/* ======== VARIABLES ======== */
:root {
  /* Core Colors - Tandem Theory Palette */
  --charcoal: #1c1c1e;
  --charcoal-light: #2c2c2e;
  --charcoal-lighter: #3a3a3c;
  --red-accent: #fe0000;
  --red-light: #ff3333;
  --red-dark: #cc0000;
  --gray-accent: #9ca3af;
  --gray-light: #d1d5db;
  --gray-dark: #6b7280;
  --white: #ffffff;
  --white-90: rgba(255, 255, 255, 0.9);
  --white-75: rgba(255, 255, 255, 0.75);
  --white-70: rgba(255, 255, 255, 0.7);
  --white-60: rgba(255, 255, 255, 0.6);
  --white-40: rgba(255, 255, 255, 0.4);
  --white-20: rgba(255, 255, 255, 0.2);
  --white-10: rgba(255, 255, 255, 0.1);
  --white-05: rgba(255, 255, 255, 0.05);

  /* Gradients */
  --gradient-red: linear-gradient(135deg, var(--red-accent) 0%, var(--red-light) 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  --gradient-dark: linear-gradient(180deg, var(--charcoal) 0%, #0a0a0b 100%);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --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;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;

  /* Shadows */
  --shadow-glow-red: 0 0 60px rgba(254, 0, 0, 0.3);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Z-index */
  --z-particles: 1;
  --z-content: 10;
  --z-nav: 100;
  --z-modal: 1000;
}