:root {
  /* Colors */
  --color-obsidian: #070709;
  --color-paper-white: #ffffff;
  --color-cloud-gray: #f5f5f5;
  --color-sky-tint: #d7e6f5;
  --color-charcoal: #60606c;
  --color-slate: #8b8b8b;
  --color-ink: #151515;
  --color-surgical-blue: #2597d0;
  --color-sky-gradient: #779bc1;
  --gradient-sky-gradient: linear-gradient(180deg, #779bc1 0%, #9abfda 58%, #cbdcec 100%);

  /* Typography — Font Families */
  --font-sans-serif: 'sans-serif', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-open-runde: 'Open Runde', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-inter: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-the-doctor-freeversion: 'The Doctor FreeVersion', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-open-runde-semibold: 'Open Runde Semibold', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-open-runde-medium: 'Open Runde Medium', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-open-runde-regular: 'Open Runde Regular', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-open-runde-bold: 'Open Runde Bold', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Typography — Scale */
  --text-caption: 12px;
  --leading-caption: 1.2;
  --tracking-caption: -0.01px;
  --text-body-sm: 14px;
  --leading-body-sm: 1.4;
  --tracking-body-sm: -0.01px;
  --text-body: 16px;
  --leading-body: 1.49;
  --tracking-body: -0.01px;
  --text-body-lg: 18px;
  --leading-body-lg: 1.4;
  --tracking-body-lg: -0.01px;
  --text-subheading: 20px;
  --leading-subheading: 1.4;
  --tracking-subheading: -0.04px;
  --text-heading-sm: 28px;
  --leading-heading-sm: 1.2;
  --tracking-heading-sm: -0.04px;
  --text-heading: 44px;
  --leading-heading: 1.1;
  --tracking-heading: -0.04px;
  --text-display: 80px;
  --leading-display: 0.9;
  --tracking-display: -0.04px;

  /* Typography — Weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Spacing */
  --spacing-unit: 4px;
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-24: 24px;
  --spacing-28: 28px;
  --spacing-32: 32px;
  --spacing-36: 36px;
  --spacing-40: 40px;
  --spacing-52: 52px;
  --spacing-56: 56px;
  --spacing-80: 80px;
  --spacing-96: 96px;
  --spacing-100: 100px;
  --spacing-120: 120px;

  /* Layout */
  --page-max-width: 1200px;
  --section-gap: 80-120px;
  --card-padding: 40-48px;
  --element-gap: 12-16px;

  /* Border Radius */
  --radius-lg: 10px;
  --radius-2xl: 18px;
  --radius-3xl: 24px;
  --radius-3xl-2: 32px;
  --radius-3xl-3: 36px;
  --radius-3xl-4: 40px;
  --radius-full: 48px;
  --radius-full-2: 60px;
  --radius-full-3: 100px;
  --radius-full-4: 120px;
  --radius-full-5: 135px;

  /* Named Radii */
  --radius-tags: 100px;
  --radius-cards: 18px;
  --radius-icons: 8px;
  --radius-inputs: 12px;
  --radius-buttons: 100px;
  --radius-nav-pills: 100px;
  --radius-large-cards: 32-48px;

  /* Shadows */
  --shadow-subtle: rgba(228, 229, 231, 0.24) 0px 1px 2px 0px;
  --shadow-subtle-2: rgba(36, 36, 40, 0.1) 0px 1px 2px 0px, rgba(36, 36, 40, 0.09) 0px 3px 3px 0px, rgba(36, 36, 40, 0.05) 0px 6px 4px 0px, rgba(36, 36, 40, 0.01) 0px 11px 4px 0px;
  --shadow-subtle-3: rgba(23, 107, 197, 0.08) 0px 1px 1px 0px, rgba(23, 107, 197, 0.07) 0px 3px 3px 0px;
  --shadow-xl: rgba(16, 55, 132, 0.03) 0px 17px 37px 0px, rgba(16, 55, 132, 0.03) 0px 67px 67px 0px, rgba(16, 55, 132, 0.02) 0px 150px 90px 0px;

  /* Surfaces */
  --surface-sky-canvas: #779bc1;
  --surface-paper-canvas: #ffffff;
  --surface-cloud-surface: #f5f5f5;
  --surface-sky-tint-surface: #d7e6f5;
  --surface-obsidian-surface: #070709;
}