:root{
  /* Identité Voie Libre : asphalte (bleu nuit), panneau d'indication (bleu), marquage (ambre) */
  --brand-ink:#12233d;--brand-ink-2:#1b3254;--accent:#f5b301;--accent-ink:#12233d;
  --bg:#f3f5f9;--surface:#fff;--surface-2:#eceff5;--text:#16213a;--muted:#59647a;--border:#d7dce6;
  --primary:#2251d1;--primary-ink:#fff;--primary-soft:#e4ebfc;
  --ok:#17803d;--ok-soft:#e3f5e9;--ko:#c62828;--ko-soft:#fdecec;--warn:#9a6700;--warn-soft:#fff4d6;
  --radius:12px;--shadow:0 1px 2px rgba(16,24,40,.06),0 2px 8px rgba(16,24,40,.05);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --brand-ink:#0b1626;--brand-ink-2:#14243d;--accent:#f5b301;--accent-ink:#12233d;
  --bg:#0e1522;--surface:#16202f;--surface-2:#1f2b3e;--text:#e8ecf3;--muted:#9ba6b8;--border:#2b3850;
  --primary:#6b93ff;--primary-ink:#0b1020;--primary-soft:#1c2b4b;
  --ok:#4cc477;--ok-soft:#14301f;--ko:#ff6b6b;--ko-soft:#3a1c1e;--warn:#e7b443;--warn-soft:#352a12;
  --shadow:none;color-scheme:dark;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100vh;display:flex;flex-direction:column}
main{flex:1 0 auto;width:100%}
h1,h2,.brand{letter-spacing:-.01em}
a{color:var(--primary)}
img{max-width:100%;height:auto}
h1{font-size:1.6rem;margin:.2em 0 .6em;line-height:1.2}
h2{font-size:1.2rem;margin:1.4em 0 .6em}
.container{max-width:1040px;margin:0 auto;padding:16px}
.narrow{max-width:460px}

/* En-tête */
.topbar{background:var(--brand-ink);color:#fff;position:sticky;top:0;z-index:10;border-bottom:3px solid var(--accent)}
.topbar .container{display:flex;align-items:center;gap:12px;padding-block:10px;flex-wrap:wrap}
.brand{font-weight:800;font-size:1.15rem;text-decoration:none;color:#fff;display:flex;align-items:center;gap:10px;margin-right:auto}
.brand img{width:34px;height:34px;display:block;border-radius:9px;box-shadow:0 0 0 1px #34507d}
.brand small{display:block;font-weight:500;font-size:.72rem;color:#b9c4d8;letter-spacing:.02em;line-height:1.1}
.nav{display:flex;gap:4px;flex-wrap:wrap;align-items:center}
.nav a,.nav button{color:#dfe6f2;text-decoration:none;padding:8px 10px;border-radius:8px;font:inherit;background:none;border:0;cursor:pointer}
.nav a:hover,.nav button:hover{background:var(--brand-ink-2);color:#fff}
.nav a.active{background:var(--brand-ink-2);color:#fff;box-shadow:inset 0 -2px 0 var(--accent)}
.topbar .menu-toggle{display:none;background:var(--brand-ink-2);color:#fff;border-color:#2c446b}
.topbar .menu-toggle:hover{background:#24406a}
.footer{color:var(--muted);font-size:.85rem;text-align:center;padding:24px 16px}
.footer strong{color:var(--text)}

/* Pages d'accueil invité */
.hero{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;margin:12px 0 22px}
.hero img{width:76px;height:76px}
.hero h1{margin:6px 0 0;font-size:1.9rem}
.hero p{margin:0;color:var(--muted)}
.road-divider{height:6px;border-radius:3px;margin:0 auto 18px;width:120px;
  background:repeating-linear-gradient(90deg,var(--accent) 0 18px,transparent 18px 28px)}

/* Tuiles de mode */
.mode-card .icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:1.35rem;background:var(--primary-soft)}
.mode-card.featured{background:var(--brand-ink);color:#fff;border-color:var(--brand-ink)}
.mode-card.featured p{color:#c3cde0}
.mode-card.featured .icon{background:var(--accent)}
.welcome{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.welcome h1{margin:0}
@media (max-width:720px){
  .topbar .menu-toggle{display:inline-flex}
  .nav{display:none;width:100%;flex-direction:column;align-items:stretch}
  .nav.open{display:flex}
  .nav form{display:contents}
}

