:root {
  /* Colors - Warm Academic Palette */
  --color-primary: #8b4513; /* Rich saddle brown */
  --color-primary-dark: #6b3410;
  --color-primary-light: #a0522d;

  --color-accent: #c17817; /* Warm gold */
  --color-accent-light: #d4a574;
  --color-accent-dark: #9d5e12;

  --color-secondary: #2c5f4f; /* Deep forest green */
  --color-secondary-light: #3d7a66;

  --color-text: #2d2520; /* Deep warm brown */
  --color-text-light: #5a4a42;
  --color-text-muted: #8f7f75;

  --color-bg: #fdfbf7; /* Warm cream */
  --color-bg-secondary: #f8f3ed;
  --color-bg-tertiary: #f0e9df;
  --color-bg-accent: #fff8f0; /* Soft peach */

  --color-border: #e6dcc8;
  --color-border-light: #f2ebe0;
  --color-border-accent: #d4a574;

  /* Special colors */
  --color-highlight: #fef3e2; /* Soft yellow highlight */
  --color-shadow: rgba(139, 69, 19, 0.08);

  /* Typography */
  --font-serif: "Crimson Pro", "Lora", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, monospace;

  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1.0625rem; /* 17px - slightly larger for readability */
  --font-size-lg: 1.25rem; /* 20px */
  --font-size-xl: 1.5rem; /* 24px */
  --font-size-2xl: 1.875rem; /* 30px */
  --font-size-3xl: 2.25rem; /* 36px */
  --font-size-4xl: 3rem; /* 48px */
  --font-size-5xl: 3.75rem; /* 60px */

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

  /* Spacing */
  --space-xs: 0.375rem; /* 6px */
  --space-sm: 0.625rem; /* 10px */
  --space-md: 1.25rem; /* 20px */
  --space-lg: 2rem; /* 32px */
  --space-xl: 3rem; /* 48px */
  --space-2xl: 4.5rem; /* 72px */
  --space-3xl: 6rem; /* 96px */

  /* Layout */
  --max-width: 1400px;
  --max-width-narrow: 1400px;
  --max-width-wide: 1400px;
  --header-height: 80px;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(139, 69, 19, 0.06);
  --shadow-md: 0 4px 12px rgba(139, 69, 19, 0.08),
    0 2px 6px rgba(139, 69, 19, 0.04);
  --shadow-lg: 0 12px 28px rgba(139, 69, 19, 0.12),
    0 4px 12px rgba(139, 69, 19, 0.06);
  --shadow-xl: 0 20px 40px rgba(139, 69, 19, 0.16);

  /* Transitions */
  --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 450ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Line heights */
  --leading-tight: 1.2;
  --leading-snug: 1.375;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;
  --leading-loose: 2;
}