/* ========== 瀑布流容器 ========== */
.masonry-grid {
    column-count: 3;
    column-gap: 24px;
    padding: 20px 0;
    max-width: 1400px;
    margin: 0 auto;
}

.masonry-grid .masonry-item {
    break-inside: avoid;
    margin-bottom: 24px;
    page-break-inside: avoid;
}

/* ========== 基础卡片 ========== */
.masonry-card {
    background: var(--card-bg, #ffffff);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color, #e2e8f0);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    display: block;
    text-decoration: none;
}


.masonry-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.15);
    border-color: transparent;
}


/* ========== 封面区域（图片在上） ========== */
.masonry-card .card-cover {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.masonry-card .card-cover.tall {
    padding-top: 60%;
}

.masonry-card .card-cover.medium {
    padding-top: 55%;
}

.masonry-card .card-cover.wide {
    padding-top: 50%;
}

.masonry-card .card-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.masonry-card:hover .card-cover img {
    transform: scale(1.08);
}

/* ========== 内容区域 ========== */
.masonry-card .card-body {
    padding: 18px 20px 20px;
}

/* 顶部元信息 */
.masonry-card .card-meta-top {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    flex-wrap: wrap;
    font-size: 0.75rem;
    color: var(--text-muted, #94a3b8);
}

.masonry-card .card-meta-top span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.masonry-card .card-meta-top i {
    font-size: 0.8rem;
}

.masonry-card .card-meta-top .tag {
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
}

.masonry-card .card-meta-top .tag i {
    font-size: 0.65rem;
}

/* 标题 */
.masonry-card .card-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text-primary, #1e293b);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
    transition: color 0.3s ease;
}

.masonry-card:hover .card-title {
    color: #6366f1;
}

/* 描述 */
.masonry-card .post-desc {
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text-secondary, #64748b);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
    word-break: break-word;
}

/* ========== 底部栏 ========== */
.masonry-card .card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--border-color, #e2e8f0);
}

/* 作者信息 */
.masonry-card .card-author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.masonry-card .card-author img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color, #e2e8f0);
    transition: all 0.3s ease;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.masonry-card:hover .card-author img {
    border-color: #6366f1;
    transform: scale(1.1);
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.masonry-card .card-author .author-name {
    font-size: 0.8rem;
    color: var(--text-secondary, #64748b);
    font-weight: 500;
}

/* 三个点按钮 */
.masonry-card .card-action {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted, #94a3b8);
    font-size: 1rem;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.masonry-card:hover .card-action {
    color: #6366f1;
    transform: scale(1.2);
}

/* ========== 纯文字卡片 ========== */
.masonry-card.text-only {
    padding: 24px;
    min-height: 240px;
    display: flex;
    flex-direction: column;
}

.masonry-card.text-only .text-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.masonry-card.text-only .sticky-badge {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: #fff;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.masonry-card.text-only .sticky-badge i {
    font-size: 0.7rem;
}

.masonry-card.text-only .card-category {
    font-size: 0.75rem;
    color: #6366f1;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.masonry-card.text-only .card-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.masonry-card.text-only .post-desc {
    flex: 1;
}

/* ========== 广告卡片 ========== */
.masonry-item.ads-wrap {
    break-inside: avoid;
    margin-bottom: 24px;
}

.masonry-card.ad-card {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

/* ========== 暗黑模式 ========== */
[data-theme="dark"] .masonry-card {
    background: #1e293b;
    border-color: #334155;
}

[data-theme="dark"] .masonry-card .card-title {
    color: #f1f5f9;
}

[data-theme="dark"] .masonry-card .post-desc {
    color: #94a3b8;
}

[data-theme="dark"] .masonry-card .card-footer {
    border-color: #334155;
}

[data-theme="dark"] .masonry-card .card-author img {
    border-color: #334155;
}

[data-theme="dark"] .masonry-card .card-action {
    color: #64748b;
}

[data-theme="dark"] .masonry-card:hover .card-action {
    color: #818cf8;
}

/* ========== 响应式 ========== */
@media screen and (max-width: 1200px) {
    .masonry-grid {
        column-count: 3;
        column-gap: 20px;
    }
}

@media screen and (max-width: 900px) {
    .masonry-grid {
        column-count: 2;
        column-gap: 16px;
        padding: 16px;
    }
    
    .masonry-grid .masonry-item {
        margin-bottom: 16px;
    }
    
    .masonry-card .card-body {
        padding: 14px 16px 16px;
    }
}

@media screen and (max-width: 600px) {
    .masonry-grid {
        column-count: 1;
        column-gap: 0;
        padding: 12px;
    }
    
    .masonry-card .card-title {
        font-size: 1.05rem;
    }
}