/* Froid Industriel — Le Jeu · design Claymorphism (indigo/orange) */
:root{
  --primary:#4F46E5;--primary-dark:#3730A3;--primary-soft:#6366F1;--secondary:#818CF8;
  --accent:#EA580C;--accent-soft:#FB923C;--bg:#EEF2FF;--fg:#1E1B4B;--muted:#EBEEF8;
  --border:#C7D2FE;--danger:#DC2626;--ok:#059669;--ice:#38BDF8;--ice-soft:#E0F2FE;--ink-soft:#4B4A78;
  --r-lg:26px;--r-md:18px;
  --sh-clay:0 10px 0 -2px rgba(79,70,229,.13),0 18px 34px rgba(30,27,75,.10);
  --sh-in:inset 0 -5px 0 rgba(79,70,229,.07),inset 0 3px 0 rgba(255,255,255,.7);
  --ff-head:'Fredoka',system-ui,sans-serif;--ff-body:'Nunito',system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--ff-body);font-size:16.5px;line-height:1.6;min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--ff-head);font-weight:600;line-height:1.2;margin:0}
p{margin:0 0 .7em}
a{color:var(--primary-dark)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:10px}
::selection{background:var(--secondary);color:#fff}
.bg-glow{position:fixed;inset:0;z-index:-2;pointer-events:none;background:
  radial-gradient(58% 44% at 12% 6%,rgba(129,140,248,.45),transparent 70%),
  radial-gradient(46% 38% at 88% 4%,rgba(56,189,248,.34),transparent 72%),
  radial-gradient(52% 46% at 76% 96%,rgba(234,88,12,.16),transparent 70%),
  linear-gradient(180deg,#F5F7FF,#EEF2FF 45%,#E9EFFF)}
.snow{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.snow i{position:absolute;top:-6vh;color:var(--secondary);animation:fall linear infinite}
.snow i svg{width:14px;height:14px}
@keyframes fall{0%{transform:translate3d(0,-10vh,0) rotate(0)}100%{transform:translate3d(22px,112vh,0) rotate(220deg)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes pop{50%{transform:scale(1.16)}}
@keyframes shake{25%{transform:translateX(-7px)}50%{transform:translateX(6px)}75%{transform:translateX(-3px)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes rise{from{transform:translateY(28px) scale(.95);opacity:0}}
@keyframes slideIn{from{transform:translateX(40px);opacity:0}}
.app{max-width:1180px;margin:0 auto;padding:22px 18px 64px}
.fade-up{animation:fadeUp .5s both}

/* barre de navigation */
.navbar{position:sticky;top:0;z-index:40;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding:12px 20px;
  background:rgba(255,255,255,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:3px solid rgba(199,210,254,.85)}
.nav-brand{display:flex;align-items:center;gap:11px}
.nav-logo{display:grid;place-items:center;width:44px;height:44px;border-radius:15px;color:#fff;border:3px solid #fff;
  background:linear-gradient(160deg,var(--primary-soft),var(--primary-dark));box-shadow:0 5px 0 rgba(0,0,0,.16)}
.nav-logo svg{width:23px;height:23px;animation:spin 9s linear infinite}
.nav-title{font-family:var(--ff-head);font-size:23px;letter-spacing:-.3px}
.nav-badge{font-size:11.5px;font-weight:800;letter-spacing:.11em;text-transform:uppercase;background:var(--accent);color:#fff;padding:4px 10px;border-radius:999px}
.nav-hud{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.hud-chip{display:inline-flex;align-items:center;gap:6px;background:#fff;border:2.5px solid var(--border);border-radius:999px;
  padding:6px 13px;font-weight:800;font-size:14px;color:var(--primary-dark);box-shadow:0 3px 0 rgba(79,70,229,.12)}
.hud-chip svg{width:16px;height:16px;color:var(--accent)}
.hud-chip b{font-size:15px}
.icon-btn{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:#fff;border:2.5px solid var(--border);
  color:var(--primary-dark);box-shadow:0 3px 0 rgba(79,70,229,.12);transition:transform .18s,background .2s}
.icon-btn:hover{transform:translateY(-2px);background:var(--ice-soft)}
.icon-btn svg{width:18px;height:18px}
.icon-btn.off{color:#9AA0C8;background:var(--muted)}
/* boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 24px;border:3px solid transparent;border-radius:999px;
