/**
 * 个人博客样式
 * 极简主义 + 文学气质
 */

/* ========== 变量 ========== */
:root {
  /* 颜色 */
  --color-primary: #1a1a2e;
  --color-secondary: #f4f1eb;
  --color-accent: #c94545;
  --color-text: #333333;
  --color-text-light: #888888;
  --color-border: #e5e5e5;
  --color-white: #ffffff;
  --color-code-bg: #f6f8fa;

  /* 深色模式 */
  --color-bg-dark: #0f1419;
  --color-surface-dark: #1e2428;
  --color-text-dark: #e7e9ea;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-xxl: 60px;

  /* 布局 */
  --max-width: 720px;
  --sidebar-width: 280px;
  --header-height: 70px;

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

  /* 阴影 */
  --shadow-sm: 0 1px 3px 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);
  --shadow-elevated: 0 20px 40px rgba(0, 0, 0, 0.08);

  /* 圆角 */
  --radius-card: 12px;
}

/* ========== 深色模式 ========== */
[data-theme="dark"] {
  --color-primary: #c94545;
  --color-secondary: #0f1419;
  --color-text: #e7e9ea;
  --color-text-light: #8b949e;
  --color-border: #38444d;
  --color-white: #1e2428;
  --color-code-bg: #273038;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-secondary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 纸张纹理背景 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: -1;
}

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

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

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

/* ========== 动画 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 渐变流光动画 */
@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* 打字机光标闪烁 */
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

.fade-in-up:nth-child(1) { animation-delay: 0.1s; }
.fade-in-up:nth-child(2) { animation-delay: 0.2s; }
.fade-in-up:nth-child(3) { animation-delay: 0.3s; }
.fade-in-up:nth-child(4) { animation-delay: 0.4s; }
.fade-in-up:nth-child(5) { animation-delay: 0.5s; }

/* ========== 阅读进度条 ========== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-accent);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ========== 回到顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-smooth);
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

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

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-3px);
}

/* ========== 主题切换按钮 ========== */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: var(--space-sm);
  color: var(--color-text);
  transition: transform var(--transition-smooth);
}

.theme-toggle:hover {
  transform: scale(1.1);
}

/* ========== 代码块复制 ========== */
pre {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--color-text-light);
  color: var(--color-white);
  border: none;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

pre:hover .copy-btn {
  opacity: 1;
}

.copy-btn:hover {
  background: var(--color-accent);
}

/* ========== 毛玻璃卡片 ========== */
.post-card,
.sidebar-widget,
.article-detail,
.page-detail {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.06),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

[data-theme="dark"] .post-card,
[data-theme="dark"] .sidebar-widget,
[data-theme="dark"] .article-detail,
[data-theme="dark"] .page-detail {
  background: rgba(30, 36, 40, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.post-card {
  border-radius: var(--radius-card);
  transform-style: preserve-3d;
  perspective: 1000px;
}

.post-card:hover {
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.1),
    0 0 0 1px rgba(201, 69, 69, 0.1);
  transform: translateY(-8px) rotateX(2deg) rotateY(-2deg);
}

.sidebar-widget {
  border-radius: var(--radius-card);
}

/* ========== 渐变流光标题 ========== */
.hero h1 {
  background: linear-gradient(
    120deg,
    var(--color-primary) 0%,
    var(--color-accent) 25%,
    var(--color-primary) 50%,
    var(--color-accent) 75%,
    var(--color-primary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 4s ease infinite;
}

/* 打字机光标 */
.typewriter-cursor {
  display: inline-block;
  animation: blink 1s infinite;
  color: var(--color-accent);
}

/* 英雄区域 */
.hero {
  text-align: center;
  padding: var(--space-xxl) 0;
  margin-bottom: var(--space-xl);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  margin-bottom: var(--space-md);
  letter-spacing: 8px;
  min-height: 3rem;
}

.hero p {
  color: var(--color-text-light);
  font-size: 1.1rem;
}

/* ========== 3D 悬浮光影 ========== */
.post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-card);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.4) 0%,
    transparent 50%,
    rgba(201, 69, 69, 0.05) 100%
  );
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.post-card:hover::before {
  opacity: 1;
}

/* ========== 霓虹边框效果 ========== */
.post-card:hover {
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.1),
    0 0 20px rgba(201, 69, 69, 0.3),
    0 0 40px rgba(201, 69, 69, 0.1),
    inset 0 0 20px rgba(201, 69, 69, 0.05);
  border-color: rgba(201, 69, 69, 0.3);
}

.sidebar-widget:hover {
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.08),
    0 0 15px rgba(201, 69, 69, 0.15);
  border-color: rgba(201, 69, 69, 0.2);
}

/* 导航链接霓虹效果 */
.main-nav a:hover {
  text-shadow: 0 0 10px var(--color-accent), 0 0 20px var(--color-accent);
}

