/* =========================================================================
   Réviseur Agrég — feuille de styles
   ========================================================================= */

/* ---------- Design tokens ---------- */
:root {
  --bg:        #f4f6fb;
  --surface:   #ffffff;
  --surface-2: #f8fafc;
  --border:    #e6e9f0;
  --text:      #1c2434;
  --text-soft: #5b6472;
  --muted:     #8a93a3;
  --primary:   #4f46e5;
  --primary-d: #4338ca;
  --primary-soft:#eef0ff;
  --accent:    #0d9488;
  --danger:    #e11d48;
  --success:   #16a34a;
  --warn:      #d97706;
  --radius:    16px;
  --radius-sm: 10px;
  --shadow:    0 1px 2px rgba(20,30,60,.04), 0 8px 24px rgba(20,30,60,.06);
  --shadow-lg: 0 12px 40px rgba(20,30,60,.14);
  --sidebar-w: 250px;
  --font:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

:root.dark {
  --bg:        #0f1420;
  --surface:   #161c2b;
  --surface-2: #1c2436;
  --border:    #29324a;
  --text:      #e8ecf4;
  --text-soft: #a9b2c4;
  --muted:     #6f7a90;
  --primary:   #7c83ff;
  --primary-d: #6366f1;
  --primary-soft:#20263c;
  --shadow:    0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.5);
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
h1 { font-size: 1.7rem; letter-spacing: -.02em; }
h2 { font-size: 1.15rem; letter-spacing: -.01em; }
h3 { font-size: 1rem; }
.muted { color: var(--muted); }
.link { color: var(--primary); font-weight: 600; cursor: pointer; }
.link:hover { text-decoration: underline; }
kbd {
  font-family: var(--font); font-size: .68rem; background: rgba(0,0,0,.08);
  border-radius: 5px; padding: 1px 5px; opacity: .7;
}
:root.dark kbd { background: rgba(255,255,255,.12); }

/* ---------- Layout ---------- */
#app { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 20px 14px;
  position: fixed; top: 0; bottom: 0; left: 0;
  z-index: 40;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 6px 10px 22px; }
.brand__logo { width: 30px; height: 30px; object-fit: contain; display: block; flex-shrink: 0; }
.brand__name { font-size: 1.2rem; font-weight: 700; letter-spacing: -.02em; }

.nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav__item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  color: var(--text-soft); font-weight: 500; font-size: .93rem;
  cursor: pointer; border: none; background: none; width: 100%; text-align: left;
  transition: background .15s, color .15s;
}
.nav__item:hover { background: var(--surface-2); color: var(--text); }
.nav__item.is-active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav__icon { font-size: 1.1rem; width: 22px; text-align: center; }
.sidebar__foot { padding-top: 14px; border-top: 1px solid var(--border); }
.nav__item--btn { background: var(--primary); color: #fff; justify-content: flex-start; }
.nav__item--btn:hover { background: var(--primary-d); color: #fff; }

.main { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: 58px; display: flex; align-items: center; gap: 10px;
  padding: 0 24px; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 30;
}
.topbar__spacer { flex: 1; }
.icon-btn.topbar__menu { display: none; }
.topbar__brand { display: none; align-items: center; gap: 8px; font-size: 1.1rem; font-weight: 700; letter-spacing: -.01em; }
.topbar__logo { width: 24px; height: 24px; object-fit: contain; display: block; flex-shrink: 0; }
/* En mode sombre, le logo (foncé) est posé sur une petite tuile claire pour rester lisible */
:root.dark .brand__logo, :root.dark .topbar__logo { background: #fff; border-radius: 7px; padding: 2px; }
.view { padding: 28px 32px 64px; max-width: 1080px; width: 100%; margin: 0 auto; }

.sidebar-scrim { display: none; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font); font-size: .9rem; font-weight: 600;
  padding: 9px 16px; border-radius: var(--radius-sm); border: 1px solid transparent;
  cursor: pointer; transition: transform .05s, background .15s, box-shadow .15s; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-d); }
.btn--soft { background: var(--primary-soft); color: var(--primary); }
.btn--soft:hover { background: color-mix(in srgb, var(--primary-soft) 70%, var(--primary) 12%); }
.btn--ghost { background: var(--surface); color: var(--text-soft); border-color: var(--border); }
.btn--ghost:hover { background: var(--surface-2); color: var(--text); }
.btn--danger { background: var(--danger); color: #fff; }
.btn--danger:hover { filter: brightness(.94); }
.btn--lg { padding: 12px 22px; font-size: .98rem; }
.btn--sm { padding: 6px 12px; font-size: .82rem; }
.btn--block { width: 100%; }

