:root{--bg:#0d1117;--surface:#161b22;--surface2:#21262d;--border:#30363d;--text:#c9d1d9;--text-secondary:#b1bac4;--accent:#58a6ff;--accent2:#3fb950;--accent3:#d2a8ff;--danger:#f85149;--notes-btn:#3b82f6;--auto-tag:#f0883e;--touch-target:44px;--safe-bottom:env(safe-area-inset-bottom,16px);--safe-top:env(safe-area-inset-top,0px)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;margin:0;padding:0}input,textarea{-webkit-user-select:text;user-select:text}html,body{touch-action:manipulation;width:100%;height:100%;position:fixed;overflow:hidden}body{background:var(--bg);color:var(--text);height:100vh;overscroll-behavior:none;height:-webkit-fill-available;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.screen{width:100vw;height:100vh;background:var(--bg);z-index:1;outline:none;flex-direction:column;height:-webkit-fill-available;display:none;position:fixed;top:0;left:0}.screen.active{display:flex}#authScreen{background:var(--bg);flex-direction:column;justify-content:center;align-items:center;gap:20px;padding:24px}#authScreen.active{display:flex}#authScreen .auth-logo{margin-bottom:4px;font-size:4rem}#authScreen h1{color:var(--text);letter-spacing:-.02em;font-size:1.6rem;font-weight:700}#authScreen .auth-subtitle{color:var(--text-secondary);text-align:center;max-width:280px;font-size:.85rem;line-height:1.5}#authScreen .auth-form{flex-direction:column;gap:10px;width:100%;max-width:340px;display:flex}#authScreen .auth-input{border:1px solid var(--border);background:var(--surface2);width:100%;color:var(--text);border-radius:12px;outline:none;padding:13px 16px;font-size:.9rem;transition:border-color .2s}#authScreen .auth-input:focus{border-color:var(--accent)}#authScreen .auth-btn{cursor:pointer;border:none;border-radius:12px;width:100%;padding:13px;font-size:.9rem;font-weight:600;transition:all .2s}#authScreen .auth-btn.primary{background:var(--accent);color:#fff}#authScreen .auth-btn.primary:active{opacity:.9;transform:scale(.98)}#authScreen .auth-btn.secondary{border:1px solid var(--border);color:var(--text);background:0 0}#authScreen .auth-btn.secondary:active{background:var(--surface2)}#authScreen .auth-btn:disabled{opacity:.5;cursor:not-allowed}#authScreen .auth-divider{color:var(--text-secondary);align-items:center;gap:12px;width:100%;max-width:340px;font-size:.7rem;display:flex}#authScreen .auth-divider:before,#authScreen .auth-divider:after{content:"";background:var(--border);flex:1;height:1px}#authScreen .auth-error{color:var(--danger);text-align:center;min-height:18px;font-size:.75rem}#authScreen .auth-toggle{color:var(--accent);cursor:pointer;font-size:.8rem;font-weight:500}#authScreen .skip-auth{color:var(--text-secondary);cursor:pointer;opacity:.8;font-size:.75rem;text-decoration:underline}#authScreen .skip-auth:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px}#readingScreen{background:#000}#readingScreen .reader-content{flex:1;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}#readingScreen #pdfCanvas{background:#fff;border-radius:2px;max-width:100%;max-height:100%;box-shadow:0 0 40px #000c}#readingScreen .reader-top-bar{top:var(--safe-top);z-index:20;pointer-events:none;opacity:0;justify-content:space-between;align-items:center;padding:10px 14px;transition:opacity .18s,transform .18s;display:flex;position:absolute;left:0;right:0;transform:translateY(-8px)}#readingScreen .reader-top-bar>*{pointer-events:none}#readingScreen.chrome-visible .reader-top-bar{opacity:1;transform:translateY(0)}#readingScreen.chrome-visible .reader-top-bar>*{pointer-events:auto}#readingScreen .reader-chrome-btn{color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(10px);background:#0000008c;border:1px solid #fff3;border-radius:20px;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.05rem;display:flex}#readingScreen .reader-chrome-btn:active{background:#fff3;transform:scale(.92)}#readingScreen .page-indicator-top{color:#fff;-webkit-backdrop-filter:blur(10px);background:#0000008c;border:1px solid #ffffff26;border-radius:16px;padding:8px 14px;font-size:.75rem;font-weight:500}#readingScreen .tap-zones{pointer-events:none;z-index:5;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}#readingScreen .tap-zone{pointer-events:auto;cursor:pointer}#readingScreen .tap-zone-side{flex:0 