.book-card{background:#fff;border-radius:10px;padding:10px;text-align:center;box-shadow:0 3px 10px #0000000d;transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column;justify-content:space-between;max-width:180px;margin:auto}.book-card:hover{transform:translateY(-3px);box-shadow:0 6px 15px #00000014}.book-card img{width:100%;height:300px;object-fit:cover;border-radius:6px;margin-bottom:8px}.book-card h3{font-size:.9rem;font-weight:600;color:#1f2937;margin:6px 0 2px}.book-card p{margin:2px 0;color:#6b7280;font-size:.8rem}.book-card .price{font-size:.9rem;font-weight:700;color:#2563eb;margin:4px 0}.book-card button{background:#2563eb;color:#fff;padding:6px 8px;font-size:.8rem;border:none;border-radius:6px;cursor:pointer}.book-card button:hover{background:#445481}.search-bar{text-align:center;margin:15px 0}.search-bar input{padding:8px;width:250px;border-radius:5px;border:1px solid #ccc}.filter-container{text-align:center;margin-bottom:15px}.filter-container select{padding:8px;border-radius:5px;border:1px solid #ccc}.book-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;padding:20px;justify-items:center}.header{background:#193a9c;color:#f7f8f9;padding:12px 20px;display:flex;justify-content:space-between;align-items:center}.header h1{font-size:2.5rem}.header-info{display:flex;align-items:center;gap:15px}.header-info a{color:#d4d7e0;text-decoration:none}.header-info button{background:#1c0969;color:#fff;border:none;padding:6px 12px;cursor:pointer;border-radius:5px}.header-info button:hover{background:#e7e0e0}.cart-container{padding:20px}.cart-item{display:flex;justify-content:space-between;padding:12px;background:#fff;border-radius:8px;margin-bottom:10px;box-shadow:0 2px 5px #0000000d}.cart-item span{font-size:1rem}.cart-item button{background:#ef4444;color:#fff;border:none;padding:6px 12px;border-radius:5px;cursor:pointer}.cart-item button:hover{background:#dc2626}.login-container{display:flex;justify-content:center;align-items:center;height:calc(100vh - 60px)}.login-box{background:#fff;padding:30px;border-radius:10px;width:300px;box-shadow:0 4px 10px #f0eeee1a}.login-box h2{margin-bottom:20px;text-align:center}.login-box input{width:100%;padding:8px;margin:8px 0;border-radius:5px;border:1px solid #ccc}.login-box button{width:100%;background:#2563eb;color:#fff;padding:10px;border:none;border-radius:5px;cursor:pointer}.login-box button:hover{background:#1d4ed8}.footer{background-color:#1e293b;color:#fff;text-align:center;padding:12px 0;margin-top:30px;font-size:.9rem}.footer p{margin:0}body{margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#89a53c}body{margin:0;font-family:Segoe UI,Tahoma,sans-serif;background:#56a5e5}a{color:inherit}nav{background:#c18a8a;padding:10px 20px;border-bottom:1px solid #121212}nav a{margin-right:15px;text-decoration:none;color:#0a0a0a}nav a:hover{text-decoration:underline}