/*
 * Aliki Theme Stylesheet
 * Modern RDoc theme by Stan Lo
 *
 * Features:
 * - Three-column responsive layout (navigation, content, table of contents)
 * - Dark mode support with localStorage persistence
 * - Auto-generated right sidebar TOC with scroll spy
 * - Mobile-optimized search modal
 * - Enhanced syntax highlighting for both light and dark themes
 * - Code-copying functionality
 */

/* 1. Design System - CSS Variables and Tokens */

/* Light Theme (Default) */
:root {
  /* Color Palette - Primary */
  --color-primary-50: #fdeae9;
  --color-primary-100: #fadad3;
  --color-primary-200: #f8bfbd;
  --color-primary-300: #f5a9a7;
  --color-primary-400: #f07f7b;
  --color-primary-500: #eb544f;
  --color-primary-600: #e62923;
  --color-primary-700: #b8211c;
  --color-primary-800: #8a1915;
  --color-primary-900: #5c100e;

  /* Color Palette - Neutral */
  --color-neutral-50: #fafaf9;
  --color-neutral-100: #f5f5f4;
  --color-neutral-200: #e7e5e4;
  --color-neutral-300: #d6d3d1;
  --color-neutral-400: #a8a29e;
  --color-neutral-500: #78716c;
  --color-neutral-600: #57534e;
  --color-neutral-700: #44403c;
  --color-neutral-800: #292524;
  --color-neutral-900: #1c1917;

  /* Code highlighting colors */
  --code-blue: #1d4ed8;
  --code-green: #047857;
  --code-orange: #d97706;
  --code-purple: #7e22ce;
  --code-red: #dc2626;

  /* C syntax highlighting */
  --c-keyword: #b91c1c;
  --c-type: #0891b2;
  --c-macro: #ea580c;
  --c-function: #7c3aed;
  --c-identifier: #475569;
  --c-operator: #059669;
  --c-preprocessor: #a21caf;
  --c-value: #92400e;
  --c-string: #15803d;
  --c-comment: #78716c;

  /* Color Palette - Green (for success states) */
  --color-green-400: #4ade80;
  --color-green-500: #22c55e;
  --color-green-600: #16a34a;

  /* Semantic Colors - Light Theme */
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-600);
  --color-text-tertiary: var(--color-neutral-500);
  --color-background-primary: #fff;
  --color-background-secondary: var(--color-neutral-50);
  --color-background-tertiary: var(--color-neutral-100);
  --color-border-default: var(--color-neutral-300);
  --color-border-subtle: var(--color-neutral-200);
  --color-border-emphasis: var(--color-neutral-400);
  --color-link-default: var(--color-text-primary);
  --color-link-hover: var(--color-primary-600);
  --color-accent-primary: var(--color-primary-600);
  --color-accent-hover: var(--color-primary-700);
  --color-accent-subtle: var(--color-primary-50);
  --color-code-bg: #f6f8fa;
  --color-code-border: var(--color-neutral-300);
  --color-nav-bg: #fff;
  --color-nav-text: var(--color-neutral-700);
  --color-th-background: var(--color-neutral-100);
  --color-td-background: var(--color-neutral-50);

  /* RGBA Colors (theme-agnostic) */
  --color-overlay: rgb(0 0 0 / 50%);
  --color-emphasis-bg: rgb(255 111 97 / 10%);
  --color-emphasis-decoration: rgb(52 48 64 / 25%);
  --color-search-highlight-bg: rgb(224 108 117 / 10%);
  --color-success-bg: rgb(34 197 94 / 10%);

  /* Typography Scale */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */

  /* Font Families */
  --font-family-base: -apple-system, blinkmacsystemfont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Helvetica Neue', sans-serif;
  --font-family-heading: var(--font-family-base);
  --font-family-mono: ui-monospace, 'SFMono-Regular', 'SF Mono', 'Menlo', 'Consolas', 'Liberation Mono', monospace;

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Font Shortcuts */
  --font-primary: var(--font-family-base);
  --font-heading: var(--font-family-heading);
  --font-code: var(--font-family-mono);

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Spacing Scale */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */

