:root {
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #141414;
  --color-bg-tertiary: #1a1a1a;
  --color-bg-hover: #2a2a2a;
  --color-bg-active: #559859;
  --color-text-primary: #f0f6fc;
  --color-text-secondary: #8b949e;
  --color-text-link: #559859;
  --color-border: #2a2a2a;
  --color-accent: #559859;
  --sidebar-width: 280px;
  --toc-width: 250px;
  --header-height: 64px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.content-container {
  display: flex;
  padding-top: var(--header-height);
  min-height: 100vh;
}

.top-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  backdrop-filter: blur(10px);
  background: rgba(20, 20, 20, 0.95);
}

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

.site-header {
  display: flex;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-xl) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-md);
}

.logo {
  height: 40px;
  width: 40px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: var(--spacing-md);
}

.header-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 14px;
  min-width: 200px;
}

.search-trigger:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent);
}

.search-icon {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

.search-shortcut {
  margin-left: auto;
  padding: 2px 6px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
}

li {
  margin-bottom: 10px;  /* Adjust this value as needed */
}

.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  padding-bottom: var(--spacing-xl);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
  /* Smooth scroll behavior */
  scroll-behavior: smooth;
}

/* Prevent flash during scroll restoration */
.sidebar.scroll-restoring {
  overflow: hidden;
}

/* Prevent layout shift during page load */
.sidebar.loading {
  visibility: hidden;
}

.sidebar.loading .sidebar-group-header,
.sidebar.loading .sidebar-sublinks {
  transition: none !important;
}

.sidebar::-webkit-scrollbar {
  width: 8px;
}

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

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

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

.sidebar section {
  margin-bottom: var(--spacing-lg);
}

.sidebar h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-lg);
  margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.sidebar a {
  color: var(--color-text-primary);
  text-decoration: none;
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  margin: 0 var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
  font-size: 14px;
  position: relative;
}

.sidebar a:hover:not(.active) {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.sidebar a.active {
  background: var(--color-bg-active);
  color: white;
  font-weight: 500;
}

.sidebar a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: white;
  border-radius: 0 3px 3px 0;
}

/* Collapsible sidebar groups */
.sidebar-group {
  margin-bottom: var(--spacing-sm);
}

.sidebar-group-header {
  color: var(--color-text-primary);
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  margin: 0 var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
  font-size: 14px;
  cursor: pointer;
  position: relative;
  user-select: none;
}

.sidebar-group-header:hover {
  background: var(--color-bg-hover);
}

.sidebar-group-header::after {
  content: '▸';
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  transition: transform 0.2s ease;
  font-size: 12px;
}

.sidebar-group-header.expanded::after {
  transform: translateY(-50%) rotate(90deg);
}

.sidebar-sublinks {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  margin-left: var(--spacing-md);
}

.sidebar-sublinks.expanded {
  max-height: 500px;
  overflow: visible;
}

/* Prevent transitions on page load to eliminate jumping */
.sidebar-no-transitions .sidebar-sublinks {
  transition: none !important;
}

.sidebar-no-transitions .sidebar-group-header::after {
  transition: none !important;
}

.sidebar-sublinks a {
  font-size: 13px;
  padding: 6px var(--spacing-lg);
  margin: 0 var(--spacing-sm);
  color: var(--color-text-secondary);
}

.sidebar-sublinks a:hover:not(.active) {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.sidebar-sublinks a.active {
  background: var(--color-bg-active);
  color: white;
}

.main-content {
  max-width: 900px;
  padding: var(--spacing-xl);
  margin-left: calc(var(--sidebar-width) + (100vw - var(--sidebar-width) - var(--toc-width) - 900px) / 2);
  margin-right: auto;
  margin-bottom: 100px;
}

.main-content > *:first-child {
  margin-top: 0;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  font-size: 14px;
  color: var(--color-text-secondary);
}

.breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--color-text-link);
}

.breadcrumbs .separator {
  opacity: 0.5;
}

.page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.page-nav-prev {
  grid-column: 1;
  justify-self: start;
}

.page-nav-next {
  grid-column: 2;
  justify-self: end;
}

.page-nav a {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.2s ease;
  max-width: 45%;
}

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

.page-nav .label {
  font-size: 12px;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.page-nav .title {
  color: var(--color-text-primary);
  font-weight: 500;
}

