.choice-btn{text-align:left;display:flex;align-items:flex-start;justify-content:flex-start;gap:0;padding:15px;margin-bottom:10px;border:2px solid #dee2e6;transition:all 0.3s;background-color:var(--bs-body-bg,#fff);color:var(--bs-body-color,#212529);cursor:default}.choice-btn strong{flex-shrink:0}.choice-btn .choice-text-content{flex:1;text-align:left;word-break:break-word}.choice-btn.correct.revealed{border-color:#28a745;background-color:#d4edda}.answer-badge{display:none}.answer-badge.revealed{display:inline}.selected-badge{display:none}.choice-btn.selected{border-color:#0d6efd;border-width:2px;background-color:#e7f1ff}.choice-btn.wrong{border-color:#dc3545;border-width:2px;background-color:#f8d7da}[data-bs-theme="dark"] .choice-btn{background-color:#1a1d20;color:#e9ecef;border-color:#3a3f44}[data-bs-theme="dark"] .choice-btn.correct.revealed{background-color:#1e4620;border-color:#28a745}[data-bs-theme="dark"] .choice-btn.selected{border-color:#0d6efd;background-color:#1a2942}[data-bs-theme="dark"] .choice-btn.wrong{border-color:#dc3545;background-color:#3d1a1e}.badge.bg-light{color:#212529}[data-bs-theme="dark"] .badge.bg-light{background-color:#495057!important;color:#f8f9fa}.explanation-entry{border:1px solid rgba(0,0,0,0.08);border-radius:0.75rem;padding:1rem;margin-bottom:0.75rem;background-color:var(--card-bg,#fff);box-shadow:0 1px 3px rgba(0,0,0,0.08);transition:border-color 0.2s}.explanation-entry:hover{border-color:rgba(13,110,253,0.5)}.explanation-entry-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:0.5rem}.explanation-entry-header>div{min-width:0}.explanation-author-id{font-size:0.85rem;text-transform:uppercase}.explanation-source-badge{font-size:0.65rem;padding:0.2rem 0.35rem}.explanation-author-name{font-weight:600;display:block;white-space:normal;word-break:break-word}.explanation-author-meta{font-size:0.85rem;color:var(--bs-body-color,#6c757d)}.explanation-entry-actions{flex-wrap:wrap;gap:0.5rem}.explanation-entry-actions button{line-height:1}[data-bs-theme="dark"] .explanation-entry,[data-theme="dark"] .explanation-entry{background-color:#1e1f22!important;border-color:#494f55!important;box-shadow:none!important}[data-theme="paper"] .explanation-entry{background-color:#fffcf2!important;border-color:#d4a373!important;box-shadow:2px 2px 0px rgba(212,163,115,0.2)!important}[data-theme="paper"] .explanation-author-meta,[data-theme="paper"] .explanation-author-id{color:#bc6c25!important}[data-theme="midnight"] .explanation-entry{background-color:#121212!important;border-color:#333!important;box-shadow:none!important}[data-theme="midnight"] .explanation-entry:hover{border-color:#7c4dff!important}[data-theme="midnight"] .explanation-author-meta,[data-theme="midnight"] .explanation-author-id{color:#aaaaaa!important}[data-theme="nord"] .explanation-entry{background-color:#3B4252!important;border-color:#4C566A!important;box-shadow:none!important}[data-theme="nord"] .explanation-entry:hover{border-color:#88C0D0!important}[data-theme="nord"] .explanation-author-meta,[data-theme="nord"] .explanation-author-id{color:#D8DEE9!important;opacity:0.8}[data-theme="blossom"] .explanation-entry{background-color:#ffffff!important;border-color:#fce4e8!important;box-shadow:0 4px 15px rgba(255,182,193,0.08)!important}[data-theme="blossom"] .explanation-entry:hover{border-color:#ff8fa3!important}[data-theme="blossom"] .explanation-author-meta,[data-theme="blossom"] .explanation-author-id{color:#8e6d75!important}.markdown-body img{max-width:100%;height:auto}.badge-exam-date{background-color:rgba(255,255,255,0.25);color:white;font-size:0.8em}.question-image{cursor:zoom-in;transition:transform 0.2s}.question-image.zoomed{cursor:zoom-out;transform:scale(1.5);z-index:1000;position:relative}.choice-image{cursor:zoom-in;transition:transform 0.2s}.choice-image.zoomed{cursor:zoom-out;transform:scale(2);z-index:1000;position:relative}.blur-wrap{position:relative}.blur-content.blurred{filter:blur(6px);-webkit-user-select:none;user-select:none;pointer-events:none}.blur-overlay{position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;text-align:center;padding:16px;background:rgba(255,255,255,0.85);color:#212529;font-weight:700;border:2px dashed #adb5bd;border-radius:8px}[data-bs-theme="dark"] .blur-overlay{background:rgba(0,0,0,0.65);color:#f8f9fa;border-color:#6c757d}.blur-content{position:relative;z-index:1}.blur-status-badge .blur-text{margin-left:0.2rem}@media (max-width:767.98px){.blur-status-badge .blur-text{display:none}}.quiz-mode-btn{max-width:220px}.bookmark-icon{visibility:visible;opacity:1}.success-icon-lg{font-size:4rem;color:#28a745}@media (max-width:767.98px){.quiz-mode-btn{max-width:none}.mobile-toolbar-btn{min-height:38px!important;height:38px!important;padding:0 10px!important;line-height:36px!important;display:inline-flex!important;align-items:center;justify-content:center;font-size:0.85rem!important;white-space:nowrap!important}.mobile-scroll-row{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.mobile-scroll-row::-webkit-scrollbar{display:none}}