var(--text-soft);
  transition: color var(--dur-base) var(--ease-out);
}

.chat-conv-row .chat-conv-item:hover {
  background: transparent !important;
  color: var(--text);
}

.chat-conv-row:has(.chat-conv-item.active) .chat-conv-item,
.chat-conv-row .chat-conv-item.active {
  background: transparent !important;
  color: var(--accent);
  font-weight: 600;
}

.chat-conv-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-project-subtree {
  margin: 0 0 4px 0;
  padding-left: 10px;
}

.chat-project-sub-row {
  display: flex;
  align-items: center;
  gap: 2px;
  width: 100%;
  border-radius: 8px;
  transition: background var(--dur-fast) var(--ease-out);
}

.chat-project-sub-row:hover {
  background: rgba(var(--on-rgb), 0.05);
}

.chat-project-sub-row .chat-project-sub-item,
.chat-project-sub-row .chat-project-rename-input {
  flex: 1;
  min-width: 0;
}

.chat-project-sub-item {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  margin-top: 2px;
  padding: 6px 8px;
  border: none;
  border-radius: 0;
  background: transparent !important;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out);
}

.chat-project-sub-item .material-symbols-rounded {
  font-size: 15px;
  flex-shrink: 0;
  opacity: 0.75;
}

.chat-project-sub-item span:last-child,
.chat-project-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-project-sub-row:hover .chat-project-sub-item {
  color: var(--text);
}

.chat-project-sub-item:hover {
  background: transparent !important;
}

/* Match page background — avoid panel tint in the chat column */
.chat-app-shell .panel-surface,
.chat-app-shell #chat-content,
.chat-app-shell #chat-messages {
  background: var(--bg-app);
}

.chat-app-shell .editor-iframe.chat-stage {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.chat-app-shell .chat-main-panel.panel {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
}

.chat-app-shell #chat-content {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.chat-app-shell #chat-messages {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding-top: 56px;
}

.chat-app-shell #typing-indicator {
  flex-shrink: 0;
  margin-left: 14px;
  margin-right: 14px;
}

.chat-app-shell .chat-composer-wrap {
  position: relative;
  flex-shrink: 0;
  width: 100%;
  padding: 0 14px 16px;
  box-sizing: border-box;
}

/* Floating "scroll to latest" pill — sits centered just above the composer. */
.chat-scroll-bottom-btn {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-pill, 999px);
  border: 1px solid var(--line);
  background: var(--surface-strong, var(--surface-2, var(--panel)));
  color: var(--text);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  z-index: 30;
  opacity: 0.95;
  transition: opacity var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.chat-scroll-bottom-btn:hover {
  opacity: 1;
  border-color: var(--line-strong);
  transform: translateX(-50%) translateY(-1px);
}
.chat-scroll-bottom-btn[hidden] {
  display: none;
}
.chat-scroll-bottom-btn .material-symbols-rounded {
  font-size: 20px;
}

/* ── Slash command palette ────────────────────────────────────────────── */
.chat-slash-menu {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: calc(100% + 6px);
  z-index: 50;
  max-height: min(320px, 46vh);
  overflow-y: auto;
  padding: 6px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface-strong, var(--panel));
  animation: chatSlashIn 0.14s ease;
}

.chat-slash-menu[hidden] {
  display: none !important;
}

.chat-slash-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 8px 12px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
}

.chat-slash-item:hover {
  background: var(--hover-fill);
}

.chat-slash-item.active {
  background: rgba(var(--focus-rgb), 0.12);
}

.chat-slash-item > .material-symbols-rounded {
  flex-shrink: 0;
  font-size: 20px;
  color: var(--text-muted);
}

.chat-slash-item.active > .material-symbols-rounded {
  color: var(--text-accent-soft, var(--text));
}

.chat-slash-item-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.chat-slash-item-name {
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.chat-slash-item-arg {
  font-weight: 400;
  color: var(--text-muted);
}

.chat-slash-item-hint {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@keyframes chatSlashIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .chat-slash-menu { animation: none; }
}

.chat-app-shell #chat-input-area,
.chat-app-shell .chat-composer-surface {
  border-top: none;
  background: var(--surface-strong, var(--panel));
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 8px 10px 8px 8px;
  display: block;
  overflow: visible;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}

/* Resting affordance: the surface answers the cursor before it is focused */
.chat-app-shell #chat-input-area:hover:not(:focus-within),
.chat-app-shell .chat-composer-surface:hover:not(:focus-within) {
  border-color: var(--line-strong);
}

.chat-app-shell #chat-input-area:focus-within,
.chat-app-shell .chat-composer-surface:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

.chat-app-shell .chat-composer-row {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  min-height: 40px;
}

.chat-app-shell .chat-composer-add-wrap {
  position: relative;
  flex-shrink: 0;
  margin-bottom: 2px;
}

.chat-app-shell .chat-composer-add-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.chat-app-shell .chat-composer-add-btn:hover:not(:disabled) {
  background: rgba(var(--on-rgb), 0.06);
  color: var(--text);
}

.chat-app-shell .chat-composer-add-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.chat-app-shell .chat-composer-add-btn .material-symbols-rounded {
  font-size: 22px;
  line-height: 1;
}

.chat-app-shell .chat-composer-add-btn[aria-expanded="true"] {
  background: rgba(var(--on-rgb), 0.08);
  color: var(--text);
}

.chat-composer-dropup {
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  z-index: 40;
  min-width: 196px;
  max-height: min(360px, calc(100vh - 140px));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 6px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface-strong, var(--panel));
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chat-composer-dropup[hidden] {
  display: none !important;
}

.chat-composer-dropup-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font-family: var(--font-main);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
}

.chat-composer-dropup-item:hover:not(:disabled) {
  background: rgba(var(--on-rgb), 0.06);
}

.chat-composer-dropup-item:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.chat-composer-dropup-item.active {
  background: rgba(var(--focus-rgb), 0.1);
  color: var(--text-accent-soft);
}

.chat-composer-dropup-item .material-symbols-rounded {
  font-size: 20px;
  color: var(--text-muted);
}

.chat-composer-dropup-item.active .material-symbols-rounded {
  color: var(--text-accent-soft);
}

.chat-app-shell .chat-composer-field {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 40px;
}

.chat-app-shell .chat-composer-field #chat-input-overlay {
  position: absolute;
  inset: 0;
  padding: 8px 4px;
  font-size: 16px;
  line-height: 1.5;
  border: none;
  pointer-events: none;
  overflow: hidden;
}
.chat-app-shell .chat-composer-surface.chat-composer-build-mode {
  border-color: rgba(var(--focus-rgb), 0.45);
  box-shadow: 0 0 0 1px rgba(var(--focus-rgb), 0.12);
}

.chat-app-shell .composer-column {
  gap: 10px;
}

.chat-app-shell .composer-input-stack {
  min-height: 40px;
}

.chat-app-shell #chat-input {
  min-height: 24px;
  max-height: 160px;
  padding: 8px 4px;
  font-size: 16px;
  line-height: 1.5;
  border: none;
  background: transparent;
  width: 100%;
  resize: none;
  box-sizing: border-box;
}

.chat-app-shell .composer-meta {
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: nowrap;
}

.chat-app-shell #chat-input-area.chat-composer-dragover,
.chat-app-shell .chat-composer-surface.chat-composer-dragover {
  border-color: rgba(var(--accent-rgb), 0.55);
  background: rgba(var(--accent-rgb), 0.06);
  box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.12);
}

.chat-app-shell .chat-composer-controls {
  flex: 1 1 auto;
  min-width: 0;
  flex-wrap: wrap;
  overflow: visible;
}

.chat-app-shell .chat-model-picker,
.chat-app-shell .mode-toggle-wrap {
  flex-shrink: 0;
}

.chat-app-shell .chat-composer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.chat-app-shell .chat-composer-controls .mode-pill {
  min-height: 38px;
  padding: 8px 14px 8px 10px;
  font-size: 12px;
  border-radius: 999px;
  background: rgba(var(--on-rgb), 0.04);
}

.chat-app-shell .chat-composer-controls .mode-pill .mode-pill-icon,
.chat-app-shell .chat-composer-controls .mode-pill .mode-pill-caret {
  font-size: 16px !important;
}

.chat-app-shell #send-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  margin-bottom: 2px;
  border-radius: 50%;
  border: none;
  flex-shrink: 0;
}

.chat-app-shell #send-button .material-symbols-rounded {
  font-size: 22px;
  width: 22px;
  height: 22px;
  line-height: 1;
}

.chat-app-shell .chat-attach-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 999px;
  background: rgba(var(--on-rgb), 0.04);
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.chat-app-shell .chat-attach-button:hover:not(:disabled) {
  background: rgba(var(--on-rgb), 0.08);
  color: var(--text);
}

.chat-app-shell .chat-attach-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.chat-app-shell .chat-attach-button .material-symbols-rounded {
  font-size: 20px;
}

.chat-composer-dropup-item[hidden] {
  display: none !important;
}

.chat-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 4px 8px;
}

/* The class sets display:flex, which overrides the `hidden` attribute — so an
   empty attachments row kept adding padding above the input. Respect `hidden`. */
.chat-attachments[hidden] {
  display: none;
}

.chat-attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  padding: 6px 8px 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  font-size: 12px;
  color: var(--text);
}

.chat-attachment-chip-readonly {
  padding-right: 10px;
}

.chat-attachment-chip .material-symbols-rounded {
  font-size: 16px;
  color: var(--accent);
}

.chat-attachment-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}

.chat-attachment-size {
  color: var(--text-muted);
  font-size: 11px;
}

.chat-attachment-remove {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

/* Extend the hit area beyond the 26px visual */
.chat-attachment-remove::after {
  content: "";
  position: absolute;
  inset: -6px;
}

.chat-attachment-remove:hover {
  background: rgba(var(--on-rgb), 0.08);
  color: var(--text);
}

.chat-attachment-remove .material-symbols-rounded {
  font-size: 16px;
}

.chat-message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.chat-app-shell #composer-stats {
  display: none !important;
}

.chat-app-shell .chat-composer-disclaimer {
  margin: 10px 0 0;
  text-align: center;
  font-size: 12px;
  line-height: 1.4;
  color: var(--text-muted);
}

.chat-sidebar-foot {
  padding: 8px 8px 12px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chat-account-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--btn-radius);
  background: var(--panel);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-main);
  color: inherit;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.chat-account-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: color-mix(in srgb, var(--accent) 6%, var(--panel));
}

.chat-account-btn[hidden] {
  display: none !important;
}

.chat-account-avatar-wrap {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  position: relative;
}

.chat-account-avatar,
.chat-account-initials {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.chat-account-initials {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.02em;
}

.chat-account-initials[hidden],
.chat-account-avatar[hidden] {
  display: none !important;
}

.chat-account-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.chat-account-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-account-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.chat-account-chevron {
  flex: 0 0 auto;
  font-size: 18px;
  color: var(--text-muted);
}

