:root {
  /* Primary Colors */
  --color-primary: #7fa856;
  --color-secondary: #FFE52A;
  --color-accent: #CF0F0F;
  --color-bg: #061E29;

  /* RGB values for rgba() usage */
  --color-primary-rgb: 127, 168, 86;
  --color-secondary-rgb: 255, 229, 42;
  --color-accent-rgb: 207, 15, 15;
  --color-bg-rgb: 6, 30, 41;

  /* Derived colors */
  --color-bg-light: #0a2a38;
  --color-bg-lighter: #0e3648;
  --color-text: #ffffff;
  --color-text-muted: #a0b4be;
  --color-border: rgba(255, 255, 255, 0.1);

  /* Typography */
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft JhengHei", "PingFang TC", sans-serif;
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.4vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Layout */
  --container-max: 1200px;
  --header-height: 70px;

  /* Effects */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --transition: 250ms ease;
  --transition-fast: 150ms ease;
}