/* tokens.css — Design tokens */
:root {
  /* Colors — Health-positive palette */
  --color-primary: #4a7c59;
  --color-primary-light: #6a9b78;
  --color-primary-dark: #3a6247;
  --color-accent: #2563eb;
  --color-accent-light: #3b82f6;

  /* Traffic light (pain) */
  --color-green: #16a34a;
  --color-yellow: #f59e0b;
  --color-red: #dc2626;

  /* Semantic */
  --color-success: #16a34a;
  --color-warning: #f59e0b;
  --color-danger: #dc2626;
  --color-info: #0ea5e9;

  /* Surfaces — Dark mode default */
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-raised: #334155;
  --color-surface-overlay: #475569;

  /* Text */
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-inverse: #0f172a;

  /* Borders */
  --color-border: #334155;
  --color-border-light: #475569;

  /* Spacing scale (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Type scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;

  /* Font */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", monospace;

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

  /* Line heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  /* Borders */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);

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

  /* Layout */
  --nav-height: 4rem;
  --page-max-width: 48rem;
}

/* Light mode override */
@media (prefers-color-scheme: light) {
  :root {
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-surface-raised: #f1f5f9;
    --color-surface-overlay: #e2e8f0;
    --color-text: #1e293b;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --color-text-inverse: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-light: #cbd5e1;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  }
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-raised: #334155;
  --color-surface-overlay: #475569;
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-inverse: #0f172a;
  --color-border: #334155;
  --color-border-light: #475569;
}

[data-theme="light"] {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-raised: #f1f5f9;
  --color-surface-overlay: #e2e8f0;
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-text-inverse: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-light: #cbd5e1;
}