.library-container{max-width:1200px;margin:0 auto;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.library-title{font-size:28px;font-weight:600;margin-bottom:24px;color:var(--text-color);text-align:center}.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:24px}.book-card{background-color:var(--card-bg-color, #ffffff);border-radius:12px;overflow:hidden;box-shadow:0 2px 10px #0000000d;transition:transform .2s ease,box-shadow .2s ease;position:relative;cursor:pointer}.book-card:hover{transform:translateY(-4px);box-shadow:0 8px 16px #0000001a}.book-cover-container{position:relative;padding-top:150%;overflow:hidden}.book-cover{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}.book-progress-bar{position:absolute;bottom:0;left:0;width:100%;height:6px;background-color:#0003}.book-progress-fill{height:100%;background-color:#007aff;transition:width .3s ease}.book-progress-text{position:absolute;bottom:10px;right:10px;background-color:#0009;color:#fff;padding:2px 8px;border-radius:10px;font-size:12px;font-weight:500}.book-info{padding:12px}.book-title{font-size:16px;font-weight:600;margin:0 0 4px;color:var(--text-color);display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis}.book-author{font-size:14px;color:var(--secondary-text-color, #666);margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:1;line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis}.book-last-read{font-size:12px;color:var(--tertiary-text-color, #999);margin:0}.book-remove-btn{position:absolute;top:8px;right:8px;width:24px;height:24px;border-radius:50%;background-color:#0009;color:#fff;border:none;font-size:16px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s ease}.book-card:hover .book-remove-btn{opacity:1}.library-empty{text-align:center;padding:60px 20px;color:var(--secondary-text-color, #666)}.library-empty h2{font-size:24px;font-weight:500;margin-bottom:12px}.library-loading{text-align:center;padding:60px 20px;color:var(--secondary-text-color, #666);font-size:18px}[data-theme=dark] .book-card{--card-bg-color: #1c1c1e}[data-theme=dark] .book-title{--text-color: #ffffff}[data-theme=dark] .book-author{--secondary-text-color: #adadad}[data-theme=dark] .book-last-read{--tertiary-text-color: #8a8a8a}@media (max-width: 768px){.library-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:16px}.library-title{font-size:24px;margin-bottom:16px}.book-title{font-size:14px}.book-author{font-size:12px}}@media (max-width: 480px){.library-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}.book-info{padding:8px}.book-progress-text{font-size:10px;padding:1px 6px}}html,body{margin:0;padding:0;min-height:100vh;background-color:var(--bg-primary)}:root{--bg-primary: #ffffff;--bg-secondary: #f5f5f7;--text-primary: #1d1d1f;--text-secondary: #86868b;--accent: #0071e3;--accent-hover: #0077ed;--shadow: 0 2px 8px rgba(0, 0, 0, .08);--highlight-word: #fa5252;--border-radius: 10px;--font-primary: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", system-ui, sans-serif;--font-mono: "SF Mono", ui-monospace, monospace;--transition: all .3s cubic-bezier(.25, .1, .25, 1)}[data-theme=dark]{--bg-primary: #1d1d1f;--bg-secondary: #2d2d2f;--text-primary: #f5f5f7;--text-secondary: #a1a1a6;--accent: #0a84ff;--accent-hover: #409cff;--shadow: 0 2px 8px rgba(0, 0, 0, .2);--highlight-word: #ff6b6b}.reader-container{min-height:100vh;background-color:var(--bg-primary);color:var(--text-primary);transition:var(--transition);padding:2rem 1rem;position:fixed;top:0;left:0;right:0;bottom:0;overflow-y:auto;font-family:var(--font-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;display:flex;flex-direction:column;align-items:center}.reader-view{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;margin:0 