[data-theme=light]{--bg-body: #f2f2f2;--text-primary: #333;--text-secondary: #54595f;--text-muted: #424242;--bg-panel: #fff;--bg-input: #fff;--bg-input-disabled: #eee;--text-input-disabled: #999;--border-color: #ccc;--border-light: #e0e0e0;--border-section: #eee;--shadow: rgba(0,0,0,.08);--bg-option: #fafafa;--bg-option-hover: #fce4ec;--bg-option-selected: #fce4ec;--bg-nav-btn: #ebebeb;--bg-topbar: #333;--bg-bottombar: #f2f2f2;--border-bottombar: #ddd;--bg-banner: #1e2a38;--bg-explanation: #e8f5e9;--border-explanation: #c8e6c9;--text-explanation: #424242;--bg-modal: #fff;--text-modal: #333;--bg-table-header: #333;--text-table-header: #fff;--bg-table-row-hover: #f5f5f5;--option-expl-color: #546e7a;--option-expl-border: rgba(0,0,0,.1);--bg-option-correct: #e8f5e9;--bg-option-incorrect: #ffebee;--text-correct-expl: #2e7d32;--text-incorrect-expl: #b71c1c;--value-secondary: #54595f;--correct-green: #388E3C;--fail-red: #d32f2f}[data-theme=dark]{--bg-body: #1a1a2e;--text-primary: #e0e0e0;--text-secondary: #a0a8b4;--text-muted: #b0b8c4;--bg-panel: #22223b;--bg-input: #2a2a4a;--bg-input-disabled: #1e1e3a;--text-input-disabled: #666;--border-color: #444;--border-light: #333;--border-section: #333;--shadow: rgba(0,0,0,.3);--bg-option: #2a2a4a;--bg-option-hover: #3a2040;--bg-option-selected: #3a2040;--bg-nav-btn: #2a2a4a;--bg-topbar: #16162b;--bg-bottombar: #1a1a2e;--border-bottombar: #333;--bg-banner: #16162b;--bg-explanation: #1a3a2a;--border-explanation: #2a5a3a;--text-explanation: #c0d0c8;--bg-modal: #22223b;--text-modal: #e0e0e0;--bg-table-header: #16162b;--text-table-header: #e0e0e0;--bg-table-row-hover: #2a2a4a;--option-expl-color: #90a4ae;--option-expl-border: rgba(255,255,255,.1);--bg-option-correct: #1a3a2a;--bg-option-incorrect: #3a1a1a;--text-correct-expl: #66bb6a;--text-incorrect-expl: #ef9a9a;--value-secondary: #a0a8b4;--correct-green: #66bb6a;--fail-red: #ef5350}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;background:var(--bg-body);color:var(--text-primary);min-height:100vh}[data-theme]{background:var(--bg-body);min-height:100vh;color:var(--text-primary)}.btn-theme-toggle{background:none;border:none;cursor:pointer;font-size:1rem;padding:4px 8px;border-radius:4px;transition:background .15s;line-height:1;color:var(--text-primary);display:flex;align-items:center;gap:4px}.btn-theme-toggle:hover{background:#80808033}.version-row-actions{display:flex;align-items:center;gap:8px}.btn-logout{background:none;border:1px solid var(--border-color);cursor:pointer;font-size:.82rem;padding:4px 10px;border-radius:4px;color:var(--text-secondary);transition:background .15s,color .15s}.btn-logout:hover{background:#ffebee;color:var(--fail-red);border-color:var(--fail-red)}.course-select-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-body);padding:20px}.course-select-box{background:var(--bg-panel);border-radius:6px;box-shadow:0 4px 24px var(--shadow);width:100%;max-width:480px;overflow:hidden}.course-select-header{display:flex;align-items:center;justify-content:space-between;padding:20px 32px 0}.course-select-title{font-size:1.2rem;color:var(--text-primary);margin:0}.course-select-status{text-align:center;color:var(--text-secondary);font-size:.9rem;padding:24px 32px;margin:0}.course-select-error{text-align:center;color:var(--fail-red);font-size:.9rem;padding:12px 32px;margin:0}.course-list{display:flex;flex-direction:column;gap:10px;padding:20px 32px 32px}.course-card{display:flex;align-items:center;justify-content:space-between;background:var(--bg-option);border:1px solid var(--border-color);border-radius:6px;padding:16px 20px;cursor:pointer;font-size:1rem;color:var(--text-primary);text-align:left;transition:background .15s,border-color .15s}.course-card:hover:not(:disabled){background:var(--bg-option-hover);border-color:#c36}.course-card:disabled{opacity:.6;cursor:not-allowed}.course-card--loading{border-color:#c36}.course-card-name{font-weight:600}.course-card-spinner{font-size:.8rem;color:var(--text-secondary)}.topbar-theme{font-size:.85rem;color:#fff}.toggle-switch{display:inline-block;width:36px;height:20px;background:#b0b8c4;border-radius:10px;position:relative;transition:background .25s;flex-shrink:0}.toggle-switch .toggle-knob{position:absolute;top:2px;left:2px;width:16px;height:16px;background:#fff;border-radius:50%;transition:transform .25s;box-shadow:0 1px 3px #0003}.toggle-switch .toggle-knob.on{transform:translate(16px)}[data-theme=dark] .toggle-switch{background:#c36}.toggle-sm{width:28px;height:16px}.toggle-sm .toggle-knob{width:12px;height:12px}.toggle-sm .toggle-knob.on{transform:translate(12px)}.screen-top-actions{display:flex;justify-content:flex-end;margin-bottom:8px}.start-screen{max-width:800px;margin:0 auto;padding:40px 20px;text-align:center}.start-logo-banner{background:var(--bg-banner);border-radius:6px;padding:32px 48px;margin-bottom:4px;text-align:left}.start-logo{width:220px;display:block}.version-row{display:flex;justify-content:space-between;align-items:center;margin-top:4px;margin-bottom:12px}.version-info{font-size:.75rem;color:#89a;white-space:nowrap}.version-number{opacity:.6}.start-screen h1{font-size:2rem;color:#c36;margin-bottom:4px}.start-screen .subtitle{font-size:1rem;color:var(--text-secondary);margin-bottom:36px}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-body);padding:20px}.login-box{background:var(--bg-panel);border-radius:6px;box-shadow:0 4px 24px var(--shadow);padding:0 0 32px;width:100%;max-width:380px;overflow:hidden}.login-logo-banner{background:var(--bg-banner);padding:28px 32px;margin-bottom:28px;text-align:left}.login-logo{width:180px;display:block}.login-title{font-size:1.3rem;color:var(--text-primary);text-align:center;margin:0 0 24px}.login-form{display:flex;flex-direction:column;gap:16px;padding:0 32px}.login-field{display:flex;flex-direction:column;gap:6px}.login-label{font-size:.85rem;font-weight:600;color:var(--text-secondary)}.login-input{padding:10px 12px;border:1px solid var(--border-color);border-radius:4px;background:var(--bg-input);color:var(--text-primary);font-size:1rem;outline:none;transition:border-color .15s}.login-input:focus{border-color:#c36}.login-input:disabled{background:var(--bg-input-disabled);color:var(--text-input-disabled)}.login-error{font-size:.85rem;color:var(--fail-red);text-align:center;margin:0}.login-btn{margin-top:4px;padding:11px;background:#c36;color:#fff;border:none;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .15s}.login-btn:hover:not(:disabled){background:#a8254d}.login-btn:disabled{background:#e899b8;cursor:not-allowed}.config-panels{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-bottom:32px;align-items:stretch}.config-panel{background:var(--bg-panel);border-radius:3px;padding:24px;text-align:left;box-shadow:2px 2px 5px var(--shadow);min-width:280px;flex:1;max-width:380px;border-top:3px solid #cc3366}.config-panel h3{font-size:.95rem;color:var(--text-primary);margin-bottom:16px;text-transform:uppercase;letter-spacing:.5px}.tabs-container{width:100%;margin-bottom:32px}.tabs-header{display:flex;gap:0;border-bottom:3px solid #cc3366}.tab-btn{padding:12px 28px;font-size:.95rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;cursor:pointer;border:1px solid var(--border-color);border-bottom:none;border-radius:6px 6px 0 0;background:var(--bg-nav-btn);color:var(--text-secondary);transition:background .2s,color .2s;position:relative;bottom:-1px}.tab-btn:hover:not(.tab-active){background:var(--bg-option-hover);color:var(--text-primary)}.tab-btn.tab-active{background:var(--bg-panel);color:#c36;border-color:#c36;border-bottom:3px solid var(--bg-panel);z-index:1}.tab-content{background:var(--bg-panel);border:1px solid var(--border-color);border-top:none;border-radius:0 0 6px 6px;box-shadow:2px 2px 5px var(--shadow)}.tab-body{padding:24px;animation:tabFadeIn .2s ease}@keyframes tabFadeIn{0%{opacity:0}to{opacity:1}}.mode-config-row{display:flex;gap:32px}.mode-config-left{flex:0 0 auto}.mode-config-right{flex:1;border-left:1px solid var(--border-light);padding-left:32px}@media(max-width:600px){.mode-config-row{flex-direction:column;gap:16px}.mode-config-right{border-left:none;padding-left:0;border-top:1px solid var(--border-light);padding-top:16px}}.radio-group label{display:flex;align-items:center;gap:10px;padding:8px 0;cursor:pointer;font-size:.95rem}.radio-group input[type=radio]{accent-color:#cc3366;width:18px;height:18px}.review-failed-tools{margin-top:12px;padding-top:12px;border-top:1px solid var(--border-light);display:flex;flex-direction:column;gap:10px;align-items:flex-start}.review-failed-count{font-size:.9rem;color:var(--text-secondary)}.review-failed-reset-btn{min-width:190px}.config-row{display:flex;align-items:center;justify-content:space-between;padding:6px 0}.config-row label{font-size:.9rem;color:var(--text-muted)}.config-row input[type=number],.config-row select{width:90px;padding:6px 10px;border:1px solid var(--border-color);border-radius:3px;font-size:.9rem;background:var(--bg-input);color:var(--text-primary)}.tab-body .config-row select,.tab-body .config-row input[type=number]{width:190px;min-width:190px}.config-row input[type=number]:focus,.config-row select:focus{outline:none;border-color:#c36;box-shadow:0 0 0 2px #cc336626}.config-row input:disabled,.config-row select:disabled{background:var(--bg-input-disabled);color:var(--text-input-disabled)}.config-inline-helper-row{justify-content:flex-end;padding-top:0}.config-inline-helper-btn{width:190px}.config-action-row{justify-content:flex-end;padding-top:14px}.review-failed-action-row{justify-content:flex-start;gap:12px}.review-failed-action-row .config-action-btn{margin-left:auto}.config-action-btn{width:190px}.checkbox-row{display:flex;align-items:center;gap:10px;padding:6px 0;cursor:pointer;font-size:.9rem}.checkbox-row input[type=checkbox]{accent-color:#cc3366;width:16px;height:16px}.btn-group{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn{padding:12px 28px;border:1px solid transparent;border-radius:3px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;color:#fff}.btn:hover{opacity:.9;transform:translateY(-1px)}.btn-sm{padding:6px 14px;font-size:.85rem}.btn-primary{background:#c36;border-color:#c36}.btn-primary:hover{background:#b02d5a}.btn-secondary{background:#54595f;border-color:#54595f}.btn-secondary:hover{background:#3d4147}.btn-danger{background:#d32f2f;border-color:#d32f2f}.btn-danger:hover{background:#b71c1c}.btn-success{background:#388e3c;border-color:#388e3c}.btn-success:hover{background:#2e7d32}.btn-success-light{background:#4caf50;border-color:#4caf50}.btn-success-light:hover{background:#43a047}.topbar{background:var(--bg-topbar);color:#fff;display:flex;align-items:center;padding:0 20px;height:56px;gap:16px;flex-shrink:0}.topbar-logo{height:28px;margin-right:4px}.topbar .timer{font-family:JetBrains Mono,monospace;font-size:1.2rem;font-weight:700}.topbar .timer.warning{color:#d32f2f}.topbar .timer.ok{color:#4caf50}.topbar .progress-text{font-size:.9rem;opacity:.9}.topbar .mode-badge{font-weight:700;color:#f78c38;font-size:.9rem}.topbar .spacer{flex:1}.topbar .btn{padding:6px 