  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.375rem;  /* 6px */
  --radius-lg: 0.5rem;    /* 8px */

  /* Shadows */
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 10%), 0 1px 2px -1px rgb(0 0 0 / 10%);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 10%), 0 4px 6px -4px rgb(0 0 0 / 10%);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 10%), 0 8px 10px -6px rgb(0 0 0 / 10%);

  /* Layout Dimensions */
  --layout-sidebar-width: 300px;
  --layout-sidebar-width-min: 300px;
  --layout-sidebar-width-max: 15%;
  --layout-toc-width-min: 240px;
  --layout-toc-width-max: 18%;
  --layout-content-max-width: 800px;
  --layout-header-height: 64px;
  --layout-search-width: 400px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;

  /* Z-Index Scale */
  --z-fixed: 300;
  --z-modal: 400;
  --z-popover: 500;

}

/* Dark Theme */
[data-theme="dark"] {
  /* Code highlighting colors */
  --code-blue: #93c5fd;
  --code-green: #34d399;
  --code-orange: #fbbf24;
  --code-purple: #c084fc;
  --code-red: #f87171;

  /* C syntax highlighting */
  --c-keyword: #f87171;
  --c-type: #22d3ee;
  --c-macro: #fb923c;
  --c-function: #a78bfa;
  --c-identifier: #94a3b8;
  --c-operator: #6ee7b7;
  --c-preprocessor: #e879f9;
  --c-value: #fcd34d;
  --c-string: #4ade80;
  --c-comment: #a8a29e;

  /* Semantic Colors - Dark Theme */
  --color-text-primary: var(--color-neutral-50);
  --color-text-secondary: var(--color-neutral-200);
  --color-text-tertiary: var(--color-neutral-400);
  --color-background-primary: var(--color-neutral-900);
  --color-background-secondary: var(--color-neutral-800);
  --color-background-tertiary: var(--color-neutral-700);
  --color-border-default: var(--color-neutral-600);
  --color-border-subtle: var(--color-neutral-700);
  --color-border-emphasis: var(--color-neutral-300);
  --color-link-default: var(--color-neutral-50);
  --color-link-hover: var(--color-primary-500);
  --color-accent-primary: var(--color-primary-500);
  --color-accent-hover: var(--color-primary-400);
  --color-accent-subtle: rgb(235 84 79 / 10%);
  --color-code-bg: var(--color-neutral-800);
  --color-code-border: var(--color-neutral-700);
  --color-nav-bg: var(--color-neutral-900);
  --color-nav-text: var(--color-neutral-50);
  --color-th-background: var(--color-background-tertiary);
  --color-td-background: var(--color-background-secondary);

  /* Dark theme shadows (slightly more subtle) */
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 40%), 0 1px 2px -1px rgb(0 0 0 / 40%);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 40%), 0 4px 6px -4px rgb(0 0 0 / 40%);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 40%), 0 8px 10px -6px rgb(0 0 0 / 40%);

}

/* 2. Global Styles & Layout */
body {
  background: var(--color-background-primary);
  font-family: var(--font-primary);
  font-weight: 400;
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
  margin: 0;
  overflow-wrap: break-word; /* Avoid overflow on mobile */

  /* Grid layout with header, sidebar, main, and footer */
  display: grid;
  grid-template: "header header" var(--layout-header-height) "nav main" 1fr "nav footer" auto / var(--layout-sidebar-width) 1fr;
  min-height: 100vh;
}

/* Three-column layout when TOC is present */
body.has-toc {
  grid-template: "header header header" var(--layout-header-height) "nav main toc" 1fr "nav footer toc" auto / var(--layout-sidebar-width) 1fr minmax(var(--layout-toc-width-min), var(--layout-toc-width-max));
  min-height: 100vh;
}

/* Mobile: stack everything vertically */
@media (width <= 1023px) {
  body,
  body.has-toc {
    display: flex;
    flex-direction: column;
    grid-template: none;
  }
}

/* 3. Typography */

/* 4. Links */
a {
  color: var(--color-link-default);
  transition: color var(--transition-base);
  text-decoration: underline;
  text-underline-offset: 0.2em; /* Make sure it doesn't overlap with underscores in a method name. */
}