0 40%}#readingScreen .tap-zone-center{flex:1}#readingScreen .tap-zone:focus-visible{outline-offset:-10px;outline:2px dashed #fff6}#readingScreen .notes-notch{left:50%;bottom:calc(12px + var(--safe-bottom));z-index:15;color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(10px);background:#0000008c;border:1px solid #ffffff2e;border-radius:14px 14px 6px 6px;justify-content:center;align-items:center;width:64px;height:28px;font-size:.95rem;transition:transform .12s,background .12s;display:flex;position:absolute;transform:translate(-50%)}#readingScreen .notes-notch:hover{background:#000000b3}#readingScreen .notes-notch:active{background:#ffffff2e;transform:translate(-50%)scale(.92)}#readingScreen .notes-notch:focus-visible{outline-offset:2px;outline:2px solid #fff9}#readingScreen .reader-placeholder{color:#888;text-align:center;padding:20px}#readingScreen .reader-placeholder .icon{opacity:.3;margin-bottom:16px;font-size:4rem}#notesScreen{background:var(--bg)}#notesScreen .notes-top-bar{padding:12px 16px;padding-top:calc(12px + var(--safe-top));background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;display:flex}#notesScreen .back-to-book-btn{border:1px solid var(--border);background:var(--surface2);width:40px;height:40px;color:var(--text);cursor:pointer;border-radius:20px;justify-content:center;align-items:center;font-size:1rem;display:flex}#notesScreen .back-to-book-btn:active{background:var(--notes-btn);border-color:var(--notes-btn)}#notesScreen .page-badge-large{background:var(--notes-btn);color:#fff;border-radius:16px;padding:8px 16px;font-size:.85rem;font-weight:600}#notesScreen .notes-actions{gap:8px;display:flex}#notesScreen .notes-actions button{border:1px solid var(--border);background:var(--surface2);width:40px;height:40px;color:var(--text);cursor:pointer;border-radius:20px;justify-content:center;align-items:center;font-size:1rem;display:flex}#notesScreen .notes-actions button:active{background:var(--accent);border-color:var(--accent)}#notesScreen .tags-bar{border-bottom:1px solid var(--border);flex-wrap:wrap;flex-shrink:0;align-items:flex-start;gap:8px;min-height:44px;padding:8px 16px;display:flex}#notesScreen .tag{background:var(--surface2);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:14px;align-items:center;gap:6px;padding:6px 12px;font-size:.75rem;display:inline-flex}#notesScreen .tag:active{border-color:var(--accent);background:#58a6ff26}#notesScreen .tag .remove-tag{color:var(--text-secondary);cursor:pointer;margin-left:2px;font-size:.9rem}#notesScreen .tag-input-wrapper{align-items:center;gap:6px;display:flex;position:relative}#notesScreen #tagInput{border:1px solid var(--border);background:var(--bg);width:100px;color:var(--text);border-radius:14px;outline:none;padding:6px 10px;font-size:.75rem}#notesScreen #tagInput:focus{border-color:var(--accent)}#notesScreen #addTagBtn{border:1px solid var(--border);background:var(--surface2);width:32px;height:32px;color:var(--text);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;font-size:1rem;display:flex}#notesScreen #addTagBtn:active{background:var(--accent)}#notesScreen .auto-tag-btn{border:1px solid var(--auto-tag);color:var(--auto-tag);cursor:pointer;white-space:nowrap;background:#f0883e1a;border-radius:14px;padding:6px 10px;font-size:.7rem;font-weight:500}#notesScreen .auto-tag-btn:active{background:#f0883e4d}#notesScreen .auto-tag-suggestions{flex-wrap:wrap;gap:4px;padding:4px 16px 8px;display:flex}#notesScreen .auto-tag-chip{background:var(--surface2);border:1px dashed var(--auto-tag);color:var(--auto-tag);cursor:pointer;border-radius:12px;padding:4px 10px;font-size:.7rem}#notesScreen .auto-tag-chip:active{background:var(--auto-tag);color:#fff;border-style:solid}#notesScreen .tag-suggestions{background:var(--surface);border:1px solid var(--border);z-index:30;border-radius:10px;min-width:140px;max-height:150px;display:none;position:absolute;top:100%;left:0;overflow-y:auto;box-shadow:0 8px 24px #00000080}#notesScreen .tag-suggestions.active{display:block}#notesScreen .tag-suggestion-item{cursor:pointer;color:var(--text);border-bottom:1px solid var(--border);padding:8px 14px;font-size:.75rem}#notesScreen .tag-suggestion-item:last-child{border-bottom:none}#notesScreen .tag-suggestion-item:active,#notesScreen .tag-suggestion-item.selected{background:var(--accent);color:#fff}#notesScreen .notes-textarea-container{flex:1;overflow:hidden}#notesScreen #notesArea{resize:none;width:100%;height:100%;color:var(--text);background:var(--bg);-webkit-user-select:text;user-select:text;border:none;outline:none;padding:20px 16px;font-family:Georgia,Times New Roman,serif;font-size:1rem;line-height:1.7}#notesScreen #notesArea::placeholder{color:#6e7681;font-style:italic}#notesScreen .notes-bottom-bar{padding:8px 16px;padding-bottom:calc(8px + var(--safe-bottom));border-top:1px solid var(--border);flex-shrink:0;gap:8px;display:flex}#notesScreen .nav-btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);cursor:pointer;text-align:center;min-height:var(--touch-target);border-radius:12px;flex:1;justify-content:center;align-items:center;gap:6px;padding:12px;font-size:.8rem;font-weight:500;display:flex}#notesScreen .nav-btn:active{background:var(--accent);border-color:var(--accent);transform:scale(.97)}#notesScreen .nav-btn.primary{background:var(--notes-btn);border-color:var(--notes-btn);color:#fff}#homeScreen{background:var(--bg)}#homeScreen .home-top-bar{padding:12px 16px;padding-top:calc(12px + var(--safe-top));background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;display:flex}#homeScreen .home-top-bar h1{font-size:1.1rem;font-weight:600}#homeScreen .close-home-btn{border:1px solid var(--border);background:var(--surface2);width:40px;height:40px;color:var(--text);cursor:pointer;border-radius:20px;justify-content:center;align-items:center;font-size:1rem;display:flex}#homeScreen .home-body{-webkit-overflow-scrolling:touch;flex-direction:column;flex:1;gap:16px;padding:16px;display:flex;overflow-y:auto}#homeScreen .section-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);margin-bottom:8px;font-size:.75rem;font-weight:600}#homeScreen .book-card{background:var(--surface2);border:1px solid var(--border);cursor:pointer;border-radius:14px;align-items:center;gap:14px;padding:14px 16px;display:flex}#homeScreen .book-card:active{border-color:var(--accent);transform:scale(.98)}#homeScreen .book-card.active-book{border-color:var(--accent);background:#58a6ff0f}#homeScreen .book-card:focus-visible{border-color:var(--accent);outline:2px solid var(--accent);outline-offset:2px}#homeScreen .book-card .book-emoji{flex-shrink:0;font-size:2.2rem}#homeScreen .book-card .book-thumb{object-fit:cover;background:var(--surface);border-radius:4px;flex-shrink:0;width:44px;height:60px;box-shadow:0 1px 4px #0006}#homeScreen .book-card .book-info{flex:1;overflow:hidden}#homeScreen .book-card .book-name{white-space:nowrap;text-overflow:ellipsis;font-size:.9rem;font-weight:500;overflow:hidden}#homeScreen .book-card .book-meta{color:var(--text-secondary);margin-top:3px;font-size:.7rem}#homeScreen .book-card .delete-book-btn{width:36px;height:36px;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:50%;flex-shrink:0;font-size:1.1rem}#homeScreen .book-card .delete-book-btn:active{color:var(--danger);background:#f851491a}#homeScreen .search-input{border:1px solid var(--border);background:var(--surface2);width:100%;color:var(--text);border-radius:12px;outline:none;margin-bottom:8px;padding:12px 16px;font-size:.9rem}#homeScreen .search-input:focus{border-color:var(--accent)}#homeScreen .add-book-area{background:var(--surface);border:1px dashed var(--border);border-radius:14px;flex-direction:column;gap:12px;padding:16px;display:flex}#homeScreen .add-book-area label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}#homeScreen #pdfFileInput{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:10px;width:100%;padding:10px;font-size:.8rem}#homeScreen #pdfFileInput::-webkit-file-upload-button{background:var(--surface2);border:1px solid var(--border);color:var(--text);border-radius:6px;margin-right:8px;padding:6px 12px}#homeScreen #pdfFileInput::file-selector-button{background:var(--surface2);border:1px solid var(--border);color:var(--text);border-radius:6px;margin-right:8px;padding:6px 12px}#homeScreen .home-btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);cursor:pointer;text-align:center;border-radius:12px;padding:12px 20px;font-size:.85rem;font-weight:500}#homeScreen .home-btn:active{background:var(--accent);border-color:var(--accent)}#homeScreen .home-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}#homeScreen .home-btn:disabled{opacity:.4}#homeScreen #pdfUrlInput{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);border-radius:12px;padding:12px 16px;font-size:.9rem}#homeScreen .divider{text-align:center;color:var(--text-secondary);font-size:.75rem}#homeScreen .mindmap-btn{border:1px solid var(--border);background:var(--surface2);width:100%;color:var(--text);cursor:pointer;border-radius:14px;justify-content:center;align-items:center;gap:8px;padding:14px;font-size:.9rem;font-weight:500;display:flex}#mindmapScreen{background:#06080d}#mindmapScreen .mindmap-header{top:var(--safe-top);z-index:20;pointer-events:none;justify-content:space-between;align-items:center;padding:8px 12px;display:flex;position:absolute;left:0;right:0}#mindmapScreen .mindmap-header>*{pointer-events:auto}#mindmapScreen .mindmap-header button{color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#00000080;border:1px solid #ffffff26;border-radius:20px;justify-content:center;align-items:center;width:40px;height:40px;font-size:1rem;display:flex}#mindmapScreen .mindmap-header button:active{background:#fff3}#mindmapScreen .mindmap-header .mindmap-title{color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0006;border:1px solid #ffffff1a;border-radius:14px;padding:8px 16px;font-size:.85rem;font-weight:500}#mindmapScreen #mindmapCanvas{touch-action:none;cursor:grab;width:100%;height:100%}#mindmapScreen #mindmapCanvas:active{cursor:grabbing}#mindmapScreen .mindmap-hint{color:#ffffff73;pointer-events:none;z-index:5;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0006;border-radius:12px;padding:8px 16px;font-size:.65rem;line-height:1.6;position:absolute;bottom:30px;left:50%;transform:translate(-50%)}.toast{background:var(--accent2);color:#fff;z-index:200;opacity:0;pointer-events:none;border-radius:20px;padding:10px 20px;font-size:.8rem;font-weight:500;transition:opacity .3s;position:fixed;bottom:100px;left:50%;transform:translate(-50%)}.toast.show{opacity:1}.spinner{border:3px solid #333;border-top-color:#fff;border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button:active:disabled{opacity:.5!important;transform:none!important}#readingScreen .spine-heatmap{z-index:6;cursor:pointer;touch-action:none;background:#00000040;border:1px solid #ffffff14;border-radius:5px;width:10px;height:100%;position:absolute;top:0;right:4px}#readingScreen .spine-heatmap:active{width:14px;right:2px}#quizScreen{background:var(--bg)}#quizScreen .quiz-select-wrap,#quizScreen .quiz-test-wrap,#quizScreen .quiz-review-wrap{flex-direction:column;flex:1;min-height:0;display:none}#quizScreen[data-mode=select] .quiz-select-wrap,#quizScreen[data-mode=test] .quiz-test-wrap,#quizScreen[data-mode=review] .quiz-review-wrap{display:flex}.quiz-select-body{flex-direction:column;gap:14px;width:100%;max-width:720px;margin:0 auto;padding:16px;display:flex;overflow-y:auto}.quiz-select-note{color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:.8rem;line-height:1.5}.quiz-select-list{flex-direction:column;gap:10px;display:flex}.quiz-card{background:var(--surface);border:1px solid var(--border);color:var(--text);cursor:pointer;text-align:left;border-radius:12px;flex-direction:column;gap:6px;padding:16px;transition:border-color .2s,background .2s;display:flex}.quiz-card:hover{border-color:var(--accent)}.quiz-card:active{background:var(--surface2);transform:scale(.99)}.quiz-card-title{font-size:1rem;font-weight:600}.quiz-card-desc{color:var(--text-secondary);font-size:.8rem;line-height:1.5}.quiz-card-meta{color:var(--accent);margin-top:4px;font-size:.75rem;font-weight:600}.quiz-top-bar{padding:10px 14px;padding-top:calc(10px + var(--safe-top));background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;display:flex}.quiz-counter{color:var(--text);font-size:.85rem;font-weight:500}.quiz-timer{background:var(--surface2);color:var(--text);font-variant-numeric:tabular-nums;border:1px solid var(--border);text-align:center;border-radius:14px;min-width:60px;padding:6px 12px;font-size:.85rem;font-weight:600}.quiz-timer.low{border-color:var(--danger);color:var(--danger);background:#f851492e}.quiz-body{flex:1;grid-template-columns:1fr 