/* ============================================================
   Kiteworks Developer Portal — Design System
   portal.css — Tokens, reset, components, responsive
   ============================================================ */

/* ============================================================
   1. DESIGN TOKENS — Light Mode (default)
   ============================================================ */
:root {
  /* Brand — Kiteworks official palette */
  --color-brand-primary:    #4A56AF;   /* KW Blue */
  --color-brand-secondary:  #2E3B8C;   /* KW Blue Dark */
  --color-brand-light-var:  #6B7FDB;   /* KW Blue Light */
  --color-brand-accent:     #C28A00;   /* KW Gold Dark (readable on light) */
  --color-brand-accent-dark:#9E6F00;   /* KW Gold Darker */
  --color-brand-accent-light:#FDCA13;  /* KW Signal Gold */
  --color-brand-light:      rgba(74, 86, 175, 0.09);

  /* HTTP Method badges — mapped to brand semantic colors */
  --method-get:     #10B981;
  --method-post:    #485CC7;
  --method-put:     #C28A00;
  --method-patch:   #F59E0B;
  --method-delete:  #EF4444;
  --method-get-bg:      rgba(16, 185, 129, 0.10);
  --method-post-bg:     rgba(72, 92, 199, 0.10);
  --method-put-bg:      rgba(243, 174, 1, 0.12);
  --method-patch-bg:    rgba(245, 158, 11, 0.10);
  --method-delete-bg:   rgba(239, 68, 68, 0.10);

  /* Neutral scale — KW blue-tinted */
  --color-neutral-50:   #F0F1FA;
  --color-neutral-100:  #E4E6F5;
  --color-neutral-200:  #CCCFE3;
  --color-neutral-300:  #A8ADCC;
  --color-neutral-400:  #7B82A8;
  --color-neutral-500:  #535873;
  --color-neutral-600:  #3D4260;
  --color-neutral-700:  #282D4D;
  --color-neutral-800:  #191E3A;
  --color-neutral-900:  #050821;

  /* Semantic */
  --color-bg:             #FFFFFF;
  --color-bg-subtle:      #F0F1FA;
  --color-bg-muted:       #E4E6F5;
  --color-bg-raised:      #FFFFFF;
  --color-surface:        #FFFFFF;
  --color-border:         #CCCFE3;
  --color-border-subtle:  #E4E6F5;
  --color-text:           #050821;
  --color-text-secondary: #3D4260;
  --color-text-muted:     #535873;
  --color-text-inverse:   #FFFFFF;
  --color-link:           #4A56AF;
  --color-link-hover:     #C28A00;
  --color-inline-link:    #4A56AF;   /* Inline prose links — light mode (same as brand-primary) */

  /* Status / HTTP code colors — WCAG AA on both white and --color-bg-muted */
  --color-status-success: #166534;   /* 7.13:1 on white */
  --color-status-warning: #a84500;   /* 5.97:1 on white, 4.82:1 on bg-muted */
  --color-status-error:   #b91c1c;   /* 6.47:1 on white */

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 10px 24px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.05);
  --shadow-xl:  0 20px 48px rgba(0,0,0,0.14), 0 8px 16px rgba(0,0,0,0.06);

  /* Typography */
  --font-sans:         'Host Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:         'Geist Mono', ui-monospace, monospace;
  --font-mono-display: 'Fragment Mono', 'Geist Mono', ui-monospace, monospace;

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

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --font-normal:    400;
  --font-medium:    500;
  --font-semibold:  600;
  --font-bold:      700;

  /* Spacing */
  --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;

  /* Border radius */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* Layout */
  --header-height:  64px;
  --sidebar-width:  272px;
  --content-max:    800px;
  --page-max:       1440px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   200ms ease;
  --transition-slow:   300ms ease;
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================================
   2. DARK MODE TOKENS  — Kiteworks Deep Space
   ============================================================ */
[data-theme="dark"] {
  --color-brand-primary:    #4D60FB;   /* KW Electric Indigo */
  --color-brand-secondary:  #425CC7;   /* KW Glow Blue */
  --color-brand-light-var:  #8890B2;
  --color-brand-accent:     #FDCA13;   /* KW Signal Gold */
  --color-brand-accent-dark:#F3AE01;
  --color-brand-accent-light:#FDE057;
  --color-brand-light:      rgba(77, 96, 251, 0.12);

  --color-bg:             #050821;   /* KW Deep Space */
  --color-bg-subtle:      #0D0F31;   /* KW Midnight Navy */
  --color-bg-muted:       #111428;
  --color-bg-raised:      rgba(77, 96, 251, 0.08);
  --color-surface:        rgba(77, 96, 251, 0.08);
  --color-border:         rgba(77, 96, 251, 0.22);
  --color-border-subtle:  rgba(77, 96, 251, 0.10);
  --color-text:           #FFFFFF;
  --color-text-secondary: rgba(181, 188, 242, 0.82);
  --color-text-muted:     rgba(181, 188, 242, 0.64);  /* raised from 0.45 → 4.85:1 on #050821 (WCAG AA) */
  --color-text-inverse:   #050821;
  --color-link:           #A8B4F8;   /* Lighter blue for readable dark links */
  --color-link-hover:     #FDCA13;
  --color-inline-link:    #6678FE;   /* Inline prose links — dark mode (5.35:1 on #050821, passes all callout bgs) */

  /* Status / HTTP code colors — WCAG AA on --color-bg-raised and --color-bg-muted dark */
  --color-status-success: #4ade80;   /* 10.44:1 on bg-muted-dark */
  --color-status-warning: #fbbf24;   /* 10.90:1 on bg-muted-dark */
  --color-status-error:   #f87171;   /* 6.58:1 on bg-muted-dark */

  --shadow-xs:  0 1px 2px rgba(0,0,0,0.4);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 8px rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.3);
  --shadow-lg:  0 10px 30px rgba(0,0,0,0.60), 0 4px 8px rgba(0,0,0,0.40);
  --shadow-xl:  0 20px 50px rgba(0,0,0,0.70), 0 8px 16px rgba(0,0,0,0.50);

