/**
 * Nine Mi 主题自定义样式
 *
 * 包含额外的自定义CSS样式
 *
 * @package Nine_Mi
 */

/* ========================================
   文章导航样式
   ======================================== */

.post-navigation {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.post-navigation .nav-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.post-navigation .nav-previous,
.post-navigation .nav-next {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.post-navigation .nav-next {
    text-align: right;
}

.post-navigation .nav-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.post-navigation a {
    font-weight: 600;
    color: var(--color-text);
}

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

/* ========================================
   相关文章推荐
   ======================================== */

.related-posts {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.related-posts h3 {
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   归档页面样式
   ======================================== */

.archive-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.archive-title {
    margin-bottom: var(--spacing-md);
}

.archive-description {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
}

.archive-stats {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ========================================
   无搜索结果样式
   ======================================== */

.no-results {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.no-results .page-content {
    max-width: 500px;
    margin: 0 auto;
}

/* ========================================
   特色图片样式
   ======================================== */

.featured-image {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.featured-image figcaption {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: center;
}

/* ========================================
   占位图样式
   ======================================== */

.post-thumbnail-placeholder {
    background: var(--color-background-alt);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-image {
    color: var(--color-text-light);
    opacity: 0.5;
}

/* ========================================
   面包屑导航
   ======================================== */

.breadcrumb {
    padding: var(--spacing-md) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.breadcrumb a {
    color: var(--color-text-light);
}

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

.breadcrumb .separator {
    margin: 0 var(--spacing-sm);
}

/* ========================================
   加载动画
   ======================================== */

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

.post-card {
    animation: fadeInUp 0.5s ease;
}

.posts-grid .post-card:nth-child(1) { animation-delay: 0s; }
.posts-grid .post-card:nth-child(2) { animation-delay: 0.1s; }
.posts-grid .post-card:nth-child(3) { animation-delay: 0.2s; }
.posts-grid .post-card:nth-child(4) { animation-delay: 0.3s; }
.posts-grid .post-card:nth-child(5) { animation-delay: 0.4s; }
.posts-grid .post-card:nth-child(6) { animation-delay: 0.5s; }

/* ========================================
   阅读进度条
   ======================================== */

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--color-primary);
    z-index: 9999;
    transition: width 0.1s ease;
}

/* ========================================
   文章内容样式增强
   ======================================== */

.entry-content {
    max-width: 100%;
}

.entry-content ul,
.entry-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.entry-content ul {
    list-style-type: disc;
}

.entry-content ol {
    list-style-type: decimal;
}

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

.entry-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
}

.entry-content th,
.entry-content td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    text-align: left;
}

.entry-content th {
    background: var(--color-background-alt);
    font-weight: 600;
}

.entry-content tr:hover {
    background: var(--color-background-alt);
}

/* ========================================
   代码块样式
   ======================================== */

.entry-content pre {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background: var(--color-text);
    color: #f8f8f2;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

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

.entry-content code {
    background: var(--color-background-alt);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    font-size: 0.9em;
}

/* ========================================
   搜索表单样式
   ======================================== */

.search-form.focused {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-form.focused input {
    border-color: var(--color-primary);
}

/* ========================================
   图片加载动画
   ======================================== */

img.loading {
    background: var(--color-background-alt);
    animation: pulse 1.5s ease-in-out infinite;
}

img.loaded {
    animation: fadeIn 0.3s ease;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ========================================
   文章导航增强
   ======================================== */

.post-navigation .nav-links {
    margin-top: var(--spacing-lg);
}

.post-navigation .nav-links > div {
    padding: var(--spacing-lg);
    background: var(--color-background-alt);
    border-radius: var(--border-radius);
    transition: var(--transition-base);
}

.post-navigation .nav-links > div:hover {
    background: var(--color-background);
    box-shadow: var(--shadow-md);
}

/* ========================================
   响应式优化
   ======================================== */

@media (max-width: 768px) {
    .post-navigation .nav-links {
        grid-template-columns: 1fr;
    }
    
    .post-navigation .nav-next {
        text-align: left;
    }
    
    .related-posts .posts-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   打印样式增强
   ======================================== */

@media print {
    .post-navigation,
    .related-posts,
    .author-box,
    .post-tags {
        display: none;
    }
    
    .entry-content {
        font-size: 12pt;
    }
    
    .entry-content a {
        text-decoration: underline;
    }
}

/* ========================================
   深色模式支持（可选）
   ======================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #1a1a1a;
        --color-background-alt: #2d2d2d;
        --color-text: #e5e5e5;
        --color-text-light: #a0a0a0;
        --color-border: #3d3d3d;
    }
}

/* ========================================
   404页面样式
   ======================================== */

.error-404 {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.error-404-icon {
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-light);
    opacity: 0.5;
}

.error-404-icon svg {
    width: 120px;
    height: 120px;
}

.error-404 .page-header {
    margin-bottom: var(--spacing-xl);
}

.error-404-search {
    margin: var(--spacing-xl) auto;
    max-width: 500px;
}

.error-404-links {
    margin-top: var(--spacing-xl);
    text-align: left;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.error-404-links ul {
    list-style: none;
    padding: 0;
}

.error-404-links li {
    margin-bottom: var(--spacing-sm);
}

.error-404-links a {
    color: var(--color-primary);
}

.error-404-links a:hover {
    text-decoration: underline;
}

/* ========================================
   搜索结果样式
   ======================================== */

.search-result-count {
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
}

.search-result-item {
    padding: var(--spacing-lg);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    transition: var(--transition-base);
}

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

.search-result-item .post-type {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-background-alt);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.search-result-item .entry-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.search-result-item .entry-title a {
    color: var(--color-text);
    text-decoration: none;
}

.search-result-item .entry-title a:hover {
    color: var(--color-primary);
}

.search-result-item .entry-summary {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
}

.search-result-item .entry-footer {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ========================================
   社交分享按钮
   ======================================== */

.social-share {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.share-label {
    font-weight: 500;
    margin-right: var(--spacing-sm);
}

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

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

/* ========================================
   文章统计信息
   ======================================== */

.post-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.post-stats span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}