.icon-btn {
  background: none; border: none; cursor: pointer; font-size: 1rem;
  width: 34px; height: 34px; border-radius: 9px; display: inline-flex;
  align-items: center; justify-content: center; color: var(--text-soft);
  transition: background .15s;
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn:disabled { opacity: .3; cursor: not-allowed; }

/* ---------- En-têtes de page ---------- */
.page-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 16px; margin-bottom: 24px; flex-wrap: wrap;
}
.page-head h1 { margin-bottom: 2px; }
.page-head__actions { display: flex; gap: 8px; flex-wrap: wrap; }

.detail-head {
  display: flex; align-items: center; gap: 16px; margin-bottom: 20px; flex-wrap: wrap;
}
.detail-head__actions { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.back { font-size: .9rem; }
.editor-title { font-size: 1.3rem; }

/* ---------- Cartes ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.card__head h2 { display: flex; align-items: center; gap: 8px; }
.count {
  background: var(--primary-soft); color: var(--primary); font-size: .8rem;
  padding: 1px 9px; border-radius: 20px; font-weight: 700;
}

/* ---------- Bannière d'accueil ---------- */
.banner {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  background: linear-gradient(120deg, var(--primary), var(--accent)); color: #fff; border: none;
}
.banner h2 { color: #fff; }
.banner p { opacity: .92; max-width: 46ch; }
.banner__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.banner .btn--primary { background: #fff; color: var(--primary); }
.banner .btn--ghost { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.3); }

/* ---------- Statistiques (tuiles) ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.stat {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; display: flex; flex-direction: column; gap: 2px; box-shadow: var(--shadow);
  transition: transform .12s, box-shadow .12s;
}
a.stat:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.stat__icon { font-size: 1.3rem; }
.stat__value { font-size: 1.9rem; font-weight: 800; letter-spacing: -.03em; }
.stat__label { color: var(--muted); font-size: .85rem; }

/* ---------- Colonnes tableau de bord ---------- */
.dash-cols { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; }
.review-card { display: flex; flex-direction: column; }
.review-card__top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.review-card__actions { display: flex; gap: 10px; margin-top: auto; flex-wrap: wrap; }

.ring {
  --pct: 0; width: 74px; height: 74px; border-radius: 50%; flex-shrink: 0;
  background: conic-gradient(var(--primary) calc(var(--pct) * 1%), var(--surface-2) 0);
  display: grid; place-items: center; position: relative;
}
.ring::before { content: ''; position: absolute; inset: 8px; background: var(--surface); border-radius: 50%; }
.ring span { position: relative; font-weight: 800; font-size: 1.1rem; }
.ring small { font-weight: 500; color: var(--muted); font-size: .7rem; }

.countdown {
  text-align: right; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 18px; box-shadow: var(--shadow);
}
.countdown__big { display: block; font-size: 1.5rem; font-weight: 800; color: var(--primary); letter-spacing: -.02em; }
.countdown__label { font-size: .78rem; color: var(--muted); }

/* ---------- Barres de progression ---------- */
.progress-list { display: flex; flex-direction: column; gap: 14px; }
.progress-row { display: grid; grid-template-columns: 1fr 42px; align-items: center; gap: 10px 12px; }
.progress-row__head { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; font-size: .9rem; }
.progress-row__name { font-weight: 600; }
.progress-row__meta { margin-left: auto; color: var(--muted); font-size: .8rem; }
.progress-row__pct { font-weight: 700; font-size: .85rem; text-align: right; color: var(--text-soft); }
.dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.bar { height: 8px; background: var(--surface-2); border-radius: 20px; overflow: hidden; }
.bar__fill { height: 100%; border-radius: 20px; transition: width .4s ease; }