/* 5. Code and Pre */

/* Code blocks */
pre {
  font-family: var(--font-code);
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  margin: var(--space-4) 0;
  position: relative;
}

/* Code block wrapper for copy button */
.code-block-wrapper {
  position: relative;
  margin: var(--space-4) 0;
}

/* Copy button styling */
.copy-code-button {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: var(--space-2);
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  z-index: 10;
}

.copy-code-button:hover,
.copy-code-button:focus {
  opacity: 1;
  background: var(--color-background-tertiary);
  border-color: var(--color-border-emphasis);
}

.copy-code-button:active {
  transform: scale(0.95);
}

.copy-code-button svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

/* Copied state - subtle green checkmark */
.copy-code-button.copied {
  background: var(--color-success-bg);
  border-color: var(--color-green-500);
  opacity: 1;
}

.copy-code-button.copied svg {
  color: var(--color-green-600);
}

[data-theme="dark"] .copy-code-button.copied {
  border-color: var(--color-green-400);
}

[data-theme="dark"] .copy-code-button.copied svg {
  color: var(--color-green-400);
}

/* Mobile adjustments */
@media (hover: none) {
  .copy-code-button {
    opacity: 0.7;
  }

  .copy-code-button:active {
    opacity: 1;
  }
}

/* Inline code */
code {
  font-family: var(--font-code);
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border-subtle);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

a code:hover {
  color: var(--color-link-hover);
}

/* Tables */
table {
  margin: 0;
  border-spacing: 0;
  border-collapse: collapse;
}

table tr th, table tr td {
  padding: 0.2em 0.4em;
  border: 1px solid var(--color-border-default);
}

table tr th {
  background-color: var(--color-th-background);
}

table tr:nth-child(even) td {
  background-color: var(--color-td-background);
}

/* 6. Header (Top Navbar) */
header.top-navbar {
  grid-area: header;
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  background: var(--color-background-primary);
  border-bottom: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 var(--space-6);
  gap: var(--space-8);
  height: var(--layout-header-height);
  box-shadow: var(--shadow-sm);
}

header.top-navbar .navbar-brand {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
  white-space: nowrap;
}

header.top-navbar .navbar-brand:hover {
  color: var(--color-accent-primary);
}

header.top-navbar .navbar-search {
  position: relative;
  flex: 0 1 auto;
  width: var(--layout-search-width);
}

header.top-navbar .navbar-search form {
  margin: 0;
  padding: 0;
}



/* Mobile search icon button (hidden on desktop) */
.navbar-search-mobile {
  display: none;
}

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  font-size: var(--font-size-lg);
  line-height: 1;
  width: 2.5rem;
  height: 2.5rem;
}

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

.theme-toggle:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.theme-toggle-icon {
  display: inline-block;
  transition: transform var(--transition-base);
}

.theme-toggle:hover .theme-toggle-icon {
  transform: rotate(20deg);
}

/* Mobile navbar */
@media (width <= 1023px) {
  header.top-navbar {
    display: flex;
    align-items: center;
    padding: 0 var(--space-4);
    gap: var(--space-4);
  }

  /* Hide desktop search bar on mobile */
  header.top-navbar .navbar-search-desktop {
    display: none;
  }

  /* Show mobile search icon */
  .navbar-search-mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    background: transparent;
    border: none;
    font-size: 1.25rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: color var(--transition-fast);
  }

  .navbar-search-mobile:hover {
    color: var(--color-accent-primary);
  }

  /* Brand needs left margin for hamburger button */
  header.top-navbar .navbar-brand {
    margin-left: 2.5rem;
    flex: 1;
    font-size: var(--font-size-lg);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

/* 7. Navigation (Left Sidebar) */
nav {
  grid-area: nav;
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  border-right: 1px solid var(--color-border-default);
  background: var(--color-nav-bg);
  color: var(--color-nav-text);
  overflow: hidden auto;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: var(--layout-header-height);
  height: calc(100vh - var(--layout-header-height));
}

