:root {
  /*
   * Not great that these are in px, but not sure what else to do.
   */
  --app-bar-height: 48px;
  --input-row-height: 2rem;
  --interface-padding: 16px;
  --nav-width: 21rem;

  /* coloUrs */
  --colour-okay: #6a994e;
  --colour-warn: #ebc3be;
  --colour-error: #de5f55;

  /* I dunno, I liked this colour: */
  --colour-base: rgb(121, 96, 159);

  /* Light text is a bit hard to read; I may need to adjust it. */
  --light-text: color-mix(in srgb, var(--colour-base) 40%, white);
  --dark-text: color-mix(in srgb, var(--colour-base) 40%, black);

  /* Header */
  --colour-header-bg: color-mix(in srgb, var(--colour-base) 30%, black);
  --colour-header-border: color-mix(in srgb, var(--colour-header-bg) 50%, black);
  --colour-header-text: var(--light-text);

  /* Navbar */
  --colour-navbar-bg: color-mix(in srgb, var(--colour-base) 50%, black);
  --colour-navbar-border: color-mix(in srgb, var(--colour-navbar-bg) 50%, black);
  --colour-navbar-text: var(--light-text);
  --colour-navbar-active-bg: color-mix(in srgb, var(--colour-navbar-bg) 40%, white);
  --colour-navbar-active-text: color-mix(in srgb, var(--colour-navbar-bg) 40%, black);
  --colour-navbar-hover-bg: color-mix(in srgb, var(--colour-navbar-bg) 30%, white);
  --colour-navbar-hover-text: color-mix(in srgb, var(--colour-navbar-bg) 30%, black);

  /* Input */
  --colour-input-bg: color-mix(in srgb, var(--colour-base) 10%, white);
  --colour-input-border: color-mix(in srgb, var(--colour-input-bg) 50%, black);
  --colour-input-text: var(--dark-text);

  /* Active channel */
  --colour-active-channel-bg: color-mix(in srgb, var(--colour-base) 25%, white);

  /* MessageRun */
  --colour-message-run-self-bg: color-mix(in srgb, var(--colour-base) 30%, white);
  --colour-message-run-self-border: color-mix(
    in srgb,
    var(--colour-message-run-self-bg) 50%,
    black
  );
  --colour-message-run-other-bg: color-mix(in srgb, var(--colour-base) 50%, white);
  --colour-message-run-other-border: color-mix(
    in srgb,
    var(--colour-message-run-other-bg) 50%,
    black
  );
  --colour-message-run-self-text: var(--dark-text);
  --colour-message-run-other-text: var(--dark-text);
  --colour-message-run-unsent-text: var(--light-text);

  --colour-message-run-username-bg: color-mix(in srgb, var(--colour-base) 70%, white);
  --colour-message-run-username-border: color-mix(in srgb, var(--colour-base) 50%, black);
  --colour-message-run-username-text: color-mix(in srgb, var(--colour-base) 50%, black);

  /* Message */
  --colour-message-hover-bg: color-mix(in srgb, var(--colour-base) 70%, white);
  --colour-message-hover-text: var(--dark-text);

  /* Message handle */
  --colour-message-handle-bg: color-mix(in srgb, var(--colour-base) 90%, black);
  --colour-message-handle-border: color-mix(in srgb, var(--colour-message-handle-bg) 50%, black);
  --colour-message-handle-text: var(--light-text);
}