/* ============================================
   KANTESTI API DOCS - Modern Professional Styles
   Health AI Software Documentation
   Cross-browser: Chrome, Firefox, Safari, Edge, Opera, Yandex
   Devices: Mobile, Tablet, Desktop, 4K
   ============================================ */

/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
  /* Primary Brand Colors - Medical Purple-Blue Trust Theme */
  --primary: #6366f1;
  --primary-rgb: 99, 102, 241;
  --primary-dark: #4f46e5;
  --primary-darker: #4338ca;
  --primary-light: #e0e7ff;
  --primary-lighter: #eef2ff;

  /* Secondary Colors - Deep Purple */
  --secondary: #1e1b4b;
  --secondary-rgb: 30, 27, 75;

  /* Accent Colors - Teal Health Theme */
  --accent: #14b8a6;
  --accent-rgb: 20, 184, 166;
  --accent-light: #ccfbf1;

  /* Status Colors */
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --info: #3b82f6;
  --info-light: #dbeafe;

  /* Neutral Colors */
  --white: #ffffff;
  --black: #000000;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Semantic Colors */
  --bg: var(--white);
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  --bg-code: #0f172a;
  --text: var(--gray-800);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --text-light: var(--gray-400);
  --border: var(--gray-200);
  --border-light: var(--gray-100);

  /* Spacing Scale */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --sidebar-width: 280px;
  --sidebar-width-collapsed: 60px;
  --toc-width: 220px;
  --content-max: 850px;
  --header-height: 64px;
  --container-max: 1440px;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'JetBrains Mono', Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 20px rgba(var(--primary-rgb), 0.15);
  --shadow-glow-lg: 0 0 40px rgba(var(--primary-rgb), 0.2);

  /* Transitions - Optimized for performance */
  --transition-fast: 100ms ease-out;
  --transition-base: 150ms ease-out;
  --transition-slow: 200ms ease-out;
  --transition-slower: 300ms ease-out;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;

  /* Gradients - Purple-Blue Health Theme */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-accent: linear-gradient(135deg, #14b8a6 0%, #2dd4bf 100%);
  --gradient-dark: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  --gradient-shine: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
  --gradient-hero: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --gradient-health: linear-gradient(135deg, #6366f1 0%, #14b8a6 100%);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-code: #0c1222;
    --text: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    --border: #334155;
    --border-light: #1e293b;
    --primary-light: rgba(0, 102, 204, 0.2);
    --primary-lighter: rgba(0, 102, 204, 0.1);
  }
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*, *::before, *::after {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
     -moz-text-size-adjust: 100%;
      -ms-text-size-adjust: 100%;
          text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    -webkit-animation-duration: 0.01ms !important;
            animation-duration: 0.01ms !important;
    -webkit-animation-iteration-count: 1 !important;
            animation-iteration-count: 1 !important;
    -webkit-transition-duration: 0.01ms !important;
         -o-transition-duration: 0.01ms !important;
            transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

/* Focus States - Accessibility */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  -webkit-box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
          box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
}

/* Selection */
::-moz-selection {
  background: var(--primary);
  color: var(--white);
}
::selection {
  background: var(--primary);
  color: var(--white);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

/* Firefox Scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--gray-300) var(--bg-secondary);
}

/* Links */
a {
  color: var(--primary);
  text-decoration: none;
  -webkit-transition: color var(--transition-fast), opacity var(--transition-fast);
  -o-transition: color var(--transition-fast), opacity var(--transition-fast);
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

a:active {
  opacity: 0.8;
}

/* Images */
img, video, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============================================
   Skip Link - Accessibility
   ============================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: var(--z-tooltip);
  padding: var(--space-3) var(--space-4);
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  border-radius: var(--radius-md);
  -webkit-transition: top var(--transition-fast);
  -o-transition: top var(--transition-fast);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
          backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  z-index: var(--z-fixed);
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  padding: 0 var(--space-4);
  -webkit-transition: background var(--transition-base), -webkit-box-shadow var(--transition-base);
  transition: background var(--transition-base), -webkit-box-shadow var(--transition-base);
  -o-transition: background var(--transition-base), box-shadow var(--transition-base);
  transition: background var(--transition-base), box-shadow var(--transition-base);
  transition: background var(--transition-base), box-shadow var(--transition-base), -webkit-box-shadow var(--transition-base);
}

@supports not ((-webkit-backdrop-filter: blur(12px)) or (backdrop-filter: blur(12px))) {
  .header {
    background: rgba(255, 255, 255, 0.98);
  }
}

@media (prefers-color-scheme: dark) {
  .header {
    background: rgba(15, 23, 42, 0.9);
    border-bottom-color: var(--border);
  }
}

.header.is-scrolled {
  -webkit-box-shadow: var(--shadow-md);
          box-shadow: var(--shadow-md);
}

/* Logo */
.header__logo {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--text);
  -webkit-transition: -webkit-transform var(--transition-fast);
  transition: -webkit-transform var(--transition-fast);
  -o-transition: transform var(--transition-fast);
  transition: transform var(--transition-fast);
  transition: transform var(--transition-fast), -webkit-transform var(--transition-fast);
}