.toc {
  position: fixed;
  top: calc(var(--header-height) + var(--spacing-xl));
  right: var(--spacing-lg);
  width: var(--toc-width);
  max-height: calc(100vh - var(--header-height) - var(--spacing-xxl));
  overflow-y: auto;
  padding-left: var(--spacing-lg);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.toc::-webkit-scrollbar {
  width: 6px;
}

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

.toc::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.toc-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc li {
  margin-bottom: var(--spacing-sm);
}

.toc a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.6;
  display: block;
  padding: var(--spacing-xs) 0;
  transition: color 0.2s ease;
  border-left: 2px solid transparent;
  padding-left: var(--spacing-sm);
}

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

.toc a.active {
  color: var(--color-text-link);
  border-left-color: var(--color-accent);
}

.toc ul ul {
  padding-left: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.toc ul ul li {
  font-size: 13px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-weight: 600;
  line-height: 1.3;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-md);
}

h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-xxl);
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1rem;
}

p {
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: var(--spacing-lg) auto;
  border-radius: var(--radius-lg);
}

/* Constrain images in main content to 5:4 aspect ratio maximum */
.main-content img {
  max-width: 100%;
  max-height: calc(min(900px, 100vw - 2 * var(--spacing-xl)) * 0.8);
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  margin: var(--spacing-lg) auto;
  border-radius: var(--radius-lg);
}

img:hover {
  cursor: zoom-in;
}

/* Sample button */
.page-header-with-sample {
  position: relative;
}

.sample-button {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--color-accent);
  color: white !important;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  text-decoration: none !important;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s ease;
  z-index: 10;
}

.sample-button:hover {
  background: #4a7a4d;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(85, 152, 89, 0.3);
}

/* Lists */
ul, ol {
  padding-left: var(--spacing-xl);
  margin: var(--spacing-md) 0;
  line-height: 1.8;
}

li {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

li > ul,
li > ol {
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

/* Blockquotes and Callouts */
blockquote {
  background: var(--color-bg-secondary);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

blockquote p {
  margin: 0;
  color: var(--color-text-primary);
}

blockquote p:not(:last-child) {
  margin-bottom: var(--spacing-sm);
}

.callout {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) 0;
  border: 1px solid;
}

.callout-info {
  background: rgba(85, 152, 89, 0.1);
  border-color: var(--color-accent);
}

.callout-warning {
  background: rgba(251, 191, 36, 0.1);
  border-color: #fbbf24;
}

.callout-success {
  background: rgba(34, 197, 94, 0.1);
  border-color: #22c55e;
}

.callout-danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
}

/* Code blocks */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.2em 0.4em;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: #79c0ff;
}

pre {
  position: relative;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

pre::-webkit-scrollbar {
  height: 8px;
}

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

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

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-primary);
}

.code-copy-button {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  opacity: 0;
}

pre:hover .code-copy-button {
  opacity: 1;
}

.code-copy-button:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.code-copy-button.copied {
  color: #22c55e;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

th, td {
  text-align: left;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 14px;
}

td {
  color: var(--color-text-primary);
  font-size: 14px;
}

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

tr:hover td {
  background: var(--color-bg-tertiary);
}

/* Links */
a {
  color: var(--color-text-link);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  text-decoration: underline;
}

.main-content a:not(.page-nav a) {
  color: var(--color-text-link);
  text-decoration: underline;
  text-decoration-color: rgba(88, 166, 255, 0.3);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s ease;
}

.main-content a:not(.page-nav a):hover {
  text-decoration-color: var(--color-text-link);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 24px;
  cursor: pointer;
  padding: var(--spacing-sm);
}

/* Responsive Design */
@media screen and (max-width: 1200px) {
  .toc {
    display: none;
  }
  
  .main-content {
    padding-right: var(--spacing-xl);
  }
}

@media screen and (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .sidebar {
    position: fixed;
    left: -100%;
    width: 280px;
    transition: left 0.3s ease;
    z-index: 999;
  }
  
  .sidebar.active {
    left: 0;
  }
  
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
  }
  
  .sidebar-overlay.active {
    display: block;
  }
  
  .main-content {
    margin-left: auto;
    margin-right: auto;
    padding: var(--spacing-md);
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    max-width: 100%;
  }
  
  .toc {
    display: none;
  }
  
  .search-trigger {
    min-width: auto;
    padding: var(--spacing-sm);
  }
  
  .search-trigger .search-text,
  .search-trigger .search-shortcut {
    display: none;
  }
  
  .top-header {
    padding: 0 var(--spacing-md);
  }
}