/* ==================== AiLabCard 组件样式 ==================== */

/* ===== 网格布局 ===== */
.ai-lab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-5);  /* 24px */
    max-width: 1200px;
    margin: 0 auto;  /* 移除顶部间距 */
}

/* ===== 卡片基础样式 ===== */
.ailab-card {
    border: 1px solid #f8fafc;
    border-radius: 12px;  /* 移动端圆角 12px（V6.0） */
    overflow: hidden;
    background: #fff;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.ailab-card:hover {
    border-color: #111111;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* ===== 卡片媒体区域 ===== */
.card-media {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    z-index: 1;
}

/* 媒体内部容器 - 承载响应式内边距 */
.card-media-inner {
    position: absolute;
    top: var(--card-cover-padding, 24px);
    left: var(--card-cover-padding, 24px);
    right: var(--card-cover-padding, 24px);
    bottom: 0;
    border-radius: 12px;
    overflow: hidden;
}

.card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    border-radius: 12px;
}

/* 图片加载完成后移除骨架屏效果 */
.card-media img.loaded {
    animation: none;
}

.card-media img.loaded::before {
    display: none;
}

/* 媒体区域骨架屏 - 保持白色背景 */
.card-media.skeleton-gradient-ai-1 {
    background: #ffffff;
}

.card-media.skeleton-container {
    background: #ffffff;
}

/* 无封面图时的纯色背景 */
.card-media.no-cover-bg {
    background: #ffffff;
}

.card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0);
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    z-index: 2;
}

.play-button {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    z-index: 3;
    overflow: visible;
}

.play-button::before {
    content: "";
    display: block;
    width: 0;
    height: 0;
    border-left: 14px solid #ffffff;
    border-top: 9px solid transparent;
    border-bottom: 9px solid transparent;
    margin-left: 2px;
}

.ailab-card:hover .card-overlay {
    background: rgba(0, 0, 0, 0.35);
}

.ailab-card:hover .play-button {
    opacity: 1;
    transform: scale(1);
}

.ailab-card:hover .card-media img {
    transform: scale(1.05);
}

/* ===== 卡片内容区域 ===== */
/* PC 端（默认） */
.card-content {
    padding: var(--spacing-5);  /* 24px */
}

.card-content h3 {
    font-size: var(--font-size-lg);  /* 20px */
    font-weight: 600;
    color: #111111;
    margin: 0 0 var(--spacing-2) 0;  /* 8px */
    line-height: 1.4;
    letter-spacing: 0;
}

.ai-lab-description {
    font-size: var(--font-size-sm);  /* 14px */
    color: #666666;
    margin: 0;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 空状态 ===== */
.ai-lab-empty {
    text-align: center;
    padding: var(--spacing-7) var(--spacing-4);
    color: #999999;
    font-size: var(--font-size-sm);
    grid-column: 1 / -1;
}

/* ===== 加载更多按钮 ===== */
.load-more-ai-lab {
    text-align: center;
    margin-top: var(--spacing-5);
    padding-bottom: var(--spacing-6);
}

.load-more-ai-lab-btn {
    display: inline-block;
    padding: 12px 30px;
    background: #111111;
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.load-more-ai-lab-btn:hover {
    background: #000;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.load-more-ai-lab-btn.hidden {
    display: none;
}

/* ===== 响应式布局 ===== */

/* PC 端（≥1024px）- 3列 */
@media (min-width: 1024px) {
    .ai-lab-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-5);  /* 24px */
    }
    
    .ailab-card {
        border-radius: 24px;  /* PC 端圆角 24px（V6.0） */
    }
}

/* 平板端 768px–1023px - 2列 */
@media (max-width: 1023px) {
    .ai-lab-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-5);  /* 24px */
        margin-top: 0;
    }
    
    .ailab-card {
        border-radius: 16px;  /* 平板端圆角 16px（V6.0） */
    }
    
    .card-media-inner {
        --card-cover-padding: 20px;
    }
    
    .card-content {
        padding: 20px;
    }
    
    .card-content h3 {
        font-size: clamp(1rem, 1.5vw + 0.75rem, 1.125rem); /* 16px - 18px */
    }

    /* 平板 / 移动端：取消 hover 暗色遮罩、黑边与放大 */
    .ailab-card:hover {
        border-color: #f8fafc;
        transform: none;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    }

    .ailab-card:hover .card-overlay {
        background: rgba(0, 0, 0, 0);
    }

    .ailab-card:hover .play-button {
        opacity: 0;
        transform: scale(0.8);
    }

    .ailab-card:hover .card-media img,
    .ailab-card:hover .ailab-card-video-cover {
        transform: none;
    }
}

/* 移动端 ≤767px - 1列 */
@media (max-width: 767px) {
    .ai-lab-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);  /* 16px */
        margin-top: 0;
    }
    
    .card-media-inner {
        --card-cover-padding: 16px;
    }
    
    .card-content {
        padding: var(--spacing-4);  /* 16px */
    }
    
    .card-content h3 {
        font-size: clamp(0.9375rem, 1.5vw + 0.5rem, 1rem); /* 15px - 16px */
    }
    
    .ai-lab-description {
        font-size: clamp(0.8125rem, 1.5vw + 0.375rem, 0.9375rem); /* 13px - 15px */
    }
}

/* 超小屏 ≤480px - 间距收窄 */
@media (max-width: 480px) {
    .ai-lab-grid {
        gap: var(--spacing-3);  /* 12px */
    }
    
    .card-content {
        padding: var(--spacing-3);  /* 12px */
    }
    
    .ai-lab-description {
        font-size: clamp(0.75rem, 1vw + 0.5rem, 0.875rem); /* 12px - 14px */
    }
}

/* ==================== 视频封面样式 ==================== */

/* 视频封面 */
.card-media .ailab-card-video-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

/* 视频封面在 hover 时放大 */
.ailab-card:hover .ailab-card-video-cover {
    transform: scale(1.05);
}

/* ==================== AI Lab 视频详情弹窗 ==================== */

/* 弹窗背景遮罩 */
.ai-lab-video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ai-lab-video-modal.active {
    opacity: 1;
    visibility: visible;
}

/* 背景遮罩 */
.ai-lab-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backflow-filter: blur(8px);
}

/* 弹窗内容容器 */
.ai-lab-modal-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 视频容器 */
.ai-lab-modal-video-container {
    width: 100%;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* 视频元素 */
.ai-lab-modal-video {
    width: 100%;
    max-height: 80vh;
    display: block;
}

/* 关闭按钮 */
.ai-lab-modal-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    font-size: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    backdrop-filter: blur(4px);
}

.ai-lab-modal-close:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: rotate(90deg);
}

/* 响应式 */
@media (max-width: 767px) {
    .ai-lab-modal-content {
        width: 95%;
    }
    
    .ai-lab-modal-video {
        max-height: 60vh;
    }
    
    .ai-lab-modal-close {
        top: -45px;
        width: 40px;
        height: 40px;
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .ai-lab-modal-video {
        max-height: 50vh;
    }
    
    .ai-lab-modal-close {
        top: -40px;
        right: 0;
        width: 36px;
        height: 36px;
        font-size: 20px;
    }
}