/* ================================================================
   RÉVISIO — Tinder UI Design System
   ================================================================ */

/* ── Override fonts ── */
:root {
  --font-display: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body:    'Plus Jakarta Sans', system-ui, sans-serif;
  --font-card:    'Crimson Pro', Georgia, serif;

  /* Tinder layout */
  --topbar-h:     58px;
  --bnav-h:       72px;
  --swipe-easy:   #00C48C;
  --swipe-hard:   #FF4E6A;

  /* Card shadow */
  --card-shadow: 0 8px 40px rgba(0,0,0,0.14), 0 2px 10px rgba(0,0,0,0.08);
  --card-shadow-hover: 0 16px 60px rgba(0,0,0,0.2), 0 4px 16px rgba(0,0,0,0.1);
}
[data-theme="dark"] {
  --card-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 2px 10px rgba(0,0,0,0.3);
  --card-bg: #1C1C2E;
}
[data-theme="light"], :root {
  --card-bg: #FFFFFF;
}

/* Force solid card background — dark mode bg-surface is semi-transparent */
.tinder-card {
  background: var(--card-bg, #FFFFFF) !important;
}

/* ================================================================
   APP SHELL — Tinder layout
   ================================================================ */
html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-base);
}

/* App uses position:fixed so it fills the viewport reliably
   on ALL mobile browsers (avoids 100dvh quirks on iOS Safari) */
.tinder-app {
  position: fixed;
  inset: 0;               /* top:0 right:0 bottom:0 left:0 */
  max-width: 520px;
  margin: 0 auto;         /* centre horizontally when viewport > 520px */
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-base);
}

/* On desktop: subtle side borders */
@media (min-width: 600px) {
  .tinder-app {
    box-shadow: 0 0 80px rgba(0,0,0,0.12);
    border-left: 1px solid var(--border-subtle);
    border-right: 1px solid var(--border-subtle);
  }
}

/* Hide old sidebar/header (if any remnants) */
.sidebar, .mobile-header { display: none !important; }

/* ================================================================
   TOP BAR — 3 colonnes : gauche | centre | droite
   ================================================================ */
.tinder-topbar {
  position: relative; z-index: 100;
  height: var(--topbar-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 10px;
  gap: 6px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
  overflow: visible; /* permet au dropdown de déborder sous la barre */
}

.topbar-left-group  { display: flex; align-items: center; gap: 4px; justify-content: flex-start; }
.topbar-right-group { display: flex; align-items: center; gap: 4px; justify-content: flex-end; }

/* Centre : le sélecteur PDF */
.topbar-center {
  display: flex; align-items: center; justify-content: center;
}

.topbar-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-2); font-size: 1.1rem;
  transition: all .18s; cursor: pointer;
}
.topbar-btn:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-light); }
.topbar-btn:active { transform: scale(.92); }

/* Doc pill centré dans la topbar */
.doc-pill-topbar {
  max-width: 210px;
  justify-content: center;
}

/* Dropdown dans la topbar : centré sous le bouton, z-index élevé */
.topbar-center {
  overflow: visible; /* laisser le dropdown déborder */
}
.topbar-center .subject-dropdown {
  left: 50%;
  transform: translateX(-50%);
  min-width: 250px;
  z-index: 600; /* au-dessus de tout le reste */
  top: calc(100% + 8px);
}
.topbar-center .subject-dropdown:not(.hidden) {
  display: block;
  transform: translateX(-50%);
  animation: dropdown-in-center .18s cubic-bezier(.34,1.56,.64,1);
}
@keyframes dropdown-in-center {
  from { opacity: 0; transform: translateX(-50%) translateY(-6px) scale(.96); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0)    scale(1); }
}

/* ================================================================
   MAIN CONTENT
   ================================================================ */
.tinder-main {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.tinder-view {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  overflow-y: auto;
  animation: view-slide-in .22s ease-out;
}
.tinder-view.hidden { display: none; }

@keyframes view-slide-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── View top bar (for secondary views) ── */
.view-topbar {
  flex-shrink: 0;
  padding: 14px 16px 10px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-base);
  position: sticky; top: 0; z-index: 10;
}
.view-title {
  font-family: var(--font-display);
  font-size: 1.2rem; font-weight: 800;
  letter-spacing: -.025em; color: var(--text-1);
  flex: 1;
}