/* ---------- Heatmap ---------- */
.heatmap { display: flex; gap: 3px; margin: 14px 0 8px; overflow-x: auto; padding-bottom: 4px; }
.heat-col { display: flex; flex-direction: column; gap: 3px; }
.heat-cell { width: 13px; height: 13px; border-radius: 3px; background: var(--surface-2); }
.heat-1 { background: color-mix(in srgb, var(--primary) 30%, var(--surface-2)); }
.heat-2 { background: color-mix(in srgb, var(--primary) 55%, var(--surface-2)); }
.heat-3 { background: color-mix(in srgb, var(--primary) 78%, var(--surface-2)); }
.heat-4 { background: var(--primary); }
.heat-future { opacity: .35; }
.heat-legend { display: flex; align-items: center; gap: 4px; font-size: .74rem; color: var(--muted); }
.heat-legend .heat-cell { width: 11px; height: 11px; }

/* ---------- Barre d'outils / recherche ---------- */
.toolbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.input {
  font-family: var(--font); font-size: .92rem; color: var(--text);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 9px 12px; width: 100%; transition: border .15s, box-shadow .15s;
}
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.input--sm { width: auto; max-width: 180px; }
select.input { cursor: pointer; }
.search { flex: 1; min-width: 220px; }
.toolbar select.input { width: auto; }

/* ---------- Chips (filtres thème) ---------- */
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.chip {
  --chip: var(--muted);
  border: 1px solid var(--border); background: var(--surface); color: var(--text-soft);
  padding: 6px 13px; border-radius: 20px; font-size: .84rem; font-weight: 600; cursor: pointer;
  transition: all .15s;
}
.chip:hover { border-color: var(--chip); color: var(--chip); }
.chip.is-active { background: var(--chip); border-color: var(--chip); color: #fff; }
.chip[data-theme=""].is-active { background: var(--primary); border-color: var(--primary); }

/* ---------- Grille de cours ---------- */
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.course-card {
  --accent: var(--primary);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); display: flex; flex-direction: column; overflow: hidden;
  border-top: 3px solid var(--accent); transition: transform .12s, box-shadow .12s;
}
.course-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.course-card__link { padding: 18px 18px 12px; display: block; flex: 1; }
.course-card h3 { margin: 10px 0 8px; line-height: 1.3; }
.course-card__excerpt { color: var(--text-soft); font-size: .88rem; line-height: 1.45; }
.course-card__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 10px 14px 12px; border-top: 1px solid var(--border);
}
.course-card__meta { font-size: .78rem; color: var(--muted); }
.course-card__tools { display: flex; gap: 2px; }

.badge {
  display: inline-block; font-size: .72rem; font-weight: 700; padding: 3px 10px;
  border-radius: 20px; background: var(--primary-soft); color: var(--primary);
}
.badge--lg { font-size: .8rem; padding: 4px 12px; }

/* ---------- Cartes vides ---------- */
.empty-card {
  background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius);
  padding: 48px 24px; text-align: center; grid-column: 1 / -1;
}
.empty-card__icon { font-size: 2.6rem; display: block; margin-bottom: 10px; }
.empty-card h3 { margin-bottom: 6px; }
.empty-card p { margin-bottom: 16px; }
.empty-card .btn { margin: 0 4px; }

/* ---------- Détail de cours (prose markdown) ---------- */
.course-detail { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 34px; box-shadow: var(--shadow); margin-bottom: 20px; }
.course-meta { font-size: .82rem; margin: 8px 0 4px; }
.meta-label { text-transform: uppercase; letter-spacing: .06em; font-size: .72rem; color: var(--muted); margin: 16px 0 6px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 4px; }
.tag { font-size: .78rem; padding: 3px 10px; border-radius: 8px; background: var(--surface-2); color: var(--text-soft); border: 1px solid var(--border); }
.tag--concept { background: var(--primary-soft); color: var(--primary); border-color: transparent; font-weight: 600; }
.tag--author { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); border-color: transparent; }

.prose { line-height: 1.7; color: var(--text); }
.prose > *:first-child { margin-top: 0; }
.prose h1 { font-size: 1.6rem; margin: 26px 0 12px; }
.prose h2 { font-size: 1.28rem; margin: 24px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.prose h3 { font-size: 1.08rem; margin: 20px 0 8px; }
.prose h4 { font-size: .98rem; margin: 16px 0 6px; }
.prose p { margin: 10px 0; }
.prose ul, .prose ol { margin: 10px 0 10px 24px; }
.prose li { margin: 4px 0; }
.prose a { color: var(--primary); text-decoration: underline; }
.prose code { background: var(--surface-2); border: 1px solid var(--border); padding: 1px 6px; border-radius: 6px; font-size: .88em; font-family: ui-monospace, 'SF Mono', Menlo, monospace; }
.prose pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; overflow-x: auto; margin: 12px 0; }
.prose pre code { background: none; border: none; padding: 0; }
.prose blockquote {
  border-left: 4px solid var(--primary); background: var(--primary-soft);
  padding: 10px 16px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 14px 0; color: var(--text-soft);
}
.prose hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.table-wrap { overflow-x: auto; margin: 14px 0; }
.prose table { border-collapse: collapse; width: 100%; font-size: .9rem; }
.prose th, .prose td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.prose th { background: var(--surface-2); font-weight: 700; }
.prose tbody tr:nth-child(even) { background: var(--surface-2); }

