/* ============================================================
   exo-shell.css — CSS commun à tous les fichiers exercices
   BTS MCO — LMS
   Extrait de Ch01_exo.html
   ============================================================ */


/* ===== THEMES ===== */
:root { --tr:0.35s cubic-bezier(.4,0,.2,1); }

[data-theme="naturel"] {
  --bg:#f0f4f0; --bg2:#e4ede4; --card:#fff; --card2:#f7faf7;
  --text:#1a2e1a; --text2:#4a6050; --accent:#2d6a4f; --accent2:#40916c; --accent3:#74c69d;
  --border:#b7d5c4; --shadow:rgba(45,106,79,.12);
  --correct:#2d6a4f; --wrong:#c0392b; --neutral:#8d9e94;
}
[data-theme="sombre"] {
  --bg:#0d0d1a; --bg2:#13132b; --card:#1a1a35; --card2:#202040;
  --text:#e8e0ff; --text2:#9b8fc7; --accent:#818CF8; --accent2:#a855f7; --accent3:#c084fc;
  --border:#3d2d6a; --shadow:rgba(129,140,248,.25);
  --correct:#10b981; --wrong:#ef4444; --neutral:#6b7280;
}
[data-theme="chaleureux"] {
  --bg:#fdf4ec; --bg2:#fae8d5; --card:#fff; --card2:#fff8f2;
  --text:#2d1b0e; --text2:#7a4928; --accent:#e07b39; --accent2:#f59e47; --accent3:#fcd270;
  --border:#f0c89a; --shadow:rgba(224,123,57,.15);
  --correct:#16a34a; --wrong:#dc2626; --neutral:#9ca3af;
}
[data-theme="academique"] {
  --bg:#F0F2F8; --bg2:#E8EBF2; --card:#fff; --card2:#f5f7fc;
  --text:#1A1D2E; --text2:#4A4E6A; --accent:#2E4A7A; --accent2:#B8860B; --accent3:#8fafd4;
  --border:#D5D9E8; --shadow:rgba(46,74,122,.12);
  --correct:#2E4A7A; --wrong:#c0392b; --neutral:#8d9e94;
}

*{margin:0;padding:0;box-sizing:border-box;}
/* Titres de carte : anciens <h4>, devenus <p class="ttl"> (voir cejm-shell.css). */
.ttl{font-weight:700;}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--text);transition:background var(--tr),color var(--tr);min-height:100vh;}

/* ===== HEADER ===== */
header{background:var(--card);border-bottom:2px solid var(--border);padding:16px 32px;position:sticky;top:0;z-index:100;box-shadow:0 2px 20px var(--shadow);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;transition:background var(--tr);}
.header-left h1{font-family:'Playfair Display',serif;font-size:clamp(.95rem,2vw,1.3rem);font-weight:700;color:var(--text);line-height:1.2;}
.header-left p:not(.ttl){font-size:.75rem;color:var(--text2);font-family:'IBM Plex Mono',monospace;margin-top:2px;}
.header-right{display:flex;align-items:center;gap:16px;}
.score-box{display:flex;gap:10px;align-items:center;font-family:'IBM Plex Mono',monospace;font-size:.85rem;}
.score-item{display:flex;align-items:center;gap:4px;position:relative;cursor:default;}
.score-item::after{
  content:attr(data-tip);
  position:absolute;
  bottom:calc(100% + 8px);
  left:50%;
  transform:translateX(-50%) scale(.85);
  background:#1a1a2e;color:#fff;
  font-family:'DM Sans',sans-serif;font-size:.72rem;font-weight:600;
  white-space:nowrap;padding:5px 10px;border-radius:7px;
  pointer-events:none;opacity:0;
  transition:opacity .18s,transform .18s;
  box-shadow:0 4px 14px rgba(0,0,0,.3);
  z-index:200;
}
.score-item::before{
  content:'';position:absolute;bottom:calc(100% + 2px);left:50%;
  transform:translateX(-50%);
  border:5px solid transparent;border-top-color:#1a1a2e;
  pointer-events:none;opacity:0;transition:opacity .18s;z-index:200;
}
.score-item:hover::after,.score-item:hover::before{opacity:1;transform:translateX(-50%) scale(1);}
.dot{width:10px;height:10px;border-radius:50%;}
.dot-correct{background:var(--correct);} .dot-wrong{background:var(--wrong);} .dot-neutral{background:var(--neutral);}
.theme-dots{display:flex;gap:8px;align-items:center;}
.theme-dot{width:22px;height:22px;border-radius:50%;cursor:pointer;border:3px solid transparent;transition:transform .2s,border-color .2s;position:relative;}
.theme-dot:hover{transform:scale(1.2);}
.theme-dot.active{border-color:var(--text);transform:scale(1.15);}
.theme-dot::after{
  content:attr(data-tip);
  position:absolute;bottom:calc(100% + 8px);left:50%;
  transform:translateX(-50%) scale(.85);
  background:#1a1a2e;color:#fff;
  font-family:'DM Sans',sans-serif;font-size:.72rem;font-weight:600;
  white-space:nowrap;padding:5px 10px;border-radius:7px;
  pointer-events:none;opacity:0;
  transition:opacity .18s,transform .18s;
  letter-spacing:.3px;box-shadow:0 4px 14px rgba(0,0,0,.3);
}
.theme-dot::before{
  content:'';position:absolute;bottom:calc(100% + 2px);left:50%;
  transform:translateX(-50%);
  border:5px solid transparent;border-top-color:#1a1a2e;
  pointer-events:none;opacity:0;transition:opacity .18s;
}
.theme-dot:hover::after,.theme-dot:hover::before{opacity:1;transform:translateX(-50%) scale(1);}
.td1{background:linear-gradient(135deg,#2E4A7A,#8fafd4);} .td2{background:linear-gradient(135deg,#e07b39,#fcd270);} .td3{background:linear-gradient(135deg,#2d6a4f,#74c69d);} .td4{background:linear-gradient(135deg,#818CF8,#0C0F1A);}
.btn-restart{background:var(--accent);color:#fff;border:none;padding:8px 16px;border-radius:8px;cursor:pointer;font-size:.82rem;font-family:'DM Sans',sans-serif;font-weight:600;transition:opacity .2s,transform .15s;}
.btn-restart:hover{opacity:.85;transform:translateY(-1px);}

