/* Image Loading Placeholder */
.image-placeholder {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    overflow: hidden;
}

.image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-placeholder.loaded img {
    opacity: 1;
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    color: var(--primary-color);
    opacity: 0.5;
}

.image-placeholder.loaded .loading-spinner {
    display: none;
}

@keyframes loading {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Dark mode image placeholder */
body.dark-theme .image-placeholder {
    background: linear-gradient(90deg, #2d2d2d 25%, #3d3d3d 50%, #2d2d2d 75%);
}

/* Catalog page specific styles continue below... */
.catalog-page-content {
    padding: 2rem;
}

.catalog-hero {
    background: var(--gradient-primary);
    color: white;
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    margin-bottom: 2rem;
}

.catalog-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.catalog-hero p {
    font-size: 1.125rem;
    opacity: 0.95;
}

.catalog-filter-section {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
}

.filter-sidebar {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    height: fit-content;
    position: sticky;
    top: calc(var(--header-height) + 2rem);
}

.filter-sidebar h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.filter-group {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-group:last-of-type {
    border-bottom: none;
}

.filter-group h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.filter-group label:hover {
    color: var(--text-primary);
}

.filter-group input[type="checkbox"],
.filter-group input[type="radio"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.btn-reset-filter {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-reset-filter:hover {
    background: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
}

.catalog-main {
    min-height: 600px;
}

.catalog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.result-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.result-count strong {
    color: var(--text-primary);
    font-size: 1rem;
}

.sort-select {
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    min-width: 150px;
}

.catalog-grid-full {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.page-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s;
}

.page-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.page-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Dark theme adjustments */
body.dark-theme .filter-sidebar,
body.dark-theme .sort-select {
    background: var(--bg-primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .catalog-filter-section {
        grid-template-columns: 1fr;
    }
    
    .filter-sidebar {
        position: static;
        margin-bottom: 2rem;
    }
}

@media (max-width: 768px) {
    .catalog-hero h1 {
        font-size: 1.875rem;
    }
    
    .catalog-hero {
        padding: 2rem 1.5rem;
    }
    
    .catalog-grid-full {
        grid-template-columns: 1fr;
    }
    
    .catalog-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .sort-select {
        width: 100%;
    }
}