/*
Theme Name: Nova
Theme URI: https://github.com/yourname/nova
Description: 融合子比(Zibll)与Joe精华的Typecho多功能主题。内置付费阅读、会员系统、SEO优化、代码高亮、评论增强、深色模式等功能，现代化设计，开箱即用。
Author: Nova Team
Author URI: https://github.com/yourname
Version: 1.0.0
License: GNU General Public License v2.0
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: nova
Tags: 博客, 付费内容, SEO, 响应式, 深色模式, 会员系统, 社区
*/

/* ============================================
   Nova Theme - 核心样式
   融合 Zibll 子比主题 & Joe主题精华功能
   ============================================ */

/* CSS 变量定义 - 支持全局主题色自定义 */
:root {
    --nova-primary: #425AEF;
    --nova-primary-light: #6B7FF3;
    --nova-primary-dark: #2E42D0;
    --nova-primary-rgb: 66, 90, 239;
    --nova-secondary: #FF6B6B;
    --nova-success: #52C41A;
    --nova-warning: #FAAD14;
    --nova-danger: #FF4D4F;
    --nova-info: #1890FF;

    /* 文字颜色 */
    --nova-text-main: #333333;
    --nova-text-secondary: #666666;
    --nova-text-muted: #999999;
    --nova-text-light: #bbbbbb;

    /* 背景颜色 */
    --nova-bg-body: #f5f6fa;
    --nova-bg-card: #ffffff;
    --nova-bg-hover: #f8f9fc;
    --nova-bg-mask: rgba(0, 0, 0, 0.5);

    /* 边框 */
    --nova-border: #ebeef5;
    --nova-border-light: #f2f3f5;

    /* 圆角 */
    --nova-radius-sm: 4px;
    --nova-radius: 8px;
    --nova-radius-lg: 12px;
    --nova-radius-xl: 16px;

    /* 阴影 */
    --nova-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --nova-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    --nova-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* 布局 */
    --nova-header-height: 60px;
    --nova-content-width: 1200px;
    --nova-sidebar-width: 320px;
}

/* 深色模式变量 */
[data-theme="dark"] {
    --nova-text-main: #e0e0e0;
    --nova-text-secondary: #b0b0b0;
    --nova-text-muted: #808080;
    --nova-text-light: #606060;

    --nova-bg-body: #1a1a2e;
    --nova-bg-card: #16213e;
    --nova-bg-hover: #1f2b4d;
    --nova-bg-mask: rgba(0, 0, 0, 0.7);

    --nova-border: #2a2a4a;
    --nova-border-light: #222240;

    --nova-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --nova-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    --nova-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
        sans-serif;
    font-size: 15px;
    line-height: 1.8;
    color: var(--nova-text-main);
    background-color: var(--nova-bg-body);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

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

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

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--nova-radius);
}

ul, ol {
    list-style: none;
}

/* 容器 */
.nova-container {
    max-width: var(--nova-content-width);
    margin: 0 auto;
    padding: 0 15px;
}

/* ============================================
   顶部导航栏
   ============================================ */
.nova-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nova-header-height);
    background: var(--nova-bg-card);
    box-shadow: var(--nova-shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nova-header .nova-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nova-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--nova-text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nova-logo img {
    height: 36px;
    border-radius: 50%;
}

.nova-nav {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nova-nav a {
    padding: 8px 14px;
    border-radius: var(--nova-radius);
    color: var(--nova-text-main);
    font-size: 14px;
    transition: all 0.2s ease;
}

.nova-nav a:hover,
.nova-nav a.current {
    color: var(--nova-primary);
    background: rgba(var(--nova-primary-rgb), 0.08);
}

.nova-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nova-icon-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--nova-bg-hover);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--nova-text-main);
    font-size: 16px;
    transition: all 0.2s ease;
}

.nova-icon-btn:hover {
    background: rgba(var(--nova-primary-rgb), 0.1);
    color: var(--nova-primary);
}

/* 移动端菜单按钮 */
.nova-menu-toggle {
    display: none;
}

/* ============================================
   主体布局
   ============================================ */
.nova-main {
    margin-top: calc(var(--nova-header-height) + 20px);
    padding-bottom: 40px;
}

.nova-layout {
    display: flex;
    gap: 24px;
}

.nova-content {
    flex: 1;
    min-width: 0;
}

.nova-sidebar {
    width: var(--nova-sidebar-width);
    flex-shrink: 0;
}

/* ============================================
   卡片样式
   ============================================ */
.nova-card {
    background: var(--nova-bg-card);
    border-radius: var(--nova-radius-lg);
    box-shadow: var(--nova-shadow-sm);
    padding: 24px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