/* ===== PROGRESS BAR ===== */
.progress-wrapper{background:var(--bg2);padding:10px 32px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--border);transition:background var(--tr);}
.progress-bar-outer{flex:1;height:8px;background:var(--border);border-radius:100px;overflow:hidden;}
.progress-bar-inner{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent3));border-radius:100px;transition:width .5s ease;width:0%;}
.progress-pct{font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--text2);min-width:38px;text-align:right;}

/* ===== MAIN ===== */
.main{max-width:980px;margin:0 auto;padding:28px 20px 80px;}

/* ===== COURS VIEWER ===== */
.cours-section{background:var(--card);border-radius:16px;border:1px solid var(--border);overflow:hidden;margin-bottom:36px;box-shadow:0 4px 28px var(--shadow);transition:background var(--tr);}
.cours-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--bg2);border-bottom:1px solid var(--border);flex-wrap:wrap;gap:10px;transition:background var(--tr);}
.cours-title{font-family:'Playfair Display',serif;font-size:1rem;font-weight:700;color:var(--accent);display:flex;align-items:center;gap:8px;}
.cours-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.cours-btn{background:var(--card);border:1px solid var(--border);color:var(--text);padding:7px 14px;border-radius:8px;cursor:pointer;font-size:.8rem;font-family:'DM Sans',sans-serif;font-weight:600;transition:background .2s,color .2s,transform .15s;}
.cours-btn:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
.cours-btn:disabled{opacity:.35;cursor:not-allowed;}
.cours-btn:disabled:hover{background:var(--card);color:var(--text);transform:none;}
.cours-page-indicator{font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--text2);padding:7px 12px;background:var(--card);border:1px solid var(--border);border-radius:8px;min-width:80px;text-align:center;}

.cours-canvas-wrapper{
  background:#18181b;width:100%;height:clamp(260px,45vw,560px);
  display:flex;align-items:center;justify-content:center;
  perspective:1800px;overflow:hidden;position:relative;cursor:default;
}
.cours-section:fullscreen,.cours-section:-webkit-full-screen{background:#18181b;border-radius:0;display:flex;flex-direction:column;}
.cours-section:fullscreen .cours-canvas-wrapper,.cours-section:-webkit-full-screen .cours-canvas-wrapper{flex:1;height:auto;}
.cours-section:fullscreen .cours-slide-container,.cours-section:-webkit-full-screen .cours-slide-container{width:92%;max-width:1100px;height:84%;}

#fsBtn{
  position:absolute;bottom:10px;right:12px;z-index:20;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);
  color:rgba(255,255,255,.5);border-radius:7px;padding:4px 9px;
  font-size:.72rem;cursor:pointer;transition:all .2s;
  font-family:'IBM Plex Mono',monospace;letter-spacing:.5px;
}
#fsBtn:hover{background:rgba(255,255,255,.18);color:#fff;}
.fs-hint{
  position:absolute;bottom:44px;left:50%;transform:translateX(-50%);
  background:rgba(0,0,0,.7);color:rgba(255,255,255,.75);
  font-size:.72rem;padding:5px 14px;border-radius:20px;
  pointer-events:none;opacity:0;transition:opacity .4s;white-space:nowrap;
  font-family:'DM Sans',sans-serif;
}
.fs-hint.show{opacity:1;}
.cours-click-zone{
  position:absolute;top:0;bottom:0;width:22%;z-index:10;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .2s;
}
.cours-click-zone.left{left:0;}
.cours-click-zone.right{right:0;}
.cours-click-zone:hover{background:rgba(255,255,255,.06);}
.cours-click-zone.disabled{cursor:default;pointer-events:none;}
.cours-click-arrow{font-size:1.8rem;color:rgba(255,255,255,.18);transition:color .2s,transform .2s;user-select:none;font-weight:300;}
.cours-click-zone:hover .cours-click-arrow{color:rgba(255,255,255,.55);transform:scale(1.15);}
.cours-slide-container{width:90%;max-width:820px;height:clamp(220px,40vw,510px);position:relative;overflow:hidden;}