.header__logo:hover {
  color: var(--text);
  -webkit-transform: translateY(-1px);
      -ms-transform: translateY(-1px);
          transform: translateY(-1px);
}

.header__logo svg {
  width: 36px;
  height: 36px;
  -webkit-filter: drop-shadow(0 2px 4px rgba(var(--primary-rgb), 0.3));
          filter: drop-shadow(0 2px 4px rgba(var(--primary-rgb), 0.3));
}

/* Header Navigation */
.header__nav {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.header__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
}

.header__link:hover {
  color: var(--primary);
  background: var(--primary-lighter);
}

.header__version {
  display: -webkit-inline-box;
  display: -webkit-inline-flex;
  display: -moz-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  padding: var(--space-1) var(--space-2);
  background: var(--gradient-primary);
  color: var(--white);
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
  letter-spacing: 0.025em;
}

/* Language Selector */
.lang-selector {
  position: relative;
}

.lang-selector__btn {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  min-width: 120px;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
     -moz-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.lang-selector__btn:hover {
  border-color: var(--primary);
  -webkit-box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
          box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.lang-selector__btn svg {
  -webkit-transition: -webkit-transform var(--transition-fast);
  transition: -webkit-transform var(--transition-fast);
  -o-transition: transform var(--transition-fast);
  transition: transform var(--transition-fast);
  transition: transform var(--transition-fast), -webkit-transform var(--transition-fast);
}

.lang-selector.is-open .lang-selector__btn svg {
  -webkit-transform: rotate(180deg);
      -ms-transform: rotate(180deg);
          transform: rotate(180deg);
}

.lang-selector__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  -webkit-box-shadow: var(--shadow-xl);
          box-shadow: var(--shadow-xl);
  min-width: 160px;
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  -webkit-transform: translateY(-8px);
      -ms-transform: translateY(-8px);
          transform: translateY(-8px);
  -webkit-transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  -o-transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  z-index: 9999;
}

.lang-selector.is-open .lang-selector__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  -webkit-transform: translateY(0);
      -ms-transform: translateY(0);
          transform: translateY(0);
}

.lang-selector__item {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--text);
  border-radius: var(--radius-md);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
}

.lang-selector__item:hover {
  background: var(--bg-secondary);
  color: var(--primary);
}

.lang-selector__item.is-active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
     -moz-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  color: var(--text);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  margin-left: auto;
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
}

.menu-toggle:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.menu-toggle:active {
  -webkit-transform: scale(0.95);
      -ms-transform: scale(0.95);
          transform: scale(0.95);
}

/* Menu toggle active state (when sidebar is open) */
.menu-toggle[aria-expanded="true"] {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.menu-toggle[aria-expanded="true"]:hover {
  background: var(--primary-dark);
}

/* ============================================
   Mobile & Tablet Header Responsive
   ============================================ */
/* Small Mobile (< 480px) */
@media (max-width: 479px) {
  .header {
    padding: 0 var(--space-3);
  }

  .header__logo span {
    display: none;
  }

  .header__logo svg {
    width: 32px;
    height: 32px;
  }
}

/* Mobile & Tablet (< 1024px) */
@media (max-width: 1023px) {
  .menu-toggle {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
  }

  .header__nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
       -moz-box-orient: vertical;
       -moz-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: stretch;
    -webkit-align-items: stretch;
       -moz-box-align: stretch;
        -ms-flex-align: stretch;
            align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    -webkit-box-shadow: var(--shadow-lg);
            box-shadow: var(--shadow-lg);
    -webkit-animation: slideDown var(--transition-base) ease;
            animation: slideDown var(--transition-base) ease;
  }

  .header__nav.is-open {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
  }

  .header__link {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
  }

  .header__version {
    margin: var(--space-2) var(--space-4);
    width: -webkit-fit-content;
    width: -moz-fit-content;
    width: fit-content;
  }

  .lang-selector {
    width: 100%;
  }

  .lang-selector__btn {
    width: 100%;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
       -moz-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    padding: var(--space-3) var(--space-4);
  }

  .lang-selector__dropdown {
    position: relative;
    top: var(--space-2);
    -webkit-box-shadow: none;
            box-shadow: none;
    border: 1px solid var(--border);
    width: 100%;
    /* Override default hidden state for mobile - will be controlled by is-open */
    display: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    -webkit-transform: none;
        -ms-transform: none;
            transform: none;
  }

  .lang-selector.is-open .lang-selector__dropdown {
    display: block;
  }
}

/* ============================================
   Layout
   ============================================ */
.layout {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  padding-top: var(--header-height);
  min-height: 100vh;
}

/* Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  -webkit-backdrop-filter: blur(4px);
          backdrop-filter: blur(4px);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  -webkit-transition: opacity var(--transition-base);
  -o-transition: opacity var(--transition-base);
  transition: opacity var(--transition-base);
  cursor: pointer;
}

.sidebar-overlay.is-visible {
  display: block;
  opacity: 1;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-light);
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-6);
  z-index: var(--z-fixed);
  -webkit-transition: -webkit-transform var(--transition-base);
  transition: -webkit-transform var(--transition-base);
  -o-transition: transform var(--transition-base);
  transition: transform var(--transition-base);
  transition: transform var(--transition-base), -webkit-transform var(--transition-base);
  -webkit-overflow-scrolling: touch;
}

