/* Theme System - Light/Dark Mode Variables (matches system preference) */

:root {
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Typography */
  --font-family-base: futura-pt, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-weight-normal: 400;
  --font-weight-bold: 700;
  --font-weight-semibold: 600;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

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

/* Light Mode (default) */
:root {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-tertiary: #e8e8e8;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-text-tertiary: #6a6a6a;
  --color-accent: #3c4a44;
  --color-accent-light: #506159;
  --color-accent-dark: #2a332f;
  --color-border: #d0d0d0;
  --color-card-bg: #ffffff;
  --color-card-border: #e0e0e0;
  --color-muted-bg: #f0f0f0;
  --color-muted-text: #666666;
}

/* Dark Mode (system preference) */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-primary: #0d1110;
    --color-bg-secondary: #161b19;
    --color-bg-tertiary: #1f2623;
    --color-text-primary: #ffffff;
    --color-text-secondary: #e0e0e0;
    --color-text-tertiary: #b0b0b0;
    --color-accent: #637a71;
    --color-accent-light: #7c948a;
    --color-accent-dark: #4a5a53;
    --color-border: #2d3532;
    --color-card-bg: #161b19;
    --color-card-border: #1f2623;
    --color-muted-bg: #2a332f;
    --color-muted-text: #a0a0a0;
  }
}

/* Support for data-theme attribute (for JavaScript control if needed) */
[data-theme="light"] {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-tertiary: #e8e8e8;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-text-tertiary: #6a6a6a;
  --color-accent: #3c4a44;
  --color-accent-light: #506159;
  --color-accent-dark: #2a332f;
  --color-border: #d0d0d0;
  --color-card-bg: #ffffff;
  --color-card-border: #e0e0e0;
  --color-muted-bg: #f0f0f0;
  --color-muted-text: #666666;
}

[data-theme="dark"] {
  --color-bg-primary: #0d1110;
  --color-bg-secondary: #161b19;
  --color-bg-tertiary: #1f2623;
  --color-text-primary: #ffffff;
  --color-text-secondary: #e0e0e0;
  --color-text-tertiary: #b0b0b0;
  --color-accent: #637a71;
  --color-accent-light: #7c948a;
  --color-accent-dark: #4a5a53;
  --color-border: #2d3532;
  --color-card-bg: #161b19;
  --color-card-border: #1f2623;
  --color-muted-bg: #2a332f;
  --color-muted-text: #a0a0a0;
}