16px;font-size:.85rem}.exam-layout{display:flex;flex:1;overflow:hidden}.nav-panel{width:220px;min-width:220px;background:var(--bg-panel);padding:16px;display:flex;flex-direction:column;border-right:1px solid var(--border-light);overflow-y:auto}.nav-panel h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.5px;color:var(--text-secondary);margin-bottom:10px}.nav-filters{display:flex;gap:4px;margin-bottom:12px;flex-wrap:wrap}.nav-filters label{font-size:.75rem;display:flex;align-items:center;gap:3px;cursor:pointer}.nav-filters input{accent-color:#cc3366}.nav-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:4px}.nav-btn{width:100%;aspect-ratio:1;border:1px solid var(--border-color);border-radius:3px;background:var(--bg-nav-btn);font-size:.75rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .1s;color:var(--text-primary)}.nav-btn:hover{transform:scale(1.08)}.nav-btn.retry{border-radius:50%}.nav-btn.current{background:#f5c518;color:#333;border-color:#f5c518}.nav-btn.answered{background:#54595f;color:#fff;border-color:#54595f}.nav-btn.marked{background:#f78c38;color:#fff;border-color:#f78c38}.nav-btn.review-correct{background:#388e3c;color:#fff;border-color:#388e3c}.nav-btn.review-incorrect{background:#d32f2f;color:#fff;border-color:#d32f2f}.question-panel{flex:1;overflow-y:auto;padding:28px 32px;background:var(--bg-panel)}.question-header-row{display:flex;align-items:center;gap:12px;margin-bottom:4px}.question-header{font-size:1.3rem;font-weight:700;color:#c36}.btn-q-explanation{font-size:.75rem;font-weight:600;padding:4px 12px;background:var(--bg-panel);color:#c36;border:1.5px solid #cc3366;border-radius:20px;cursor:pointer;white-space:nowrap;transition:background .15s,color .15s;flex-shrink:0}.btn-q-explanation:hover{background:#c36;color:#fff}.q-expl-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:2000}.q-expl-modal{background:var(--bg-modal);border-radius:6px;padding:28px 32px;max-width:560px;width:90%;box-shadow:0 8px 32px #0003;display:flex;flex-direction:column;gap:16px}.q-expl-modal h4{font-size:1rem;color:#c36;font-weight:700;margin:0}.q-expl-modal p{font-size:.93rem;line-height:1.65;color:var(--text-modal);margin:0}.q-expl-modal .btn{align-self:flex-end;padding:8px 24px;font-size:.9rem}.review-failed-modal{max-width:720px;max-height:80vh}.review-failed-modal-body{flex:1;min-height:0;overflow-y:auto}.review-failed-modal-footer{margin-top:auto;padding-top:4px;flex-shrink:0}.review-failed-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}.review-failed-list li{display:flex;align-items:flex-start;gap:10px;line-height:1.5;color:var(--text-modal)}.review-failed-item-index{min-width:28px;font-weight:700;color:#c36}.alert-modal{background:var(--bg-modal);border-radius:8px;padding:32px 40px;max-width:420px;width:90%;box-shadow:0 12px 40px #0000004d;display:flex;flex-direction:column;align-items:center;gap:20px;border-top:4px solid #cc3366;text-align:center;animation:modalPop .2s ease}.alert-modal-msg{font-size:1.05rem;line-height:1.6;color:var(--text-modal);margin:0;font-weight:500}.alert-modal .btn{padding:8px 32px;font-size:.9rem}@keyframes modalPop{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.deep-expl-modal{background:var(--bg-modal);border-radius:6px;padding:28px 32px;max-width:720px;width:92%;box-shadow:0 8px 32px #00000040;display:flex;flex-direction:column;gap:16px;max-height:80vh;overflow-y:auto}.deep-expl-modal h4{font-size:1.1rem;color:#c36;font-weight:700;margin:0}.deep-expl-content{font-size:.93rem;line-height:1.75;color:var(--text-modal);white-space:pre-wrap}.deep-expl-modal .btn{align-self:flex-end;padding:8px 24px;font-size:.9rem}.study-card-inline-modal{padding:0;max-width:100%;margin:0;overflow:visible}.btn-deep-expl{margin-top:12px;padding:8px 