/*
Theme Name: 安护送博客主题
Theme URI: https://www.96120.com.cn
Author: 微功夫信息技术
Author URI: https://www.weigongfu.com
Description: 安护送非急救转运博客主题 - 专业企业风格，参考 big-agile.com 设计
Version: 2.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: anhufu-blog
Tags: blog, seo, chinese, professional, enterprise

安护送博客主题 v2.0 - 专业企业风格
*/

/* ============================================
   CSS 变量 - 专业企业配色
   ============================================ */

:root {
    /* 主色调 - 深蓝专业感 */
    --primary-dark: #1a365d;
    --primary: #2c5282;
    --primary-light: #4299e1;
    
    /* 强调色 */
    --accent: #3182ce;
    --accent-hover: #2b6cb0;
    
    /* 中性色 */
    --text-dark: #1a202c;
    --text: #2d3748;
    --text-light: #4a5568;
    --text-muted: #718096;
    
    /* 背景色 */
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --bg-gray: #edf2f7;
    
    /* 边框 */
    --border: #e2e8f0;
    --border-dark: #cbd5e0;
    
    /* 功能色 */
    --success: #38a169;
    --warning: #d69e2e;
    --danger: #e53e3e;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
}

/* ============================================
   基础重置
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
    font-size: 1rem;
    line-height: 1.9;
    color: var(--text);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   排版
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    text-align: justify;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.2s ease;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* ============================================
   布局容器
   ============================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   导航栏
   ============================================ */

.site-header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.site-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    letter-spacing: -0.5px;
}

.site-logo:hover {
    color: var(--primary);
    text-decoration: none;
}

.main-navigation ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.main-navigation a {
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.main-navigation a:hover {
    color: var(--primary);
    background: var(--bg-light);
    text-decoration: none;
}

/* 官网入口按钮 */
.btn-official-site {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: white !important;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    text-decoration: none !important;
    margin-left: var(--spacing-lg);
}

.btn-official-site:hover {
    background: linear-gradient(135deg, var(--accent-hover) 0%, var(--primary) 100%);
    color: white !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none !important;
}

.btn-official-site svg {
    width: 18px;
    height: 18px;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text);
    cursor: pointer;
}

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: white;
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.hero-section .container-narrow {
    max-width: 800px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: white;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    color: rgba(255,255,255,0.95);
}

.hero-cta {
    display: inline-flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.5);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    color: white;
    text-decoration: none;
    border-color: white;
}

/* ============================================
   主要内容区
   ============================================ */

.site-main {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-light);
}

.content-area {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
}

/* ============================================
   文章卡片
   ============================================ */

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.post-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.post-card-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.post-card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card-category {
    display: inline-block;
    background: var(--primary-light);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
    align-self: flex-start;
}

.post-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
    line-height: 1.4;
}

.post-card-title a {
    color: inherit;
    text-decoration: none;
}

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

.post-card-excerpt {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.post-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.post-card-date {
    display: flex;
    align-items: center;
    gap: 6px;
}

.post-card-read-more {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
}

.post-card-read-more:hover {
    color: var(--accent-hover);
}

/* ============================================
   文章详情页
   ============================================ */

.single-post {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
}

.single-post-header {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
}

.single-post-category {
    display: inline-block;
    background: var(--primary-light);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.single-post-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.single-post-meta {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.single-post-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.single-post-content {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text);
}

.single-post-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: var(--spacing-2xl) 0 var(--spacing-lg);
    color: var(--text-dark);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--accent);
}

.single-post-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: var(--spacing-xl) 0 var(--spacing-md);
    color: var(--text-dark);
}

.single-post-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.single-post-content p {
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.single-post-content ul,
.single-post-content ol {
    margin: var(--spacing-lg) 0 var(--spacing-lg) var(--spacing-xl);
}

.single-post-content li {
    margin-bottom: var(--spacing-sm);
}

.single-post-content blockquote {
    border-left: 4px solid var(--accent);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    background: var(--bg-light);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-light);
}

.single-post-content blockquote strong {
    color: var(--text-dark);
    font-style: normal;
}

.single-post-content strong {
    color: var(--primary-dark);
    font-weight: 600;
}

.single-post-content em {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.single-post-content hr {
    border: none;
    border-top: 2px solid var(--border);
    margin: var(--spacing-2xl) 0;
}

.single-post-content a {
    color: var(--accent);
    text-decoration: underline;
}

.single-post-content a:hover {
    color: var(--accent-hover);
}

.single-post-content img {
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-md);
}

.single-post-content pre {
    background: var(--text-dark);
    color: #f8f8f2;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

.single-post-content code {
    background: var(--bg-gray);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-family: "Fira Code", "Consolas", monospace;
}

.single-post-content pre code {
    background: none;
    padding: 0;
}

/* 文章标签 */
.post-tags {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.post-tags-title {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.post-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.post-tag {
    background: var(--bg-gray);
    color: var(--text-light);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.post-tag:hover {
    background: var(--accent);
    color: white;
    text-decoration: none;
}

/* ============================================
   分页
   ============================================ */

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    color: var(--text);
    font-weight: 500;
    transition: all 0.2s ease;
}

.pagination a:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    text-decoration: none;
}

.pagination .current {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ============================================
   页脚
   ============================================ */

.site-footer {
    background: var(--primary-dark);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.footer-section p,
.footer-section a {
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

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

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

@media (max-width: 768px) {
    .site-header .container {
        height: auto;
        padding: var(--spacing-md) 0;
        flex-wrap: wrap;
    }

    .menu-toggle {
        display: block;
    }

    .main-navigation {
        display: none;
        width: 100%;
        margin-top: var(--spacing-md);
        order: 3;
    }

    .main-navigation.active {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .btn-official-site {
        order: 2;
        margin-left: 0;
        margin-top: var(--spacing-md);
        width: 100%;
        justify-content: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .single-post {
        padding: var(--spacing-lg);
    }

    .single-post-title {
        font-size: 1.75rem;
    }

    .single-post-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ============================================
   SEO 优化 - 隐藏元素
   ============================================ */

.post-author,
.author-name,
.byline,
.comments-area,
.comment-list,
.comment-form,
.widget-area,
.sidebar {
    display: none !important;
}

/* ============================================
   动画效果
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.post-card,
.single-post {
    animation: fadeIn 0.5s ease-out;
}

/* ============================================
   工具类
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* ============================================
   打印样式
   ============================================ */

@media print {
    .site-header,
    .site-footer,
    .main-navigation,
    .pagination,
    .hero-section {
        display: none;
    }

    .single-post {
        box-shadow: none;
        padding: 0;
    }

    body {
        background: white;
    }
}