.truth-table-grid .fiche-revision{padding:12px;margin:0;text-align:center}.truth-table-grid .fiche-revision h4{margin-top:0;margin-bottom:8px}.truth-table-grid .probability-table{margin:0 auto}.exercise-card{background:var(--light, #fff);border-radius:12px;margin-bottom:28px;box-shadow:0 4px 16px #00000014;overflow:hidden;border:1px solid var(--light-gray, #e9ecef)}.ex-header{background:linear-gradient(135deg,var(--primary, #005D68) 0%,var(--primary-dark, #1a5276) 100%);color:#fff;padding:14px 22px;display:flex;justify-content:space-between;align-items:center;gap:12px}.ex-header h4{margin:0;font-size:1.1rem;display:flex;align-items:center;gap:8px}.ex-body{padding:22px}.reveal-btn{background:var(--primary, #005D68);color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-weight:600;margin-top:14px;display:inline-block;transition:background .3s,transform .2s}.reveal-btn:hover{background:var(--primary-dark, #1a5276);transform:translateY(-1px)}.correction{margin-top:18px;padding:20px 22px;background:#f0faf0;border-left:4px solid #28a745;border-radius:0 10px 10px 0;animation:slideDown .4s ease}.correction.hidden{display:none}.correction h5{color:#28a745;margin-bottom:10px;font-size:1rem}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.qcm-option:hover{border-color:var(--primary, #005D68)!important;background:#005d680f!important}.qcm-option:active{transform:scale(.98)}[data-theme=dark] .correction{background:#28a7451a;border-left-color:#2ecc71}[data-theme=dark] .exercise-card{background:var(--light, #1f2937);border-color:#ffffff14}[data-theme=dark] .qcm-option:hover{background:#005d6826!important}@media (max-width: 768px){.truth-table-grid{grid-template-columns:1fr 1fr!important}.ex-header{flex-direction:column;align-items:flex-start;gap:6px}.ex-body{padding:16px}}@media (max-width: 480px){.truth-table-grid{grid-template-columns:1fr!important}.correction{padding:14px}}