:root {
  --bg-primary: #1a1d23;
  --bg-secondary: #21252b;
  --bg-tertiary: #282c34;
  --bg-elevated: #2d323a;
  --sidebar-bg: #16191f;
  --border: #2e3440;
  --text-primary: #e4e6eb;
  --text-secondary: #b9bbbe;
  --text-tertiary: #8b8d94;
  --accent-green: #1bd96a;
  --accent-green-hover: #17c05e;
  --accent-green-glow: rgba(27, 217, 106, 0.15);
  --code-bg: #1e2228;
  --code-border: #2e3440;
  --hover-bg: #2a2f37;
  --active-bg: rgba(27, 217, 106, 0.1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f1f3f5;
  --bg-elevated: #ffffff;
  --sidebar-bg: #f8f9fa;
  --border: #e1e4e8;
  --text-primary: #1a1d23;
  --text-secondary: #57606a;
  --text-tertiary: #6e7781;
  --accent-green: #1a9f5d;
  --accent-green-hover: #168d52;
  --accent-green-glow: rgba(26, 159, 93, 0.1);
  --code-bg: #f6f8fa;
  --code-border: #d0d7de;
  --hover-bg: #f3f4f6;
  --active-bg: rgba(26, 159, 93, 0.08);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
  line-height: 1.6;
}

.sidebar {
  width: 280px;
  min-width: 280px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sidebar-header .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 16px;
  transition: opacity 0.2s;
}

.sidebar-header .brand:hover {
  opacity: 0.8;
}

.sidebar-header .brand img {
  width: 28px;
  height: 28px;
}

.badges-container {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.badges-container a {
  display: inline-block;
  transition: opacity 0.2s, transform 0.2s;
}

.badges-container a:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

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

.badge-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.badge-row a,
.badge-row img {
  flex-shrink: 0;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  color: var(--text-secondary);
  transition: all 0.2s;
}

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

.sidebar-nav {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
}

.sidebar-nav .section {
  margin-bottom: 24px;
}

.sidebar-nav .section-title {
  padding: 10px 20px 8px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-green);
  background: var(--bg-tertiary);
  border-left: 3px solid var(--accent-green);
}

.sidebar-nav a {
  display: block;
  padding: 10px 20px 10px 23px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  border-left: 3px solid transparent;
  transition: all 0.15s;
  line-height: 1.5;
  font-weight: 500;
}

.sidebar-nav a:hover {
  color: var(--text-primary);
  background: var(--hover-bg);
  border-left-color: var(--accent-green);
}

.sidebar-nav a.active {
  color: var(--accent-green);
  background: var(--active-bg);
  border-left-color: var(--accent-green);
  font-weight: 600;
}

.main {
  flex: 1;
  max-width: 900px;
  padding: 48px 56px 80px;
  min-width: 0;
  background: var(--bg-primary);
}

.toc-sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--sidebar-bg);
  border-left: 1px solid var(--border);
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  padding: 24px 0;
}

.toc-header {
  padding: 8px 20px 12px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.toc-nav {
  padding: 0 12px;
}

.toc-nav .toc-empty {
  padding: 8px;
  color: var(--text-tertiary);
  font-size: 13px;
  font-style: italic;
}

.toc-nav a {
  display: block;
  padding: 6px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
  line-height: 1.4;
  margin-bottom: 2px;
}

.toc-nav a:hover {
  color: var(--text-primary);
  border-left-color: var(--accent-green);
  background: var(--hover-bg);
}

.toc-nav a.active {
  color: var(--accent-green);
  border-left-color: var(--accent-green);
  background: var(--active-bg);
  font-weight: 600;
}

.toc-nav a.toc-h2 {
  padding-left: 12px;
  font-weight: 500;
}

.toc-nav a.toc-h3 {
  padding-left: 24px;
  font-size: 12px;
  font-weight: 400;
}

.toc-nav a.toc-h4 {
  padding-left: 36px;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-tertiary);
}

.main h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border);
  padding-bottom: 16px;
  margin-bottom: 32px;
  position: relative;
}

.main h1::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--accent-green);
}

.main h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.main h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 16px;
}

.main h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 12px;
}

.main p {
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

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

.main a {
  color: var(--accent-green);
  text-decoration: none;
  transition: color 0.2s;
}

.main a:hover {
  color: var(--accent-green-hover);
  text-decoration: underline;
}

.main ul,
.main ol {
  padding-left: 1.75em;
  margin-bottom: 16px;
}

.main li {
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.main li strong {
  color: var(--text-primary);
}

.main hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.main blockquote {
  border-left: 3px solid var(--accent-green);
  background: var(--bg-secondary);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin: 24px 0;
  color: var(--text-secondary);
}

.main blockquote p {
  margin-bottom: 0;
}

.main blockquote strong {
  color: var(--accent-green);
}

.main table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 24px;
  font-size: 14px;
  background: var(--bg-secondary);
}

.main table thead th {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.main table td {
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  color: var(--text-secondary);
}

.main table td code {
  font-size: 12px;
}

.main table tr:last-child td {
  border-bottom: none;
}

.main table tbody tr {
  transition: background 0.15s;
}

.main table tbody tr:hover {
  background: var(--hover-bg);
}

.main code {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  color: var(--accent-green);
  padding: 0.2em 0.5em;
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 0.9em;
  font-weight: 500;
}

.main pre {
  background: var(--code-bg) !important;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px !important;
  margin-bottom: 24px;
  overflow-x: auto;
  line-height: 1.6;
  font-size: 14px;
  box-shadow: var(--shadow-sm);
}

.main pre code {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  font-size: inherit;
  color: var(--text-primary);
}

.main img {
  max-width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.loading,
.error {
  padding: 60px 40px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 15px;
}

.error {
  color: #f85149;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 5px;
}

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

.hamburger {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  padding: 6px 10px;
  transition: all 0.2s;
}

.hamburger:hover {
  background: var(--hover-bg);
  border-color: var(--accent-green);
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    z-index: 1000;
    left: -280px;
    transition: left 0.3s ease;
    box-shadow: var(--shadow-md);
  }

  .sidebar.open {
    left: 0;
  }

  .toc-sidebar {
    display: none;
  }

  .main {
    padding: 24px 20px 60px;
    max-width: 100%;
  }

  .hamburger {
    display: block;
  }

  .top-mobile {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
  }
}

@media (min-width: 769px) {
  .top-mobile {
    display: none;
  }
}

@media (max-width: 1200px) {
  .toc-sidebar {
    display: none;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.main #pageContent {
  animation: fadeIn 0.3s ease;
}

.main h2:hover,
.main h3:hover {
  color: var(--accent-green);
  transition: color 0.2s;
}

.main table code {
  background: var(--accent-green-glow);
  border-color: var(--accent-green);
  color: var(--accent-green);
}