/*
Theme Name: Modern Blog
Theme URI: https://example.com/modern-blog
Author: Your Name
Author URI: https://example.com
Description: 一个简约而现代的WordPress个人博客主题，具有独特的原创设计、响应式布局和丰富的自定义选项。包含文章分类、标签、评论、归档、搜索等核心功能。
Version: 1.0.0
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: modern-blog
Tags: blog, custom-menu, featured-images, threaded-comments, translation-ready, responsive-layout, custom-logo, custom-colors, custom-header, editor-style, sticky-post

Modern Blog is a minimalist WordPress theme perfect for personal blogging.
*/

/* ========================================
   1. RESET & BASE STYLES
   ======================================== */

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

:root {
    /* 主题主色调 - 深蓝紫 */
    --primary-color: #2D3561;
    --secondary-color: #C05C7E;
    --accent-color: #F4C430;
    
    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-dark: #1A1D29;
    
    /* 文字颜色 */
    --text-primary: #2D3561;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --text-white: #FFFFFF;
    
    /* 边框和分隔线 */
    --border-color: #E5E7EB;
    --border-radius: 8px;
    
    /* 字体 */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    
    /* 过渡动画 */
    --transition: all 0.3s ease;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover,
a:focus {
    color: var(--secondary-color);
    text-decoration: underline;
}

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

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

ul, ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   2. LAYOUT
   ======================================== */

.wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.site-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.content-area {
    max-width: 800px;
    margin: 0 auto;
}

/* ========================================
   3. HEADER & NAVIGATION
   ======================================== */

.site-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #3D4A7D 100%);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.custom-logo-link {
    display: block;
    transition: var(--transition);
}

.custom-logo-link:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.custom-logo {
    max-height: 50px;
    width: auto;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin: 0;
}

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

.site-title a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

.site-description {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-weight: 300;
}

/* 主导航 */
.main-navigation {
    display: flex;
    gap: var(--spacing-md);
}

.menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-sm);
}

.menu-item {
    position: relative;
}

.menu-item a {
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    display: block;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.menu-item a:hover,
.menu-item.current-menu-item > a {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--accent-color);
    text-decoration: none;
}

/* 移动端导航 */
.menu-toggle {
    display: none;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid var(--text-white);
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* ========================================
   4. POSTS & CONTENT
   ======================================== */

.post-container {
    margin-bottom: var(--spacing-xl);
}

.post {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.post:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.post-header {
    position: relative;
}

.post-thumbnail {
    width: 100%;
    height: 300px;
    object-fit: cover;
    background: var(--bg-secondary);
}

.post-thumbnail-link {
    display: block;
    overflow: hidden;
}

.post-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

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

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

.entry-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.post-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.post-meta-item a {
    color: var(--text-light);
    transition: var(--transition);
}

.post-meta-item a:hover {
    color: var(--secondary-color);
}

.post-content {
    padding: var(--spacing-md);
}

.entry-content {
    font-size: 1.0625rem;
    line-height: 1.8;
}

.entry-content p {
    margin-bottom: var(--spacing-md);
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.entry-content ul,
.entry-content ol {
    margin-bottom: var(--spacing-md);
}

.entry-content img {
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
}

.entry-content blockquote {
    border-left: 4px solid var(--secondary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.entry-content code {
    background: var(--bg-secondary);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.entry-content pre {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.entry-content pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

.read-more-link {
    display: inline-block;
    margin-top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary-color);
    color: var(--text-white);
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

.read-more-link:hover {
    background: var(--secondary-color);
    color: var(--text-white);
    text-decoration: none;
    transform: translateX(5px);
}

/* 文章标签和分类 */
.post-taxonomy {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.post-categories,
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.taxonomy-links {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 0.875rem;
    transition: var(--transition);
}

.taxonomy-links:hover {
    background: var(--primary-color);
    color: var(--text-white);
    text-decoration: none;
}

/* ========================================
   5. PAGINATION
   ======================================== */

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-xl) 0;
}

.page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.page-numbers:hover,
.page-numbers.current {
    background: var(--primary-color);
    color: var(--text-white);
    text-decoration: none;
}

.page-numbers.dots {
    background: transparent;
    color: var(--text-light);
}

/* ========================================
   6. COMMENTS
   ======================================== */

.comments-area {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.comments-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.comment-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.comment {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.comment-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.avatar {
    border-radius: 50%;
    width: 40px;
    height: 40px;
}

.comment-author {
    font-weight: 600;
    color: var(--primary-color);
}

.comment-date {
    font-size: 0.875rem;
    color: var(--text-light);
}

.comment-content {
    color: var(--text-secondary);
}

.comment-reply-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-color);
    color: var(--text-white);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.comment-reply-link:hover {
    background: var(--secondary-color);
    color: var(--text-white);
    text-decoration: none;
}

/* ========================================
   7. WIDGETS & SIDEBAR
   ======================================== */

.widget-area {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.widget {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.widget-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--accent-color);
}

.widget ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.widget li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-color);
}

.widget li:last-child {
    border-bottom: none;
}

/* ========================================
   8. FOOTER
   ======================================== */

.site-footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

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

.footer-widget {
    color: var(--text-light);
}

.footer-widget-title {
    color: var(--text-white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-widget a {
    color: var(--text-light);
    transition: var(--transition);
}

.footer-widget a:hover {
    color: var(--accent-color);
}

.site-info {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

/* ========================================
   9. SEARCH
   ======================================== */

.search-form {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.search-field {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
}

.search-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 53, 97, 0.1);
}

.search-submit {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.search-submit:hover {
    background: var(--secondary-color);
}

/* ========================================
   10. SOCIAL MEDIA
   ======================================== */

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--text-primary);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--text-white);
    transform: translateY(-2px);
}

/* ========================================
   11. RESPONSIVE DESIGN
   ======================================== */

@media screen and (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    
    .header-wrapper {
        flex-wrap: wrap;
    }
    
    .main-navigation {
        width: 100%;
        display: none;
        margin-top: var(--spacing-sm);
    }
    
    .main-navigation.toggled {
        display: block;
    }
    
    .menu {
        flex-direction: column;
        gap: 0;
    }
    
    .menu-item a {
        width: 100%;
        padding: var(--spacing-sm);
    }
    
    .menu-toggle {
        display: block;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .content-area {
        padding: 0 var(--spacing-sm);
    }
    
    .widget-area {
        grid-template-columns: 1fr;
    }
    
    .footer-widgets {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 480px) {
    .post-thumbnail {
        height: 200px;
    }
    
    .site-title {
        font-size: 1.25rem;
    }
    
    .entry-content {
        font-size: 1rem;
    }
}

/* ========================================
   12. UTILITIES
   ======================================== */

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

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.hidden {
    display: none;
}

.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
    word-wrap: normal !important;
}

/* ========================================
   13. CUSTOMIZATIONS (用户可自定义)
   ======================================== */

/* 示例：自定义主色调 */
/* .theme-color-blue {
    --primary-color: #1E40AF;
    --secondary-color: #3B82F6;
    --accent-color: #60A5FA;
} */

/* 示例：自定义字体 */
/* .theme-font-serif {
    --font-primary: Georgia, 'Times New Roman', serif;
} */