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

/* ============================================
   文章列表
   ============================================ */
.nova-post-item {
    background: var(--nova-bg-card);
    border-radius: var(--nova-radius-lg);
    box-shadow: var(--nova-shadow-sm);
    margin-bottom: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.nova-post-thumb {
    position: relative;
    overflow: hidden;
    max-height: 350px;
}

.nova-post-thumb img {
    width: 100%;
    border-radius: 0;
    transition: transform 0.5s ease;
}

.nova-post-item:hover .nova-post-thumb img {
    transform: scale(1.05);
}

.nova-post-body {
    padding: 20px 24px;
}

.nova-post-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

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

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

.nova-post-excerpt {
    color: var(--nova-text-secondary);
    font-size: 14px;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.nova-post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 15px;
    font-size: 13px;
    color: var(--nova-text-muted);
}

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

.nova-post-meta a {
    color: var(--nova-text-muted);
}

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

.nova-post-category {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(var(--nova-primary-rgb), 0.1);
    color: var(--nova-primary);
    border-radius: var(--nova-radius-sm);
    font-size: 12px;
}

/* ============================================
   文章详情页
   ============================================ */
.nova-article {
    background: var(--nova-bg-card);
    border-radius: var(--nova-radius-lg);
    box-shadow: var(--nova-shadow-sm);
    padding: 30px;
}

.nova-article-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.4;
}

.nova-article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    color: var(--nova-text-muted);
    font-size: 13px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--nova-border-light);
    margin-bottom: 25px;
}

.nova-article-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--nova-text-main);
}

.nova-article-content h1,
.nova-article-content h2,
.nova-article-content h3,
.nova-article-content h4,
.nova-article-content h5,
.nova-article-content h6 {
    margin: 24px 0 16px;
    font-weight: 600;
    line-height: 1.4;
}

.nova-article-content h1 { font-size: 24px; }
.nova-article-content h2 { font-size: 22px; }
.nova-article-content h3 { font-size: 20px; }
.nova-article-content h4 { font-size: 18px; }

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

.nova-article-content blockquote {
    border-left: 4px solid var(--nova-primary);
    background: rgba(var(--nova-primary-rgb), 0.05);
    padding: 12px 20px;
    margin: 16px 0;
    border-radius: 0 var(--nova-radius) var(--nova-radius) 0;
    color: var(--nova-text-secondary);
}

.nova-article-content pre {
    background: #2d2d3f;
    color: #f8f8f2;
    padding: 16px;
    border-radius: var(--nova-radius);
    overflow-x: auto;
    margin: 16px 0;
    font-size: 14px;
    line-height: 1.6;
}

.nova-article-content code {
    background: rgba(var(--nova-primary-rgb), 0.1);
    color: var(--nova-primary);
    padding: 2px 6px;
    border-radius: var(--nova-radius-sm);
    font-size: 14px;
    font-family: "Fira Code", Consolas, Monaco, monospace;
}

.nova-article-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

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

.nova-article-content ul { list-style: disc; }
.nova-article-content ol { list-style: decimal; }

.nova-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.nova-article-content table th,
.nova-article-content table td {
    padding: 10px 14px;
    border: 1px solid var(--nova-border);
    text-align: left;
}

.nova-article-content table th {
    background: var(--nova-bg-hover);
    font-weight: 600;
}

/* 文章目录 */
.nova-toc {
    background: var(--nova-bg-hover);
    border-radius: var(--nova-radius);
    padding: 16px 20px;
    margin: 20px 0;
    font-size: 14px;
}

.nova-toc-title {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--nova-text-main);
}

.nova-toc ul {
    padding-left: 16px;
}

.nova-toc a {
    color: var(--nova-text-secondary);
}

.nova-toc a:hover,
.nova-toc a.active {
    color: var(--nova-primary);
}

/* 文章标签 */
.nova-post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0;
}

.nova-post-tags a {
    padding: 4px 12px;
    background: var(--nova-bg-hover);
    border-radius: 20px;
    font-size: 13px;
    color: var(--nova-text-secondary);
    transition: all 0.2s ease;
}

.nova-post-tags a:hover {
    background: var(--nova-primary);
    color: #fff;
}

/* 文章操作栏 */
.nova-post-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 20px 0;
    border-top: 1px solid var(--nova-border-light);
    margin-top: 20px;
}

.nova-action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    border: none;
    background: var(--nova-bg-hover);
    border-radius: 20px;
    cursor: pointer;
    color: var(--nova-text-secondary);
    font-size: 14px;
    transition: all 0.2s ease;
}

.nova-action-btn:hover,
.nova-action-btn.active {
    background: var(--nova-primary);
    color: #fff;
}

/* ============================================
   侧边栏
   ============================================ */
.nova-widget {
    background: var(--nova-bg-card);
    border-radius: var(--nova-radius-lg);
    box-shadow: var(--nova-shadow-sm);
    padding: 20px;
    margin-bottom: 20px;
}

