/* =====================================================================
   Révisions PCM · STI2D 2026
   Direction artistique : claire, épurée, premium (inspiration Apple / Notion)
   ===================================================================== */
:root{
  /* — Surfaces & neutres — */
  --bg:#f4f6fb;
  --surface:#ffffff;
  --surface-2:#f3f5fb;
  --surface-3:#eaedf6;
  --border:#e9ebf3;
  --border-strong:#dfe3ef;

  /* — Texte — */
  --text:#1b1e2b;
  --text-soft:#4d5366;
  --muted:#888fa6;
  --muted-2:#a8aec2;

  /* — Couleur principale (indigo) — */
  --primary:#5b62f4;
  --primary-600:#4b51e6;
  --primary-100:#e7e8fe;
  --primary-50:#f1f2fe;

  /* — Couleur secondaire (cyan/teal) — */
  --secondary:#10b3c6;
  --secondary-100:#d6f4f8;

  /* — Accents d'état — */
  --success:#16b97f; --success-50:#e3f8f0;
  --warn:#f5a524;    --warn-50:#fef4e2;
  --danger:#f24d6a;  --danger-50:#fee6ea;
  --gold:#f0b429;

  /* — Pastels par matière — */
  --phys:#6d6af6;  --phys-bg:#eeeefe;
  --math:#10a5b8;  --math-bg:#e1f5f8;

  /* — Rayons — */
  --r-xs:9px; --r-sm:12px; --r:16px; --r-lg:22px; --r-xl:30px;

  /* — Ombres douces & réalistes — */
  --sh-xs:0 1px 2px rgba(24,28,48,.05);
  --sh-sm:0 2px 8px rgba(24,28,48,.06), 0 1px 2px rgba(24,28,48,.04);
  --sh-md:0 10px 28px -10px rgba(24,28,48,.16), 0 2px 6px rgba(24,28,48,.05);
  --sh-lg:0 26px 60px -22px rgba(24,28,48,.28), 0 6px 16px rgba(24,28,48,.08);

  --ease:cubic-bezier(.22,.7,.25,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  color:var(--text);background:var(--bg);
  background-image:
    radial-gradient(820px 460px at 8% -6%,rgba(109,106,246,.07),transparent 60%),
    radial-gradient(760px 460px at 102% 4%,rgba(16,179,198,.06),transparent 58%);
  background-attachment:fixed;
  display:flex;min-height:100vh;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{line-height:1.25;letter-spacing:-.015em;color:var(--text)}
a{color:var(--primary);text-decoration:none}
::selection{background:var(--primary-100)}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:99px;border:3px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:var(--border-strong)}

/* ============================ SIDEBAR ============================ */
.sidebar{
  width:282px;flex-shrink:0;height:100vh;position:sticky;top:0;
  background:rgba(255,255,255,.78);backdrop-filter:blur(20px);
  border-right:1px solid var(--border);display:flex;flex-direction:column;
}
.brand{display:flex;gap:12px;align-items:center;padding:22px 22px 20px}
.brand-logo{font-size:23px;width:44px;height:44px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--primary),#8a7bff);border-radius:14px;box-shadow:var(--sh-md)}
.brand h1{font-size:16px;font-weight:800;letter-spacing:-.02em}
.brand p{font-size:11px;color:var(--muted);font-weight:500}

#nav{flex:1;overflow-y:auto;padding:6px 12px 12px}
.nav-group-title{font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--muted-2);
  font-weight:700;padding:18px 12px 8px}
.nav-item{
  display:flex;align-items:center;gap:11px;width:100%;text-align:left;border:0;cursor:pointer;
  background:transparent;color:var(--text-soft);padding:9px 12px;border-radius:12px;font-size:13.5px;
  font-family:inherit;font-weight:500;transition:.18s var(--ease);margin-bottom:1px;
}
.nav-item:hover{background:var(--surface-2);color:var(--text)}
.nav-item.active{background:var(--primary);color:#fff;font-weight:600;box-shadow:var(--sh-md)}
.nav-emoji{font-size:15px;width:20px;text-align:center}
.nav-check{margin-left:auto;font-size:12px;color:var(--muted-2);opacity:0}
.nav-check.done{opacity:1;color:var(--success)}
.nav-item.active .nav-check.done{color:#fff}
.nav-badge{margin-left:auto;font-size:11px;font-weight:700;background:var(--surface-3);color:var(--muted);
  padding:1px 9px;border-radius:99px}
.nav-item.active .nav-badge{background:rgba(255,255,255,.25);color:#fff}
.nav-feature{color:var(--text);font-weight:600}

