/* ==========================================================================
   MAITHILI DIGITAL COMMONS - Core Design System & Tokens
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+Devanagari:wght@400;500;600;700;800&family=Noto+Sans+Tirhuta&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  /* Cultural & Brand Color Palette */
  --color-terracotta: #D64527;
  --color-terracotta-dark: #A82E16;
  --color-terracotta-light: #FCECE8;
  
  --color-indigo: #1A2B49;
  --color-indigo-dark: #0F1B2F;
  --color-indigo-light: #EBF1FA;

  --color-gold: #D98218;
  --color-gold-light: #FEF6E9;
  --color-gold-bright: #F59E0B;

  --color-emerald: #10B981;
  --color-emerald-light: #ECFDF5;

  /* Surfaces & Backgrounds */
  --bg-parchment: #FAF7F2;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #FFFFFF;
  --bg-surface-subtle: #F3EFEA;

  /* Text & Ink */
  --text-primary: #18202F;
  --text-secondary: #4B5563;
  --text-tertiary: #9CA3AF;
  --text-inverted: #FFFFFF;

  /* Borders & Dividers */
  --border-subtle: #E8E2D9;
  --border-medium: #D1C7BA;
  --border-focus: #D64527;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(26, 43, 73, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(26, 43, 73, 0.08), 0 1px 2px -1px rgba(26, 43, 73, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(26, 43, 73, 0.07), 0 2px 4px -2px rgba(26, 43, 73, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(26, 43, 73, 0.08), 0 4px 6px -4px rgba(26, 43, 73, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(26, 43, 73, 0.1), 0 8px 10px -6px rgba(26, 43, 73, 0.06);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-devanagari: 'Noto Sans Devanagari', 'Inter', system-ui, sans-serif;
  --font-tirhuta: 'Noto Sans Tirhuta', sans-serif;
  --font-display: 'Outfit', 'Noto Sans Devanagari', system-ui, sans-serif;

  /* Layout */
  --container-max-width: 1240px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-parchment: #0E1522;
  --bg-surface: #152033;
  --bg-surface-elevated: #1B2942;
  --bg-surface-subtle: #1E2E48;

  --text-primary: #F3F4F6;
  --text-secondary: #9CA3AF;
  --text-tertiary: #6B7280;

  --border-subtle: #253755;
  --border-medium: #374E75;

  --color-terracotta-light: rgba(214, 69, 39, 0.15);
  --color-indigo-light: rgba(26, 43, 73, 0.3);
  --color-gold-light: rgba(217, 130, 24, 0.15);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-parchment);
  color: var(--text-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

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

/* Devanagari Enhancement Classes */
.lang-mai, .devanagari-text {
  font-family: var(--font-devanagari);
  line-height: 1.7;
}

/* Grid & Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.section-sm {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3.5rem;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.825rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background-color: var(--color-terracotta-light);
  color: var(--color-terracotta);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--color-terracotta);
  outline-offset: 2px;
}

/* Responsive Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .grid-cols-4, .grid-cols-3, .grid-cols-2 { grid-template-columns: 1fr; }
  .section { padding-top: 3.5rem; padding-bottom: 3.5rem; }
  .section-title { font-size: 1.85rem; }
}