/**
 * Phase B loading shell — layout-stable skeletons, low-GPU shimmer.
 */
.po-page-shell {
  min-height: 100vh;
}

html.po-nav-active,
html.po-nav-active body {
  background-color: #fafcf9;
}

.po-page-shell.is-nav-pending main,
.po-page-shell.is-nav-pending .site-main {
  pointer-events: none;
}

.po-loading-overlay:not(.is-active) {
  pointer-events: none !important;
}

.po-loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 12000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: #fafcf9;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.32s cubic-bezier(0.22, 0.61, 0.36, 1),
    visibility 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.po-loading-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.po-loading-card {
  width: min(22rem, 100%);
  min-height: 7.5rem;
  padding: 1.25rem 1.35rem;
  border-radius: 1rem;
  border: 1px solid rgba(8, 39, 23, 0.08);
  background: #fff;
  box-shadow: 0 8px 28px -18px rgba(8, 39, 23, 0.2);
}

.po-loading-card__title {
  margin: 0 0 0.85rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #082717;
  letter-spacing: 0.02em;
}

.po-skeleton-line {
  display: block;
  height: 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.55rem;
  background: #e8ece9;
  contain: strict;
}

.po-skeleton-line--hero {
  height: 1.1rem;
  width: 92%;
}

.po-skeleton-line--short {
  width: 62%;
}

.po-skeleton-line--medium {
  width: 82%;
}

.po-loading-overlay.is-active .po-skeleton-line {
  background: linear-gradient(90deg, #e8ece9 0%, #f4f6f4 50%, #e8ece9 100%);
  background-size: 200% 100%;
  animation: po-skeleton-shimmer 1.45s ease-in-out infinite;
}

.po-skeleton-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.35rem;
}

.po-skeleton-grid span {
  display: block;
  height: 3.5rem;
  border-radius: 0.65rem;
  background: #e8ece9;
}

.po-loading-overlay.is-active .po-skeleton-grid span {
  background: linear-gradient(90deg, #e8ece9 0%, #f4f6f4 50%, #e8ece9 100%);
  background-size: 200% 100%;
  animation: po-skeleton-shimmer 1.45s ease-in-out infinite;
}

@keyframes po-skeleton-shimmer {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

@supports (view-transition-name: root) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 0.2s;
  }
}

@media (prefers-reduced-motion: reduce) {
  .po-loading-overlay {
    transition: none;
  }

  .po-skeleton-line,
  .po-skeleton-grid span {
    animation: none !important;
    background: #e8ece9 !important;
  }
}