@keyframes slideInRight { from{transform:translateX(100%);} to{transform:translateX(0);} }
@keyframes slideInLeft  { from{transform:translateX(-100%);} to{transform:translateX(0);} }
@keyframes slideOutLeft  { from{transform:translateX(0);} to{transform:translateX(-100%);} }
@keyframes slideOutRight { from{transform:translateX(0);} to{transform:translateX(100%);} }

.cours-slide{
  width:100%;height:100%;background:var(--card);border-radius:6px;
  box-shadow:0 10px 60px rgba(0,0,0,.55);overflow-y:auto;
  display:none;flex-direction:column;padding:0;
  position:absolute;top:0;left:0;
  scrollbar-width:thin;scrollbar-color:var(--border) transparent;
}
.cours-slide.active{display:flex;}
.cours-slide.slide-enter-right{ display:flex; animation:slideInRight .42s cubic-bezier(.4,0,.2,1) forwards; }
.cours-slide.slide-enter-left { display:flex; animation:slideInLeft  .42s cubic-bezier(.4,0,.2,1) forwards; }
.cours-slide.slide-exit-left  { display:flex; animation:slideOutLeft  .42s cubic-bezier(.4,0,.2,1) forwards; }
.cours-slide.slide-exit-right { display:flex; animation:slideOutRight .42s cubic-bezier(.4,0,.2,1) forwards; }
.cours-slide::-webkit-scrollbar{width:5px;}
.cours-slide::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}

/* Slide inner layout */
.slide-cover{background:linear-gradient(135deg,var(--accent) 0%,var(--accent2) 100%);padding:44px 52px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;height:100%;flex:1;}
.slide-cover-badge{display:inline-block;background:rgba(255,255,255,.18);color:#fff;font-size:.72rem;font-weight:700;padding:5px 14px;border-radius:20px;letter-spacing:1px;margin-bottom:20px;font-family:'IBM Plex Mono',monospace;}
.slide-cover h1{font-family:'Playfair Display',serif;font-size:clamp(1.5rem,3.5vw,2.4rem);color:#fff;font-weight:900;line-height:1.2;margin-bottom:14px;}
.slide-cover p:not(.ttl){color:rgba(255,255,255,.85);font-size:clamp(.82rem,1.5vw,1rem);line-height:1.7;max-width:560px;}
.slide-cover .slide-num{margin-top:auto;font-family:'IBM Plex Mono',monospace;font-size:.65rem;color:rgba(255,255,255,.45);padding-top:24px;}
.slide-body{padding:32px 44px;flex:1;}
.slide-body h2{font-family:'Playfair Display',serif;font-size:clamp(1.05rem,2.2vw,1.45rem);font-weight:700;color:var(--accent);margin-bottom:18px;padding-bottom:10px;border-bottom:2px solid var(--border);}
.slide-body h3{font-family:'DM Sans',sans-serif;font-size:clamp(.88rem,1.6vw,1.05rem);font-weight:700;color:var(--text);margin:16px 0 8px;}
.slide-body p:not(.ttl){font-size:clamp(.8rem,1.3vw,.92rem);line-height:1.7;color:var(--text2);margin-bottom:8px;}
.slide-body ul{margin-left:0;padding-left:0;list-style:none;}
.slide-body ul li{font-size:clamp(.78rem,1.3vw,.9rem);line-height:1.6;color:var(--text2);padding-left:22px;position:relative;margin-bottom:7px;}
.slide-body ul li::before{content:"›";position:absolute;left:4px;color:var(--accent);font-weight:700;font-size:1.1rem;}
.slide-body strong{color:var(--text);}
.slide-section-tag{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#fff;font-size:.68rem;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:14px;font-family:'IBM Plex Mono',monospace;letter-spacing:.5px;}