  font-family:var(--ff-head);font-size:17px;color:#fff;background:var(--primary);box-shadow:0 5px 0 rgba(0,0,0,.16);
  transition:transform .16s ease-out,box-shadow .16s,filter .2s}
.btn:hover{transform:translateY(-2px) scale(1.015);filter:brightness(1.06);box-shadow:0 8px 0 rgba(0,0,0,.16)}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 rgba(0,0,0,.16)}
.btn svg{width:19px;height:19px}
.btn.accent{background:var(--accent)}
.btn.ghost{background:#fff;color:var(--primary-dark);border-color:var(--border);box-shadow:0 4px 0 rgba(79,70,229,.14)}
.btn.sm{padding:9px 17px;font-size:15px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* cartes, accueil, progression */
.footer{padding:20px;text-align:center;color:var(--ink-soft);font-size:14px;border-top:3px solid rgba(199,210,254,.85);background:rgba(255,255,255,.55)}
.foot-note{font-size:12.5px;max-width:760px;margin:6px auto 0;opacity:.85}
.card{background:#fff;border:3px solid var(--border);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-clay),var(--sh-in)}
.card.soft{background:linear-gradient(180deg,#fff,#F8FAFF)}
.card-title{font-size:20px;margin-bottom:6px}
.lead{color:var(--ink-soft);font-size:17px}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.15em;text-transform:uppercase;color:var(--primary-soft);display:block;margin-bottom:8px}
.stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.stat{flex:1 1 130px;background:var(--ice-soft);border:2.5px solid #BAE6FD;border-radius:var(--r-md);padding:12px 14px;text-align:center}
.stat b{display:block;font-family:var(--ff-head);font-size:26px;color:var(--primary-dark)}
.stat span{font-size:13.5px;font-weight:700;color:var(--ink-soft)}
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:center;margin-bottom:26px}
.hero h1{font-size:clamp(30px,5.2vw,50px);letter-spacing:-1px}
.hero h1 em{font-style:normal;color:var(--accent);position:relative}
.progress-wrap{margin-top:18px}
.progress-top{display:flex;justify-content:space-between;font-weight:800;font-size:14px;margin-bottom:7px}
.bar{height:17px;background:var(--muted);border:2.5px solid var(--border);border-radius:999px;overflow:hidden}
.bar>i{display:block;height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--ice),var(--primary-soft),var(--primary));transition:width .7s cubic-bezier(.3,1.4,.5,1)}
.level-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(272px,1fr));gap:18px;margin-top:8px}
.level{position:relative;display:flex;flex-direction:column;gap:10px;text-align:left;background:#fff;border:3px solid var(--border);
  border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-clay),var(--sh-in);transition:transform .2s ease-out,box-shadow .2s,border-color .2s}
.level:hover{transform:translateY(-4px);border-color:var(--secondary);box-shadow:0 14px 0 -2px rgba(79,70,229,.16),0 24px 40px rgba(30,27,75,.14)}
.level-ic{display:grid;place-items:center;width:54px;height:54px;border-radius:18px;border:3px solid #fff;background:linear-gradient(160deg,#EEF2FF,#C7D2FE);color:var(--primary-dark)}
.level-ic svg{width:26px;height:26px}
.level h3{font-size:20px}
.level p{font-size:14.5px;color:var(--ink-soft);margin:0;flex:1}
.level-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;font-weight:800}
.tag{background:var(--muted);border:2px solid var(--border);border-radius:999px;padding:3px 11px;color:var(--primary-dark)}
.level.done{border-color:#86EFAC}
.level.done .level-ic{background:linear-gradient(160deg,#DCFCE7,#86EFAC);color:#065F46}
.lvlnum{position:absolute;top:-14px;right:18px;background:var(--fg);color:#fff;font-family:var(--ff-head);font-size:13px;padding:3px 12px;border-radius:999px;border:3px solid #fff}
.stars{display:inline-flex;gap:3px;color:#D8DCF2}
.stars svg{width:18px;height:18px}
.stars .on{color:#F59E0B;fill:#FBBF24}

/* en-tête de niveau, encadrés */
