@import url(../../../assets/css/fonts.css);

/* ========== CSS 变量 ========== */
:root {
  /* 浅色主题 */
  --bg-primary: rgb(255, 255, 255);
  --bg-secondary: rgb(245, 245, 245);
  --bg-secondary-rgb: 245, 245, 245;
  --bg-sidebar: rgb(248, 249, 250);
  --bg-sidebar-rgb: 248, 249, 250;
  --bg-hover: rgb(233, 236, 239);
  --bg-active: rgb(227, 231, 235);

  --text-primary: rgb(26, 26, 26);
  --text-secondary: rgb(108, 117, 125);
  --text-muted: rgb(173, 181, 189);

  --border-color: rgb(222, 226, 230);
  --border-color-rgb: 222, 226, 230;
  --border-hover: rgb(173, 181, 189);

  --accent: rgb(9, 105, 218);
  --accent-hover: rgb(5, 80, 174);
  --accent-bg: rgb(221, 244, 255);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  --code-bg: rgb(255, 252, 234);
  --code-text: rgb(36, 41, 47);

  --transition: all 0.2s ease;
}

[data-theme="dark"] {
  /* 深色主题 */
  --bg-primary: rgb(30, 30, 30);
  --bg-secondary: rgb(37, 37, 38);
  --bg-secondary-rgb: 37, 37, 38;
  --bg-sidebar: rgb(24, 24, 24);
  --bg-sidebar-rgb: 24, 24, 24;
  --bg-hover: rgb(42, 45, 46);
  --bg-active: rgb(55, 55, 61);

  --text-primary: rgb(246, 248, 250);
  --text-secondary: rgb(157, 157, 157);
  --text-muted: rgb(110, 110, 110);

  --border-color: rgb(62, 62, 66);
  --border-color-rgb: 62, 62, 66;
  --border-hover: rgb(90, 90, 90);

  --accent: rgb(79, 195, 247);
  --accent-hover: rgb(129, 212, 250);
  --accent-bg: rgb(26, 58, 82);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

  --code-bg: rgb(31, 31, 31);
  --code-text: rgb(212, 212, 212);
}

.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}
/* ========== 全局样式 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background 0.3s ease;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family:
    "hm",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-y: auto;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

/* ========== 应用布局 ========== */
.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========== 底部工具栏 ========== */
.toolbar {
  height: 48px;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 33%;
  min-width: 300px;
  background: rgba(var(--bg-secondary-rgb), 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(var(--border-color-rgb), 0.3);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
  z-index: 999; /* Below sidebar, but above content */
  transition:
    background 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease,
    transform 0.3s ease;
}

@media (min-width: 769px) {
  .toolbar:hover {
    transform: translateX(-50%) scale(1.02);
    box-shadow: var(--shadow-lg);
  }
}

.toolbar-left,
.toolbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-toggle {
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.sidebar-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.sidebar-toggle svg {
  width: 20px;
  height: 20px;
}

.logo-icon {
  height: 24px;
  display: block;
}

.theme-toggle {
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  position: relative;
}

.theme-toggle:hover {
  background: var(--bg-hover);
  color: var(--accent);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  position: absolute;
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

.sun-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.8);
}

.moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .moon-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.8);
}

.github-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--text-secondary);
  transition: var(--transition);
  border-radius: 4px;
}

.github-link:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.github-link svg {
  width: 18px;
  height: 18px;
}

/* ========== 主容器 ========== */
.main-container {
  display: flex;
  flex: 1;
  position: relative;
  margin-left: 300px;
  padding-bottom: calc(
    48px + 20px + 20px
  ); /* Toolbar height + bottom offset + spacing */
  transition: margin-left 0.3s ease;
}

body.sidebar-collapsed .main-container {
  margin-left: 0;
}

/* ========== 侧边栏 ========== */
.sidebar {
  width: 280px;
  position: fixed;
  top: 20px;
  left: 20px;
  bottom: 20px;
  border-radius: 12px;
  background: rgba(var(--bg-sidebar-rgb), 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(var(--border-color-rgb), 0.3);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition:
    transform 0.3s ease,
    width 0.3s ease,
    background 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
  overflow: hidden;
}

.sidebar.collapsed {
  transform: translateX(-100%);
  width: 0;
  visibility: hidden;
}

.sidebar-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.search-container {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
}

.search-input {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
  background: var(--bg-primary);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.file-tree {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px 0;
}

/* 自定义滚动条 */
.file-tree::-webkit-scrollbar {
  width: 10px;
}

.file-tree::-webkit-scrollbar-track {
  background: transparent;
}

.file-tree::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
  border: 2px solid var(--bg-sidebar);
}

.file-tree::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* 树形节点 */
.tree-item {
  user-select: none;
}

.tree-node {
  display: flex;
  align-items: center;
  padding: 4px 8px 4px 8px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  transition: var(--transition);
  position: relative;
}

.tree-node:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.tree-node.active {
  background: var(--bg-active);
  color: var(--accent);
  font-weight: 500;
}