/* ================================================================
   SWIPE VIEW
   ================================================================ */
#view-swipe {
  overflow: hidden;
  background: var(--bg-base);
}

.swipe-topinfo {
  display: flex; align-items: center; justify-content: flex-end;
  padding: 6px 16px 4px;
  flex-shrink: 0;
  min-height: 28px;
}

.swipe-counter {
  font-size: .75rem; font-weight: 600; color: var(--text-3);
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
  padding: 3px 10px; border-radius: 99px;
}

/* Doc pill (subject switcher) */
.doc-switcher-wrap { position: relative; }
.doc-pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 11px; border-radius: 99px;
  background: var(--bg-surface); border: 1px solid var(--border);
  color: var(--text-1); font-size: .78rem; font-weight: 600;
  cursor: pointer; transition: all .18s;
}
.doc-pill:hover { border-color: var(--accent); color: var(--accent); }
.doc-pill .ti { font-size: .85rem; }

/* Card area */
.swipe-card-area {
  flex: 1;
  display: flex; align-items: center; justify-content: center;
  position: relative;
  padding: 6px 12px;
  overflow: hidden;
}

/* Loading state */
.swipe-loading {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  color: var(--text-3);
}
.swipe-loading p { font-size: .85rem; }
.spin-anim { animation: spin-360 1.2s linear infinite; display: inline-block; font-size: 2rem; }
@keyframes spin-360 { to { transform: rotate(360deg); } }

/* Pull-to-refresh indicator */
.pull-indicator {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%) translateY(-20px);
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; opacity: 0; pointer-events: none;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  z-index: 5;
  transition: opacity .1s;
}
.pull-indicator .spin-anim { font-size: 1.1rem; }

/* Empty state */
.swipe-empty {
  text-align: center; padding: 24px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.swipe-empty-emoji { font-size: 3.5rem; }
.swipe-empty h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-1); }
.swipe-empty p { font-size: .875rem; color: var(--text-3); max-width: 260px; }
.btn-upload-cta {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 11px 22px; border-radius: 99px;
  background: var(--accent); color: #fff;
  font-weight: 700; font-size: .9rem;
  transition: all .18s; margin-top: 8px;
}
.btn-upload-cta:hover { opacity: .88; transform: translateY(-1px); }
.btn-restart {
  padding: 11px 28px; border-radius: 99px;
  background: var(--accent); color: #fff;
  font-weight: 700; font-size: .9rem;
  transition: all .18s;
}
.btn-restart:hover { opacity: .88; }

.swipe-complete {
  text-align: center; padding: 24px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.swipe-complete-icon { font-size: 3.5rem; }

/* ── Card Stack ── */
.card-stack {
  position: relative;
  width: 100%;
  max-width: 400px;
  height: 100%;
  display: flex; align-items: center; justify-content: center;
}

.tinder-card {
  position: absolute;
  width: 100%;
  max-height: 100%;
  background: var(--bg-surface);
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  overflow: hidden;
  cursor: grab;
  user-select: none;
  touch-action: none;   /* prevent browser pan so JS captures all pointer events */
  will-change: transform;
  transform:
    translateY(calc(var(--stack-i, 0) * 10px))
    scale(calc(1 - var(--stack-i, 0) * 0.04));
  transition: transform 0.3s ease;
}
.tinder-card[data-stack="1"] { filter: brightness(.97); }
.tinder-card[data-stack="2"] { filter: brightness(.94); }
.tinder-card.is-dragging { cursor: grabbing; transition: none; }
.tinder-card:active { cursor: grabbing; }

/* Left-side type bar */
.card-type-bar {
  position: absolute; left: 0; top: 0; bottom: 0; width: 5px;
  border-radius: 20px 0 0 20px;
}

