:root{--primary-blue: #3b82f6;--primary-blue-hover: #2563eb;--text-primary: #111827;--text-secondary: #6b7280;--text-muted: #9ca3af;--border-light: #e5e7eb;--border-medium: #d1d5db;--bg-white: #ffffff;--bg-light: #f9fafb;--bg-lighter: #f3f4f6;--bg-secondary: #f8fafc;--success-green: #10b981;--success-bg: #ecfdf5;--error-red: #ef4444;--error-bg: #fef2f2;--warning-yellow: #f59e0b;--warning-bg: #fffbeb;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--primary-color: #3b82f6;--primary-color-dark: #2563eb;--background-color: #ffffff;--surface-color: #ffffff;--border-color: #e5e7eb}.admin-section{padding:24px;max-width:100%;margin:0 auto;min-height:calc(100vh - 64px);background:var(--bg-white);color:var(--text-primary)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px;padding-bottom:16px;border-bottom:1px solid var(--border-light)}.section-header 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var(--border-medium);border-radius:var(--radius-md);font-size:14px;font-weight:500;background:var(--bg-white);color:var(--text-primary);cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);min-width:160px;position:relative;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpath d='M6 9l6 6 6-6'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right 14px center;background-size:18px;box-shadow:0 1px 3px #00000014}.filter-select:hover{border-color:var(--primary-blue);box-shadow:0 2px 8px #3b82f626;transform:translateY(-1px)}.filter-select:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 3px #3b82f61f,0 2px 8px #3b82f626;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 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var(--border-light)}.cover-image{width:100%;height:100%;object-fit:cover}.cover-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-lighter) 0%,var(--bg-light) 100%);color:var(--text-muted);font-size:24px}.book-details{flex:1;min-width:0}.book-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px;gap:12px}.book-title{margin:0;font-size:18px;font-weight:600;color:var(--text-primary);line-height:1.3;flex:1;min-width:0;word-wrap:break-word}.book-status{flex-shrink:0}.book-author{font-size:14px;color:var(--text-secondary);margin-bottom:8px;font-weight:500}.book-genre{display:flex;gap:12px;align-items:center;margin-bottom:12px;flex-wrap:wrap}.genre-tag{background:var(--primary-blue);color:#fff;padding:4px 8px;border-radius:4px;font-size:12px;font-weight:500}.pages-info{font-size:12px;color:var(--text-muted);background:var(--bg-lighter);padding:4px 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input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:6px;background:var(--border-light);border-radius:3px;border:none;outline:none;padding:0;margin:8px 0}.rating-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;background:var(--primary-blue);border-radius:50%;cursor:pointer;border:2px solid var(--bg-white);box-shadow:0 2px 4px #0000001a}.rating-group input[type=range]::-moz-range-thumb{width:18px;height:18px;background:var(--primary-blue);border-radius:50%;cursor:pointer;border:2px solid var(--bg-white);box-shadow:0 2px 4px #0000001a}.rating-group input[type=range]:focus::-webkit-slider-thumb{box-shadow:0 0 0 3px #2563eb33,0 2px 4px #0000001a}.rating-group input[type=range]:focus::-moz-range-thumb{box-shadow:0 0 0 3px #2563eb33,0 2px 4px #0000001a}.rating-group span{display:inline-block;min-width:20px;text-align:center;font-weight:600;color:var(--primary-blue);font-size:14px}.book-form-layout .form-group{margin-bottom:0}.book-form-layout .form-group label{font-weight:700;color:var(--text-primary);margin-bottom:4px;display:block;font-size:14px;text-transform:uppercase;letter-spacing:.5px}.book-form-layout .form-group input,.book-form-layout .form-group select,.book-form-layout .form-group textarea{width:100%;padding:12px 16px;border:2px solid var(--border-light);border-radius:var(--radius-md);font-size:14px;transition:all .2s ease;background:var(--bg-white)}.book-form-layout .form-group input:focus,.book-form-layout .form-group select:focus,.book-form-layout .form-group textarea:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 3px #2563eb1a}.book-form-layout .form-group textarea{resize:vertical;font-family:inherit;line-height:1.6;min-height:120px}.form-bottom-section .form-group input,.form-bottom-section .form-group select,.form-bottom-section .form-group textarea{width:100%;padding:12px 16px;border:1px solid var(--border-medium);border-radius:var(--radius-md);font-size:14px}.form-bottom-section .form-group textarea{resize:vertical;font-family:inherit;line-height:1.5;min-height:80px;height:80px}.form-bottom-section .form-group{background:var(--bg-white);padding:24px;border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:0 2px 8px #0000000d}.form-bottom-section .form-group label{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:16px;display:block;text-transform:uppercase;letter-spacing:.5px;border-bottom:2px solid var(--primary-blue);padding-bottom:8px}.file-preview{margin-top:8px;padding:8px;background:var(--bg-lighter);border-radius:var(--radius-sm);border:1px solid var(--border-light)}.download-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary-blue);text-decoration:none;font-size:12px;font-weight:500;padding:4px 8px;border-radius:var(--radius-sm);transition:all .2s ease}.download-link:hover{background:var(--primary-blue);color:#fff;text-decoration:none}.form-bottom-section .image-upload-container{min-height:60px!important;height:60px!important}.form-bottom-section .image-upload-area{min-height:40px!important;height:40px!important;font-size:11px!important;padding:4px!important}@media (max-width: 768px){.book-form-layout{grid-template-columns:1fr;gap:16px}.form-right-column{order:-1}.form-bottom-section{grid-template-columns:1fr;gap:16px}}.demo-section{background:var(--bg-white);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:24px;margin-bottom:24px}.demo-section h3{color:var(--text-primary);font-size:24px;font-weight:600;margin:0 0 8px}.demo-section p{color:var(--text-secondary);margin:0 0 24px}.demo-form{display:flex;flex-direction:column;gap:24px}.demo-uploads{display:grid;grid-template-columns:1fr 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