/* ==========================================================================
   Necron Design System — Shared Styles
   Adapted from the marketing site for docs consistency.
   Phase 2: Production-quality theming, header, footer, global components.
   ========================================================================== */

/* ---------- Custom Properties (Light Theme) ---------- */
:root {
  /* Brand Palette */
  --color-primary: #0078d4;
  --color-primary-dark: #0063b1;
  --color-primary-light: #2b99ff;
  --color-primary-hover: #005a9e;
  --gradient-brand: linear-gradient(135deg, #0063b1, #0078d4, #2b99ff);

  /* Typography */
  --font-family: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'SF Mono',
    Consolas, 'Liberation Mono', Menlo, monospace;

  /* Core Colors */
  --color-text: #111111;
  --color-text-secondary: #555555;
  --color-text-muted: #888888;
  --color-bg: #ffffff;
  --color-bg-light: #f5f6f7;
  --color-bg-subtle: #f9fafb;
  --color-border: #d0d0d0;
  --color-border-light: #e5e7eb;

  /* Layout Dimensions */
  --header-height: 60px;
  --sidebar-width: 280px;
  --toc-width: 220px;
  --content-max-width: 780px;

  /* Radius */
  --radius-xs: 3px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.08), 0 16px 48px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 0.12s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* Focus ring */
  --focus-ring: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-primary);
}

/* ---------- Dark Theme ---------- */
[data-theme='dark'] {
  --color-text: #e0e0e0;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #707070;
  --color-bg: #1a1a1a;
  --color-bg-light: #242424;
  --color-bg-subtle: #1e1e1e;
  --color-border: #3e3e3e;
  --color-border-light: #333333;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2), 0 1px 3px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.2), 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.25), 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.3), 0 16px 48px rgba(0, 0, 0, 0.4);

  --focus-ring: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-primary-light);
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  text-decoration: underline;
}

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

/* Selection */
::selection {
  background: color-mix(in srgb, var(--color-primary) 25%, transparent);
  color: var(--color-text);
}

/* Focus visible */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

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

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

[data-theme='dark'] ::-webkit-scrollbar-thumb {
  background: #444;
}

[data-theme='dark'] ::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Slight transparency for frosted glass effect */
@supports (backdrop-filter: blur(8px)) {
  .site-header {
    background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  }
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 100%;
  gap: 24px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.header-logo:hover {
  text-decoration: none;
  opacity: 0.85;
}

.header-logo img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.header-logo-text {
  letter-spacing: -0.01em;
}

.header-nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
}

.header-nav a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 4px 2px;
  transition: color var(--transition-fast);
  position: relative;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--color-primary);
  text-decoration: none;
}

.header-nav a.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  background: var(--color-bg-subtle);
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* ---------- Buttons (Reset) ---------- */
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  color: inherit;
}

/* ---------- Search Trigger ---------- */
.search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  background: var(--color-bg-light);
  transition: border-color var(--transition-fast), background-color var(--transition-fast),
    box-shadow var(--transition-fast);
  min-width: 40px;
  justify-content: center;
}

.search-trigger:hover {
  border-color: var(--color-primary);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.search-shortcut {
  font-size: 0.7rem;
  padding: 2px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background: var(--color-bg);
  font-family: var(--font-mono);
  line-height: 1;
  color: var(--color-text-muted);
}

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

@media (min-width: 768px) {
  .search-trigger {
    min-width: auto;
    justify-content: flex-start;
  }
  .search-trigger-text {
    display: inline;
  }
}

/* ---------- Theme Toggle ---------- */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast),
    transform var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-bg-light);
  color: var(--color-text);
  transform: rotate(15deg);
}

[data-theme='light'] .icon-moon {
  display: none;
}

[data-theme='dark'] .icon-sun {
  display: none;
}

/* ---------- Sidebar Toggle (Mobile Only) ---------- */
.sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-toggle:hover {
  background: var(--color-bg-light);
  color: var(--color-text);
}

@media (min-width: 1024px) {
  .sidebar-toggle {
    display: none;
  }
}

/* ---------- Utility: visually-hidden ---------- */
.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;
}

/* ---------- Print ---------- */
@media print {
  .site-header,
  .site-footer,
  .sidebar-toggle,
  .search-trigger,
  .theme-toggle,
  .docs-sidebar,
  .docs-toc,
  .toc-mobile,
  .prev-next,
  .search-modal {
    display: none !important;
  }

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

  .docs-layout {
    display: block !important;
  }

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

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

  .doc-content a[href^="http"]::after {
    content: ' (' attr(href) ')';
  }

  .doc-content a[href^="/"]::after,
  .doc-content a[href^="#"]::after {
    content: '';
  }
}