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#ffffff;--bg-sidebar: #1e293b;--text-primary: #1e293b;--text-secondary: #64748b;--text-light: #f1f5f9;--success-color: #10b981;--error-color: #ef4444;--warning-color: #f59e0b;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--container-width: 1200px;--header-height: 70px;--border-radius-sm: .375rem;--border-radius-md: .75rem;--border-radius-lg: 1rem;--border-radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--transition-fast: .15s ease-in-out;--transition-normal: .3s ease-in-out}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.text-primary{color:var(--primary-color)}.text-secondary{color:var(--text-secondary)}.text-accent{color:var(--accent-color)}.text-error{color:var(--error-color)}.text-success{color:var(--success-color)}.font-bold{font-weight:700}.font-semibold{font-weight:600}.font-medium{font-weight:500}.w-full{width:100%}.h-full{height:100%}.cursor-pointer{cursor:pointer}.hidden{display:none}.block{display:block}.inline-block{display:inline-block}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1.25rem;font-size:.95rem;font-weight:500;border-radius:var(--border-radius-md);border:none;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;line-height:1}.btn:disabled{opacity:.6;cursor:not-allowed;pointer-events:none}.btn-primary{background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));color:#fff;box-shadow:0 4px 6px -1px #4f46e533}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 8px -1px #4f46e54d}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:#fff;color:var(--text-primary);border:1px solid #e2e8f0}.btn-secondary:hover{background:var(--bg-color);border-color:#cbd5e1}.btn-accent{background:linear-gradient(135deg,var(--secondary-color),var(--secondary-hover));color:#fff}.btn-accent:hover{filter:brightness(1.1)}.btn-danger{background:#fee2e2;color:var(--error-color)}.btn-danger:hover{background:var(--error-color);color:#fff}.btn-icon{padding:.5rem;border-radius:var(--border-radius-full);aspect-ratio:1;background:transparent;color:var(--text-secondary)}.btn-icon:hover{background:#0000000d;color:var(--primary-color)}.btn-sm{padding:.375rem .75rem;font-size:.875rem}.btn-lg{padding:.75rem 1.5rem;font-size:1.125rem}.btn-block{width:100%}.form-group{margin-bottom:1.5rem}.form-label{display:block;font-weight:500;margin-bottom:.75rem;color:var(--text-primary)}.form-control{width:100%;padding:.75rem 1rem;font-size:1rem;font-family:inherit;color:var(--text-primary);background:#fff;border:2px solid #e2e8f0;border-radius:var(--border-radius-md);transition:all 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.form-container{width:100%;max-width:700px;background:#fff;padding:2.5rem;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg)}.book-info-card,.student-info-card{background:#f8fafc;padding:1.5rem;border-radius:var(--border-radius-md);margin-bottom:1.5rem;border:1px solid #e2e8f0}.book-info-card h3,.student-info-card h3{margin-bottom:1rem;color:var(--primary-color);font-size:1.1rem;border-bottom:1px solid #e2e8f0;padding-bottom:.5rem}.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.info-item{display:flex;flex-direction:column}.info-label{font-size:.8rem;color:var(--text-secondary);text-transform:uppercase;font-weight:600}.info-value{font-size:1rem;color:var(--text-primary);font-weight:500}.borrow-terms{background:#ecfdf5;border:1px solid #d1fae5;border-radius:var(--border-radius-md);padding:1rem;margin-bottom:2rem}.borrow-terms h3{color:#047857;font-size:1rem;margin-bottom:.5rem}.borrow-terms ul{padding-left:1.5rem;margin:0;color:#065f46;font-size:.9rem}.form-actions{display:flex;flex-direction:column;gap:1rem}@media (min-width: 640px){.form-actions{flex-direction:row}}.auth-prompt-container{text-align:center;max-width:500px;margin:4rem auto;padding:3rem;background:#fff;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-xl)}.auth-prompt-icon{font-size:4rem;margin-bottom:1.5rem}.auth-prompt-actions{display:flex;flex-direction:column;gap:1rem;margin-top:2rem}.card{background:var(--bg-card);border-radius:var(--border-radius-lg);box-shadow:0 4px 6px -1px #0000000d;border:1px solid rgba(255,255,255,.5);transition:all var(--transition-normal);overflow:hidden}.card-glass{background:#fffc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.3)}.card:hover{transform:translateY(-4px);box-shadow:0 12px 20px -5px #0000001a}.card-header{padding:var(--spacing-md);border-bottom:1px solid #f1f5f9;display:flex;align-items:center;justify-content:space-between}.card-title{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin:0}.card-body{padding:var(--spacing-md)}.card-footer{padding:var(--spacing-md);background:#f8fafc;border-top:1px solid #f1f5f9;display:flex;justify-content:flex-end;gap:var(--spacing-sm)}.book-card{display:flex;flex-direction:column;height:100%;background:#fff;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md);transition:transform var(--transition-fast),box-shadow var(--transition-fast);border:1px solid #e2e8f0;overflow:hidden}.book-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-xl);border-color:var(--primary-color)}.book-card-header{padding:var(--spacing-md);display:flex;justify-content:space-between;align-items:flex-start;border-bottom:1px solid #f1f5f9;background:#f8fafc}.book-card-header h3{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin:0;line-height:1.3}.book-author,.book-card .author{padding:0 var(--spacing-md);margin-top:var(--spacing-sm);color:var(--text-secondary);font-size:.9rem;font-weight:500;font-style:italic}.book-description{padding:0 var(--spacing-md);margin:var(--spacing-sm) 0 var(--spacing-md);color:var(--text-secondary);font-size:.95rem;line-height:1.5;flex:1}.book-card-footer{padding:var(--spacing-md);background:#fff;border-top:1px solid #f1f5f9;display:flex;justify-content:space-between;align-items:center}.book-copies{font-size:.85rem;font-weight:600;color:var(--text-secondary)}.book-card:hover .btn-view{background-color:var(--primary-hover)}.table-container{overflow-x:auto;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-sm);background:#fff}.table{width:100%;border-collapse:collapse;white-space:nowrap}.table th{background:#f8fafc;color:var(--text-secondary);font-weight:600;text-align:left;padding:1rem;font-size:.875rem;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid #e2e8f0}.table td{padding:1rem;border-bottom:1px solid #f1f5f9;color:var(--text-primary);vertical-align:middle}.table tr:last-child td{border-bottom:none}.table tr:hover td{background-color:#f8fafc}.badge{display:inline-flex;align-items:center;padding:.25rem .75rem;border-radius:var(--border-radius-full);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}.badge-success{background:#d1fae5;color:#059669}.badge-warning{background:#fef3c7;color:#d97706}.badge-error{background:#fee2e2;color:#dc2626}.badge-info{background:#e0f2fe;color:#0284c7}.badge-neutral{background:#f1f5f9;color:#475569}:root{font-family:Outfit,sans-serif;line-height:1.5;font-weight:400;color:var(--text-primary);background-color:var(--bg-color);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;padding:0;min-height:100vh;background-color:var(--bg-color);background-image:radial-gradient(at 0% 0%,rgba(99,102,241,.1) 0px,transparent 50%),radial-gradient(at 100% 0%,rgba(168,85,247,.1) 0px,transparent 50%)}h1,h2,h3,h4,h5,h6{font-family:Outfit,sans-serif;color:var(--text-primary);margin-top:0}h1{font-size:2.5rem;font-weight:700}h2{font-size:2rem;font-weight:600}h3{font-size:1.5rem;font-weight:600}a{color:var(--primary-color);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--primary-hover)}*{box-sizing:border-box}