18px;font-size:.88rem;font-weight:600;background:#6f42c1;color:#fff;border:none;border-radius:4px;cursor:pointer;transition:background .15s}.btn-deep-expl:hover{background:#5a32a3}.question-hint{font-size:.9rem;font-style:italic;color:#f78c38;margin-bottom:12px}.question-text{font-size:1.05rem;line-height:1.6;margin-bottom:20px;white-space:pre-wrap}.option-item{display:flex;align-items:flex-start;gap:10px;padding:10px 14px;border:2px solid transparent;border-radius:3px;margin-bottom:8px;cursor:pointer;transition:all .12s;background:var(--bg-option)}.option-item:hover{background:var(--bg-option-hover)}.option-item.selected{border-color:#c36;background:var(--bg-option-selected)}.option-item.correct{border-color:#388e3c;background:var(--bg-option-correct)}.option-item.missed{border-color:#f78c38;background:var(--bg-option-missed, rgba(247, 140, 56, .08));border-style:dashed}.option-item.incorrect{border-color:#d32f2f;background:var(--bg-option-incorrect)}.option-item.disabled{cursor:default;opacity:.85}.option-item.disabled:hover{background:inherit}.option-item input{margin-top:3px;accent-color:#cc3366;min-width:18px;min-height:18px}.option-item .option-letter{font-weight:700;min-width:24px;color:var(--text-muted)}.option-item .option-content{display:flex;flex-direction:column;flex:1}.option-item .option-text{font-size:.95rem;line-height:1.5}.option-item .option-explanation{font-size:.82rem;line-height:1.55;margin:6px 0 0;font-style:italic;color:var(--option-expl-color);border-top:1px dashed var(--option-expl-border);padding-top:5px}.option-item.correct .option-explanation{color:var(--text-correct-expl)}.option-item.missed .option-explanation{color:#f78c38}.option-item.incorrect .option-explanation{color:var(--text-incorrect-expl)}.question-result-banner{font-weight:700;font-size:1rem;padding:8px 14px;border-radius:4px;margin-bottom:12px;text-align:center}.question-result-banner.result-correct{background:#388e3c26;color:#388e3c;border:1px solid #388E3C}.question-result-banner.result-incorrect{background:#d32f2f26;color:#d32f2f;border:1px solid #d32f2f}.question-actions{display:flex;align-items:center;gap:16px;margin-top:16px;padding-top:16px;border-top:1px solid var(--border-section)}.mark-checkbox{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:.9rem;color:#f78c38;font-weight:500}.mark-checkbox input{accent-color:#F78C38;width:16px;height:16px}.study-question-actions{display:flex;flex-direction:column;align-items:stretch;gap:12px;min-width:max-content}.study-question-actions .btn{width:100%}.explanation-box{background:var(--bg-explanation);border-radius:3px;padding:20px;margin-top:20px;border:1px solid var(--border-explanation)}.explanation-box h4{color:var(--correct-green);margin-bottom:6px;font-size:.95rem}.explanation-box .correct-answer-line{color:#c36;font-weight:600;font-size:.9rem;margin-bottom:8px}.explanation-box p{font-size:.9rem;line-height:1.6;color:var(--text-explanation)}.reference-line{font-size:.8rem;color:var(--text-secondary);margin-top:10px;word-break:break-all}.bottombar{display:flex;justify-content:space-between;padding:12px 24px;background:var(--bg-bottombar);border-top:1px solid var(--border-bottombar);flex-shrink:0}.results-screen{max-width:600px;margin:0 auto;padding:40px 20px;text-align:center}.score-big{font-size:4rem;font-weight:800;margin:16px 0 4px}.score-big.pass{color:var(--correct-green)}.score-big.fail{color:var(--fail-red)}.result-badge{font-size:1.4rem;font-weight:700;margin-bottom:6px}.result-badge.pass{color:var(--correct-green)}.result-badge.fail{color:var(--fail-red)}.threshold-text{font-size:.9rem;color:var(--text-secondary);margin-bottom:24px}.details-table{margin:0 auto 28px;background:var(--bg-panel);border-radius:3px;box-shadow:2px 