/* ============================================
   Nova Blog - 设计师风格主题
   极简、现代、设计感十足
   ============================================ */

/* CSS变量 - 设计令牌 */
:root {
    /* 颜色 */
    --color-bg: #fafafa;
    --color-bg-alt: #ffffff;
    --color-text: #1a1a1a;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-border: #e8e8e8;
    --color-border-light: #f0f0f0;
    --color-primary: #1a1a1a;
    --color-primary-hover: #333333;
    --color-accent: #0066ff;
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', monospace;

    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 40px;
    --space-2xl: 64px;
    --space-3xl: 96px;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.08);
    --shadow-xl: 0 24px 48px rgba(0,0,0,0.12);

    /* 过渡 */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* 布局 */
    --container-width: 1200px;
    --container-narrow: 720px;
    --header-height: 72px;
}

/* 暗黑模式 */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0a0a0a;
        --color-bg-alt: #141414;
        --color-text: #f0f0f0;
        --color-text-secondary: #a0a0a0;
        --color-text-muted: #666666;
        --color-border: #2a2a2a;
        --color-border-light: #1f1f1f;
        --color-primary: #f0f0f0;
        --color-primary-hover: #ffffff;
        --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
        --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
        --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
    }
}

/* 重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

input, button, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

/* 容器 */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg-alt);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    color: var(--color-bg-alt);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-ghost:hover {
    border-color: var(--color-text);
    background: var(--color-bg-alt);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
}

.btn-sm {
    padding: 6px 16px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

/* ============================================
   导航栏
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 250, 250, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

@media (prefers-color-scheme: dark) {
    .site-header {
        background: rgba(10, 10, 10, 0.8);
    }
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo img {
    height: 32px;
    width: auto;
}

.main-nav {
    display: flex;
    gap: var(--space-xl);
}

.main-nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    padding: 4px 0;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.search-form {
    position: relative;
}

.search-form input {
    width: 200px;
    padding: 8px 16px;
    font-size: 13px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.search-form input:focus {
    outline: none;
    border-color: var(--color-text);
    width: 240px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: all var(--transition-fast);
}

/* ============================================
   英雄区
   ============================================ */
.hero-section {
    position: relative;
    padding: var(--space-3xl) 0;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-subtitle {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -2px;
    margin-bottom: var(--space-lg);
}

.hero-desc {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border-light);
}

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

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* 装饰元素 */
.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}

.deco-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.deco-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.deco-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    bottom: -50px;
    left: -50px;
    animation: float 10s ease-in-out infinite reverse;
}

.deco-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(var(--color-border-light) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border-light) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.3;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

/* ============================================
   文章列表
   ============================================ */
.articles-section {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 14px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-xl);
}

.article-card {
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border);
}

.article-cover {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-border-light);
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article-card:hover .article-cover img {
    transform: scale(1.05);
}

.article-body {
    padding: var(--space-lg);
}

.article-category {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

.article-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.3px;
}

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

.article-excerpt {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 12px;
    color: var(--color-text-muted);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.meta-item.price {
    color: var(--color-error);
    font-weight: 600;
}

/* ============================================
   文章详情
   ============================================ */
.single-post {
    padding-bottom: var(--space-3xl);
}

.post-header {
    padding: var(--space-2xl) 0 var(--space-xl);
    text-align: center;
}

.post-category {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-lg);
}

.post-title {
    font-size: clamp(28px, 5vw, 44px);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -1.5px;
    margin-bottom: var(--space-lg);
}

.post-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    font-size: 14px;
    color: var(--color-text-muted);
}

.post-meta .meta-author {
    font-weight: 500;
    color: var(--color-text-secondary);
}

.post-cover {
    margin-bottom: var(--space-xl);
}

.post-cover img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.post-content-wrapper {
    padding: 0 0 var(--space-xl);
}

.post-content {
    font-size: 17px;
    line-height: 1.9;
    color: var(--color-text);
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
    font-weight: 700;
    margin: var(--space-xl) 0 var(--space-md);
    line-height: 1.3;
    letter-spacing: -0.5px;
}

.post-content h1 { font-size: 32px; }
.post-content h2 { font-size: 26px; }
.post-content h3 { font-size: 22px; }
.post-content h4 { font-size: 18px; }

