/* Shared student-workspace language, matching MindCodaTheme.swift.
   Scoped to the existing app: marketing, note formatting, and saved preferences
   retain their own surfaces. Content is quiet; glass belongs on controls. */
.app-shell {
  --mc-ink: #0c193d;
  --mc-ink-secondary: #4d5c75;
  --mc-teal: #0f4f42;
  --mc-blue: #0940c4;
  --mc-surface: #fff;
  --mc-pearl: #fcfcf2;
  --mc-mint: #c7fce0;
  --mc-on-accent: #fff;
  --mc-line: rgba(12,25,61,.16);
  --mc-line-strong: rgba(12,25,61,.26);
  --mc-font-display: var(--mc-font);
  --mc-radius-sm: 12px;
  --mc-radius-md: 16px;
  --mc-radius-lg: 20px;
  --mc-radius-xl: 20px;
  --mc-duration-fast: 160ms;
  --mc-duration-standard: 220ms;
  --glass-panel: color-mix(in srgb,var(--mc-surface) 96%,transparent);
  --glass-edge: var(--mc-line);
  --aurora-card: var(--glass-panel);
  --aurora-glow: rgba(199,252,224,.16);
  color: var(--mc-ink);
  background: linear-gradient(160deg,#edf9f3 0%,var(--mc-pearl) 48%,#fff 100%);
}
.theme-dark .app-shell {
  --mc-ink: #f2f6ff;
  --mc-ink-secondary: #bbc9e2;
  --mc-teal: #9cefcc;
  --mc-blue: #a5c2ff;
  --mc-surface: #142446;
  --mc-pearl: #09152e;
  --mc-mint: #c7fce0;
  --mc-on-accent: #071735;
  --mc-line: rgba(176,194,209,.22);
  --mc-line-strong: rgba(176,194,209,.38);
  --glass-panel: #142446;
  --glass-edge: var(--mc-line);
  --aurora-card: var(--glass-panel);
  --aurora-glow: rgba(156,239,204,.08);
  background: linear-gradient(160deg,#0c2529,var(--mc-pearl) 45%);
}
.app-shell :is(.mc-card,.today-quick-actions) {
  background: var(--glass-panel);
  border-color: var(--mc-line);
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(5,21,92,.05);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.app-shell .today-next {
  background: var(--glass-panel);
  border-radius: 20px;
  border-color: var(--mc-line);
}
.app-shell :is(.page-header h1,.today-next h2) {
  font-family: var(--mc-font);
  letter-spacing: -.025em;
  line-height: 1.2;
}
.app-shell .mc-button--primary:not(.home-start-focus) {
  min-height: 54px;
  border-radius: 12px;
  background: var(--mc-teal);
  color: var(--mc-on-accent);
  border-color: transparent;
  box-shadow: none;
}
.app-shell .mc-button--secondary { border-radius: 12px; }
.app-shell .mc-nav__item.is-active {
  background: color-mix(in srgb,var(--mc-teal) 10%,transparent);
  color: var(--mc-teal);
  border-color: transparent;
  box-shadow: none;
}
.app-shell .mc-nav--mobile {
  background: color-mix(in srgb,var(--mc-surface) 88%,transparent);
  border-color: var(--mc-line);
}
.app-shell .mc-nav--mobile .mc-nav__item.is-active { color: var(--mc-teal); }
.app-shell .glass-wordmark {
  display: flex; align-items: center; gap: 8px;
  color: var(--mc-ink); font-size: 1.125rem; font-weight: 650;
  letter-spacing: -.025em; white-space: nowrap;
}
.app-shell .glass-wordmark img { width: 30px; height: 30px; object-fit: contain; }
.app-shell .glass-time-weather { border: 0; background: transparent; padding: 0; box-shadow: none; }
.app-shell .glass-clock { min-width: 0; }
.app-shell .glass-clock > time { display: block; }
.app-shell .glass-clock > span { font-size: .75rem; color: var(--mc-ink-secondary); }
.app-shell .coda-anytime { min-height: 44px; }
.app-shell .mobile-sections-button { border-radius: 12px; }
@media (max-width:760px) {
  .app-shell .app-main { padding-inline: 18px; }
  .app-shell .glass-topbar { align-items: center; gap: 8px; margin-bottom: 24px; min-height: 44px; }
  .app-shell .glass-wordmark { display: flex; margin-right: auto; }
