:root {
  /* Primary palette */
  --color-primary: #1B5E20;
  --color-primary-light: #2E7D32;
  --color-primary-dark: #0D3B12;
  --color-accent: #4CAF50;
  --color-accent-light: #81C784;

  /* Surfaces */
  --color-surface: #FAFDF7;
  --color-surface-alt: #E8F5E9;
  --color-white: #FFFFFF;
  --color-black: #111111;

  /* Text */
  --color-text: #1A1A1A;
  --color-text-muted: #5A6B5E;
  --color-text-on-primary: #FFFFFF;
  --color-text-on-accent: #FFFFFF;

  /* Borders */
  --color-border: #C8E6C9;
  --color-border-dark: #A5D6A7;

  /* Status */
  --color-warning: #F57F17;
  --color-warning-bg: #FFF8E1;
  --color-warning-text: #5D4037;
  --color-danger: #C62828;
  --color-success: #2E7D32;
  --color-info: #1565C0;

  /* Typography */
  --font-heading: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --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;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

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

  /* 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;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --sidebar-width: 280px;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-index scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-banner: 500;
  --z-splash: 600;
}