1fr;gap:0;min-height:0;display:grid}@media (max-width:760px){.quiz-body{grid-template-rows:minmax(0,1fr) minmax(0,1fr);grid-template-columns:1fr}}.quiz-passage-pane{border-right:1px solid var(--border);flex-direction:column;gap:12px;padding:18px 20px;display:flex;overflow-y:auto}@media (max-width:760px){.quiz-passage-pane{border-right:none;border-bottom:1px solid var(--border)}}.quiz-passage{color:var(--text);font-size:.95rem;line-height:1.65}.quiz-passage p{margin-bottom:1em}.quiz-passage p:last-child{margin-bottom:0}.quiz-passage-block{white-space:normal}.quiz-passage-sep{border:none;border-top:1px dashed var(--border);margin:16px 0}.quiz-cite{color:var(--text-secondary);border-top:1px solid var(--border);padding-top:6px;font-size:.72rem;font-style:italic}.quiz-question-pane{flex-direction:column;gap:14px;padding:18px 20px;display:flex;overflow-y:auto}.quiz-stem{color:var(--text);font-size:.95rem;font-weight:500;line-height:1.5}.quiz-choices{flex-direction:column;gap:8px;display:flex}.quiz-choice{background:var(--surface);border:1px solid var(--border);color:var(--text);cursor:pointer;text-align:left;border-radius:10px;align-items:flex-start;gap:12px;padding:12px 14px;font-size:.9rem;line-height:1.5;transition:border-color .15s,background .15s;display:flex}.quiz-choice:hover{border-color:var(--accent)}.quiz-choice.selected{border-color:var(--accent);background:#58a6ff1f}.quiz-choice-letter{background:var(--surface2);border:1px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;font-size:.8rem;font-weight:600;display:inline-flex}.quiz-choice.selected .quiz-choice-letter{background:var(--accent);border-color:var(--accent);color:#fff}.quiz-choice-text{flex:1}.quiz-question-actions{flex-wrap:wrap;gap:10px;margin-top:4px;display:flex}.quiz-mark-btn,.quiz-submit-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:14px;padding:8px 14px;font-size:.8rem}.quiz-mark-btn.marked{border-color:var(--auto-tag);color:var(--auto-tag)}.quiz-submit-btn{background:var(--accent);border-color:var(--accent);color:#fff;margin-left:auto;font-weight:600}.quiz-bottom-bar{padding:10px 14px;padding-bottom:calc(10px + var(--safe-bottom));background:var(--surface);border-top:1px solid var(--border);flex-shrink:0;align-items:center;gap:10px;display:flex}.quiz-bottom-bar .nav-btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);cursor:pointer;border-radius:12px;flex-shrink:0;padding:10px 14px;font-size:.8rem}.quiz-bottom-bar .nav-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.quiz-bottom-bar .nav-btn:disabled{opacity:.4;cursor:not-allowed}.quiz-navigator{scrollbar-width:thin;flex:1;gap:4px;padding:2px;display:flex;overflow-x:auto}.quiz-nav-cell{border:1px solid var(--border);background:var(--surface2);width:32px;height:32px;color:var(--text-secondary);cursor:pointer;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;font-size:.75rem;font-weight:600;display:flex}.quiz-nav-cell.answered{color:var(--text);border-color:var(--accent);background:#58a6ff26}.quiz-nav-cell.marked{box-shadow:inset 0 -3px 0 var(--auto-tag)}.quiz-nav-cell.current{outline:2px solid var(--accent);outline-offset:1px}.quiz-review-body-outer{flex-direction:column;gap:20px;width:100%;max-width:820px;margin:0 auto;padding:16px;display:flex;overflow-y:auto}.quiz-review-summary{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:14px;padding:18px;display:flex}.quiz-review-score-row,.quiz-review-time-row{justify-content:space-between;align-items:baseline;display:flex}.quiz-review-score-label,.quiz-review-time-label{color:var(--text-secondary);font-size:.85rem}.quiz-review-score{color:var(--accent);font-variant-numeric:tabular-nums;font-size:1.6rem;font-weight:700}.quiz-review-time{color:var(--text);font-variant-numeric:tabular-nums;font-size:.9rem}.quiz-review-domains{flex-direction:column;gap:8px;margin:4px 0 0;padding:0;list-style:none;display:flex}.quiz-domain-row{color:var(--text);grid-template-columns:1fr auto 