.mini-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.mini-list li { padding: 10px 12px; background: var(--surface-2); border-radius: var(--radius-sm); font-size: .9rem; }

/* ---------- Éditeur de cours ---------- */
.editor { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.editor__form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 5px; }
.field > span { font-size: .82rem; font-weight: 600; color: var(--text-soft); }
.field > span small { font-weight: 400; color: var(--muted); }
.field--grow { flex: 1; }
.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 160px; }
.field--btn { justify-content: flex-end; }
.field--btn .btn { margin-top: auto; }
.textarea-content { min-height: 340px; resize: vertical; font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: .88rem; line-height: 1.6; }
.editor__actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.save-hint { font-size: .8rem; }
.editor__preview {
  position: sticky; top: 78px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow); max-height: calc(100vh - 110px); overflow-y: auto;
}
.preview-label { text-transform: uppercase; letter-spacing: .08em; font-size: .7rem; color: var(--muted); margin-bottom: 12px; font-weight: 700; }

textarea.input { resize: vertical; }

/* ---------- Session de révision ---------- */
.session { max-width: 680px; margin: 0 auto; }
.session__bar-top { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.session__progress { flex: 1; height: 8px; background: var(--surface-2); border-radius: 20px; overflow: hidden; }
.session__progress-fill { height: 100%; background: var(--primary); border-radius: 20px; transition: width .3s; }
.session__count { font-size: .85rem; font-weight: 700; color: var(--text-soft); }

.flashcard {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 34px; min-height: 260px; margin-bottom: 18px;
}
.flashcard__meta { font-size: .82rem; color: var(--muted); display: flex; align-items: center; gap: 6px; margin-bottom: 18px; }
.flashcard__front { font-size: 1.25rem; font-weight: 600; line-height: 1.5; }
.flashcard__front p { margin: 0; }
.flashcard__sep { border: none; border-top: 1px dashed var(--border); margin: 20px 0; }
.flashcard__back { font-size: 1.05rem; line-height: 1.6; color: var(--text-soft); animation: fadeIn .2s; }
.flashcard__back p:first-of-type { margin-top: 0; }

.session__controls { display: flex; flex-direction: column; gap: 10px; }
.grade-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.grade-btn {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 12px 6px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--surface); cursor: pointer; font-family: var(--font); transition: transform .05s, box-shadow .15s;
}
.grade-btn:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.grade-btn:active { transform: translateY(0); }
.grade-btn__label { font-weight: 700; font-size: .92rem; }
.grade-btn__interval { font-size: .74rem; color: var(--muted); }
.grade-btn kbd { margin-top: 2px; }
.grade--again { border-bottom: 3px solid var(--danger); }
.grade--hard  { border-bottom: 3px solid var(--warn); }
.grade--good  { border-bottom: 3px solid var(--success); }
.grade--easy  { border-bottom: 3px solid var(--primary); }

/* ---------- Écran de fin ---------- */
.finish { max-width: 560px; margin: 40px auto; text-align: center; }
.finish__badge { font-size: 3.4rem; margin-bottom: 8px; }
.finish h1 { margin-bottom: 6px; }
.finish__actions { display: flex; gap: 10px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }
.review-errors { text-align: left; margin-top: 26px; }
.review-errors h3 { margin-bottom: 12px; }
.review-errors .ok { color: var(--success); font-weight: 600; }

/* ---------- Tuiles de révision par thème ---------- */
.theme-review-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.review-tile {
  --accent: var(--primary);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); border-left: 4px solid var(--accent);
  display: flex; flex-direction: column; gap: 12px;
}
.review-tile__head { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: .95rem; }
.review-tile__stats { display: flex; flex-direction: column; gap: 2px; }
.review-tile__due { font-weight: 700; color: var(--primary); font-size: .9rem; }