/* Mobile navigation */
@media (width <= 1023px) {
  nav {
    position: fixed;
    top: var(--layout-header-height);
    bottom: 0;
    left: 0;
    width: var(--layout-sidebar-width);
    z-index: calc(var(--z-fixed) - 10); /* Below header */
    box-shadow: var(--shadow-lg);

    /* Don't set height - let top/bottom define it */
  }

  nav[hidden] {
    display: none;
  }

  /* Backdrop for mobile nav */
  body::before {
    content: '';
    position: fixed;
    inset: var(--layout-header-height) 0 0 0;
    background: var(--color-overlay);
    z-index: calc(var(--z-fixed) - 20);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
  }

  /* Show backdrop when nav is open */
  body.nav-open::before {
    opacity: 1;
    pointer-events: auto;
  }
}

/* Desktop: hide nav when [hidden] attribute is set */
@media (width >= 1024px) {
  nav[hidden] {
    display: none;
  }
}

nav .nav-section {
  margin-top: var(--space-6);
  padding: 0 var(--space-6);
}

nav h2, nav h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0 0 var(--space-4);
  padding: var(--space-2) 0;
  color: var(--color-accent-primary);
  border-bottom: 1px solid var(--color-border-default);
}

nav ul,
nav dl,
nav p {
  padding: 0;
  list-style: none;
  margin: var(--space-3) 0;
}

nav ul li {
  margin-bottom: var(--space-2);
  line-height: var(--line-height-relaxed);
}

nav ul ul {
  padding-left: var(--space-5);
  margin-top: var(--space-2);
}

nav ul ul ul {
  padding-left: var(--space-5);
}

nav ul ul ul ul {
  padding-left: var(--space-5);
}

nav a {
  text-decoration: none;
}

nav footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border-default);
}

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

#navigation-toggle {
  display: none; /* Hidden by default, shown on mobile */
}

/* Mobile toggle button */
@media (width <= 1023px) {
  #navigation-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: calc(var(--layout-header-height) / 2);
    transform: translateY(-50%);
    left: 1rem;
    z-index: var(--z-fixed);
    font-size: 1.5rem;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: color var(--transition-fast);
    line-height: 1;
    user-select: none;
    -webkit-user-select: none;
  }

  #navigation-toggle:hover {
    color: var(--color-accent-primary);
  }
}

/*
 * Shared Collapsible Animation using ::details-content pseudo-element.
 * This is the modern CSS approach for animating <details> elements.
 * Uses block-size animation with interpolate-size for smooth height transitions.
 * Both nav-section-collapsible and nested link-list details share this pattern.
 */
nav details {
  interpolate-size: allow-keywords;
}

nav details::details-content {
  overflow: hidden;
  block-size: 0;
  transition: block-size 200ms ease, content-visibility 200ms ease allow-discrete;
}

nav details[open]::details-content {
  block-size: auto;
}

/* Collapsible Navigation Section Headers */

nav .nav-section-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
  -webkit-user-select: none;
  border-bottom: 1px solid var(--color-border-default);
  margin-bottom: var(--space-3);
  transition: color var(--transition-fast);
}

nav .nav-section-header::-webkit-details-marker {
  display: none;
}

nav .nav-section-header:hover {
  color: var(--color-accent-primary);
}

nav .nav-section-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  color: var(--color-accent-primary);
}

nav .nav-section-icon svg {
  width: 100%;
  height: 100%;
}

nav .nav-section-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: inherit;
}

nav .nav-section-chevron {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  color: var(--color-text-tertiary);
  transition: transform var(--transition-base);
}

nav .nav-section-chevron svg {
  width: 100%;
  height: 100%;
}

/* Rotate chevron when open */
nav .nav-section-collapsible[open] > .nav-section-header .nav-section-chevron {
  transform: rotate(90deg);
}

nav .nav-section-collapsible > ul,
nav .nav-section-collapsible > dl,
nav .nav-section-collapsible > p {
  margin-top: 0;
}

nav .nav-section-collapsible > .nav-list {
  padding-left: var(--space-5);
  border-left: 1px solid var(--color-border-subtle);
  margin-left: 9px; /* Align with the section icon center */
}

nav .nav-section-collapsible .nav-list .link-list {
  border-left: none;
  margin-left: 0;
  padding-left: var(--space-5);
}

