:root {
  /* --- Colors: Modern Academic Palette --- */
  /* Primary: Deep Academic Blue - Authority & Trust */
  --color-primary: #1A3A5A;
  --color-primary-light: #2C537A;
  --color-primary-dark: #0D243B;

  /* Secondary: Sage Green - Growth & Empathy ("Der Weise") */
  --color-secondary: #748B75;
  --color-secondary-light: #96AD97;
  --color-secondary-dark: #566D57;

  /* Accent: Warm Clay - Human Connection */
  --color-accent: #C77D63;
  --color-accent-hover: #D89078;

  /* Neutrals: Editorial High-End */
  --color-bg-body: #F9F9F7; /* Slightly warm off-white, paper feel */
  --color-bg-surface: #FFFFFF;
  --color-bg-subtle: #F2F2F0;
  --color-text-main: #1F2937;
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;

  /* Multi-purpose Status */
  --color-success: #059669;
  --color-warning: #D97706;
  --color-error: #DC2626;

  /* --- Typography --- */
  /* Headings: Serif for Academic Weight */
  --font-heading: 'Merriweather', serif;
  /* Body: Sans for Readability */
  --font-body: 'Inter', sans-serif;

  /* Scale */
  --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;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* --- Spacing (8px Grid) --- */
  --space-1: 0.25rem; /* 4px */
  --space-2: 0.5rem;  /* 8px */
  --space-3: 0.75rem; /* 12px */
  --space-4: 1rem;    /* 16px */
  --space-6: 1.5rem;  /* 24px */
  --space-8: 2rem;    /* 32px */
  --space-12: 3rem;   /* 48px */
  --space-16: 4rem;   /* 64px */
  --space-24: 6rem;   /* 96px */

  /* --- Shadows & Radius --- */
  --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);
  
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* --- Transitions --- */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
}