/* ---------- Gestion fiches / QCM (lignes) ---------- */
.fc-rows { display: flex; flex-direction: column; gap: 8px; }
.fc-row {
  display: flex; align-items: center; gap: 10px; padding: 11px 14px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.fc-row__text { flex: 1; min-width: 0; font-size: .9rem; }
.fc-row__text strong { font-weight: 600; }
.fc-row__tools { display: flex; gap: 2px; }
.pill { font-size: .72rem; padding: 2px 9px; border-radius: 20px; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.pill--due { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); font-weight: 600; }

/* ---------- QCM ---------- */
.quiz-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 30px; }
.quiz-question { margin: 12px 0 6px; line-height: 1.4; }
.quiz-hint { font-size: .8rem; margin-bottom: 10px; }
.quiz-choices { display: flex; flex-direction: column; gap: 10px; margin: 16px 0; }
.choice {
  display: flex; align-items: center; gap: 12px; text-align: left;
  padding: 13px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--surface); cursor: pointer; font-family: var(--font); font-size: .95rem;
  color: var(--text); transition: border .15s, background .15s;
}
.choice:hover:not(.is-locked) { border-color: var(--primary); background: var(--primary-soft); }
.choice__marker {
  width: 26px; height: 26px; border-radius: 7px; background: var(--surface-2);
  display: grid; place-items: center; font-weight: 700; font-size: .82rem; flex-shrink: 0; color: var(--text-soft);
}
.choice.is-selected { border-color: var(--primary); background: var(--primary-soft); }
.choice.is-selected .choice__marker { background: var(--primary); color: #fff; }
.choice.is-locked { cursor: default; }
.choice.is-correct { border-color: var(--success); background: color-mix(in srgb, var(--success) 12%, transparent); }
.choice.is-correct .choice__marker { background: var(--success); color: #fff; }
.choice.is-wrong { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); }
.choice.is-wrong .choice__marker { background: var(--danger); color: #fff; }
.quiz-actions { margin-top: 16px; display: flex; flex-direction: column; gap: 12px; }
.quiz-feedback { padding: 12px 16px; border-radius: var(--radius-sm); font-weight: 600; font-size: .9rem; }
.quiz-feedback.is-correct { background: color-mix(in srgb, var(--success) 12%, transparent); color: var(--success); }
.quiz-feedback.is-wrong { background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger); }
.quiz-feedback p { font-weight: 400; color: var(--text-soft); margin-top: 6px; }

.attempt-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.attempt-list li { display: flex; align-items: center; gap: 12px; }
.attempt__score { font-weight: 800; font-size: 1.1rem; width: 54px; }
.attempt__score--good { color: var(--success); }
.attempt__score--mid { color: var(--warn); }
.attempt__score--bad { color: var(--danger); }
.attempt__meta { font-size: .86rem; }

/* Éditeur QCM */
.choice-edit { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.choice-check { width: 18px; height: 18px; accent-color: var(--success); cursor: pointer; flex-shrink: 0; }
.choice-edit__letter { width: 22px; font-weight: 700; color: var(--muted); text-align: center; }
.choice-input { flex: 1; }
.choice-remove { flex-shrink: 0; }

/* ---------- Dissertation ---------- */
.methodo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.methodo-item { background: var(--surface-2); border-radius: var(--radius-sm); padding: 14px 16px; }
.methodo-item h4 { color: var(--primary); margin-bottom: 4px; }
.methodo-item p { font-size: .85rem; }

.timer { display: flex; align-items: center; gap: 8px; margin-left: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 6px 8px 6px 14px; box-shadow: var(--shadow); }
.timer__display { font-variant-numeric: tabular-nums; font-weight: 800; font-size: 1.1rem; letter-spacing: .02em; min-width: 62px; }
.diss-workspace { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 34px; box-shadow: var(--shadow); }
.diss-subject { margin: 10px 0 22px; line-height: 1.3; }
.plan-block { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 14px; background: var(--surface-2); }
.plan-block h3 { margin-bottom: 10px; color: var(--primary); }
.plan-block--intro { border-left: 4px solid var(--accent); }
.plan-block--ccl { border-left: 4px solid var(--warn); }
.plan-block .field { margin-bottom: 10px; }
.plan-block .field:last-child { margin-bottom: 0; }
.plan-part { border-left: 4px solid var(--primary); }
.plan-part__head { display: flex; gap: 8px; margin-bottom: 8px; }
.plan-part__title { font-weight: 700; }
#add-part { margin-bottom: 14px; }