/*
  Improve chevron styling for details under link-list, using SVG chevron that matches nav-section-chevron
  We need to avoid adding the element in class content generation so it doesn't break darkfish styles
*/
nav li details:has(.link-list) > summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

nav li details:has(.link-list) > summary::after {
  content: '';
  position: static;
  display: inline-block;
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  margin-left: 0;
  background-color: var(--color-text-secondary);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='9 18 15 12 9 6'%3E%3C/polyline%3E%3C/svg%3E");
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='9 18 15 12 9 6'%3E%3C/polyline%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  transition: transform var(--transition-base), background-color var(--transition-fast);
}

nav li details:has(.link-list) > summary:hover::after {
  background-color: var(--color-accent-primary);
}

nav li details:has(.link-list)[open] > summary::after {
  transform: rotate(90deg);
  background-color: var(--color-accent-primary);
}

/* 8. Main Content (Center Column) */
main {
  grid-area: main;
  width: 100%;
  max-width: var(--layout-content-max-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-8);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  box-sizing: border-box;
}

/* Desktop: hide hamburger */
@media (width >= 1024px) {
  #navigation-toggle {
    display: none;
  }
}

/* Mobile: full width with padding */
@media (width <= 1023px) {
  main {
    padding: var(--space-6) var(--space-4);
    padding-top: var(--space-8);
    width: 100%;
  }

  footer.site-footer {
    padding: var(--space-8) var(--space-4);
  }

  footer.site-footer .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

main h1[class] {
  margin-top: 0;
  margin-bottom: 1em;
  font-size: 2.5em;
  color: var(--color-accent-primary);
}

main h1,
main h2,
main h3,
main h4,
main h5,
main h6 {
  font-family: var(--font-heading);
  color: var(--color-accent-primary);
  scroll-margin-top: calc(var(--layout-header-height) + 2rem);
}

/* Heading size hierarchy */
main h1 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

main h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

main h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-tight);
}

main h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

main h5, main h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-3);
  margin-bottom: var(--space-2);
}

/* Heading links */
main h1 a,
main h2 a,
main h3 a,
main h4 a,
main h5 a,
main h6 a {
  color: inherit;
  text-decoration: none;
}

main h1 a:hover,
main h2 a:hover,
main h3 a:hover,
main h4 a:hover,
main h5 a:hover,
main h6 a:hover {
  text-decoration: underline;
}

/* Syntax Highlighting - Light Theme */
.ruby-constant   { color: var(--code-orange); }
.ruby-keyword    { color: var(--code-red); }
.ruby-ivar       { color: var(--code-orange); }
.ruby-operator   { color: var(--code-green); }
.ruby-identifier { color: var(--code-blue); }
.ruby-node       { color: var(--code-purple); }

.ruby-comment {
  color: var(--color-neutral-500);
  font-style: italic;
}
.ruby-regexp     { color: var(--code-purple); }
.ruby-value      { color: var(--code-orange); }
.ruby-string     { color: var(--code-green); }

/* Syntax Highlighting - Dark Theme */
[data-theme="dark"] .ruby-constant   { color: var(--code-orange); }
[data-theme="dark"] .ruby-keyword    { color: var(--code-red); }
[data-theme="dark"] .ruby-ivar       { color: var(--code-orange); }
[data-theme="dark"] .ruby-operator   { color: var(--code-green); }
[data-theme="dark"] .ruby-identifier { color: var(--code-blue); }
[data-theme="dark"] .ruby-node       { color: var(--code-purple); }

[data-theme="dark"] .ruby-comment {
  color: var(--color-neutral-400);
  font-style: italic;
}
[data-theme="dark"] .ruby-regexp     { color: var(--code-purple); }
[data-theme="dark"] .ruby-value      { color: var(--code-orange); }
[data-theme="dark"] .ruby-string     { color: var(--code-green); }