  --method-get:     #34D399;
  --method-post:    #818CF8;
  --method-put:     #FDCA13;
  --method-patch:   #FB923C;
  --method-delete:  #F87171;
  --method-get-bg:    rgba(52, 211, 153, 0.14);
  --method-post-bg:   rgba(129, 140, 248, 0.15);
  --method-put-bg:    rgba(253, 202, 19, 0.13);
  --method-patch-bg:  rgba(251, 146, 60, 0.13);
  --method-delete-bg: rgba(248, 113, 113, 0.13);
}

/* ============================================================
   3. CSS RESET + BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

img, svg { display: block; max-width: 100%; }
a { color: var(--color-link); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-link-hover); }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: var(--font-semibold); line-height: var(--leading-tight); color: var(--color-text); }
code, pre { font-family: var(--font-mono); }
input, textarea { font-family: inherit; }

:focus-visible {
  outline: 2px solid var(--color-brand-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-neutral-400); }

/* ============================================================
   4. LAYOUT PRIMITIVES
   ============================================================ */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout-body {
  display: flex;
  flex: 1;
  padding-top: var(--header-height);
}

.main-content {
  flex: 1;
  min-width: 0;
  padding: var(--space-8) var(--space-8);
  max-width: var(--content-max);
  margin-left: var(--sidebar-width);
  margin-right: auto;
}

.container {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ============================================================
   5. HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

[data-theme="dark"] .site-header {
  background-color: rgba(5, 8, 33, 0.92);
  border-bottom: 1px solid rgba(77, 96, 251, 0.10);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  width: 100%;
  padding: 0 var(--space-10);
}

/* Logo */
.header-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  opacity: 1;
  transition: opacity var(--transition-fast);
  z-index: 1;
  width: calc(var(--sidebar-width) - var(--space-10));
}

.header-logo:hover { opacity: 0.80; }

.header-logo-img {
  height: 30px;
  width: 143px;
  display: block;
  flex-shrink: 0;
}

[data-theme="dark"] .header-logo-img {
  filter: brightness(0) invert(1);
}

[data-theme="dark"] .header-logo-label {
  color: rgba(181, 188, 242, 0.64);  /* raised from 0.40 → matches --color-text-muted dark (WCAG AA) */
}

.header-logo-separator { display: none; }

.header-logo-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1;
  text-align: center;
  width: 143px;
}

/* Footer logo (legacy small box, kept for footer only) */
.logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-brand-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 11px;
  font-weight: var(--font-bold);
  flex-shrink: 0;
}

/* Primary nav — pill container, truly centered in header */
.header-nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 4px 5px;
  background: rgba(74, 86, 175, 0.07);
  border: 1px solid rgba(74, 86, 175, 0.16);
  border-radius: var(--radius-full);
}

[data-theme="dark"] .header-nav {
  background: rgba(13, 15, 49, 0.80);
  border-color: rgba(77, 96, 251, 0.32);
  box-shadow: inset 0 0 24px rgba(197, 185, 246, 0.04);
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 6px 18px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

/* Icons belong in the sidebar, not the header nav */
.header-nav .nav-link svg {
  display: none !important;
  width: 0;
  height: 0;
}

.nav-link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-muted);
}

.nav-link.active {
  color: var(--color-brand-primary);
  background-color: rgba(74, 86, 175, 0.12);
  border-color: rgba(74, 86, 175, 0.22);
}

[data-theme="dark"] .nav-link {
  color: rgba(200, 206, 248, 0.70);
}
[data-theme="dark"] .nav-link:hover {
  background: rgba(77, 96, 251, 0.14);
  border-color: rgba(77, 96, 251, 0.24);
  color: #FFFFFF;
}
[data-theme="dark"] .nav-link.active {
  background: rgba(74, 86, 175, 0.48);
  border-color: rgba(100, 120, 220, 0.50);
  color: #FFFFFF;
}

/* Header right */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  z-index: 1;
}

/* Search trigger */
.search-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 180px;
}

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

[data-theme="dark"] .search-trigger {
  background: rgba(77, 96, 251, 0.14);
  border-color: rgba(77, 96, 251, 0.38);
  color: rgba(181, 188, 242, 0.70);
}
[data-theme="dark"] .search-trigger:hover {
  background: rgba(77, 96, 251, 0.12);
  border-color: rgba(77, 96, 251, 0.42);
  color: #FFFFFF;
}

.search-trigger svg { flex-shrink: 0; }

.search-trigger-shortcut {
  margin-left: auto;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
}

/* Icon button */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: var(--color-text);
  background: var(--color-bg-muted);
  border-color: var(--color-border);
}

[data-theme="dark"] .icon-btn:hover {
  background: rgba(77, 96, 251, 0.12);
  border-color: rgba(77, 96, 251, 0.30);
  color: #FFFFFF;
}

/* CTA Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: white;
  background: var(--color-brand-primary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary:hover {
  background: #2E3B8C;
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .btn-primary {
  background: #4D60FB;
  border-color: rgba(77, 96, 251, 0.50);
}
[data-theme="dark"] .btn-primary:hover {
  background: #5A6DFF;
  box-shadow: 0 4px 16px rgba(77, 96, 251, 0.45);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-brand-primary);
  background: transparent;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-brand-primary);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-secondary:hover {
  background: var(--color-brand-light);
  color: var(--color-brand-primary);
  transform: translateY(-1px);
}

[data-theme="dark"] .btn-secondary {
  border-color: var(--color-brand-primary);
  color: var(--color-brand-primary);
}

[data-theme="dark"] .btn-secondary:hover {
  background: rgba(74, 144, 217, 0.15);
}

/* Mobile menu button */
.hamburger-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.hamburger-btn:hover {
  color: var(--color-text);
  background: var(--color-bg-muted);
}

/* Version badge — gold accent element */
.version-badge {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: #C28A00;
  background: rgba(243, 174, 1, 0.10);
  border: 1px solid rgba(243, 174, 1, 0.28);
  border-radius: var(--radius-full);
  padding: 2px 8px;
}