120px;align-items:center;gap:12px;font-size:.85rem;display:grid}.quiz-domain-name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.quiz-domain-score{color:var(--text-secondary);font-variant-numeric:tabular-nums;font-size:.8rem}.quiz-domain-bar{background:var(--surface2);border-radius:6px;height:8px;overflow:hidden}.quiz-domain-bar-fill{background:var(--accent);height:100%;display:block}.quiz-review-actions{gap:10px;margin-top:6px;display:flex}.quiz-review-btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);cursor:pointer;border-radius:12px;flex:1;padding:12px;font-size:.85rem;font-weight:600}.quiz-review-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.quiz-review-questions{flex-direction:column;gap:8px;display:flex}.quiz-review-item{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden}.quiz-review-item summary{cursor:pointer;color:var(--text);align-items:flex-start;gap:10px;padding:12px 14px;font-size:.85rem;list-style:none;display:flex}.quiz-review-item summary::-webkit-details-marker{display:none}.quiz-review-num{color:var(--text-secondary);min-width:24px;font-weight:600}.quiz-review-mark{min-width:18px;font-weight:700}.quiz-review-item.right .quiz-review-mark{color:var(--accent2)}.quiz-review-item.wrong .quiz-review-mark{color:var(--danger)}.quiz-review-stem{flex:1;line-height:1.5}.quiz-review-body{color:var(--text);flex-direction:column;gap:10px;padding:0 14px 14px;font-size:.85rem;line-height:1.55;display:flex}.quiz-review-passage{background:var(--surface2);color:var(--text);border-radius:8px;padding:10px 12px}.quiz-review-passage p{margin-bottom:.8em}.quiz-review-passage p:last-child{margin-bottom:0}.quiz-review-row{flex-wrap:wrap;gap:8px;display:flex}.quiz-review-label{color:var(--text-secondary);font-weight:600}.quiz-review-expl{border-left:3px solid var(--accent);background:#58a6ff14;border-radius:0 8px 8px 0;padding:10px 12px}.quiz-review-tags{color:var(--text-secondary);font-size:.72rem}.math-frac{vertical-align:middle;text-align:center;flex-direction:column;padding:0 2px;font-size:.92em;line-height:1;display:inline-flex}.math-num{border-bottom:1px solid;padding:0 4px 2px}.math-den{padding:2px 4px 0}.math-sqrt{align-items:flex-start;display:inline-flex}.math-sqrt-sign{font-size:1.05em;line-height:1}.math-sqrt-radicand{border-top:1px solid;margin-left:-2px;padding:0 4px}.quiz-stem,.quiz-passage,.quiz-choice-text,.quiz-review-stem,.quiz-review-expl,.quiz-walk-step-body,.quiz-walk-step-expr{line-height:1.6}.quiz-gridin-wrap{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:8px;padding:16px;display:flex}.quiz-gridin-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:.78rem;font-weight:600}.quiz-gridin-input{border:1px solid var(--border);background:var(--surface2);color:var(--text);font-variant-numeric:tabular-nums;-webkit-user-select:text;user-select:text;border-radius:10px;outline:none;padding:12px 14px;font-size:1.05rem;transition:border-color .15s,background .15s}.quiz-gridin-input:focus{border-color:var(--accent);background:#58a6ff14}.quiz-gridin-hint{color:var(--text-secondary);font-size:.72rem;line-height:1.5}.quiz-body.no-passage{grid-template-columns:1fr}.quiz-body.no-passage .quiz-passage-pane{display:none}.quiz-review-actions-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-top:4px;display:flex}.quiz-walk-btn{border:1px solid var(--accent);color:var(--accent);cursor:pointer;background:#58a6ff1f;border-radius:14px;padding:8px 14px;font-size:.78rem;font-weight:600}.quiz-walk-btn:hover{background:#58a6ff38}.quiz-walk-backdrop{z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0009;justify-content:center;align-items:center;padding:16px;display:none;position:fixed;top:0;bottom:0;left:0;right:0}.quiz-walk-backdrop.open{display:flex}body.quiz-walk-open{overflow:hidden}.quiz-walk-modal{background:var(--surface);border:1px solid var(--border);border-radius:16px;flex-direction:column;width:100%;max-width:560px;max-height:calc(100vh - 32px);display:flex;overflow:hidden;box-shadow:0 18px 48px #00000080}.quiz-walk-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.quiz-walk-title{color:var(--accent);text-transform:uppercase;letter-spacing:.06em;font-size:.78rem;font-weight:700}.quiz-walk-close{border:1px solid var(--border);background:var(--surface2);width:32px;height:32px;color:var(--text);cursor:pointer;border-radius:16px;font-size:.85rem}.quiz-walk-step-counter{color:var(--text-secondary);padding:8px 16px 0;font-size:.75rem}.quiz-walk-content{flex:1;padding:12px 16px 