.s-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:14px 0;}
@media(max-width:600px){.s-grid{grid-template-columns:1fr;}}
.s-box{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:14px 16px;border-left:4px solid var(--accent);}
.s-box.accent2{border-left-color:var(--accent2);}
.s-box .ttl{font-family:'DM Sans',sans-serif;font-size:.82rem;font-weight:700;color:var(--accent);margin-bottom:8px;}
.s-box ul li{font-size:.78rem;}
.s-highlight{background:linear-gradient(135deg,rgba(45,106,79,.09),rgba(116,198,157,.05));border:1px solid var(--border);border-left:4px solid var(--accent2);border-radius:0 8px 8px 0;padding:12px 16px;margin:12px 0;font-size:.83rem;color:var(--text2);}
.s-highlight strong{color:var(--accent);}
.s-flow{display:flex;flex-direction:column;gap:8px;margin:12px 0;}
.s-flow-item{display:flex;align-items:center;gap:10px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:10px 14px;}
.s-flow-item .flow-dot{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:.72rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-family:'IBM Plex Mono',monospace;}
.s-flow-item p:not(.ttl){font-size:.82rem;margin:0;}
.s-two-tone{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--border);border-radius:10px;overflow:hidden;margin:12px 0;}
.s-tt-col{padding:14px 16px;}
.s-tt-col:first-child{background:linear-gradient(135deg,rgba(45,106,79,.06),rgba(116,198,157,.03));border-right:1px solid var(--border);}
.s-tt-col:last-child{background:linear-gradient(135deg,rgba(21,101,192,.05),rgba(100,181,246,.03));}
.s-tt-col .ttl{font-size:.8rem;font-weight:700;color:var(--accent);margin-bottom:8px;font-family:'DM Sans',sans-serif;}

/* Cours footer dots */
.cours-footer-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:var(--bg2);border-top:1px solid var(--border);font-size:.75rem;color:var(--text2);font-family:'IBM Plex Mono',monospace;transition:background var(--tr);}
.cours-progress-dots{display:flex;gap:6px;align-items:center;}
.cours-dot{width:8px;height:8px;border-radius:50%;background:var(--border);cursor:pointer;transition:background .2s,transform .2s;}
.cours-dot.active{background:var(--accent);transform:scale(1.3);}
.cours-dot.visited{background:var(--accent3);}

/* ===== ACTIVITÉS ===== */
.section-title{font-family:'Playfair Display',serif;font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:16px;}
.activities-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin-bottom:32px;}
.activity-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px;cursor:pointer;transition:box-shadow .2s,transform .2s,border-color .2s;box-shadow:0 2px 12px var(--shadow);}
.activity-card:hover{transform:translateY(-3px);box-shadow:0 8px 28px var(--shadow);border-color:var(--accent);}
.activity-card.active{border-color:var(--accent);box-shadow:0 0 0 3px rgba(45,106,79,.15),0 8px 28px var(--shadow);}
.activity-icon{font-size:2rem;margin-bottom:10px;}
.activity-name{font-family:'Playfair Display',serif;font-size:1rem;font-weight:700;color:var(--text);margin-bottom:6px;}
.activity-desc{font-size:.8rem;color:var(--text2);line-height:1.5;margin-bottom:8px;}
.activity-count{font-family:'IBM Plex Mono',monospace;font-size:.7rem;color:var(--accent);background:var(--bg2);padding:3px 10px;border-radius:20px;display:inline-block;}

/* ===== QUIZ AREA ===== */
.quiz-area{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px;min-height:200px;box-shadow:0 4px 20px var(--shadow);transition:background var(--tr);}
.quiz-placeholder{text-align:center;padding:40px 20px;color:var(--text2);}
.quiz-placeholder .big-icon{font-size:3rem;margin-bottom:14px;}
.quiz-placeholder h3{font-family:'Playfair Display',serif;font-size:1.1rem;color:var(--text);margin-bottom:8px;}
.quiz-placeholder p:not(.ttl){font-size:.85rem;}

/* ===== FLASHCARDS ===== */
.flashcard-scene{perspective:1200px;width:100%;max-width:580px;margin:0 auto 20px;}
.flashcard{width:100%;min-height:200px;position:relative;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.4,0,.2,1);cursor:pointer;border-radius:16px;}
.flashcard.flipped{transform:rotateY(180deg);}
.flashcard-face{position:absolute;width:100%;min-height:200px;backface-visibility:hidden;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:28px 32px;text-align:center;border:1px solid var(--border);}
.flashcard-front{background:var(--card2);}
.flashcard-back{background:linear-gradient(135deg,var(--accent),var(--accent2));transform:rotateY(180deg);}
.card-label{font-family:'IBM Plex Mono',monospace;font-size:.65rem;text-transform:uppercase;letter-spacing:2px;color:var(--text2);margin-bottom:12px;}
.flashcard-back .card-label{color:rgba(255,255,255,.7);}
.card-text{font-family:'Playfair Display',serif;font-size:clamp(.95rem,2vw,1.1rem);font-weight:700;color:var(--text);line-height:1.5;}
.flashcard-back .card-text{color:#fff;}
.card-hint{font-size:.72rem;color:var(--text2);margin-top:14px;font-style:italic;}
.flashcard-section-tag{font-family:'IBM Plex Mono',monospace;font-size:.65rem;color:var(--text2);margin-top:14px;background:var(--bg2);padding:3px 10px;border-radius:20px;}
.flash-assess{display:none;gap:12px;justify-content:center;margin-top:16px;}
.flash-assess.visible{display:flex;}
.flash-assess-btn{flex:1;max-width:200px;padding:12px 20px;border:none;border-radius:12px;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.88rem;font-weight:600;transition:opacity .2s,transform .15s;}
.flash-assess-btn.didnt{background:rgba(192,57,43,.12);color:var(--wrong);}
.flash-assess-btn.knew{background:rgba(45,106,79,.12);color:var(--correct);}
.flash-assess-btn:hover{opacity:.8;transform:translateY(-1px);}
.card-nav{display:flex;align-items:center;justify-content:space-between;margin-top:14px;}
.btn-nav{background:var(--bg2);border:1px solid var(--border);color:var(--text);padding:8px 16px;border-radius:8px;cursor:pointer;font-size:.82rem;font-family:'DM Sans',sans-serif;font-weight:600;transition:background .2s;}
.btn-nav:hover:not(:disabled){background:var(--accent);color:#fff;}
.btn-nav:disabled{opacity:.35;cursor:not-allowed;}
.card-counter{font-family:'IBM Plex Mono',monospace;font-size:.75rem;color:var(--text2);}