/* ── Main workspace ───────────────────────────────────────────────────── */

.chat-workspace {
  position: relative;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-app);
  overflow: visible;
}

.chat-stage {
  flex: 1;
  min-height: 0;
  background: var(--bg-app);
}

.chat-main-panel {
  flex: 1;
  min-width: 0;
  min-height: 0;
  background: var(--bg-app);
}

@media (min-width: 901px) {
  .chat-app-shell #chat-content {
    --chat-column-max: 830px;
    --chat-column-pad: max(14px, calc((100% - var(--chat-column-max)) / 2));
    align-items: stretch;
  }

  .chat-app-shell #chat-messages,
  .chat-app-shell .chat-composer-wrap,
  .chat-app-shell #typing-indicator {
    width: 100%;
    max-width: none;
    box-sizing: border-box;
    padding-left: var(--chat-column-pad);
    padding-right: var(--chat-column-pad);
  }

  .chat-app-shell #chat-messages {
    /* Clear the floating top clusters so the first message never hides
       beneath them. */
    padding-top: 56px;
    padding-bottom: 14px;
  }

  .chat-app-shell #typing-indicator {
    margin-left: 0;
    margin-right: 0;
  }

  .chat-app-shell .chat-composer-wrap {
    padding-bottom: 16px;
  }
}


/* Floating chrome clusters — the workspace has no navbar, so these hover in
   the top corners and the conversation runs the full viewport height. */
.chat-float {
  position: absolute;
  top: 10px;
  z-index: 55;
  display: flex;
  align-items: center;
  gap: 6px;
}

.chat-float-left {
  left: 10px;
}

.chat-float-right {
  right: 12px;
}

/* Icon-only members of the floating clusters (daily brief sun, etc.). */
.chat-float-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--btn-radius);
  background: color-mix(in srgb, var(--bg-app) 78%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.chat-float-icon-btn:hover {
  color: var(--text);
  background: var(--hover-fill-strong);
  border-color: var(--line-strong);
}

.chat-float-icon-btn:active {
  background: rgba(var(--on-rgb), 0.14);
}

.chat-float-icon-btn .material-symbols-rounded {
  font-size: 18px;
}

.chat-nav-toast {
  position: absolute;
  left: 50%;
  top: 18px;
  transform: translate(-50%, 0) translateY(4px);
  z-index: 60;
  pointer-events: none;
  max-width: min(420px, calc(100% - 120px));
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-strong, var(--panel));
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
  color: var(--text-soft);
  text-align: center;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.chat-nav-toast:not([hidden]) {
  opacity: 1;
  transform: translate(-50%, 0);
}

.chat-nav-toast.warn {
  color: var(--warn-strong-text);
  border-color: color-mix(in srgb, var(--warn-strong-text) 35%, var(--line));
}

.chat-nav-toast.running {
  color: var(--text-muted);
}

.chat-nav-toast[hidden] {
  display: block !important;
  opacity: 0;
  pointer-events: none;
}

.chat-sidebar-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.chat-sidebar-toggle:hover {
  background: var(--hover-fill);
  color: var(--text);
}

.chat-sidebar-toggle:active {
  background: var(--hover-fill-strong);
}

/* Floating over the conversation, the toggle needs its own glass ground. */
.chat-float .chat-sidebar-toggle {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-app) 78%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.chat-float .chat-sidebar-toggle:hover {
  background: var(--hover-fill-strong);
}

.chat-sidebar-toggle[aria-expanded="true"] {
  color: var(--text);
}

.chat-sidebar-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--dur-base) var(--ease-out);
}

.chat-sidebar-toggle[aria-expanded="true"] .chat-sidebar-toggle-icon {
  transform: scaleX(-1);
}

.chat-sidebar-toggle-icon .material-symbols-rounded {
  font-size: 20px;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0;
}

.chat-sidebar-toggle[aria-expanded="true"] .chat-sidebar-toggle-icon .material-symbols-rounded {
  font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0;
}

/* Composer model picker (Claude-style: quiet label + caret, bottom right of
   the composer; the menu opens upward). */
.chat-composer-spacer {
  flex: 1 1 auto;
}

.chat-composer-model-picker {
  position: relative;
  flex-shrink: 0;
  margin-bottom: 2px;
}

.chat-composer-model-picker .mode-pill {
  max-width: 220px;
  min-height: 32px;
  padding: 5px 8px;
  font-size: 13px;
  font-weight: 500;
  border: none;
  border-radius: var(--btn-radius);
  background: transparent;
  color: var(--text-soft, var(--text));
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}

.chat-composer-model-picker .mode-pill:hover {
  background: rgba(var(--on-rgb), 0.06);
  color: var(--text);
}

.chat-composer-model-picker .mode-pill[aria-expanded="true"] {
  background: rgba(var(--on-rgb), 0.08);
  color: var(--text);
}

.chat-composer-model-picker .mode-pill .mode-pill-caret {
  font-size: 16px !important;
  color: var(--text-muted);
}

.chat-composer-model-picker #chat-model-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-composer-model-picker .chat-model-menu {
  top: auto;
  bottom: calc(100% + 10px);
  left: auto;
  right: 0;
}

.chat-app-shell .chat-composer-surface > .chat-composer-field {
  margin: 2px 8px 0 10px;
}

.chat-model-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 200;
  width: min(320px, calc(100vw - 24px));
  max-height: min(420px, calc(100vh - 96px));
  overflow: auto;
  /* Don't chain-scroll the chat behind the menu when the list hits its end. */
  overscroll-behavior: contain;
  padding: 8px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface-strong, var(--panel));
}

.chat-model-menu[hidden] {
  display: none;
}

.chat-model-menu-empty {
  padding: 12px 14px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-muted);
}

.chat-model-menu-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chat-model-option {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: 12px;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: background var(--btn-transition) var(--ease-out);
}

.chat-model-option-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  flex-shrink: 0;
}

.chat-model-option-icon .model-provider-icon {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  object-fit: contain;
}

.chat-model-option-icon .material-symbols-rounded {
  font-size: 16px;
  color: var(--text-muted);
}

.chat-model-option:hover {
  background: rgba(var(--on-rgb), 0.05);
}

.chat-model-option.active {
  background: rgba(var(--accent-rgb), 0.1);
}

.chat-model-option-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.chat-model-option-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.chat-model-option-tagline {
  font-size: 11px;
  line-height: 1.35;
  color: var(--text-muted);
}

.chat-model-menu-divider {
  height: 1px;
  margin: 8px 4px;
  background: var(--line);
}

.chat-model-effort-section {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 2px 0 6px;
}

.chat-model-effort-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 4px 12px 0;
}

.chat-model-effort-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.chat-model-effort-value {
  font-weight: 600;
}

.chat-model-effort-help {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: help;
  transition: color var(--dur-base) var(--ease-out);
}

.chat-model-effort-help:hover {
  color: var(--text-soft);
}

.chat-model-effort-help svg {
  width: 18px;
  height: 18px;
}

.chat-model-effort-labels {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 0;
  font-size: 11px;
  color: var(--text-muted);
}

.chat-model-effort-slider {
  --value-pct: 0;
  --effort-thumb: 36px;
  --effort-track-inset: 18px;
  --effort-track-bg: var(--surface-soft);
  --effort-fill-bg: var(--line-strong);
  --effort-thumb-bg: var(--text-muted);
  --effort-tick-bg: rgb(52, 52, 52);
  position: relative;
  height: 36px;
  margin: 0 12px 4px;
  display: flex;
  align-items: center;
}

[data-theme="light"] .chat-model-effort-slider {
  --effort-tick-bg: rgb(148, 148, 148);
}

.chat-model-effort-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 3;
}

.chat-model-effort-track {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  overflow: hidden;
  background: var(--effort-track-bg);
  border: none;
  z-index: 1;
}

.chat-model-effort-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: calc(
    (var(--value-pct) * (100% - var(--effort-thumb)) / 100) + (var(--effort-thumb) / 2)
  );
  background: var(--effort-fill-bg);
  transition: width var(--dur-slow) cubic-bezier(0.25, 0.8, 0.25, 1);
}

.chat-model-effort-ticks {
  position: absolute;
  left: var(--effort-track-inset);
  right: var(--effort-track-inset);
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 2;
  pointer-events: none;
}

.chat-model-effort-tick {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--effort-tick-bg);
  flex-shrink: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}

.chat-model-effort-tick.active {
  opacity: 0;
}

.chat-model-effort-thumb {
  position: absolute;
  top: 0;
  bottom: 0;
  width: var(--effort-thumb);
  border-radius: 999px;
  background: var(--effort-thumb-bg);
  border: none;
  z-index: 2;
  pointer-events: none;
  left: calc(var(--value-pct) * (100% - var(--effort-thumb)) / 100);
  transition:
    left var(--dur-slow) cubic-bezier(0.25, 0.8, 0.25, 1),
    transform var(--dur-fast) var(--ease-out);
}

.chat-model-effort-slider:active .chat-model-effort-thumb {
  transform: scaleX(0.96) scaleY(0.97);
}

.chat-model-effort-input:focus-visible ~ .chat-model-effort-thumb {
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.35);
}

/* Keep top-right actions inline — never use the web builder drawer pattern */

.chat-nav-chip {
  min-height: 36px;
}

.chat-nav-chip-text {
  min-width: 0;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-nav-chip .material-symbols-rounded {
  font-size: 15px;
  line-height: 1;
}

.chat-nav-chip[hidden] {
  display: none !important;
}

.chat-nav-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--btn-radius);
  background: var(--surface-soft, var(--panel));
  color: var(--text-soft);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  text-decoration: none;
  box-sizing: border-box;
}

.chat-nav-icon-btn:hover {
  color: var(--text);
  background: rgba(var(--on-rgb), 0.06);
  text-decoration: none;
}

.chat-nav-icon-btn .material-symbols-rounded {
  font-size: 18px;
}

.chat-mode-wrap {
  position: relative;
}

.chat-intent-icon {
  font-size: 16px;
}

.message-open-project {
  margin-top: 10px;
}

.message-build-cta {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-top: 10px;
  padding: 16px 18px;
  border: 1px solid rgba(var(--accent-rgb), 0.28);
  border-radius: 14px;
  background: transparent;
  max-width: 100%;
}

.message-build-cta-icon {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  background: transparent;
  color: var(--accent-strong-text, var(--accent));
}

.message-build-cta-icon .material-symbols-rounded {
  font-size: 22px;
}

.message-build-cta-body {
  flex: 1 1 auto;
  min-width: 0;
}

.message-build-cta-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}

.message-build-cta-desc {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--text-muted);
}

.message-build-cta-btn {
  flex: 0 0 auto;
  align-self: center;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: none;
  border-radius: var(--btn-radius);
  background: var(--accent-strong, var(--accent));
  color: var(--accent-on);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}

.message-build-cta-btn .material-symbols-rounded {
  font-size: 18px;
}

.message-build-cta-btn:hover {
  opacity: 0.92;
}

@media (max-width: 640px) {
  .message-build-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .message-build-cta-btn {
    align-self: stretch;
    justify-content: center;
  }
}