.level-head{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:18px}
.level-head h2{font-size:clamp(23px,3.4vw,33px);letter-spacing:-.5px}
.level-head .sub{color:var(--ink-soft);font-size:15.5px;margin:0}
.level-head>div{flex:1;min-width:210px}
.backbar{margin-bottom:14px}
.hint{display:flex;gap:10px;align-items:flex-start;background:#FFF7ED;border:2.5px dashed var(--accent-soft);border-radius:var(--r-md);
  padding:12px 15px;font-size:15px;font-weight:600;color:#7C2D12;margin-bottom:18px}
.hint svg{width:19px;height:19px;flex:0 0 auto;margin-top:2px}
.grid2{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:start}
.mt{margin-top:20px}.mt-s{margin-top:12px}.center{text-align:center}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.pill{background:#fff;border:2.5px solid var(--border);border-radius:999px;padding:5px 14px;font-size:13.5px;font-weight:800;color:var(--primary-dark)}
/* cartes à retourner */
.flip-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:18px}
.flip{perspective:1400px;background:none;border:0;padding:0;min-height:252px;text-align:left;cursor:pointer}
.flip-in{position:relative;width:100%;height:100%;min-height:252px;transition:transform .62s cubic-bezier(.4,.1,.2,1);transform-style:preserve-3d}
.flip.flipped .flip-in{transform:rotateY(180deg)}
.flip-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:var(--r-lg);padding:20px;
  display:flex;flex-direction:column;gap:10px;border:3px solid var(--border);background:#fff;box-shadow:var(--sh-clay),var(--sh-in)}
.flip-face.front{align-items:flex-start;justify-content:space-between;background:linear-gradient(165deg,#fff,#EFF3FF)}
.flip-face .ic{display:grid;place-items:center;width:52px;height:52px;border-radius:17px;color:#fff;border:3px solid #fff;background:linear-gradient(160deg,var(--ice),var(--primary))}
.flip-face .ic svg{width:26px;height:26px}
.flip-face h3{font-size:19px}
.flip-face .front-txt{font-size:15px;color:var(--ink-soft);flex:1}
.flip-face .tap,.back-tap{font-size:12.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--primary-soft);display:inline-flex;align-items:center;gap:6px}
.flip-face .tap svg{width:15px;height:15px}
.flip-face.back{transform:rotateY(180deg);justify-content:space-between;background:linear-gradient(165deg,var(--primary-dark),#312E81);border-color:#312E81;color:#EEF2FF}
.flip-face.back h4{font-size:15px;color:#fff}
.flip-face.back ul{margin:0;padding-left:19px;display:flex;flex-direction:column;gap:8px;overflow:auto}
.flip-face.back li{font-size:14.5px;line-height:1.45}
.flip-face.back li::marker{color:var(--accent-soft)}
.flip-face.back .back-tap{color:var(--secondary)}
/* lexique */
.lex-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:13px}
.lex{position:relative;background:#fff;border:3px solid var(--border);border-radius:22px;padding:14px 10px;text-align:center;
  box-shadow:0 6px 0 -1px rgba(79,70,229,.12);transition:transform .18s ease-out,background .2s,border-color .2s}
.lex:hover{transform:translateY(-4px) rotate(-1.2deg);border-color:var(--secondary)}
.lex b{display:block;font-family:var(--ff-head);font-size:30px;line-height:1.05;color:var(--primary)}
.lex span{display:block;font-size:12.5px;font-weight:800;color:var(--ink-soft);margin-top:4px}
.lex.learned{background:linear-gradient(165deg,#DCFCE7,#F0FDF4);border-color:#86EFAC}
.lex.learned b{color:#047857}
.lex.learned::after{content:'✓';position:absolute;top:5px;right:9px;font-size:13px;font-weight:900;color:#059669}
.lex-detail{margin-top:20px}
.lex-detail .letter{font-family:var(--ff-head);font-size:58px;line-height:1;color:var(--ice)}

/* quiz, remise en ordre, association, situations */
.qbox{max-width:820px}
.qcount{font-size:13.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--primary-soft)}
.qtext{font-family:var(--ff-head);font-size:clamp(20px,3vw,27px);margin:10px 0 20px;line-height:1.32}