/* Heart button */
.card-heart-btn {
  position: absolute; top: 13px; right: 13px; z-index: 5;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--bg-base); border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: var(--text-3);
  transition: all .2s; cursor: pointer;
}
.card-heart-btn:hover { border-color: var(--swipe-hard); color: var(--swipe-hard); transform: scale(1.1); }
.card-heart-btn.is-fav { color: var(--swipe-hard); border-color: var(--swipe-hard); background: #FFF0F3; }
[data-theme="dark"] .card-heart-btn.is-fav { background: rgba(255,78,106,.12); }

/* Card inner content */
.card-inner {
  padding: 22px 22px 16px 28px;
  display: flex; flex-direction: column; gap: 12px;
  min-height: 520px;   /* plus grand pour afficher plus de texte */
}

.card-meta-row {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  padding-right: 40px; /* avoid heart btn */
}
.card-subject-chip {
  font-size: .68rem; font-weight: 600; color: var(--text-3);
  background: var(--bg-hover); border: 1px solid var(--border-subtle);
  padding: 2px 8px; border-radius: 99px;
}
.card-type-chip {
  font-size: .67rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .05em; padding: 2px 8px; border-radius: 99px;
  border: 1px solid transparent;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 800;
  line-height: 1.25; color: var(--text-1);
  letter-spacing: -.025em;
}

.card-content-preview {
  font-family: var(--font-card);
  font-size: 1.05rem; line-height: 1.75;
  color: var(--text-2);
  flex: 1;
  /* Fade-out en bas — max-height retiré pour laisser le flex gérer */
  overflow: hidden;
  mask-image: linear-gradient(to bottom, black 82%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 82%, transparent 100%);
}

.card-tap-hint {
  display: flex; align-items: center; gap: 5px;
  font-size: .72rem; color: var(--text-3);
  padding: 10px 0 4px;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
  flex-shrink: 0;
}

/* ── Mots-clés mis en évidence (Définition, Exemple, Règle…) ── */
.term-label {
  display: inline-block;
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  color: var(--text-1);
  margin-top: 6px;    /* espace avant le terme */
  font-family: var(--font-display);
  font-size: .92em;
  letter-spacing: .01em;
}
/* Couleurs différentes selon le type de terme */
.term-label[data-term="définition"]  { color: #1761A0; text-decoration-color: #1761A0; }
.term-label[data-term="exemple"],
.term-label[data-term="exemples"]   { color: #1A7A45; text-decoration-color: #1A7A45; }
.term-label[data-term="règle"],
.term-label[data-term="règles"]     { color: #C2620A; text-decoration-color: #C2620A; }
.term-label[data-term="formule"],
.term-label[data-term="formules"]   { color: #534AB7; text-decoration-color: #534AB7; }
.term-label[data-term="schéma"]     { color: #7C3AED; text-decoration-color: #7C3AED; }
.term-label[data-term="remarque"]   { color: #8B3BAB; text-decoration-color: #8B3BAB; }
.term-label[data-term="attention"]  { color: #DC2626; text-decoration-color: #DC2626; }
.term-label[data-term="propriété"],
.term-label[data-term="propriétés"] { color: #0E7490; text-decoration-color: #0E7490; }
.term-label[data-term="théorème"]   { color: #0E7490; text-decoration-color: #0E7490; }
.term-label[data-term="méthode"]    { color: #B45309; text-decoration-color: #B45309; }
.term-label[data-term="application"]{ color: #059669; text-decoration-color: #059669; }

/* ── Swipe labels ── */
.swipe-label {
  position: absolute; top: 24px;
  padding: 6px 16px;
  border-radius: 8px;
  border-width: 3px; border-style: solid;
  font-weight: 900; font-size: 1.1rem;
  letter-spacing: .08em;
  opacity: 0;
  pointer-events: none;
  transition: opacity .08s;
}
.label-facile {
  left: 20px;
  color: var(--swipe-easy); border-color: var(--swipe-easy);
  background: rgba(0,196,140,.08);
  transform: rotate(-8deg);
}
.label-difficile {
  right: 20px;
  color: var(--swipe-hard); border-color: var(--swipe-hard);
  background: rgba(255,78,106,.08);
  transform: rotate(8deg);
}