/* ---------- Statistiques (page) ---------- */
.vbar-chart { display: flex; align-items: flex-end; gap: 3px; height: 160px; padding-top: 10px; }
.vbar-col { flex: 1; display: flex; flex-direction: column; align-items: center; height: 100%; justify-content: flex-end; gap: 4px; }
.vbar { width: 100%; max-width: 22px; background: var(--primary); border-radius: 4px 4px 0 0; min-height: 2px; transition: height .3s; }
.vbar-col:hover .vbar { background: var(--primary-d); }
.vbar-label { font-size: .62rem; color: var(--muted); height: 12px; }

.stack-bar { display: flex; height: 9px; border-radius: 20px; overflow: hidden; background: var(--surface-2); grid-column: 1 / 2; }
.stack { height: 100%; }
.stack--mature { background: var(--success); }
.stack--young { background: var(--warn); }
.stack--fresh { background: var(--surface-2); }
.legend-inline { font-size: .74rem; color: var(--muted); display: flex; align-items: center; gap: 4px; }
.lg { width: 10px; height: 10px; border-radius: 3px; display: inline-block; margin-left: 6px; }
.lg--mature { background: var(--success); }
.lg--young { background: var(--warn); }
.lg--fresh { background: var(--surface-2); border: 1px solid var(--border); }

.quiz-history { display: flex; flex-direction: column; gap: 8px; }
.quiz-history__row { display: flex; align-items: center; gap: 12px; }
.quiz-history__bar-wrap { flex: 1; background: var(--surface-2); border-radius: 20px; overflow: hidden; height: 22px; }
.quiz-history__bar { height: 100%; border-radius: 20px; min-width: 3%; }
.quiz-history__bar--good { background: var(--success); }
.quiz-history__bar--mid { background: var(--warn); }
.quiz-history__bar--bad { background: var(--danger); }
.quiz-history__label { font-size: .82rem; width: 220px; }

/* Compte à rebours examen (page stats) */
.exam-card { display: flex; flex-direction: column; gap: 6px; border-left: 4px solid var(--primary); }
.exam-card__big { font-size: 1.9rem; font-weight: 800; color: var(--primary); letter-spacing: -.02em; }
.exam-card p { margin: 0; }

/* Mini-statistiques (état des fiches, dissertation) */
.ministat-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.ministat { flex: 1; min-width: 130px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 11px 14px; }
.ministat b { display: block; font-size: 1.5rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.ministat span { font-size: .78rem; color: var(--muted); }
.ministat--warn b { color: var(--warn); }
.ministat--ok b { color: var(--success); }
.stack-bar--lg { height: 16px; }
.stat-cta { margin-top: 14px; }
.stat-hint { font-size: .78rem; margin-top: 10px; }

/* Prévision des révisions */
.vbar-chart--forecast { align-items: flex-end; }
.vbar-val { font-size: .66rem; color: var(--text-soft); height: 13px; line-height: 13px; font-weight: 700; }

/* Maîtrise & priorités par thème */
.tstat { display: flex; align-items: center; gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--border); }
.tstat:last-child { border-bottom: none; }
.tstat__main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 7px; }
.tstat__head { display: flex; align-items: center; gap: 8px; font-size: .9rem; }
.tstat__name { font-weight: 600; }
.tstat__head .meta { margin-left: auto; color: var(--muted); font-size: .8rem; white-space: nowrap; }
.tstat__cta { flex-shrink: 0; }
.pill--ok { background: color-mix(in srgb, var(--success) 16%, transparent); color: var(--success); font-weight: 600; }

/* Performance QCM par thème */
.qtheme { display: grid; grid-template-columns: minmax(0, 1.2fr) 2fr 42px; align-items: center; gap: 12px; padding: 9px 0; }
.qtheme__name { display: flex; align-items: center; gap: 6px; font-size: .88rem; min-width: 0; }
.qtheme__name small { flex-shrink: 0; }
.qtheme__pct { font-weight: 700; font-size: .85rem; text-align: right; }
.qbar--good { background: var(--success); }
.qbar--mid { background: var(--warn); }
.qbar--bad { background: var(--danger); }