2px 5px var(--shadow);padding:16px 32px;display:inline-block;text-align:left}.details-row{display:flex;justify-content:space-between;gap:40px;padding:6px 0;font-size:.95rem}.details-row .value{font-weight:700}.details-row .value.correct{color:var(--correct-green)}.details-row .value.incorrect{color:var(--fail-red)}.details-row .value.primary{color:#c36}.details-row .value.secondary{color:var(--value-secondary)}.history-screen{max-width:900px;margin:0 auto;padding:40px 20px}.history-screen h1{font-size:1.6rem;color:#c36;margin-bottom:24px;text-align:center}.history-table{width:100%;border-collapse:collapse;background:var(--bg-panel);border-radius:3px;overflow:hidden;box-shadow:2px 2px 5px var(--shadow)}.history-table th{background:var(--bg-table-header);color:var(--text-table-header);padding:12px 14px;font-size:.85rem;text-transform:uppercase;letter-spacing:.3px}.history-table td{padding:10px 14px;font-size:.9rem;text-align:center;border-bottom:1px solid var(--border-section);color:var(--text-primary)}.history-table tr:hover td{background:var(--bg-table-row-hover)}.pass-text{color:var(--correct-green);font-weight:700}.fail-text{color:var(--fail-red);font-weight:700}.no-history{text-align:center;color:var(--text-secondary);padding:40px;font-size:1rem}.exam-container{display:flex;flex-direction:column;height:100vh}.drawer-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:4px 8px;line-height:1}.drawer-backdrop{display:none}@media(max-width:768px){.drawer-toggle{display:block}.topbar-logo{display:none}.nav-panel{position:fixed;top:56px;left:0;bottom:0;width:260px;min-width:260px;z-index:1000;transform:translate(-100%);transition:transform .3s ease;box-shadow:none}.nav-panel.open{transform:translate(0);box-shadow:4px 0 12px #00000026}.drawer-backdrop{display:block;position:fixed;top:56px;left:0;right:0;bottom:0;background:#0006;z-index:999}.topbar{gap:8px;padding:0 12px}.topbar .progress-text{font-size:.75rem}.topbar .mode-badge{display:none}.question-panel{padding:20px 16px}.start-logo-banner{padding:24px 32px;margin-bottom:20px}.start-logo{width:150px}}.cards-section{margin-top:32px;padding-top:28px;border-top:1px solid var(--border-light);text-align:center}.cards-section h3{color:#c36;margin-bottom:16px;font-size:1.15rem}.cards-mini-config{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin-bottom:16px}.cards-mini-config .config-row{justify-content:center}.btn-cards{background:#7b1fa2;border-color:#7b1fa2}.btn-cards:hover{background:#6a1b9a}.study-cards-container{height:100vh;display:flex;flex-direction:column;overflow:hidden}.study-card-content{flex:1;padding:32px 48px;max-width:900px;margin:0 auto;width:100%;overflow-y:auto;color:var(--text-primary);line-height:1.7;min-height:0}.study-card-content h1{color:#c36;font-size:1.6rem;margin-bottom:16px;border-bottom:2px solid var(--border-light);padding-bottom:8px}.study-card-content h2{color:var(--text-primary);font-size:1.25rem;margin:24px 0 12px}.study-card-content h3{color:var(--text-secondary);font-size:1.1rem;margin:20px 0 8px}.study-card-content p{margin-bottom:12px}.study-card-content ul,.study-card-content ol{margin:8px 0 16px 24px}.study-card-content li{margin-bottom:4px}.study-card-content strong{color:#c36}.study-card-content code{background:var(--bg-option);padding:2px 6px;border-radius:3px;font-size:.9em;border:1px solid var(--border-light)}.study-card-content pre{background:var(--bg-option);border:1px solid var(--border-light);border-radius:6px;padding:16px;overflow-x:auto;margin:12px 0}.study-card-content pre code{background:none;border:none;padding:0}.study-card-content table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.92rem}.study-card-content