/* C Syntax Highlighting */
.c-keyword { color: var(--c-keyword); }
.c-type { color: var(--c-type); }
.c-macro { color: var(--c-macro); }
.c-function { color: var(--c-function); }
.c-identifier { color: var(--c-identifier); }
.c-operator { color: var(--c-operator); }
.c-preprocessor { color: var(--c-preprocessor); }
.c-value { color: var(--c-value); }
.c-string { color: var(--c-string); }

.c-comment {
  color: var(--c-comment);
  font-style: italic;
}

/* Emphasis */
em {
  text-decoration-color: var(--color-emphasis-decoration);
  text-decoration-line: underline;
  text-decoration-style: dotted;
}

strong,
em {
  color: var(--color-accent-primary);
  background-color: var(--color-emphasis-bg);
}

/* Paragraphs */
main p {
  line-height: var(--line-height-relaxed);
  font-weight: 400;
  margin-bottom: var(--space-4);
}

/* Preformatted Text */
main pre {
  margin: 1.2em 0.5em;
  padding: 1em;
  font-size: 0.8em;
}

.code-block-wrapper pre {
  margin: 0;
}

/* Horizontal Rules */
main hr {
  margin: 1.5em 1em;
  border: 2px solid var(--color-border-default);
}

/* Blockquotes */
main blockquote {
  margin: 0 2em 1.2em 1.2em;
  padding-left: 0.5em;
  border-left: 2px solid var(--color-border-default);
}

/* Lists */
main li > p {
  margin: 0.5em;
}

/* Definition Lists */
main dl {
  margin: 1em 0.5em;
}

main dt {
  line-height: 1.5;
  font-weight: bold;
}

main dl.note-list dt {
  margin-right: 1em;
  float: left;
}

main dl.note-list dt:has(+ dt) {
  margin-right: 0.25em;
}

main dl.note-list dt:has(+ dt)::after {
  content: ', ';
  font-weight: normal;
}

main dd {
  margin: 0 0 1em 1em;
}

main dd p:first-child {
  margin-top: 0;
}

/* Headers within Main */
main header h2 {
  margin-top: 2em;
  border-width: 0;
  border-top: 4px solid var(--color-border-default);
  font-size: 130%;
}

main header h3 {
  margin: 2em 0 1.5em;
  border-width: 0;
  border-top: 3px solid var(--color-border-default);
  font-size: 120%;
}

h1:target,
h2:target,
h3:target,
h4:target,
h5:target,
h6:target {
  margin-left: calc(-1 * var(--space-5));
  padding-left: calc(var(--space-5) / 2);
  border-left: calc(var(--space-5) / 2) solid var(--color-border-default);
}

main .anchor-link:target {
  scroll-margin-top: calc(var(--layout-header-height) + 2rem);
}


/* Utility Classes */
.hide { display: none !important; }
.initially-hidden { display: none; }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border-width: 0;
}



/* Method Details */
main .method-source-code {
  visibility: hidden;
  max-height: 0;
  overflow: auto;
  transition: max-height var(--transition-base), visibility var(--transition-base);
}

main .method-source-code pre {
  border-color: var(--color-accent-hover);
  width: 100%;
  box-sizing: border-box;
}

main .method-source-code.active-menu {
  visibility: visible;
  max-height: 100vh;
}

main .method-description .method-calls-super {
  color: var(--color-text-primary);
  font-weight: bold;
}

main .method-detail {
  margin-bottom: 2.5em;
}

main .method-detail:target {
  margin-left: calc(-1 * var(--space-5));
  padding-left: calc(var(--space-5) / 2);
  border-left: calc(var(--space-5) / 2) solid var(--color-border-default);
}

main .method-header {
  display: inline-block;
  max-width: calc(100% - 6em); /* 6em is the width of the source code toggle */
}

main .method-heading {
  position: relative;
  font-family: var(--font-code);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
}

main .method-heading .method-name {
  font-weight: var(--font-weight-semibold);
}

main .method-heading .method-args {
  font-weight: var(--font-weight-normal);
}

main .method-controls {
  line-height: 20px;
  float: right;
  color: var(--color-accent-hover);
  cursor: pointer;
}

main .method-description,
main .aliases {
  margin-top: 0.75em;
  color: var(--color-text-primary);
}