auto;max-width:800px;width:100%;height:100%}.text-display{display:flex;justify-content:center;align-items:center;min-height:300px;width:100%;background-color:var(--bg-secondary, #f5f5f7);color:var(--text-primary, #1d1d1f);border-radius:12px;margin:20px 0;padding:20px;box-shadow:0 4px 8px #0000001a;transition:all .3s ease}[data-theme=dark] .text-display{background-color:var(--bg-secondary, #2d2d2f);color:var(--text-primary, #f5f5f7);box-shadow:0 4px 8px #0003}.word-display{display:flex;justify-content:center;align-items:center;width:100%;text-align:center}.word{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:36px;margin:0 10px;transition:all .2s ease;color:var(--text-primary, #1d1d1f)}[data-theme=dark] .word{color:var(--text-primary, #f5f5f7)}.current-word{color:var(--accent, #0071e3)!important;font-weight:700;transform:scale(1.1)}[data-theme=dark] .current-word{color:var(--accent, #0a84ff)!important}.input-type-selector{display:flex;align-items:center;justify-content:space-between;width:100%;padding:10px 20px;background-color:var(--control-bg, rgba(255, 255, 255, .1));border-radius:10px;margin-bottom:20px}.input-type-select{background-color:var(--input-background, #ffffff);border:1px solid var(--input-border, #d1d1d6);border-radius:6px;padding:8px 10px;font-size:14px;color:var(--input-text, #333);outline:none;cursor:pointer;margin-left:10px}.library-button{position:absolute;top:80px;left:20px;background-color:var(--button-background, #0071e3);color:#fff;border:none;border-radius:6px;padding:8px 16px;font-size:14px;cursor:pointer;z-index:10}.word-display:has(.word:only-child) .word{white-space:normal;max-width:90%;-webkit-hyphens:auto;hyphens:auto}.controls{display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:100%;max-width:32rem;margin:0 auto}.btn{padding:.75rem 1.5rem;border-radius:980px;border:none;font-weight:500;cursor:pointer;transition:var(--transition);font-family:var(--font-primary);font-size:.95rem;letter-spacing:-.01em}.btn-primary{background-color:var(--accent);color:#fff}.btn-primary:hover{background-color:var(--accent-hover);transform:translateY(-1px)}.btn-secondary{background-color:var(--bg-secondary);color:var(--text-primary)}.btn-secondary:hover{background-color:var(--text-secondary);color:var(--bg-primary);transform:translateY(-1px)}.wpm-slider{width:100%;max-width:32rem;height:4px;background:var(--bg-secondary);border-radius:2px;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.wpm-slider::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--accent);cursor:pointer;transition:var(--transition);box-shadow:0 0 2px #0000001a}.wpm-slider::-webkit-slider-thumb:hover{background:var(--accent-hover);transform:scale(1.1)}.chapter-select{padding:.75rem 2.5rem .75rem 1rem;border-radius:var(--border-radius);background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid transparent;outline:none;font-family:var(--font-primary);font-size:.95rem;transition:var(--transition);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23131313%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:right 1rem top 50%;background-size:.65rem auto}.chapter-select:focus{border-color:var(--accent);box-shadow:0 0 0 2px #0071e333}.file-control-wrapper{margin:1rem 0;display:flex;justify-content:center;width:100%}@media (max-width: 640px){.file-control-wrapper{flex-direction:column;align-items:center;gap:1rem}.file-control{text-align:center}}.file-control{position:relative;overflow:hidden;display:inline-block;cursor:pointer}.file-input{position:absolute;font-size:100px;opacity:0;right:0;top:0;cursor:pointer}.file-input-label{display:inline-block;padding:8px 20px;background-color:var(--primary-color, #007bff);color:#fff;border-radius:4px;cursor:pointer;font-weight:500;transition:background-color .2s