/* Category and Subcategory Page Styles */

/* Category Header */
.category-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--background-secondary);
    color: var(--text-color);
    border-radius: var(--radius);
    margin: 0 1rem 3rem 1rem;
    border: 1px solid var(--border-light);
}

.category-title {
    margin: 0 0 1rem 0;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.category-description {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Books Section */
.books-section {
    margin-bottom: 4rem;
}

/* Subcategories Section */
.subcategories-section {
    background: var(--background-color);
    border-radius: var(--radius);
    padding: 2rem;
    margin: 0 1rem 3rem 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.subcategories-header {
    text-align: center;
    margin-bottom: 2rem;
}

.subcategories-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 0.5rem 0;
    text-align: center;
}

.subcategories-subtitle {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1rem;
}

.subcategories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.subcategory-card {
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, var(--background-secondary) 0%, var(--background-color) 100%);
    border: 2px solid var(--border-light);
    border-radius: var(--radius);
    padding: 1rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: auto;
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.subcategory-card:nth-child(1) { animation-delay: 0.1s; }
.subcategory-card:nth-child(2) { animation-delay: 0.2s; }
.subcategory-card:nth-child(3) { animation-delay: 0.3s; }
.subcategory-card:nth-child(4) { animation-delay: 0.4s; }
.subcategory-card:nth-child(5) { animation-delay: 0.5s; }
.subcategory-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.subcategory-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.subcategory-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(var(--primary-color-rgb, 59, 130, 246), 0.02) 0%, rgba(var(--primary-color-rgb, 59, 130, 246), 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.subcategory-card:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--background-color) 0%, var(--background-secondary) 100%);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.subcategory-card:hover::before {
    transform: scaleX(1);
}

.subcategory-card:hover::after {
    opacity: 1;
}

.subcategory-content {
    display: flex;
    flex-direction: column;
}

.subcategory-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0 0 0.5rem 0;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.subcategory-card:hover .subcategory-name {
    color: var(--primary-color);
}

.subcategory-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
}

/* No books found */
.no-books-found {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--background-color);
    border-radius: var(--radius);
    margin: 0 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.no-books-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.no-books-found h3 {
    margin: 0 0 1rem 0;
    color: var(--text-color);
    font-size: 1.5rem;
}

.no-books-found p {
    margin: 0 0 2rem 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.5;
}

.no-books-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.no-books-actions .btn {
    min-width: 200px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.no-books-actions .btn-primary {
    background: var(--primary-color);
    color: white;
    border: 2px solid var(--primary-color);
}

.no-books-actions .btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.no-books-actions .btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.no-books-actions .btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}



.no-books-found .btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
}

.no-books-found .btn:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

/* Responsive Design */
@media (max-width: 768px) {
    .category-header {
        margin: 0 0.5rem 2rem 0.5rem;
        padding: 1.5rem 1rem;
    }
    
    .category-title {
        font-size: 2rem;
    }
    
    .category-description {
        font-size: 1rem;
    }
    
    .subcategories-section {
        margin: 0 0.5rem 2rem 0.5rem;
        padding: 1.5rem 1rem;
    }
    
    .subcategories-title {
        font-size: 1.5rem;
    }
    
    .subcategories-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .subcategory-card {
        padding: 0.875rem;
    }
    
    .subcategory-name {
        font-size: 1rem;
    }
    
    .no-books-found {
        margin: 0 0.5rem;
        padding: 2rem 1rem;
    }
    
    .no-books-icon {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .category-title {
        font-size: 1.75rem;
    }
    
    .category-description {
        font-size: 0.9rem;
    }
    
    .subcategory-card {
        padding: 0.75rem;
    }
    
    .subcategory-name {
        font-size: 0.95rem;
    }
    
    .subcategory-description {
        font-size: 0.8rem;
    }
}