/* AIBM Marketing Site - CSS Variables */
/* Design Tokens for Colors, Spacing, Typography */

:root {
  /* Primary Colors */
  --primary: #1976D2;
  --primary-light: #42A5F5;
  --primary-dark: #1565C0;

  /* Neutrals */
  --gray-900: #212121;
  --gray-700: #616161;
  --gray-500: #9E9E9E;
  --gray-300: #E0E0E0;
  --gray-100: #F5F5F5;
  --white: #FFFFFF;

  /* Pillar Colors */
  --pillar-strategy: #1976D2;
  --pillar-people: #388E3C;
  --pillar-process: #F57C00;
  --pillar-data: #7B1FA2;
  --pillar-ai: #C62828;
  --pillar-governance: #00838F;

  /* Level Colors */
  --level-0: #9E9E9E;
  --level-1: #F57C00;
  --level-2: #FBC02D;
  --level-3: #388E3C;
  --level-4: #1976D2;
  --level-5: #7B1FA2;

  /* Spacing Scale */
  --space-xs: 0.25rem;    /* 4px */
  --space-sm: 0.5rem;     /* 8px */
  --space-md: 1rem;       /* 16px */
  --space-lg: 1.5rem;     /* 24px */
  --space-xl: 2rem;       /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */
  --space-4xl: 6rem;      /* 96px */

  /* Typography Scale */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.16);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Breakpoints (for JS usage) */
  --breakpoint-mobile: 640px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1280px;

  /* Layout */
  --container-max-width: 1280px;
  --container-padding: var(--space-lg);
  --nav-height: 72px;
}

/* Dark mode support (optional future enhancement) */
@media (prefers-color-scheme: dark) {
  :root {
    --gray-900: #F5F5F5;
    --gray-700: #E0E0E0;
    --gray-300: #616161;
    --gray-100: #212121;
    --white: #1A1A1A;
  }
}