/* ==========================================================================
   Design Tokens — Tangent Forge
   ========================================================================== */

:root {
  /* Colors - Light Mode (default) */
  --color-bg: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-text: #1a1a1a;
  --color-text-muted: #64748B;
  --color-text-subtle: #94A3B8;
  
  /* Accent Colors */
  --color-primary: #2563EB;
  --color-primary-hover: #1E40AF;
  --color-primary-light: #DBEAFE;
  --color-secondary: #059669;
  --color-secondary-hover: #047857;
  --color-secondary-light: #D1FAE5;
  
  /* Borders & Shadows */
  --color-border: #E5E7EB;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-size-xs: 0.875rem;    /* 14px */
  --font-size-sm: 0.9375rem;   /* 15px */
  --font-size-base: 1.0625rem; /* 17px */
  --font-size-lg: 1.25rem;     /* 20px */
  --font-size-xl: 1.5rem;      /* 24px */
  --font-size-2xl: 2rem;       /* 32px */
  --font-size-3xl: 2.5rem;     /* 40px */
  --font-size-4xl: 3rem;       /* 48px */
  
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 800;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.75;
  
  /* Spacing Scale */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 0.75rem;   /* 12px */
  --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 */
  
  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-lg);
  --border-radius-sm: 6px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Breakpoints (for reference in media queries) */
/* Mobile: < 640px */
/* Tablet: 640px - 1024px */
/* Desktop: > 1024px */