/**
 * 项目资产卡片样式
 * 符合代码规范：<400行
 * 单卡固定 380×300px；网格按列宽换行，避免视口变化时 1fr 拉伸导致变形
 * 使用独立前缀 project-asset-card-，确保面板独立性
 */

/* 项目资产卡片网格容器（列宽与单卡宽度一致，仅换列数不拉伸单卡） */
.project-asset-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, 380px);
    justify-content: start;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    width: 100%;
    min-height: 400px;
}

/* 列表淡入（与骨架衔接） */
.project-asset-card-grid.project-asset-card-grid--pre-in {
    opacity: 0;
}

.project-asset-card-grid.project-asset-card-grid--fade-in {
    opacity: 1;
    transition: opacity 0.42s ease-out;
}

/* 列表重载：在延迟铺骨架前轻微压暗当前卡片，过渡比整屏骨架「一闪」更柔和 */
.project-asset-card-grid.project-asset-card-grid--reloading {
    opacity: 0.76;
    pointer-events: none;
    transition: opacity 0.22s ease-out;
}

/* 骨架屏占位（与单卡同尺寸，避免布局跳动） */
.project-asset-card-grid--skeleton {
    pointer-events: none;
}

.project-asset-card-skeleton {
    box-sizing: border-box;
    width: 380px;
    min-width: 380px;
    max-width: 380px;
    height: 300px;
    min-height: 300px;
    max-height: 300px;
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-asset-card-skeleton__preview {
    flex: 0 0 200px;
    width: 100%;
    background-image: linear-gradient(
        90deg,
        var(--bg-tertiary) 0%,
        rgba(128, 128, 128, 0.12) 50%,
        var(--bg-tertiary) 100%
    );
    background-size: 200% 100%;
    animation: project-asset-card-skeleton-shimmer 1.85s ease-in-out infinite;
}

.project-asset-card-skeleton__body {
    flex: 1;
    min-height: 0;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    justify-content: flex-start;
}

.project-asset-card-skeleton__line {
    height: 12px;
    border-radius: 4px;
    background-image: linear-gradient(
        90deg,
        var(--bg-tertiary) 0%,
        rgba(128, 128, 128, 0.1) 50%,
        var(--bg-tertiary) 100%
    );
    background-size: 200% 100%;
    animation: project-asset-card-skeleton-shimmer 1.85s ease-in-out infinite;
}

.project-asset-card-skeleton__line--title {
    height: 14px;
    width: 72%;
}

.project-asset-card-skeleton__line--short {
    width: 55%;
}

@keyframes project-asset-card-skeleton-shimmer {
    0% {
        background-position: 100% 0;
    }
    100% {
        background-position: -100% 0;
    }
}

@keyframes project-asset-card-spin {
    to {
        transform: rotate(360deg);
    }
}

/* 项目资产卡片（固定外尺寸，不受网格 fr 分配影响） */
.project-asset-card {
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    width: 380px;
    min-width: 380px;
    max-width: 380px;
    height: 300px;
    min-height: 300px;
    max-height: 300px;
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", "Arial", sans-serif;
}

.project-asset-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-primary);
}

/* 卡片预览区域（固定 200px 高，不参与 flex 收缩，保证总高 300 内信息区稳定） */
.project-asset-card-preview {
    flex: 0 0 200px;
    width: 100%;
    height: 200px;
    background: var(--bg-tertiary);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 封面加载中：中央转圈示意（类型角标 z-index 更高，仍叠在上方） */
.project-asset-card-preview--loading::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 36px;
    height: 36px;
    margin: -18px 0 0 -18px;
    border: 3px solid rgba(255, 255, 255, 0.15);
    border-top-color: rgba(255, 255, 255, 0.82);
    border-radius: 50%;
    z-index: 9;
    pointer-events: none;
    animation: project-asset-card-spin 0.68s linear infinite;
    box-sizing: border-box;
}

/* 项目类型标签（预览区域左下角） */
.project-asset-card-type-tag {
    position: absolute;
    bottom: 3px;
    left: 3px;
    padding: 5px 10px;
    background: rgba(0, 0, 0, 0.75);
    color: #ffffff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", "Arial", sans-serif;
    line-height: 1.2;
    z-index: 10;
    pointer-events: none;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.2s ease;
    max-width: calc(100% - 12px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.project-asset-card:hover .project-asset-card-type-tag {
    background: rgba(0, 0, 0, 0.85);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* 卡片图片 */
.project-asset-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease, opacity 0.35s ease;
    position: relative;
    z-index: 2;
}

.project-asset-card-preview--loading .project-asset-card-image {
    opacity: 0;
    pointer-events: none;
}

.project-asset-card:hover .project-asset-card-image {
    transform: scale(1.05);
}

/* 卡片遮罩层 */
.project-asset-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    background: rgba(0, 0, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.project-asset-card:hover .project-asset-card-overlay {
    background: rgba(0, 0, 0, 0);
    opacity: 0;
    pointer-events: none;
}

/* 卡片操作按钮 */
.project-asset-card-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
}

/* 卡片信息区域（min-height:0 保证在固定 300px 总高下与预览区正确分配剩余空间） */
.project-asset-card-info {
    flex: 1;
    min-height: 0;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow: hidden;
}

/* 卡片名称 */
.project-asset-card-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-word;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", "Arial", sans-serif;
}

/* 项目简介（信息区，对应 description；类型仅在预览区左下角展示） */
.project-asset-card-intro {
    font-size: 12px;
    font-weight: normal;
    color: var(--text-secondary);
    line-height: 1.45;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", "Arial", sans-serif;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    word-break: break-word;
    min-height: 0;
    flex: 1;
}

/* 空状态样式 */
.project-asset-card-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    font-size: 12px;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", "Arial", sans-serif;
}