/* ============================================
   CSS VARIABLES - Design Tokens
   Central place for colors, fonts, spacing
   ============================================ */
:root {
  /* Brand Colors */
  --color-primary: #2E7D32;       /* Main green */
  --color-primary-dark: #1B5E20;  /* Darker green for hover */
  --color-primary-light: #4CAF50; /* Lighter green accent */

  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #EEEEEE;
  --color-gray-300: #E0E0E0;
  --color-gray-500: #9E9E9E;
  --color-gray-700: #616161;
  --color-gray-900: #212121;

  /* Typography */
  --font-primary: 'Google Sans', 'Noto Sans Thai', sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Layout */
  --container-max: 1440px;
  --header-height: 135px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}