/* Shared keyboard focus ring for the themed buttons.
 *
 * The variant core/css/base.css sheets used to set outline: none on
 * .theme-button with no replacement, which left keyboard users without a
 * visible indicator on every themed button. This rule restores one, in the
 * shared tree so each association gets the same behaviour from one place.
 * --linkColorLight is the palette accent used for focus rings elsewhere in the
 * tree; the currentColor fallback covers any palette that does not define it.
 */
.theme-button:focus-visible {
  outline: 2px solid var(--linkColorLight, currentColor);
  outline-offset: 2px;
}