/* © 2026 Lubansu Alphonse. Tous droits réservés. QCM Grader / QCM Taker — logiciel propriétaire. Voir LICENSE. */
/* QCM Taker — app de réponse, mobile-first, identité cyan */
:root{
  --tk-bg:#06202b; --tk-bg2:#082b3a; --tk-card:#0c2f3f; --tk-line:rgba(120,200,220,.18);
  --tk-cyan:#38d6e6; --tk-cyan2:#1fb6d6; --tk-ink:#eaf7fb; --tk-muted:#9fc0cc;
  --tk-ok:#3ad48a; --tk-err:#ff6b6b;
  --tk-sans:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--tk-sans);color:var(--tk-ink);
  background:radial-gradient(circle at 50% 0%,rgba(45,184,232,.16),transparent 40%),
             linear-gradient(160deg,#03121b,#06202b 60%,#082b3a);
  min-height:100vh;-webkit-font-smoothing:antialiased}
.hide{display:none !important}
.tk-shell{max-width:640px;margin:0 auto;padding:0 16px 40px;min-height:100vh}

.tk-top{display:flex;align-items:center;justify-content:space-between;padding:18px 4px}
.tk-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.tk-logo{width:38px;height:38px;border-radius:10px;border:1px solid rgba(56,214,230,.7);
  display:grid;place-items:center;overflow:hidden;font-weight:900;color:var(--tk-cyan);font-size:13px}
.tk-logo img{width:100%;height:100%;object-fit:cover}
.tk-brand b{display:block;font-size:16px;letter-spacing:-.02em}
.tk-brand small{display:block;font-size:10px;color:var(--tk-cyan)}
.tk-timer{background:rgba(255,107,107,.12);border:1px solid rgba(255,107,107,.4);
  color:#ffb4b4;border-radius:999px;padding:6px 14px;font-weight:800;font-size:13px}

.tk-view{padding-top:8px}
.tk-card{background:var(--tk-card);border:1px solid var(--tk-line);border-radius:20px;
  padding:26px 22px;box-shadow:0 18px 50px rgba(0,0,0,.3)}
.tk-card h1{font-size:24px;letter-spacing:-.03em;margin:0 0 8px}
.tk-muted{color:var(--tk-muted);font-size:14px;line-height:1.6}
.tk-center{text-align:center}
.tk-exam-name{display:inline-block;background:rgba(56,214,230,.1);border:1px solid rgba(56,214,230,.3);
  color:var(--tk-cyan);border-radius:999px;padding:6px 14px;font-size:12px;font-weight:800;margin-bottom:14px}

.tk-label{display:block;font-size:13px;font-weight:700;color:var(--tk-ink);margin:16px 0 6px}
.tk-input{width:100%;padding:14px 16px;border-radius:12px;border:1px solid var(--tk-line);
  background:rgba(255,255,255,.04);color:var(--tk-ink);font-size:16px;font-family:inherit;outline:none}
.tk-input:focus{border-color:var(--tk-cyan);background:rgba(56,214,230,.06)}
.tk-code-input{text-transform:uppercase;letter-spacing:.3em;text-align:center;font-size:26px;font-weight:800}

.tk-btn{width:100%;padding:16px;border-radius:14px;border:none;font-size:16px;font-weight:800;
  font-family:inherit;cursor:pointer;margin-top:22px;transition:.15s}
.tk-btn-primary{background:linear-gradient(135deg,var(--tk-cyan),var(--tk-cyan2));color:#04202a;
  box-shadow:0 12px 28px rgba(56,214,230,.24)}
.tk-btn-primary:active{transform:translateY(1px)}
.tk-btn-ghost{background:rgba(255,255,255,.05);color:var(--tk-ink);border:1px solid var(--tk-line)}
.tk-err{margin-top:14px;background:rgba(255,107,107,.12);border:1px solid rgba(255,107,107,.4);
  color:#ffb4b4;border-radius:12px;padding:12px 14px;font-size:14px}

/* Questionnaire */
.tk-quiz-head{position:sticky;top:0;background:linear-gradient(180deg,#06202b,rgba(6,32,43,.85));
  padding:12px 0 10px;z-index:5;backdrop-filter:blur(6px)}
.tk-progress{height:8px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.tk-progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--tk-cyan),var(--tk-cyan2));transition:width .3s}
.tk-progress-txt{font-size:12px;color:var(--tk-muted);margin-top:6px;font-weight:600}

.tk-q{background:var(--tk-card);border:1px solid var(--tk-line);border-radius:18px;
  padding:20px 18px;margin-bottom:16px}
.tk-q-num{font-size:12px;font-weight:800;color:var(--tk-cyan);letter-spacing:.06em}
.tk-q-type{font-size:11px;color:var(--tk-muted);font-weight:600;float:right}
.tk-q-stem{font-size:17px;font-weight:700;line-height:1.4;margin:8px 0 14px}
.tk-q-img{max-width:100%;border-radius:12px;border:1px solid var(--tk-line);margin:0 0 14px;display:block}

.tk-opt{display:flex;align-items:flex-start;gap:12px;padding:14px 14px;border-radius:12px;
  border:1px solid var(--tk-line);background:rgba(255,255,255,.03);margin-bottom:10px;cursor:pointer;
  transition:.12s;user-select:none}
.tk-opt:active{transform:scale(.995)}
.tk-opt.sel{border-color:var(--tk-cyan);background:rgba(56,214,230,.12)}
.tk-opt .box{width:26px;height:26px;flex:0 0 auto;border-radius:7px;border:2px solid var(--tk-line);
  display:grid;place-items:center;font-weight:900;color:#04202a;background:transparent;transition:.12s}
.tk-opt.sel .box{background:var(--tk-cyan);border-color:var(--tk-cyan)}
.tk-opt .box.radio{border-radius:50%}
.tk-opt .lettre{font-weight:800;color:var(--tk-cyan);margin-right:2px}
.tk-opt .txt{font-size:15px;line-height:1.45;padding-top:2px}

.tk-quiz-foot{margin-top:8px;padding-bottom:20px}

/* Résultat */
.tk-score-ring{width:150px;height:150px;margin:10px auto 18px;position:relative}
.tk-score-ring svg{transform:rotate(-90deg)}
.tk-score-val{position:absolute;inset:0;display:grid;place-items:center;font-size:34px;font-weight:900}
.tk-score-val small{font-size:16px;color:var(--tk-muted)}
.tk-stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:18px}
.tk-stat{background:rgba(255,255,255,.04);border:1px solid var(--tk-line);border-radius:14px;padding:14px}
.tk-stat b{display:block;font-size:22px;letter-spacing:-.02em}
.tk-stat span{font-size:12px;color:var(--tk-muted)}
.tk-badge-wait{background:rgba(56,214,230,.1);border:1px solid rgba(56,214,230,.3);color:var(--tk-cyan);
  border-radius:14px;padding:18px;font-size:15px;line-height:1.6;margin-top:10px}

@media(min-width:560px){.tk-card h1{font-size:28px}}