/* ==========================================================================
   Utilities
   ========================================================================== */

/* Visually hidden but available to assistive tech */
.u-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;
}

/* Skip link — appears on keyboard focus */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: calc(var(--z-header) + 1);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--clr-primary-deep);
  color: var(--clr-white);
  font-weight: var(--fw-semibold);
  font-size: 0.875rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--transition);
}

.skip-link:focus-visible {
  top: 0;
}