.chat-app-shell .message {
  font-size: 16px;
  line-height: 1.5;
}

.chat-app-shell .message.user {
  font-size: 16px;
  padding: 10px 14px;
  background: var(--message-user-bg);
  border: none;
  border-radius: 12px;
  /* Hug the text rather than the column, so a prompt reads as a sent bubble.
     Overrides the shared `.message { width: 100% }`; .message-row.user is
     already align-items:flex-end, which pushes the hugged box to the right. */
  width: fit-content;
  max-width: 78%;
}

/* The bubble is white-space: pre-wrap, so the newlines marked emits between
   blocks already render as the gap between paragraphs. Default <p> margins
   would stack on top of that and make a one-line prompt three lines tall. */
.chat-app-shell .message.user p {
  margin: 0;
}

.chat-app-shell .message.assistant {
  line-height: 1.72;
}

/* Streaming reveal: each freshly revealed chunk is wrapped in .chat-stream-fade
   by chat-ui.js, which drives opacity + blur from the chunk's age every frame
   (JS-driven, so the fade survives the per-frame markdown re-render). We only
   smooth the per-frame opacity steps here; reduced-motion is handled in JS. */
.chat-app-shell .message.assistant .chat-stream-fade {
  display: inline;
}

/* Tables: full chat column width; scroll only when many columns need it */
.chat-app-shell .message .table-wrap {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.chat-app-shell .message .table-wrap table {
  width: 100%;
}

@media (min-width: 901px) {
  .chat-app-shell .message-row.assistant .table-wrap {
    width: calc(100% + 2 * var(--chat-column-pad, 14px));
    max-width: calc(100% + 2 * var(--chat-column-pad, 14px));
    margin-left: calc(-1 * var(--chat-column-pad, 14px));
    margin-right: calc(-1 * var(--chat-column-pad, 14px));
  }
}

.chat-app-shell .message-row.assistant .chat-activity-panel + .message {
  margin-top: 0;
}

.chat-app-shell .message-meta {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  transition: opacity var(--dur-fast) var(--ease-out);
}

@media (hover: hover) {
  .chat-app-shell .message-row .message-meta {
    opacity: 0;
    pointer-events: none;
  }

  .chat-app-shell .message-row:hover .message-meta,
  .chat-app-shell .message-row:focus-within .message-meta {
    opacity: 1;
    pointer-events: auto;
  }
}

.chat-app-shell .message-footer {
  gap: 8px;
}

.chat-app-shell .message-row.user .message-footer {
  justify-content: flex-end;
}

.message-open-project-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--btn-radius);
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent-strong-text, var(--accent));
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--dur-base) var(--ease-out);
}

.message-open-project-btn:hover {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  text-decoration: none;
}

.chat-composer-form {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex: 1;
  min-width: 0;
  width: 100%;
}

.chat-composer-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.chat-composer-controls[hidden],
.chat-model-picker[hidden],
#chat-build-toggle-wrap[hidden] {
  display: none !important;
}

.chat-model-picker {
  position: relative;
}

#chat-build-toggle[data-state="on"] {
  border-color: rgba(var(--focus-rgb), 0.55);
  background: rgba(var(--focus-rgb), 0.12);
  color: var(--text-accent-soft);
}

#chat-build-toggle[data-state="on"] .mode-pill-icon {
  color: var(--text-accent-soft);
}

#chat-build-toggle[data-state="off"] {
  opacity: 0.85;
}

.chat-model-picker .mode-menu {
  min-width: 200px;
  max-height: min(280px, 40vh);
  overflow-y: auto;
}

.chat-model-picker .mode-menu-item .model-hint {
  font-style: normal;
  opacity: 0.65;
  font-size: 11px;
}

.chat-model-picker .model-provider-icon {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  object-fit: contain;
  flex-shrink: 0;
}

#typing-indicator {
  display: none;
  align-items: center;
  gap: 10px;
  width: fit-content;
  margin: 6px 14px 12px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--surface-soft, var(--panel));
  overflow: visible;
}

#typing-indicator:not([hidden]):not(:empty) {
  display: flex;
}

#typing-indicator .loader-wrap {
  flex-shrink: 0;
}

.loader-wrap {
  min-width: 24px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  overflow: visible;
  flex-shrink: 0;
}

/* Three real dot elements (not a single box-shadow element) so the indicator
   can never render as "2 dots" from clipping, and stays visible in every
   container it appears in. Colour is inherited (currentColor) so it adapts to
   both themes automatically. */
.loader-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.3;
  animation: loader-dot-bounce 1s ease-in-out infinite;
}

.loader-dot:nth-child(1) { animation-delay: -0.32s; }
.loader-dot:nth-child(2) { animation-delay: -0.16s; }
.loader-dot:nth-child(3) { animation-delay: 0s; }

/* Fallback: any legacy single `.loader` element still renders as one pulsing
   dot rather than a broken/clipped shape. */
.loader {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  animation: loader-dot-bounce 1s ease-in-out infinite;
}

@keyframes loader-dot-bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.3; }
  40% { transform: translateY(-3px); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .loader-dot,
  .loader {
    animation: loader-dot-fade 1.4s ease-in-out infinite;
  }
}

@keyframes loader-dot-fade {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* Interactive flashcard decks (rendered from a ```flashcards code block) */
.jf-flashcards {
  margin: 12px 0;
  max-width: 460px;
}
.jf-fc-card {
  display: none;
}
.jf-fc-card.is-active {
  display: block;
}
.jf-fc-face {
  display: none;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  min-height: 84px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.jf-fc-card:not(.is-flipped) .jf-fc-front {
  display: flex;
}
.jf-fc-card.is-flipped .jf-fc-back {
  display: flex;
}
.jf-fc-face:hover {
  border-color: var(--accent);
}
.jf-fc-back {
  background: rgba(var(--accent-rgb), 0.09);
}
.jf-fc-tag {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.jf-fc-text {
  font-size: 15px;
  line-height: 1.45;
  color: var(--text);
}
.jf-fc-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}
.jf-fc-progress {
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  min-width: 52px;
  text-align: center;
}
.jf-fc-btn {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: var(--btn-radius);
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 12px;
  transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.jf-fc-btn:hover {
  background: var(--hover-fill-strong);
  border-color: var(--accent);
}
.jf-fc-shuffle {
  margin-left: auto;
}
.jf-fc-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

.chat-composer-form #send-button.stop-mode {
  background: var(--danger);
  color: #fff;
}

.chat-composer-form #send-button.stop-mode:hover {
  background: var(--stop);
}

.chat-empty-state h1 {
  font-family: var(--font-display);
  font-weight: var(--font-display-weight);
  font-size: clamp(28px, 4.5vw, 38px);
  letter-spacing: var(--font-display-tracking);
  line-height: 1.12;
  text-wrap: balance;
  margin: 0 0 8px;
  color: var(--text);
}

.chat-empty-state p {
  margin: 0 auto 20px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.5;
  text-wrap: balance;
  color: var(--text-muted);
}

.chat-starter-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  max-width: 640px;
  margin: 0 auto;
}

.chat-starter-chip {
  line-height: 1.3;
}

.chat-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 48px 16px 40px;
  width: 100%;
  box-sizing: border-box;
}

.chat-projects-card {
  width: min(640px, calc(100vw - 28px));
  max-height: min(80vh, 720px);
}

.chat-projects-card .settings-panel {
  overflow-y: auto;
}

.chat-projects-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-project-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}

.chat-project-meta {
  min-width: 0;
  flex: 1;
}

.chat-project-meta .chat-project-rename-input {
  width: 100%;
  margin-bottom: 4px;
}

.chat-project-title-row {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
  margin-bottom: 4px;
}

.chat-project-title {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-project-rename-btn {
  opacity: 0.55;
  transition: opacity var(--dur-base) var(--ease-out);
}

.chat-project-title-row:hover .chat-project-rename-btn,
.chat-project-title-row:focus-within .chat-project-rename-btn {
  opacity: 1;
}

.chat-project-sub {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.chat-project-actions .settings-action-button {
  padding: 6px 10px;
  font-size: 12px;
  text-decoration: none;
}

.chat-account-modal-foot {
  flex: 0 0 auto;
  padding: 12px 16px 16px;
  border-top: none;
  display: flex;
  justify-content: flex-end;
}

/* Above chat navbar, sidebar, and builder drawer */
#chat-account-modal,
#chat-projects-modal {
  z-index: var(--z-modal);
}

.chat-account-card {
  width: min(880px, calc(100vw - 24px));
  max-width: calc(100vw - 24px);
  height: min(640px, calc(100dvh - 32px));
  max-height: calc(100dvh - 32px);
  background: var(--surface-strong);
  color: var(--text);
}

.clerk-user-profile {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: hidden;
  background: transparent;
  color: var(--text);
}

/* Clerk UserProfile — fit panel width, no horizontal scroll */
.clerk-user-profile :is(
  .cl-rootBox,
  .cl-card,
  .cl-cardBox,
  .cl-navbar,
  .cl-navbarMobileMenuRow,
  .cl-scrollBox,
  .cl-pageScrollBox,
  .cl-page,
  .cl-profilePage,
  .cl-profileSection,
  .cl-profileSectionContent
) {
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.clerk-user-profile :is(.cl-navbar, .cl-pageScrollBox, .cl-scrollBox, .cl-page) {
  overflow-x: hidden !important;
}

.chat-auth-card {
  width: min(420px, calc(100vw - 28px));
}

.chat-auth-error {
  color: var(--warn-strong-text);
  font-size: 13px;
  margin: 0 0 12px;
}

/* ── Mobile sidebar overlay ───────────────────────────────────────────── */

@media (max-width: 768px) {
  .chat-sidebar-backdrop {
    display: block;
  }

  .chat-history-panel {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    flex: none;
    width: min(288px, 88vw);
    max-width: min(288px, 88vw);
    transform: translateX(-105%);
  }

  .chat-app-shell.sidebar-open .chat-history-panel {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
    flex: none;
    width: min(288px, 88vw);
  }

  .chat-app-shell:not(.sidebar-open) .chat-history-panel {
    transform: translateX(-105%);
    width: min(288px, 88vw);
    flex: none;
  }

  .chat-nav-chip-text {
    display: none;
  }

  .chat-nav-chip {
    --btn-padding-x: 9px;
  }
}

@media (max-width: 720px) {
  .chat-account-card {
    width: 100%;
    max-width: 100%;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
  }
}

@media (max-width: 480px) {
}

/* ── Builder slide-in panel (from right) ─────────────────────────────── */

.builder-drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0, 0, 0, 0.42);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease-out);
}

.builder-drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.builder-drawer {
  position: fixed;
  inset: 0;
  z-index: 510;
  width: 100vw;
  height: 100vh;
  max-width: none;
  background: var(--bg-app);
  border: none;
  box-shadow: none;
  transform: translateX(100%);
  transition: transform var(--dur-slow) cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.builder-drawer.open {
  transform: translateX(0);
}