.tree-node.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
}

.tree-indent {
  width: 20px;
  flex-shrink: 0;
}

.tree-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-right: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.tree-icon svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.tree-icon.expanded svg {
  transform: rotate(90deg);
}

.tree-label {
  flex: 1;
  font-size: 1rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-children {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.tree-children.expanded {
  max-height: 5000px;
}

/* ========== 内容区域 ========== */
.content-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg-primary);
}

/* 内容区域滚动条 */
.content-area::-webkit-scrollbar {
  width: 12px;
}

.content-area::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

.content-area::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 6px;
  border: 3px solid var(--bg-primary);
}

.content-area::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ========== 右侧目录 TOC ========== */
.toc-sidebar {
  position: fixed;
  right: 20px;
  top: calc(80px + env(safe-area-inset-top));
  max-height: calc(100vh - 120px);

  /* 半透明 + 模糊背景 */
  background: rgba(var(--bg-sidebar-rgb), 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  border: 1px solid rgba(var(--border-color-rgb), 0.3);
  border-radius: 12px;

  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  z-index: 50;

  transition:
    opacity 0.8s ease,
    transform 0.8s ease,
    right 0.8s ease;
}

.toc-sidebar.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px);
}

.toc-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 8px 8px 0 0;
}

.toc-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.toc-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 16px;
  cursor: pointer;
  padding: 4px;
  color: var(--text-secondary);
}

.toc-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
  font-weight: bold;
}

.toc-content::-webkit-scrollbar {
  width: 4px;
}

.toc-content::-webkit-scrollbar-track {
  background: transparent;
}

.toc-content::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

.toc-content::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

.toc-link {
  display: block;
  padding: 6px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
  transition: var(--transition);
  border-left: 2px solid transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 400;
}

.toc-link:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.toc-link.toc-h1 {
  padding-left: 16px;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  border-left-color: var(--border-hover);
}

.toc-link.toc-h2 {
  padding-left: 32px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.toc-link.toc-h3 {
  padding-left: 48px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.toc-link.toc-h4 {
  padding-left: 64px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.toc-link.toc-h5,
.toc-link.toc-h6 {
  padding-left: 80px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.toc-sidebar .toc-content .toc-link.active {
  color: var(--accent) !important;
  border-left-color: var(--accent) !important;
  background: var(--bg-active) !important;
  font-weight: 700 !important;
  /* 动画效果保持 */
  transition: all 0.2s ease !important;
}
.toc-toggle-btn {
  height: 32px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  font-size: 14px;
  transition: var(--transition);
}

.toc-toggle-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* 移动端：TOC 可通过按钮访问 */
@media (max-width: 768px) {
  .toc-sidebar {
    right: -500px;
  }

  .toc-sidebar.show {
    right: 20px;
  }
}

.logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: 40px 20px;
}

.welcome-content {
  text-align: center;
  max-width: 500px;
  animation: fadeInUp 0.6s ease;
}

.welcome-icon {
  font-size: 80px;
  margin-bottom: 24px;
  animation: float 3s ease-in-out infinite;
}

.site-title {
  font-family: code;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.welcome-content h2 {
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.welcome-content p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.welcome-stats {
  display: flex;
  gap: 32px;
  justify-content: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}

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

/* ========== 文章容器 ========== */
.article-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 120px 20px;
  animation: fadeInUp 0.4s ease;
}

.article-container.hidden {
  display: none;
}

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

/* 面包屑导航 */
.breadcrumb {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-separator {
  color: var(--text-muted);
}

/* 文章头部 */
.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.article-title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.meta-item svg {
  width: 16px;
  height: 16px;
}

/* ========== Markdown 内容样式 ========== */
.markdown-content {
  font-size: 20px;
  line-height: 1.8;
  color: var(--text-primary);
}

.markdown-content > * {
  margin-bottom: 1.25em;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
  font-family: "hm", sans-serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  scroll-margin-top: 70px;
}

.markdown-content h1 {
  font-size: 2.5rem;
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.5rem;
}

.markdown-content h2 {
  font-size: 2rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.markdown-content h3 {
  font-size: 1.5rem;
}

.markdown-content h4 {
  font-size: 1.25rem;
}

.markdown-content h5 {
  font-size: 1.1em;
}

.markdown-content h6 {
  font-size: 1em;
  color: var(--text-secondary);
}

.markdown-content p {
  margin-bottom: 1em;
  line-height: 1.5em;
}

.markdown-content br {
  content: "";
  display: block;
  margin-bottom: 1em;
}

.markdown-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: all 0.3s;
}

.markdown-content a:hover {
  color: var(--accent-hover);
  text-decoration-thickness: 3px;
}

.markdown-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.markdown-content em {
  font-style: italic;
}

.markdown-content code {
  font-family: "code", "hm", "Consolas", "Monaco", monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  color: var(--accent);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

.markdown-content :not(pre) > code {
  font-family: "code", "hm", Consolas, Monaco, monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 0.15em 0.4em;
  border-radius: 6px;
  border: 1px solid var(--border-color);

  white-space: normal;
  word-break: break-word;
}

/* 代码块容器样式 */
.markdown-content pre {
  position: relative;
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 8px;
  padding: 0.5em 0.5em;
  margin: 1.6rem 0;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