.nova-widget-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--nova-primary);
    display: inline-block;
}

/* 作者信息卡片 */
.nova-author-card {
    text-align: center;
    padding: 20px;
}

.nova-author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 12px;
    border: 3px solid rgba(var(--nova-primary-rgb), 0.2);
}

.nova-author-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
}

.nova-author-desc {
    font-size: 13px;
    color: var(--nova-text-muted);
}

/* 最新文章列表 */
.nova-widget-post {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--nova-border-light);
}

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

.nova-widget-post-thumb {
    width: 80px;
    height: 60px;
    border-radius: var(--nova-radius);
    object-fit: cover;
    flex-shrink: 0;
}

.nova-widget-post-info {
    flex: 1;
    min-width: 0;
}

.nova-widget-post-title {
    font-size: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.nova-widget-post-title a {
    color: var(--nova-text-main);
}

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

.nova-widget-post-meta {
    font-size: 12px;
    color: var(--nova-text-muted);
    margin-top: 4px;
}

/* 分类列表 */
.nova-category-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--nova-border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.nova-category-list a {
    color: var(--nova-text-main);
}

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

.nova-category-count {
    background: var(--nova-bg-hover);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 12px;
    color: var(--nova-text-muted);
}

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

.nova-tag-cloud a {
    padding: 4px 12px;
    background: var(--nova-bg-hover);
    border-radius: var(--nova-radius-sm);
    font-size: 13px;
    color: var(--nova-text-secondary);
    transition: all 0.2s ease;
}

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

/* ============================================
   评论区
   ============================================ */
.nova-comments {
    background: var(--nova-bg-card);
    border-radius: var(--nova-radius-lg);
    box-shadow: var(--nova-shadow-sm);
    padding: 24px;
    margin-top: 20px;
}

.nova-comments-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.nova-comment-form textarea {
    width: 100%;
    min-height: 120px;
    padding: 12px;
    border: 1px solid var(--nova-border);
    border-radius: var(--nova-radius);
    background: var(--nova-bg-hover);
    color: var(--nova-text-main);
    resize: vertical;
    font-size: 14px;
    margin-bottom: 12px;
}

.nova-comment-form textarea:focus {
    outline: none;
    border-color: var(--nova-primary);
}

.nova-comment-info {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.nova-comment-info input {
    padding: 10px 12px;
    border: 1px solid var(--nova-border);
    border-radius: var(--nova-radius);
    background: var(--nova-bg-hover);
    color: var(--nova-text-main);
    font-size: 14px;
}

.nova-comment-info input:focus {
    outline: none;
    border-color: var(--nova-primary);
}

.nova-comment-submit {
    padding: 10px 28px;
    background: var(--nova-primary);
    color: #fff;
    border: none;
    border-radius: var(--nova-radius);
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s ease;
}

.nova-comment-submit:hover {
    background: var(--nova-primary-dark);
}

/* 评论列表 */
.nova-comment-list {
    margin-top: 24px;
}

.nova-comment-item {
    display: flex;
    gap: 12px;
    padding: 16px 0;
    border-bottom: 1px solid var(--nova-border-light);
}

.nova-comment-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    flex-shrink: 0;
}

.nova-comment-body {
    flex: 1;
    min-width: 0;
}

.nova-comment-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.nova-comment-author {
    font-weight: 600;
    font-size: 14px;
}

.nova-comment-date {
    font-size: 12px;
    color: var(--nova-text-muted);
}

.nova-comment-content {
    font-size: 14px;
    color: var(--nova-text-secondary);
    line-height: 1.7;
}

.nova-comment-reply {
    font-size: 12px;
    color: var(--nova-primary);
    cursor: pointer;
    margin-top: 6px;
    display: inline-block;
}

/* ============================================
   分页
   ============================================ */
.nova-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 30px 0;
}

.nova-pagination a,
.nova-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: var(--nova-radius);
    background: var(--nova-bg-card);
    color: var(--nova-text-main);
    font-size: 14px;
    transition: all 0.2s ease;
}

.nova-pagination a:hover {
    background: var(--nova-primary);
    color: #fff;
}

.nova-pagination .current {
    background: var(--nova-primary);
    color: #fff;
}

/* ============================================
   页脚
   ============================================ */
.nova-footer {
    background: var(--nova-bg-card);
    padding: 30px 0;
    text-align: center;
    color: var(--nova-text-muted);
    font-size: 13px;
    border-top: 1px solid var(--nova-border-light);
}

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

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

/* ============================================
   回到顶部 & 工具栏
   ============================================ */
.nova-backtop {
    position: fixed;
    right: 20px;
    bottom: 80px;
    width: 44px;
    height: 44px;
    background: var(--nova-bg-card);
    border-radius: 50%;
    box-shadow: var(--nova-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    border: none;
    color: var(--nova-text-main);
    font-size: 18px;
}