16px;overflow-y:auto}.quiz-walk-step-title{color:var(--text);margin-bottom:8px;font-size:1.05rem;font-weight:600}.quiz-walk-step-body{color:var(--text);font-size:.92rem}.quiz-walk-step-expr{background:var(--surface2);color:var(--text);text-align:center;border-left:3px solid var(--accent);border-radius:10px;margin-top:14px;padding:14px 16px;font-size:1.05rem}.quiz-walk-dots{flex-wrap:wrap;gap:6px;padding:0 16px 8px;display:flex}.quiz-walk-dot{border:1px solid var(--border);background:var(--surface2);cursor:pointer;border-radius:4px;width:22px;height:8px;padding:0}.quiz-walk-dot.done{border-color:var(--accent);background:#58a6ff80}.quiz-walk-dot.current{background:var(--accent);border-color:var(--accent)}.quiz-walk-actions{border-top:1px solid var(--border);background:var(--surface2);gap:10px;padding:12px 16px;display:flex}.quiz-walk-actions .nav-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:10px;flex:1;padding:10px;font-size:.85rem;font-weight:600}.quiz-walk-actions .nav-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.quiz-walk-actions .nav-btn:disabled{opacity:.4;cursor:not-allowed}#insightsScreen,#tagsScreen,#quotesScreen,#statsScreen{background:var(--bg)}.insights-top-bar{padding:12px 16px;padding-top:calc(12px + var(--safe-top));background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;display:flex}.insights-top-bar h2{text-align:center;color:var(--text);flex:1;margin:0;font-size:1.05rem;font-weight:600}.insights-back-btn{border:1px solid var(--border);background:var(--surface2);width:40px;height:40px;color:var(--text);cursor:pointer;border-radius:20px;justify-content:center;align-items:center;font-size:1.1rem;display:flex}.insights-back-btn:active{background:var(--accent);border-color:var(--accent)}.insights-body{-webkit-overflow-scrolling:touch;flex-direction:column;flex:1;gap:16px;padding:16px;display:flex;overflow-y:auto}.insights-grid{grid-template-columns:1fr;gap:12px;display:grid}@media (min-width:520px){.insights-grid{grid-template-columns:1fr 1fr}}.insight-card{-webkit-appearance:none;appearance:none;background:var(--surface2);border:1px solid var(--border);color:var(--text);text-align:left;cursor:pointer;border-radius:14px;flex-direction:column;gap:6px;min-height:96px;padding:18px 16px;display:flex}.insight-card:active{border-color:var(--accent);background:#58a6ff0f;transform:scale(.99)}.insight-card-icon{font-size:1.6rem}.insight-card-title{font-size:.95rem;font-weight:600}.insight-card-desc{color:var(--text-secondary);font-size:.75rem}.insights-status{color:var(--text-secondary);text-align:center;min-height:16px;font-size:.75rem}.insights-section{flex-direction:column;gap:10px;display:flex}.section-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);font-size:.7rem;font-weight:600}.empty-state{color:var(--text-secondary);text-align:center;padding:20px;font-size:.85rem}.tag-bars{flex-direction:column;gap:6px;display:flex}.tag-bar-row{align-items:center;gap:8px;min-height:28px;display:flex}.tag-bar-label{max-width:35%;color:var(--text);white-space:nowrap;text-overflow:ellipsis;flex:none;font-size:.75rem;overflow:hidden}.tag-bar-track{background:var(--surface2);border-radius:6px;flex:1;height:12px;overflow:hidden}.tag-bar-fill{border-radius:6px;height:100%;transition:width .3s;display:block}.tag-bar-count{color:var(--text-secondary);text-align:right;flex:none;min-width:22px;font-size:.7rem}.chord-hint{color:var(--text-secondary);text-align:center;font-size:.7rem}.chord-wrap{aspect-ratio:1;background:var(--surface);border:1px solid var(--border);border-radius:14px;width:100%;max-width:480px;margin:0 auto;display:block;overflow:hidden}.chord-wrap canvas{touch-action:none;width:100%;height:100%;display:block}.chord-drilldown{flex-direction:column;gap:6px;display:flex}.drilldown-title{color:var(--text);padding:4px 0;font-size:.8rem;font-weight:600}.drilldown-row{-webkit-appearance:none;appearance:none;background:var(--surface2);border:1px solid var(--border);color:var(--text);text-align:left;cursor:pointer;border-radius:10px;justify-content:space-between;gap:10px;min-height:44px;padding:10px 12px;display:flex}.drilldown-row:active{border-color:var(--accent);background:#58a6ff14}.drilldown-book{text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:.8rem;overflow:hidden}.drilldown-page{color:var(--text-secondary);font-size:.75rem}.tag-link-form{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.tag-link-input{background:var(--surface2);border:1px