:root {
  /* === Colors === */
  /* Primary (from Brand Identity Guide) */
  --color-navy: #06253B;
  --color-teal: #1B686C;
  --color-teal-dark: #134E52;
  --color-teal-light: #E9F2F2;

  /* Backgrounds (from Brand Guide background palette) */
  --color-bg-primary: #FFFFFF;
  --color-bg-alt: #F0F4F7;
  --color-bg-warm: #EFEBE0;

  /* Text */
  --color-text-primary: #1A1A2E;
  --color-text-secondary: #5A6B7B;
  --color-text-on-dark: #FFFFFF;
  --color-text-on-dark-muted: #A8B8C8;

  /* Borders (from Brand Guide: Platinum Grey, Pearl Slate) */
  --color-border: #E1E8ED;
  --color-border-light: #E8ECEB;

  /* === Typography === */
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Font Sizes - Desktop */
  --text-hero: 56px;
  --text-h2: 40px;
  --text-h3: 24px;
  --text-card-title: 20px;
  --text-body: 17px;
  --text-nav: 15px;
  --text-label: 13px;
  --text-btn: 15px;

  /* Font Weights */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Line Heights */
  --leading-tight: 1.2;
  --leading-snug: 1.3;
  --leading-normal: 1.7;

  /* Letter Spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;

  /* === Spacing === */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 100px;
  --space-4xl: 140px;

  /* === Layout === */
  --container-max: 1200px;
  --container-padding: 24px;
  --nav-height: 88px;
  --nav-height-mobile: 72px;

  /* === Shadows === */
  --shadow-sm: 0 1px 3px rgba(6, 37, 59, 0.08);
  --shadow-md: 0 4px 12px rgba(6, 37, 59, 0.12);
  --shadow-nav: 0 1px 8px rgba(6, 37, 59, 0.1);

  /* === Transitions === */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s ease;

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

/* Tablet overrides */
@media (min-width: 768px) {
  :root {
    --container-padding: 40px;
  }
}

/* Desktop overrides */
@media (min-width: 1024px) {
  :root {
    --container-padding: 24px;
  }
}

/* Mobile font size overrides */
@media (max-width: 767px) {
  :root {
    --text-hero: 36px;
    --text-h2: 28px;
    --text-h3: 20px;
    --text-card-title: 18px;
    --text-body: 16px;
    --text-nav: 14px;
    --text-label: 12px;
    --text-btn: 14px;
    --space-3xl: 60px;
    --space-4xl: 80px;
    --nav-height: var(--nav-height-mobile);
  }
}