/* flow-hero backplate for deck-66 — accepted generic metallic material
   (Astra/Root approved, image-approvals.json; no people/logos/lettering).
   Scoped to the cover stage only; acts as a tasteful backplate behind the
   real 3D Autotronics artifact. Original style.css bytes preserved. */

.stage-backplate {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .58;
  filter: saturate(.92) contrast(1.05) brightness(.94);
}

/* gentle frame + edge vignette so cover labels/caption keep contrast
   and the resting frame stays composed (dark, matched to cover theme) */
.cover-stage {
  border-radius: 12px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .07);
}
.cover-stage::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(8, 9, 11, .5) 0%, rgba(8, 9, 11, .08) 26%, rgba(8, 9, 11, .05) 60%, rgba(8, 9, 11, .58) 100%),
    radial-gradient(115% 92% at 50% 44%, rgba(8, 9, 11, 0) 42%, rgba(8, 9, 11, .56) 100%);
}
#stage-canvas { z-index: 2; }
.stage-fallback { z-index: 3; }