@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Official VLE UNION ODISHA Brand Colors */
  --vuo-navy: #01257D;
  --vuo-green: #009B4D;
  --vuo-yellow: #FFCC00;
  --vuo-ivory: #FAF5E9;
  --vuo-pale-blue: #EFFAFD;
  --vuo-royal-blue: #4A8BDF;
  --vuo-electric-blue: #00FFFF;
  --vuo-eggplant: #A0006D;

  /* Color Palette - Brand Hex */
  --primary-hex: var(--vuo-navy);
  --secondary-hex: var(--vuo-royal-blue);
  --success-hex: var(--vuo-green);
  --warning-hex: var(--vuo-yellow);
  --danger-hex: #ef4444;
  --info-hex: var(--vuo-royal-blue);

  /* HSL Values (for opacity styling) */
  --primary-hsl: 222, 98%, 25%;
  --secondary-hsl: 219, 72%, 58%;
  --success-hsl: 150, 100%, 30%;
  --warning-hsl: 48, 100%, 50%;
  --danger-hsl: 0, 84%, 60%;
  --info-hsl: 219, 72%, 58%;

  /* CSS Variable Mapping */
  --primary: var(--primary-hex);
  --primary-light: var(--vuo-royal-blue);
  --primary-dark: #001344;
  
  --secondary: var(--secondary-hex);
  --secondary-light: #70a4ea;
  --secondary-dark: #2c64b5;

  --success: var(--success-hex);
  --warning: var(--warning-hex);
  --danger: var(--danger-hex);
  --info: var(--info-hex);

  /* Reusable brand color variable aliases requested by production standards */
  --primary-color: var(--primary-hex);
  --secondary-color: var(--secondary-hex);
  --success-color: var(--success-hex);
  --warning-color: var(--warning-hex);
  --danger-color: var(--danger-hex);
  --info-color: var(--info-hex);

  /* Neutrals (Light Mode Default) */
  --bg-app: var(--vuo-ivory); /* Ivory as warm primary background */
  --bg-surface: #ffffff;
  --text-main: #0a1128;
  --text-muted: #5c6c8c;
  --border-color: #d1d9e6;
  --border-focus: var(--vuo-green);

  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 3rem;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.04), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-premium: 0 20px 25px -5px rgba(13, 44, 108, 0.04), 0 8px 10px -6px rgba(13, 44, 108, 0.04);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Border Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

/* Dark Mode Variables - Dynamic class-based support */
body.dark-mode {
  --bg-app: #090d16;
  --bg-surface: #0f172a;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #1e293b;
  --border-focus: #3b82f6;

  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-premium: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* Global Reset & Typography Mapping */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

/* Heading Overrides with Outfit Font */
h1, h2, h3, h4, h5, h6, 
.display-1, .display-2, .display-3, .display-4, .display-5, .display-6,
.navbar-brand {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

/* Smooth Links */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--primary-dark);
}