/* Composants */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:16px}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.grid>.card{margin-bottom:0}
.mode-card{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:inherit;transition:border-color .15s}
.mode-card:hover{border-color:var(--primary)}
.mode-card p{margin:0;color:var(--muted);font-size:.93rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:10px 18px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
.btn:hover{background:var(--surface-2)}
.btn-primary{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}
.btn-primary:hover{background:var(--primary);filter:brightness(1.08)}
.btn-danger{color:var(--ko);border-color:var(--ko)}
.btn-sm{min-height:34px;padding:5px 12px;font-size:.9rem}
.btn-block{width:100%}
.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.muted{color:var(--muted)}
.small{font-size:.88rem}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.8rem;font-weight:600;background:var(--surface-2);color:var(--muted)}
.badge-ok{background:var(--ok-soft);color:var(--ok)}
.badge-ko{background:var(--ko-soft);color:var(--ko)}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px;border:1px solid}
.alert-ok{background:var(--ok-soft);color:var(--ok);border-color:transparent}
.alert-ko{background:var(--ko-soft);color:var(--ko);border-color:transparent}
.alert ul{margin:0;padding-left:18px}

/* Formulaires */
label{font-weight:600;display:block;margin-bottom:4px}
.field{margin-bottom:14px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=search],select,textarea{
  width:100%;min-height:44px;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);font:inherit}
textarea{min-height:90px;resize:vertical}
input:focus,select:focus,textarea:focus,.btn:focus-visible{outline:2px solid var(--primary);outline-offset:1px}
.check{display:flex;align-items:center;gap:8px;font-weight:400}
.check input{width:18px;height:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{position:relative}
.chip input{position:absolute;opacity:0}
.chip span{display:inline-block;padding:9px 14px;border:1px solid var(--border);border-radius:999px;cursor:pointer;font-weight:600;background:var(--surface);min-height:42px}
.chip input:checked+span{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}
.chip input:focus-visible+span{outline:2px solid var(--primary)}
.chip input:disabled+span{opacity:.4;cursor:not-allowed}
.row{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}

/* Question */
.q-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.progress{height:8px;background:var(--surface-2);border-radius:99px;overflow:hidden;margin-bottom:14px}
.progress>div{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent))}
.statement{font-size:1.15rem;font-weight:600;margin:6px 0 14px}
.q-image{display:block;margin:0 auto 14px;border-radius:10px;max-height:340px}
img.q-image[src$=".svg"]{width:min(100%,260px);height:auto;max-height:none;border-radius:0}
.answers{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.answer{display:flex;gap:12px;align-items:flex-start;padding:13px 14px;border:2px solid var(--border);border-radius:12px;cursor:pointer;font-weight:500;background:var(--surface)}
.answer input{width:22px;height:22px;margin:1px 0 0;flex:none}
.answer:has(input:checked){border-color:var(--primary);background:var(--primary-soft)}
.answer .letter{font-weight:800;min-width:1.2em}
.answer.is-correct{border-color:var(--ok);background:var(--ok-soft)}
.answer.is-wrong{border-color:var(--ko);background:var(--ko-soft)}
.answer.locked{cursor:default}
.feedback{padding:14px;border-radius:12px;margin-bottom:14px}
.feedback.ok{background:var(--ok-soft)}
.feedback.ko{background:var(--ko-soft)}
.timer{font-variant-numeric:tabular-nums;font-weight:700}
.timer.low{color:var(--ko)}
.sticky-actions{position:sticky;bottom:0;background:var(--surface);padding:10px 0;display:flex;gap:10px;flex-wrap:wrap}
.sticky-actions .btn-primary{flex:1 1 200px}