.opts{display:grid;gap:12px}
.opt{display:flex;gap:13px;align-items:flex-start;text-align:left;background:#fff;border:3px solid var(--border);border-radius:var(--r-md);
  padding:15px 18px;font-size:16.5px;font-weight:600;color:var(--fg);box-shadow:0 5px 0 -1px rgba(79,70,229,.13);
  transition:transform .16s,background .2s,border-color .2s}
.opt:hover:not([disabled]){transform:translateY(-3px);border-color:var(--secondary);background:#F7F9FF}
.opt .k{flex:0 0 auto;display:grid;place-items:center;width:29px;height:29px;border-radius:10px;background:var(--muted);
  border:2px solid var(--border);font-family:var(--ff-head);font-size:15px}
.opt.correct{background:#ECFDF5;border-color:#34D399}
.opt.correct .k{background:#A7F3D0;border-color:#34D399}
.opt.wrong{background:#FEF2F2;border-color:#F87171}
.opt.wrong .k{background:#FECACA;border-color:#F87171}
.opt .mark{margin-left:auto;flex:0 0 auto}
.opt .mark svg{width:21px;height:21px}
.opt.correct .mark{color:var(--ok)}
.opt.wrong .mark{color:var(--danger)}
.explain{margin-top:16px;border-left:6px solid var(--ice)}
.explain b{color:var(--primary-dark)}
.order-list{display:grid;gap:11px}
.oitem{display:flex;gap:13px;align-items:center;text-align:left;background:#fff;border:3px solid var(--border);border-radius:var(--r-md);
  padding:14px 17px;font-size:16px;font-weight:600;box-shadow:0 5px 0 -1px rgba(79,70,229,.13);transition:transform .16s,border-color .2s,background .2s}
.oitem:hover[data-locked="0"]{transform:translateY(-3px);border-color:var(--secondary)}
.oitem .pos{flex:0 0 auto;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;font-family:var(--ff-head);font-size:17px}
.oitem[data-locked="1"]{background:#F1F5FF;border-color:#86EFAC}
.oitem[data-locked="1"] .pos{background:var(--ok)}
.oitem.bad{animation:shake .4s;border-color:var(--danger)}
.match-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(196px,1fr));gap:12px}
.mtile{min-height:96px;display:flex;flex-direction:column;gap:6px;justify-content:center;background:#fff;border:3px solid var(--border);
  border-radius:var(--r-md);padding:13px;font-size:14.5px;font-weight:700;text-align:left;box-shadow:0 5px 0 -1px rgba(79,70,229,.13);
  transition:transform .16s,border-color .2s,background .2s}
.mtile:hover{transform:translateY(-3px);border-color:var(--secondary)}
.mtile small{font-size:11.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--primary-soft)}
.mtile.sel{border-color:var(--accent);background:#FFF7ED}
.mtile.ok{border-color:#86EFAC;background:#ECFDF5;opacity:.62;cursor:default}
.mtile.err{animation:shake .4s;border-color:var(--danger)}
.case-flag{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;
  color:#7C2D12;background:#FFEDD5;border:2.5px solid var(--accent-soft);border-radius:999px;padding:4px 13px;margin-bottom:12px}
.case-flag svg{width:15px;height:15px}
.case-sit{border-left:6px solid var(--accent);font-size:16.5px;background:#FFFCF8}

/* fenêtre de résultat, badges, certificat, notifications */
.overlay{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:18px;background:rgba(30,27,75,.55);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fadeUp .28s both}
.sheet{width:100%;max-width:520px;background:#fff;border:3px solid var(--border);border-radius:30px;padding:28px;text-align:center;
  box-shadow:0 26px 60px rgba(30,27,75,.35);animation:rise .45s cubic-bezier(.3,1.4,.5,1) both}
.sheet .big-ic{display:grid;place-items:center;width:82px;height:82px;margin:0 auto 14px;border-radius:28px;color:#fff;border:4px solid #fff;
  background:linear-gradient(160deg,var(--ice),var(--primary))}
.sheet .big-ic svg{width:40px;height:40px}
.sheet h3{font-size:26px;margin-bottom:6px}
.sheet .score-line{font-family:var(--ff-head);font-size:20px;color:var(--accent);margin:10px 0 4px}