.sidebar__section {
  margin-bottom: var(--space-6);
}

.sidebar__title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  padding: 0 var(--space-3);
}

.sidebar__nav {
  list-style: none;
}

.sidebar__link {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-lg);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  margin-bottom: var(--space-1);
  min-height: 44px; /* Touch target */
}

.sidebar__link:hover {
  background: var(--bg-tertiary);
  color: var(--primary);
}

.sidebar__link.is-active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  -webkit-box-shadow: inset 3px 0 0 var(--primary);
          box-shadow: inset 3px 0 0 var(--primary);
}

.sidebar__link svg {
  width: 18px;
  height: 18px;
  opacity: 0.7;
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
}

.sidebar__link.is-active svg {
  opacity: 1;
}

/* Sidebar Language Selector (Mobile) - Dropdown Style */
.sidebar__lang {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  position: relative;
}

.sidebar__lang-title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  padding: 0 var(--space-3);
}

/* Dropdown trigger button */
.sidebar__lang-btn {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
     -moz-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  width: calc(100% - var(--space-6));
  margin: 0 var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
}

.sidebar__lang-btn:hover {
  border-color: var(--primary);
  background: var(--primary-lighter);
}

.sidebar__lang-btn svg {
  width: 16px;
  height: 16px;
  -webkit-transition: -webkit-transform var(--transition-fast);
  transition: -webkit-transform var(--transition-fast);
  -o-transition: transform var(--transition-fast);
  transition: transform var(--transition-fast);
  transition: transform var(--transition-fast), -webkit-transform var(--transition-fast);
  opacity: 0.6;
}

.sidebar__lang.is-open .sidebar__lang-btn {
  border-color: var(--primary);
  background: var(--primary-lighter);
}

.sidebar__lang.is-open .sidebar__lang-btn svg {
  -webkit-transform: rotate(180deg);
      -ms-transform: rotate(180deg);
          transform: rotate(180deg);
}

/* Dropdown list */
.sidebar__lang-dropdown {
  display: none;
  margin: var(--space-2) var(--space-3) 0;
  padding: var(--space-2);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  -webkit-box-shadow: var(--shadow-lg);
          box-shadow: var(--shadow-lg);
}

.sidebar__lang.is-open .sidebar__lang-dropdown {
  display: block;
}

.sidebar__lang-item {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
}

.sidebar__lang-item:hover {
  background: var(--bg-tertiary);
  color: var(--primary);
}

.sidebar__lang-item.is-active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.sidebar__lang-item.is-active::after {
  content: '✓';
  margin-left: auto;
  font-size: var(--text-xs);
}

/* Mobile Sidebar */
@media (max-width: 1023px) {
  .sidebar {
    -webkit-transform: translateX(-100%);
        -ms-transform: translateX(-100%);
            transform: translateX(-100%);
    -webkit-box-shadow: var(--shadow-2xl);
            box-shadow: var(--shadow-2xl);
    z-index: var(--z-overlay);
    width: 85vw;
    max-width: 320px;
    visibility: hidden;
  }

  .sidebar.is-open {
    -webkit-transform: translateX(0);
        -ms-transform: translateX(0);
            transform: translateX(0);
    visibility: visible;
  }

  /* Ensure main content is full width on mobile */
  .layout {
    display: block;
  }
}

/* Extra small mobile - full width sidebar */
@media (max-width: 479px) {
  .sidebar {
    width: 100vw;
    max-width: 100vw;
  }
}

/* ============================================
   Main Content
   ============================================ */
.main {
  -webkit-box-flex: 1;
  -webkit-flex: 1;
     -moz-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--space-8) var(--space-6);
  max-width: calc(100% - var(--sidebar-width));
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  gap: var(--space-8);
}

.content {
  -webkit-box-flex: 1;
  -webkit-flex: 1;
     -moz-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  max-width: var(--content-max);
  min-width: 0;
}

/* Responsive Main */
@media (max-width: 1023px) {
  .main {
    margin-left: 0;
    max-width: 100%;
    padding: var(--space-6) var(--space-4);
  }
}

@media (max-width: 639px) {
  .main {
    padding: var(--space-4) var(--space-3);
  }
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--text);
  margin-bottom: var(--space-4);
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}

h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
}

h2:first-of-type {
  margin-top: var(--space-8);
  padding-top: 0;
  border-top: none;
}

h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-8);
}

h4 {
  font-size: var(--text-lg);
  margin-top: var(--space-6);
  color: var(--text-secondary);
}

p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

.lead {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

ul, ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
  color: var(--text-secondary);
}

/* Responsive Typography */
@media (max-width: 639px) {
  h1 {
    font-size: var(--text-2xl);
  }

  h2 {
    font-size: var(--text-xl);
    margin-top: var(--space-8);
    padding-top: var(--space-6);
  }

  h3 {
    font-size: var(--text-lg);
  }

  .lead {
    font-size: var(--text-base);
  }
}

/* ============================================
   Badges
   ============================================ */
.badge {
  display: -webkit-inline-box;
  display: -webkit-inline-flex;
  display: -moz-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  white-space: nowrap;
}