/* ===== QCM ===== */
.qcm-question{font-family:'Playfair Display',serif;font-size:clamp(1rem,2vw,1.2rem);font-weight:700;color:var(--text);margin-bottom:20px;line-height:1.5;}
.qcm-options{display:flex;flex-direction:column;gap:10px;margin-bottom:16px;}
.qcm-option{background:var(--card2);border:2px solid var(--border);border-radius:10px;padding:14px 18px;text-align:left;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.9rem;color:var(--text);transition:border-color .2s,background .2s,transform .15s;line-height:1.4;}
.qcm-option:hover:not(:disabled){border-color:var(--accent);background:rgba(45,106,79,.06);transform:translateX(3px);}
.qcm-option.correct{border-color:var(--correct);background:rgba(45,106,79,.12);color:var(--correct);font-weight:600;}
.qcm-option.wrong{border-color:var(--wrong);background:rgba(192,57,43,.1);color:var(--wrong);}
.explanation{background:var(--bg2);border-left:4px solid var(--accent2);border-radius:0 8px 8px 0;padding:12px 16px;font-size:.83rem;color:var(--text2);line-height:1.6;margin-top:8px;}

/* ===== VRAI/FAUX ===== */
.tf-statement{font-family:'Playfair Display',serif;font-size:clamp(1rem,2vw,1.15rem);font-weight:700;color:var(--text);margin-bottom:24px;line-height:1.5;text-align:center;padding:20px;background:var(--card2);border-radius:12px;border:1px solid var(--border);}
.tf-buttons{display:flex;gap:12px;justify-content:center;margin-bottom:16px;}
.tf-btn{flex:1;max-width:160px;padding:14px 20px;border:none;border-radius:12px;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.95rem;font-weight:700;transition:opacity .2s,transform .15s;}
.tf-btn.vrai{background:rgba(45,106,79,.12);color:var(--correct);}
.tf-btn.faux{background:rgba(192,57,43,.1);color:var(--wrong);}
.tf-btn:hover:not(:disabled){opacity:.75;transform:scale(1.04);}
.tf-btn.selected-correct{background:var(--correct);color:#fff;}
.tf-btn.selected-wrong{background:var(--wrong);color:#fff;}

