/* 视频页面专用样式 */

.video-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0 60px;
    text-align: center;
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.page-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.video-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

/* 视频筛选器 */
.video-filters {
    background: #f8f9fa;
    padding: 30px 0;
    border-bottom: 1px solid #e0e0e0;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border: 2px solid #ddd;
    background: white;
    border-radius: 25px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover {
    border-color: #667eea;
    color: #667eea;
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

/* 视频网格 */
.video-gallery {
    padding: 60px 0;
    background: #fafafa;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.video-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 比例 */
    background: #000;
    overflow: hidden;
}

.video-thumbnail video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.video-card:hover .video-play-overlay {
    background: rgba(0,0,0,0.5);
}

.play-icon {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all 0.3s ease;
}

.video-card:hover .play-icon {
    transform: scale(1.1);
    background: white;
}

.video-card-content {
    padding: 20px;
}

.video-card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-desc {
    font-size: 14px;
    color: #666;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: #999;
}

.video-category-tag {
    display: inline-block;
    padding: 4px 12px;
    background: #f0f0f0;
    border-radius: 12px;
    font-size: 12px;
    color: #666;
    margin-bottom: 8px;
}

/* 视频模态框 */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
}

.video-modal.active {
    display: block;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
}

.modal-content {
    position: relative;
    max-width: 1200px;
    margin: 50px auto;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    z-index: 10001;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    z-index: 10002;
    transition: all 0.3s ease;
}

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

.video-player-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: #000;
}

.video-player-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-info {
    padding: 30px;
}

.video-info h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.video-info p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.video-meta {
    display: flex;
    gap: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
}

.meta-item i {
    font-style: normal;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-title {
        font-size: 32px;
    }
    
    .video-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .modal-content {
        margin: 20px;
    }
    
    .video-meta {
        flex-direction: column;
        gap: 10px;
    }
}