/**
 * OKHAM.ORG UI Kit - Design Tokens
 * Standards Foundation Aesthetic
 * Calm, precise, neutral, documentation-first
 */

:root {
  /* Colors - Light Theme (Primary) */
  --okham-color-bg: #ffffff;
  --okham-color-surface: #f8f9fa;
  --okham-color-surface-elevated: #ffffff;
  --okham-color-border: #e1e4e8;
  --okham-color-border-subtle: #f0f2f4;

  --okham-color-text: #24292e;
  --okham-color-text-secondary: #586069;
  --okham-color-text-muted: #6a737d;

  --okham-color-accent: #0366d6;
  --okham-color-accent-hover: #0256c1;
  --okham-color-accent-subtle: #f1f8ff;

  --okham-color-success: #28a745;
  --okham-color-success-subtle: #dcffe4;
  --okham-color-warning: #ffd33d;
  --okham-color-warning-subtle: #fffbdd;
  --okham-color-error: #d73a49;
  --okham-color-error-subtle: #ffeef0;
  --okham-color-info: #0366d6;
  --okham-color-info-subtle: #f1f8ff;

  /* Typography */
  --okham-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --okham-font-family-mono: "SF Mono", Monaco, "Cascadia Mono", "Roboto Mono", Consolas, "Courier New", monospace;

  --okham-font-size-xs: 0.75rem;     /* 12px */
  --okham-font-size-sm: 0.875rem;    /* 14px */
  --okham-font-size-base: 1rem;      /* 16px */
  --okham-font-size-lg: 1.125rem;    /* 18px */
  --okham-font-size-xl: 1.25rem;     /* 20px */
  --okham-font-size-2xl: 1.5rem;     /* 24px */
  --okham-font-size-3xl: 1.875rem;   /* 30px */
  --okham-font-size-4xl: 2.25rem;    /* 36px */
  --okham-font-size-5xl: 3rem;       /* 48px */

  --okham-line-height-tight: 1.25;
  --okham-line-height-normal: 1.5;
  --okham-line-height-relaxed: 1.75;

  --okham-font-weight-normal: 400;
  --okham-font-weight-medium: 500;
  --okham-font-weight-semibold: 600;
  --okham-font-weight-bold: 700;

  /* Spacing Scale */
  --okham-space-1: 0.25rem;   /* 4px */
  --okham-space-2: 0.5rem;    /* 8px */
  --okham-space-3: 0.75rem;   /* 12px */
  --okham-space-4: 1rem;      /* 16px */
  --okham-space-5: 1.25rem;   /* 20px */
  --okham-space-6: 1.5rem;    /* 24px */
  --okham-space-8: 2rem;      /* 32px */
  --okham-space-10: 2.5rem;   /* 40px */
  --okham-space-12: 3rem;     /* 48px */
  --okham-space-16: 4rem;     /* 64px */
  --okham-space-20: 5rem;     /* 80px */
  --okham-space-24: 6rem;     /* 96px */

  /* Border Radius */
  --okham-radius-sm: 0.125rem;  /* 2px */
  --okham-radius-base: 0.25rem; /* 4px */
  --okham-radius-md: 0.375rem;  /* 6px */
  --okham-radius-lg: 0.5rem;    /* 8px */
  --okham-radius-xl: 0.75rem;   /* 12px */
  --okham-radius-full: 9999px;

  /* Shadows - Minimal, subtle */
  --okham-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --okham-shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --okham-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --okham-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Container Widths */
  --okham-container-sm: 640px;
  --okham-container-md: 768px;
  --okham-container-lg: 1024px;
  --okham-container-xl: 1280px;
  --okham-container-2xl: 1536px;

  /* Z-index Layers */
  --okham-z-base: 0;
  --okham-z-dropdown: 1000;
  --okham-z-sticky: 1100;
  --okham-z-fixed: 1200;
  --okham-z-modal-backdrop: 1300;
  --okham-z-modal: 1400;
  --okham-z-popover: 1500;
  --okham-z-tooltip: 1600;

  /* Transitions */
  --okham-transition-fast: 150ms ease;
  --okham-transition-base: 200ms ease;
  --okham-transition-slow: 300ms ease;

  /* Focus Ring */
  --okham-focus-ring-width: 2px;
  --okham-focus-ring-offset: 2px;
  --okham-focus-ring-color: var(--okham-color-accent);
}

/* Dark Theme Support (Optional) */
@media (prefers-color-scheme: dark) {
  :root {
    --okham-color-bg: #0d1117;
    --okham-color-surface: #161b22;
    --okham-color-surface-elevated: #1c2128;
    --okham-color-border: #30363d;
    --okham-color-border-subtle: #21262d;

    --okham-color-text: #c9d1d9;
    --okham-color-text-secondary: #8b949e;
    --okham-color-text-muted: #6e7681;

    --okham-color-accent: #58a6ff;
    --okham-color-accent-hover: #79b8ff;
    --okham-color-accent-subtle: #0d2d5e;

    --okham-color-success: #3fb950;
    --okham-color-success-subtle: #012e1d;
    --okham-color-warning: #d29922;
    --okham-color-warning-subtle: #341a00;
    --okham-color-error: #f85149;
    --okham-color-error-subtle: #490008;
    --okham-color-info: #58a6ff;
    --okham-color-info-subtle: #0d2d5e;
  }
}