/* D13-18b (T-488): subtle scroll-affordance chevrons — absolute overlay pinned to scroll edges */
.nav-cue-shell{ position:relative; }
.nav-scroll-cue{
  position:absolute;
  left:0; right:0;
  height:22px;
  display:flex; align-items:center; justify-content:center;
  pointer-events:none;
  color:var(--sidebar-foreground, #cbd5e1);
  opacity:0;
  transition:opacity .22s ease;
  z-index:6;
}
.nav-scroll-cue svg{ opacity:.5; filter:drop-shadow(0 0 2px rgba(0,0,0,.4)); }
/* top cue pinned to the TOP edge of the scroll viewport, soft fade behind it */
.nav-scroll-cue-top{
  top:0;
  background:linear-gradient(to bottom, var(--sidebar, #0f1424) 35%, transparent);
}
/* bottom cue pinned to the BOTTOM edge */
.nav-scroll-cue-bot{
  bottom:0;
  background:linear-gradient(to top, var(--sidebar, #0f1424) 35%, transparent);
}