/* Smooth cross-page transitions (MPA). Honors prefers-reduced-motion. */

@view-transition {
  navigation: auto;
}

@media (prefers-reduced-motion: no-preference) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 0.28s;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
  }

  ::view-transition-old(root) {
    animation-name: pt-fade-out;
  }

  ::view-transition-new(root) {
    animation-name: pt-fade-in;
  }

  @keyframes pt-fade-out {
    to {
      opacity: 0;
    }
  }

  @keyframes pt-fade-in {
    from {
      opacity: 0;
    }
  }

  /* Fallback when View Transitions API / cross-document navigation is unavailable */
  html.page-enter body {
    opacity: 0;
  }

  html.page-ready body {
    opacity: 1;
    transition: opacity 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  }

  /* If JS fails to load, do not leave the page invisible */
  html.page-enter:not(.page-ready):not(.page-leaving) body {
    animation: pt-enter-fallback 0.28s 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  }

  @keyframes pt-enter-fallback {
    to {
      opacity: 1;
    }
  }

  html.page-leaving body {
    opacity: 0;
    transition: opacity 0.22s cubic-bezier(0.22, 1, 0.36, 1);
  }
}

@media (prefers-reduced-motion: reduce) {
  html.page-enter body,
  html.page-leaving body {
    opacity: 1;
  }
}