.star-row{display:flex;justify-content:center;gap:9px;margin:14px 0 18px}
.star-row svg{width:40px;height:40px;color:#D8DCF2;transition:transform .4s,color .3s}
.star-row svg.on{color:#FBBF24;fill:#FBBF24;animation:pop .5s both}
.star-row svg.on:nth-child(2){animation-delay:.14s}
.star-row svg.on:nth-child(3){animation-delay:.28s}
.badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(166px,1fr));gap:12px}
.badge{display:flex;gap:11px;align-items:center;background:#fff;border:3px solid var(--border);border-radius:var(--r-md);padding:12px;
  opacity:.55;filter:grayscale(.7)}
.badge.on{opacity:1;filter:none;border-color:#FCD34D;background:linear-gradient(165deg,#FFFBEB,#fff)}
.badge .bi{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:var(--muted);color:var(--primary-dark)}
.badge.on .bi{background:linear-gradient(160deg,#FDE68A,#F59E0B);color:#78350F}
.badge .bi svg{width:21px;height:21px}
.badge b{display:block;font-size:14.5px}
.badge span{font-size:12.5px;color:var(--ink-soft);font-weight:700}
.cert{border:5px double var(--primary-soft);border-radius:24px;padding:30px;text-align:center;background:linear-gradient(170deg,#fff,#F5F7FF)}
.cert h3{font-size:clamp(23px,3.6vw,32px);color:var(--primary-dark)}
.cert .name{font-family:var(--ff-head);font-size:clamp(26px,5vw,40px);color:var(--accent);margin:12px 0;border-bottom:3px dashed var(--border);padding-bottom:10px}
.cert .seal{display:flex;justify-content:center;gap:26px;flex-wrap:wrap;margin-top:18px;font-weight:800;font-size:14px}
.cert .seal div{background:#fff;border:2.5px solid var(--border);border-radius:var(--r-md);padding:10px 18px}
.toast-wrap{position:fixed;right:18px;bottom:18px;z-index:80;display:flex;flex-direction:column;gap:10px;max-width:330px}
.toast{display:flex;gap:11px;align-items:center;background:#fff;border:3px solid var(--primary-soft);border-radius:var(--r-md);
  padding:13px 16px;font-weight:700;font-size:15px;box-shadow:0 12px 28px rgba(30,27,75,.22);animation:slideIn .35s both}
.toast svg{width:21px;height:21px;flex:0 0 auto;color:var(--primary)}
.toast.good{border-color:#86EFAC}.toast.good svg{color:var(--ok)}
.toast.bad{border-color:#FCA5A5}.toast.bad svg{color:var(--danger)}
/* schéma du cycle */
.cycle-svg{width:100%;height:auto;max-width:640px;display:block;margin:0 auto}
.cycle-svg .pipe{fill:none;stroke:var(--secondary);stroke-width:7;stroke-linecap:round;stroke-dasharray:14 12;animation:flow 2.6s linear infinite}
.cycle-svg .node{fill:#fff;stroke:var(--primary);stroke-width:4}
.cycle-svg text{font-family:var(--ff-head);font-size:15px;fill:var(--fg)}
.cycle-svg .temp{font-family:var(--ff-body);font-size:12.5px;fill:var(--primary-dark);font-weight:800}
@keyframes flow{to{stroke-dashoffset:-52}}
.cold-tag{color:var(--ice)}.warm-tag{color:var(--accent)}
/* adaptatif et impression */
@media (max-width:900px){.hero{grid-template-columns:1fr}.grid2{grid-template-columns:1fr}}
@media (max-width:640px){
  .app{padding:16px 13px 52px}.navbar{padding:10px 13px}.nav-title{font-size:20px}.nav-badge{display:none}
  .card{padding:17px;border-radius:22px}.level-grid,.flip-grid{grid-template-columns:1fr}
  .lex-grid{grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:9px}.lex b{font-size:25px}
  .match-grid{grid-template-columns:1fr 1fr}.mtile{min-height:88px;font-size:13.5px}
  .btn{padding:12px 19px;font-size:16px;width:100%}.sheet{padding:22px;border-radius:24px}
  .toast-wrap{left:12px;right:12px;bottom:12px;max-width:none}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}.snow{display:none}}
@media print{
  .bg-glow,.snow,.navbar,.footer,.toast-wrap,.backbar,.btn-row,.icon-btn{display:none!important}
  body{background:#fff}.app{max-width:none;padding:0}.card{border:0;box-shadow:none;padding:0}
  .cert{border:4px double #4F46E5;padding:40px}#certInput{display:none}
}