@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--primary: #A78842;--primary-dark: #8B6B2A;--primary-light: #D4B157;--secondary: #64748b;--accent: #926b27;--accent-hover: #eab308;--background: #ffffff;--card: #1e293b;--card-hover: #334155;--text: #1e293b;--text-light: #64748b;--text-lighter: #94a3b8;--border: #2a2a2a;--border-light: #e2e8f0;--success: #10b981;--error: #ef4444;--warning: #f59e0b;--gradient: linear-gradient(135deg, #7c6531 0%, #9d8a5d 100%);--gradient-dark: linear-gradient(135deg, #A78842 0%, #e2c581 100%);--shadow: 0 10px 25px -5px rgba(0, 0, 0, .1);--shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, .15);--glow: 0 0 20px rgba(167, 136, 66, .3)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--background);color:var(--text);line-height:1.6;min-height:100vh}#root{width:100%;min-height:100vh}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{transform:translate(-100%)}to{transform:translate(0)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes progressAnimation{0%{transform:translate(-100%)}50%{transform:translate(0)}to{transform:translate(100%)}}@keyframes buttonSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .6s ease-out}.slide-in{animation:slideIn .5s ease-out}.pulse{animation:pulse 2s infinite}.float{animation:float 3s ease-in-out infinite}.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background-image:url(/assets/FondoBiblioteca-STu1JGWz.png);background-size:cover;background-position:center;padding:20px;position:relative;overflow:hidden}.login-container:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(167,136,66,.1) 0%,transparent 70%);animation:float 6s ease-in-out infinite}.login-card{background:#ffffff1a;-webkit-backdrop-filter:blur(30px) saturate(100%);backdrop-filter:blur(30px) saturate(100%);padding:3rem;border-radius:24px;box-shadow:0 8px 32px #0000005c,inset 0 1px #ffffff1a;width:100%;max-width:440px;position:relative;z-index:2;animation:fadeIn .8s ease-out}.login-header{text-align:center;margin-bottom:2.5rem}.login-header h4{color:#fff;font-size:1.5rem;font-weight:700;margin-bottom:.5rem}.login-header h5{color:#fff;font-size:1rem;font-weight:700;margin-bottom:.5rem}.login-header p{color:#fffc;font-size:1.1rem}.login-header span{color:var(--primary);font-size:.9rem}.form-group label{display:block;margin-bottom:.5rem;color:#ffffffe6;font-weight:500;font-size:.95rem;align-content:start}.form-group input,.form-group textarea{width:100%;padding:14px 16px;background:#0000001a;border:0px solid rgba(255,255,255,.9);border-radius:12px;font-size:1rem;color:#333;transition:all .3s ease;font-family:Arial}.form-group input::placeholder{color:#0009}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:1px solid var(--primary);box-shadow:var(--glow);background:#fff}.role-selector{display:flex;gap:12px;margin-top:8px}.role-btn{flex:1;padding:14px;border:2px solid rgba(255,255,255,.3);background:#ffffff1a;border-radius:12px;cursor:pointer;transition:all .3s ease;color:#fffc;font-weight:500}.role-btn:hover{border-color:var(--primary-light);transform:translateY(-2px)}.role-btn.active{border-color:var(--primary);background:var(--gradient);color:#fff;box-shadow:var(--glow)}.login-btn{width:100%;padding:16px;background:var(--gradient);color:#fff;border:none;border-radius:12px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:1rem}.login-btn:hover{background:var(--gradient-dark);transform:translateY(-2px);box-shadow:var(--shadow)}.header-content{max-width:1400px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center}.header-left{display:flex;align-items:center;gap:1rem;flex:1}.header-logo{width:80px;height:80px;object-fit:contain}.header-title{text-align:left}.header-title h1{font-size:1.8rem;font-weight:700;background:#a78842;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0}.header-title p{color:#a78842}.header-actions{display:flex;gap:1rem;align-items:center}.dashboard{min-height:100vh;background:var(--background);width:100%}.dashboard-header{background:#010101f2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:1.5rem 