.badge--get {
  background: var(--success-light);
  color: #047857;
}

.badge--post {
  background: var(--info-light);
  color: #1d4ed8;
}

.badge--put {
  background: var(--warning-light);
  color: #b45309;
}

.badge--delete {
  background: var(--danger-light);
  color: #b91c1c;
}

.badge--deprecated {
  background: var(--gray-200);
  color: var(--gray-600);
}

.badge--latest {
  background: var(--gradient-accent);
  color: var(--white);
}

.badge--stable {
  background: var(--info-light);
  color: #1d4ed8;
}

.badge--new {
  background: var(--gradient-hero);
  color: var(--white);
  -webkit-animation: pulse 2s infinite;
          animation: pulse 2s infinite;
}

.badge--released {
  background: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
  color: var(--white);
  -webkit-animation: pulse 3s infinite;
          animation: pulse 3s infinite;
}

.badge--icr {
  background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
  color: var(--white);
  font-weight: 700;
}

/* ============================================
   Cards
   ============================================ */
.card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  -webkit-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  -webkit-transition: opacity var(--transition-base);
  -o-transition: opacity var(--transition-base);
  transition: opacity var(--transition-base);
}

.card:hover {
  -webkit-box-shadow: var(--shadow-md);
          box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

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

.card--highlight {
  border-left: 4px solid var(--primary);
  background: var(--primary-lighter);
}

.card--highlight::before {
  display: none;
}

.card--warning {
  border-left: 4px solid var(--warning);
  background: var(--warning-light);
}

.card--warning::before {
  display: none;
}

.card--success {
  border-left: 4px solid var(--success);
  background: var(--success-light);
}

.card--success::before {
  display: none;
}

.card--danger {
  border-left: 4px solid var(--danger);
  background: var(--danger-light);
}

.card--danger::before {
  display: none;
}

.card__title {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-2);
  color: var(--text);
}

.card ul {
  margin-bottom: 0;
}

.card li:last-child {
  margin-bottom: 0;
}

/* ============================================
   ICR Module - Benchmark & Performance
   ============================================ */
.card--icr {
  border-left: 4px solid #f59e0b;
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
}

@media (prefers-color-scheme: dark) {
  .card--icr {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(249, 115, 22, 0.1) 100%);
    border-left-color: #f59e0b;
  }
}

.card--icr::before {
  background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
}

.icr-benchmark {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-6);
  padding: var(--space-6);
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border-radius: var(--radius-xl);
  border: 1px solid #fcd34d;
  margin-bottom: var(--space-6);
  -webkit-flex-wrap: wrap;
      -ms-flex-wrap: wrap;
          flex-wrap: wrap;
}

@media (prefers-color-scheme: dark) {
  .icr-benchmark {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(249, 115, 22, 0.08) 100%);
    border-color: rgba(245, 158, 11, 0.3);
  }
}

.icr-benchmark__stat {
  text-align: center;
  -webkit-box-flex: 1;
  -webkit-flex: 1 1 120px;
     -moz-box-flex: 1;
      -ms-flex: 1 1 120px;
          flex: 1 1 120px;
  min-width: 120px;
}

.icr-benchmark__number {
  font-size: var(--text-4xl);
  font-weight: 800;
  background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.icr-benchmark__label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: var(--space-1);
}

.icr-benchmark__detail {
  -webkit-box-flex: 2;
  -webkit-flex: 2 1 280px;
     -moz-box-flex: 2;
      -ms-flex: 2 1 280px;
          flex: 2 1 280px;
}

.icr-benchmark__detail h4 {
  margin-bottom: var(--space-2);
  color: var(--text);
}

.icr-benchmark__detail p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.icr-release-badge {
  display: -webkit-inline-box;
  display: -webkit-inline-flex;
  display: -moz-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
  color: var(--white);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

/* ============================================
   Tables
   ============================================ */
.table-wrapper {
  overflow-x: auto;
  margin-bottom: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

th, td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  background: var(--bg-secondary);
  white-space: nowrap;
  color: var(--text);
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 1;
}

td {
  color: var(--text-secondary);
}

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

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

/* Parameters Table */
.params-table th:first-child,
.params-table td:first-child {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--primary);
  font-weight: 500;
}

.params-table .required {
  color: var(--danger);
  font-weight: 600;
}

.params-table .optional {
  color: var(--text-muted);
}

/* ============================================
   Code Blocks
   ============================================ */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-tertiary);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--danger);
  word-break: break-word;
}

pre {
  position: relative;
  background: var(--bg-code);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  -webkit-box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.05);
          box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.05);
}

pre code {
  background: none;
  padding: 0;
  color: #e2e8f0;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  white-space: pre;
  word-break: normal;
}

/* Syntax Highlighting */
.token-keyword { color: #f472b6; }
.token-string { color: #4ade80; }
.token-number { color: #60a5fa; }
.token-comment { color: #64748b; font-style: italic; }
.token-property { color: #fbbf24; }
.token-operator { color: #94a3b8; }
.token-function { color: #c084fc; }
.token-class { color: #22d3ee; }
.token-punctuation { color: #94a3b8; }

/* Copy Button */
.copy-btn {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(4px);
          backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--gray-400);
  font-size: var(--text-xs);
  font-weight: 500;
  cursor: pointer;
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: var(--space-1);
  min-width: 44px;
  min-height: 36px;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
     -moz-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.2);
}