.builder-drawer-frame {
  flex: 1;
  width: 100%;
  height: 100%;
  border: 0;
  background: var(--bg-app);
}

@media (prefers-reduced-motion: reduce) {
  .chat-history-panel,
  .chat-sidebar-backdrop,
  .builder-drawer,
  .builder-drawer-backdrop,
  .chat-nav-toast {
    transition-duration: 0.01ms;
  }
}

/* ── Web search tool steps (chat) ─────────────────────────────────────── */

.message-row.assistant .chat-tool-steps-card {
  margin: 0 0 10px;
  width: 100%;
  max-width: 100%;
  background: var(--surface-soft, var(--panel));
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
}

.chat-tool-steps-list {
  gap: 8px;
}

.chat-web-search-step {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-app, var(--panel));
}

.chat-web-search-step-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 8px;
}

.chat-web-search-step-head .live-step-icon {
  color: var(--accent);
  font-size: 16px;
  line-height: 1;
}

.chat-web-search-step-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

.chat-web-search-step-query {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono, ui-monospace, monospace);
}

.chat-web-search-step-meta {
  font-size: 11px;
  color: var(--text-muted);
}

.chat-web-search-sources {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chat-web-search-sources li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  line-height: 1.35;
}

.chat-web-search-sources a {
  color: var(--accent);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: min(100%, 420px);
}

.chat-web-search-sources a:hover {
  text-decoration: none;
}

.chat-web-search-source-host {
  flex-shrink: 0;
  font-size: 10px;
  color: var(--text-muted);
}

.chat-web-search-provider-badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--accent);
}

.chat-web-search-categories {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono, ui-monospace, monospace);
}

.chat-web-search-pages {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-web-search-page {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft, var(--panel));
}

.chat-web-search-page-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 8px;
}

.chat-web-search-page-pos {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 1.2em;
}

.chat-web-search-page-head a {
  color: var(--accent);
  text-decoration: none;
  font-size: 12px;
  font-weight: 500;
}

.chat-web-search-page-head a:hover {
  text-decoration: none;
}

.chat-web-search-page-category,
.chat-web-search-page-scraped,
.chat-web-search-page-pending {
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 4px;
  text-transform: lowercase;
}

.chat-web-search-page-category {
  background: color-mix(in srgb, var(--text-muted) 12%, transparent);
  color: var(--text-muted);
}

.chat-web-search-page-scraped {
  background: var(--success-pill-bg);
  color: var(--success-text);
}

.chat-web-search-page-pending {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
}

.chat-web-search-page-desc {
  margin-top: 4px;
  font-size: 11px;
  line-height: 1.4;
  color: var(--text-muted);
}

.chat-web-search-page-host {
  margin-top: 2px;
  font-size: 10px;
  color: var(--text-muted);
}

.chat-finance-metrics {
  margin-top: 6px;
  padding: 8px 10px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  font-size: 11px;
  line-height: 1.45;
  color: var(--text-muted);
}

.chat-clarification-card {
  margin-top: 8px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-soft, var(--panel));
  max-width: 640px;
}

.chat-clarification-intro {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--text-muted);
}

.chat-clarification-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: var(--font-display-weight);
  margin-bottom: 12px;
}

.chat-clarification-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-clarification-question {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

.chat-clarification-question legend {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  padding: 0;
  color: var(--text);
}

.chat-clarification-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chat-clarification-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 13px;
  line-height: 1.35;
  color: var(--text);
  transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.chat-clarification-option:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.chat-clarification-option:has(input:checked) {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.chat-clarification-option input[type="radio"] {
  flex-shrink: 0;
  accent-color: var(--accent);
}

.chat-clarification-option-other {
  flex-wrap: wrap;
  align-items: center;
}

.chat-clarification-other-input {
  flex: 1 1 160px;
  min-width: 120px;
  margin-left: 4px;
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface, var(--bg));
  color: var(--text);
  font-size: 12px;
}

.chat-clarification-other-input:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent);
  outline-offset: 1px;
}

.chat-clarification-error {
  font-size: 12px;
  color: var(--danger);
}

.chat-clarification-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 4px;
}

.chat-clarification-submit {
  padding: 8px 16px;
  border-radius: 999px;
  border: none;
  background: var(--btn-primary-bg);
  color: var(--btn-primary-color);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.chat-clarification-submit:hover:not(:disabled) {
  background: var(--btn-primary-bg-hover);
}

.chat-clarification-submit:active:not(:disabled) {
  transform: scale(0.98);
}

.chat-clarification-submit:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Answered clarification card — stays visible after submit / reload */
.chat-clarification-card-answered .chat-clarification-option {
  cursor: default;
}

.chat-clarification-card-answered .chat-clarification-option:hover {
  background: transparent;
}

.chat-clarification-card-answered .chat-clarification-option:not(.is-selected) {
  opacity: 0.5;
}

.chat-clarification-card-answered .chat-clarification-option.is-selected,
.chat-clarification-card-answered .chat-clarification-option.is-selected:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  font-weight: 600;
}

.chat-clarification-card-answered .chat-clarification-other-input:disabled {
  border-color: transparent;
  background: transparent;
  color: var(--text);
  opacity: 1;
  font-weight: 600;
}

.chat-clarification-answered-note {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}

.chat-clarification-answered-note .material-symbols-rounded {
  font-size: 16px;
}

/* User reply card with the picked answers */
.chat-clarification-answers {
  max-width: min(520px, 100%);
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--message-user-bg);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
}

.chat-clarification-answers-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.chat-clarification-answers-header .material-symbols-rounded {
  font-size: 16px;
  color: var(--accent);
}

.chat-clarification-answers-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-clarification-answers-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chat-clarification-answers-question {
  font-size: 12px;
  line-height: 1.4;
  color: var(--text-muted);
}

.chat-clarification-answers-answer {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

.chat-clarification-answers-answer .material-symbols-rounded {
  font-size: 16px;
  color: var(--accent);
  flex-shrink: 0;
}

.message.assistant a {
  color: var(--accent);
  text-decoration: none;
}

.message.assistant a:hover {
  text-decoration: underline;
}

.message.assistant .chat-cite-missing {
  display: inline-block;
  margin-left: 0.35em;
  padding: 1px 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-muted) 16%, transparent);
  color: var(--text-muted);
  cursor: help;
  font-size: 11px;
  font-weight: 600;
  vertical-align: baseline;
}

.message.assistant .chat-cite-attribution {
  display: inline-block;
  margin-left: 0.35em;
  padding: 2px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-muted) 18%, transparent);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.35;
  vertical-align: baseline;
  white-space: nowrap;
  cursor: help;
}

.message.assistant a.chat-cite-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 0.35em;
  padding: 2px 8px 2px 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-muted) 18%, transparent);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.35;
  vertical-align: baseline;
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}

.message.assistant a.chat-cite-pill:hover {
  background: color-mix(in srgb, var(--text-muted) 28%, transparent);
  color: var(--text);
  text-decoration: none;
}

.message.assistant .chat-cite-pill-icon {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

.message.assistant .chat-cite-pill-label {
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Sources panel (Perplexity-style) ───────────────────────────────── */

.chat-sources-panel {
  width: 100%;
  max-width: 100%;
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-soft, var(--panel));
  overflow: hidden;
}

/* Live indicator — pulsing accent dot ahead of the panel title */
.chat-sources-panel-live .chat-sources-title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: middle;
  animation: chatLivePulse 1.6s var(--ease-in-out) infinite;
}

@keyframes chatLivePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}

@media (prefers-reduced-motion: reduce) {
  .chat-sources-panel-live .chat-sources-title::before {
    animation: none;
  }
}

.chat-sources-header {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  text-align: left;
  transition: background var(--dur-base) var(--ease-out);
}

.chat-sources-header:hover {
  background: color-mix(in srgb, var(--text-muted) 8%, transparent);
}

.chat-sources-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.chat-sources-status {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.chat-sources-chevron {
  margin-left: auto;
  font-size: 18px;
  color: var(--text-muted);
  transition: transform var(--dur-fast) var(--ease-out);
}

.chat-panel-open .chat-sources-chevron,
.chat-panel-open .chat-activity-chevron {
  transform: rotate(180deg);
}

.chat-sources-list[hidden],
.chat-activity-body[hidden] {
  display: none !important;
}

/* ── Sources drawer (⋯ menu → "View sources"). The JS mounts these elements
   and toggles .is-open; without this block the drawer rendered as an
   unstyled <aside> at the bottom of the page — i.e. "doesn't open". ── */
.chat-sources-drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 240;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.chat-sources-drawer-backdrop.is-open {
  opacity: 1;
}

.chat-sources-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 241;
  width: min(420px, 92vw);
  display: flex;
  flex-direction: column;
  background: var(--panel, var(--surface, #17171b));
  border-left: 1px solid var(--line, rgba(128, 128, 128, 0.25));
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.25);
  transform: translateX(100%);
  transition: transform 0.22s var(--ease-out, ease);
}

.chat-sources-drawer.is-open {
  transform: translateX(0);
}

.chat-sources-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line, rgba(128, 128, 128, 0.25));
  color: var(--text, inherit);
  font-size: 14px;
}

.chat-sources-drawer-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: var(--btn-radius, 8px);
  background: transparent;
  color: var(--text-muted, inherit);
  cursor: pointer;
}

.chat-sources-drawer-close:hover {
  background: var(--hover-fill, rgba(128, 128, 128, 0.12));
  color: var(--text, inherit);
}

.chat-sources-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
}

.chat-sources-drawer-body .chat-sources-list {
  border-top: none;
}

@media (prefers-reduced-motion: reduce) {
  .chat-sources-drawer,
  .chat-sources-drawer-backdrop {
    transition: none;
  }
}

.chat-sources-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.chat-sources-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  transition: background var(--dur-base) var(--ease-out);
}

.chat-sources-item:last-child {
  border-bottom: 0;
}

.chat-sources-item:hover {
  background: color-mix(in srgb, var(--text-muted) 8%, transparent);
  text-decoration: none;
}

.chat-sources-favicon {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  border-radius: 4px;
  flex-shrink: 0;
}

.chat-sources-item-body {
  min-width: 0;
  flex: 1;
}

.chat-sources-domain {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.chat-sources-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}

.chat-sources-snippet {
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

#chat-live-tool-steps.chat-sources-panel {
  margin-bottom: 8px;
}

.chat-stopped-notice {
  margin: 8px 0 4px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px dashed color-mix(in srgb, var(--text-muted) 35%, transparent);
  font-size: 12px;
  color: var(--text-muted);
}

/* ── Thinking + tool steps (Ask chat) ──────────────────────────────────── */

.chat-activity-panel {
  width: 100%;
  max-width: 100%;
  margin: 0 0 4px;
  border: none;
  border-radius: 0;
  background: transparent;
  overflow: visible;
}

.chat-activity-header {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: auto;
  padding: 2px 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  text-align: left;
  transition: color var(--dur-base) var(--ease-out);
}