main .aliases {
  padding-top: 4px;
  font-style: italic;
  cursor: default;
}

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

main .mixin-from {
  font-size: 80%;
  font-style: italic;
  margin-bottom: 0.75em;
}

main .method-description ul {
  margin-left: 1.5em;
}

main #attribute-method-details .method-detail:hover {
  background-color: transparent;
  cursor: default;
}

main .attribute-access-type {
  text-transform: uppercase;
}

/* Small screen adjustments */
@media (width <= 480px) {
  nav {
    width: 85%;
    max-width: 320px;
  }

  main {
    margin: 0;
    padding: var(--space-4);
    max-width: 100%;
  }

  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  main .method-controls {
    margin-top: 10px;
    float: none;
  }
}



/* 9. Search Modal (Mobile) */
.search-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
}

.search-modal:not([hidden]) {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-16) var(--space-4);
}

/* Reduce padding on very small screens */
@media (width <= 420px) {
  .search-modal:not([hidden]) {
    padding: var(--space-4) var(--space-3);
  }

  .search-modal-content {
    border-radius: var(--radius-md);
  }

  .search-modal-header {
    padding: var(--space-3);
  }

  .search-modal-body {
    padding: var(--space-3);
  }

  .search-modal-form input {
    font-size: var(--font-size-base);
    min-width: 0; /* Allow input to shrink */
  }

  .search-modal-form {
    gap: var(--space-2);
  }

  .search-modal-close {
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
  }
}

.search-modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  z-index: 1;
}

.search-modal-content {
  position: relative;
  z-index: 2;
  background: var(--color-background-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.search-modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border-default);
}

.search-modal-form {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.search-modal-icon {
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.search-modal-form input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  padding: 0;
}

.search-modal-form input::placeholder {
  color: var(--color-text-tertiary);
}

.search-modal-close {
  padding: var(--space-2) var(--space-4);
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}

.search-modal-close:hover {
  background: var(--color-background-tertiary);
  border-color: var(--color-border-default);
}

.search-modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  flex: 1;
}

.search-modal-empty {
  text-align: center;
  color: var(--color-text-tertiary);
  padding: var(--space-12) 0;
}

.search-modal-results {
  list-style: none;
  margin: 0;
  padding: 0;
}

.search-modal-results.initially-hidden {
  display: block !important; /* Override initially-hidden */
}

.search-modal-results li {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  margin-bottom: var(--space-2);
}

.search-modal-results li:hover {
  background: var(--color-background-secondary);
}

.search-modal-results a {
  color: var(--color-text-primary);
}

.search-modal-results .search-match {
  margin: 0;
  font-size: var(--font-size-base);
}

.search-modal-results .search-match a {
  text-decoration: none;
}

.search-modal-results .search-namespace {
  margin: var(--space-1) 0 0 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.search-modal-results .search-snippet {
  margin: var(--space-1) 0 0 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* 10. Right Sidebar - Table of Contents */
aside.table-of-contents {
  grid-area: toc;
  align-self: start;
  position: sticky;
  top: var(--layout-header-height);
  padding: var(--space-8) var(--space-6);
  border: none;
  border-left: 1px solid var(--color-border-default);
  font-size: var(--font-size-base);
}

aside.table-of-contents * {
  border-right: none !important;
  outline: none !important;
}

aside.table-of-contents .toc-sticky {
  display: flex;
  flex-direction: column;

  /* Exclude header height and top/bottom padding of aside.table-of-contents */
  height: calc(100vh - var(--layout-header-height) - var(--space-8) * 2);
}

aside.table-of-contents .toc-sticky nav {
  height: auto;
}

aside.table-of-contents .toc-list > .toc-h2 {
  margin-left: var(--space-4);
}

aside.table-of-contents .toc-list > .toc-h3 {
  margin-left: var(--space-8);
}

/* Hide TOC on mobile/tablet */
@media (width <= 1279px) {
  aside.table-of-contents {
    display: none;
  }

  body.has-toc {
    grid-template-columns: var(--layout-sidebar-width) 1fr;
    grid-template-areas:
      "header header"
      "nav main"
      "footer footer";
  }
}