.sidebar-foot{padding:16px 18px;border-top:1px solid var(--border)}
.progress-label{font-size:12px;color:var(--muted);display:flex;justify-content:space-between;margin-bottom:8px;font-weight:600}
.progress-label span{color:var(--primary)}
.progress-bar{height:8px;background:var(--surface-3);border-radius:99px;overflow:hidden}
#progFill{height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--secondary));transition:.5s var(--ease)}

/* ============================ CONTENU ============================ */
.content{flex:1;padding:42px 52px 100px;max-width:1040px;margin:0 auto;width:100%}
.chapter{display:none;animation:rise .45s var(--ease)}
.chapter.active{display:block}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes pop{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}

.chapter > h2{font-size:30px;font-weight:800;margin-bottom:7px;letter-spacing:-.025em}
.chapter-sub{color:var(--text-soft);margin-bottom:28px;font-size:15px;max-width:760px}

/* — Badges — */
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--primary-50);color:var(--primary-600);
  padding:5px 13px;border-radius:99px;font-size:11.5px;font-weight:700;margin-bottom:16px;letter-spacing:.01em}
.badge.mini{margin:0;background:var(--surface-2);color:var(--text-soft)}
.badge.phys{background:var(--phys-bg);color:var(--phys)}
.badge.math{background:var(--math-bg);color:var(--math)}

/* — Hero / accueil — */
.hero h2{font-size:40px;font-weight:800;margin-bottom:14px;max-width:720px;letter-spacing:-.03em}
.hero p{color:var(--text-soft);max-width:680px;margin-bottom:30px;font-size:16px}
.hero-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(208px,1fr));gap:15px}
.hero-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:20px;cursor:pointer;transition:.22s var(--ease);box-shadow:var(--sh-xs)}
.hero-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--border-strong)}
.hero-card .hc-emoji{font-size:27px}
.hero-card h4{margin:13px 0 4px;font-size:15px;font-weight:700}
.hero-card p{font-size:12.5px;color:var(--muted);margin:0}

.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:30px 0 8px}
.feature-card{display:flex;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:22px 24px;cursor:pointer;transition:.22s var(--ease);box-shadow:var(--sh-xs)}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.feature-ico{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:24px;flex-shrink:0}
.feature-ico.q{background:var(--primary-50);color:var(--primary)}
.feature-ico.f{background:var(--secondary-100);color:var(--secondary)}
.feature-card h3{font-size:17px;margin-bottom:3px}
.feature-card p{font-size:13px;color:var(--muted)}

.tips{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px 26px;margin-top:30px;box-shadow:var(--sh-xs)}
.tips h3{margin-bottom:14px;font-size:18px}
.tips ul{padding-left:20px}
.tips li{margin-bottom:8px;color:var(--text-soft)}
.tips strong{color:var(--text);font-weight:600}

/* — Cartes de cours — */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:24px 28px;margin-bottom:18px;box-shadow:var(--sh-xs)}
.card h3{font-size:18px;margin-bottom:13px;display:flex;align-items:center;gap:9px}
.card h4{font-size:12.5px;margin:18px 0 8px;color:var(--primary-600);text-transform:uppercase;letter-spacing:.05em;font-weight:700}
.card p{margin-bottom:10px;color:var(--text-soft)}
.card ul,.card ol{padding-left:22px;margin-bottom:10px}
.card li{margin-bottom:7px;color:var(--text-soft)}
.card li strong,.card p strong{color:var(--text);font-weight:600}

