:root {
  /* Top header background band and primary brand accent site-wide. */
  --primary-color: #1C4B79;
  /* Footer background, secondary panels, and dark neutral buttons site-wide. */
  --secondary-color: #232323;
  /* Body text, card titles, and general readable content in patient summary. */
  --ps-fg: #232323;
  /* Clickable text: sidebar links, "View details", lab test names, etc. */
  --ps-link: #1C4B79;
  /* Selected / active nav and section highlights. */
  --ps-active: #1C4B79;
  /* Section header icons in patient summary. */
  --ps-icon: #1C4B79;
  /* Primary action buttons in patient summary. */
  --ps-button-bg: #1C4B79;
  /* Text on status / category pills. */
  --ps-pill-fg: #1C4B79;
}