/* OTR Brand Variables */
:root {
  /* Colors - Charcoal Dark Theme */
  --color-void: #121214;
  --color-void-rgb: 18, 18, 20;
  --color-surface: #1c1c1f;
  --color-surface-raised: #28282c;
  --color-border: #35353a;
  --color-border-light: #48484f;

  /* Text */
  --color-text-primary: #f0f0f2;
  --color-text-secondary: #a0a0a8;
  --color-text-muted: #686870;

  /* Accent - Charcoal Blue */
  --color-accent: #3b82f6;
  --color-accent-light: #60a5fa;
  --color-accent-dark: #2563eb;
  --color-accent-glow: rgba(59, 130, 246, 0.4);
  --color-accent-subtle: rgba(59, 130, 246, 0.1);
  --color-accent-muted: rgba(59, 130, 246, 0.7);

  /* Extended Palette - Warm */
  --color-orange: #FFA101;
  --color-orange-muted: rgba(255, 161, 1, 0.7);
  --color-orange-subtle: rgba(255, 161, 1, 0.1);
  --color-deep-orange: #E88005;
  --color-deep-orange-muted: rgba(232, 128, 5, 0.7);
  --color-deep-orange-subtle: rgba(232, 128, 5, 0.12);

  /* Extended Palette - Deep Warm */
  --color-brick: #8B1100;
  --color-brick-subtle: rgba(139, 17, 0, 0.15);
  --color-maroon: #701000;
  --color-maroon-muted: rgba(185, 50, 20, 0.8);
  --color-maroon-subtle: rgba(112, 16, 0, 0.12);

  /* Extended Palette - Cool Contrast */
  --color-teal: #226365;
  --color-teal-light: #2d8285;
  --color-teal-muted: rgba(34, 99, 101, 0.7);
  --color-teal-subtle: rgba(34, 99, 101, 0.15);
  --color-teal-glow: rgba(34, 99, 101, 0.4);

  /* Semantic */
  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-info: #3b82f6;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 4rem;
  --font-size-5xl: 4.5rem;

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

  --letter-spacing-tighter: -0.03em;
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.01em;

  --line-height-tight: 1.1;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing */
  --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;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-wide: 1400px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--color-accent-glow);
  --shadow-glow-sm: 0 0 20px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-slower: 600ms ease;

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-tooltip: 400;
}