.copy-btn.is-copied {
  background: var(--success);
  color: var(--white);
  border-color: var(--success);
}

/* ============================================
   Endpoint Blocks
   ============================================ */
.endpoint {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-8);
  overflow: hidden;
  -webkit-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
}

.endpoint:hover {
  -webkit-box-shadow: var(--shadow-lg);
          box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.endpoint__header {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-flex-wrap: wrap;
      -ms-flex-wrap: wrap;
          flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.endpoint__method {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--radius-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.endpoint__method--get {
  background: var(--gradient-accent);
  color: var(--white);
}

.endpoint__method--post {
  background: var(--gradient-primary);
  color: var(--white);
}

.endpoint__method--put {
  background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  color: var(--white);
}

.endpoint__method--delete {
  background: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
  color: var(--white);
}

.endpoint__path {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}

.endpoint__body {
  padding: var(--space-6);
}

/* Responsive Endpoint */
@media (max-width: 639px) {
  .endpoint__header {
    padding: var(--space-3) var(--space-4);
  }

  .endpoint__path {
    font-size: var(--text-xs);
    width: 100%;
    margin-top: var(--space-2);
  }

  .endpoint__body {
    padding: var(--space-4);
  }

  .endpoint__body pre {
    padding: var(--space-4);
    font-size: var(--text-xs);
  }
}

/* ============================================
   Search
   ============================================ */
.search {
  position: relative;
  margin-bottom: var(--space-6);
}

.search__input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  padding-left: 44px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-family: inherit;
  color: var(--text);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  min-height: 44px;
}

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

.search__input::-moz-placeholder {
  color: var(--text-muted);
}

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

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

.search__input:focus {
  border-color: var(--primary);
  -webkit-box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1);
          box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1);
}

.search__icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  -webkit-transform: translateY(-50%);
      -ms-transform: translateY(-50%);
          transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

.search__results {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  right: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  -webkit-box-shadow: var(--shadow-xl);
          box-shadow: var(--shadow-xl);
  max-height: 320px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  -webkit-transform: translateY(-8px);
      -ms-transform: translateY(-8px);
          transform: translateY(-8px);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.search__results.is-visible {
  opacity: 1;
  visibility: visible;
  -webkit-transform: translateY(0);
      -ms-transform: translateY(0);
          transform: translateY(0);
}

.search__result {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
  -webkit-transition: background var(--transition-fast);
  -o-transition: background var(--transition-fast);
  transition: background var(--transition-fast);
}

.search__result:hover {
  background: var(--bg-secondary);
}

.search__result:last-child {
  border-bottom: none;
}

/* ============================================
   Table of Contents (TOC)
   ============================================ */
.toc {
  position: -webkit-sticky;
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
  width: var(--toc-width);
  max-height: calc(100vh - var(--header-height) - var(--space-16));
  overflow-y: auto;
  font-size: var(--text-sm);
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
  padding-left: var(--space-6);
  border-left: 1px solid var(--border);
  -ms-scroll-chaining: none;
      overscroll-behavior: contain;
}

.toc__title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

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

.toc__link {
  display: block;
  padding: var(--space-2) 0;
  color: var(--text-muted);
  -webkit-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
  padding-left: var(--space-4);
  margin-left: calc(var(--space-4) * -1);
}

.toc__link:hover {
  color: var(--text);
}

.toc__link.is-active {
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 500;
}

/* Hide TOC on smaller screens */
@media (max-width: 1279px) {
  .toc {
    display: none;
  }
}

/* ============================================
   Footer
   ============================================ */
.footer {
  margin-top: var(--space-12);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer__text {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer__link {
  color: var(--primary);
  font-weight: 600;
}

.footer__link:hover {
  text-decoration: underline;
}

/* ============================================
   Utility Classes
   ============================================ */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.text-muted { color: var(--text-muted); }
.text-sm { font-size: var(--text-sm); }
.font-mono { font-family: var(--font-mono); }

/* ============================================
   Animations
   ============================================ */
@-webkit-keyframes slideDown {
  from {
    opacity: 0;
    -webkit-transform: translateY(-10px);
            transform: translateY(-10px);
  }
  to {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}
@keyframes slideDown {
  from {
    opacity: 0;
    -webkit-transform: translateY(-10px);
            transform: translateY(-10px);
  }
  to {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}

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

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

@-webkit-keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@-webkit-keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .header,
  .sidebar,
  .toc,
  .copy-btn,
  .menu-toggle,
  .lang-selector,
  .search {
    display: none !important;
  }

  .main {
    margin-left: 0 !important;
    max-width: 100% !important;
    padding: 0 !important;
  }

  .content {
    max-width: 100% !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    color: #000;
    background: #fff;
  }

  h1, h2, h3, h4 {
    page-break-after: avoid;
    color: #000;
  }

  h1 {
    -webkit-text-fill-color: #000;
    background: none;
  }

  pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    border: 1px solid #ccc;
    background: #f5f5f5 !important;
    -webkit-box-shadow: none;
            box-shadow: none;
    page-break-inside: avoid;
  }

  pre code {
    color: #000 !important;
  }

  .endpoint {
    page-break-inside: avoid;
    border: 1px solid #ccc;
    -webkit-box-shadow: none;
            box-shadow: none;
  }