/* ── Swipe feedback toast ── */
.swipe-feedback {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  border-width: 3px; border-style: solid;
  padding: 8px 22px; border-radius: 10px;
  font-weight: 900; font-size: 1.4rem; letter-spacing: .1em;
  pointer-events: none; z-index: 20;
  animation: swipe-fb-anim .7s ease-out forwards;
  white-space: nowrap;
}
@keyframes swipe-fb-anim {
  0%   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  70%  { opacity: 1; transform: translate(-50%, -50%) scale(1.08); }
  100% { opacity: 0; transform: translate(-50%, -60%) scale(1.1); }
}

/* Swipe hint en bas de la carte (au lieu de boutons) */

/* ================================================================
   BOTTOM NAVIGATION
   ================================================================ */
.tinder-bottom-nav {
  flex-shrink: 0;
  /* Grow with safe-area so content stays above the home indicator */
  min-height: var(--bnav-h);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  display: flex; align-items: center; justify-content: space-around;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  position: relative; z-index: 100;
  overflow: visible; /* le cercle Révision déborde vers le haut */
}

.bnav-item {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0;
  flex: 1; padding: 8px 4px;
  color: var(--text-3); text-decoration: none;
  font-size: .62rem; font-weight: 600; letter-spacing: .01em;
  transition: color .18s;
  position: relative;
}
.bnav-item .ti { font-size: 1.65rem; transition: transform .2s cubic-bezier(.34,1.56,.64,1); }
.bnav-item:hover { color: var(--text-2); }
.bnav-item:hover .ti { transform: scale(1.12); }
.bnav-item.active { color: var(--accent); }
.bnav-item.active .ti { transform: scale(1.18); }
.bnav-item.active::after {
  content: '';
  position: absolute; top: 0; left: 20%; right: 20%; height: 2.5px;
  background: var(--accent); border-radius: 0 0 3px 3px;
  animation: bnav-indicator .2s ease-out;
}
@keyframes bnav-indicator {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ── Bouton Révision — grand cercle mis en évidence ── */
.bnav-revision {
  flex: 1.4;
  gap: 2px;
  padding-top: 0;
  color: var(--text-3);
  overflow: visible;
}
.bnav-revision-circle {
  width: 68px; height: 68px; border-radius: 50%;
  background: linear-gradient(145deg, var(--accent) 0%, #C084FC 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.85rem;
  box-shadow:
    0 6px 24px rgba(83, 74, 183, 0.55),
    0 2px 8px  rgba(0,0,0,.2),
    0 0 0 5px var(--bg-surface);
  margin-top: -30px;   /* déborde plus haut au-dessus de la barre */
  transition: transform .22s cubic-bezier(.34,1.56,.64,1), box-shadow .2s;
  flex-shrink: 0;
}
.bnav-revision:hover .bnav-revision-circle {
  transform: scale(1.1);
  box-shadow: 0 10px 32px rgba(83,74,183,.6), 0 3px 10px rgba(0,0,0,.2), 0 0 0 5px var(--bg-surface);
}
.bnav-revision:active .bnav-revision-circle { transform: scale(.91); }
/* Pas d'indicateur de ligne sur Révision (le cercle suffit) */
.bnav-revision.active::after { display: none; }
.bnav-revision.active .bnav-revision-circle {
  box-shadow:
    0 8px 28px rgba(83,74,183,.65),
    0 2px 8px  rgba(0,0,0,.2),
    0 0 0 5px var(--bg-surface),
    0 0 0 7px var(--accent);
}

/* FAB — coin bas-droit, flotte au-dessus de la nav */
.tinder-fab {
  position: absolute;
  bottom: calc(var(--bnav-h) + 14px);
  right: 18px;
  z-index: 200;
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, #C084FC 100%);
  color: #fff; font-size: 1.45rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,.22), 0 2px 8px rgba(0,0,0,.14);
  transition: all .22s cubic-bezier(.34,1.56,.64,1);
}
.tinder-fab:hover { transform: scale(1.12) rotate(45deg); box-shadow: 0 8px 28px rgba(0,0,0,.28); }
.tinder-fab:active { transform: scale(.93); }

/* ================================================================
   DETAIL BOTTOM SHEET
   ================================================================ */
.detail-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.detail-overlay.hidden { display: none; }