[data-theme="dark"] .version-badge {
  background: rgba(253, 202, 19, 0.10);
  border-color: rgba(253, 202, 19, 0.28);
  color: #FDCA13;
}

/* ============================================================
   6. SIDEBAR
   ============================================================ */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-bg);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 50;
  transition: transform var(--transition-slow), background-color var(--transition-slow);
  display: flex;
  flex-direction: column;
}

.sidebar-inner {
  padding: var(--space-4) 0;
  flex: 1;
}

[data-theme="dark"] .sidebar {
  background: #050821;
  border-right-color: rgba(77, 96, 251, 0.15);
}

/* Sidebar filter input */
.sidebar-filter-wrap {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-2);
}

.sidebar-filter {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.sidebar-filter:focus {
  border-color: var(--color-brand-accent);
  background: var(--color-bg);
  box-shadow: 0 0 0 3px rgba(74, 86, 175, 0.12);
}

[data-theme="dark"] .sidebar-filter {
  background: rgba(77, 96, 251, 0.06);
  border-color: rgba(77, 96, 251, 0.20);
  color: rgba(181, 188, 242, 0.85);
}
[data-theme="dark"] .sidebar-filter:focus {
  border-color: #4D60FB;
  background: rgba(77, 96, 251, 0.10);
  box-shadow: 0 0 0 3px rgba(77, 96, 251, 0.15);
}
[data-theme="dark"] .sidebar-filter::placeholder { color: rgba(181, 188, 242, 0.30); }

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

/* Section groups */
.sidebar-section {
  margin-bottom: var(--space-1);
}

.sidebar-section-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--transition-fast);
  background: none;
  border: none;
}

.sidebar-section-btn:hover { color: var(--color-text-secondary); }

.sidebar-chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.sidebar-section.collapsed .sidebar-chevron {
  transform: rotate(-90deg);
}

.sidebar-items {
  overflow: hidden;
  transition: max-height var(--transition-slow);
  max-height: 1000px;
}

.sidebar-section.collapsed .sidebar-items {
  max-height: 0;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  margin: 1px var(--space-2);
  width: calc(100% - var(--space-4));
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
  position: relative;
}

.sidebar-item::before {
  display: none;
}

.sidebar-item:hover {
  color: var(--color-text);
  background: var(--color-bg-muted);
}

.sidebar-item.active {
  color: var(--color-brand-primary);
  background: rgba(74, 86, 175, 0.10);
  border-color: rgba(74, 86, 175, 0.24);
  font-weight: var(--font-medium);
}

[data-theme="dark"] .sidebar-item {
  border-radius: var(--radius-md);
  margin: 1px var(--space-2);
  padding-left: var(--space-4);
  width: calc(100% - var(--space-4));
}
[data-theme="dark"] .sidebar-item.active {
  background: rgba(77, 96, 251, 0.16);
  border: 1px solid rgba(77, 96, 251, 0.30);
  box-shadow: inset 0 0 12px rgba(197, 185, 246, 0.08);
  color: #B5BCF2;
}
[data-theme="dark"] .sidebar-item.active::before {
  display: none;
}
[data-theme="dark"] .sidebar-item:hover {
  background: rgba(77, 96, 251, 0.09);
  color: #FFFFFF;
  border-radius: var(--radius-md);
}
[data-theme="dark"] .sidebar-section-btn:hover {
  color: rgba(181, 188, 242, 0.75);
}

.sidebar-item-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}

.sidebar-item.active .sidebar-item-icon { opacity: 1; }

/* Sidebar overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 40;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   7. HERO SECTION
   ============================================================ */
.hero {
  background: linear-gradient(135deg, #4A56AF 0%, #2E3B8C 55%, #1a2266 100%);
  color: white;
  padding: var(--space-20) var(--space-8);
  position: relative;
  overflow: hidden;
  margin: 0 calc(-1 * var(--space-8));
  margin-top: calc(-1 * var(--space-8));
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 65% 35%, rgba(107, 127, 219, 0.25) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 10% 90%, rgba(243, 174, 1, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* Gold diagonal accent stripe */
.hero::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -40px;
  width: 320px;
  height: 520px;
  background: linear-gradient(135deg, transparent 40%, rgba(243,174,1,0.06) 40%, rgba(243,174,1,0.04) 52%, transparent 52%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* ── Dark mode hero — KW Deep Space ─────────────────────────── */
[data-theme="dark"] .hero {
  background: #050821;
}
[data-theme="dark"] .hero::before {
  background:
    radial-gradient(ellipse 65% 70% at 70% 25%, rgba(77, 96, 251, 0.38) 0%, transparent 70%),
    radial-gradient(ellipse 45% 55% at 10% 85%, rgba(131, 82, 232, 0.22) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 90% 90%, rgba(77, 96, 251, 0.12) 0%, transparent 60%);
}
[data-theme="dark"] .hero::after {
  background: linear-gradient(135deg, transparent 40%, rgba(253,202,19,0.04) 40%, rgba(253,202,19,0.03) 52%, transparent 52%);
}
[data-theme="dark"] .hero-grid {
  background-image:
    linear-gradient(rgba(77,96,251,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,96,251,0.07) 1px, transparent 1px);
}
[data-theme="dark"] .hero-eyebrow {
  background: rgba(77, 96, 251, 0.14);
  border-color: rgba(77, 96, 251, 0.30);
}
[data-theme="dark"] .hero-stat-icon {
  background: rgba(77, 96, 251, 0.14);
  border: 1px solid rgba(77, 96, 251, 0.28);
  border-radius: var(--radius-md);
  box-shadow: inset 0 0 15px rgba(197, 185, 246, 0.08);
}
[data-theme="dark"] .hero-stats {
  border-top-color: rgba(77, 96, 251, 0.20);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--content-max);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  margin-bottom: var(--space-5);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  background: var(--color-brand-accent);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-heading {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: white;
  margin-bottom: var(--space-4);
  max-width: 640px;
  text-shadow: 0 0 50px rgba(255, 255, 255, 0.20), 0 0 100px rgba(255, 255, 255, 0.10);
}