.chat-activity-header:hover {
  background: transparent;
  color: var(--text-soft);
}

.chat-activity-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

/* Shimmer on the live "Thinking" label: a bright spark sweeps across the text
   left → right on loop while the model reasons; it stops (settled class) once
   the actual answer starts streaming. */
.chat-activity-panel-live:not(.chat-activity-settled) .chat-activity-title {
  background: linear-gradient(
    90deg,
    var(--text-muted) 0%,
    var(--text-muted) 38%,
    var(--text) 50%,
    var(--text-muted) 62%,
    var(--text-muted) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: chat-thinking-shimmer 1.6s linear infinite;
}

@keyframes chat-thinking-shimmer {
  from {
    background-position: 175% 0;
  }
  to {
    background-position: -75% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .chat-activity-panel-live:not(.chat-activity-settled) .chat-activity-title {
    animation: none;
    background: none;
    color: var(--text);
    -webkit-text-fill-color: currentColor;
  }
}

.chat-activity-chevron {
  margin-left: 0;
  font-size: 18px;
  color: var(--text-muted);
  transition: transform var(--dur-fast) var(--ease-out);
}

.chat-activity-body {
  border-top: none;
  padding: 6px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 100%;
}

.chat-activity-steps {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.chat-thinking-wrap {
  position: relative;
  width: 100%;
}

.chat-thinking-content {
  width: 100%;
  box-sizing: border-box;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-muted);
  max-height: 220px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  padding-bottom: 8px;
}

.chat-activity-panel-live .chat-thinking-content {
  min-height: 1.2em;
  color: var(--text);
}

.chat-thinking-content p {
  margin: 0 0 0.6em;
}

.chat-thinking-content p:last-child {
  margin-bottom: 0;
}

.chat-tool-step-row.live-step {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 2px 0;
  color: var(--text-muted);
  line-height: 1.4;
}

.chat-tool-step-row .live-step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  color: var(--accent);
}

.chat-tool-step-row .chat-step-check {
  font-size: 13px;
  line-height: 1;
}

.chat-tool-step-row .chat-step-error {
  color: var(--danger);
}

.chat-tool-step-row .live-step-name {
  font-weight: 600;
  color: var(--accent);
  font-size: 12px;
}

.chat-tool-step-row.done .live-step-name {
  color: var(--text);
  font-weight: 500;
}

.chat-tool-step-row .live-step-info {
  font-size: 11px;
  opacity: 0.75;
  word-break: break-word;
}

/* Unified loading indicator: the running step's label shimmers left→right
   (same treatment as the live "Thinking" header) instead of a dot/bubble
   loader. The icon slot stays empty so rows keep their left alignment. */
.chat-tool-step-row.running .live-step-name,
#thinking-text.is-loading {
  background: linear-gradient(
    90deg,
    var(--text-muted) 0%,
    var(--text-muted) 38%,
    var(--text) 50%,
    var(--text-muted) 62%,
    var(--text-muted) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: chat-thinking-shimmer 1.6s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .chat-tool-step-row.running .live-step-name,
  #thinking-text.is-loading {
    animation: none;
    background: none;
    color: var(--text-muted);
    -webkit-text-fill-color: currentColor;
  }
}

.chat-live-tools-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  margin-bottom: 10px;
}

@keyframes chat-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

body.builder-drawer-open {
  overflow: hidden;
}

body.builder-drawer-open .chat-nav-actions {
  display: none !important;
}

/* ── Build plan card + modal ─────────────────────────────────────────── */

.message-plan-cta {
  margin-top: 10px;
}

.message-plan-cta-btn {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 12px;
  row-gap: 2px;
  align-items: start;
  width: 100%;
  padding: 12px 14px;
  border: var(--btn-secondary-border-width) solid rgba(var(--accent-rgb), 0.28);
  /* Card radius, not the pill --btn-radius: a two-line card in a full pill
     reads as a blob. Matches the 12px card language elsewhere in chat. */
  border-radius: var(--radius-md, 12px);
  background: transparent;
  color: inherit;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    border-color var(--btn-transition) var(--ease-out),
    background var(--btn-transition) var(--ease-out);
}

.message-plan-cta-btn:hover {
  border-color: rgba(var(--accent-rgb), 0.45);
  background: rgba(var(--accent-rgb), 0.04);
}

.message-plan-cta-icon {
  grid-column: 1;
  grid-row: 1;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-strong-text, var(--accent));
}

.message-plan-cta-icon .material-symbols-rounded {
  font-size: 22px;
}

.message-plan-cta-body {
  display: contents;
}

.message-plan-cta-title {
  grid-column: 2;
  grid-row: 1;
  font-size: var(--btn-font-size-sm);
  font-weight: var(--btn-font-weight);
  line-height: 1.35;
  color: var(--text);
  text-align: left;
}

.message-plan-cta-foot {
  grid-column: 1 / -1;
  grid-row: 2;
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--text-muted);
  text-align: left;
}

.plan-modal-card {
  display: flex;
  flex-direction: column;
  width: min(920px, calc(100vw - 24px));
  max-height: min(88vh, 900px);
  padding: 0;
  overflow: hidden;
}

.plan-modal-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: none;
}

.plan-modal-tabs {
  display: inline-flex;
  gap: 6px;
  flex: 1 1 auto;
  min-width: 0;
}

.plan-modal-tab {
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.plan-modal-tab:hover:not(.active) {
  background: var(--hover-fill);
  color: var(--text);
}

.plan-modal-tab.active {
  border-color: rgba(var(--accent-rgb), 0.35);
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--text);
}

.plan-modal-toolbar-actions {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.plan-modal-toolbar .settings-modal-close {
  flex-shrink: 0;
}

.plan-modal-model-select {
  height: 30px;
  max-width: 190px;
  padding: 0 8px;
  border-radius: var(--radius-pill, 999px);
  border: 1px solid var(--line);
  background: var(--surface-2, var(--panel));
  color: var(--text);
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
}
.plan-modal-model-select[hidden] {
  display: none;
}
.plan-modal-model-select:hover {
  border-color: var(--line-strong);
}

.plan-modal-approve-btn .material-symbols-rounded,
.plan-modal-secondary-btn .material-symbols-rounded {
  font-size: 18px;
}

.plan-modal-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0 18px 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.plan-modal-status {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.plan-modal-status[data-status="approved"] {
  border-color: rgba(var(--green-rgb), 0.4);
  background: var(--success-pill-bg);
  color: var(--success-text);
}

.plan-modal-status[data-status="draft"] {
  border-color: color-mix(in srgb, var(--warn-text) 40%, transparent);
  background: var(--warn-pill-bg);
  color: var(--warn-text);
}

.plan-modal-status[data-status="plan-updated"] {
  border-color: color-mix(in srgb, var(--accent-warm) 40%, transparent);
  background: color-mix(in srgb, var(--accent-warm) 10%, transparent);
  color: var(--accent-warm);
}

#chat-plan-btn.plan-has-notify,
#builder-plan-btn.plan-has-notify {
  position: relative;
}

#chat-plan-btn.plan-has-notify::after,
#builder-plan-btn.plan-has-notify::after {
  content: "";
  position: absolute;
  top: 5px;
  right: 5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 2px var(--surface-soft, var(--panel));
  pointer-events: none;
}

.plan-modal-output {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 0 18px 18px;
  line-height: 1.55;
}

.plan-modal-output pre {
  margin: 12px 0;
  border-radius: 10px;
  padding: 2px;
  background: var(--panel);
  border: 1px solid var(--border);
  overflow: auto;
}

.plan-modal-output pre code {
  display: block;
  padding: 12px 14px;
  font-family: var(--font-mono, monospace);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre;
  background: transparent;
}

.plan-modal-output .table-wrap {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  margin: 12px 0;
}

.plan-modal-output table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.plan-modal-output th,
.plan-modal-output td {
  white-space: normal;
  overflow-wrap: break-word;
  word-break: break-word;
}

.plan-modal-output th,
.plan-modal-output td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

.plan-modal-output th {
  background: rgba(var(--accent-rgb), 0.08);
  font-weight: 600;
}

.plan-modal-edit {
  flex: 1 1 auto;
  min-height: 280px;
  margin: 0 18px 18px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-mono, monospace);
  font-size: 13px;
  line-height: 1.55;
  resize: vertical;
}

body.plan-modal-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .plan-modal .settings-modal-backdrop {
    background: var(--bg);
  }

  .plan-modal-card {
    width: 100vw;
    max-width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
  }

  .plan-modal-toolbar {
    flex-wrap: wrap;
    gap: 8px;
    padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 10px
      max(12px, env(safe-area-inset-left));
  }

  .plan-modal-toolbar-actions {
    flex: 1 1 100%;
    order: 3;
    gap: 6px;
  }

  .plan-modal-toolbar .settings-modal-close {
    order: 2;
  }

  .plan-modal-tab {
    padding: 7px 12px;
  }

  .plan-modal-edit {
    min-height: 0;
    flex: 1;
    margin-bottom: max(18px, env(safe-area-inset-bottom));
  }
}

/* ── Project presets & customization ─────────────────────────────────────── */

.chat-preset-card,
.chat-customize-card {
  max-width: 720px;
  width: min(720px, calc(100vw - 32px));
}

.chat-preset-card {
  height: auto;
}

.chat-preset-card .settings-panel {
  flex: 0 1 auto;
  gap: 8px;
  padding-bottom: 12px;
  max-height: min(70vh, 640px);
  overflow-y: auto;
}

.project-preset-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.project-preset-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: var(--btn-secondary-border-width) solid var(--btn-secondary-border);
  border-radius: 14px;
  background: var(--btn-secondary-bg);
  color: inherit;
  text-align: left;
  cursor: pointer;
  width: 100%;
  min-height: 82px;
  font-family: var(--btn-font-family);
  transition:
    border-color var(--btn-transition) var(--ease-out),
    background var(--btn-transition) var(--ease-out),
    box-shadow var(--btn-transition) var(--ease-out),
    color var(--btn-transition) var(--ease-out);
}

.project-preset-card:hover {
  background: var(--btn-secondary-bg-hover);
  border-color: var(--btn-secondary-border-hover);
}

.project-preset-card:active {
  background: var(--btn-secondary-bg-active);
}

.project-preset-card:focus-visible {
  outline: none;
  border-color: var(--select-border-focus);
  box-shadow: 0 0 0 3px var(--select-focus-ring);
}

.project-preset-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--hover-fill-strong);
  font-size: 21px;
  color: var(--text-muted);
  transition:
    color var(--btn-transition) var(--ease-out),
    background var(--btn-transition) var(--ease-out);
}

.project-preset-card:hover .project-preset-icon {
  color: var(--text);
  background: rgba(var(--on-rgb), 0.16);
}

.project-preset-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.project-preset-label {
  font-weight: 600;
  font-size: var(--btn-font-size-sm);
  color: var(--text);
  min-width: 0;
}

.project-preset-tagline {
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-muted);
}

.project-preset-card:hover .project-preset-tagline {
  color: var(--text-soft);
}