0;position:sticky;top:0;z-index:100;box-shadow:var(--shadow);width:100%}.dashboard-header.admin{background:#010101f2}.header-content h1{font-size:1.8rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.dashboard-header.admin .header-content h1{color:#977d40;-webkit-text-fill-color:#977d40}.primary-btn{background:var(--gradient);color:#fff;border:none;padding:12px 24px;border-radius:12px;cursor:pointer;font-weight:600;transition:all .3s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px}.primary-btn:hover{background:var(--gradient-dark);transform:translateY(-2px);box-shadow:var(--shadow)}.logout-btn{background:transparent;color:var(--text-light);border:1px solid var(--border);padding:10px;border-radius:12px;cursor:pointer;font-weight:500;transition:all .3s ease;display:flex;align-items:center;justify-content:center;width:44px;height:44px}.logout-btn:hover{border-color:var(--error);color:var(--error);transform:translateY(-2px);box-shadow:0 4px 12px #ef444433}.logout-btn svg{width:18px;height:18px}.logout-text{font-size:.9rem;display:none}.tabs-section{padding:0 1rem;max-width:1400px;margin:2rem auto 0}.tabs-container{display:flex;gap:0;background:#fff;border-radius:16px 16px 0 0;padding:.5rem;border-bottom:none;box-shadow:var(--shadow)}.tab-btn{flex:1;padding:1rem 1.5rem;background:transparent;border:none;border-radius:12px;cursor:pointer;font-weight:500;color:var(--text-light);transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:8px;position:relative}.tab-btn:hover{background:#a788421a;color:var(--primary);transform:translateY(-2px)}.tab-btn.active{background:var(--gradient);color:#fff;box-shadow:var(--shadow)}.tab-icon{font-size:1.1rem}.tab-text{font-size:.95rem}.favorites-badge{position:absolute;top:-8px;right:-8px;background:var(--error);color:#fff;border-radius:50%;width:20px;height:20px;font-size:.7rem;display:flex;align-items:center;justify-content:center;font-weight:600}.search-section{width:100%;max-width:none;margin:0 auto;padding:2rem 2rem 1rem}.search-controls{display:flex;flex-direction:column;gap:8px;flex:2;min-width:300px}.search-container{position:relative;max-width:600px;margin:0 auto;width:100%}.search-input{width:100%;padding:16px 50px 16px 20px;background:#fff;border:1px solid var(--border-light);border-radius:16px;font-size:1.1rem;color:var(--text);transition:all .3s ease;box-shadow:var(--shadow)}.search-input::placeholder{color:var(--text-lighter)}.main-content{width:100%;max-width:none;margin:0;padding:2rem}.stats-section{width:100%;max-width:none;margin:0 auto;padding:2rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.stat-card{background:#fff;padding:2rem;border-radius:16px;text-align:center;border:1px solid var(--border);transition:all .3s ease;box-shadow:var(--shadow)}.stat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--primary)}.stat-number{font-size:2.5rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-top:.5rem}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:2rem;width:100%}.book-card{background:#fff;border-radius:20px;overflow:hidden;border:1px solid var(--border);transition:all .3s ease;position:relative;box-shadow:var(--shadow);display:flex;flex-direction:column;min-height:500px}.book-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--primary)}.book-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient)}.book-cover{height:240px;overflow:hidden;position:relative;flex-shrink:0}.book-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.book-card:hover .book-cover img{transform:scale(1.05)}.favorite-btn{position:absolute;top:12px;right:12px;background:#000000b3;border:none;border-radius:50%;width:40px;height:40px;cursor:pointer;font-size:1.2rem;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center}.favorite-btn:hover{background:#000000e6;transform:scale(1.1)}.favorite-btn.active{background:#ef4444e6;animation:pulse .5s ease}.book-info{padding:1.5rem;display:flex;flex-direction:column;flex:1;min-height:260px}.book-info