a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: var(--md-focus-ring,2px solid var(--wp--preset--color--accent));
  outline-offset: 2px;
}

/* Screen reader only (visually hidden but focusable when active) */
.sr-only, .visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.sr-only:focus, .sr-only:active,
.visually-hidden:focus, .visually-hidden:active {
  position: static;
  width: auto; height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Skip link (appears on focus) */
.skip-link {
  position: absolute;
  top: 0; left: 0;
  transform: translateY(-120%);
  background: var(--wp--preset--color--background);
  color: var(--wp--preset--color--contrast);
  padding: 8px 12px;
  font-weight: 600;
  text-decoration: none;
  z-index: 1000;
}
.skip-link:focus {
  transform: translateY(0);
  outline: var(--md-focus-ring,2px solid var(--wp--preset--color--accent));
}

/* Utility: visually emphasize focus without outline (apply manually) */
.focus-ring {
  box-shadow: 0 0 0 2px var(--wp--preset--color--accent);
}