/* 标签霓虹 */
.tag:hover {
  box-shadow: 0 0 10px var(--color-accent);
}

/* ========== CRT 显示器扫描线效果 ========== */
.crt-effect::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.03) 0px,
    rgba(0, 0, 0, 0.03) 1px,
    transparent 1px,
    transparent 2px
  );
  pointer-events: none;
  z-index: 9998;
}

.crt-effect::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    rgba(0, 0, 0, 0.1) 100%
  );
  pointer-events: none;
  z-index: 9997;
}

/* ========== 电影颗粒感 ========== */
.film-grain::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  right: -50%;
  bottom: -50%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.04;
  pointer-events: none;
  z-index: 9996;
  animation: grain 0.5s steps(1) infinite;
}

@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-1%, -1%); }
  20% { transform: translate(1%, 1%); }
  30% { transform: translate(-1%, 1%); }
  40% { transform: translate(1%, -1%); }
  50% { transform: translate(-1%, 0); }
  60% { transform: translate(1%, 0); }
  70% { transform: translate(0, -1%); }
  80% { transform: translate(0, 1%); }
  90% { transform: translate(-1%, -1%); }
}

/* ========== 视差滚动 ========== */
.parallax-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -2;
  background: 
    radial-gradient(circle at 20% 30%, rgba(201, 69, 69, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(26, 26, 46, 0.05) 0%, transparent 50%);
  transition: transform 0.1s ease-out;
}

/* 视差元素 */
.parallax-element {
  transition: transform 0.1s ease-out;
  will-change: transform;
}

/* ========== 鼠标尾迹 ========== */
.mouse-trail {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s;
  mix-blend-mode: difference;
}

.mouse-trail.active {
  opacity: 0.6;
}

/* 粒子容器 */
.particle-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0.3;
  transition: all 0.5s ease;
}

.particle-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.1;
  transform-origin: left center;
}

/* ========== 页面切换动画 ========== */
.page-transition-enter {
  animation: pageIn 0.4s ease forwards;
}

.page-transition-exit {
  animation: pageOut 0.3s ease forwards;
}

@keyframes pageIn {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pageOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-30px);
  }
}

/* 淡入效果 */
.fade-in {
  animation: fadeInEffect 0.5s ease forwards;
}

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

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

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

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

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

/* Firefox 滚动条 */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-text-light) var(--color-secondary);
}

/* ========== 选中文字样式 ========== */
::selection {
  background: var(--color-accent);
  color: var(--color-white);
}

::-moz-selection {
  background: var(--color-accent);
  color: var(--color-white);
}

/* ========== 幻灯片模式 ========== */
.slideshow-mode {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-primary);
  z-index: 10000;
  display: none;
  overflow: hidden;
}

.slideshow-mode.active {
  display: flex;
  flex-direction: column;
}

.slideshow-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xxl);
  max-width: 900px;
  margin: 0 auto;
  animation: slideIn 0.5s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.slideshow-nav {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-md);
}

.slideshow-nav button {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slideshow-nav button:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.slideshow-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.slideshow-close:hover {
  opacity: 1;
}

.slideshow-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

/* ========== 全屏阅读模式 ========== */
.fullscreen-reading {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-secondary);
  z-index: 9999;
  display: none;
  overflow-y: auto;
}

.fullscreen-reading.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.fullscreen-reading .article-content {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-xxl);
}

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

.fullscreen-close {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  z-index: 10000;
}

/* ========== 文章目录导航 ========== */
.toc-nav {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: none;
}

.toc-nav.visible {
  display: block;
}

.toc-nav ul {
  list-style: none;
}

.toc-nav li {
  margin-bottom: 8px;
}

.toc-nav a {
  display: block;
  width: 8px;
  height: 8px;
  background: var(--color-text-light);
  border-radius: 50%;
  transition: all var(--transition-fast);
  opacity: 0.4;
}

.toc-nav a:hover,
.toc-nav a.active {
  background: var(--color-accent);
  opacity: 1;
  transform: scale(1.3);
}

/* ========== 键盘快捷键提示 ========== */
.keyboard-hint {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  opacity: 0.8;
  z-index: 100;
  pointer-events: none;
  transition: opacity 0.3s;
}

.keyboard-hint kbd {
  background: rgba(255, 255, 255, 0.2);
  padding: 2px 6px;
  border-radius: 3px;
  margin: 0 2px;
}

/* ========== 优化的响应式 ========== */
@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}

/* ========== 容器 ========== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container.with-sidebar {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-xl);
  align-items: start;
}

/* ========== 头部 ========== */
.site-header {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  height: var(--header-height);
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

[data-theme="dark"] .site-header {
  background: rgba(15, 20, 25, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  position: relative;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 2px;
}

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

.main-nav {
  display: flex;
  gap: var(--space-lg);
  position: absolute;
  right: 0;
}