[data-theme="dark"] .hero-heading {
  text-shadow: 0 0 40px rgba(77, 96, 251, 0.40), 0 0 80px rgba(77, 96, 251, 0.20), 0 0 130px rgba(131, 82, 232, 0.15);
}

.hero-heading .accent {
  color: #FDCA13; /* Signal gold — vibrant on both hero backgrounds */
}

.hero-description {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: rgba(255,255,255,0.8);
  max-width: 520px;
  margin-bottom: var(--space-8);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-brand-primary);
  background: white;
  border-radius: var(--radius-md);
  border: 2px solid white;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.hero-btn-primary:hover {
  background: rgba(255,255,255,0.92);
  color: var(--color-brand-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: white;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  border: 2px solid rgba(255,255,255,0.35);
  transition: all var(--transition-fast);
  text-decoration: none;
  backdrop-filter: blur(8px);
}

.hero-btn-secondary:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.6);
  color: white;
  transform: translateY(-2px);
}

/* Stats row */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.15);
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-6);
  position: relative;
}

.hero-stat:first-child { padding-left: 0; }

.hero-stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 32px;
  width: 1px;
  background: rgba(255,255,255,0.2);
}

.hero-stat-icon {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-stat-info {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-family: var(--font-mono-display);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: white;
  line-height: 1.2;
}

.hero-stat-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.65);
  white-space: nowrap;
}

/* ============================================================
   8. SECTION HEADERS
   ============================================================ */
.section-header {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

[data-theme="dark"] .section-header {
  border-bottom-color: rgba(77,96,251,0.20);
}
[data-theme="dark"] .section-eyebrow {
  color: #8890B2;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-brand-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.section-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ============================================================
   9. GUIDE CARDS GRID
   ============================================================ */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.guide-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto 1fr auto;
  column-gap: var(--space-3);
  row-gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.guide-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-brand-primary), var(--color-brand-secondary));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.guide-card:hover {
  border-color: var(--color-brand-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: inherit;
}

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

.guide-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  grid-column: 1;
  grid-row: 1;
  align-self: center;
  margin-bottom: 0;
  background: rgba(72, 92, 199, 0.09);
  border: 1px solid rgba(72, 92, 199, 0.20);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.55), 0 2px 8px rgba(72, 92, 199, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--color-brand-primary);
}

.guide-card-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  margin-bottom: 0;
}

.guide-card-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  grid-column: 1 / -1;
  grid-row: 2;
  margin-bottom: 0;
}

.guide-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  grid-column: 1 / -1;
  grid-row: 3;
}

.guide-card-tag {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  background: var(--color-bg-muted);
  border-radius: var(--radius-full);
  padding: 2px 8px;
}

.guide-card-arrow {
  color: var(--color-brand-secondary);
  transition: transform var(--transition-fast);
}

.guide-card:hover .guide-card-arrow {
  transform: translateX(4px);
}

/* Guide card icon dark mode — unified glass orb */
[data-theme="dark"] .guide-card-icon {
  background: rgba(77, 96, 251, 0.13);
  border-color: rgba(77, 96, 251, 0.28);
  box-shadow: inset 0 0 15px rgba(197, 185, 246, 0.08), 0 2px 8px rgba(77, 96, 251, 0.10);
  color: var(--color-brand-accent);
}


[data-theme="dark"] .guide-card {
  background: rgba(77, 96, 251, 0.05);
  border-color: rgba(77, 96, 251, 0.16);
}
[data-theme="dark"] .guide-card:hover {
  border-color: rgba(77, 96, 251, 0.42);
  box-shadow: 0 8px 32px rgba(0,0,0,0.40), inset 0 0 40px rgba(197,185,246,0.07);
}
[data-theme="dark"] .guide-card::before {
  background: linear-gradient(90deg, #4D60FB, #818CF8);
}
[data-theme="dark"] .guide-card-tag {
  background: rgba(77, 96, 251, 0.12);
  color: rgba(181, 188, 242, 0.70);
}
[data-theme="dark"] .guide-card-arrow { color: var(--color-link); }  /* was #4D60FB → 3.98:1; #A8B4F8 → 9.58:1 on card-bg-dark */

/* ============================================================
   10. HTTP METHOD BADGES
   ============================================================ */
.method-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  padding: 3px 8px;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  flex-shrink: 0;
}

.method-badge.GET    { color: var(--method-get);    background: var(--method-get-bg); }
.method-badge.POST   { color: var(--method-post);   background: var(--method-post-bg); }
.method-badge.PUT    { color: var(--method-put);    background: var(--method-put-bg); }
.method-badge.PATCH  { color: var(--method-patch);  background: var(--method-patch-bg); }
.method-badge.DELETE { color: var(--method-delete); background: var(--method-delete-bg); }

/* ============================================================
   11. API PREVIEW TABLE
   ============================================================ */
.api-preview-section {
  margin-bottom: var(--space-12);
}

.api-preview-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.api-preview-table th {
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.api-preview-table td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: middle;
}

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

.api-preview-table tr {
  transition: background-color var(--transition-fast);
}

.api-preview-table tbody tr:hover {
  background: var(--color-bg-subtle);
}

.endpoint-path {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: var(--font-medium);
}

.endpoint-description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.api-preview-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  margin-top: var(--space-4);
}

/* ============================================================
   12. CODE BLOCKS + TABS
   ============================================================ */
.code-example-section {
  margin-bottom: var(--space-12);
}

.code-block-wrapper {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-raised);
  margin-bottom: 10px;
}

.code-tabs-header {
  display: flex;
  align-items: center;
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-4);
  gap: 0;
  overflow-x: auto;
}

.code-tab {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  margin-bottom: -1px;
}

.code-tab:hover {
  color: var(--color-text-secondary);
}

.code-tab.active {
  color: var(--color-brand-primary);
  border-bottom-color: var(--color-brand-primary);
}

[data-theme="dark"] .code-tab.active {
  color: var(--color-brand-accent);
  border-bottom-color: var(--color-brand-accent);
}

.code-tab-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.code-panels {
  position: relative;
}