.def{border-left:3px solid var(--primary);background:var(--primary-50);
  padding:13px 17px;border-radius:0 12px 12px 0;margin:14px 0;color:var(--text-soft)}
.def b{color:var(--primary-600)}
.formula{font-family:'JetBrains Mono',monospace;background:var(--surface-2);border:1px solid var(--border);
  border-radius:14px;padding:16px 20px;margin:14px 0;font-size:16px;text-align:center;color:var(--text);overflow-x:auto}
.formula .unit{color:var(--muted);font-size:13px;display:block;margin-top:7px}
.note{background:var(--warn-50);border-left:3px solid var(--warn);padding:13px 17px;border-radius:0 12px 12px 0;margin:14px 0;font-size:14px;color:var(--text-soft)}
.note b{color:#b9791b}
.example{background:var(--success-50);border:1px solid #c4ecdc;border-radius:14px;padding:17px 19px;margin:16px 0;color:var(--text-soft)}
.example .ex-title{color:var(--success);font-weight:700;margin-bottom:8px;font-size:13.5px}

table{width:100%;border-collapse:separate;border-spacing:0;margin:14px 0;font-size:14px;border:1px solid var(--border);border-radius:12px;overflow:hidden}
th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border)}
tr:last-child td{border-bottom:0}
th{background:var(--surface-2);font-weight:700;color:var(--text)}
td{color:var(--text-soft)}
td .unit{color:var(--muted)}

/* — Quiz intégré au chapitre — */
.quiz{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px 28px;margin-top:26px;box-shadow:var(--sh-xs)}
.quiz h3{margin-bottom:4px}
.quiz-sub{color:var(--muted);font-size:13px;margin-bottom:18px}
.q{margin-bottom:20px}
.q-text{font-weight:600;margin-bottom:11px}
.q-opt{display:block;width:100%;text-align:left;background:var(--surface);border:1.5px solid var(--border-strong);
  color:var(--text);padding:12px 15px;border-radius:12px;margin-bottom:9px;cursor:pointer;font-family:inherit;font-size:14px;transition:.16s var(--ease)}
.q-opt:hover{border-color:var(--primary);background:var(--primary-50)}
.q-opt.correct{background:var(--success-50);border-color:var(--success);color:#0c7a52;font-weight:600}
.q-opt.wrong{background:var(--danger-50);border-color:var(--danger);color:#c12c46}
.q-feedback{font-size:13px;margin-top:7px;color:var(--text-soft);display:none}
.q-feedback.show{display:block}
.q-feedback.ok{color:var(--success)}
.q-feedback.no{color:var(--danger)}

/* ============================ BOUTONS ============================ */
.btn{border:0;cursor:pointer;font-family:inherit;font-size:14px;font-weight:600;padding:11px 20px;border-radius:13px;
  transition:.18s var(--ease);display:inline-flex;align-items:center;gap:8px;justify-content:center}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--primary-600);box-shadow:var(--sh-md);transform:translateY(-1px)}
.btn-soft{background:var(--primary-50);color:var(--primary-600)}
.btn-soft:hover{background:var(--primary-100)}
.btn-ghost{background:var(--surface);color:var(--text-soft);border:1px solid var(--border-strong)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-success{background:var(--success);color:#fff;box-shadow:var(--sh-sm)}
.btn-success:hover{filter:brightness(1.04);transform:translateY(-1px)}
.btn-danger-soft{background:var(--danger-50);color:var(--danger)}
.btn-danger-soft:hover{background:#fcd5dc}
.btn-sm{padding:7px 13px;font-size:12.5px;border-radius:10px}
.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}
.btn-block{width:100%}

.chapter-foot{display:flex;justify-content:space-between;gap:12px;margin-top:30px;flex-wrap:wrap}
.btn-done{background:var(--success);color:#fff;box-shadow:var(--sh-sm)}
.btn-done.is-done{background:var(--success-50);color:var(--success);box-shadow:none}
.btn-next{background:var(--primary);color:#fff;margin-left:auto;box-shadow:var(--sh-sm)}
.btn-next:hover{background:var(--primary-600);transform:translateY(-1px)}

/* — Formulaires — */
.input,.select,textarea.input{width:100%;background:var(--surface);border:1.5px solid var(--border-strong);border-radius:12px;
  padding:11px 14px;font-family:inherit;font-size:14px;color:var(--text);transition:.16s var(--ease)}
.input:focus,.select:focus,textarea.input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-50)}
.input::placeholder{color:var(--muted-2)}
.field-label{display:block;font-size:12px;font-weight:700;color:var(--text-soft);margin:0 0 6px 2px;text-transform:uppercase;letter-spacing:.04em}