.post-content p {
    margin-bottom: var(--space-lg);
}

.post-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.post-content img {
    border-radius: var(--radius-md);
    margin: var(--space-lg) 0;
    box-shadow: var(--shadow-md);
}

.post-content blockquote {
    border-left: 3px solid var(--color-text);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    background: var(--color-bg-alt);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-border-light);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.post-content pre {
    background: #1a1a1a;
    color: #f0f0f0;
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--space-lg) 0;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
}

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

.post-content ul,
.post-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

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

.post-content li {
    margin-bottom: var(--space-sm);
}

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

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

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

/* 标签 */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin: var(--space-xl) 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
}

.tag {
    display: inline-block;
    padding: 6px 16px;
    font-size: 13px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--color-text);
    color: var(--color-bg-alt);
    border-color: var(--color-text);
}

/* 下载框 */
.download-box {
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    margin: var(--space-xl) 0;
}

.download-box h4 {
    font-size: 18px;
    margin-bottom: var(--space-md);
}

.download-price {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.download-price .price {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-error);
}

.download-tip {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

/* 分享 */
.post-share {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border-light);
    font-size: 14px;
    color: var(--color-text-muted);
}

.share-link {
    padding: 4px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 13px;
}

.share-link:hover {
    background: var(--color-text);
    color: var(--color-bg-alt);
    border-color: var(--color-text);
}

/* 上下篇 */
.post-navigation {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border-light);
}

.post-navigation .container-narrow {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.nav-prev,
.nav-next {
    display: block;
    padding: var(--space-lg);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.nav-prev:hover,
.nav-next:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-md);
}

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

.nav-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-xs);
}

.nav-title {
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
}

/* ============================================
   页面
   ============================================ */
.page-wrapper {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

.page-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.page-title {
    font-size: clamp(28px, 5vw, 44px);
    font-weight: 700;
    letter-spacing: -1.5px;
}

.page-content {
    font-size: 17px;
    line-height: 1.9;
}

.page-content h1,
.page-content h2,
.page-content h3 {
    margin: var(--space-xl) 0 var(--space-md);
    font-weight: 700;
}

/* ============================================
   登录注册
   ============================================ */
.auth-page {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-lg);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
}

.auth-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.5px;
}

.auth-subtitle {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 12px 16px;
    font-size: 15px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-text);
    box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: 14px;
    color: var(--color-text-muted);
}

.auth-footer a {
    color: var(--color-text);
    font-weight: 500;
}

/* ============================================
   用户中心
   ============================================ */
.user-center {
    padding: var(--space-xl) 0 var(--space-3xl);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-xl);
}

.user-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.user-info {
    flex: 1;
}

.user-info h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 4px;
}

.user-info p {
    font-size: 14px;
    color: var(--color-text-muted);
}

.user-badges {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
}

.badge-vip {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.badge-admin {
    background: var(--color-error);
    color: white;
}

.user-tabs {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.tab-nav {
    display: flex;
    border-bottom: 1px solid var(--color-border-light);
}

.tab-btn {
    flex: 1;
    padding: var(--space-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.tab-btn.active {
    color: var(--color-text);
    border-bottom-color: var(--color-text);
}

.tab-content {
    display: none;
    padding: var(--space-xl);
}

.tab-content.active {
    display: block;
}

.empty-text {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--space-xl) 0;
}

.order-list,
.download-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.order-item,
.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    gap: var(--space-md);
}

.order-info {
    display: flex;
    flex-direction: column;
}

.order-title {
    font-weight: 500;
}

.order-no {
    font-size: 12px;
    color: var(--color-text-muted);
}

.order-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 13px;
}

.order-amount {
    font-weight: 600;
    color: var(--color-error);
}

.order-status {
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
}

.status-0 { background: #fef3c7; color: #92400e; }
.status-1 { background: #d1fae5; color: #065f46; }
.status-2 { background: #fee2e2; color: #991b1b; }

.vip-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.vip-card {
    padding: var(--space-xl);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.vip-card.featured {
    border-color: var(--color-warning);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
    transform: scale(1.02);
}

.vip-card h4 {
    font-size: 16px;
    margin-bottom: var(--space-sm);
}

.vip-price {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.vip-price span {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text-muted);
}