/* Résultats */
.score{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.score-big{font-size:2.6rem;font-weight:800;line-height:1}
.verdict{font-size:1.2rem;font-weight:700;padding:10px 16px;border-radius:12px}
.verdict.ok{background:var(--ok-soft);color:var(--ok)}
.verdict.ko{background:var(--ko-soft);color:var(--ko)}
.bar{display:grid;grid-template-columns:minmax(120px,1.4fr) 3fr auto;gap:10px;align-items:center;margin-bottom:8px}
.bar .track{height:12px;background:var(--surface-2);border-radius:99px;overflow:hidden}
.bar .fill{height:100%;background:var(--ok)}
.bar .fill.mid{background:var(--warn)}
.bar .fill.low{background:var(--ko)}
@media (max-width:520px){.bar{grid-template-columns:1fr auto}.bar .track{grid-column:1/-1;order:3}}
details.review{border:1px solid var(--border);border-radius:10px;padding:10px 14px;margin-bottom:8px;background:var(--surface)}
details.review summary{cursor:pointer;display:flex;gap:8px;align-items:baseline}
.stats{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px}
.stat b{display:block;font-size:1.6rem}
.chart{display:flex;align-items:flex-end;gap:4px;height:160px;padding:8px 0;border-bottom:1px solid var(--border);overflow-x:auto}
.chart .col{flex:1 0 14px;max-width:34px;background:var(--primary);border-radius:4px 4px 0 0;position:relative}
.chart .col.pass{background:var(--ok)}

/* Tableaux */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--border);vertical-align:top}
th{font-size:.82rem;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
@media (max-width:640px){
  table.responsive thead{display:none}
  table.responsive tr{display:block;border:1px solid var(--border);border-radius:10px;margin-bottom:10px;padding:6px 10px;background:var(--surface)}
  table.responsive td{display:flex;justify-content:space-between;gap:12px;border:0;padding:5px 0}
  table.responsive td::before{content:attr(data-label);font-weight:600;color:var(--muted)}
}
.pagination{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.pagination a,.pagination span{padding:6px 12px;border:1px solid var(--border);border-radius:8px;text-decoration:none}
.pagination .current{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}
.answer-row{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:center;margin-bottom:8px}

/* Favoris et signalements */
.q-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-start;margin:-4px 0 14px}
.q-tools .report{flex:1 1 260px}
.q-tools .report>summary{list-style:none;display:inline-flex}
.q-tools .report>summary::-webkit-details-marker{display:none}
.fav-toggle.is-fav{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 18%,var(--surface))}
.fav-toggle span:first-child{color:var(--accent);font-size:1.1em}

/* Fiches de cours */
.lesson h2{font-size:1.15rem;margin:1.2em 0 .5em;padding-bottom:4px;border-bottom:2px solid var(--accent)}
.lesson h2:first-child{margin-top:0}
.lesson ul,.lesson ol{padding-left:1.3em}
.lesson li{margin:.25em 0}
.lesson table{margin:.5em 0 1em;display:block;overflow-x:auto}
.lesson strong{color:var(--text)}
.lesson-link{display:inline-flex;gap:6px;align-items:center;font-size:.9rem;margin-top:6px}

/* Préparation */
.readiness-main{display:flex;gap:16px;align-items:center}
.gauge{--c:var(--ko);flex:none;width:76px;height:76px;border-radius:50%;display:grid;place-items:center;
  background:conic-gradient(var(--c) calc(var(--p)*1%),var(--surface-2) 0)}
.gauge span{width:58px;height:58px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-weight:800;font-size:.95rem}
.gauge.ok{--c:var(--ok)}.gauge.mid{--c:var(--warn)}
.weak{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding:6px 0;border-top:1px solid var(--border)}
.tts{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:-6px 0 12px}
.tts[hidden]{display:none}

/* Objectif, série de jours, badges */
.goal-row{display:flex;gap:18px;align-items:center}
.streak{display:flex;flex-direction:column;align-items:center;min-width:72px;padding:8px 12px;border-radius:12px;background:color-mix(in srgb,var(--accent) 16%,var(--surface))}
.streak-n{font-size:1.7rem;font-weight:800;line-height:1}
.badges{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));margin-top:8px}
.badge-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:2px;padding:12px 8px;border:1px dashed var(--border);border-radius:12px;opacity:.55;filter:grayscale(1)}
.badge-card.earned{opacity:1;filter:none;border-style:solid;border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--surface))}
.badge-icon{font-size:1.8rem}
.badge-unlock{border-color:var(--accent)}
.group-code{font-size:1.4rem;letter-spacing:.12em;padding:2px 10px;border-radius:8px;background:var(--surface-2)}