h3{font-size:1.3rem;font-weight:600;margin-bottom:.5rem;color:var(--text);line-height:1.4;flex-shrink:0}.book-author{color:var(--accent);font-weight:500;margin-bottom:.75rem;font-size:.95rem;flex-shrink:0}.book-description{color:var(--text-light);font-size:.9rem;line-height:1.5;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;flex:1;min-height:1rem}.book-category{color:var(--text-light);font-size:.8rem;line-height:1.5;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;flex:1;min-height:1rem}.book-subcategory{color:var(--text-light);font-size:.7rem;line-height:1.5;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;flex:1;min-height:1rem}.book-actions{display:flex;gap:.5rem;flex-shrink:0}.read-btn{flex:1;background:var(--gradient);color:#fff;border:none;padding:12px;border-radius:12px;cursor:pointer;font-weight:600;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:8px}.read-btn:hover{background:var(--gradient-dark);transform:translateY(-2px);box-shadow:var(--shadow)}.books-table{background:#fff;border-radius:20px;border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow);width:100%}.table-header{padding:1.5rem 2rem;border-bottom:1px solid var(--border);background:var(--gradient);color:#fff}.table-header h3{font-size:1.4rem;font-weight:600}.table-content{max-height:600px;overflow-y:auto}.table-row{display:flex;align-items:center;padding:1.5rem 2rem;border-bottom:1px solid var(--border);transition:all .3s ease}.table-row:hover{background:#a788420d}.table-row:last-child{border-bottom:none}.book-cover-small{width:60px;height:80px;border-radius:8px;overflow:hidden;margin-right:1.5rem;box-shadow:var(--shadow)}.book-cover-small img{width:100%;height:100%;object-fit:cover}.book-details{flex:1}.book-details h4{font-size:1.1rem;font-weight:600;margin-bottom:.25rem;color:var(--text)}.book-details p{color:var(--text-light);font-size:.9rem}.upload-date{color:var(--text-lighter);font-size:.85rem}.button-edit-trash{background:transparent;color:var(--text-light);border:transparent;padding:10px;border-radius:12px;cursor:pointer;font-weight:500;transition:all .3s ease;display:flex;align-items:center;justify-content:center;width:44px;height:44px}.modal-overlay{position:fixed;inset:0;background:#000c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:2rem;animation:fadeIn .3s ease-out;overflow-y:auto}.upload-modal{background:#fff;border-radius:24px;width:90%;max-width:600px;max-height:90vh;display:flex;flex-direction:column;border:1px solid var(--border-light);box-shadow:var(--shadow-lg);animation:fadeIn .4s ease-out;overflow:hidden}.modal-header{padding:1.5rem 2rem;border-bottom:1px solid var(--border-light);display:flex;justify-content:space-between;align-items:center;background:#fff;flex-shrink:0}.modal-header h3{font-size:1.4rem;font-weight:600;color:var(--text);margin:0}.close-btn{background:transparent;border:none;color:var(--text-light);font-size:1.5rem;cursor:pointer;padding:4px;border-radius:6px;transition:all .3s ease;width:32px;height:32px;display:flex;align-items:center;justify-content:center}.close-btn:hover{color:var(--error);background:#ef44441a}.upload-form{padding:0;display:flex;flex-direction:column;flex:1;overflow:hidden}.form-content{flex:1;overflow-y:auto;padding:2rem;max-height:calc(90vh - 140px)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;color:var(--text);font-weight:500;font-size:.95rem}.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;background:#fff;border:1px solid var(--border-light);border-radius:12px;font-size:1rem;color:var(--text);transition:all .3s ease}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:var(--glow)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem}.search-input-container{position:relative;margin-bottom:8px}.search-input{width:100%;padding:12px 16px;background:#fff;border:1px solid var(--border-light);border-radius:12px;font-size:1rem;color:var(--text);transition:all .3s ease}.search-input:focus{outline:none;border-color:var(--primary);box-shadow:var(--glow)}.clear-search-btn{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;font-size:16px;cursor:pointer;color:var(--text-light);padding:4px;width:24px;height:24px;display:flex;align-items:center;justify-content:center}.clear-search-btn:hover{color:var(--error)}.dewey-results-dropdown{position:absolute;top:100%;left:0;right:0;background:#fff;border:1px