/* — Chips & segments (réutilisés Quiz/Flashcards) — */
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{background:var(--surface);border:1.5px solid var(--border-strong);color:var(--text-soft);font-family:inherit;
  font-size:13px;font-weight:500;padding:7px 14px;border-radius:99px;cursor:pointer;transition:.16s var(--ease)}
.chip:hover{border-color:var(--primary);color:var(--primary)}
.chip.on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600;box-shadow:var(--sh-sm)}
.chip-all{background:transparent;border:0;color:var(--primary);font-size:11.5px;font-family:inherit;font-weight:600;cursor:pointer;padding:2px 4px}
.chip-all:hover{text-decoration:underline}
.chip-group-name{font-size:11.5px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin:16px 0 9px;display:flex;align-items:center;gap:10px}

.seg{display:flex;gap:10px;flex-wrap:wrap}
.seg-btn{flex:1;min-width:104px;background:var(--surface);border:1.5px solid var(--border-strong);color:var(--text-soft);
  font-family:inherit;font-size:14px;font-weight:600;padding:13px 14px;border-radius:14px;cursor:pointer;
  transition:.16s var(--ease);display:flex;flex-direction:column;gap:3px;align-items:center}
.seg-btn small{font-size:11px;font-weight:500;color:var(--muted)}
.seg-btn:hover{border-color:var(--primary);color:var(--primary)}
.seg-btn.on{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--sh-sm)}
.seg-btn.on small{color:rgba(255,255,255,.85)}

/* ============================ MODULE QUIZ ============================ */
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.025em}
.section-head p{color:var(--text-soft);font-size:14.5px;margin-top:4px}
.head-tabs{display:flex;gap:7px;background:var(--surface-2);padding:5px;border-radius:14px;border:1px solid var(--border)}
.tab{background:transparent;border:0;font-family:inherit;font-size:13px;font-weight:600;color:var(--text-soft);padding:8px 16px;border-radius:10px;cursor:pointer;transition:.16s var(--ease)}
.tab:hover{color:var(--text)}
.tab.on{background:var(--surface);color:var(--primary);box-shadow:var(--sh-xs)}

.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px 26px;margin-bottom:18px;box-shadow:var(--sh-xs)}
.panel h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.panel .step-num{width:24px;height:24px;border-radius:8px;background:var(--primary-50);color:var(--primary);display:grid;place-items:center;font-size:13px;font-weight:800}

.best-banner{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.stat-pill{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px 18px;box-shadow:var(--sh-xs)}
.stat-pill .v{font-size:22px;font-weight:800;letter-spacing:-.02em}
.stat-pill .l{font-size:11.5px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em}
.stat-pill.good .v{color:var(--success)} .stat-pill.warn .v{color:var(--warn)} .stat-pill.prim .v{color:var(--primary)}

.setup-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:8px;flex-wrap:wrap}
.avail{color:var(--muted);font-size:14px;font-weight:500}
.setup-foot .btn{padding:14px 30px;font-size:15px}

/* — Déroulé du quiz — */
.run-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}
.run-meta{display:flex;gap:14px;align-items:center;font-size:13px;font-weight:700}
.run-count{color:var(--muted)}
.run-score{color:var(--primary)}
.run-timer{color:var(--text);background:var(--surface-2);border:1px solid var(--border);padding:5px 12px;border-radius:99px}
.run-timer.low{color:var(--danger);background:var(--danger-50);border-color:#f6c6cf}
.run-progress{height:8px;background:var(--surface-3);border-radius:99px;overflow:hidden;margin-bottom:14px}
.run-progress>div{height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));transition:.4s var(--ease);border-radius:99px}
.dots{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:22px}
.dot{width:26px;height:26px;border-radius:9px;border:1.5px solid var(--border-strong);background:var(--surface);
  font-size:11px;font-weight:700;color:var(--muted);cursor:pointer;transition:.15s var(--ease)}
.dot:hover{border-color:var(--primary)}
.dot.answered{background:var(--primary-50);border-color:var(--primary-100);color:var(--primary)}
.dot.current{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--sh-sm)}
.dot.flag{box-shadow:inset 0 0 0 2px var(--warn)}