.nova-backtop.show {
    opacity: 1;
    visibility: visible;
}

.nova-backtop:hover {
    background: var(--nova-primary);
    color: #fff;
}

/* 加载进度条 */
.nova-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--nova-primary);
    z-index: 9999;
    width: 0;
    transition: width 0.2s ease;
}

/* ============================================
   404 页面
   ============================================ */
.nova-404 {
    text-align: center;
    padding: 80px 20px;
}

.nova-404-code {
    font-size: 100px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--nova-primary), var(--nova-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.nova-404-text {
    font-size: 20px;
    color: var(--nova-text-secondary);
    margin: 20px 0;
}

/* ============================================
   付费内容遮罩
   ============================================ */
.nova-paid-mask {
    position: relative;
    background: var(--nova-bg-hover);
    border-radius: var(--nova-radius);
    padding: 40px 20px;
    text-align: center;
    margin: 20px 0;
}

.nova-paid-mask-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.nova-paid-mask-text {
    color: var(--nova-text-secondary);
    margin-bottom: 16px;
}

.nova-btn {
    display: inline-block;
    padding: 10px 28px;
    background: var(--nova-primary);
    color: #fff;
    border-radius: var(--nova-radius);
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.nova-btn:hover {
    background: var(--nova-primary-dark);
    color: #fff;
}

.nova-btn-outline {
    background: transparent;
    border: 1px solid var(--nova-primary);
    color: var(--nova-primary);
}

.nova-btn-outline:hover {
    background: var(--nova-primary);
    color: #fff;
}

/* ============================================
   公告栏
   ============================================ */
.nova-notice {
    background: linear-gradient(135deg, rgba(var(--nova-primary-rgb), 0.1), rgba(var(--nova-primary-rgb), 0.05));
    border-left: 4px solid var(--nova-primary);
    padding: 12px 16px;
    border-radius: 0 var(--nova-radius) var(--nova-radius) 0;
    margin-bottom: 20px;
    font-size: 14px;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 992px) {
    .nova-layout {
        flex-direction: column;
    }

    .nova-sidebar {
        width: 100%;
    }

    .nova-nav {
        display: none;
        position: absolute;
        top: var(--nova-header-height);
        left: 0;
        right: 0;
        background: var(--nova-bg-card);
        flex-direction: column;
        padding: 15px;
        box-shadow: var(--nova-shadow);
    }

    .nova-nav.open {
        display: flex;
    }

    .nova-menu-toggle {
        display: flex;
    }
}

@media (max-width: 768px) {
    .nova-article {
        padding: 20px 16px;
    }

    .nova-article-title {
        font-size: 22px;
    }

    .nova-comment-info {
        grid-template-columns: 1fr;
    }

    .nova-post-body {
        padding: 16px;
    }

    .nova-post-title {
        font-size: 18px;
    }
}

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

.nova-animate-fade {
    animation: nova-fadeIn 0.4s ease;
}

/* ============================================
   支付系统扩展样式
   ============================================ */

/* 付费遮罩增强 */
.nova-paid-mask {
    border: 2px dashed var(--nova-border);
    background: var(--nova-bg-hover);
}

.nova-paid-mask .nova-btn {
    margin: 4px;
}

/* 订单表格 */
.nova-card table {
    width: 100%;
    border-collapse: collapse;
}

.nova-card table th,
.nova-card table td {
    padding: 10px;
    text-align: left;
}

.nova-card table th {
    background: var(--nova-bg-hover);
    font-weight: 600;
    font-size: 13px;
}

.nova-card table tr:hover {
    background: var(--nova-bg-hover);
}

/* 社交登录弹窗 */
#novaOAuthModal {
    backdrop-filter: blur(4px);
}

#novaOAuthModal .nova-btn {
    width: 100%;
    text-align: center;
    text-decoration: none;
    display: block;
}

/* 价格标签 */
.nova-price-tag {
    display: inline-block;
    background: linear-gradient(135deg, #FF4D4F, #FF6B6B);
    color: #fff;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

/* 支付成功提示 */
@keyframes nova-slideDown {
    from { opacity: 0; transform: translate(-50%, -20px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

/* 用户中心统计卡片 */
.nova-stat-card {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.nova-stat-item {
    flex: 1;
    background: var(--nova-bg-hover);
    border-radius: var(--nova-radius);
    padding: 15px;
    text-align: center;
}

.nova-stat-num {
    font-size: 24px;
    font-weight: 700;
    color: var(--nova-primary);
}

.nova-stat-label {
    font-size: 12px;
    color: var(--nova-text-muted);
    margin-top: 4px;
}

/* 付费文章标签 */
.nova-post-paid {
    display: inline-block;
    background: var(--nova-danger);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    margin-left: 8px;
}