ease}.file-input-label:hover{background-color:var(--primary-color-hover, #0069d9)}[data-theme=dark] .file-input-label{background-color:var(--primary-color, #2196f3)}[data-theme=dark] .file-input-label:hover{background-color:var(--primary-color-hover, #1976d2)}.theme-toggle{position:fixed;bottom:2rem;right:2rem;width:3.5rem;height:3.5rem;border-radius:50%;background-color:var(--bg-secondary);color:var(--text-primary);border:none;cursor:pointer;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;transition:var(--transition);z-index:1000;font-size:1.25rem}.theme-toggle:hover{transform:scale(1.1);background-color:var(--accent);color:#fff}.progress-text{color:var(--text-secondary);font-size:.875rem;text-align:center;font-weight:500}.filename-display{color:var(--text-secondary);font-size:.875rem;text-align:center;font-weight:500;margin-top:.5rem}.control-buttons{display:flex;gap:1rem;justify-content:center;margin:1rem 0}.wpm-control{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;margin:1rem 0;width:100%}.wpm-control label{font-weight:500;font-size:.95rem;color:var(--text-secondary)}.chapter-control{display:flex;align-items:center;justify-content:center;gap:1rem;margin:1rem 0}.chapter-control label{font-weight:500;font-size:.95rem;color:var(--text-secondary)}.wpm-inputs{display:flex;flex-direction:column;align-items:center;gap:1rem;width:100%;max-width:32rem}.wpm-number{width:80px;padding:.5rem;border-radius:var(--border-radius);border:1px solid transparent;background:var(--bg-secondary);color:var(--text-primary);font-family:var(--font-primary);text-align:center;position:relative;transition:var(--transition)}.wpm-number:focus{border-color:var(--accent);outline:none}.wpm-number::-webkit-inner-spin-button,.wpm-number::-webkit-outer-spin-button{-webkit-appearance:none;height:1.5rem;background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;position:absolute;right:0;top:0;bottom:0;display:flex;flex-direction:column;justify-content:center;align-items:center;margin:0;border-left:1px solid var(--text-secondary)}.input-type-selector{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:2rem;width:100%;max-width:32rem}.input-type-select{padding:.75rem 2.5rem .75rem 1rem;border-radius:var(--border-radius);background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid transparent;outline:none;font-family:var(--font-primary);font-size:.95rem;cursor:pointer;transition:var(--transition);min-width:200px;box-shadow:var(--shadow);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23131313%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:right 1rem top 50%;background-size:.65rem auto}.input-type-select:hover{border-color:var(--accent)}.input-type-select:focus{border-color:var(--accent);box-shadow:0 0 0 2px #0071e333}.input-type-selector label{color:var(--text-secondary);font-weight:500}.text-input-form{width:calc(100% - 2rem);max-width:32rem;margin:0 auto;display:flex;flex-direction:column;gap:1rem}.text-input-area{width:100%;min-height:150px;padding:1rem;border-radius:var(--border-radius);background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid transparent;font-family:var(--font-primary);font-size:.95rem;resize:vertical;transition:var(--transition)}.text-input-area:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 2px #0071e333}.text-input-controls{display:flex;flex-direction:column;align-items:center;gap:1rem}.text-input-or{color:var(--text-secondary);margin:0;font-size:.9rem}@media (max-width: 640px){.reader-container{padding:1rem}.word-display{padding:1.5rem 1rem;min-height:6rem;margin-bottom:1rem;width:calc(100% - 1rem);max-width:32rem}.word.first-word{display:none}.word{opacity:.5}.current-word{opacity:1;color:var(--highlight-word);text-shadow:0 0 1px var(--highlight-word)}.controls,.input-type-selector{width:calc(100% - 1rem);margin-left:auto;margin-right:auto}.wpm-control,.chapter-control,.file-control{width:100%}.controls{padding:0 .5rem;gap:.75rem}.control-buttons{gap:.5rem}.btn{padding:.5rem 1rem;font-size:.9rem}.wpm-control,.chapter-control{flex-direction:column;gap:.5rem;margin:.5rem 0}.chapter-select{width:100%;padding:.75rem}.file-control{margin:.5rem 0}.file-input{font-size:.85rem}.file-input::-webkit-file-upload-button,.file-input::file-selector-button{padding:.5rem 1rem;font-size:.85rem}.theme-toggle{bottom:1rem;right:1rem;width:2.75rem;height:2.75rem}.progress-text,.filename-display{font-size:.8rem}.input-type-selector{flex-direction:column;gap:.5rem}.input-type-select{width:100%;max-width:200px}.text-input-form{width:calc(100% - 1rem)}.text-input-area{min-height:120px;padding:.75rem;width:100%;font-size:.9rem}.wpm-inputs{flex-direction:column;gap:.5rem}.wpm-number{width:100px}}@media (max-width: 380px){.current-word{font-size:clamp(1.25rem,3.5vw,2rem)}.controls{padding:0 .25rem}.btn{padding:.5rem .75rem;font-size:.85rem}}.view-toggle-btn{margin-left:10px;padding:6px 12px;background-color:#007aff;color:#fff;border:none;border-radius:6px;font-size:14px;cursor:pointer;transition:background-color .2s ease}.view-toggle-btn:hover{background-color:#0056b3}.library-upload-container{max-width:600px;margin:30px auto;padding:20px;background-color:var(--card-bg-color, #f5f5f7);border-radius:12px;text-align:center}.library-upload-container h3{font-size:18px;font-weight:500;margin-bottom:16px;color:var(--text-color)}[data-theme=dark] .library-upload-container{--card-bg-color: #1c1c1e}.storage-info{margin:1rem 0;padding:1rem;border-radius:8px;background-color:var(--card-bg-color, #f5f5f7);box-shadow:0 2px 6px #0000001a;max-width:500px;border-left:4px solid #ff5722;position:relative}.storage-info:before{content:"DEV";position:absolute;top:-8px;right:-8px;background-color:#ff5722;color:#fff;font-size:10px;font-weight:700;padding:2px 6px;border-radius:4px;box-shadow:0 1px 3px #0003}.storage-info-header{display:flex;justify-content:space-between;align-items:center;cursor:pointer;margin-bottom:.5rem}.storage-info-header h3{margin:0;font-size:1rem;font-weight:600}.storage-section{margin:1rem 0;padding-bottom:1rem;border-bottom:1px solid var(--border-color, #e0e0e0)}.storage-section h4{margin:0 0 .5rem;font-size:.9rem;font-weight:600}.storage-section p{margin:.3rem 0;font-size:.85rem}.storage-warning{color:var(--warning-color, #e65100);font-weight:500}.storage-usage-bar{width:100%;height:8px;background-color:var(--progress-bg-color, #e0e0e0);border-radius:4px;overflow:hidden;margin:.5rem 0}.storage-usage-fill{height:100%;background-color:var(--primary-color, #007aff);transition:width .3s ease}.storage-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}.storage-cleanup-btn,.storage-migrate-btn{padding:.4rem .8rem;border:none;border-radius:4px;font-size:.8rem;font-weight:500;cursor:pointer;transition:background-color .2s ease}.storage-cleanup-btn{background-color:var(--secondary-btn-color, #f0f0f0);color:var(--secondary-btn-text, #333)}.storage-cleanup-btn:hover{background-color:var(--secondary-btn-hover, #e0e0e0)}.storage-migrate-btn{background-color:var(--primary-color, #007aff);color:#fff}.storage-migrate-btn:hover{background-color:var(--primary-color-hover, #0056b3)}.storage-migrate-btn:disabled{background-color:var(--disabled-color, #cccccc);cursor:not-allowed}.storage-info-status{padding:.5rem;margin:.5rem 0;background-color:var(--info-bg-color, #e3f2fd);border-radius:4px;font-size:.85rem;color:var(--info-text-color, #0277bd)}.storage-info-simple{font-size:.8rem}.storage-info-simple p{margin:.2rem 0}[data-theme=dark] .storage-info{background-color:var(--card-bg-color, #1c1c1e);box-shadow:0 2px 6px #0003;border-left:4px solid #ff7043}[data-theme=dark] .storage-section{border-bottom-color:var(--border-color, #333)}[data-theme=dark] .storage-usage-bar{background-color:var(--progress-bg-color, #333)}[data-theme=dark] .storage-cleanup-btn{background-color:var(--secondary-btn-color, #333);color:var(--secondary-btn-text, #eee)}[data-theme=dark] .storage-cleanup-btn:hover{background-color:var(--secondary-btn-hover, #444)}[data-theme=dark] .storage-info-status{background-color:var(--info-bg-color, #102027);color:var(--info-text-color, #90caf9)}@media (max-width: 480px){.storage-info{padding:.5rem}.storage-actions{flex-direction:column}}.theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:none;background:transparent;cursor:pointer;font-size:18px;padding:0;transition:background-color .3s;margin-left:8px;position:relative;top:0;transform:translateY(0)}.theme-toggle:hover{background-color:#0000001a}[data-theme=dark] .theme-toggle:hover{background-color:#ffffff1a}.theme-toggle:focus{outline:none;box-shadow:0 0 0 2px var(--primary-color, #2374e1)}.theme-toggle span{display:flex;align-items:center;justify-content:center}.app-navigation{width:100%;background-color:var(--nav-background, rgba(245, 245, 247, .95));backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--nav-border, rgba(0, 0, 0, .1));position:sticky;top:0;z-index:1000;padding:15px 20px;margin-bottom:30px;display:flex;align-items:center;justify-content:space-between}.app-navigation .nav-links{display:flex;justify-content:center;list-style:none;margin:0;padding:0;gap:30px;flex-grow:1}.app-navigation .nav-controls{display:flex;align-items:center;justify-content:center;height:100%}.app-navigation li{margin:0}.app-navigation a{color:var(--nav-link, #0071e3);text-decoration:none;font-size:16px;font-weight:500;padding:8px 16px;border-radius:20px;transition:all .2s ease;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;letter-spacing:-.01em}.app-navigation a:hover{color:var(--nav-link-hover, #0077ed);background-color:var(--nav-hover-bg, rgba(0, 113, 227, .1))}.app-navigation a.active{color:var(--nav-active, white);background-color:var(--nav-active-bg, #0071e3);font-weight:600}[data-theme=dark] .app-navigation{background-color:var(--nav-background-dark, rgba(30, 30, 32, .95));border-bottom:1px solid var(--nav-border-dark, rgba(255, 255, 255, .1))}[data-theme=dark] .app-navigation a{color:var(--nav-link-dark, #0a84ff)}[data-theme=dark] .app-navigation a:hover{color:var(--nav-link-hover-dark, #48a2ff);background-color:var(--nav-hover-bg-dark, rgba(10, 132, 255, .2))}[data-theme=dark] .app-navigation a.active{color:#fff;background-color:var(--nav-active-bg-dark, #0a84ff)}@media (max-width: 640px){.app-navigation{flex-direction:column;gap:10px;padding:10px}.app-navigation .nav-links{gap:10px}.app-navigation .nav-controls{margin-top:5px;padding:5px 0}.app-navigation a{font-size:14px;padding:6px 12px}}footer{position:fixed;bottom:0;width:100%;height:50px;display:flex;justify-content:center;align-items:center}footer a{color:#0071e3;text-decoration:none;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif}footer p{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif}footer a:hover{color:#0077ed}.book-reader-container{display:flex;flex-direction:column;align-items:center;width:100%;max-width:800px;margin:0 auto}.book-reader{width:100%;display:flex;flex-direction:column;align-items:center}.book-title{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:24px;font-weight:600;margin-bottom:20px;color:var(--text-primary);text-align:center}.book-loading{display:flex;justify-content:center;align-items:center;min-height:300px;width:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:18px;color:var(--text-secondary)}.book-error{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:300px;width:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.book-error