:root {
  /* Brand Colors */
  --color-primary: #32373c;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-accent-light: rgba(0, 113, 227, 0.08);

  /* Neutrals */
  --color-black: #000000;
  --color-heading: #1d1d1f;
  --color-body: #6e6e73;
  --color-muted: #86868b;
  --color-border: #d2d2d7;
  --color-border-light: #e8e8ed;

  /* Backgrounds */
  --color-white: #ffffff;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f7;
  --color-bg-dark: #1d1d1f;
  --color-bg-card: #ffffff;

  /* Typography — Inter */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Type Scale (clamp for fluid sizing) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.76rem + 0.26vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.88rem + 0.28vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.38vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 2.4vw, 2.75rem);
  --text-4xl: clamp(2.25rem, 1.5rem + 3.75vw, 3.5rem);
  --text-5xl: clamp(2.75rem, 1.8rem + 4.75vw, 4.5rem);

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

  /* Line Heights */
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  /* Letter Spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.02em;
  --tracking-wider: 0.06em;

  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  --space-section: clamp(4rem, 3rem + 5vw, 8rem);

  /* Layout */
  --container-max: 1200px;
  --container-wide: 1400px;
  --container-narrow: 800px;
  --container-padding: clamp(1.25rem, 1rem + 1.25vw, 2.5rem);

  /* Borders & Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.22, 1, 0.36, 1);

  /* Header */
  --header-height: 3.5rem;
  --header-bg: rgba(255, 255, 255, 0.72);
  --header-bg-scrolled: rgba(255, 255, 255, 0.92);

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}