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var(--border);border-radius:18px;padding:16px}.stat-value{font-size:clamp(1.5rem,3vw,2.6rem);font-weight:900;line-height:1;margin-bottom:8px}.stat-label{color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.76rem}.stage{min-height:280px;display:grid;place-items:center;text-align:center;border-radius:24px;border:1px solid var(--border);background:linear-gradient(180deg,#fff,#f9f4ea);padding:24px}.big-name{font-size:clamp(2.2rem,6vw,5rem);font-weight:900;letter-spacing:-.04em;line-height:1;color:var(--accent);word-break:break-word}.big-question{font-size:clamp(1.6rem,3.2vw,3rem);font-weight:800;line-height:1.2;word-break:break-word}.answer{font-size:clamp(1.5rem,3vw,2.7rem);font-weight:800;color:var(--success);line-height:1.2;word-break:break-word}.answer-timer{margin-top:16px;font-size:2rem;font-weight:900;color:var(--accent)}.pulse{animation:pulse 1.2s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.03);opacity:.85}}@keyframes alert-pulse{0%,to{transform:translateY(0) scale(1);box-shadow:0 0 0 3px #d11b1b29,0 10px 22px #d11b1b38}50%{transform:translateY(-1px) scale(1.03);box-shadow:0 0 0 6px #d11b1b3d,0 14px 28px #d11b1b4d}}.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}.list{display:grid;gap:12px;max-height:460px;overflow:auto;padding-right:2px}.row{display:grid;grid-template-columns:28px 1fr auto;gap:16px;align-items:start;padding:16px;border:1px solid var(--border);border-radius:16px;background:#fff}.row input{width:20px;height:20px;margin-top:2px}.row strong{display:block;margin-bottom:4px}.question-answer{display:inline-block;width:fit-content;filter:blur(8px);opacity:.72;transition:filter .18s ease,opacity .18s ease}.question-answer:hover,.question-answer:focus{filter:blur(0);opacity:1}.difficulty{border-radius:999px;padding:6px 10px;font-size:.78rem;font-weight:900;text-transform:uppercase;letter-spacing:.08em;white-space:nowrap}.d-facile{background:#e8f5e9;color:#1a7f37}.d-moyen{background:#fff4db;color:#ad5a00}.d-difficile{background:#ffe4e6;color:#b42318}.student-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;max-height:460px;overflow:auto;padding:8px 2px 2px}.student-card{border:1px solid var(--border);border-radius:18px;background:linear-gradient(180deg,#fff,#fcfaf4);padding:14px 16px;display:flex;align-items:center;gap:12px;box-shadow:0 8px 18px #1b1a170a;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease;min-height:64px}.student-card:hover{transform:translateY(-1px);box-shadow:0 10px 24px #1b1a1712}.student-card.available{background:linear-gradient(180deg,#f3fbf5,#eaf7ee);border-color:#cde9d2}.student-card.absent{background:linear-gradient(180deg,#fff7f7,#fff0f0);border-color:#f3cccc;opacity:.9}.student-card input{width:20px;height:20px}.student-card .name{flex:1;font-weight:700;line-height:1.2}.student-card input:focus-visible{outline:3px solid rgba(23,50,77,.18);outline-offset:2px;border-radius:4px}.presence-header{display:grid;gap:18px;padding:18px;margin-bottom:18px;border:1px solid rgba(217,210,195,.8);border-radius:20px;background:linear-gradient(180deg,#fffdf8,#fbf6ec)}.presence-title-row{margin-bottom:0}.presence-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.presence-pill{border:1px solid var(--border);border-radius:18px;padding:16px 18px;background:#fff;min-height:88px;display:flex;flex-direction:column;justify-content:center}.presence-pill .label{display:block;font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:6px;font-weight:800}.presence-pill .value{font-size:1.6rem;font-weight:900;line-height:1}.value.available{color:var(--success)}.value.taken{color:#ad5a00}.value.absent{color:var(--danger)}.presence-actions-panel{border-top:1px solid rgba(217,210,195,.75);padding-top:18px}.presence-actions{display:flex;flex-wrap:wrap;gap:14px}.presence-actions .btn{padding:14px 20px;min-width:180px}.presence-panel .student-grid{margin-top:0}.error{background:#fff1f0;color:var(--danger);border:1px solid #ffccc7;border-radius:16px;padding:14px 16px;font-weight:700}.info-line{color:var(--muted);font-size:.95rem;line-height:1.5}.footer-note{margin-top:10px;color:var(--muted);font-size:.9rem}.setup-screen.hidden,.session-screen.hidden{display:none!important}.session-screen{display:none;margin-top:18px}.session-screen.active{display:block}.session-focus{min-height:78vh;display:grid;place-items:center;text-align:center;border:1px solid var(--border);border-radius:24px;background:linear-gradient(180deg,#fff,#f9f4ea);padding:48px 32px}.session-stack{display:grid;justify-items:center;gap:28px;max-width:1100px}.big-name{font-size:clamp(2.6rem,7vw,5.6rem);font-weight:900;letter-spacing:.08em;line-height:1;color:var(--accent);word-break:break-word;text-transform:uppercase}.big-question{font-size:clamp(2.1rem,4.2vw,4rem);font-weight:900;line-height:1.15;word-break:break-word;max-width:min(28ch,100%)}.answer{font-size:clamp(2.6rem,5.5vw,6.2rem);font-weight:900;color:var(--success);line-height:1.08;word-break:break-word;max-width:min(34ch,100%)}.big-question .katex,.answer .katex,.question-answer .katex{font-size:inherit}.big-question .katex-display,.big-question .katex-html,.answer .katex-display,.question-answer .katex-display{margin:.2em 0}.answer .katex,.question-answer .katex{max-width:100%}.session-only-actions{justify-content:center;margin-top:16px}.session-main-btn{min-width:min(760px,100%);padding:20px 28px;font-size:1.2rem;border-radius:22px}.full-width{width:100%}@media(max-width:980px){.hero{grid-template-columns:1fr}body{padding:12px}main{padding:14px}header{padding:22px 18px 14px}.grid-stats,.presence-summary{grid-template-columns:1fr}.presence-actions .btn{min-width:100%}.session-focus{min-height:60vh}.session-stack{gap:22px}.app{width:100%}}