/* 代码语言标签 */
.code-lang-label {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: 1px solid var(--border-color);
  z-index: 1;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.markdown-content pre:hover .code-lang-label {
  opacity: 1;
}

/* 代码主体 */
.markdown-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
  font-size: 1em;
  line-height: 1.2;
  display: block;
  white-space: pre;
}

.markdown-content pre code.hljs {
  background: transparent;
}
.markdown-content pre .copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0;
  transition: var(--transition);
}

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

.markdown-content pre .copy-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.markdown-content blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1.5rem;
  padding: 1.5rem;
  margin: 2rem 0;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border-radius: 6px;
}

.markdown-content ul,
.markdown-content ol {
  padding-left: 2rem;
  margin: 1.5rem 0;
}

.markdown-content li {
  margin: 0.5rem 0;
}

.markdown-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 2rem 0;
  cursor: zoom-in;
  transition: var(--transition);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.markdown-content img:hover {
  box-shadow: var(--shadow-md);
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  overflow-x: auto;
  display: block;
}

.markdown-content table thead {
  background: var(--bg-secondary);
}

.markdown-content table th,
.markdown-content table td {
  padding: 0.75rem;
  text-align: left;
  border: 1px solid var(--border-color);
}

.markdown-content table th {
  font-weight: 700;
  font-family: "hm", sans-serif;
  color: var(--text-primary);
}

.markdown-content hr {
  border: none;
  border-top: 2px solid var(--border-color);
  margin: 3rem 0;
}

.markdown-content mark {
  background: #b9dbff;
  color: var(--text-primary);
  padding: 0.1em 0.3em;
  border-radius: 0.2em;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .markdown-content mark {
  background: #3e4851;
  color: var(--text-primary);
}

/* ========== 文章底部导航 ========== */
.article-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.article-navigation {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.nav-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.nav-btn svg {
  width: 16px;
  height: 16px;
}

.prev-btn {
  margin-right: auto;
}

.next-btn {
  margin-left: auto;
}

/* ========== 图片缩放覆盖层 ========== */
.image-zoom-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0);
  backdrop-filter: blur(0);
  opacity: 0;
  z-index: 9999;
  pointer-events: none;
  transition:
    background 260ms,
    opacity 260ms,
    backdrop-filter 260ms;
}

.image-zoom-overlay.show {
  background: rgba(0, 0, 0, 0);
  backdrop-filter: blur(8px);
  opacity: 1;
  pointer-events: auto;
}

.image-zoom-img {
  max-width: 90vw;
  max-height: 90vh;
  transform-origin: center;
  will-change: transform;
  transition:
    transform 360ms,
    opacity 260ms;
  opacity: 0;
  cursor: zoom-out;
  user-select: none;
  border-radius: 8px;
}

.image-zoom-img.dragging {
  transition: none;
  cursor: grabbing;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
  .toolbar {
    left: 20px;
    right: 20px;
    bottom: 20px;
    width: calc(100% - 40px); /* Full width minus 20px on each side */
    transform: none;
    z-index: 999; /* Below sidebar */
    border: 1px solid rgba(var(--border-color-rgb), 0.3); /* Add consistent border */
    border-radius: 12px; /* Ensure rounded corners */
    box-shadow: var(--shadow-md); /* Consistent shadow */
    background: rgba(var(--bg-secondary-rgb), 0.7); /* Frosted glass */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .toolbar.hidden {
    transform: translateY(
      calc(100% + 20px)
    ); /* Move out of view including the bottom offset */
  }

  /* Adjust sidebar for mobile */
  .sidebar {
    top: 20px;
    left: 20px;
    bottom: 20px;
    width: calc(75% - 40px); /* Full width minus 20px on each side */
    z-index: 1000; /* Ensure it stays on top */
    box-shadow: var(--shadow-lg);
    transition:
      transform 0.3s ease,
      width 0.3s ease,
      background 0.3s ease,
      border-color 0.3s ease,
      box-shadow 0.3s ease;
  }

  .sidebar.collapsed {
    transform: translateX(
      calc(-100% - 20px)
    ); /* Move out of view including the left offset */
  }

  .main-container {
    margin-left: 0;
  }

  .article-container {
    padding: 0px 16px 80px;
  }

  .article-title {
    font-size: 28px;
  }

  .markdown-content {
    font-size: 15px;
  }

  .markdown-content h1 {
    font-size: 2rem;
  }

  .markdown-content h2 {
    font-size: 1.5rem;
  }

  .markdown-content h3 {
    font-size: 1.25rem;
  }

  .welcome-content h2 {
    font-size: 24px;
  }

  .welcome-icon {
    font-size: 60px;
  }

  .stat-value {
    font-size: 28px;
  }

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

  .nav-btn {
    width: 100%;
    justify-content: center;
  }

  .desktop-only {
    display: none;
  }

  .mobile-only {
    display: block;
  }

  .breadcrumb {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .article-meta {
    font-size: 12px;
  }

  .welcome-stats {
    gap: 20px;
  }
}