/* 继承主样式 */
@import url('./main.css');

/* 分类网格 */
.categories-main {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--dark);
}

.section-subtitle {
    font-size: 18px;
    color: #666;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

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

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.category-card.hot::before {
    content: "🔥 热门";
    position: absolute;
    top: 15px;
    right: 15px;
    background: #ff6b6b;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    z-index: 1;
}

.category-card.trending::before {
    content: "📈 上升";
    position: absolute;
    top: 15px;
    right: 15px;
    background: #4ecdc4;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    z-index: 1;
}

.category-card.new::before {
    content: "✨ 新";
    position: absolute;
    top: 15px;
    right: 15px;
    background: #45b7d1;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    z-index: 1;
}

.category-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.category-info {
    padding: 30px;
}

.category-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark);
}

.category-count {
    font-size: 14px;
    color: var(--primary);
    margin-bottom: 15px;
    font-weight: 500;
}

.category-desc {
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}

.category-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.category-stats {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.stat {
    background: var(--gray);
    color: #666;
    padding: 4px 8px;
    border-radius: 8px;
    font-size: 12px;
}

/* 统计区域 */
.category-stats-section {
    padding: 80px 0;
    background: var(--gray);
}

.stats-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.stat-card {
    background: var(--light);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.stat-desc {
    font-size: 14px;
    color: #666;
}

/* 趋势列表 */
.trending-categories {
    background: var(--light);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.trending-title {
    font-size: 24px;
    margin-bottom: 30px;
    text-align: center;
}

.trending-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.trending-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--gray);
    border-radius: 12px;
    transition: var(--transition);
}

.trending-item:hover {
    background: rgba(102, 126, 234, 0.05);
}

.trend-rank {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.trend-info {
    flex: 1;
}

.trend-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.trend-data {
    display: flex;
    gap: 20px;
}

.trend-count {
    color: #666;
    font-size: 14px;
}

.trend-growth {
    font-size: 14px;
    font-weight: 600;
}

.trend-growth.up {
    color: #28a745;
}

.trend-growth.stable {
    color: #ffc107;
}

.trend-bar {
    width: 120px;
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
    transition: width 1s ease;
}

/* 页脚 */
.main-footer {
    background: var(--dark);
    color: var(--light);
    padding: 60px 0 30px;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-desc {
    line-height: 1.7;
    color: #bbb;
    margin-bottom: 20px;
}

.footer-copyright {
    font-size: 14px;
    color: #999;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: #bbb;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
}

.contact-info p {
    margin-bottom: 8px;
    color: #bbb;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .stats-overview {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .section-title {
        font-size: 28px;
    }
}