.project-preset-connectors {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
}

.project-preset-connector {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px 2px 5px;
  border-radius: 999px;
  background: var(--hover-fill-strong);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-muted);
  white-space: nowrap;
}

.project-preset-connector .material-symbols-rounded {
  font-size: 13px;
}

.project-preset-card:hover .project-preset-connector {
  color: var(--text-soft);
  background: rgba(var(--on-rgb), 0.14);
}

.project-preset-card-active {
  border-color: var(--select-border-focus);
  background: var(--btn-secondary-bg-hover);
}

.project-preset-card-active .project-preset-icon,
.project-preset-card-active .project-preset-label {
  color: var(--text);
}

.chat-customize-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-customize-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.chat-customize-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-soft);
}

.chat-customize-field > span:first-child {
  font-weight: 600;
  color: var(--text);
}

.chat-customize-field-full {
  grid-column: 1 / -1;
}

.chat-customize-field input[type="text"],
.chat-customize-field textarea {
  width: 100%;
  padding: 8px 11px;
  min-height: 38px;
  border-radius: 10px;
  border: 1.5px solid var(--input-border, var(--select-border));
  background: var(--input-bg, var(--select-bg));
  color: var(--text);
  font: inherit;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}

.chat-customize-field input[type="text"]:hover,
.chat-customize-field textarea:hover {
  background: var(--select-bg-hover);
}

.chat-customize-field input[type="text"]:focus-visible,
.chat-customize-field textarea:focus-visible {
  border-color: var(--input-border-focus, var(--select-border-focus));
  box-shadow: 0 0 0 3px var(--select-focus-ring);
  outline: none;
}

.chat-customize-field textarea {
  min-height: 96px;
  resize: vertical;
  line-height: 1.45;
}

.chat-customize-field .custom-select__trigger {
  font-size: 0.92rem;
}

.chat-customize-section-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.project-skill-packs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-skill-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px 6px 8px;
  border-radius: 999px;
  border: 1.5px solid var(--select-border);
  background: var(--select-bg);
  color: var(--text-soft);
  font-size: 0.78rem;
  cursor: pointer;
  user-select: none;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
}

.project-skill-chip:hover {
  background: var(--select-bg-hover);
  color: var(--text);
}

.project-skill-chip:has(input:checked) {
  border-color: var(--checkbox-chip-border-checked);
  background: var(--checkbox-chip-bg-checked);
  color: var(--text-accent);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.08);
}

.project-skill-chip input {
  margin: 0;
}

.project-skill-chip .material-symbols-rounded {
  font-size: 16px;
  opacity: 0.85;
}

.project-skill-chip:has(input:checked) .material-symbols-rounded {
  opacity: 1;
}

.chat-customize-check {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-soft);
  cursor: pointer;
  user-select: none;
}

.chat-customize-check:has(input:checked) {
  color: var(--text);
}

.chat-customize-check input {
  margin: 0;
}

.chat-customize-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 4px;
}

@media (max-width: 720px) {
  #chat-preset-modal .settings-modal-backdrop,
  #chat-customize-modal .settings-modal-backdrop {
    background: var(--bg-app);
  }

  .chat-preset-card,
  .chat-customize-card {
    width: 100vw;
    max-width: 100vw;
    height: 100vh;
    height: 100dvh;
    max-height: 100vh;
    max-height: 100dvh;
    border-radius: 0;
    border: none;
  }

  .chat-preset-card .settings-panel,
  .chat-customize-card .settings-panel {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
  }

  .project-preset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .chat-customize-grid {
    grid-template-columns: 1fr;
  }

  .project-preset-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Confirm dialog ───────────────────────────────────────────────────── */
.chat-confirm-overlay {
  position: fixed;
  inset: 0;
  /* one layer above the chat modals */
  z-index: calc(var(--z-modal) + 1000);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: chatConfirmOverlayIn 0.16s ease;
}

.chat-confirm-overlay.chat-confirm-closing {
  animation: chatConfirmOverlayOut 0.15s ease forwards;
}

.chat-confirm-backdrop {
  position: absolute;
  inset: 0;
  background: var(--scrim);
  backdrop-filter: blur(6px);
}

.chat-confirm-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 28px 24px 22px;
  border-radius: 18px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  animation: chatConfirmCardIn 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.chat-confirm-overlay.chat-confirm-closing .chat-confirm-card {
  animation: chatConfirmCardOut 0.14s ease forwards;
}

.chat-confirm-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface-soft);
  color: var(--text-muted);
}

.chat-confirm-icon .material-symbols-rounded {
  font-size: 26px;
}

.chat-confirm-danger .chat-confirm-icon {
  background: rgba(var(--danger-rgb), 0.16);
  color: var(--error-soft-text);
}

.chat-confirm-title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

.chat-confirm-message {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-muted);
}

.chat-confirm-actions {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-top: 8px;
}

.chat-confirm-actions .btn {
  flex: 1;
  justify-content: center;
}

@media (max-width: 480px) {
  .chat-confirm-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .chat-confirm-card {
    max-width: none;
    border-radius: 20px 20px 0 0;
    padding: 26px 20px calc(22px + env(safe-area-inset-bottom, 0px));
    animation: chatConfirmSheetIn 0.24s cubic-bezier(0.2, 0.8, 0.2, 1);
  }

  .chat-confirm-overlay.chat-confirm-closing .chat-confirm-card {
    animation: chatConfirmSheetOut 0.18s ease forwards;
  }

  .chat-confirm-actions {
    flex-direction: column;
  }
}

@keyframes chatConfirmOverlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes chatConfirmOverlayOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes chatConfirmCardIn {
  from { opacity: 0; transform: translateY(8px) scale(0.96); }
  to { opacity: 1; transform: none; }
}

@keyframes chatConfirmCardOut {
  from { opacity: 1; transform: none; }
  to { opacity: 0; transform: translateY(6px) scale(0.98); }
}

@keyframes chatConfirmSheetIn {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes chatConfirmSheetOut {
  from { transform: translateY(0); }
  to { transform: translateY(100%); }
}

@media (prefers-reduced-motion: reduce) {
  .chat-confirm-overlay,
  .chat-confirm-overlay.chat-confirm-closing,
  .chat-confirm-card,
  .chat-confirm-overlay.chat-confirm-closing .chat-confirm-card {
    animation: none;
  }
}



/* ==== Billing: usage pill + upgrade modal (Jomoq design system) ========== */
.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;
}

/* Usage pill in the navbar — matches the app's pill buttons */
.chat-usage-pill {
  display: inline-flex; align-items: center; gap: 5px;
  min-height: 36px;
  padding: 6px 12px; border-radius: var(--btn-radius-pill, 999px);
  border: 1.5px solid var(--btn-secondary-border, var(--border-mild));
  background: var(--btn-secondary-bg, var(--surface-2));
  color: var(--text-soft, var(--text-secondary));
  font-family: var(--font-main);
  font-size: 12px; font-weight: 600; letter-spacing: var(--btn-letter-spacing, .02em);
  cursor: pointer; white-space: nowrap;
  transition: background var(--btn-transition, var(--dur-fast)) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

/* display:inline-flex defeats the `hidden` attribute — restate it. */
.chat-usage-pill[hidden] { display: none; }
.chat-usage-pill .material-symbols-rounded { font-size: 15px; }
.chat-usage-pill:hover {
  background: var(--btn-secondary-bg-hover, var(--surface-soft));
  color: var(--text);
}
.chat-usage-pill:active { transform: scale(.97); }
.chat-usage-pill-pro {
  border-color: transparent;
  color: var(--btn-primary-color);
  background: var(--btn-primary-bg, var(--accent));
}
.chat-usage-pill-warn {
  border-color: transparent;
  color: #111;
  background: linear-gradient(to bottom, var(--grad-warn), var(--accent-warm));
}
.chat-usage-pill-danger {
  border-color: transparent; color: #fff;
  /* Deepen the gradient's lower stop so 12px white label text clears WCAG AA
     (~4.5:1) rather than sitting at the ~3.3:1 the lighter stop gave. */
  background: linear-gradient(to bottom, var(--error-text), #B3241C);
  animation: upgPulse 2.4s ease-in-out infinite;
}
.upg-fineprint {
  margin: 10px 0 0;
  text-align: center;
  font-size: 12px;
  color: var(--text-faint);
}
@keyframes upgPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(var(--danger-rgb), 0); }
  50% { box-shadow: 0 0 0 4px rgba(var(--danger-rgb), .2); }
}
@media (prefers-reduced-motion: reduce) {
  .chat-usage-pill-danger { animation: none; }
}

/* Modal shell */
.chat-upgrade-modal .settings-modal-card.chat-upgrade-card {
  position: relative;
  max-width: 440px; width: 100%;
  padding: 0; overflow: hidden;
}
.chat-upgrade-close {
  position: absolute; top: 12px; right: 12px; z-index: 3; opacity: .6;
  /* Keep the base .settings-modal-close background/color easing alongside opacity */
  transition: opacity var(--dur-base) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.chat-upgrade-close:hover { opacity: 1; }
/* Extra top padding so the first row clears the absolute close button. */
.chat-upgrade-body { padding: 46px 26px 6px; }
.chat-upgrade-foot { padding: 8px 26px 24px; }

/* Scarcity / usage bar */
.upg-scarcity { margin-bottom: 20px; }
.upg-usage-line {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 7px;
}
.upg-usage-tag { font-weight: 700; }
.upg-bar {
  height: 8px; border-radius: 999px;
  background: var(--border-mild); overflow: hidden;
}
.upg-bar-fill {
  height: 100%; border-radius: 999px;
  background: var(--accent);
  transition: width var(--dur-slow) var(--ease-out);
}
.upg-scarcity.is-low .upg-bar-fill { background: linear-gradient(90deg, var(--grad-warn), var(--accent-warm)); }
.upg-scarcity.is-low .upg-usage-tag { color: var(--warn-text, var(--accent-warm)); }
.upg-scarcity.is-blocked .upg-bar-fill { background: linear-gradient(90deg, var(--grad-danger), var(--error-text)); }
.upg-scarcity.is-blocked .upg-usage-tag { color: var(--error-soft-text, var(--error-text)); }

/* Headline */
.upg-head {
  margin: 0 0 6px; font-family: var(--font-display, var(--font-main));
  font-size: 22px; font-weight: 700; letter-spacing: -.01em;
  color: var(--text); line-height: 1.2; text-wrap: balance;
}
.upg-subhead { margin: 0 0 18px; font-size: 14px; line-height: 1.5; color: var(--text-secondary); }