.detail-sheet {
  position: fixed; inset: auto 0 0 0; z-index: 501;
  width: 100%; max-width: 520px;
  margin: 0 auto;          /* centre horizontalement sans transform */
  background: var(--bg-surface);
  border-radius: 24px 24px 0 0;
  max-height: 90dvh;
  display: flex; flex-direction: column;
  box-shadow: 0 -12px 60px rgba(0,0,0,.25);
}
.detail-sheet.hidden { display: none; }

.detail-drag-handle {
  width: 40px; height: 4px; border-radius: 2px;
  background: var(--border);
  margin: 12px auto 0;
  flex-shrink: 0;
  cursor: grab;
}

.detail-sheet-header {
  padding: 14px 20px 16px;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  flex-shrink: 0;
}

.detail-close-btn {
  position: absolute; top: 12px; right: 16px;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--bg-hover); color: var(--text-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: all .15s;
}
.detail-close-btn:hover { background: var(--border); color: var(--text-1); }

.detail-header-meta {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
  padding-right: 42px;
}

.detail-subject {
  font-size: .7rem; color: var(--text-3);
  background: var(--bg-hover); border: 1px solid var(--border-subtle);
  padding: 2px 8px; border-radius: 99px; font-weight: 600;
}

.detail-type-badge {
  font-size: .67rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .05em; padding: 2px 8px; border-radius: 99px;
  border: 1px solid currentColor;
}

.detail-title {
  font-family: var(--font-display);
  font-size: 1.2rem; font-weight: 800;
  letter-spacing: -.025em; line-height: 1.25;
  color: var(--text-1); padding-right: 40px;
}

.detail-sheet-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 32px;
  display: flex; flex-direction: column; gap: 16px;
}

.detail-content {
  font-family: var(--font-card);
  font-size: 1.05rem; line-height: 1.75;
  color: var(--text-2);
}
.detail-content p { margin-bottom: 10px; }
.detail-content ul, .detail-content ol { padding-left: 1.4em; margin-bottom: 10px; }
.detail-content strong { color: var(--text-1); font-weight: 700; }
.detail-content em { color: var(--accent); }
.detail-content code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: .82em; background: var(--bg-hover);
  border: 1px solid var(--border-subtle); padding: 1px 5px;
  border-radius: 4px; color: var(--accent);
}

/* Action row in detail sheet */
.detail-action-row {
  display: flex; gap: 10px; flex-wrap: wrap;
  padding-top: 4px;
}
.detail-action-btn {
  flex: 1; min-width: 140px;
  display: flex; align-items: center; justify-content: center; gap: 7px;
  padding: 12px 16px; border-radius: 14px;
  font-weight: 700; font-size: .88rem;
  transition: all .18s;
}
.btn-learn {
  background: linear-gradient(135deg, var(--accent) 0%, #C084FC 100%);
  color: #fff;
}
.btn-learn:hover { opacity: .88; transform: translateY(-1px); }

.btn-fav-sheet {
  background: var(--bg-hover); color: var(--text-2);
  border: 1.5px solid var(--border);
}
.btn-fav-sheet:hover { border-color: var(--swipe-hard); color: var(--swipe-hard); background: rgba(255,78,106,.06); }
.btn-fav-sheet.is-fav { color: var(--swipe-hard); border-color: var(--swipe-hard); background: rgba(255,78,106,.08); }

/* ================================================================
   TOC LIST (Fiches view)
   ================================================================ */
.toc-list { padding: 12px 14px; }
.toc-select {
  padding: 6px 10px; border-radius: 10px;
  background: var(--bg-surface); border: 1px solid var(--border);
  color: var(--text-1); font-family: var(--font-body); font-size: .8rem;
  cursor: pointer; outline: none;
}

/* ================================================================
   CARDS GRID (Favorites)
   ================================================================ */
.cards-grid { padding: 12px 14px; }

/* ================================================================
   SETTINGS & PROGRESS — keep existing styles but adjust padding
   ================================================================ */
.settings-sections { padding: 12px 16px 80px; }
.progress-grid { padding: 12px 14px 80px; }