.code-panel {
  display: none;
}

.code-panel.active {
  display: block;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: #0D0F31;
  border-bottom: 1px solid rgba(77,96,251,0.18);
}
[data-theme="dark"] .code-block-wrapper {
  background: #080A28;
  border-color: rgba(77,96,251,0.20);
}
[data-theme="dark"] .code-tabs-header {
  background: #0D0F31;
  border-bottom-color: rgba(77,96,251,0.18);
}

.code-filename {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: rgba(255,255,255,0.5);
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.12);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.14);
}

.copy-btn.copied {
  color: var(--method-get);
  border-color: var(--method-get);
  background: rgba(42, 157, 143, 0.1);
}

pre.code-content {
  margin: 0;
  padding: var(--space-5) var(--space-5);
  overflow-x: auto;
  background: #080A28;
  font-size: var(--text-sm);
  line-height: 1.7;
  max-height: 420px;
}

pre.code-content code {
  background: none;
  padding: 0;
  font-size: inherit;
  line-height: inherit;
}

/* ============================================================
   13. SDK CARDS
   ============================================================ */
.sdk-section {
  margin-bottom: var(--space-12);
}

.sdk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}

.sdk-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-4);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
  cursor: pointer;
}

.sdk-card:hover {
  border-color: var(--color-brand-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: inherit;
}

.sdk-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
}

.sdk-name {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

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

.sdk-badge {
  font-size: var(--text-xs);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: var(--font-medium);
}

.sdk-badge.stable {
  color: var(--method-get);
  background: var(--method-get-bg);
}

.sdk-badge.beta {
  color: var(--method-put);
  background: var(--method-put-bg);
}

/* ============================================================
   14. CHANGELOG TIMELINE
   ============================================================ */
.changelog-section {
  margin-bottom: var(--space-12);
}

.changelog-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.changelog-list::before {
  content: '';
  position: absolute;
  left: 60px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}

.changelog-entry {
  display: flex;
  gap: var(--space-5);
  padding-bottom: var(--space-6);
  position: relative;
}

.changelog-date-col {
  width: 60px;
  flex-shrink: 0;
  text-align: right;
  padding-top: 2px;
}

.changelog-date-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.changelog-dot {
  position: absolute;
  left: 56px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: var(--radius-full);
  background: var(--color-brand-accent);
  border: 2px solid var(--color-bg);
  z-index: 1;
}

.changelog-content {
  flex: 1;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-left: var(--space-4);
}

.changelog-version {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.changelog-version-label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-brand-primary);
}

[data-theme="dark"] .changelog-version-label {
  color: var(--color-brand-light-var);
}

.changelog-tag {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.changelog-tag.new     { color: var(--method-get);    background: var(--method-get-bg); }
.changelog-tag.improved { color: var(--method-post);  background: var(--method-post-bg); }
.changelog-tag.fix     { color: var(--method-patch);  background: var(--method-patch-bg); }

.changelog-heading {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.changelog-body {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.changelog-items {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.changelog-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.changelog-item::before {
  content: '→';
  color: var(--color-brand-secondary);
  flex-shrink: 0;
  font-size: var(--text-xs);
  margin-top: 2px;
}

/* ============================================================
   15. SEARCH MODAL
   ============================================================ */
.search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.search-overlay.open {
  display: flex;
  animation: overlayFadeIn 150ms ease forwards;
}

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

.search-modal {
  width: 100%;
  max-width: 640px;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  animation: modalSlideIn 200ms cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

[data-theme="dark"] .search-modal {
  background: #0D0F31;
  border-color: rgba(77, 96, 251, 0.30);
  box-shadow: 0 20px 60px rgba(0,0,0,0.70), inset 0 0 40px rgba(77,96,251,0.05);
}
[data-theme="dark"] .search-footer {
  background: #080A28;
  border-top-color: rgba(77,96,251,0.18);
}

@keyframes modalSlideIn {
  from { transform: translateY(-20px) scale(0.97); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.search-input-icon {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

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

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

.search-close {
  display: flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-close:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.search-results {
  max-height: 400px;
  overflow-y: auto;
}

.search-results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-10) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.search-results-group {
  padding: var(--space-2) 0;
}

.search-results-group-label {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-muted);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  text-decoration: none;
  color: inherit;
}

.search-result-item:hover,
.search-result-item.focused {
  background: var(--color-bg-subtle);
}

.search-result-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--color-bg-muted);
  color: var(--color-text-secondary);
}

.search-result-text { flex: 1; min-width: 0; }

.search-result-title {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}

.search-result-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}

.search-result-badge {
  flex-shrink: 0;
}

.search-footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
}

.search-footer-hint {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.search-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 6px;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  line-height: 1.4;
}

/* ============================================================
   16. BREADCRUMB
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover { color: var(--color-text-secondary); }

.breadcrumb-sep {
  color: var(--color-text-muted);  /* was --color-border (border token ≠ text token; failed contrast in both modes) */
  font-size: var(--text-xs);
}

.breadcrumb-current {
  color: var(--color-text-secondary);
  font-weight: var(--font-medium);
}

/* ============================================================
   17. CONTENT PROSE STYLES
   ============================================================ */
.prose h1 { font-size: var(--text-3xl); margin-bottom: var(--space-4); }
.prose h2 { font-size: var(--text-2xl); margin-bottom: var(--space-3); margin-top: var(--space-8); }
.prose h3 { font-size: var(--text-xl); margin-bottom: var(--space-3); margin-top: var(--space-6); }
.prose p  { margin-bottom: var(--space-4); color: var(--color-text-secondary); line-height: var(--leading-relaxed); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  color: var(--color-brand-secondary);
}