/* Couverture du programme */
.coverage-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 12px; }
.coverage-head b { font-size: 1.9rem; font-weight: 800; letter-spacing: -.02em; }
a.tag { transition: border-color .15s, background .15s; }
a.tag:hover { background: var(--surface-2); }

/* ---------- Réglages ---------- */
.settings-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.settings-row:last-child { border-bottom: none; }
.settings-row p { font-size: .82rem; }
.settings-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.danger-zone { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px; margin-top: 8px; border: 1px solid color-mix(in srgb, var(--danger) 30%, transparent); border-radius: var(--radius-sm); background: color-mix(in srgb, var(--danger) 5%, transparent); }
.danger-zone p { font-size: .82rem; }

.theme-manage { display: flex; flex-direction: column; gap: 8px; margin: 12px 0; }
.theme-edit { display: flex; align-items: center; gap: 10px; }
.theme-color { width: 34px; height: 34px; border: 1px solid var(--border); border-radius: 8px; padding: 2px; background: none; cursor: pointer; flex-shrink: 0; }
.theme-name { flex: 1; }
.theme-count { width: 30px; text-align: center; font-size: .85rem; }

.switch { position: relative; display: inline-block; width: 46px; height: 26px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch__slider { position: absolute; inset: 0; background: var(--surface-2); border: 1px solid var(--border); border-radius: 20px; cursor: pointer; transition: .2s; }
.switch__slider::before { content: ''; position: absolute; height: 18px; width: 18px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .2s; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.switch input:checked + .switch__slider { background: var(--primary); border-color: var(--primary); }
.switch input:checked + .switch__slider::before { transform: translateX(20px); }

.app-footer { text-align: center; font-size: .8rem; padding: 24px 0 8px; }

/* ---------- Import Excel/CSV ---------- */
.dropzone {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 38px 20px;
  text-align: center; cursor: pointer; transition: border .15s, background .15s; margin: 6px 0 12px;
}
.dropzone:hover, .dropzone:focus { border-color: var(--primary); background: var(--primary-soft); outline: none; }
.dropzone.is-drag { border-color: var(--primary); background: var(--primary-soft); transform: scale(1.005); }
.dropzone__icon { font-size: 2.2rem; }
.import-links { display: flex; gap: 16px; }
.import-error { border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.import-error h3 { color: var(--danger); margin-bottom: 6px; }
.import-warnings { margin: 10px 0 4px; }
.import-warnings summary { cursor: pointer; font-weight: 600; color: var(--warn); font-size: .88rem; }
.import-warnings .mini-list { margin-top: 10px; }
.import-preview { display: flex; flex-direction: column; gap: 12px; margin: 6px 0 4px; max-height: 460px; overflow-y: auto; padding-right: 4px; }
.import-q { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; background: var(--surface-2); }
.import-q__title { font-weight: 600; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.import-q__choices { list-style: none; display: flex; flex-direction: column; gap: 3px; }
.import-q__choices li { font-size: .88rem; color: var(--text-soft); padding: 2px 0; }
.import-q__choices li.is-correct { color: var(--success); font-weight: 600; }
.import-q__exp { font-size: .82rem; margin-top: 6px; }

/* ---------- Assistant IA ---------- */
.plan-block__head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.plan-block__head h3 { margin-bottom: 0; }
.plan-part__head .btn--ai { flex-shrink: 0; }
.btn--ai {
  background: linear-gradient(120deg, #6d5efc, #a855f7); color: #fff; border: none;
  box-shadow: 0 2px 8px rgba(120,80,240,.28);
}
.btn--ai:hover { filter: brightness(1.06); }
.btn--ai:disabled { opacity: .6; cursor: default; }