  .card {
    page-break-inside: avoid;
    -webkit-box-shadow: none;
            box-shadow: none;
    border: 1px solid #ccc;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }
}

/* ============================================
   High DPI / Retina Displays
   ============================================ */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* ============================================
   Large Desktop / 4K Screens
   ============================================ */
@media (min-width: 1920px) {
  :root {
    --sidebar-width: 320px;
    --toc-width: 260px;
    --content-max: 900px;
  }

  html {
    font-size: 18px;
  }
}

@media (min-width: 2560px) {
  :root {
    --sidebar-width: 360px;
    --toc-width: 300px;
    --content-max: 1000px;
  }

  .main {
    padding: var(--space-12) var(--space-10);
  }
}

/* ============================================
   Touch Device Optimizations
   ============================================ */
@media (hover: none) and (pointer: coarse) {
  /* Larger touch targets */
  .sidebar__link,
  .lang-selector__item,
  .search__result,
  .toc__link {
    min-height: 48px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
       -moz-box-align: center;
        -ms-flex-align: center;
            align-items: center;
  }

  /* Remove hover effects that don't work well on touch */
  .card:hover,
  .endpoint:hover {
    -webkit-box-shadow: none;
            box-shadow: none;
    border-color: var(--border);
  }

  .card:hover::before {
    opacity: 0;
  }
}

/* ============================================
   Landscape Mobile
   ============================================ */
@media (max-height: 500px) and (orientation: landscape) {
  .header {
    height: 52px;
  }

  :root {
    --header-height: 52px;
  }

  .sidebar {
    padding: var(--space-4);
  }

  .main {
    padding: var(--space-4);
  }
}

/* ============================================
   Safe Area (Notch) Support
   ============================================ */
@supports (padding: max(0px)) {
  .header {
    padding-left: max(var(--space-4), env(safe-area-inset-left));
    padding-right: max(var(--space-4), env(safe-area-inset-right));
  }

  .sidebar {
    padding-left: max(var(--space-6), env(safe-area-inset-left));
  }

  .main {
    padding-right: max(var(--space-6), env(safe-area-inset-right));
  }
}

/* ============================================
   Reduced Data Mode
   ============================================ */
@media (prefers-reduced-data: reduce) {
  * {
    background-image: none !important;
  }

  .badge--latest,
  .badge--new,
  .endpoint__method--get,
  .endpoint__method--post,
  .endpoint__method--put,
  .endpoint__method--delete,
  .header__version,
  h1 {
    background: var(--primary) !important;
    -webkit-text-fill-color: initial;
  }

  h1 {
    background: none !important;
    color: var(--primary) !important;
  }
}

/* ============================================
   COMPREHENSIVE DARK MODE SUPPORT
   Enhanced for mobile day/night mode
   ============================================ */
@media (prefers-color-scheme: dark) {
  /* Enhanced Dark Mode Color Variables */
  :root {
    /* Status Colors - Dark Mode Optimized */
    --success: #22c55e;
    --success-light: rgba(34, 197, 94, 0.15);
    --warning: #fbbf24;
    --warning-light: rgba(251, 191, 36, 0.15);
    --danger: #f87171;
    --danger-light: rgba(248, 113, 113, 0.15);
    --info: #60a5fa;
    --info-light: rgba(96, 165, 250, 0.15);

    /* Accent - Brighter for dark mode */
    --accent-light: rgba(20, 184, 166, 0.2);

    /* Enhanced shadows for dark mode */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(var(--primary-rgb), 0.25);
    --shadow-glow-lg: 0 0 40px rgba(var(--primary-rgb), 0.35);
  }

  /* Scrollbar Dark Mode */
  ::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
  }

  ::-webkit-scrollbar-thumb {
    background: var(--gray-600);
    border-color: var(--bg-tertiary);
  }

  ::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
  }

  * {
    scrollbar-color: var(--gray-600) var(--bg-tertiary);
  }

  /* Selection Dark Mode */
  ::-moz-selection {
    background: var(--primary);
    color: var(--white);
  }

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

  /* Focus States - Dark Mode */
  :focus-visible {
    outline-color: var(--primary);
    -webkit-box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.3);
            box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.3);
  }

  /* Header - Dark Mode Enhanced */
  @supports not ((-webkit-backdrop-filter: blur(12px)) or (backdrop-filter: blur(12px))) {
    .header {
      background: rgba(15, 23, 42, 0.98);
    }
  }

  /* Sidebar - Dark Mode */
  .sidebar {
    background: var(--bg-secondary);
    border-right-color: var(--border);
  }

  .sidebar__link:hover {
    background: var(--bg-tertiary);
  }

  .sidebar__link.is-active {
    background: rgba(var(--primary-rgb), 0.15);
    color: #818cf8;
  }

  /* Language Selector - Dark Mode */
  .lang-selector__btn {
    background: var(--bg-tertiary);
    border-color: var(--border);
    color: var(--text);
  }

  .lang-selector__btn:hover {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.1);
  }

