/* 智能排序系统样式 - smart-sorting-system.css */
/* 基础重置和变量 */
.smart-posts-modern-card,
.smart-posts-magazine,
.smart-posts-minimal,
.smart-posts-classic,
.smart-posts-creative {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-text: #666;
    --lighter-text: #999;
    --border-color: #e0e0e0;
    --card-shadow: 0 4px 12px rgba(0,0,0,0.1);
    --hover-shadow: 0 8px 25px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

/* 现代卡片布局样式 */
.smart-posts-modern-card {
    display: grid;
    gap: 25px;
    margin: 30px 0;
}

.smart-grid-columns-2 { grid-template-columns: repeat(2, 1fr); }
.smart-grid-columns-3 { grid-template-columns: repeat(3, 1fr); }
.smart-grid-columns-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .smart-grid-columns-3 { grid-template-columns: repeat(2, 1fr); }
    .smart-grid-columns-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .smart-grid-columns-2,
    .smart-grid-columns-3,
    .smart-grid-columns-4 { grid-template-columns: 1fr; }
}

.smart-post-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    position: relative;
}

.smart-post-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.post-card-thumbnail {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.post-card-thumbnail .post-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.smart-post-card:hover .post-thumb {
    transform: scale(1.05);
}

.post-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.1) 100%);
    opacity: 0;
    transition: var(--transition);
}

.smart-post-card:hover .post-overlay {
    opacity: 1;
}

.post-badges {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 8px;
}

.badge {
    background: rgba(255,255,255,0.9);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.likes-badge {
    color: var(--accent-color);
}

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

.post-category {
    margin-bottom: 8px;
}

.post-category a {
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-decoration: none;
}

.post-card-title {
    margin: 0 0 12px 0;
    font-size: 1.2em;
    line-height: 1.4;
}

.post-card-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.post-card-title a:hover {
    color: var(--primary-color);
}

.post-card-excerpt {
    color: var(--light-text);
    font-size: 0.9em;
    line-height: 1.5;
    margin-bottom: 15px;
}

.post-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.author-avatar {
    display: flex;
    align-items: center;
    gap: 8px;
}

.author-name {
    font-size: 0.85em;
    color: var(--light-text);
}

.post-stats {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.post-date {
    font-size: 0.8em;
    color: var(--lighter-text);
}

.stats-items {
    display: flex;
    gap: 8px;
}

.stat-item {
    font-size: 0.8em;
    color: var(--lighter-text);
}

/* 卡片样式变体 */
.card-style-modern .smart-post-card {
    border: 1px solid var(--border-color);
}

.card-style-flat .smart-post-card {
    box-shadow: none;
    border: 1px solid var(--border-color);
}

.card-style-flat .smart-post-card:hover {
    box-shadow: var(--card-shadow);
}

.card-style-gradient .smart-post-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* 杂志布局样式 */
.smart-posts-magazine {
    margin: 30px 0;
}

.magazine-featured {
    margin-bottom: 40px;
}

.featured-post {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: center;
}

@media (max-width: 768px) {
    .featured-post {
        grid-template-columns: 1fr;
    }
}

.featured-thumbnail {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
}

.featured-thumb {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.featured-content {
    padding: 20px 0;
}

.featured-title {
    font-size: 1.8em;
    line-height: 1.3;
    margin: 15px 0;
}

.featured-title a {
    color: var(--text-color);
    text-decoration: none;
}

.featured-excerpt {
    font-size: 1.1em;
    line-height: 1.6;
    color: var(--light-text);
    margin-bottom: 20px;
}

.featured-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.author-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-details {
    display: flex;
    flex-direction: column;
}

.magazine-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

@media (max-width: 1024px) {
    .magazine-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .magazine-grid {
        grid-template-columns: 1fr;
    }
}

.magazine-post {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.magazine-post:hover {
    transform: translateY(-3px);
    box-shadow: var(--hover-shadow);
}

.magazine-content {
    padding: 15px;
}

.magazine-title {
    font-size: 1.1em;
    margin: 0 0 10px 0;
    line-height: 1.4;
}

.magazine-title a {
    color: var(--text-color);
    text-decoration: none;
}

.magazine-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    color: var(--light-text);
}

/* 简约布局样式 */
.smart-posts-minimal {
    margin: 20px 0;
}

.minimal-post {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.minimal-post:hover {
    background: #f8f9fa;
    padding-left: 10px;
    border-left: 3px solid var(--primary-color);
}

.minimal-title {
    margin: 0 0 8px 0;
    font-size: 1.1em;
}

.minimal-title a {
    color: var(--text-color);
    text-decoration: none;
}

.minimal-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    color: var(--light-text);
}

/* 经典布局样式 */
.smart-posts-classic {
    margin: 30px 0;
}

.classic-post {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.classic-post:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.classic-thumbnail {
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
}

.classic-thumb {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.classic-title {
    font-size: 1.6em;
    margin: 0 0 15px 0;
    line-height: 1.3;
}

.classic-title a {
    color: var(--text-color);
    text-decoration: none;
}

.classic-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    font-size: 0.9em;
    color: var(--light-text);
    flex-wrap: wrap;
}

.classic-excerpt {
    font-size: 1em;
    line-height: 1.6;
    color: var(--light-text);
    margin-bottom: 15px;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

/* 创意布局样式 */
.smart-posts-creative {
    display: grid;
    gap: 25px;
    margin: 30px 0;
}

.creative-columns-2 { grid-template-columns: repeat(2, 1fr); }
.creative-columns-3 { grid-template-columns: repeat(3, 1fr); }
.creative-columns-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .creative-columns-3 { grid-template-columns: repeat(2, 1fr); }
    .creative-columns-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .creative-columns-2,
    .creative-columns-3,
    .creative-columns-4 { grid-template-columns: 1fr; }
}

.creative-post {
    position: relative;
}

.creative-inner {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.creative-inner:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.creative-thumbnail {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.creative-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.creative-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.creative-inner:hover .creative-overlay {
    opacity: 1;
}

.overlay-content .view-post {
    color: white;
    padding: 10px 20px;
    border: 2px solid white;
    border-radius: 25px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 1px;
}

.creative-content {
    padding: 20px;
    background: white;
}

.creative-title {
    font-size: 1.1em;
    margin: 10px 0;
    line-height: 1.4;
}

.creative-title a {
    color: var(--text-color);
    text-decoration: none;
}

.creative-excerpt {
    font-size: 0.9em;
    color: var(--light-text);
    line-height: 1.5;
    margin-bottom: 15px;
}

.creative-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85em;
    color: var(--light-text);
}

.meta-stats {
    display: flex;
    gap: 10px;
}

.no-posts {
    text-align: center;
    color: var(--light-text);
    font-style: italic;
    padding: 40px 20px;
    background: #f8f9fa;
    border-radius: 8px;
}