.vip-card ul {
    text-align: left;
    margin-bottom: var(--space-lg);
}

.vip-card li {
    font-size: 13px;
    color: var(--color-text-secondary);
    padding: 4px 0;
}

.vip-card li::before {
    content: '✓ ';
    color: var(--color-success);
    font-weight: 700;
}

/* ============================================
   搜索页
   ============================================ */
.search-section {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

.search-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.search-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.search-form-large {
    display: flex;
    max-width: 560px;
    margin: 0 auto var(--space-lg);
    gap: var(--space-sm);
}

.search-form-large input {
    flex: 1;
    padding: 14px 20px;
    font-size: 16px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
}

.search-form-large input:focus {
    outline: none;
    border-color: var(--color-text);
}

.search-count {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ============================================
   归档页
   ============================================ */
.archive-section {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

.archive-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.archive-title {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: var(--space-sm);
}

.archive-count {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ============================================
   404页面
   ============================================ */
.error-page {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.error-code {
    font-size: clamp(80px, 15vw, 160px);
    font-weight: 800;
    letter-spacing: -4px;
    line-height: 1;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.error-message {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

/* ============================================
   分页
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--space-2xl);
}

.pagination ul {
    display: flex;
    gap: var(--space-sm);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-md);
    font-size: 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    border-color: var(--color-text);
}

.pagination .active span {
    background: var(--color-text);
    color: var(--color-bg-alt);
    border-color: var(--color-text);
}

/* ============================================
   空状态
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) 0;
    color: var(--color-text-muted);
}

/* ============================================
   闪存消息
   ============================================ */
.flash-message {
    position: fixed;
    top: calc(var(--header-height) + 20px);
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translate(-50%, -20px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

.flash-success {
    background: var(--color-success);
    color: white;
}

.flash-error {
    background: var(--color-error);
    color: white;
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-light);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

.footer-col h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

.footer-col p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.footer-col ul li {
    margin-bottom: var(--space-sm);
}

.footer-col ul a {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.footer-col ul a:hover {
    color: var(--color-text);
}

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

.social-links a {
    font-size: 13px;
    color: var(--color-text-muted);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
    text-align: center;
    font-size: 13px;
    color: var(--color-text-muted);
}

.footer-bottom p {
    margin-bottom: var(--space-xs);
}

/* ============================================
   回到顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-text);
    color: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   动画
   ============================================ */
.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.animate-fade-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* ============================================
   响应式
   ============================================ */
@media (max-width: 992px) {
    .main-nav {
        display: none;
    }

    .search-form {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero-stats {
        gap: var(--space-xl);
    }
}

@media (max-width: 768px) {
    :root {
        --space-3xl: 64px;
        --space-2xl: 40px;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }

    .post-navigation .container-narrow {
        grid-template-columns: 1fr;
    }

    .user-profile {
        flex-direction: column;
        text-align: center;
    }

    .vip-cards {
        grid-template-columns: 1fr;
    }

    .vip-card.featured {
        transform: none;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .nav-actions .btn {
        padding: 8px 16px;
        font-size: 13px;
    }

    .search-form-large {
        flex-direction: column;
    }

    .order-item,
    .download-item {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .back-to-top,
    .post-share,
    .post-navigation {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* 选中文本 */
::selection {
    background: var(--color-text);
    color: var(--color-bg-alt);
}

/* 焦点可见性 */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ============================================
   v2.0 新增样式
   ============================================ */

/* 用户头像下拉菜单 */
.user-dropdown {
    position: relative;
}
.user-avatar-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 50px;
    padding: 6px 12px 6px 6px;
    cursor: pointer;
    transition: all 0.2s;
}
.user-avatar-btn:hover {
    border-color: var(--color-text-muted);
}
.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), #6366f1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}
.user-name {
    font-size: 14px;
    color: var(--color-text);
}
.user-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 8px;
    min-width: 200px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s;
    z-index: 100;
}
.user-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.user-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--color-text);
    text-decoration: none;
    font-size: 14px;
    transition: background 0.15s;
}
.user-dropdown-menu a:hover {
    background: var(--color-bg);
}
.user-dropdown-menu .logout-link {
    color: #ef4444;
}
.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: 6px 0;
}