/* ===== ASSOCIATIONS ===== */
.dnd-layout{display:flex;flex-direction:column;gap:10px;}
.dnd-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:stretch;}
@media(max-width:560px){.dnd-row{grid-template-columns:1fr;}}
.dnd-term{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:12px 15px;font-size:.85rem;font-weight:600;color:var(--text);display:flex;align-items:center;}
.dnd-drop{background:var(--card2);border:2px dashed var(--border);border-radius:10px;padding:12px 15px;font-size:.83rem;color:var(--text2);min-height:48px;display:flex;align-items:center;transition:border-color .2s,background .2s;}
.dnd-drop.drag-over{border-color:var(--accent);background:rgba(45,106,79,.07);}
.dnd-drop.filled{border-style:solid;border-color:var(--accent3);background:rgba(116,198,157,.08);display:flex;align-items:center;justify-content:space-between;gap:8px;}
.dnd-drop.correct-drop{border-color:var(--correct);background:rgba(45,106,79,.1);border-style:solid;color:var(--correct);font-weight:600;}
.dnd-drop.wrong-drop{border-color:var(--wrong);background:rgba(192,57,43,.08);border-style:solid;animation:shake .35s;}
.dnd-drop.reveal-drop{border-color:var(--correct);background:rgba(45,106,79,.08);border-style:solid;}
.dnd-chips{display:flex;flex-wrap:wrap;gap:8px;}
.dnd-chip{background:var(--card);border:1.5px solid var(--accent);border-radius:8px;padding:9px 14px;font-size:.82rem;cursor:grab;transition:all .2s;color:var(--text);line-height:1.3;}
.dnd-chip:hover{background:var(--accent);color:#fff;transform:scale(1.02);}
.dnd-chip.dragging{opacity:.4;cursor:grabbing;}
.dnd-ghost{position:fixed;pointer-events:none;z-index:9999;background:var(--accent);color:#fff;padding:9px 16px;border-radius:8px;font-size:.82rem;box-shadow:0 6px 24px rgba(0,0,0,.25);transform:translate(-50%,-50%);}
.assoc-validate{background:var(--accent);color:#fff;border:none;padding:12px 28px;border-radius:10px;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.9rem;font-weight:600;display:none;transition:opacity .2s,transform .15s;}
.assoc-validate.visible{display:inline-block;}
.assoc-validate:hover{opacity:.85;transform:translateY(-2px);}
.assoc-feedback{display:none;margin-top:12px;padding:10px 14px;border-radius:8px;font-size:.83rem;font-weight:600;line-height:1.5;}
.assoc-feedback.correct{display:block;background:rgba(45,106,79,.12);border-left:4px solid var(--correct);color:var(--correct);}
.assoc-feedback.wrong{display:block;background:rgba(192,57,43,.1);border-left:4px solid var(--wrong);color:var(--wrong);}
@keyframes shake{0%,100%{transform:translateX(0)} 25%{transform:translateX(-7px)} 75%{transform:translateX(7px)}}
@keyframes revealPop{0%{transform:scale(.97);}60%{transform:scale(1.03);}100%{transform:scale(1);}}
.assoc-click-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
@media(max-width:560px){.assoc-click-grid{grid-template-columns:1fr;}}
.assoc-click-col-title{font-family:'IBM Plex Mono',monospace;font-size:.68rem;text-transform:uppercase;letter-spacing:2px;color:var(--text2);margin-bottom:10px;}
.assoc-click-item{background:var(--card2);border:2px solid var(--border);border-radius:11px;padding:12px 15px;margin-bottom:8px;cursor:pointer;font-size:.83rem;transition:all .2s;line-height:1.4;position:relative;}
.assoc-click-item:hover:not(.ac-matched):not(.ac-disabled){border-color:var(--accent);transform:translateX(2px);}
.assoc-click-item.ac-sel-term{border-color:var(--accent);background:rgba(45,106,79,.13);box-shadow:0 0 0 3px rgba(45,106,79,.15);transform:translateX(3px);}
.assoc-click-item.ac-sel-def{border-color:var(--accent3);background:rgba(116,198,157,.13);box-shadow:0 0 0 3px rgba(116,198,157,.2);transform:translateX(-3px);}
.assoc-click-item.ac-matched{border-color:var(--correct);background:rgba(45,106,79,.13);cursor:default;opacity:.72;}
.assoc-click-item.ac-matched::after{content:'✓';position:absolute;right:10px;top:50%;transform:translateY(-50%);color:var(--correct);font-weight:800;}
.assoc-click-item.ac-wrong{border-color:var(--wrong);background:rgba(192,57,43,.1);animation:shake .35s;}
.assoc-click-item.ac-reveal{border-color:var(--correct);background:rgba(45,106,79,.1);animation:revealPop .4s ease;}
.assoc-click-item.ac-disabled{opacity:.5;cursor:default;pointer-events:none;}
.wave-format-badge{display:inline-block;font-size:.68rem;font-weight:700;padding:3px 10px;border-radius:20px;margin-left:8px;vertical-align:middle;}
.wave-format-badge.click{background:rgba(45,106,79,.15);color:var(--accent);}
.wave-format-badge.drag{background:rgba(116,198,157,.18);color:var(--accent2);}

/* ===== BLANCS ===== */
.blank-sentence{font-family:'Playfair Display',serif;font-size:1.08rem;line-height:1.8;color:var(--text);margin-bottom:24px;text-align:center;padding:24px;background:var(--card2);border-radius:12px;border:1px solid var(--border);}
.blank-input{background:var(--bg);border:2px solid var(--accent);border-radius:6px;color:var(--text);font-family:'DM Sans',sans-serif;font-size:.9rem;padding:4px 10px;width:160px;outline:none;transition:border-color .2s;}
.blank-input:focus{border-color:var(--accent2);}
.blank-input.correct-input{border-color:var(--correct);background:rgba(45,106,79,.1);}
.blank-input.wrong-input{border-color:var(--wrong);background:rgba(192,57,43,.1);}
.blank-submit{background:var(--accent);color:#fff;border:none;padding:12px 32px;border-radius:10px;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.9rem;font-weight:600;display:block;margin:0 auto;transition:opacity .2s,transform .15s;}
.blank-submit:hover{opacity:.85;transform:translateY(-2px);}
.feedback{text-align:center;margin-top:12px;font-size:.82rem;font-weight:600;}
.feedback.correct{color:var(--correct);} .feedback.wrong{color:var(--wrong);}
.btn-next{background:var(--accent);color:#fff;border:none;padding:12px 32px;border-radius:10px;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.9rem;font-weight:600;margin-top:20px;display:block;margin-left:auto;transition:opacity .2s,transform .15s;}
.btn-next:hover{opacity:.85;transform:translateY(-2px);}
.q-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:8px;}
.q-badge{font-family:'IBM Plex Mono',monospace;font-size:.7rem;background:var(--bg2);border:1px solid var(--border);color:var(--accent);padding:4px 10px;border-radius:100px;text-transform:uppercase;letter-spacing:1px;}
.q-num{font-family:'IBM Plex Mono',monospace;font-size:.75rem;color:var(--text2);}
.mode-indicator{font-family:'IBM Plex Mono',monospace;font-size:.7rem;text-transform:uppercase;letter-spacing:1px;color:var(--accent);background:var(--bg2);border:1px solid var(--border);padding:3px 10px;border-radius:100px;}

