/* SKPC: unobtrusive full-page navigation feedback, 2026-10-08.
   Header and footer remain uncovered; content width and site layout unchanged. */
:root {
  --skpc-transition-top: var(--skpc-header-height, 80px);
  --skpc-transition-bottom: 54px;
}

#skpc-page-transition {
  position: fixed;
  top: var(--skpc-transition-top);
  right: 0;
  bottom: var(--skpc-transition-bottom);
  left: 0;
  z-index: 890; /* header: 1000; footer: 900 */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(6, 18, 33, .56);
  -webkit-backdrop-filter: blur(1.5px);
  backdrop-filter: blur(1.5px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .18s ease, visibility .18s ease;
}
body.skpc-page-loading #skpc-page-transition {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
#skpc-page-transition .skpc-transition-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  min-width: 170px;
  padding: 19px 25px;
  border: 1px solid rgba(125, 190, 235, .27);
  border-radius: 13px;
  background: rgba(10, 29, 49, .83);
  box-shadow: 0 18px 48px rgba(0, 0, 0, .24);
  color: #cde5f6;
  font: 14px/1.35 Play, Arial, sans-serif;
  letter-spacing: .02em;
  text-align: center;
}
#skpc-page-transition .skpc-transition-spinner {
  width: 34px;
  height: 34px;
  border: 3px solid rgba(102, 196, 255, .20);
  border-top-color: #6ec9ff;
  border-right-color: rgba(110, 201, 255, .75);
  border-radius: 50%;
  animation: skpc-transition-spin .75s linear infinite;
}
#skpc-page-progress {
  position: fixed;
  top: calc(var(--skpc-transition-top) - 3px);
  left: 0;
  right: 0;
  z-index: 1100;
  height: 3px;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background: rgba(59, 152, 219, .12);
  transition: opacity .12s ease, visibility .12s ease;
}
body.skpc-page-loading #skpc-page-progress { opacity: 1; visibility: visible; }
#skpc-page-progress::before {
  content: "";
  position: absolute;
  left: -42%;
  top: 0;
  width: 42%;
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, transparent 0%, #3fa9f0 40%, #90e8ff 72%, transparent 100%);
  box-shadow: 0 0 8px rgba(91, 195, 255, .38);
  animation: skpc-transition-progress 1.15s ease-in-out infinite;
}
@keyframes skpc-transition-spin { to { transform: rotate(360deg); } }
@keyframes skpc-transition-progress { to { left: 100%; } }

@media (prefers-reduced-motion: reduce) {
  #skpc-page-transition, #skpc-page-progress { transition: none; }
  #skpc-page-transition .skpc-transition-spinner,
  #skpc-page-progress::before { animation: none; }
  #skpc-page-progress::before { left: 0; }
}