/**
 * Design Tokens - VTM Option
 * Colors, fonts, spacing, and other design variables
 */

:root {
  /* ----- Colors - Brand & UI ----- */
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-primary-light: #60a5fa;
  --color-success: #10b981;
  --color-success-dark: #059669;
  --color-danger: #ef4444;
  --color-danger-dark: #dc2626;
  --color-warning: #f59e0b;
  --color-warning-dark: #d97706;
  --color-info: #3b82f6;

  /* ----- Colors - Dark theme ----- */
  --color-bg: #0f172a;
  --color-bg-card: #1e293b;
  --color-bg-elevated: #334155;
  --color-border: #334155;
  --color-border-focus: var(--color-primary);

  /* ----- Colors - Text (WCAG AA contrast on dark bg) ----- */
  --color-text-primary: #ffffff;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-text-muted-accessible: #a8b4c4;
  --color-text-inverse: #0f172a;

  /* ----- Typography ----- */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Monaco,
    Consolas, monospace;

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

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;

  /* ----- Spacing ----- */
  --space-0: 0;
  --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;

  /* ----- Radii ----- */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* ----- Shadows ----- */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.35);
  --shadow-focus: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);

  /* ----- Transitions ----- */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* ----- Consistent spacing scale ----- */
  --section-gap: var(--space-8);
  --card-gap: var(--space-6);

  /* ----- Z-index scale ----- */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-tooltip: 1060;
}