[data-theme="dark"] .prose code {
  background: rgba(77,96,251,0.10);
  border-color: rgba(77,96,251,0.22);
  color: #818CF8;
}
[data-theme="dark"] .doc-table code {
  background: rgba(77,96,251,0.10);
  border-color: rgba(77,96,251,0.22);
  color: #818CF8;
}
[data-theme="dark"] .doc-table th {
  background: #0D0F31;
}
[data-theme="dark"] .doc-table tr:hover td {
  background: rgba(77,96,251,0.06);
}
[data-theme="dark"] .toc-list {
  border-color: rgba(77,96,251,0.18);
}
[data-theme="dark"] .toc-link.active {
  color: #B5BCF2;
  border-left-color: rgba(77, 96, 251, 0.60);
}
[data-theme="dark"] .doc-h2 {
  border-top-color: rgba(77,96,251,0.25);
}

/* ============================================================
   18. CALLOUT / ALERT BOXES
   ============================================================ */
.callout {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border-left: 3px solid;
  margin-bottom: var(--space-4);
}

.callout-info    { background: rgba(69, 123, 157, 0.08); border-color: var(--method-post); }
.callout-success { background: rgba(42, 157, 143, 0.08); border-color: var(--method-get); }
.callout-warning { background: rgba(233, 196, 106, 0.12); border-color: var(--method-put); }
.callout-danger  { background: rgba(230, 57, 70, 0.08); border-color: var(--method-delete); }

[data-theme="dark"] .callout-info    { background: rgba(77, 96, 251, 0.10); border-color: #4D60FB; }
[data-theme="dark"] .callout-success { background: rgba(52, 211, 153, 0.10); border-color: #34D399; }
[data-theme="dark"] .callout-warning { background: rgba(253, 202, 19, 0.10); border-color: #FDCA13; }
[data-theme="dark"] .callout-danger  { background: rgba(248, 113, 113, 0.10); border-color: #F87171; }

.callout-icon { flex-shrink: 0; margin-top: 2px; }
.callout-body { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: var(--leading-relaxed); }

/* ============================================================
   19. FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) var(--space-6) var(--space-8) calc(var(--sidebar-width) + var(--space-6));
  margin-top: auto;
}

.footer-inner {
  max-width: var(--page-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-brand-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.footer-links {
  display: flex;
  gap: var(--space-5);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover { color: var(--color-text-secondary); }

[data-theme="dark"] .site-footer {
  background: #050821;
  border-top-color: rgba(77, 96, 251, 0.15);
}

/* Footer wordmark — all-black in light mode, all-white in dark mode */
.footer-kw-logo {
  height: 22px;
  width: auto;
  filter: brightness(0);
  opacity: 0.6;
}
[data-theme="dark"] .footer-kw-logo {
  filter: brightness(0) invert(1);
  opacity: 0.75;
}

/* ============================================================
   20. RESPONSIVE BREAKPOINTS
   ============================================================ */

/* ---- 1024px: Hide TOC, sidebar stays ---- */
@media (max-width: 1024px) {
  .main-content {
    padding: var(--space-6) var(--space-6);
  }
}

/* ---- 768px: Sidebar becomes slide-in drawer ---- */
@media (max-width: 768px) {
  :root {
    --header-height: 100px;
  }

  .sidebar {
    transform: translateX(-100%);
    z-index: 60;
    box-shadow: var(--shadow-xl);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: block;
  }

  .site-header {
    height: var(--header-height);
  }

  .header-inner {
    height: 64px;
    padding: 0 var(--space-4);
  }

  .hamburger-btn {
    display: flex;
    min-width: 44px;
    min-height: 44px;
  }

  .header-nav {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    transform: none;
    justify-content: flex-start;
    gap: 4px;
    padding: 0 var(--space-4) 10px;
    background: transparent;
    border: none;
    border-radius: 0;
  }

  .icon-btn {
    min-width: 44px;
    min-height: 44px;
  }

  .sidebar-section-btn {
    min-height: 44px;
  }

  .copy-btn {
    min-height: 44px;
    padding: var(--space-3) var(--space-4);
  }

  .search-trigger-shortcut { display: none; }

  .search-trigger {
    min-width: 0;
    width: 44px;
    height: 44px;
    padding: 0;
    justify-content: center;
    gap: 0;
    overflow: hidden;
    flex-shrink: 0;
    transition: width var(--transition-slow), background-color var(--transition-fast), border-color var(--transition-fast);
  }

  .search-trigger span { display: none; }

  .header-logo {
    transition: opacity var(--transition-fast), transform var(--transition-fast), max-width var(--transition-slow), margin var(--transition-slow);
  }

  .header-inner.search-expanded .header-logo {
    opacity: 0;
    transform: scale(0.92);
    max-width: 0;
    margin: 0;
    pointer-events: none;
  }

  .header-inner.search-expanded .search-trigger {
    width: 100%;
    justify-content: flex-start;
    padding: 0 var(--space-3);
  }

  .header-inner.search-expanded .search-trigger span {
    display: inline;
  }

  .header-inner.search-expanded #themeToggle {
    display: none;
  }

  .hero {
    padding: var(--space-12) var(--space-6);
  }

  .hero-stats {
    gap: var(--space-4);
    flex-direction: column;
    align-items: flex-start;
    padding-top: var(--space-6);
  }

  .hero-stat:not(:last-child)::after { display: none; }
  .hero-stat { padding: 0; }

  .main-content {
    margin-left: 0;
    padding: var(--space-4) var(--space-4);
  }

  .guide-grid {
    grid-template-columns: 1fr;
  }

  .sdk-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .changelog-list::before { display: none; }

  .changelog-date-col {
    display: none;
  }

  .changelog-dot { display: none; }

  .changelog-content {
    margin-left: 0;
  }

  .changelog-entry {
    flex-direction: column;
    gap: var(--space-2);
  }

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

/* ---- 480px: Single column, stacked hero ---- */
@media (max-width: 480px) {
  .hero-heading { font-size: var(--text-2xl); }
  .hero-description { font-size: var(--text-base); }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-btn-primary,
  .hero-btn-secondary {
    justify-content: center;
  }

  .sdk-grid {
    grid-template-columns: 1fr;
  }

  .search-overlay { padding-top: 20px; padding-left: var(--space-3); padding-right: var(--space-3); }