/* ===== MODALS ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);backdrop-filter:blur(8px);z-index:200;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s;}
.modal-overlay.open{opacity:1;pointer-events:all;}
.modal{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:36px;max-width:520px;width:92%;transform:scale(.9);transition:transform .3s,background var(--tr);box-shadow:0 20px 60px rgba(0,0,0,.3);position:relative;max-height:90vh;overflow-y:auto;}
.modal-overlay.open .modal{transform:scale(1);}
.modal-icon{font-size:3rem;margin-bottom:14px;text-align:center;}
.modal h2{font-family:'Playfair Display',serif;font-size:1.5rem;margin-bottom:12px;color:var(--text);text-align:center;}
.modal-score{font-family:'IBM Plex Mono',monospace;font-size:2.4rem;font-weight:700;color:var(--accent);margin:14px 0;text-align:center;}
.modal p:not(.ttl){color:var(--text2);font-size:.88rem;line-height:1.6;margin-bottom:8px;text-align:center;}
.modal-btn{background:var(--accent);color:#fff;border:none;padding:13px 32px;border-radius:12px;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.95rem;font-weight:600;margin-top:18px;transition:opacity .2s;display:block;width:100%;}
.modal-btn:hover{opacity:.85;}
.modal-btn-sec{background:var(--bg2);color:var(--accent);border:1.5px solid var(--border);margin-top:10px;}
.export-row{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap;}
.export-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 6px;border-radius:10px;border:1.5px solid var(--border);background:var(--card2);color:var(--text);cursor:pointer;font-family:'DM Sans',sans-serif;font-size:.75rem;font-weight:600;transition:all .2s;}
.export-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 16px var(--shadow);}
.export-btn .export-icon{font-size:1.3rem;}
.modal-close{position:absolute;top:14px;right:18px;background:none;border:none;font-size:1.4rem;cursor:pointer;color:var(--text2);}

/* ===== DIAGNOSTIC ===== */
.diag-section{margin-top:24px;border-top:1px solid var(--border);padding-top:20px;}
.diag-title{font-family:'Playfair Display',serif;font-size:1.05rem;font-weight:700;color:var(--text);margin-bottom:16px;text-align:left;}
.diag-theme{margin-bottom:16px;}
.diag-theme-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:5px;}
.diag-theme-name{font-size:.84rem;font-weight:600;color:var(--text);text-align:left;}
.diag-theme-score{font-family:'IBM Plex Mono',monospace;font-size:.75rem;color:var(--text2);}
.diag-bar-outer{height:9px;background:var(--border);border-radius:100px;overflow:hidden;margin-bottom:5px;}
.diag-bar-inner{height:100%;border-radius:100px;transition:width 1s ease .3s;}
.diag-status{font-size:.76rem;font-style:italic;display:flex;align-items:center;gap:6px;text-align:left;}
.diag-reco{font-size:.76rem;color:var(--text2);margin-top:4px;padding:7px 10px;background:var(--bg2);border-radius:6px;text-align:left;line-height:1.55;}
.diag-reco a{color:var(--accent);text-decoration:underline;cursor:pointer;}

/* ===== FAB =====
   Bas 84 px et non 28 : core/a11y.css pose #a11y-btn en bas à droite (bas
   20 px, 52 px de côté, z-index 99990) sur toutes les pages. À 28 px, ce
   bouton d'aide se retrouvait recouvert sur 44 × 44 px — 72 % de sa surface —
   par le bouton d'accessibilité (B45). 84 = 20 + 52 + 12 px de respiration.
   Aligné à droite sur 20 px pour que les deux boutons forment une colonne. */
.fab{position:fixed;bottom:84px;right:20px;width:52px;height:52px;border-radius:50%;background:var(--accent);color:#fff;border:none;font-size:1.3rem;cursor:pointer;box-shadow:0 6px 24px var(--shadow);z-index:150;transition:transform .2s;display:flex;align-items:center;justify-content:center;}
.fab:hover{transform:scale(1.1);}
footer{text-align:center;padding:16px;font-family:'IBM Plex Mono',monospace;font-size:.7rem;color:var(--text2);border-top:1px solid var(--border);}
.help-list{text-align:left;margin:16px 0;}
.help-list li{margin-bottom:8px;font-size:.84rem;color:var(--text2);}
.help-list li strong{color:var(--accent);}

