/* =========================================================
   Page loading / page-to-page transition animation
   Uses the site's existing VIBGYOR rainbow palette
   ========================================================= */

/* Slim rainbow progress bar across the very top of the viewport */
#page-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--rainbow);
  z-index: 100000;
  opacity: 0;
  transition: width 0.3s ease, opacity 0.2s ease;
}

#page-progress.is-active {
  opacity: 1;
}

/* Full-screen overlay shown while a page (or the next page) is loading */
#page-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cream);
  opacity: 1;
  visibility: visible;
  transition: opacity 0.35s ease, visibility 0s linear 0s;
  /* Safety net: force-hide after 3s even if JS never runs (e.g. blocked script) */
  animation: page-loader-autohide 0s linear 3s forwards;
}

#page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0s linear 0.35s;
}

@keyframes page-loader-autohide {
  to {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
}

.page-loader__ring {
  position: relative;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-loader__ring::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  padding: 4px;
  background: var(--rainbow);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: page-loader-spin 0.9s linear infinite;
}

.page-loader__mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
  animation: page-loader-pulse 1.4s ease-in-out infinite;
}

@keyframes page-loader-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes page-loader-pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(0.88);
    opacity: 0.75;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-loader__ring::before,
  .page-loader__mark {
    animation: none;
  }
  #page-loader,
  #page-progress {
    transition: none;
  }
}