/* Price + anchoring */
.upg-price-row {
  display: flex; align-items: center; gap: 14px; padding: 14px 16px; margin-bottom: 18px;
  border: 1px solid var(--border-mild); border-radius: var(--radius-md, 12px);
  background: var(--accent-fill-subtle, rgba(var(--accent-rgb), .12));
}
.upg-price { display: flex; align-items: baseline; gap: 2px; }
.upg-amt { font-size: 34px; font-weight: 700; color: var(--text); letter-spacing: -.02em; }
.upg-per { font-size: 14px; font-weight: 600; color: var(--text-faint, var(--text-secondary)); }
.upg-anchor { display: flex; flex-direction: column; gap: 2px; }
.upg-anchor-1 { font-size: 13px; font-weight: 600; color: var(--text-soft, var(--text)); }
.upg-anchor-1 s { color: var(--text-faint); }
.upg-anchor-2 { font-size: 12px; color: var(--text-faint); }

/* Feature stack */
.upg-feats { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.upg-feats li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text); line-height: 1.4; }
.upg-feats .material-symbols-rounded { font-size: 19px; color: var(--accent); flex-shrink: 0; margin-top: 1px; }
.upg-feats b { font-weight: 700; }

/* Social proof */
.upg-social { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--text-faint); padding-top: 4px; }
.upg-social .material-symbols-rounded { font-size: 16px; }

/* Already-Pro state */
.upg-pro { text-align: center; padding: 14px 0 6px; }
.upg-pro-badge {
  width: 56px; height: 56px; margin: 0 auto 14px; display: grid; place-items: center;
  border-radius: 50%; color: var(--btn-primary-color);
  background: var(--btn-primary-bg, var(--accent));
  box-shadow: var(--btn-primary-shadow);
}
.upg-pro-badge .material-symbols-rounded { font-size: 30px; }
.upg-pro-renew { margin-top: 12px; font-size: 13px; color: var(--text-faint); }

/* CTA — mirrors the app's primary "lip" button */
.chat-upgrade-cta {
  width: 100%; cursor: pointer; border: none;
  color: var(--btn-primary-color);
  background: var(--btn-primary-bg, var(--accent));
  border-radius: var(--btn-radius, 10px);
  box-shadow: var(--btn-primary-shadow);
  padding: 12px 18px 14px;
  display: flex; flex-direction: column; align-items: center; gap: 1px;
  font-family: var(--font-main);
  transition: background var(--btn-transition, var(--dur-fast)) var(--ease-out), transform var(--btn-transition, var(--dur-fast)) var(--ease-out),
              box-shadow var(--btn-transition, var(--dur-fast)) var(--ease-out);
}
.chat-upgrade-cta:hover { background: var(--btn-primary-bg-hover, var(--accent)); }
.chat-upgrade-cta:active {
  transform: translateY(var(--btn-primary-press-y, 1px));
  box-shadow: var(--btn-primary-shadow-active);
}
.chat-upgrade-cta:disabled { opacity: var(--btn-disabled-opacity); cursor: default; }
.chat-upgrade-cta-main { font-size: 15px; font-weight: var(--btn-font-weight, 600); letter-spacing: var(--btn-letter-spacing, .02em); }
.chat-upgrade-cta-sub { font-size: 12px; font-weight: 500; opacity: .82; }

/* Manage (secondary) */
.chat-upgrade-manage {
  width: 100%; margin-bottom: 8px; cursor: pointer;
  border: var(--btn-secondary-border-width, 1.5px) solid var(--btn-secondary-border, var(--border-mild));
  border-radius: var(--btn-radius, 10px); padding: 10px 18px;
  font-family: var(--font-main); font-size: 14px; font-weight: 600;
  background: var(--btn-secondary-bg, transparent); color: var(--btn-secondary-color, var(--text));
  transition: background var(--dur-base) var(--ease-out);
}
.chat-upgrade-manage:hover { background: var(--btn-secondary-bg-hover, var(--surface-soft)); }

.chat-upgrade-reassure {
  display: flex; align-items: center; justify-content: center; gap: 5px;
  margin: 12px 0 0; font-size: 12px; color: var(--text-faint); text-align: center;
}
.chat-upgrade-reassure .material-symbols-rounded { font-size: 14px; }

@media (max-width: 480px) {
  .chat-upgrade-body { padding: 44px 20px 4px; }
  .chat-upgrade-foot { padding: 8px 20px 20px; }
  .upg-head { font-size: 20px; }
}

/* Inline "out of messages" bar above the composer */
.chat-blocked-bar {
  display: flex; align-items: center; gap: 10px;
  margin: 0 0 10px; padding: 10px 12px 10px 14px;
  border-radius: var(--radius-md, 12px);
  border: 1px solid var(--border-mild);
  background: var(--accent-fill-subtle, rgba(var(--accent-rgb), .12));
  font-size: 13px; color: var(--text);
}

/* The class sets display:flex, which defeats the `hidden` attribute — restate
   it so the bar only shows when renderBlockedBar() unhides it. */
.chat-blocked-bar[hidden] { display: none; }
.chat-blocked-bar > .material-symbols-rounded { font-size: 18px; color: var(--accent); flex-shrink: 0; }
.chat-blocked-text { flex: 1; min-width: 0; color: var(--text-soft, var(--text)); }
.chat-blocked-upgrade-btn {
  flex-shrink: 0; cursor: pointer; border: none; white-space: nowrap;
  color: var(--btn-primary-color);
  background: var(--btn-primary-bg, var(--accent));
  box-shadow: var(--btn-primary-shadow);
  border-radius: var(--btn-radius-pill, 999px);
  padding: 7px 14px; font-family: var(--font-main);
  font-size: 13px; font-weight: var(--btn-font-weight, 600); letter-spacing: var(--btn-letter-spacing, .02em);
  transition: transform var(--btn-transition, var(--dur-fast)) var(--ease-out), box-shadow var(--btn-transition, var(--dur-fast)) var(--ease-out);
}
.chat-blocked-upgrade-btn:hover { background: var(--btn-primary-bg-hover, var(--accent)); }
.chat-blocked-upgrade-btn:active {
  transform: translateY(var(--btn-primary-press-y, 1px));
  box-shadow: var(--btn-primary-shadow-active);
}
@media (max-width: 520px) {
  .chat-blocked-bar { flex-wrap: wrap; }
  .chat-blocked-text { flex-basis: 100%; }
}

/* ── Step-by-step worked solutions (```steps) ─────────────────────────── */
.jf-steps {
  margin: 10px 0;
  border: 1px solid var(--line, var(--border));
  border-radius: 14px;
  padding: 12px 14px;
}
.jf-steps-problem {
  font-weight: 600;
  margin-bottom: 8px;
}
.jf-steps-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.jf-step {
  display: none;
  align-items: baseline;
  gap: 10px;
}
.jf-step.is-revealed {
  display: flex;
  animation: jf-step-in 0.25s ease;
}
@keyframes jf-step-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}
.jf-step-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}
.jf-steps-answer {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--line, var(--border));
}
.jf-steps-answer-tag {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}
.jf-steps-controls {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}
.jf-steps-all {
  opacity: 0.75;
}

/* ── Study plan confirmation card (```study-plan) ─────────────────────── */
.jf-plan {
  margin: 10px 0;
  border: 1px solid var(--line, var(--border));
  border-radius: 14px;
  padding: 12px 14px;
  background: rgba(var(--on-rgb), 0.04);
}
.jf-plan-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.jf-plan-title {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 13px;
}
.jf-plan-title .material-symbols-rounded {
  font-size: 18px;
  color: var(--accent);
}
.jf-plan-exams {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 9px;
}
.jf-plan-exam {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  max-width: 100%;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.12);
  font-size: 12px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.jf-plan-exam .material-symbols-rounded {
  font-size: 14px;
}
.jf-plan-list {
  list-style: none;
  margin: 9px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
}
.jf-plan-date {
  display: inline-block;
  min-width: 86px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.jf-plan-more {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ── One-click study kit chips (attached document) ────────────────────── */
.chat-study-kit {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.chat-study-kit-chip .material-symbols-rounded {
  font-size: 15px;
  margin-right: 5px;
}

/* ── Deck review overlay (Again / Good / Easy) ────────────────────────── */
.study-review-overlay,
.study-cal-overlay {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-toast) + 1);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--scrim);
}
.study-review-modal {
  width: min(460px, 94vw);
  border-radius: 16px;
  background: var(--surface-elevated, var(--panel));
  border: 1px solid var(--border, var(--line));
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.study-review-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.study-review-progress {
  font-size: 12px;
  color: var(--text-muted);
}
.study-review-close {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--btn-radius);
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.study-review-close:hover {
  background: var(--hover-fill-strong);
  color: var(--text);
}
.study-review-card {
  border: 1px solid var(--line, var(--border));
  border-radius: 12px;
  padding: 18px 16px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: center;
}
.study-review-q {
  font-weight: 600;
  font-size: 15px;
}
.study-review-a {
  border-top: 1px dashed var(--line, var(--border));
  padding-top: 12px;
  color: var(--text-soft, var(--text));
}
.study-review-controls {
  display: flex;
  gap: 8px;
  justify-content: center;
}
.study-grade-again { color: var(--error-text); }
.study-grade-good { color: var(--accent); }
.study-grade-easy { color: var(--success-text); }
.study-review-done {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: 14px 0 4px;
}
.study-review-done .material-symbols-rounded {
  font-size: 34px;
  color: var(--accent);
}
.study-review-done p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Study calendar modal ─────────────────────────────────────────────── */
.study-cal-modal {
  width: min(560px, 95vw);
  max-height: min(86vh, 780px);
  overflow-y: auto;
  border-radius: 16px;
  background: var(--surface-elevated, var(--panel));
  border: 1px solid var(--border, var(--line));
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.study-cal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.study-cal-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.study-cal-title {
  font-size: 15px;
  min-width: 150px;
  text-align: center;
}
.study-cal-navbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: var(--btn-radius);
  border: 1px solid var(--line, var(--border));
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.study-cal-navbtn:hover {
  color: var(--text);
  background: var(--hover-fill-strong);
}
.study-cal-countdowns {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.study-cal-countdown {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.12);
  font-size: 12px;
  font-weight: 600;
}
.study-cal-countdown .material-symbols-rounded {
  font-size: 14px;
  color: var(--accent);
}
.study-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}
.study-cal-wd {
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-bottom: 2px;
}
.study-cal-cell {
  min-height: 58px;
  border: 1px solid var(--line, var(--border));
  border-radius: 9px;
  background: transparent;
  color: inherit;
  padding: 4px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
  cursor: pointer;
  text-align: left;
  overflow: hidden;
  transition: background var(--dur-base) var(--ease-out);
}
.study-cal-cell.is-empty {
  border: none;
  cursor: default;
}
.study-cal-cell:not(.is-empty):hover {
  background: var(--hover-fill);
}
.study-cal-cell.is-today .study-cal-daynum {
  background: var(--accent);
  color: var(--on-accent);
}
.study-cal-cell.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.25);
}
.study-cal-daynum {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 3px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}
.study-cal-exam {
  font-size: 10px;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 4px;
  background: rgba(var(--accent-rgb), 0.16);
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.study-cal-dots {
  display: flex;
  gap: 3px;
  margin-top: auto;
}
.study-cal-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
}
.study-cal-dots i.is-done {
  background: var(--accent-strong);
}
.study-cal-editor {
  border-top: 1px solid var(--line, var(--border));
  padding-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.study-cal-editor-title {
  font-weight: 600;
  font-size: 13px;
}
.study-cal-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.study-cal-item .material-symbols-rounded {
  font-size: 16px;
  color: var(--accent);
}
.study-cal-item-text {
  flex: 1;
  min-width: 0;
}
.study-cal-item-text.is-done {
  text-decoration: line-through;
  color: var(--text-muted);
}
.study-cal-item-src {
  font-size: 10px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 4px;
  background: rgba(var(--on-rgb), 0.12);
  color: var(--text-muted);
}
.study-cal-add {
  display: flex;
  gap: 6px;
}
.study-cal-add-input {
  flex: 1;
  min-width: 0;
  padding: 7px 10px;
  border-radius: 9px;
  border: 1px solid var(--line, var(--border));
  background: transparent;
  color: inherit;
  font-size: 13px;
}
.study-cal-add-input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.2);
}

