/*
 * Echelon 42 Design Tokens
 * Based on Brand Guide v1.0 - January 2026
 */

:root {
  /* ================================
     PRIMARY COLORS
     ================================ */
  --navy: #051C2C;
  --navy-light: #0B3D5C;
  --sky: #0A7CB5;
  --teal: #00A699;
  --teal-light: #00B8A9;
  --maroon: #7A1416;

  /* ================================
     NEUTRAL COLORS
     ================================ */
  --white: #FFFFFF;
  --cream: #FAFBFC;
  --gray-100: #F8FAFC;
  --gray-200: #E2E8F0;
  --gray-400: #94A3B8;
  --gray-600: #64748B;
  --gray-800: #1E293B;

  /* ================================
     TYPOGRAPHY
     ================================ */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Font Sizes - using clamp for fluid scaling */
  --text-xs: 0.85rem;      /* 13.6px - Labels, eyebrows */
  --text-sm: 0.9rem;       /* 14.4px - Buttons */
  --text-base: 1rem;       /* 16px - Body */
  --text-lg: 1.25rem;      /* 20px - Body large, card titles */
  --text-xl: clamp(2rem, 4vw, 3rem);      /* Section titles */
  --text-2xl: clamp(2.5rem, 5vw, 4rem);   /* Hero headlines */
  --text-metric: clamp(2rem, 4vw, 3.5rem); /* Metric values */

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

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.1;
  --leading-snug: 1.2;
  --leading-normal: 1.4;
  --leading-relaxed: 1.6;
  --leading-loose: 1.7;

  /* Letter Spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.1em;

  /* ================================
     SPACING SCALE
     ================================ */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.5rem;    /* 24px */
  --space-6: 2rem;      /* 32px */
  --space-8: 2.5rem;    /* 40px */
  --space-10: 3rem;     /* 48px */
  --space-12: 4rem;     /* 64px */
  --space-16: 5rem;     /* 80px */
  --space-20: 7.5rem;   /* 120px */

  /* ================================
     LAYOUT
     ================================ */
  --container-max: 1400px;
  --container-padding: 5%;
  --section-padding: var(--space-20);
  --section-padding-compact: var(--space-16);
  --nav-height: 72px;

  /* Grid Gaps */
  --gap-sm: 1.5rem;     /* 24px */
  --gap-md: 2.5rem;     /* 40px */
  --gap-lg: 5rem;       /* 80px */

  /* ================================
     BORDER RADIUS
     ================================ */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 100px;

  /* ================================
     SHADOWS
     ================================ */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 40px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 4px 60px rgba(0, 0, 0, 0.08);

  /* ================================
     TRANSITIONS
     ================================ */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease-in-out;

  /* ================================
     Z-INDEX SCALE
     ================================ */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 50;
  --z-modal: 100;
  --z-overlay: 200;
}