/**
 * Page transition: single full-viewport panel slides up (no stripes / hairlines).
 * Enter: main fades up slightly on load.
 */

:root {
  --pt-curtain-ease: cubic-bezier(0.76, 0, 0.24, 1);
  --pt-reveal-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --pt-curtain-ms: 0.4s;
  --pt-reveal-ms: 0.4s;
}

@keyframes imtheo-page-in {
  from {
    opacity: 0;
    transform: translate3d(0, 16px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

html[data-page-transition='1'] main,
html[data-page-transition='1'] main.hero {
  animation: imtheo-page-in var(--pt-reveal-ms) var(--pt-reveal-ease) both;
}

#page-transition-overlay {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  pointer-events: none;
  visibility: hidden;
  contain: strict;
}

#page-transition-overlay.is-visible {
  visibility: visible;
  pointer-events: auto;
}

#page-transition-overlay .page-transition__curtain {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  background: var(--bg, #171717);
  transform: translate3d(0, 100%, 0);
  transition: transform var(--pt-curtain-ms) var(--pt-curtain-ease);
  will-change: transform;
  backface-visibility: hidden;
}

#page-transition-overlay.is-visible .page-transition__curtain {
  transform: translate3d(0, 0, 0);
}

@media (prefers-reduced-motion: reduce) {
  #page-transition-overlay .page-transition__curtain {
    transition: none !important;
    transform: translate3d(0, 0, 0) !important;
  }

  html[data-page-transition='1'] main,
  html[data-page-transition='1'] main.hero {
    animation: none !important;
  }
}