/* ========================================
   画廊页面专用样式
   ======================================== */

/* 筛选器 */
.gallery-filters {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 0;
}

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

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

/* 瀑布流网格 */
.gallery-section {
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.masonry-grid {
    column-count: 3;
    column-gap: var(--spacing-md);
}

.masonry-item {
    break-inside: avoid;
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.masonry-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-bg-secondary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.masonry-image {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.masonry-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

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

.masonry-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.3) 50%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
    color: white;
}

.masonry-card:hover .masonry-overlay {
    opacity: 1;
}

.masonry-title {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.masonry-meta {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* 加载更多 */
.load-more-container {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    background-color: var(--color-bg);
    border-radius: var(--radius-xl);
    max-width: 1200px;
    max-height: 90vh;
    width: 100%;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 10;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: rgba(0, 0, 0, 0.8);
    transform: rotate(90deg);
}

.modal-body {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-image {
    position: relative;
    background-color: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-image img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.modal-info {
    padding: var(--spacing-2xl);
    overflow-y: auto;
}

.modal-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xl);
}

.modal-meta {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-label {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.meta-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.modal-description h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.modal-description p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .masonry-grid {
        column-count: 2;
    }

    .modal-body {
        grid-template-columns: 1fr;
    }

    .modal-image {
        max-height: 50vh;
    }
}

@media (max-width: 768px) {
    .gallery-filters {
        top: 70px;
    }

    .filter-buttons {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .filter-buttons::-webkit-scrollbar {
        display: none;
    }

    .filter-btn {
        white-space: nowrap;
    }
}

@media (max-width: 640px) {
    .masonry-grid {
        column-count: 1;
    }

    .modal-info {
        padding: var(--spacing-md);
    }

    .modal-meta {
        grid-template-columns: 1fr;
    }
}