/* ── Message "⋯" menu (timestamp, sources, branch, model stats) ────────── */
.message-more-wrap {
  position: relative;
  display: inline-flex;
}

.message-more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: var(--btn-radius);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.message-more-btn:hover,
.message-more-btn[aria-expanded="true"] {
  background: var(--hover-fill-strong);
  color: var(--text);
}

.message-more-btn .material-symbols-rounded {
  font-size: 18px;
}

.message-more-menu {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 0;
  z-index: 120;
  min-width: 230px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-strong, var(--panel));
  animation: ui-pop var(--dur-base) var(--ease-out);
}

.message-more-menu[hidden] {
  display: none;
}

.message-more-time {
  padding: 6px 10px 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.message-more-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
}

.message-more-item:hover {
  background: var(--hover-fill-strong);
}

.message-more-item .material-symbols-rounded {
  font-size: 18px;
  color: var(--text-muted);
}

.message-more-stats {
  margin-top: 4px;
  padding: 6px 10px 4px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.message-more-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.message-more-stat .material-symbols-rounded {
  font-size: 15px;
}

/* ── Smart popup variants (set by jomoqSmartMenu / smart tooltips) ─────── */
.message-more-menu.menu-flip-down {
  bottom: auto;
  top: calc(100% + 6px);
}

.message-more-menu.menu-align-right {
  left: auto;
  right: 0;
}

.chat-composer-model-picker .chat-model-menu.menu-flip-down,
.chat-model-menu.menu-flip-down {
  bottom: auto;
  top: calc(100% + 10px);
}

.chat-composer-dropup.menu-flip-down {
  bottom: auto;
  top: calc(100% + 8px);
}


/* ── Settings popup: left rail + tabbed pane (account modal) ─────────────
   Sections swap via the rail — [hidden] must beat the flex display on the
   panels, hence the explicit display:none. Rail buttons reuse the
   .chat-sidebar-link-btn recipe so the popup reads as part of the app. */

.chat-set-layout {
  flex: 1;
  min-height: 0;
  display: flex;
}

.chat-set-rail {
  flex: 0 0 188px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px;
  border-right: 1px solid var(--line);
}

.chat-set-rail-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: var(--btn-radius);
  background: transparent;
  color: var(--text-soft);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  box-sizing: border-box;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.chat-set-rail-btn:hover {
  background: var(--hover-fill);
  color: var(--text);
  text-decoration: none;
}

.chat-set-rail-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--select-focus-ring);
}

.chat-set-rail-btn.active {
  background: var(--hover-fill-strong);
  color: var(--text);
  font-weight: 600;
}

.chat-set-rail-btn .material-symbols-rounded {
  font-size: 18px;
  opacity: 0.85;
}

.chat-set-rail-out {
  margin-left: auto;
  font-size: 14px !important;
  opacity: 0.6;
}

.chat-set-rail-foot {
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.chat-set-rail-foot .settings-action-button {
  width: 100%;
  justify-content: center;
}

.chat-set-pane {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  padding: 16px 20px 24px;
}

.chat-set-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: ui-fade var(--dur-base) var(--ease-out);
}

.chat-set-panel[hidden] {
  display: none;
}

.chat-set-heading {
  margin: 0 0 2px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.chat-set-hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-muted);
}

.chat-set-hint a {
  color: var(--text-soft);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.chat-set-hint a:hover {
  color: var(--text);
}

/* List card: rows carry the vertical rhythm, card carries the frame. */
.chat-set-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-2);
  padding: 4px 14px;
}

.chat-set-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  font-size: 13px;
  color: var(--text);
}

.chat-set-row + .chat-set-row {
  border-top: 1px solid var(--line);
}

.chat-set-row select {
  min-width: 140px;
  padding: 7px 11px;
  border-radius: 10px;
  border: 1.5px solid var(--select-border);
  background: var(--select-bg);
  color: var(--text);
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.chat-set-row select:hover {
  background: var(--select-bg-hover);
}

.chat-set-row select:focus-visible {
  outline: none;
  border-color: var(--select-border-focus);
  box-shadow: 0 0 0 3px var(--select-focus-ring);
}

.chat-set-mem-add {
  display: flex;
  gap: 6px;
}

.chat-set-mem-add input {
  flex: 1;
  min-width: 0;
  padding: 8px 11px;
  border-radius: 10px;
  border: 1.5px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text);
  font-size: 13px;
  transition: border-color var(--dur-fast) var(--ease-out);
}

.chat-set-mem-add input:focus-visible {
  outline: none;
  border-color: var(--input-border-focus);
  box-shadow: 0 0 0 3px var(--select-focus-ring);
}

/* Narrow screens: rail collapses to a horizontal chip row on top. */
@media (max-width: 640px) {
  .chat-set-layout {
    flex-direction: column;
  }

  .chat-set-rail {
    flex: 0 0 auto;
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 8px 10px;
  }

  .chat-set-rail-btn {
    flex: 0 0 auto;
    width: auto;
    white-space: nowrap;
  }

  .chat-set-rail-foot {
    margin-top: 0;
    margin-left: auto;
    padding-top: 0;
    border-top: none;
  }

  .chat-set-rail-foot .settings-action-button {
    width: auto;
  }
}

/* ── Guest (anonymous) chat chrome ──────────────────────────────────────── */

.chat-guest-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-guest-actions[hidden] {
  display: none;
}

.chat-guest-sidebar-cta {
  margin: 0 0 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md, 12px);
  background: var(--surface-2, var(--surface));
}

.chat-guest-sidebar-cta[hidden] {
  display: none;
}

.chat-guest-sidebar-title {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.chat-guest-sidebar-copy {
  margin: 0 0 10px;
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-muted);
}

.chat-guest-sidebar-cta .btn {
  width: 100%;
}

/* Guests have no saved conversations — soften the empty rail. */
body.chat-guest .chat-conv-list:empty::after {
  content: "Chats you start here disappear when you leave — sign up to keep them.";
  display: block;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-faint, var(--text-muted));
}

/* Pro-locked feature tag (composer "Build something", etc.) */
.pro-tag {
  margin-left: auto;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--on-accent, #fff);
  background: var(--accent);
}

.pro-tag[hidden] {
  display: none;
}

/* "Already have an account?" link inside the guest upgrade wall */
.upg-signin-link {
  display: inline;
  margin-left: 6px;
  padding: 0;
  border: none;
  background: none;
  color: var(--link, var(--accent));
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

/* ── Work-mode badge (assistant picker + empty-state heading) ─────────────── */
.chat-mode-badge {
  font-family: var(--font-main);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.3;
  padding: 3px 10px;
  border: none;
  border-radius: 999px;
  /* Accent ink chip: white bg + black text in dark theme (inverts in light). */
  color: var(--on-accent, #0A0A0C);
  background: var(--accent, #FFFFFF);
  white-space: nowrap;
}
/* On the sidebar assistant button: preset name left, mode badge at the end. */
.chat-sidebar-assistant-btn #chat-config-label {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}
.chat-sidebar-assistant-btn .chat-mode-badge {
  margin-left: auto;
}
/* In the empty-state heading: align to the middle of the display type. */
.chat-empty-title-badge {
  font-size: 12px;
  padding: 3px 10px;
  margin-left: 12px;
  vertical-align: middle;
  position: relative;
  top: -3px;
}
/* Signed-in empty state has no subtitle - open up the gap under the heading. */
.chat-empty-state h1 + .chat-starter-grid {
  margin-top: 18px;
}
/* [hidden] must always win over the flex display above (guest state). */
.chat-sidebar-new-btn[hidden] {
  display: none;
}

/* ── Assistant carousel (Customize playground popup) ─────────────────────── */
/* The hidden Preset select is the state carrier; [hidden] must beat any
   display rule on .chat-customize-field. */
.chat-customize-field[hidden] {
  display: none;
}
.chat-assistant-carousel-inner {
  position: relative;
}
.chat-assistant-carousel .chat-assistant-track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 2px;
}
.chat-assistant-carousel .chat-assistant-track::-webkit-scrollbar {
  display: none;
}
.chat-assistant-carousel .chat-assistant-track:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 10px;
}
.chat-assistant-carousel .chat-assistant-track .project-preset-card {
  flex: 0 0 auto;
  width: 210px;
  scroll-snap-align: start;
}
.chat-assistant-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface-2, var(--panel));
  color: var(--text-soft);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.chat-assistant-arrow[data-dir="prev"] { left: -10px; }
.chat-assistant-arrow[data-dir="next"] { right: -10px; }
.chat-assistant-arrow:hover:not(:disabled) {
  background: var(--hover-fill-strong, rgba(255, 255, 255, 0.1));
  color: var(--text);
}
.chat-assistant-arrow:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.chat-assistant-arrow:disabled {
  opacity: 0;
  pointer-events: none;
}
.chat-assistant-arrow[hidden] {
  display: none;
}
.chat-assistant-arrow .material-symbols-rounded {
  font-size: 18px;
}
@media (max-width: 520px) {
  .chat-assistant-carousel .chat-assistant-track .project-preset-card {
    width: 78%;
  }
}

/* ── Upgrade modal: tier ladder + credit top-ups ─────────────────────────── */
.upg-tiers {
  display: grid;
  gap: 8px;
  margin: 4px 0 18px;
}
.upg-tier {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.upg-tier:hover { border-color: var(--line-strong); background: var(--hover-fill); }
.upg-tier-best { border-color: var(--accent); }
.upg-tier-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.upg-tier-name { font-size: 14px; font-weight: 600; color: var(--text); }
.upg-tier-price {
  font-size: 18px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}
.upg-tier-price small { font-size: 12px; font-weight: 500; color: var(--text-muted); }
.upg-tier-credits { font-size: 12.5px; color: var(--text-muted); }
.upg-topups { margin: 16px 0 4px; }
.upg-topups-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.upg-topups-row { display: flex; gap: 8px; flex-wrap: wrap; }
.upg-topup {
  flex: 1 1 auto;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.upg-topup:hover { border-color: var(--line-strong); color: var(--text); }
.upg-topup small { color: var(--text-muted); margin-left: 4px; }