.page-transition {
  position: fixed;
  inset: 0;
  z-index: 260;
  pointer-events: none;
  opacity: 0;
  background: #000;
  transition: opacity 380ms cubic-bezier(0.22, 0.88, 0.24, 1);
  will-change: opacity;
}

body.is-route-leaving .page-transition {
  opacity: 1;
}

.route-swipe-surface {
  will-change: opacity;
}

.page-progress {
  --page-progress: 0;
  --page-progress-vis: 0;
  position: fixed;
  top: 50%;
  right: max(12px, env(safe-area-inset-right, 0px));
  z-index: 90;
  width: 16px;
  height: min(34svh, 260px);
  transform: translateY(-50%);
  pointer-events: none;
  opacity: calc(0.66 * var(--page-progress-vis));
  transition: opacity 520ms cubic-bezier(0.22, 0.88, 0.24, 1);
}

.page-progress[data-idle="true"] {
  opacity: 0;
}

body.video-open .page-progress {
  opacity: 0;
}

.page-progress-track {
  position: absolute;
  top: 0;
  right: 7px;
  bottom: 0;
  width: 1px;
  overflow: hidden;
  background: rgba(244, 244, 241, 0.15);
  box-shadow: 0 0 24px rgba(244, 244, 241, 0.06);
}

.page-progress-fill {
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  transform: scaleY(var(--page-progress));
  transform-origin: top center;
  background: linear-gradient(
    180deg,
    rgba(244, 244, 241, 0.24),
    rgba(244, 244, 241, 0.96),
    rgba(136, 174, 252, 0.62)
  );
}

.page-progress-dot {
  position: absolute;
  top: calc(var(--page-progress) * 100%);
  right: 4px;
  width: 7px;
  height: 7px;
  border: 1px solid rgba(244, 244, 241, 0.78);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.72);
  box-shadow: 0 0 18px rgba(244, 244, 241, 0.2);
  transform: translateY(-50%);
}

@media (prefers-reduced-motion: reduce) {
  .page-transition {
    transition-duration: 1ms !important;
  }
}

@media (max-width: 640px) {
  .page-progress {
    right: max(8px, env(safe-area-inset-right, 0px));
    height: min(28svh, 190px);
    opacity: calc(0.48 * var(--page-progress-vis));
  }
}