  .app-shell .glass-time-weather { flex: 0 1 auto; min-width: 0; }
  .app-shell .glass-clock > span { display: none; }
  .app-shell .glass-clock .coda-anytime { margin: 0; padding: 4px; }
  .app-shell .glass-clock .coda-anytime img { width: 24px; height: 24px; }
  .app-shell .glass-clock .coda-anytime span { font-size: .75rem; }
  .app-shell .mc-nav--mobile { border-radius: 20px; bottom: max(8px,env(safe-area-inset-bottom)); padding-bottom: 7px; }
  .app-shell .mc-nav--mobile .mc-nav__item { min-height: 48px; font-size: .6875rem; }
  .app-shell .today-header h1 { font-size: 1.75rem; max-width: none; }
  .app-shell .today-header__copy { font-size: .9375rem; }
}
@media (prefers-reduced-transparency:reduce) {
  .app-shell .mc-nav--mobile { background: var(--mc-surface); -webkit-backdrop-filter: none; backdrop-filter: none; }
}
@media (prefers-contrast:more) {
  .app-shell :is(.mc-card,.today-next,.mc-nav--mobile) { border-color: var(--mc-ink-secondary); }
}
/* The existing Tutor moves this form outside .app-shell. Keep its allowance,
   question, and voice controls on separate rows at every viewport size. */
html:not(.theme-dark) body > form.coda-bottom-composer,
body > form.coda-bottom-composer {
  display: grid !important;
  grid-template-columns: minmax(0,1fr);
  gap: 10px;
  max-height: min(380px,60dvh);
  overflow-y: auto;
  border-radius: 20px !important;
  border-color: rgba(12,25,61,.2) !important;
  background: rgba(255,255,255,.96) !important;
  color: #0c193d;
  box-shadow: 0 6px 24px rgba(5,21,92,.12);
}
.theme-dark body > form.coda-bottom-composer {
  background: rgba(20,36,70,.96) !important;
  color: #f2f6ff;
  border-color: rgba(176,194,209,.3) !important;
}
body > form.coda-bottom-composer textarea {
  width: 100%; min-width: 0; min-height: 52px !important;
  height: 52px; padding: 8px !important; line-height: 1.5;
}
body > form.coda-bottom-composer :is(.ai-action-allowance,.mc-voice-status) {
  margin: 0; padding: 0; width: 100%; max-width: none;
  font-size: .75rem; line-height: 1.45; color: inherit;
}
body > form.coda-bottom-composer .tutor-quick-actions { display: flex !important; flex-wrap: wrap; gap: 8px; }
body > form.coda-bottom-composer .tutor-quick-actions summary { min-height: 44px; padding: 10px 0; font-size: .8125rem; }
body > form.coda-bottom-composer .ai-composer__bottom { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
body > form.coda-bottom-composer .ai-voice-actions { display: flex; flex-wrap: wrap; align-items: center; flex: 1 1 180px; gap: 6px; }
body > form.coda-bottom-composer .mc-spoken-toggle { display: flex; align-items: center; gap: 6px; min-height: 44px; font-size: .8125rem; }
body > form.coda-bottom-composer .mc-spoken-toggle input { width: 20px; height: 20px; }
body > form.coda-bottom-composer .mc-tutor-voice-trigger { min-height: 44px; padding: 8px; font-size: .8125rem; color: inherit; }
body > form.coda-bottom-composer [data-ai-send] { background: #0f4f42; }
.theme-dark body > form.coda-bottom-composer [data-ai-send] { background: #9cefcc; color: #071735; }
@media (prefers-reduced-transparency:reduce) {
  body > form.coda-bottom-composer { background: #fff !important; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .theme-dark body > form.coda-bottom-composer { background: #142446 !important; }
}
/* Preserve the runtime's route/privacy visibility guard above layout overrides. */
html body > form.coda-bottom-composer[hidden] { display: none !important; }