/* BKK desktop navbar momentum: nav exits right while the brand moves to centre. */
@media (min-width: 821px) {
  .site-header .header-inner {
    position: relative;
    justify-content: flex-end;
  }

  .site-header .brand {
    position: absolute;
    left: 0;
    top: 50%;
    margin: 0;
    z-index: 2;
    transform: translateY(-50%);
    transition:
      left 900ms cubic-bezier(.65, 0, .35, 1),
      transform 900ms cubic-bezier(.65, 0, .35, 1);
    will-change: left, transform;
  }

  .site-header .primary-navigation {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    transition:
      opacity 650ms ease-in-out,
      transform 800ms cubic-bezier(.65, 0, .35, 1),
      visibility 0s linear 0s;
    will-change: opacity, transform;
  }

  /* Scroll down: keep the wordmark centred while the controls leave to the right. */
  .site-header.is-nav-centered .brand {
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .site-header.is-nav-centered .primary-navigation {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(52px);
    transition:
      opacity 650ms ease-in-out,
      transform 800ms cubic-bezier(.65, 0, .35, 1),
      visibility 0s linear 800ms;
  }
}

/* The existing mobile drawer remains unchanged and always accessible. */
@media (min-width: 821px) and (prefers-reduced-motion: reduce) {
  .site-header .brand,
  .site-header .primary-navigation {
    transition: none !important;
    will-change: auto !important;
  }
}