/* ===== PRINT ===== */

/* ===== RESPONSIVE MOBILE ===== */
@media(max-width:768px){
  header{padding:10px 16px;gap:8px;}
  .header-left h1{font-size:.9rem;}
  .header-nav{display:none;} /* masqué sur mobile — liens dans footer */
  .score-box{gap:7px;font-size:.8rem;}
  .btn-restart{padding:6px 12px;font-size:.78rem;}
  .progress-wrapper{padding:8px 16px;}
  .main{padding:16px 12px 60px;}
  .cours-section{border-radius:10px;}
  .cours-header{padding:10px 14px;}
  .cours-title{font-size:.85rem;}
  .slide-body{padding:18px 20px;}
  .slide-cover{padding:28px 24px;}
  .slide-cover h1{font-size:clamp(1.1rem,4vw,1.6rem);}
  .activities-grid{grid-template-columns:1fr 1fr;gap:10px;}
  .activity-card{padding:14px 16px;}
  .activity-icon{font-size:1.5rem;margin-bottom:6px;}
  .quiz-area{padding:18px 14px;}
  .modal{padding:24px 18px;}
  .export-row{flex-wrap:wrap;}
  .export-btn{min-width:calc(50% - 4px);}
  .tf-buttons{gap:8px;}
  .tf-btn{max-width:none;flex:1;}
  .flash-assess-btn{max-width:none;flex:1;}
}

@media(max-width:480px){
  .activities-grid{grid-template-columns:1fr;}
  .header-right{gap:8px;}
  .theme-dots{gap:5px;}
  .theme-dot{width:18px;height:18px;}
  .cours-controls{gap:5px;}
  .cours-btn{padding:5px 10px;font-size:.74rem;}
  .cours-page-indicator{padding:5px 8px;font-size:.72rem;min-width:64px;}
  .slide-body{padding:14px 14px;}
  .slide-cover{padding:22px 18px;}
  .tf-buttons{flex-direction:column;align-items:center;}
  .tf-btn{width:100%;max-width:280px;}
  .flash-assess{flex-direction:column;align-items:center;}
  .flash-assess-btn{width:100%;max-width:280px;}
  .export-row{flex-direction:column;}
  .export-btn{width:100%;}
  .modal{padding:20px 14px;}
  .dnd-row{grid-template-columns:1fr;}
}

/* Liens nav mobile : affichés en footer sur petits écrans */
@media(max-width:768px){
  footer{
    display:flex;flex-direction:column;align-items:center;gap:10px;padding:20px 16px;
  }
  .footer-nav-mobile{display:flex;gap:10px;}
}
@media(min-width:769px){
  .footer-nav-mobile{display:none;}
}

@media print{
  header,footer,.progress-wrapper,.main,.fab,#helpModal,.modal-overlay{display:none!important;}
  #printArea{display:block!important;}
  body{background:#fff;color:#000;}
  .print-header{text-align:center;margin-bottom:24px;border-bottom:2px solid #2d6a4f;padding-bottom:16px;}
  .print-score{font-size:2rem;font-weight:900;color:#2d6a4f;}
  .print-theme{margin:12px 0;padding:10px 14px;border-left:4px solid #2d6a4f;background:#f7faf7;}
  .print-theme-name{font-weight:700;font-size:.95rem;}
  .print-bar-outer{height:10px;background:#e4ede4;border-radius:20px;margin:6px 0;}
  .print-bar-inner{height:100%;border-radius:20px;}
  .print-reco{font-size:.82rem;color:#4a6050;margin-top:4px;}
}
#printArea{display:none;}

/* ===== NAVIGATION — 3 BOUTONS HEADER ===== */
.header-nav{
  display:flex;align-items:center;gap:6px;margin-right:8px;
}
.nav-btn-back{
  display:inline-flex;align-items:center;gap:5px;
  padding:6px 13px;border-radius:999px;
  font-size:.74rem;font-weight:700;letter-spacing:.02em;
  text-decoration:none;transition:all .2s;white-space:nowrap;
  background:var(--card2);border:1.5px solid var(--border);color:var(--text2);
  font-family:'DM Sans',sans-serif;
}
.nav-btn-back:hover{
  background:var(--accent);color:#fff;
  border-color:var(--accent);text-decoration:none;transform:translateY(-1px);
}
.nav-btn-icon{font-size:.85rem;line-height:1;}
/* Bouton matière : couleur accent pour le distinguer */
.nav-btn-matiere{
  background:var(--acL,rgba(46,74,122,.08));
  border-color:var(--accent);color:var(--accent);
}
.nav-btn-matiere:hover{background:var(--accent);color:#fff;}

/* Lien vers le cours du chapitre (injecté par exo-shell.js) */
.cours-chapter-link{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 20px;margin:14px 0 20px;
  border-radius:999px;font-size:.82rem;font-weight:700;
  text-decoration:none;transition:all .2s;
  background:var(--card2);border:1.5px solid var(--accent);
  color:var(--accent);font-family:'DM Sans',sans-serif;
}
.cours-chapter-link:hover{
  background:var(--accent);color:#fff;text-decoration:none;
  transform:translateY(-1px);box-shadow:0 4px 14px var(--shadow);
}