/**
 * 瀑布流样式
 *
 * @package Xuhuan
 * @since 1.0.0
 */

/* ==========================================================================
   Masonry Grid
   ========================================================================== */
.masonry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.masonry-grid[data-columns="2"] {
    grid-template-columns: repeat(2, 1fr);
}

.masonry-grid[data-columns="3"] {
    grid-template-columns: repeat(3, 1fr);
}

.masonry-grid[data-columns="5"] {
    grid-template-columns: repeat(5, 1fr);
}

.masonry-grid[data-columns="6"] {
    grid-template-columns: repeat(6, 1fr);
}

/* ==========================================================================
   Model Card
   ========================================================================== */
.model-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Card Image */
.model-card .card-image {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.model-card .card-image-link {
    display: block;
    width: 100%;
    height: 100%;
}

.model-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.model-card:hover .card-image img {
    transform: scale(1.05);
}

.model-card .card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

/* Card Category Badge */
.model-card .card-category {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    z-index: 1;
}

.model-card .card-category a {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    color: var(--text-light);
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.model-card .card-category a:hover {
    background: var(--primary-color);
}

/* Card Price Tag */
.model-card .card-price-tag {
    position: absolute;
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
    z-index: 1;
    display: inline-block;
    padding: 3px 10px;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-md);
    backdrop-filter: blur(4px);
    line-height: 1.4;
    color: #fff;
}

.model-card .card-price-free {
    background: rgba(34, 197, 94, 0.85);
}

.model-card .card-price-paid {
    background: rgba(239, 68, 68, 0.85);
}

.model-card .card-price-login {
    background: rgba(59, 130, 246, 0.85);
}

.model-card .card-price-vip {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.9), rgba(217, 119, 6, 0.9));
}

.model-card .card-price-points {
    background: rgba(139, 92, 246, 0.85);
}

/* Card Favorite Button */
.model-card .card-favorite {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    cursor: pointer;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--transition-fast);
    z-index: 1;
}

.model-card:hover .card-favorite {
    opacity: 1;
    transform: scale(1);
}

.model-card .card-favorite:hover {
    background: var(--text-light);
    color: var(--danger-color, #dc3545);
}

.model-card .card-favorite.favorited {
    opacity: 1;
    color: var(--danger-color, #dc3545);
}

/* Card Formats */
.model-card .card-formats {
    position: absolute;
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.model-card .format-tag {
    padding: 2px 8px;
    background: var(--primary-color);
    color: var(--text-light);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
}

/* Card Body */
.model-card .card-body {
    padding: var(--spacing-md);
    flex: 1;
}

.model-card .card-title {
    font-size: var(--text-base);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
}

.model-card .card-title a {
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.model-card .card-title a:hover {
    color: var(--primary-color);
}

.model-card .card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.model-card .card-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.model-card .card-author img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
}

/* Card Footer */
.model-card .card-footer {
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.model-card .card-stats {
    display: flex;
    gap: var(--spacing-md);
}

.model-card .stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.model-card .card-download-btn {
    padding: 6px 12px;
}

/* ==========================================================================
   List View
   ========================================================================== */
.masonry-grid.list-view {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.masonry-grid.list-view .model-card {
    flex-direction: row;
}

.masonry-grid.list-view .model-card .card-image {
    width: 240px;
    min-width: 240px;
    aspect-ratio: auto;
    height: 160px;
}

.masonry-grid.list-view .model-card .card-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.masonry-grid.list-view .model-card .card-footer {
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    border-top: none;
    border-left: 1px solid var(--border-light);
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
}

.masonry-grid.list-view .model-card .card-stats {
    flex-direction: column;
    gap: var(--spacing-xs);
}

/* ==========================================================================
   Load More
   ========================================================================== */
.load-more-wrapper {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

#load-more {
    min-width: 200px;
}

#load-more.loading {
    pointer-events: none;
}

/* ==========================================================================
   No Results
   ========================================================================== */
.no-results {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
}

.no-results-icon {
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.no-results h2 {
    margin-bottom: var(--spacing-md);
}

.no-results p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
}

/* ==========================================================================
   Skeleton Loading
   ========================================================================== */
.model-card.skeleton .card-image {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.model-card.skeleton .card-title,
.model-card.skeleton .card-meta {
    height: 16px;
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

.model-card.skeleton .card-title {
    width: 80%;
    margin-bottom: var(--spacing-md);
}

.model-card.skeleton .card-meta {
    width: 50%;
}

/* ==========================================================================
   Lazy Load Image
   ========================================================================== */
.model-card .card-image img.lazy {
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.model-card .card-image img.lazy.loaded {
    opacity: 1;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1280px) {
    .masonry-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .masonry-grid[data-columns="5"],
    .masonry-grid[data-columns="6"] {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1024px) {
    .masonry-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .masonry-grid[data-columns="4"],
    .masonry-grid[data-columns="5"],
    .masonry-grid[data-columns="6"] {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .masonry-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .masonry-grid[data-columns="3"],
    .masonry-grid[data-columns="4"],
    .masonry-grid[data-columns="5"],
    .masonry-grid[data-columns="6"] {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .model-card .card-favorite {
        opacity: 1;
        transform: scale(1);
    }
    
    .masonry-grid.list-view .model-card {
        flex-direction: column;
    }
    
    .masonry-grid.list-view .model-card .card-image {
        width: 100%;
        height: auto;
        aspect-ratio: 4 / 3;
    }
    
    .masonry-grid.list-view .model-card .card-footer {
        flex-direction: row;
        border-left: none;
        border-top: 1px solid var(--border-light);
    }
    
    .masonry-grid.list-view .model-card .card-stats {
        flex-direction: row;
    }
}

@media (max-width: 480px) {
    .masonry-grid {
        grid-template-columns: 1fr;
    }
    
    .masonry-grid[data-columns="2"] {
        grid-template-columns: 1fr;
    }
}