/* ==================== 响应式设计 ==================== */

/* 中等屏幕 (1366px以下) */
@media screen and (max-width: 1400px) {
    .container {
        width: 100%;
        max-width: 1366px;
        margin: 0 auto;
        border-radius: 0;
    }
    
    .header,
    .navbar,
    .search-box,
    .breadcrumb,
    .main-content,
    .footer {
        padding-left: 30px;
        padding-right: 30px;
    }
    
    .sidebar {
        padding-left: 30px;
    }
}

/* 平板设备 (1024px以下) */
@media screen and (max-width: 1024px) {
    .main-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .sidebar {
        flex: none;
        width: 100%;
        border-left: none;
        border-top: 1px solid #e2e8f0;
        padding-left: 0;
        padding-top: 30px;
    }
    
    .sub-class-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .footer-content {
        gap: 30px;
    }
    
    .footer-section {
        min-width: 200px;
    }
}

/* 平板小屏幕 (768px以下) */
@media screen and (max-width: 768px) {
    .header {
        padding: 25px 0;
    }
    
    .logo-area {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .logo {
        margin-right: 0;
        font-size: 28px;
    }
    
    .site-desc {
        font-size: 14px;
    }
    
    .nav-list {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-list a {
        padding: 15px 20px;
        font-size: 14.5px;
    }
    
    .article-detail {
        padding: 25px;
    }
    
    .article-detail .article-title {
        font-size: 24px;
    }
    
    .prev-next {
        flex-direction: column;
        gap: 20px;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
}

/* 手机设备 (480px以下) */
@media screen and (max-width: 480px) {
    .header,
    .navbar,
    .search-box,
    .breadcrumb,
    .main-content,
    .footer {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .logo {
        font-size: 24px;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: stretch;
    }
    
    .nav-list li {
        text-align: center;
    }
    
    .nav-list a {
        padding: 15px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-list li:last-child a {
        border-bottom: none;
    }
    
    .search-form {
        max-width: 100%;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .article-meta span::before {
        display: none;
    }
    
    .article-detail {
        padding: 20px;
    }
    
    .article-detail .article-title {
        font-size: 22px;
    }
    
    .article-content {
        font-size: 15px;
    }
    
    .widget {
        padding: 20px;
    }
    
    .sub-class-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-section {
        min-width: 100%;
    }
    
    .footer-title {
        font-size: 16px;
    }
}

/* 小手机设备 (360px以下) */
@media screen and (max-width: 360px) {
    .header {
        padding: 20px 0;
    }
    
    .logo {
        font-size: 22px;
    }
    
    .site-desc {
        font-size: 13px;
    }
    
    .search-input {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .search-btn {
        padding: 10px 20px;
        min-width: 80px;
        font-size: 14px;
    }
    
    .article-item {
        padding: 20px;
    }
    
    .article-title {
        font-size: 17px;
    }
    
    .article-excerpt {
        font-size: 14px;
    }
    
    .pagination a,
    .pagination span {
        min-width: 32px;
        height: 32px;
        padding: 0 8px;
        font-size: 13px;
    }
}