/* 移动端侧边抽屉菜单 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}
.mobile-menu-overlay.show {
    opacity: 1;
    visibility: visible;
}
.mobile-menu {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background: var(--color-bg-alt);
    z-index: 999;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
    box-shadow: -5px 0 30px rgba(0,0,0,0.1);
}
.mobile-menu.open {
    right: 0;
}
.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
}
.mobile-menu-title {
    font-size: 18px;
    font-weight: 700;
}
.mobile-menu-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    padding: 4px;
}
.mobile-search {
    padding: 16px 20px;
}
.mobile-search input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 14px;
}
.mobile-nav {
    flex: 1;
    overflow-y: auto;
    padding: 8px 12px;
}
.mobile-nav a {
    display: block;
    padding: 12px 16px;
    color: var(--color-text);
    text-decoration: none;
    border-radius: 8px;
    font-size: 15px;
    transition: background 0.15s;
}
.mobile-nav a:hover {
    background: var(--color-bg);
}
.mobile-menu-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.mobile-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}
.btn-block {
    width: 100%;
    justify-content: center;
}

/* 评论系统 */
.comments-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}
.comments-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
}
.comment-form {
    margin-bottom: 32px;
}
.comment-form textarea {
    width: 100%;
    min-height: 100px;
    padding: 14px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 14px;
    resize: vertical;
    font-family: inherit;
}
.comment-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}
.comment-form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}
.comment-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.comment-item {
    display: flex;
    gap: 14px;
}
.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), #6366f1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
    flex-shrink: 0;
}
.comment-body {
    flex: 1;
}
.comment-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}
.comment-author {
    font-weight: 600;
    font-size: 14px;
}
.comment-time {
    font-size: 12px;
    color: var(--color-text-muted);
}
.comment-content {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text);
}
.comment-actions {
    margin-top: 8px;
    display: flex;
    gap: 16px;
}
.comment-actions button {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 12px;
    cursor: pointer;
    padding: 0;
}
.comment-actions button:hover {
    color: var(--color-accent);
}
.comment-replies {
    margin-top: 16px;
    margin-left: 54px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 分享按钮增强 */
.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}
.share-btn:hover {
    border-color: var(--color-text-muted);
    transform: translateY(-1px);
}
.share-btn.weibo:hover { border-color: #e6162d; color: #e6162d; }
.share-btn.twitter:hover { border-color: #1da1f2; color: #1da1f2; }
.share-btn.qq:hover { border-color: #12b7f5; color: #12b7f5; }
.share-btn.wechat:hover { border-color: #07c160; color: #07c160; }

/* 编辑器组件 */
.builder-editor {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
}
.builder-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 12px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}
.builder-toolbar button {
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg-alt);
    color: var(--color-text);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}
.builder-toolbar button:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.builder-canvas {
    min-height: 400px;
    padding: 20px;
    background: var(--color-bg-alt);
}
.builder-block {
    position: relative;
    margin-bottom: 12px;
    padding: 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    cursor: move;
}
.builder-block:hover {
    border-color: var(--color-accent);
}
.builder-block-actions {
    position: absolute;
    top: 8px;
    right: 8px;
    display: none;
    gap: 4px;
}
.builder-block:hover .builder-block-actions {
    display: flex;
}
.builder-block-actions button {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 4px;
    background: var(--color-bg-alt);
    cursor: pointer;
    font-size: 12px;
}

/* 主题卡片 */
.theme-card {
    border: 2px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.2s;
    cursor: pointer;
}
.theme-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}
.theme-card.active {
    border-color: var(--color-accent);
}
.theme-preview {
    height: 180px;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
}
.theme-info {
    padding: 16px;
}
.theme-name {
    font-weight: 600;
    margin-bottom: 4px;
}
.theme-desc {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* 插件卡片 */
.plugin-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    margin-bottom: 12px;
}
.plugin-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-accent), #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    flex-shrink: 0;
}
.plugin-info {
    flex: 1;
}
.plugin-name {
    font-weight: 600;
    margin-bottom: 2px;
}
.plugin-desc {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .user-avatar-btn .user-name {
        display: none;
    }
    .nav-actions .btn {
        display: none;
    }
    .menu-toggle {
        display: flex !important;
    }
}