.run-card{padding:30px 32px;animation:pop .3s var(--ease)}
.qtype-tag{display:inline-block;font-size:10.5px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;
  padding:3px 9px;border-radius:7px;background:var(--surface-2);color:var(--muted);margin-left:8px;vertical-align:middle}
.diff-dots{display:inline-flex;gap:3px;margin-left:8px;vertical-align:middle}
.diff-dots i{width:6px;height:6px;border-radius:50%;background:var(--border-strong)}
.diff-dots i.on1{background:var(--success)} .diff-dots i.on2{background:var(--warn)} .diff-dots i.on3{background:var(--danger)}
.run-q{font-size:20px;font-weight:700;margin:8px 0 22px;line-height:1.45}
.run-opts{display:grid;gap:11px}
.opt{display:flex;align-items:center;gap:13px;text-align:left;background:var(--surface);border:1.5px solid var(--border-strong);
  color:var(--text);padding:15px 17px;border-radius:14px;cursor:pointer;font-family:inherit;font-size:15px;transition:.16s var(--ease);width:100%}
.opt:hover:not(.locked){border-color:var(--primary);background:var(--primary-50);transform:translateX(3px)}
.opt .mark{width:24px;height:24px;border-radius:7px;border:1.5px solid var(--border-strong);flex-shrink:0;display:grid;place-items:center;font-size:12px;font-weight:800;color:transparent}
.opt.multi .mark{border-radius:7px}
.opt.sel{border-color:var(--primary);background:var(--primary-50)}
.opt.sel .mark{background:var(--primary);border-color:var(--primary);color:#fff}
.opt.correct{background:var(--success-50);border-color:var(--success)}
.opt.correct .mark{background:var(--success);border-color:var(--success);color:#fff}
.opt.wrong{background:var(--danger-50);border-color:var(--danger)}
.opt.wrong .mark{background:var(--danger);border-color:var(--danger);color:#fff}
.opt.locked{cursor:default}

.short-wrap{display:flex;gap:10px;flex-wrap:wrap}
.short-wrap .input{flex:1;min-width:220px;font-size:16px}
.order-list{display:grid;gap:10px}
.order-item{display:flex;align-items:center;gap:12px;background:var(--surface);border:1.5px solid var(--border-strong);
  border-radius:13px;padding:13px 15px;font-size:15px}
.order-item .ord-handles{margin-left:auto;display:flex;gap:5px}
.order-item .ord-handles button{width:30px;height:30px;border-radius:9px;border:1px solid var(--border-strong);background:var(--surface-2);cursor:pointer;font-size:14px;color:var(--text-soft)}
.order-item .ord-handles button:hover{border-color:var(--primary);color:var(--primary)}
.order-item.ok{background:var(--success-50);border-color:var(--success)}
.order-item.ko{background:var(--danger-50);border-color:var(--danger)}
.order-num{width:24px;height:24px;border-radius:7px;background:var(--primary-50);color:var(--primary);display:grid;place-items:center;font-size:12px;font-weight:800}

.match-grid{display:grid;gap:11px}
.match-row{display:grid;grid-template-columns:1fr 1.2fr;gap:12px;align-items:center}
.match-left{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:13px 15px;font-weight:600;font-size:14.5px}
.match-row.ok .match-left{background:var(--success-50);border-color:var(--success)}
.match-row.ko .match-left{background:var(--danger-50);border-color:var(--danger)}

.run-fb{display:none;margin-top:18px;padding:15px 18px;border-radius:14px;font-size:14px;line-height:1.55;animation:pop .25s var(--ease)}
.run-fb.show{display:block}
.run-fb.ok{background:var(--success-50);color:#0c7a52}
.run-fb.no{background:var(--danger-50);color:#bb2b44}
.run-fb b{font-weight:700}
.run-foot{margin-top:24px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.run-foot .right{display:flex;gap:10px;margin-left:auto}