/* ================================================================
   QUIZ VIEW
   ================================================================ */
#view-quiz #quiz-container { padding: 12px 14px 80px; }

/* ================================================================
   CHAT VIEW
   ================================================================ */
#view-chat {
  display: flex; flex-direction: column;
}
#view-chat .chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
}
#view-chat .chat-input-area {
  flex-shrink: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-base);
  display: flex; gap: 8px; align-items: flex-end;
}
#view-chat .chat-input-area textarea {
  flex: 1;
}

/* ================================================================
   ANNOTATION ZONE
   ================================================================ */
.annotation-zone {
  border-radius: var(--radius-sm); padding: 10px;
  border: 1px solid var(--border-subtle);
}
.annotation-zone.yellow { background: #FEFCE8; border-color: #FDE68A; }
.annotation-zone.blue   { background: #EFF6FF; border-color: #BFDBFE; }
.annotation-zone.green  { background: #F0FDF4; border-color: #BBF7D0; }
.annotation-zone.pink   { background: #FDF2F8; border-color: #FBCFE8; }
[data-theme="dark"] .annotation-zone.yellow { background: rgba(253,230,138,.07); border-color: rgba(253,230,138,.2); }
[data-theme="dark"] .annotation-zone.blue   { background: rgba(191,219,254,.07); border-color: rgba(191,219,254,.2); }
[data-theme="dark"] .annotation-zone.green  { background: rgba(187,247,208,.07); border-color: rgba(187,247,208,.2); }
[data-theme="dark"] .annotation-zone.pink   { background: rgba(251,207,232,.07); border-color: rgba(251,207,232,.2); }
.annotation-colors { display: flex; gap: 6px; margin-top: 7px; }
.annotation-color-dot {
  width: 22px; height: 22px; border-radius: 50%; border: 2px solid transparent;
  transition: all .15s; cursor: pointer;
}
.annotation-color-dot.active { border-color: var(--text-1); transform: scale(1.15); }

/* ================================================================
   UPLOAD MODAL (keep existing styles)
   ================================================================ */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius); padding: 36px 24px;
  text-align: center; cursor: pointer;
  transition: all .18s;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.drop-zone:hover, .drop-zone.drag-over { border-color: var(--accent); background: var(--accent-light); }
.drop-zone .ti { font-size: 2.5rem; color: var(--text-3); }
.drop-zone p { font-size: .9rem; color: var(--text-2); }
.drop-zone small { font-size: .76rem; color: var(--text-3); }
.upload-filename { font-weight: 600; font-size: .9rem; color: var(--text-1); margin-bottom: 10px; }
.upload-stage { font-size: .82rem; color: var(--text-3); margin-top: 8px; text-align: center; }
.progress-bar-container { background: var(--bg-hover); border-radius: 99px; height: 6px; overflow: hidden; }
.progress-bar-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width .5s ease; }

/* ================================================================
   TOAST
   ================================================================ */
#toast-container {
  position: fixed; bottom: calc(var(--bnav-h) + 16px); right: 16px; z-index: 9999;
  display: flex; flex-direction: column; align-items: flex-end; gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--text-1); color: var(--bg-base);
  padding: 10px 16px; border-radius: 12px;
  font-size: .85rem; font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: toast-in .35s cubic-bezier(.34,1.56,.64,1);
  max-width: 280px;
}
.toast.success { background: #16a34a; color: #fff; }
.toast.error   { background: #dc2626; color: #fff; }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(30px) scale(.9); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

/* ================================================================
   AUTH — écran "demande en attente"
   ================================================================ */
.auth-pending {
  text-align: center;
  padding: 10px 0 4px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.auth-pending .ti {
  font-size: 3rem; color: var(--accent);
}
.auth-pending h3 {
  font-family: var(--font-display);
  font-size: 1.15rem; font-weight: 800;
  color: var(--text-1); margin: 0;
}
.auth-pending p {
  font-size: .85rem; color: var(--text-2); line-height: 1.5; margin: 0;
}