  .api-preview-table { font-size: var(--text-xs); }
  .api-preview-table th,
  .api-preview-table td { padding: var(--space-2) var(--space-2); }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   21. UTILITY CLASSES
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-center { text-align: center; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.mt-auto      { margin-top: auto; }
.mb-8         { margin-bottom: var(--space-8); }
.gap-2        { gap: var(--space-2); }
.hidden       { display: none !important; }

/* ============================================================
   22. DOC PAGE LAYOUT (authentication.html and future guide pages)
   ============================================================ */

/* Inline endpoint method pill — used in guide pages */
.ep-pill {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5);
  margin: var(--space-2) 0 var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.ep-pill code {
  overflow-wrap: anywhere;
  min-width: 0;
}

/* Two-column: article + sticky TOC */
.doc-layout {
  display: flex;
  gap: var(--space-10);
  align-items: flex-start;
  justify-content: space-between;   /* pushes TOC to right edge */
  max-width: var(--page-max);       /* was 1100px — use the 1440px page-cap token */
  margin-right: auto;               /* centers container on ultra-wide screens */
  padding: var(--space-8) var(--space-8);
}

.doc-article {
  flex: 1;
  min-width: 0;
  max-width: 820px;   /* caps prose width; freed space becomes the gap before the TOC */
}

.doc-toc-wrap {
  width: 220px;
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
  max-height: calc(100vh - var(--header-height) - var(--space-12));
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.doc-toc-wrap::-webkit-scrollbar { width: 3px; }
.doc-toc-wrap::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }

/* Copy for AI button (guide pages, below .doc-title) */
.doc-copy-ai-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-4);
  padding: 5px 12px;
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast),
              background var(--transition-fast), transform var(--transition-fast);
  position: relative;
}
.doc-copy-ai-btn:hover {
  color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  background: var(--color-brand-light);
  transform: translateY(-1px);
}
.doc-copy-ai-btn.copied {
  color: #0D7A57;
  border-color: #0D7A57;
  background: transparent;
}
[data-theme="dark"] .doc-copy-ai-btn {
  color: var(--color-text-muted);
  border-color: var(--color-text-muted);
}
[data-theme="dark"] .doc-copy-ai-btn:hover {
  color: #7080FF;
  border-color: #7080FF;
  background: rgba(112, 128, 255, 0.12);
}
[data-theme="dark"] .doc-copy-ai-btn.copied {
  color: var(--method-get);
  border-color: var(--method-get);
}

/* Tooltip */
.doc-copy-ai-btn[data-tooltip]::before,
.doc-copy-ai-btn[data-tooltip]::after {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  transform: translateY(-4px);
}
.doc-copy-ai-btn[data-tooltip]::before {
  content: attr(data-tooltip);
  display: block;
  width: 260px;
  padding: 8px 10px;
  background: var(--color-neutral-800);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 400;
  line-height: 1.5;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0,0,0,0.18);
  white-space: normal;
  text-align: left;
}
.doc-copy-ai-btn[data-tooltip]::after {
  content: '';
  border: 5px solid transparent;
  border-bottom-color: var(--color-neutral-800);
  top: calc(100% + 3px);
  left: 14px;
}
.doc-copy-ai-btn[data-tooltip]:hover::before,
.doc-copy-ai-btn[data-tooltip]:hover::after,
.doc-copy-ai-btn[data-tooltip]:focus-visible::before,
.doc-copy-ai-btn[data-tooltip]:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}
[data-theme="dark"] .doc-copy-ai-btn[data-tooltip]::before {
  background: var(--color-neutral-700);
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}
[data-theme="dark"] .doc-copy-ai-btn[data-tooltip]::after {
  border-bottom-color: var(--color-neutral-700);
}

/* Page intro */
.doc-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  background: var(--color-brand-light);
  border-radius: 20px;
  padding: 3px 12px;
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
}

[data-theme="dark"] .doc-eyebrow {
  color: rgba(181, 188, 242, 0.85);
  background: rgba(77, 96, 251, 0.12);
}

.doc-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.doc-lead {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 640px;
  margin-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-8);
}

/* Section headings */
.doc-h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
  padding-top: var(--space-2);
  border-top: 2px solid var(--color-brand-primary);
  display: inline-block;
}

.doc-h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.doc-p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

/* Numbered step list */
.doc-steps {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0;
  counter-reset: steps;
}

.doc-step {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  counter-increment: steps;
}

.doc-step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-brand-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.doc-step-num::before { content: counter(steps); }

.doc-step-body { flex: 1; min-width: 0; }

.doc-step-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.doc-step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Parameter / field table */
.doc-table-wrap { overflow-x: auto; margin: var(--space-6) 0; }

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

.doc-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-4);
  border-bottom: 2px solid var(--color-border);
  background: var(--color-bg-subtle);
}

.doc-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-secondary);
  vertical-align: top;
}

.doc-table tr:last-child td { border-bottom: none; }
.doc-table tr:hover td { background: var(--color-bg-subtle); }

.doc-table code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  color: var(--color-brand-secondary);
  white-space: nowrap;
}

.doc-table .field-req {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: #B84A4A;  /* darkened from #C45252 → 5.08:1 on white (WCAG AA) */
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

[data-theme="dark"] .doc-table .field-req {
  color: #F47171;  /* 7.00:1 on #050821 (WCAG AAA) */
}

/* TOC sidebar */
.toc-heading {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 1px solid var(--color-border);
}

.toc-item { padding: 0; }

.toc-link {
  display: block;
  padding: 4px 0 4px var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  border-left: 2px solid transparent;
  margin-left: -1px;
  line-height: 1.4;
}

.toc-link:hover { color: var(--color-text-secondary); }
.toc-link.active { color: var(--color-brand-primary); border-left-color: var(--color-brand-primary); font-weight: 500; }

.toc-item-h3 .toc-link { padding-left: calc(var(--space-3) + var(--space-4)); font-size: var(--text-xs); }

/* Flow diagram boxes */
.flow-diagram {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  margin: var(--space-6) 0;
  padding: var(--space-6);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