/* Tablet adjustments (between mobile and desktop) */
@media (width >= 768px) and (width <= 1023px) {
  header.top-navbar {
    padding: 0 var(--space-6);
  }

  main {
    padding: var(--space-8) var(--space-6);
    max-width: 100%;
  }
}

.table-of-contents h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0 0 var(--space-5) 0;
  color: var(--color-text-primary);
}

.table-of-contents ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.table-of-contents ul ul {
  margin-top: var(--space-3);
  margin-left: var(--space-5);
  border-left: 1px solid var(--color-border-default);
  padding-left: var(--space-4);
}

.table-of-contents li {
  margin-bottom: var(--space-3);
}

.table-of-contents a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  line-height: var(--line-height-relaxed);
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Nav hover styles sit here to keep specificity ordering with TOC links */
nav a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.table-of-contents a:hover {
  color: var(--color-link-hover);
}

.table-of-contents a.active {
  color: var(--color-accent-primary);
  font-weight: var(--font-weight-medium);
}

ol.breadcrumb {
  display: flex;
  padding: 0;
  margin: 0 0 1em;
}

ol.breadcrumb li {
  display: block;
  list-style: none;
  font-size: 125%;
}

/* 11. Footer */
footer.site-footer {
  grid-area: footer;
  background: var(--color-background-secondary);
  border-top: 1px solid var(--color-border-default);
  padding: var(--space-12) var(--space-6);
}

footer.site-footer .footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
}

footer.site-footer h3 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4) 0;
  letter-spacing: 0.05em;
}

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

footer.site-footer li {
  margin-bottom: var(--space-2);
}

footer.site-footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

footer.site-footer a:hover {
  color: var(--color-link-hover);
}

footer.site-footer .footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-default);
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

footer.site-footer .footer-bottom:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

/* Search */
#search-section {
  padding: var(--space-6);
  background-color: var(--color-background-primary);
  border-bottom: 1px solid var(--color-border-default);
}

#search-field-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

#search-field {
  width: 100%;
  padding: var(--space-2) var(--space-4) var(--space-2) 2.5rem;
  border: 1px solid var(--color-border-default);
  border-radius: 1.25rem;
  font-size: var(--font-size-sm);
  outline: none;
  transition: border-color var(--transition-base);
  color: var(--color-text-primary);
}

#search-field:focus {
  border-color: var(--color-accent-primary);
}

#search-field::placeholder {
  color: var(--color-text-primary);
}

#search-field-wrapper::before {
  content: "\1F50D";
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  opacity: 0.6;
}

/* Search Results */
#search-results {
  font-family: var(--font-primary);
  font-weight: 300;
}

#search-results a {
  color: var(--color-text-primary);
}

#search-results a:hover {
  color: var(--color-accent-primary);
}

#search-results .search-match {
  font-family: var(--font-heading);
  font-weight: normal;
}

#search-results .search-selected {
  background: var(--color-code-bg);
  border-bottom: 1px solid transparent;
}

#search-results li {
  list-style: none;
  border-bottom: 1px solid var(--color-border-default);
  margin-bottom: 0.5em;
}

#search-results li:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

#search-results li p {
  padding: 0;
  margin: 0.5em;
}

#search-results .search-namespace {
  font-weight: bold;
}

#search-results li em {
  background-color: var(--color-search-highlight-bg);
  font-style: normal;
}

#search-results pre {
  margin: 0.5em;
  font-family: var(--font-code);
}

header.top-navbar #search-field {
  width: 100%;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  background: var(--color-background-primary);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

header.top-navbar #search-field:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

header.top-navbar #search-field::placeholder {
  color: var(--color-text-tertiary);
}

/* Search results dropdown in navbar */
header.top-navbar #search-results {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  width: var(--layout-search-width);
  max-height: 60vh;
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  z-index: var(--z-popover);
  margin: 0;
  padding: 0;
}

header.top-navbar #search-results.initially-hidden {
  display: none;
}

header.top-navbar #search-results[aria-expanded="false"] {
  display: none;
}
