:root {
  /* 8-Point Grid System */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-7: 56px;
  --space-8: 64px;
  --space-9: 72px;
  --space-10: 80px;
  --space-11: 88px;
  --space-12: 96px;

  /* Colors */
  --color-primary: #ff0000;
  --color-primary-dark: #cc0000;
  --color-primary-light: #ff3333;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* YouTube Brand Colors */
  --color-youtube-red: #ff0000;
  --color-instagram-purple: #e4405f;
  --color-google-blue: #4285f4;

  /* Typography - Major Third Scale (1.25 factor) */
  --font-family-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-family-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;

  /* Font Sizes - Major Third Scale (base: 16px = 1rem) */
  /* Going down: 16px -> 12.8px -> 10.24px */
  --text-xs: 0.8rem;      /* 12.8px */
  --text-sm: 0.875rem;    /* 14px */
  
  /* Base scale starting point */
  --text-base: 1rem;      /* 16px - base paragraph */
  
  /* Going up: 16px -> 20px -> 25px -> 31.25px -> 39.0625px -> 48.828125px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px - h6 scale */
  --text-2xl: 1.5625rem;  /* 25px - h5 scale */
  --text-3xl: 1.95rem;    /* 31.2px - h4 scale */
  --text-4xl: 2.44rem;    /* 39px - h3 scale */
  --text-5xl: 3.05rem;    /* 48.8px - h2 scale */
  --text-6xl: 3.81rem;    /* 61px - h1 scale */

  /* Line Heights */
  --leading-loose: 1.5;    /* 150% for paragraphs */
  --leading-normal: 1.3;   /* 130% for h4 */
  --leading-snug: 1.1;     /* 110% for h2 */
  --leading-tight: 1;      /* 100% for h1 */
  --leading-none: 0.95;    /* 95% for tight spacing */

  /* Letter Spacing - Tightening as text gets larger */
  --tracking-normal: 0;      /* Default for paragraphs */
  --tracking-tight: -0.005em; /* -0.5% for h6 */
  --tracking-tighter: -0.01em; /* -1% for h4 */
  --tracking-tightest: -0.015em; /* -1.5% for h3 */
  --tracking-ultra: -0.02em;  /* -2% for h1 */

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Container Max Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
}

/* Red Highlight Utility Class */
.highlight-red {
  color: var(--color-primary);
  font-weight: var(--font-bold);
}