.main-nav a {
  font-size: 0.95rem;
  color: var(--color-text-light);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-normal);
}

.main-nav a:hover::after {
  width: 100%;
}

/* ========== 主内容区 ========== */
.main-content {
  padding: var(--space-xxl) 0;
  min-height: calc(100vh - var(--header-height) - 200px);
}

/* ========== 文章卡片 ========== */
.post-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.post-card {
  background: var(--color-white);
  padding: var(--space-xl);
  border-radius: 4px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.post-meta .category {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 2px 10px;
  border-radius: 2px;
  font-size: 0.75rem;
}

.post-card h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.post-card h2 a {
  color: var(--color-primary);
}

.post-card h2 a:hover {
  color: var(--color-accent);
}

.post-card .excerpt {
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.read-more {
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 500;
}

.read-more:hover {
  color: var(--color-primary);
}

/* ========== 文章详情 ========== */
.article-detail {
  background: var(--color-white);
  padding: var(--space-xxl);
  border-radius: 4px;
  box-shadow: var(--shadow-sm);
}

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

.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.article-header h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  line-height: 1.4;
}

.article-tags {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.tag {
  background: var(--color-secondary);
  color: var(--color-text-light);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

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

.article-content {
  max-width: var(--max-width);
  margin: 0 auto;
  line-height: 2;
}

/* ========== 文章内容排版 ========== */
.article-content h1,
.article-content h2,
.article-content h3 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  line-height: 1.4;
}

.article-content h1 { font-size: 1.8rem; }
.article-content h2 { font-size: 1.5rem; }
.article-content h3 { font-size: 1.25rem; }

.article-content p {
  margin-bottom: var(--space-md);
}

.article-content a {
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
}

.article-content a:hover {
  border-bottom-color: var(--color-accent);
}

.article-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin: var(--space-lg) 0;
  color: var(--color-text-light);
  font-style: italic;
}

.article-content code {
  font-family: var(--font-mono);
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
}

.article-content pre {
  background: var(--color-code-bg);
  padding: var(--space-md);
  border-radius: 4px;
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.article-content pre code {
  background: none;
  padding: 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

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

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

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

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

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

.article-footer {
  margin-top: var(--space-xxl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.back-link:hover {
  color: var(--color-accent);
}

/* ========== 归档页 ========== */
.archive-header {
  margin-bottom: var(--space-xl);
}

.archive-header h1 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.archive-header p {
  color: var(--color-text-light);
}

/* ========== 侧边栏 ========== */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
}

.sidebar-widget {
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: 4px;
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.sidebar-widget h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-accent);
}

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

.category-list li {
  margin-bottom: var(--space-sm);
}

.category-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  color: var(--color-text);
  font-size: 0.95rem;
  border-bottom: 1px dashed var(--color-border);
}

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

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

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

.recent-list li {
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px dashed var(--color-border);
}

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

.recent-list a {
  font-size: 0.9rem;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

/* ========== 页面 ========== */
.page-detail {
  background: var(--color-white);
  padding: var(--space-xxl);
  border-radius: 4px;
  box-shadow: var(--shadow-sm);
}

.page-detail h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: var(--space-xl);
  text-align: center;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.page-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-content h1,
.page-content h2,
.page-content h3 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.page-content p {
  margin-bottom: var(--space-md);
}

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

.page-content code {
  font-family: var(--font-mono);
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
}

.page-content pre {
  background: var(--color-code-bg);
  padding: var(--space-md);
  border-radius: 4px;
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.page-content pre code {
  background: none;
  padding: 0;
}

.page-footer {
  margin-top: var(--space-xxl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

/* ========== 错误页 ========== */
.error-page {
  text-align: center;
  padding: var(--space-xxl);
}

.error-page h1 {
  font-family: var(--font-serif);
  font-size: 6rem;
  color: var(--color-border);
  margin-bottom: var(--space-md);
}

.error-page p {
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 4px;
  font-size: 0.95rem;
}

.btn:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

/* ========== 底部 ========== */
.site-footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ========== 空状态 ========== */
.empty {
  text-align: center;
  padding: var(--space-xxl);
  color: var(--color-text-light);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .container.with-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
  }

  .sidebar-widget {
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  :root {
    --space-lg: 16px;
    --space-xl: 24px;
    --space-xxl: 40px;
  }

  .site-header .container {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-md);
  }

  .logo {
    font-size: 1.3rem;
  }

  .main-nav {
    gap: var(--space-md);
  }

  .hero h1 {
    font-size: 1.8rem;
    letter-spacing: 4px;
  }

  .article-header h1 {
    font-size: 1.5rem;
  }

  .article-detail,
  .page-detail {
    padding: var(--space-xl);
  }

  .post-card {
    padding: var(--space-lg);
  }

  .post-card h2 {
    font-size: 1.2rem;
  }
}