solid var(--border-light);border-radius:12px;max-height:200px;overflow-y:auto;z-index:1001;box-shadow:var(--shadow-lg);margin-top:4px}.dewey-result-item{padding:12px 16px;border-bottom:1px solid var(--border-light);cursor:pointer;transition:all .3s ease}.dewey-result-item:hover{background-color:#a788421a}.dewey-result-item:last-child{border-bottom:none}.dewey-main{display:flex;align-items:center;gap:12px;margin-bottom:4px}.dewey-code{font-weight:400;font-size:small;min-width:80px;padding:2px 6px;border-radius:3px}.dewey-name{flex:1;font-weight:500}.dewey-subcategory{display:flex;align-items:center;gap:8px;margin-left:92px;font-size:.9em;color:#666}.subcode{background:#f8f9fa;padding:1px 4px;border-radius:2px}.selected-category-fields{margin:20px 0;padding:20px;background:#f8f9fa;border-radius:12px;border:1px solid var(--border-light)}.selected-category-fields h4{margin:0 0 16px;color:var(--text);font-size:1.1rem;font-weight:600}.readonly-field{background-color:#f5f5f5;cursor:not-allowed;color:var(--text-light);border:1px solid var(--border-light)}.form-actions{display:flex;gap:1rem;justify-content:flex-end;padding:1.5rem 2rem;border-top:1px solid var(--border-light);background:#fff;flex-shrink:0;margin-top:auto}.form-actions button{padding:12px 24px;border:2px solid var(--border-light);background:transparent;color:var(--text-light);border-radius:12px;cursor:pointer;font-weight:500;transition:all .3s ease;min-width:100px}.form-actions button:hover{border-color:var(--primary);color:var(--primary)}.form-actions button.primary-btn{background:var(--gradient);color:#fff;border:none}.form-actions button.primary-btn:hover{background:var(--gradient-dark);transform:translateY(-2px);box-shadow:var(--shadow)}.form-content::-webkit-scrollbar{width:8px}.form-content::-webkit-scrollbar-track{background:#f1f1f1;border-radius:4px}.form-content::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:4px}.form-content::-webkit-scrollbar-thumb:hover{background:#a8a8a8}.form-content{scrollbar-width:thin;scrollbar-color:#c1c1c1 #f1f1f1}.empty-state{text-align:center;padding:4rem 2rem;color:var(--text-light)}.empty-icon{font-size:4rem;margin-bottom:1rem;opacity:.5;animation:float 3s ease-in-out infinite}.empty-state h3{font-size:1.5rem;margin-bottom:1rem;color:var(--text)}.empty-state p{color:var(--text-light)}.loading-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--background)}.loading-spinner{font-size:3rem;margin-bottom:1rem;animation:float 2s ease-in-out infinite}.login-logo{text-align:center;margin-bottom:1.5rem}.logo-img{width:100px;height:100px;object-fit:cover;transition:transform .3s ease}.logo-img:hover{transform:scale(1.05)}.badge{display:inline-block;padding:4px 10px;border-radius:12px;font-size:.75rem;font-weight:500;text-align:center;margin:2px}.badge-primary{background-color:#e3f2fd;color:#1976d2;border:1px solid #bbdefb}.badge-secondary{background-color:#f3e5f5;color:#7b1fa2;border:1px solid #e1bee7}.badge-success{background-color:#e8f5e8;color:#2e7d32;border:1px solid #c8e6c9}.badge-danger{background-color:#ffebee;color:#c62828;border:1px solid #ffcdd2}.badge-warning{background-color:#fff8e1;color:#f57f17;border:1px solid #ffecb3}.badge-info{background-color:#e0f2f1;color:#00695c;border:1px solid #b2dfdb}.pdf-modal{background:#fff;border-radius:24px;width:95%;max-width:1200px;height:95vh;max-height:900px;display:flex;flex-direction:column;border:1px solid var(--border-light);box-shadow:var(--shadow-lg);animation:slideUp .3s ease-out;overflow:hidden}.pdf-modal .modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;background:#fff;border-bottom:1px solid var(--border-light);flex-shrink:0;gap:20px;flex-wrap:wrap}.pdf-modal .modal-title{flex:1;min-width:200px}.pdf-modal .modal-title h3{margin:0;font-size:1.4rem;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pdf-modal .book-author{margin:5px 0 0;color:var(--text-light);font-size:.9rem}.pdf-modal .search-controls{display:flex;flex-direction:column;gap:8px;flex:2;min-width:300px}.pdf-modal .search-input-container{display:flex;align-items:center;gap:8px;position:relative}.pdf-modal .search-input{flex:1;padding:12px 16px;background:#fff;border:1px solid var(--border-light);border-radius:12px;font-size:1rem;color:var(--text);transition:all .3s ease}.pdf-modal .search-input:focus{outline:none;border-color:var(--primary);box-shadow:var(--glow)}.pdf-modal .voice-search-btn{background:#28a745;color:#fff;border:none;border-radius:8px;padding:10px 12px;cursor:pointer;font-size:14px;transition:all .3s ease}.pdf-modal .voice-search-btn.listening{background:#dc3545;animation:pulse 1.5s infinite}.pdf-modal .voice-search-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.pdf-modal .clear-search-btn{background:#6c757d;color:#fff;border:none;border-radius:8px;padding:10px 12px;cursor:pointer;font-size:14px;transition:all .3s ease}.pdf-modal .clear-search-btn:hover{background:#5a6268;transform:translateY(-2px)}.pdf-modal .search-results-info{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-light)}.pdf-modal .nav-match-btn{background:none;border:1px solid var(--border-light);border-radius:6px;padding:4px 8px;cursor:pointer;font-size:12px;transition:all .3s ease}.pdf-modal .nav-match-btn:hover{border-color:var(--primary);background:#a788421a}.pdf-modal .modal-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.pdf-modal .voice-controls,.pdf-modal .zoom-controls,.pdf-modal .page-controls{display:flex;align-items:center;gap:6px;background:#fff;padding:8px 12px;border-radius:12px;border:1px solid var(--border-light)}.pdf-modal .control-btn{background:#fff;border:1px solid var(--border-light);border-radius:8px;padding:8px 12px;cursor:pointer;font-size:14px;transition:all .3s ease;display:flex;align-items:center;justify-content:center}.pdf-modal .control-btn:disabled{opacity:.5;cursor:not-allowed}.pdf-modal .control-btn:hover:not(:disabled){border-color:var(--primary);background:#a788421a;transform:translateY(-2px)}.pdf-modal .zoom-level,.pdf-modal .page-info{font-size:12px;font-weight:500;color:var(--text);min-width:60px;text-align:center}.pdf-modal .close-btn{background:#dc3545;color:#fff;border:none;border-radius:8px;padding:10px 16px;cursor:pointer;font-size:16px;font-weight:600;transition:all .3s ease;display:flex;align-items:center;justify-content:center}.pdf-modal .close-btn:hover{background:#c82333;transform:translateY(-2px);box-shadow:var(--shadow)}.pdf-viewer-container{flex:1;overflow:auto;display:flex;justify-content:center;align-items:flex-start;padding:20px;background:#f5f5f5;position:relative}.pdf-loading,.pdf-error{display:flex;flex-direction:column;justify-content:center;align-items:center;height:200px;gap:15px;color:var(--text-light)}.pdf-loading .loading-spinner{border:4px solid #f3f3f3;border-top:4px solid var(--primary);border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite}.pdf-error .error-icon{font-size:3rem;margin-bottom:1rem}.btn-primary{background:var(--gradient);color:#fff;border:none;padding:12px 24px;border-radius:12px;cursor:pointer;font-weight:600;transition:all .3s ease}.btn-primary:hover{background:var(--gradient-dark);transform:translateY(-2px);box-shadow:var(--shadow)}.voice-listening-indicator{position:absolute;top:20px;right:20px;background:#dc3545;color:#fff;padding:12px 16px;border-radius:12px;display:flex;align-items:center;gap:10px;z-index:10;box-shadow:var(--shadow);animation:fadeIn .3s ease-out}.voice-listening-indicator .pulse-animation{width:12px;height:12px;background:#fff;border-radius:50%;animation:pulse 1.5s infinite}.page-loading{display:flex;justify-content:center;align-items:center;height:200px;color:var(--text-light)}.pdf-controls{display:flex;justify-content:center;align-items:center;gap:10px;padding:10px;background:#f8f9fa;border-bottom:1px solid #e9ecef}.control-btn{background:#fff;border:1px solid #dee2e6;border-radius:6px;padding:6px 12px;cursor:pointer;font-size:.85rem;transition:all .2s ease}.control-btn:hover{background:#e9ecef;border-color:var(--primary)}.uploading-overlay{position:fixed;inset:0;background:#000c;display:flex;justify-content:center;align-items:center;z-index:1000}.uploading-content{background:#fff;padding:2rem;border-radius:12px;text-align:center;max-width:400px;width:90%;box-shadow:0 