/**
 * 静语主题样式表
 * 
 * @package 静语主题
 * @author 静语
 * @version 1.0.0
 */

/* 基础变量 */
:root {
    /* 字体 */
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 颜色 */
    --color-primary: #667eea;
    --color-primary-dark: #764ba2;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-text-muted: #7a7a7a;
    --color-bg-primary: #fefefe;
    --color-bg-secondary: #f8f9fa;
    --color-border: #e9ecef;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    line-height: 1.7;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text-secondary);
    background: linear-gradient(135deg, #f5f7fa 0%, #e9ecef 100%);
    min-height: 100vh;
}

/* 链接样式 */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--color-primary-dark);
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--color-text-primary);
    font-weight: 500;
    line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

/* 站点包装器 */
.site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-branding .site-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 500;
    margin: 0;
}

.site-branding .site-title a {
    color: var(--color-text-primary);
}

.site-branding .site-description {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

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

/* 导航菜单 */
.site-navigation .nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.site-navigation .nav-menu a {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.site-navigation .nav-menu a:hover,
.site-navigation .nav-menu .current a {
    color: var(--color-primary);
}

.site-navigation .nav-menu .current a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
}

/* 主容器 */
.main-container {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    flex: 1;
}

/* 主内容区 - 80% */
.main-content {
    width: 80%;
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xxl);
}

/* 侧边栏 - 20% */
.site-sidebar {
    width: 20%;
    min-width: 280px;
}

/* 文章项 */
.post-item {
    margin-bottom: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
    border-bottom: 1px solid var(--color-border);
}

.post-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.post-header {
    margin-bottom: var(--spacing-md);
}

.post-title {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.post-title a {
    color: var(--color-text-primary);
}

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

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

.post-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.post-content {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.post-footer .read-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-primary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.post-footer .read-more:hover {
    background: var(--color-primary);
    color: white;
}

/* 分页导航 */
.pagination {
    margin-top: var(--spacing-xxl);
    text-align: center;
}

.page-navigator {
    display: inline-flex;
    gap: var(--spacing-xs);
}

.page-navigator a,
.page-navigator span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.page-navigator a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.page-navigator .current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* 侧边栏小工具 */
.widget {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.widget-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.widget-list {
    list-style: none;
}

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

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

.widget-list a {
    color: var(--color-text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.widget-list a:hover {
    color: var(--color-primary);
}

/* 文章页样式 */
.post-single {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.post-single .post-header {
    padding: var(--spacing-xxl) var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.post-single .post-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.post-single .post-meta {
    justify-content: center;
    font-size: 1rem;
}

.post-single .post-content {
    padding: var(--spacing-xxl);
    font-size: 1.1rem;
    line-height: 1.9;
}

.post-single .post-footer {
    padding: var(--spacing-lg) var(--spacing-xxl);
    border-top: 1px solid var(--color-border);
}

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

.post-nav {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.prev-post,
.next-post {
    flex: 1;
}

.prev-post a,
.next-post a {
    display: block;
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all 0.3s ease;
}

.prev-post a:hover,
.next-post a:hover {
    background: var(--color-primary);
    color: white;
}

/* 评论样式 */
.comments-area {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xxl);
    border-top: 2px solid var(--color-border);
}

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

.comment-list {
    list-style: none;
    margin-bottom: var(--spacing-xxl);
}

.comment-item {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.comment-wrapper {
    display: flex;
    gap: var(--spacing-md);
}

.comment-author {
    flex-shrink: 0;
}

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

.comment-content {
    flex: 1;
}

.comment-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.comment-text {
    line-height: 1.7;
}

.comment-children {
    margin-left: var(--spacing-xl);
    margin-top: var(--spacing-md);
}

/* 评论表单 */
.respond {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.respond-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.comment-form .comment-fields {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.comment-field {
    display: flex;
    flex-direction: column;
}

.comment-field label {
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.comment-field input,
.comment-field textarea {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.comment-field input:focus,
.comment-field textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.comment-field textarea {
    resize: vertical;
    min-height: 120px;
}

.comment-actions {
    text-align: right;
}

.comment-actions .submit {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.comment-actions .submit:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

/* 页脚样式 */
.site-footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

.footer-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-info {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

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

/* 无内容提示 */
.no-content {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--color-text-muted);
}

.no-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

/* 归档页样式 */
.archive-header {
    margin-bottom: var(--spacing-xxl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
    text-align: center;
}

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

.archive-description {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* 独立页面样式 */
.page-single .page-header {
    margin-bottom: var(--spacing-xxl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
    text-align: center;
}

.page-single .page-title {
    font-size: 2.5rem;
}

.page-single .page-content {
    padding: var(--spacing-xxl);
    font-size: 1.1rem;
    line-height: 1.9;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .main-content {
        padding: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
        padding: var(--spacing-md);
    }
    
    .main-content {
        width: 100%;
        padding: var(--spacing-lg);
    }
    
    .site-sidebar {
        width: 100%;
        min-width: auto;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .site-navigation .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .post-single .post-title {
        font-size: 2rem;
    }
    
    .post-nav {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .post-single .post-title {
        font-size: 1.5rem;
    }
    
    .post-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .comment-form .comment-fields {
        grid-template-columns: 1fr;
    }
    
    .comment-wrapper {
        flex-direction: column;
    }
    
    .comment-children {
        margin-left: var(--spacing-lg);
    }
}

/* 打印样式 */
@media print {
    .site-header,
    .site-sidebar,
    .site-footer,
    .comment-actions,
    .post-nav {
        display: none;
    }
    
    .main-content {
        width: 100%;
        box-shadow: none;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* 无障碍访问 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 焦点样式 */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 加载动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.post-item,
.widget {
    animation: fadeIn 0.6s ease forwards;
}

.post-item:nth-child(1) { animation-delay: 0.1s; }
.post-item:nth-child(2) { animation-delay: 0.2s; }
.post-item:nth-child(3) { animation-delay: 0.3s; }