/* — Résultats — */
.result-hero{display:flex;align-items:center;gap:30px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:30px 32px;margin-bottom:20px;flex-wrap:wrap;box-shadow:var(--sh-sm)}
.ring{--p:0;width:132px;height:132px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;position:relative;
  background:conic-gradient(var(--primary) calc(var(--p)*1%),var(--surface-3) 0)}
.ring::before{content:"";position:absolute;inset:11px;border-radius:50%;background:var(--surface)}
.ring .num{position:relative;font-size:32px;font-weight:800;color:var(--primary);letter-spacing:-.02em}
.result-hero .rh-score{font-size:23px;font-weight:800;margin-bottom:5px}
.result-hero p{color:var(--text-soft);font-size:15px}
.result-tag{display:inline-block;margin-top:8px;background:var(--gold);color:#5c4204;font-size:12px;font-weight:700;padding:4px 12px;border-radius:99px}
.weak-list{display:grid;gap:9px;margin-top:6px}
.weak{display:flex;align-items:center;gap:12px}
.weak .wbar{flex:1;height:8px;background:var(--surface-3);border-radius:99px;overflow:hidden}
.weak .wbar>div{height:100%;border-radius:99px}
.weak .wlbl{font-size:13px;font-weight:600;min-width:160px}
.weak .wpct{font-size:13px;font-weight:700;color:var(--muted);min-width:42px;text-align:right}
.result-actions{display:flex;gap:11px;flex-wrap:wrap;margin:20px 0 30px}

.rev-title{font-size:17px;margin:6px 0 14px}
.rev-list{display:grid;gap:11px}
.rev{border:1px solid var(--border);border-left:3px solid var(--border-strong);border-radius:0 13px 13px 0;padding:14px 18px;background:var(--surface);box-shadow:var(--sh-xs)}
.rev.ok{border-left-color:var(--success)}
.rev.no{border-left-color:var(--danger)}
.rev-q{font-weight:600;margin-bottom:6px}
.rev-a{font-size:13.5px;margin-bottom:5px;color:var(--text-soft)}
.rev-a b{color:var(--text)}
.rev-fb{font-size:13px;color:var(--muted)}

/* — Historique / stats — */
.hist-row{display:flex;align-items:center;gap:14px;padding:14px 18px;border:1px solid var(--border);border-radius:14px;background:var(--surface);margin-bottom:9px;box-shadow:var(--sh-xs)}
.hist-pct{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:15px;flex-shrink:0}
.hist-meta{flex:1}
.hist-meta .h1{font-weight:600;font-size:14px}
.hist-meta .h2{font-size:12px;color:var(--muted)}
.mastery-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.mastery-row .m-lbl{min-width:200px;font-size:13.5px;font-weight:600}
.mastery-row .m-bar{flex:1;height:9px;background:var(--surface-3);border-radius:99px;overflow:hidden}
.mastery-row .m-bar>div{height:100%;border-radius:99px;transition:.5s var(--ease)}
.mastery-row .m-val{font-size:13px;font-weight:700;min-width:46px;text-align:right;color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:40px 20px}
.empty .e-emoji{font-size:38px;display:block;margin-bottom:10px}

/* ============================ FLASHCARDS ============================ */
.fc-toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.fc-toolbar .input{flex:1;min-width:200px}
.fc-counter{font-size:13px;color:var(--muted);font-weight:600}

.fc-stage{display:flex;flex-direction:column;align-items:center;gap:18px;margin:10px 0 4px}
.flashcard{width:100%;max-width:560px;height:330px;perspective:1600px;cursor:pointer}
.flip-inner{position:relative;width:100%;height:100%;transition:transform .6s var(--ease);transform-style:preserve-3d}
.flashcard.flipped .flip-inner{transform:rotateY(180deg)}
.flip-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:var(--r-lg);background:var(--surface);
  border:1px solid var(--border);box-shadow:var(--sh-md);display:flex;flex-direction:column;justify-content:center;
  align-items:center;text-align:center;padding:34px 38px}
.flip-face .fc-tag{position:absolute;top:18px;left:18px}
.flip-face .fc-fav{position:absolute;top:14px;right:16px;font-size:20px;background:none;border:0;cursor:pointer;opacity:.5;transition:.15s}
.flip-face .fc-fav.on{opacity:1}
.flip-face .fc-hint{position:absolute;bottom:18px;font-size:12px;color:var(--muted-2)}
.flip-front .fc-q{font-size:22px;font-weight:700;line-height:1.4}
.flip-back{transform:rotateY(180deg);background:linear-gradient(160deg,#fbfcff,#f3f4fe)}
.flip-back .fc-a{font-size:19px;font-weight:600;line-height:1.5;color:var(--text)}
.flip-back .fc-side{position:absolute;top:18px;left:18px;font-size:11px;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.06em}