  .lang-selector__dropdown {
    background: var(--bg-secondary);
    border-color: var(--border);
    -webkit-box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255, 255, 255, 0.05);
            box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255, 255, 255, 0.05);
  }

  .lang-selector__item:hover {
    background: var(--bg-tertiary);
    color: #818cf8;
  }

  .lang-selector__item.is-active {
    background: rgba(var(--primary-rgb), 0.2);
    color: #818cf8;
  }

  /* Sidebar Overlay - Dark Mode */
  .sidebar-overlay {
    background: rgba(0, 0, 0, 0.7);
  }

  /* Cards - Dark Mode */
  .card {
    background: var(--bg-secondary);
    border-color: var(--border);
  }

  .card:hover {
    border-color: rgba(var(--primary-rgb), 0.3);
    -webkit-box-shadow: var(--shadow-lg), 0 0 0 1px rgba(var(--primary-rgb), 0.1);
            box-shadow: var(--shadow-lg), 0 0 0 1px rgba(var(--primary-rgb), 0.1);
  }

  .card--highlight {
    background: rgba(var(--primary-rgb), 0.1);
    border-left-color: #818cf8;
  }

  .card--warning {
    background: rgba(251, 191, 36, 0.1);
    border-left-color: var(--warning);
  }

  .card--warning .card__title {
    color: #fcd34d;
  }

  .card--success {
    background: rgba(34, 197, 94, 0.1);
    border-left-color: var(--success);
  }

  .card--success .card__title {
    color: #4ade80;
  }

  .card--danger {
    background: rgba(248, 113, 113, 0.1);
    border-left-color: var(--danger);
  }

  .card--danger .card__title {
    color: #fca5a5;
  }

  /* Badges - Dark Mode */
  .badge--get {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
  }

  .badge--post {
    background: rgba(96, 165, 250, 0.2);
    color: #93c5fd;
  }

  .badge--put {
    background: rgba(251, 191, 36, 0.2);
    color: #fcd34d;
  }

  .badge--delete {
    background: rgba(248, 113, 113, 0.2);
    color: #fca5a5;
  }

  .badge--deprecated {
    background: var(--bg-tertiary);
    color: var(--gray-400);
  }

  /* Tables - Dark Mode */
  .table-wrapper {
    border-color: var(--border);
  }

  th {
    background: var(--bg-tertiary);
    color: var(--text);
  }

  th, td {
    border-bottom-color: var(--border);
  }

  tr:hover td {
    background: rgba(var(--primary-rgb), 0.05);
  }

  /* Inline Code - Dark Mode */
  code {
    background: var(--bg-tertiary);
    color: #f472b6;
  }

  /* Endpoints - Dark Mode */
  .endpoint {
    background: var(--bg-secondary);
    border-color: var(--border);
  }

  .endpoint:hover {
    border-color: rgba(var(--primary-rgb), 0.3);
    -webkit-box-shadow: var(--shadow-lg);
            box-shadow: var(--shadow-lg);
  }

  .endpoint__header {
    background: var(--bg-tertiary);
    border-bottom-color: var(--border);
  }

  /* Search - Dark Mode */
  .search__input {
    background: var(--bg-tertiary);
    border-color: var(--border);
    color: var(--text);
  }

  .search__input:focus {
    border-color: var(--primary);
    -webkit-box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
            box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
  }

  .search__results {
    background: var(--bg-secondary);
    border-color: var(--border);
  }

  .search__result {
    border-bottom-color: var(--border);
  }

  .search__result:hover {
    background: var(--bg-tertiary);
  }

  /* TOC - Dark Mode */
  .toc {
    border-left-color: var(--border);
  }

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

  .toc__link:hover {
    color: var(--text);
  }

  .toc__link.is-active {
    color: #818cf8;
    border-left-color: var(--primary);
  }

  /* Footer - Dark Mode */
  .footer {
    border-top-color: var(--border);
  }

  /* H1 Gradient - Dark Mode */
  h1 {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
    -webkit-background-clip: text;
            background-clip: text;
  }

  /* H2 Border - Dark Mode */
  h2 {
    border-top-color: var(--border);
  }

  /* Mobile Menu - Dark Mode */
  .header__nav {
    background: var(--bg-secondary);
    border-bottom-color: var(--border);
  }

  .header__link:hover {
    background: var(--bg-tertiary);
    color: #818cf8;
  }

  /* Menu Toggle - Dark Mode */
  .menu-toggle:hover {
    background: var(--bg-tertiary);
    color: #818cf8;
  }
}

/* ============================================
   ENHANCED MOBILE UX/UI
   Touch-optimized interactions
   ============================================ */

/* Improved Touch Targets - Mobile */
@media (max-width: 1023px) {
  /* Larger tap areas for sidebar links */
  .sidebar__link {
    min-height: 52px;
    padding: var(--space-4);
  }

  /* Better header spacing */
  .header {
    padding: 0 var(--space-3);
  }

  /* Improved menu toggle */
  .menu-toggle {
    width: 48px;
    height: 48px;
  }

  /* Better language selector dropdown */
  .lang-selector__item {
    min-height: 52px;
    padding: var(--space-4);
  }

  /* Improved search input */
  .search__input {
    min-height: 52px;
    font-size: 16px; /* Prevents iOS zoom */
  }