10px 30px #0000004d}.loading-spinner{width:50px;height:50px;border:4px solid #f3f3f3;border-top:4px solid #007bff;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}.progress-bar{width:100%;height:6px;background:#f0f0f0;border-radius:3px;margin:1rem 0;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,#007bff,#0056b3);border-radius:3px;animation:progressAnimation 2s ease-in-out infinite}.uploading-note{font-size:.875rem;color:#666;margin-top:.5rem}.button-spinner{display:inline-block;width:16px;height:16px;border:2px solid transparent;border-top:2px solid currentColor;border-radius:50%;animation:buttonSpin .8s linear 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button{width:100%}.dewey-main{flex-direction:column;align-items:flex-start;gap:4px}.dewey-subcategory{margin-left:0;margin-top:4px}.pdf-modal{width:100%;height:100vh;max-height:none;border-radius:0;margin:0}.pdf-modal .modal-header{padding:1rem 1.5rem;flex-direction:column;gap:15px}.pdf-modal .modal-title{min-width:auto;text-align:center}.pdf-modal .modal-title h3{font-size:1.2rem;white-space:normal}.pdf-modal .search-controls{min-width:auto;width:100%}.pdf-modal .modal-controls{justify-content:center;width:100%}.pdf-modal .voice-controls,.pdf-modal .zoom-controls,.pdf-modal .page-controls{padding:6px 10px}.pdf-modal .control-btn{padding:6px 10px;font-size:12px}.pdf-viewer-container{padding:15px}.voice-listening-indicator{top:10px;right:10px;left:10px;justify-content:center}}@media(max-width:480px){.login-header h1{font-size:2rem}.role-selector{flex-direction:column}.header-actions{flex-direction:column;width:100%}.primary-btn,.logout-btn{width:100%;justify-content:center}.tabs-section{padding:0 1rem}.tab-text{font-size:.85rem}.book-card{min-height:420px}.book-info{min-height:200px}.upload-modal{width:100%;border-radius:16px 16px 0 0;max-height:95vh}.modal-overlay{padding:0;align-items:flex-end}.form-content{padding:1rem;max-height:calc(95vh - 120px)}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid #e5e5e5;background:#f8f9fa;border-radius:12px 12px 0 0;gap:20px;flex-wrap:wrap}.modal-header h3{font-size:1.2rem}.modal-title{flex:1;min-width:200px}.modal-title h3{margin:0;font-size:1.25rem;color:#333}.form-actions{padding:1rem 1.25rem}.pdf-modal .modal-header{padding:.75rem 1rem}.pdf-modal .modal-title h3{font-size:1.1rem}.pdf-modal .search-input{padding:10px 12px;font-size:.9rem}.pdf-modal .voice-search-btn,.pdf-modal .clear-search-btn{padding:8px 10px}.pdf-modal .modal-controls{gap:5px}.pdf-modal .voice-controls,.pdf-modal .zoom-controls,.pdf-modal .page-controls{gap:4px;padding:4px 8px}.pdf-modal .control-btn{padding:4px 8px;font-size:11px}.pdf-modal .zoom-level,.pdf-modal .page-info{font-size:10px;min-width:50px}.pdf-modal .close-btn{padding:8px 12px;font-size:14px}.pdf-viewer-container{padding:10px}}.pdf-canvas-container{display:flex;justify-content:center;align-items:flex-start;width:100%;height:100%;overflow:auto;background:#f5f5f5;padding:20px}.pdf-canvas-container canvas{box-shadow:0 4px 20px #0000001a;border:1px solid #e0e0e0;background:#fff}.voice-controls{display:flex;gap:8px}.control-btn{background:#fff;border:1px solid var(--border-light);border-radius:8px;padding:8px 12px;cursor:pointer;font-size:14px;transition:all .3s 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h4{margin:0;font-size:.9rem;color:var(--text)}.clear-btn{background:none;border:none;color:var(--text-light);cursor:pointer;padding:4px;border-radius:4px}.clear-btn:hover{color:var(--error);background:#ef44441a}.content-preview{padding:12px 16px;font-size:.8rem;line-height:1.4;color:var(--text-light);max-height:120px;overflow-y:auto}.more-text{color:var(--primary);font-style:italic}.control-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.control-btn:disabled:hover{transform:none;border-color:var(--border-light);background:#fff}.heart{font-size:1rem;cursor:pointer;transition:transform .2s}.heart.beating{animation:heartbeat .7s infinite}@keyframes heartbeat{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}