p{font-size:18px;color:#ff3b30;margin-bottom:20px}.back-to-library-btn{background-color:var(--button-background, #0071e3);color:#fff;font-weight:500;padding:10px 20px;font-size:16px;border-radius:20px;border:none;cursor:pointer;transition:all .2s ease}.back-to-library-btn:hover{background-color:var(--button-hover, #0077ed);transform:translateY(-1px)}.reader-empty-state{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:300px;width:100%;max-width:600px;margin:50px auto;background-color:var(--bg-secondary);border-radius:16px;padding:40px 20px;text-align:center;box-shadow:0 2px 10px #0000000d}.reader-empty-state h2{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:24px;font-weight:600;margin-bottom:15px;color:var(--text-primary)}.reader-empty-state p{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:16px;color:var(--text-secondary);margin-bottom:30px;max-width:400px}.go-to-library-btn{background-color:var(--button-background, #0071e3);color:#fff;font-weight:500;padding:10px 24px;font-size:16px;border-radius:20px;border:none;cursor:pointer;transition:all .2s ease}.go-to-library-btn:hover{background-color:var(--button-hover, #0077ed);transform:translateY(-1px);box-shadow:0 4px 12px #0071e34d}[data-theme=dark] .reader-empty-state{background-color:var(--bg-secondary);box-shadow:0 2px 10px #0003}@media (max-width: 640px){.book-title{font-size:20px;margin-bottom:15px}.reader-empty-state{padding:30px 20px}.reader-empty-state h2{font-size:20px}.reader-empty-state p{font-size:14px}.go-to-library-btn,.back-to-library-btn{padding:8px 20px;font-size:14px}}.page-container{display:flex;flex-direction:column;min-height:100vh;background-color:var(--background-color, #f5f7fa);color:var(--text-color, #333);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.reader-page,.library-page,.text-page{flex:1;display:flex;flex-direction:column;padding:0 20px 20px}.reader-page>div,.library-page>div,.text-page>div{flex:1}button{background-color:var(--button-background, #0071e3);color:var(--button-text, white);border:none;border-radius:6px;padding:8px 16px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease}button:hover{background-color:var(--button-hover, #0077ed)}:root{--bg-primary: #ffffff;--bg-secondary: #f5f5f7;--text-primary: #1d1d1f;--text-secondary: #86868b;--background-color: var(--bg-primary);--text-color: var(--text-primary);--accent: #0071e3;--accent-hover: #0077ed;--button-background: var(--accent, #0071e3);--button-text: white;--button-hover: var(--accent-hover, #0077ed);--nav-background: rgba(245, 245, 247, .95);--nav-border: rgba(0, 0, 0, .1);--nav-link: var(--accent, #0071e3);--nav-link-hover: var(--accent-hover, #0077ed);--nav-hover-bg: rgba(0, 113, 227, .1);--nav-active: white;--nav-active-bg: var(--accent, #0071e3);--input-background: #ffffff;--input-text: var(--text-primary, #1d1d1f);--input-border: #d1d1d6;--input-focus: var(--accent, #0071e3);--separator-color: #d1d1d6;--reader-bg: var(--bg-secondary);--reader-text: var(--text-primary)}[data-theme=dark]{--bg-primary: #1d1d1f;--bg-secondary: #2d2d2f;--text-primary: #f5f5f7;--text-secondary: #a1a1a6;--background-color: var(--bg-primary);--text-color: var(--text-primary);--accent: #0a84ff;--accent-hover: #409cff;--button-background: var(--accent, #0a84ff);--button-text: white;--button-hover: var(--accent-hover, #409cff);--nav-background: rgba(30, 30, 32, .95);--nav-border: rgba(255, 255, 255, .1);--nav-link: var(--accent, #0a84ff);--nav-link-hover: var(--accent-hover, #409cff);--nav-hover-bg: rgba(10, 132, 255, .2);--nav-active: white;--nav-active-bg: var(--accent, #0a84ff);--input-background: #2c2c2e;--input-text: var(--text-primary, #f5f5f7);--input-border: #3a3a3c;--input-focus: var(--accent, #0a84ff);--separator-color: #3a3a3c;--reader-bg: var(--bg-secondary);--reader-text: var(--text-primary)}