/**
 * Design System Variables
 * CSS Custom Properties - Theme-aware
 */

:root {
  /* Theme will be applied via [data-theme] attribute */
  /* Default to dark theme colors */

  /* Primary Colors - Brand */
  --color-black: #000000;
  --color-gold: #D4AF37;
  --color-gold-light: #E8D5A5;
  --color-gold-dark: #B8942C;

  /* Background Colors - Dark Theme Default */
  --color-bg-base: #0A0A0A;
  --color-bg-secondary: #1A1A1A;
  --color-bg-tertiary: #2A2A2A;
  --color-bg-card: #1F1F1F;

  /* Legacy aliases for backward compatibility */
  --color-bg-dark: var(--color-bg-base);
  --color-bg-medium: var(--color-bg-secondary);
  --color-bg-light: var(--color-bg-tertiary);

  /* Text Colors - Dark Theme Default */
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #CCCCCC;
  --color-text-muted: #888888;
  --color-text-disabled: #555555;

  /* Progress Bar */
  --progress-text-color: #FFFFFF;

  /* Semantic Colors */
  --color-success: #4CAF50;
  --color-error: #F44336;
  --color-warning: #FF9800;
  --color-info: #2196F3;

  /* Border Colors */
  --color-border: #333333;
  --color-border-light: #444444;
  --color-border-focus: var(--color-gold);

  /* Spacing Scale */
  --spacing-xs: 0.5rem;    /* 8px */
  --spacing-sm: 1rem;      /* 16px */
  --spacing-md: 1.5rem;    /* 24px */
  --spacing-lg: 2rem;      /* 32px */
  --spacing-xl: 3rem;      /* 48px */
  --spacing-2xl: 4rem;     /* 64px */

  /* Font Sizes */
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.5rem;      /* 24px */
  --font-size-2xl: 2rem;       /* 32px */
  --font-size-3xl: 3rem;       /* 48px */

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

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-popover: 500;
  --z-tooltip: 600;

  /* Layout Heights */
  --header-height: 35px;

  /* Container Max Width */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;

  /* Breakpoints (for reference in JS) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
}

/* Light Theme Override */
[data-theme="light"] {
  /* Brand colors - same in both themes */
  --color-gold: #D4AF37;
  --color-gold-light: #E8D5A5;
  --color-gold-dark: #B8942C;

  /* Background Colors - Light Theme with 90% opacity */
  --color-bg-base: rgba(255, 255, 255, 0.9);
  --color-bg-secondary: rgba(245, 245, 245, 0.9);
  --color-bg-tertiary: rgba(232, 232, 232, 0.9);
  --color-bg-card: rgba(255, 255, 255, 0.9);

  /* Legacy aliases */
  --color-bg-dark: var(--color-bg-base);
  --color-bg-medium: var(--color-bg-secondary);
  --color-bg-light: var(--color-bg-tertiary);

  /* Text Colors - Light Theme */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #888888;
  --color-text-disabled: #CCCCCC;

  /* Progress Bar */
  --progress-text-color: #1A1A1A;

  /* Border Colors - Light Theme */
  --color-border: #DDDDDD;
  --color-border-light: #E8E8E8;
  --color-border-focus: var(--color-gold);
}

/* Dark Theme Explicit (same as default) */
[data-theme="dark"] {
  /* Keep dark theme colors explicit for clarity */
  --color-bg-base: #0A0A0A;
  --color-bg-secondary: #1A1A1A;
  --color-bg-tertiary: #2A2A2A;
  --color-bg-card: #1F1F1F;

  --color-text-primary: #FFFFFF;
  --color-text-secondary: #CCCCCC;
  --color-text-muted: #888888;
  --color-text-disabled: #555555;

  /* Progress Bar */
  --progress-text-color: #FFFFFF;

  --color-border: #333333;
  --color-border-light: #444444;
}