  /* Better card padding on mobile */
  .card {
    padding: var(--space-5);
  }

  /* Enhanced endpoint readability */
  .endpoint__header {
    padding: var(--space-4);
  }

  .endpoint__body {
    padding: var(--space-5);
  }
}

/* Small Mobile Enhancements (< 480px) */
@media (max-width: 479px) {
  /* Better readability */
  body {
    font-size: 15px;
    line-height: 1.7;
  }

  /* Improved card margins */
  .card {
    margin-bottom: var(--space-5);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }

  /* Better table handling */
  .table-wrapper {
    margin-left: calc(var(--space-3) * -1);
    margin-right: calc(var(--space-3) * -1);
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  /* Improved code blocks */
  pre {
    margin-left: calc(var(--space-3) * -1);
    margin-right: calc(var(--space-3) * -1);
    border-radius: 0;
    padding: var(--space-4);
  }

  /* Better endpoint blocks */
  .endpoint {
    margin-left: calc(var(--space-3) * -1);
    margin-right: calc(var(--space-3) * -1);
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  /* Footer spacing */
  .footer {
    padding: var(--space-6) var(--space-3);
  }
}

/* Active States for Touch - Better Feedback */
@media (hover: none) and (pointer: coarse) {
  /* Visual feedback on touch */
  .sidebar__link:active,
  .header__link:active,
  .lang-selector__item:active,
  .lang-selector__btn:active,
  .menu-toggle:active {
    -webkit-transform: scale(0.98);
        -ms-transform: scale(0.98);
            transform: scale(0.98);
    opacity: 0.9;
  }

  /* Card touch feedback */
  .card:active {
    -webkit-transform: scale(0.99);
        -ms-transform: scale(0.99);
            transform: scale(0.99);
  }

  /* Button press states */
  .copy-btn:active {
    -webkit-transform: scale(0.95);
        -ms-transform: scale(0.95);
            transform: scale(0.95);
  }

  /* Enhanced scrolling */
  .sidebar,
  .toc,
  .table-wrapper,
  pre,
  .search__results {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
  }
}

/* Smooth Theme Transitions */
body,
.header,
.sidebar,
.card,
.endpoint,
.search__input,
.lang-selector__btn,
.lang-selector__dropdown,
.table-wrapper,
.toc,
.footer,
.badge,
code,
pre {
  -webkit-transition: background-color 0.3s ease,
              border-color 0.3s ease,
              color 0.3s ease,
              -webkit-box-shadow 0.3s ease;
  transition: background-color 0.3s ease,
              border-color 0.3s ease,
              color 0.3s ease,
              -webkit-box-shadow 0.3s ease;
  -o-transition: background-color 0.3s ease,
              border-color 0.3s ease,
              color 0.3s ease,
              box-shadow 0.3s ease;
  transition: background-color 0.3s ease,
              border-color 0.3s ease,
              color 0.3s ease,
              box-shadow 0.3s ease;
  transition: background-color 0.3s ease,
              border-color 0.3s ease,
              color 0.3s ease,
              box-shadow 0.3s ease,
              -webkit-box-shadow 0.3s ease;
}

/* Respect Reduced Motion for Theme Transitions */
@media (prefers-reduced-motion: reduce) {
  body,
  .header,
  .sidebar,
  .card,
  .endpoint,
  .search__input,
  .lang-selector__btn,
  .lang-selector__dropdown,
  .table-wrapper,
  .toc,
  .footer,
  .badge,
  code,
  pre {
    -webkit-transition: none;
    -o-transition: none;
    transition: none;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border: var(--gray-400);
    --border-light: var(--gray-300);
  }

  .card,
  .endpoint,
  .table-wrapper,
  .search__input,
  .lang-selector__btn,
  .lang-selector__dropdown {
    border-width: 2px;
  }

  .sidebar__link.is-active {
    -webkit-box-shadow: inset 4px 0 0 var(--primary);
            box-shadow: inset 4px 0 0 var(--primary);
  }

  .toc__link.is-active {
    border-left-width: 3px;
  }
}

@media (prefers-contrast: high) and (prefers-color-scheme: dark) {
  :root {
    --border: var(--gray-500);
    --border-light: var(--gray-600);
    --text: #ffffff;
    --text-secondary: #e2e8f0;
  }
}

/* ============================================
   Performance Optimizations
   ============================================ */

/* GPU Acceleration for animated elements */
.sidebar,
.sidebar-overlay,
.menu-toggle,
.lang-selector__dropdown {
  -webkit-transform: translateZ(0);
          transform: translateZ(0);
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  will-change: transform, opacity;
}

/* Content containment for layout performance */
.main {
  contain: layout style;
}

.sidebar {
  contain: layout style paint;
}

.card,
.endpoint {
  contain: layout style;
}

/* Optimize scrolling */
.sidebar,
.main,
.content {
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

/* Reduce repaints on hover */
.sidebar__link,
.card,
.btn {
  will-change: background-color, color;
}

/* Remove will-change after animation */
.sidebar.is-open,
.sidebar-overlay.is-visible {
  will-change: auto;
}

/* Optimize images */
img {
  content-visibility: auto;
}

/* Font display optimization */
@font-face {
  font-display: swap;
}