solid var(--border);min-width:0;color:var(--text);border-radius:8px;flex:120px;padding:8px 10px;font-size:.85rem}.tag-link-input:focus{border-color:var(--accent);outline:none}.tag-link-sep{color:var(--text-secondary);font-size:.9rem}.tag-link-add{-webkit-appearance:none;appearance:none;background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;min-height:36px;padding:8px 12px;font-size:.8rem}.tag-link-add:active{filter:brightness(.9)}.tag-link-chips{flex-wrap:wrap;gap:6px;margin-top:4px;display:flex}.tag-link-chip{border:1px solid var(--border);color:var(--text);background:#dce6ff14;border-radius:999px;align-items:center;gap:6px;padding:4px 10px;font-size:.78rem;display:inline-flex}.tag-link-chip-sep{color:var(--text-secondary)}.tag-link-chip-remove{-webkit-appearance:none;appearance:none;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;padding:0 2px;font-size:.85rem;line-height:1}.tag-link-chip-remove:hover{color:var(--text)}.tag-link-empty{text-align:left;padding:8px 4px;font-style:italic}.quotes-filters{background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;flex-shrink:0;gap:8px;padding:12px 16px;display:flex}.quotes-search{margin-bottom:0}#quotesScreen .search-input{border:1px solid var(--border);background:var(--surface2);width:100%;color:var(--text);border-radius:12px;outline:none;padding:12px 16px;font-size:.9rem}#quotesScreen .search-input:focus{border-color:var(--accent)}.quotes-filter-row{flex-wrap:wrap;gap:8px;display:flex}.quotes-select{border:1px solid var(--border);background:var(--surface2);min-width:140px;color:var(--text);min-height:var(--touch-target);border-radius:10px;flex:1;padding:10px 12px;font-size:.8rem}.quotes-count{color:var(--text-secondary);font-size:.7rem}.quote-card{background:var(--surface2);border:1px solid var(--border);border-radius:14px;flex-direction:column;gap:10px;padding:14px 16px;display:flex}.quote-text{color:var(--text);-webkit-user-select:text;user-select:text;font-family:Georgia,Times New Roman,serif;font-size:.95rem;line-height:1.5}.quote-source{-webkit-appearance:none;appearance:none;border:1px solid var(--border);cursor:pointer;color:var(--text);background:0 0;border-radius:10px;justify-content:space-between;align-items:center;gap:8px;min-height:44px;padding:8px 12px;display:flex}.quote-source:active{border-color:var(--accent);background:#58a6ff0f}.quote-book{text-overflow:ellipsis;white-space:nowrap;text-align:left;flex:1;font-size:.8rem;overflow:hidden}.quote-page{color:var(--text-secondary);font-size:.7rem}.quote-tags{flex-wrap:wrap;gap:6px;display:flex}.quote-tag{background:var(--bg);border:1px solid var(--border);color:var(--text-secondary);border-radius:10px;padding:3px 8px;font-size:.7rem}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}@media (min-width:520px){.stat-grid{grid-template-columns:repeat(3,1fr)}}.stat-card{background:var(--surface2);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:4px;padding:12px 14px;display:flex}.stat-value{color:var(--accent);font-size:1.4rem;font-weight:700}.stat-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;font-size:.7rem}.per-book-list{flex-direction:column;gap:10px;display:flex}.per-book-card{background:var(--surface2);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:6px;padding:12px 14px;display:flex}.per-book-title{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:.9rem;font-weight:600;overflow:hidden}.per-book-meta{color:var(--text-secondary);font-size:.75rem}.per-book-tags{flex-wrap:wrap;gap:6px;display:flex}.mini-tag{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:3px 8px;font-size:.7rem}.mini-empty{color:var(--text-secondary);font-size:.7rem;font-style:italic}#mindmapScreen .mindmap-scope-toggle{top:calc(var(--safe-top) + 60px);color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(10px);z-index:25;background:#00000080;border:1px solid #ffffff26;border-radius:14px;min-height:32px;padding:6px 12px;font-size:.7rem;position:absolute;left:50%;transform:translate(-50%)}#mindmapScreen .mindmap-scope-toggle[aria-pressed=true]{background:var(--accent);border-color:var(--accent)}