.ai-panel {
  margin-top: 12px; border: 1px solid color-mix(in srgb, #7c3aed 30%, var(--border));
  border-radius: var(--radius-sm); background: color-mix(in srgb, #7c3aed 6%, var(--surface));
  overflow: hidden; animation: fadeIn .2s;
}
.ai-panel__head {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 9px 14px; font-weight: 700; font-size: .9rem;
  background: color-mix(in srgb, #7c3aed 12%, var(--surface)); color: var(--text);
}
.ai-panel__tools { display: flex; gap: 4px; }
.ai-panel__body { padding: 12px 14px; }
.ai-mini {
  background: none; border: none; cursor: pointer; font-size: .82rem; color: var(--text-soft);
  width: 26px; height: 26px; border-radius: 7px;
}
.ai-mini:hover { background: rgba(124,58,237,.14); color: var(--text); }
.ai-advice { padding: 12px 16px; line-height: 1.6; font-size: .92rem; }
.ai-advice > *:first-child { margin-top: 0; }
.ai-advice > *:last-child { margin-bottom: 0; }
.ai-advice strong { color: var(--text); }
.ai-disclaimer { padding: 0 16px 12px; font-size: .74rem; }
.ai-loading { display: flex; align-items: center; gap: 10px; padding: 14px 16px; color: var(--text-soft); font-size: .9rem; }
.ai-spinner {
  width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0;
  border: 2px solid color-mix(in srgb, #7c3aed 30%, transparent); border-top-color: #7c3aed;
  animation: ai-spin .7s linear infinite;
}
@keyframes ai-spin { to { transform: rotate(360deg); } }

/* Réglages IA */
.key-row { display: flex; gap: 6px; align-items: center; }
.key-row .input { flex: 1; font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: .85rem; }
.ai-test-result { font-size: .85rem; margin-top: 4px; min-height: 1.2em; }
.ai-test-result.is-ok { color: var(--success); }
.ai-test-result.is-error { color: var(--danger); }

/* ---------- Modales ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(15,20,32,.5); backdrop-filter: blur(3px);
  display: grid; place-items: center; z-index: 100; padding: 20px; opacity: 0; transition: opacity .2s;
}
.modal-overlay.is-visible { opacity: 1; }
.modal {
  background: var(--surface); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-lg);
  width: 100%; max-width: 440px; transform: translateY(8px) scale(.98); transition: transform .2s;
}
.modal-overlay.is-visible .modal { transform: none; }
.modal--form { max-width: 520px; }
.modal--wide { max-width: 640px; }
.modal__title { margin-bottom: 14px; }
.modal__body { color: var(--text-soft); margin-bottom: 20px; }
.modal__actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.modal .field { margin-bottom: 12px; }

/* ---------- Toasts ---------- */
#toast-container { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.toast {
  background: var(--text); color: var(--bg); padding: 11px 18px; border-radius: var(--radius-sm);
  font-size: .88rem; font-weight: 600; box-shadow: var(--shadow-lg); opacity: 0; transform: translateY(10px); transition: .3s;
}
.toast.is-visible { opacity: 1; transform: none; }
.toast--success { background: var(--success); color: #fff; }
.toast--error { background: var(--danger); color: #fff; }
.toast--info { background: var(--primary); color: #fff; }

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

/* ---------- Documents joints (PDF / images) ---------- */
.dropzone--sm { padding: 22px 16px; margin: 4px 0 6px; }
.doc-att-list { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.att-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 7px 12px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: .86rem; }
.att-row__name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-list { display: flex; flex-direction: column; gap: 18px; }
.doc-item { border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; background: var(--surface-2); }
.doc-item__head { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 14px; flex-wrap: wrap; }
.doc-item__name { font-weight: 600; font-size: .9rem; min-width: 0; word-break: break-word; }
.doc-item__tools { display: flex; gap: 6px; align-items: center; flex-shrink: 0; }
.doc-item__preview { background: var(--bg); min-height: 60px; display: flex; align-items: center; justify-content: center; }
.doc-item__preview .muted { padding: 20px; }
.doc-pdf { width: 100%; height: 70vh; border: none; display: block; background: #fff; }
.doc-img { width: 100%; height: auto; display: block; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .dash-cols, .editor { grid-template-columns: 1fr; }
  .editor__preview { position: static; max-height: none; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .sidebar { transform: translateX(-100%); transition: transform .25s; box-shadow: var(--shadow-lg); }
  .sidebar.is-open { transform: none; }
  .main { margin-left: 0; }
  .icon-btn.topbar__menu { display: inline-flex; }
  .topbar__brand { display: flex; }
  .view { padding: 20px 16px 60px; }
  .sidebar-scrim { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 35; opacity: 0; pointer-events: none; transition: opacity .2s; }
  .sidebar-scrim.is-visible { opacity: 1; pointer-events: auto; }
  .grade-grid { grid-template-columns: repeat(2, 1fr); }
  .quiz-history__label { width: 140px; }
}