/**
 * Theme: slate-blue — primary rgb(43 59 79) with matching tints for UI chrome.
 */
:root {
  --primary-color: rgb(43 59 79);
  --primary-color-opacity-10: rgba(43, 59, 79, 0.1);
  --primary-color-opacity-25: rgba(43, 59, 79, 0.25);

  /* Slightly lighter slate for hover/focus on primary controls */
  --primary-color-hover: rgb(55 74 98);
}