.header{display:flex;align-items:center;justify-content:space-between;padding:15px 30px;background:#222;color:#fff;flex-wrap:wrap}.search-form{display:flex;gap:10px;flex:1;min-width:200px;max-width:400px}.search-input{padding:8px;border-radius:5px;border:1px solid #ccc;flex:1}.search-button{padding:8px 12px;border:none;background:#4cafef;color:#fff;border-radius:5px;cursor:pointer}.nav-links{display:flex;gap:15px}.nav-links a{color:#fff;text-decoration:none;font-weight:700}.category-container{padding:10px 30px}.category-dropdown{padding:8px 12px;border-radius:6px;border:1px solid #ccc;font-size:1rem;cursor:pointer}.favorite-btn{padding:6px 10px;border:none;background:#dc143c;color:#fff;border-radius:5px;cursor:pointer}.book-list{list-style:none;padding:20px}.book-item{padding:12px;border-bottom:1px solid #ddd}.book-title-link{text-decoration:none;color:#222}.book-title-link:hover h3{color:#4cafef;text-decoration:underline}.pagination{display:flex;justify-content:center;gap:20px;padding:20px}.pagination button{padding:8px 14px;border-radius:5px;border:none;background:#333;color:#fff;cursor:pointer}.pagination button:disabled{background:#aaa;cursor:not-allowed}.favorites-container{padding:20px}.favorites-list{list-style:none;padding:0}.favorite-item{padding:12px;border-bottom:1px solid #ddd;display:flex;justify-content:space-between;align-items:center}.remove-favorite-btn{padding:6px 10px;border:none;background:#dc143c;color:#fff;border-radius:5px;cursor:pointer}.book-detail-container{padding:20px;max-width:800px;margin:0 auto}.book-title{margin-bottom:15px}.book-cover{width:200px;height:auto;display:block;margin-bottom:15px}.book-detail-container p{margin:8px 0}.book-detail-container a{color:#4cafef;text-decoration:none}.back-link{display:inline-block;margin-top:20px;text-decoration:none;color:#4cafef}