*{box-sizing:border-box;margin:0;padding:0}:root{--primary:#6c63ff;--primary-dark:#574fd6;--bg:#f0f2ff;--card:#fff;--text:#1a1a2e;--muted:#6b7280;--danger:#ef4444;--success:#22c55e;--warning:#f59e0b;--radius:16px;--shadow:0 4px 20px #6c63ff1f}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Segoe UI,system-ui,sans-serif}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,textarea{outline:none;font-family:inherit}.screen{max-width:480px;min-height:100vh;margin:0 auto;padding:24px 16px}.screen-header{align-items:center;gap:12px;margin-bottom:28px;display:flex}.back-btn{background:var(--card);width:40px;height:40px;box-shadow:var(--shadow);cursor:pointer;border:none;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;font-size:20px;display:flex}.screen-title{color:var(--text);font-size:22px;font-weight:700}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:12px;padding:20px}.btn{cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:14px 24px;font-size:15px;font-weight:600;transition:all .15s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff}.btn-primary:active{background:var(--primary-dark)}.btn-secondary{color:var(--primary);background:#ede9fe}.btn-danger{color:var(--danger);background:#fee2e2}.btn-success{color:#16a34a;background:#dcfce7}.btn-full{width:100%}.input-field{width:100%;color:var(--text);background:#fff;border:2px solid #e5e7eb;border-radius:12px;margin-bottom:12px;padding:14px 16px;font-size:15px;transition:border-color .15s}.input-field:focus{border-color:var(--primary)}textarea.input-field{resize:vertical;min-height:80px}.badge{border-radius:20px;align-items:center;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.badge-purple{color:var(--primary);background:#ede9fe}.badge-green{color:#16a34a;background:#dcfce7}.badge-orange{color:#ea580c;background:#fff7ed}.badge-red{color:var(--danger);background:#fee2e2}.box-1{color:#991b1b;background:#fee2e2}.box-2{color:#9a3412;background:#fff7ed}.box-3{color:#713f12;background:#fefce8}.box-4{color:#14532d;background:#dcfce7}.box-5{color:#1e3a8a;background:#dbeafe}.pin-display{justify-content:center;gap:12px;margin:20px 0;display:flex}.pin-dot{border:2px solid var(--primary);border-radius:50%;width:14px;height:14px;transition:background .15s}.pin-dot.filled{background:var(--primary)}.pin-keypad{grid-template-columns:repeat(3,1fr);gap:12px;max-width:280px;margin:0 auto;display:grid}.pin-key{aspect-ratio:1;color:var(--text);cursor:pointer;background:#fff;border:none;border-radius:50%;justify-content:center;align-items:center;font-size:22px;font-weight:700;transition:all .1s;display:flex;box-shadow:0 2px 8px #0000001f}.pin-key:active{background:var(--primary);color:#fff;transform:scale(.92)}.pin-key.empty{box-shadow:none;background:0 0}.pin-key.del{color:var(--danger);font-size:18px}.toast{background:var(--text);color:#fff;z-index:1000;border-radius:24px;padding:12px 24px;font-size:14px;font-weight:500;animation:.3s fadeup;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}@keyframes fadeup{0%{opacity:0;transform:translate(-50%)translateY(12px)}to{opacity:1;transform:translate(-50%)translateY(0)}}.avatar{cursor:pointer;flex-direction:column;align-items:center;gap:8px;display:flex}.avatar-circle{border:3px solid #0000;border-radius:50%;justify-content:center;align-items:center;width:72px;height:72px;font-size:32px;transition:all .15s;display:flex}.avatar-name{text-align:center;color:var(--text);font-size:13px;font-weight:600}.boites-row{gap:8px;margin-top:12px;display:flex}.boite-chip{text-align:center;border-radius:8px;flex:1;padding:6px 4px;font-size:11px;font-weight:700}.progress-bar{background:#e5e7eb;border-radius:4px;height:8px;margin-top:8px;overflow:hidden}.progress-fill{background:var(--primary);border-radius:4px;height:100%;transition:width .3s}.exercise-card{box-shadow:var(--shadow);background:#fff;border-radius:20px;margin-bottom:20px;padding:28px}.exercise-question{margin-bottom:8px;font-size:20px;font-weight:600;line-height:1.4}.exercise-subject{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:20px;font-size:12px}.answer-reveal{background:#f0fdf4;border:2px solid #bbf7d0;border-radius:12px;margin-top:16px;padding:16px}.answer-reveal-label{text-transform:uppercase;color:#16a34a;margin-bottom:6px;font-size:11px;font-weight:700}.answer-reveal-text{color:#15803d;font-size:16px;font-weight:600}.tab-bar{box-shadow:var(--shadow);background:#fff;border-radius:16px;margin-bottom:20px;padding:4px;display:flex}.tab-item{text-align:center;color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:12px;flex:1;padding:10px;font-size:13px;font-weight:600;transition:all .15s}.tab-item.active{background:var(--primary);color:#fff}.env-card{box-shadow:var(--shadow);cursor:pointer;background:#fff;border-radius:16px;justify-content:space-between;align-items:center;margin-bottom:10px;padding:16px 20px;transition:transform .1s;display:flex}.env-card:active{transform:scale(.98)}.due-badge{background:var(--primary);color:#fff;border-radius:20px;padding:4px 12px;font-size:13px;font-weight:700}.due-badge.zero{color:var(--muted);background:#e5e7eb}.modal-overlay{z-index:100;background:#00000080;justify-content:center;align-items:flex-end;padding:16px;display:flex;position:fixed;inset:0}.modal{background:#fff;border-radius:24px 24px 16px 16px;width:100%;max-width:480px;max-height:90vh;padding:24px;overflow-y:auto}.modal-title{margin-bottom:20px;font-size:18px;font-weight:700}