/* ==========================================================================
   overlay.css
   - Overlay Shell
   - No-script fallback nav
   - Canvas Freeze / UI hide when overlay open
   ========================================================================== */

/* No-JS fallback nav (sichtbar) */
.noscript-nav{
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 9999;
  background: rgba(0,0,0,0.65);
  padding: 10px 12px;
  border-radius: 10px;
}
.noscript-nav a{ color:#fff; text-decoration:none; }

/* Overlay */
.page-overlay{
  position: fixed;
  inset: 0;
  z-index: 10000;
}

.page-overlay,
.page-overlay *{
  touch-action: manipulation;
}

.page-overlay[hidden]{ display:none; }

.page-overlay__scrim{
  position:absolute;
  inset:0;
  background: transparent;
  z-index: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.page-overlay__content{
  position: relative;
  width: 100%;
  height: 100%;
  overflow: auto; 
  z-index: 1;
  overflow-y: auto;
}

/* verhindert “Layout-Jump” durch Scrollbar an/aus */
@supports (scrollbar-gutter: stable){
  .page-overlay__content{
    scrollbar-gutter: stable;
  }
}

/* Fallback für Browser ohne scrollbar-gutter:
   erzwingt immer eine Scrollbar (stabiler, aber sichtbar) */
@supports not (scrollbar-gutter: stable){
  .page-overlay__content{
    overflow-y: scroll;
  }
}

/* 3D als „Background“ */
body.is-page-open canvas{
  pointer-events: none;
  transition: filter 700ms ease, opacity 700ms ease;
}

/* optional: UI ausblenden während Overlay offen */
body.is-page-open .pan-btn{ display:none; }

/* Optional: Transition overlay (falls du ihn später nutzt) */
.transition-overlay{
  position: fixed;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  background: #000;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  z-index: 9999;
}