/* ================================================================
   ADMIN — panel dans les paramètres
   ================================================================ */
.admin-section h3 {
  display: flex; align-items: center; gap: 7px;
}
.admin-section-desc {
  font-size: .82rem; color: var(--text-3); margin-bottom: 12px;
}
.admin-requests-list {
  display: flex; flex-direction: column; gap: 10px;
}
.admin-empty {
  font-size: .85rem; color: var(--text-3);
}
.admin-request-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap;
  padding: 12px 14px; border-radius: 12px;
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
}
.admin-request-info {
  display: flex; align-items: center; gap: 8px;
  font-size: .85rem; color: var(--text-1); font-weight: 600;
}
.admin-request-email {
  display: block;
  font-size: .72rem; color: var(--text-3); font-weight: 400;
}
.admin-request-date {
  font-size: .72rem; color: var(--text-3); font-weight: 400;
  white-space: nowrap; margin-left: auto;
}
.admin-request-actions {
  display: flex; gap: 8px;
}
.btn-approve, .btn-reject {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 14px; border-radius: 99px;
  font-size: .8rem; font-weight: 700;
  transition: all .18s;
}
.btn-approve {
  background: rgba(22,163,74,.12); color: #16a34a;
  border: 1.5px solid #16a34a;
}
.btn-approve:hover { background: rgba(22,163,74,.22); }
.btn-reject {
  background: rgba(220,38,38,.08); color: #dc2626;
  border: 1.5px solid #dc2626;
}
.btn-reject:hover { background: rgba(220,38,38,.18); }
.btn-approve:disabled, .btn-reject:disabled { opacity: .5; cursor: not-allowed; }

/* ================================================================
   EMPTY STATE
   ================================================================ */
.empty-state {
  text-align: center; padding: 60px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--text-3);
}
.empty-state .ti { font-size: 2.5rem; }
.empty-state h3 { font-size: 1rem; font-weight: 700; color: var(--text-2); }
.empty-state p { font-size: .85rem; }

/* ================================================================
   RESPONSIVE TWEAKS
   ================================================================ */
/* ================================================================
   CHAPTER GROUPS (TOC / Fiches view)
   ================================================================ */
.chapter-group { margin-bottom: 14px; }

.chapter-header {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px; border-radius: 12px;
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
  cursor: pointer; transition: background .15s;
  font-size: .85rem; font-weight: 700; color: var(--text-1);
}
.chapter-header:hover { background: var(--bg-hover); }
.chapter-subject-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.chapter-title-text { flex: 1; }
.chapter-count {
  font-size: .72rem; font-weight: 600; color: var(--text-3);
  background: var(--bg-hover); padding: 2px 8px; border-radius: 99px;
}

.chapter-cards {
  padding: 8px 0 0 8px;
  display: flex; flex-direction: column; gap: 8px;
}
.chapter-cards.hidden { display: none; }

/* Postit cards in list views */
.postit-card {
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent);
  background: var(--bg-surface);
  padding: 14px 14px 10px;
  box-shadow: var(--shadow-xs);
  transition: all .15s;
}
.postit-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.postit-card[data-type="formule"]    { border-left-color: #534AB7; }
.postit-card[data-type="règle"]      { border-left-color: #C2620A; }
.postit-card[data-type="résumé"]     { border-left-color: #1A7A45; }
.postit-card[data-type="définition"] { border-left-color: #1761A0; }
.postit-card[data-type="schéma"]     { border-left-color: #8B3BAB; }

/* Favorites: content preview line */
.fav-preview {
  font-size: .83rem;
  line-height: 1.6;
  color: var(--text-2);
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ================================================================
   PROGRESS CARDS — override padding
   ================================================================ */
.progress-card {
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
  border-radius: 16px; padding: 18px; box-shadow: var(--shadow-xs);
}

@media (max-width: 380px) {
  .card-title { font-size: .98rem; }
  .swipe-btn { width: 60px; height: 60px; font-size: 1.3rem; }
  .tinder-fab { width: 48px; height: 48px; font-size: 1.3rem; }
}

@media (min-width: 600px) {
  .tinder-app {
    height: 100dvh;
  }
  .detail-sheet {
    border-radius: 24px;
    bottom: 20px;
    max-height: 85dvh;
  }
}