/* CSS CUSTOM PROPERTIES (VARIABLES) */
:root {
  /* COLORS - UK Professional Style */
  --color-bg: #F8F8F8;
  --color-dark: #1A2B3C;
  --color-secondary: #5A6B7C;
  --color-primary: var(--color-emerald-green);
  --color-hero-title: var(--color-emerald-green);
  --color-heading-yellow: var(--color-emerald-green);
  --color-dark-card-bg: #2C3E50;
  --color-yellow-button: var(--color-emerald-green);
  --color-yellow-hover: var(--color-emerald-green-hover);
  --color-emerald-green: #2ECC71;
  --color-emerald-green-hover: #27AE60;
  --color-promo-red: #e74c3c;
  --color-gold: #FFD700;

  /* TYPOGRAPHY - Professional Fonts */
  --font-base: 'Open Sans', sans-serif;
  --font-heading: 'Roboto', sans-serif;
  
  --fs-sm: 0.875rem;    /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md: 1.125rem;    /* 18px */
  --fs-lg: 1.25rem;     /* 20px */
  --fs-xl: 1.875rem;    /* 30px */
  
  --line-height: 1.6;
  
  /* SPACING */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
}

/* RESET & BASE STYLES */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-base);
  font-size: var(--fs-base);
  line-height: var(--line-height);
  color: var(--color-dark);
  background-color: var(--color-bg);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* RESPONSIVE CONTAINER */
@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
}