th{background:var(--bg-table-header);color:var(--text-table-header);padding:8px 12px;text-align:left;font-weight:600}.study-card-content td{padding:8px 12px;border-bottom:1px solid var(--border-light)}.study-card-content tr:hover td{background:var(--bg-table-row-hover)}.study-card-content blockquote{border-left:4px solid #cc3366;padding:12px 16px;margin:16px 0;background:var(--bg-explanation);border-radius:0 6px 6px 0;color:var(--text-explanation);font-style:italic}.study-card-content hr{border:none;border-top:1px solid var(--border-light);margin:20px 0}.btn-summary-toggle{padding:6px 18px;font-size:.85rem;font-weight:600;background:#6f42c1;color:#fff;border:none;border-radius:5px;cursor:pointer;transition:background .15s}.btn-summary-toggle:hover{background:#5a32a3}.btn-quiz-test{padding:10px 28px;font-size:.95rem;font-weight:600;background:#c36;color:#fff;border:none;border-radius:6px;cursor:pointer;transition:background .15s}.btn-quiz-test:hover{background:#a8284f}.quiz-modal{background:var(--bg-modal);border-radius:8px;padding:28px 32px;max-width:640px;width:92%;max-height:80vh;overflow-y:auto;box-shadow:0 8px 32px #00000040;display:flex;flex-direction:column;gap:16px;animation:modalPop .2s ease}.quiz-modal h4{font-size:1rem;color:#c36;font-weight:700;margin:0}.quiz-modal-question{font-size:1rem;line-height:1.65;color:var(--text-modal);margin:0}.quiz-modal-hint{font-size:.9rem;font-style:italic;color:#f78c38;margin:0}.quiz-modal-options{display:flex;flex-direction:column;gap:10px}.quiz-modal-option{padding:10px 14px;background:var(--bg-option);border:1px solid var(--border-light);border-radius:5px;font-size:.93rem;line-height:1.5;color:var(--text-primary)}.quiz-key{display:inline}.quiz-key-marked{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;border:2px solid #f9a825;background:#fff8e1;margin-right:4px;font-size:.88rem;line-height:1}[data-theme=dark] .quiz-key-marked{background:#3e3520;border-color:#f9a825}.quiz-modal-option-selectable{cursor:pointer;transition:background .15s,border-color .15s}.quiz-modal-option-selectable:hover{background:var(--bg-option-hover)}.quiz-opt-selected{background:#fff8e1;border-color:#f9a825}[data-theme=dark] .quiz-opt-selected{background:#3e3520;border-color:#f9a825}.quiz-opt-correct-picked{background:var(--bg-option-correct);border-color:var(--correct-green)}.quiz-opt-correct{background:#c8e6c973;border-color:#66bb6a80}[data-theme=dark] .quiz-opt-correct{background:#1a3a2a66;border-color:#66bb6a66}.quiz-opt-incorrect{background:var(--bg-option-incorrect);border-color:var(--fail-red)}.quiz-result{font-size:1rem;font-weight:700;padding:10px 16px;border-radius:6px;text-align:center}.quiz-result-correct{color:var(--correct-green);background:var(--bg-option-correct)}.quiz-result-incorrect{color:var(--fail-red);background:var(--bg-option-incorrect)}.quiz-result-answer{font-weight:500;font-size:.92rem}.quiz-modal-actions{display:flex;justify-content:flex-end;gap:10px}.quiz-alert{font-size:.92rem;font-weight:600;color:#e65100;background:#fff3e0;border:1px solid #ffcc80;border-radius:5px;padding:8px 14px;text-align:center}[data-theme=dark] .quiz-alert{color:#ffb74d;background:#3e2c10;border-color:#6d4c1d}.quiz-modal .btn{padding:8px 28px;font-size:.9rem}.card-nav-footer{display:flex;align-items:center;justify-content:center;gap:24px;padding:16px;background:var(--bg-bottombar);border-top:1px solid var(--border-bottombar)}.card-counter{font-weight:600;color:var(--text-secondary);min-width:80px;text-align:center}.card-empty{flex:1;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--text-secondary)}@media(max-width:768px){.study-card-content{padding:20px 16px}.cards-mini-config{flex-direction:column;align-items:center;gap:8px}}