[data-theme="dark"] .flow-diagram {
  background: rgba(77,96,251,0.05);
  border-color: rgba(77,96,251,0.15);
}
[data-theme="dark"] .flow-box {
  background: rgba(77,96,251,0.08);
  border-color: rgba(77,96,251,0.22);
  color: rgba(181,188,242,0.85);
}
[data-theme="dark"] .flow-box-primary {
  border-color: #4D60FB;
  background: rgba(77,96,251,0.18);
  color: #818CF8;
}

.flow-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  min-width: 100px;
  text-align: center;
  box-shadow: var(--shadow-xs);
}

.flow-box-primary {
  border-color: var(--color-brand-primary);
  background: var(--color-brand-light);
  color: var(--color-brand-primary);
}

.flow-arrow {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  padding: 0 var(--space-2);
  flex-shrink: 0;
}

.flow-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
  font-weight: 400;
}

.doc-list {
  margin-bottom: 10px;
}

.doc-list li {
  margin-bottom: 10px;
}

.doc-checks {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0;
}

.doc-check {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.doc-check-bullet {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-brand-subtle);
  color: var(--color-brand-primary);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.doc-check-bullet::before { content: "•"; }

/* Responsive: collapse TOC on narrow screens */
@media (max-width: 960px) {
  .doc-layout { flex-direction: column; align-items: stretch; gap: var(--space-6); padding: var(--space-6) var(--space-4); }
  .doc-article { max-width: none; }
  .doc-toc-wrap { width: 100%; position: static; max-height: none; display: none; }
  .doc-title { font-size: var(--text-3xl); }
}

@media (max-width: 768px) {
  .doc-layout {
    padding: var(--space-5) var(--space-4);
    gap: var(--space-4);
  }

  .doc-title {
    font-size: var(--text-2xl);
  }

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

  pre.code-content {
    padding: var(--space-3) var(--space-4);
  }

  .doc-article code {
    overflow-wrap: anywhere;
  }
}

@media (max-width: 480px) {
  .doc-title { font-size: var(--text-xl); }
}

/* ============================================================
   AMBIENT DARK MODE GLOW — prevents the "dark void" feeling
   Fixed attachment keeps glows in place as user scrolls.
   ============================================================ */

/* Two large diffuse orbs baked into the body background */
[data-theme="dark"] body {
  background-image:
    radial-gradient(ellipse 900px 750px at 85% -5%,  rgba(77, 96, 251, 0.18) 0%, transparent 62%),
    radial-gradient(ellipse 700px 600px at 10% 100%, rgba(131, 82, 232, 0.12) 0%, transparent 62%);
  background-attachment: fixed;
}

/* Sidebar — translucent glass so ambient bleeds through */
[data-theme="dark"] .sidebar {
  background: rgba(5, 8, 33, 0.68) !important;
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
}

/* A third mid-right orb in the content area */
[data-theme="dark"] .layout-body::after {
  content: '';
  position: fixed;
  top: 30%;
  right: 8%;
  width: 560px;
  height: 480px;
  background: radial-gradient(ellipse at 55% 45%, rgba(77, 96, 251, 0.10) 0%, transparent 68%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

/* Very faint KW grid on the content canvas */
[data-theme="dark"] .main-content {
  background-image:
    linear-gradient(rgba(77, 96, 251, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 96, 251, 0.035) 1px, transparent 1px);
  background-size: 60px 60px;
  background-attachment: local;
}

/* Ensure fixed glow doesn't clip inside the hero — hero overrides */
[data-theme="dark"] .hero {
  isolation: isolate;
}

/* ═══════════════════════════════════════════════
   Innovators in AI — promo banner
   Inserted on MCP Overview and Installation pages
═══════════════════════════════════════════════ */

.iai-promo-banner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(135deg, rgba(74,86,175,0.07) 0%, rgba(74,86,175,0.02) 100%);
  border: 1px solid rgba(74,86,175,0.18);
  border-radius: var(--radius-lg);
  margin: var(--space-6) 0 var(--space-8);
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.iai-promo-banner:hover {
  background: linear-gradient(135deg, rgba(74,86,175,0.12) 0%, rgba(74,86,175,0.05) 100%);
  border-color: rgba(74,86,175,0.3);
}
[data-theme="dark"] .iai-promo-banner {
  background: linear-gradient(135deg, rgba(77,96,251,0.10) 0%, rgba(77,96,251,0.03) 100%);
  border-color: rgba(77,96,251,0.22);
}
[data-theme="dark"] .iai-promo-banner:hover {
  background: linear-gradient(135deg, rgba(77,96,251,0.16) 0%, rgba(77,96,251,0.07) 100%);
  border-color: rgba(77,96,251,0.38);
}

.iai-promo-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.iai-promo-body { flex: 1; min-width: 0; }

.iai-promo-heading {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 2px;
  line-height: 1.4;
}

.iai-promo-highlight {
  font-weight: 800;
  color: var(--color-brand-primary);
}
[data-theme="dark"] .iai-promo-highlight {
  color: #7B88E8;
}

.iai-promo-sub {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

.iai-promo-cta {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-brand-primary);
  white-space: nowrap;
}
[data-theme="dark"] .iai-promo-cta { color: #7B88E8; }

@media (max-width: 768px) {
  .iai-promo-banner { padding: var(--space-4); gap: var(--space-3); flex-wrap: wrap; }
  .iai-promo-icon { width: 40px; height: 40px; }
  .iai-promo-cta { display: none; }
}

/* ============================================================
   23. IMAGE LIGHTBOX
   ============================================================ */
.img-lightbox-trigger {
  cursor: zoom-in;
  display: block;
  transition: opacity var(--transition-fast);
}
.img-lightbox-trigger:hover { opacity: 0.9; }

#imgLightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
}
#imgLightbox.open { display: flex; }

.img-lightbox-img {
  width: 100vw;
  max-height: calc(100vh - 64px);
  object-fit: contain;
  display: block;
}

.img-lightbox-close {
  position: fixed;
  top: var(--space-4);
  right: var(--space-5);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-fast);
  z-index: 9001;
}
.img-lightbox-close:hover { background: rgba(255, 255, 255, 0.28); }