/* ========================================
   responsive.css - 响应式样式
   ======================================== */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
    .container {
        max-width: 90%;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .articles-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

/* 手机设备 (小于 768px) */
@media (max-width: 768px) {
    /* 导航栏响应式 */
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--bg-primary);
        transition: left var(--transition-base);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-links {
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }
    
    .nav-links a {
        font-size: 1.25rem;
        padding: var(--spacing-sm) 0;
        display: block;
    }
    
    /* 英雄区域 */
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
    }
    
    /* 文章网格 */
    .articles-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    /* 文章详情页 */
    .post-title {
        font-size: 1.75rem;
    }
    
    .post-content {
        font-size: 1rem;
    }
    
    /* 关于区域 */
    .about-card {
        flex-direction: column;
        text-align: center;
    }
    
    .section-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
    
    .filter-tags {
        flex-wrap: wrap;
    }
    
    /* 页脚 */
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    /* 评论区 */
    .comments-section h3 {
        font-size: 1.25rem;
    }
    
    /* 返回顶部按钮 */
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
}

/* 小手机设备 (小于 480px) */
@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .article-card .article-title {
        font-size: 1.125rem;
    }
    
    .tag-btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .post-meta {
        font-size: 0.75rem;
        gap: var(--spacing-sm);
    }
    
    pre {
        font-size: 0.75rem;
        padding: var(--spacing-sm);
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .nav-menu {
        overflow-y: auto;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
}

/* 大屏幕优化 (大于 1400px) */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
    
    .post-container {
        max-width: 900px;
    }
    
    .articles-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
    
    .hero-title {
        font-size: 4rem;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .hero-wave,
    .comments-section,
    .back-to-top,
    .footer {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .post-content {
        font-size: 12pt;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}