/* Post Card Styles */
.nebula-post-card {
    display: flex;
    flex-direction: column;
    background: var(--nebula-bg, #FFFFFF);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--nebula-shadow-card, 0 2px 12px rgba(0, 0, 0, 0.06));
    transition: all 0.25s ease;
}

.nebula-post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.nebula-post-card--grid {
    flex-direction: column;
}

.nebula-post-card--list {
    flex-direction: row;
}

.nebula-post-card--list .nebula-post-card__thumbnail {
    width: 280px;
    flex-shrink: 0;
}

.nebula-post-card--list .nebula-post-card__content {
    flex: 1;
}

/* Thumbnail - 16:9 Aspect Ratio */
.nebula-post-card__thumbnail {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    margin: 12px 12px 0 12px;
    border-radius: 8px;
}

.nebula-post-card__thumbnail a {
    display: block;
    width: 100%;
    height: 100%;
}

.nebula-post-card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.nebula-post-card:hover .nebula-post-card__thumbnail img {
    transform: scale(1.05);
}

.nebula-post-card__cat-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: var(--nebula-primary, #0EA5E9);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 6px;
}

/* Content */
.nebula-post-card__content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.nebula-post-card__cats-inline {
    margin-bottom: 10px;
}

.nebula-post-card__cat-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--nebula-primary-light, #E0F2FE);
    color: var(--nebula-primary-dark, #0284C7);
    font-size: 0.75rem;
    font-weight: var(--nebula-font-medium, 500);
    border-radius: var(--nebula-radius-full, 9999px);
    text-decoration: none;
    transition: all var(--nebula-duration-fast, 0.15s);
}

.nebula-post-card__cat-tag:hover {
    background: var(--nebula-primary, #0EA5E9);
    color: #fff;
}

/* Title */
.nebula-post-card__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--nebula-text, #1E293B);
    margin-bottom: 12px;
    line-height: 1.5;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.nebula-post-card__title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.15s ease;
}

.nebula-post-card__title a:hover {
    color: var(--nebula-primary, #0EA5E9);
}

/* Source Badge (原创/转载/翻译) */
.nebula-source {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 4px;
    flex-shrink: 0;
}

.nebula-source--original {
    background: #fef3c7;
    color: #92400e;
}

.nebula-source--reprint {
    background: #e0e7ff;
    color: #3730a3;
}

.nebula-source--translated {
    background: #d1fae5;
    color: #065f46;
}

/* Excerpt */
.nebula-post-card__excerpt {
    font-size: 0.9rem;
    color: var(--nebula-text-secondary, #64748b);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Meta */
.nebula-post-card__meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--nebula-text-muted, #94A3B8);
    padding-top: 12px;
    border-top: 1px solid var(--nebula-border, #E2E8F0);
}

.nebula-post-card__meta > span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nebula-post-card__meta a {
    color: inherit;
    text-decoration: none;
    transition: color var(--nebula-duration-fast, 0.15s);
}

.nebula-post-card__meta a:hover {
    color: var(--nebula-primary, #0EA5E9);
}

/* Tags */
.nebula-post-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.nebula-post-card__tag {
    padding: 4px 10px;
    background: var(--nebula-bg-secondary, #F8FAFC);
    border-radius: var(--nebula-radius-sm, 4px);
    font-size: 0.75rem;
    color: var(--nebula-text-secondary, #64748b);
    text-decoration: none;
    transition: all var(--nebula-duration-fast, 0.15s);
}

.nebula-post-card__tag:hover {
    background: var(--nebula-primary, #0EA5E9);
    color: #fff;
}

/* Grid Layout */
.nebula-post-list--grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

/* List Layout */
.nebula-post-list--list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .nebula-post-card--list {
        flex-direction: column;
    }

    .nebula-post-card--list .nebula-post-card__thumbnail {
        width: 100%;
    }

    .nebula-post-list--grid {
        grid-template-columns: 1fr;
    }

    .nebula-post-card__content {
        padding: 16px;
    }

    .nebula-post-card__title {
        font-size: 1rem;
    }
}