.fc-nav{display:flex;align-items:center;gap:10px;justify-content:center;flex-wrap:wrap}
.fc-nav .pos{font-size:13px;color:var(--muted);font-weight:600;min-width:70px;text-align:center}
.icon-btn{width:44px;height:44px;border-radius:13px;border:1px solid var(--border-strong);background:var(--surface);
  cursor:pointer;font-size:18px;color:var(--text-soft);transition:.16s var(--ease);box-shadow:var(--sh-xs);display:grid;place-items:center}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.fc-judge{display:flex;gap:12px;justify-content:center;margin-top:2px;flex-wrap:wrap}

.fc-mastery{display:flex;gap:7px;margin:0 0 4px}
.lvl-dot{width:9px;height:9px;border-radius:50%;background:var(--surface-3)}
.lvl-dot.on{background:var(--success)}

/* — Gestion des cartes — */
.fc-manage-list{display:grid;gap:10px}
.fc-item{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:13px 16px;box-shadow:var(--sh-xs)}
.fc-item .fi-main{flex:1;min-width:0}
.fc-item .fi-front{font-weight:600;font-size:14px}
.fc-item .fi-back{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fc-item .fi-acts{display:flex;gap:6px}
.fc-form{display:grid;gap:12px}

/* — Tooltip — */
[data-tip]{position:relative}
[data-tip]:hover::after{content:attr(data-tip);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);
  background:var(--text);color:#fff;font-size:11.5px;font-weight:600;padding:6px 10px;border-radius:8px;white-space:nowrap;
  box-shadow:var(--sh-md);z-index:30;animation:pop .15s var(--ease)}

/* — Pop-up / modale — */
.modal-back{position:fixed;inset:0;background:rgba(24,28,48,.42);backdrop-filter:blur(4px);z-index:60;
  display:flex;align-items:center;justify-content:center;padding:20px;animation:pop .2s var(--ease)}
.modal{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-lg);width:100%;max-width:520px;
  padding:26px 28px;animation:rise .25s var(--ease);max-height:90vh;overflow-y:auto}
.modal h3{font-size:18px;margin-bottom:6px}
.modal .m-sub{color:var(--muted);font-size:13px;margin-bottom:18px}
.modal-foot{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}

/* — Toast / notification — */
.toast-wrap{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:80;display:flex;flex-direction:column;gap:10px;align-items:center}
.toast{background:var(--text);color:#fff;font-size:13.5px;font-weight:600;padding:12px 20px;border-radius:14px;box-shadow:var(--sh-lg);
  display:flex;align-items:center;gap:10px;animation:rise .25s var(--ease)}
.toast.ok{background:var(--success)} .toast.no{background:var(--danger)} .toast.info{background:var(--primary)}

/* ============================ MOBILE ============================ */
.menu-toggle{display:none;position:fixed;top:14px;left:14px;z-index:50;background:rgba(255,255,255,.9);
  backdrop-filter:blur(8px);border:1px solid var(--border-strong);color:var(--text);font-size:19px;
  width:46px;height:46px;border-radius:13px;cursor:pointer;box-shadow:var(--sh-sm)}

@media(max-width:920px){
  body{flex-direction:column}
  .menu-toggle{display:block}
  .sidebar{position:fixed;left:0;top:0;z-index:40;transform:translateX(-100%);transition:.28s var(--ease);width:276px;background:#fff}
  .sidebar.open{transform:none;box-shadow:var(--sh-lg)}
  .content{padding:74px 18px 70px}
  .hero h2{font-size:29px}
  .chapter > h2,.section-head h2{font-size:24px}
  .card,.panel{padding:20px 18px}
  .feature-row{grid-template-columns:1fr}
  .result-hero{justify-content:center;text-align:center}
  .match-row{grid-template-columns:1fr}
  .flashcard{height:300px}
  .mastery-row .m-lbl,.weak .wlbl{min-width:120px}
}