/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.navbar-brand a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

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

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 24px;
}

.navbar-menu ul {
    display: flex;
    list-style: none;
    gap: 8px;
}

.navbar-menu ul li a {
    display: block;
    padding: 8px 16px;
    color: var(--text-color);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.navbar-menu ul li a:hover,
.navbar-menu ul li a.active {
    background-color: var(--primary-color);
    color: white;
}

.login-btn {
    padding: 8px 20px;
    background-color: var(--primary-color);
    color: white !important;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.login-btn:hover {
    background-color: var(--primary-hover);
}

/* 汉堡菜单按钮 */
.navbar-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.navbar-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* 主内容区布局 */
.main-content {
    flex: 1;
    padding: 32px 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 32px;
}

/* 文章列表样式 */
.articles {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.article-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 28px 32px;
    transition: box-shadow 0.2s ease;
}

.article-card:hover {
    box-shadow: var(--shadow-hover);
}

.article-title {
    margin-bottom: 12px;
}

.article-title a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

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

.article-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

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

.article-category a {
    color: var(--text-secondary);
}

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

.article-excerpt {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* 侧边栏样式 */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.widget {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 20px;
}

.widget-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

/* 分类列表 */
.category-list {
    list-style: none;
}

.category-list li {
    border-bottom: 1px solid var(--border-color);
}

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

.category-list li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    color: var(--text-color);
}

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

.category-count {
    background-color: var(--bg-color);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* 子分类 */
.category-list .sub-category {
    padding-left: 20px;
}

/* 标签云 */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-cloud a {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--bg-color);
    border-radius: 16px;
    font-size: 0.875rem;
    color: var(--text-color);
    transition: all 0.2s ease;
}

.tag-cloud a:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 热门文章 */
.hot-articles {
    list-style: none;
}

.hot-articles li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.hot-articles li a {
    color: var(--text-color);
    font-size: 0.9375rem;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hot-articles li a:hover {
    color: var(--primary-color);
}

.hot-articles .view-count {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* 页脚样式 */
.footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    margin-top: auto;
}

.footer-content {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-content p {
    margin: 4px 0;
}

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

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

.powered-by {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .sidebar {
        order: 2;
    }
}

@media (max-width: 768px) {
    .navbar-toggle {
        display: flex;
    }

    .navbar-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--card-bg);
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: var(--shadow);
        gap: 16px;
    }

    .navbar-menu.active {
        display: flex;
    }

    .navbar-menu ul {
        flex-direction: column;
        width: 100%;
    }

    .navbar-menu ul li a {
        display: block;
        width: 100%;
    }

    .login-btn {
        width: 100%;
        text-align: center;
    }

    .article-card {
        padding: 16px;
    }

    .article-title a {
        font-size: 1.125rem;
    }

    .article-meta {
        flex-wrap: wrap;
        gap: 8px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-card {
    animation: fadeIn 0.3s ease;
}

/* 博客文章页面样式 */
.article-page {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 32px;
}

.article-page .article-header {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.article-page .article-title {
    font-size: 1.75rem;
    margin-bottom: 16px;
}

.article-page .article-meta {
    display: flex;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.article-page .article-content {
    line-height: 1.8;
    font-size: 1rem;
    text-align: left;
}

.article-page .article-content h2 {
    font-size: 1.5rem;
    margin: 32px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.article-page .article-content h3 {
    font-size: 1.25rem;
    margin: 24px 0 12px;
}

.article-page .article-content h4 {
    font-size: 1.1rem;
    margin: 20px 0 10px;
}

.article-page .article-content p {
    margin-bottom: 16px;
}

.article-page .article-content ul,
.article-page .article-content ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.article-page .article-content li {
    margin-bottom: 8px;
}

.article-page .article-content code {
    background-color: var(--bg-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "JetBrains Mono", "Fira Code", Consolas, monospace;
    font-size: 0.875em;
}

.article-page .article-content pre {
    background-color: #1e293b;
    color: #e2e8f0;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 16px;
}

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

.article-page .article-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 16px;
    margin: 16px 0;
    color: var(--text-secondary);
}

.article-page .article-content a {
    color: var(--primary-color);
}

.article-page .article-content a:hover {
    text-decoration: underline;
}

.article-page .article-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.article-page .article-content th,
.article-page .article-content td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

.article-page .article-content th {
    background-color: var(--bg-color);
    font-weight: 600;
}

.article-page .article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 16px 0;
}

.article-footer {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.article-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.article-tags a {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--bg-color);
    border-radius: 16px;
    font-size: 0.875rem;
    color: var(--text-color);
}

.article-tags a:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 文章导航 */
.article-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    gap: 16px;
}

.article-nav a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background-color: var(--bg-color);
    border-radius: 8px;
    color: var(--text-color);
    max-width: 45%;
}

.article-nav a:hover {
    background-color: var(--primary-color);
    color: white;
}

.article-nav a span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.article-nav .nav-prev svg {
    transform: rotate(180deg);
}

/* 文章不存在提示 */
.article-not-found {
    text-align: center;
    padding: 60px 20px;
}

.article-not-found h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-color);
    border-bottom: none;
}

.article-not-found p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.article-not-found a {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 6px;
}

.article-not-found a:hover {
    background-color: var(--primary-hover);
}

/* 加载动画 */
.article-loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.article-loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .article-page {
        padding: 16px;
    }

    .article-page .article-title {
        font-size: 1.5rem;
    }

    .article-page .article-meta {
        flex-wrap: wrap;
        gap: 8px;
    }

    .article-nav {
        flex-direction: column;
    }

    .article-nav a {
        max-width: 100%;
    }
}