/* Reuse the existing .about-brain-video sizing at every portfolio breakpoint. */
#about-me .about-brain-visual .about-brain-video.about-brain-stage {
  position: relative;
  aspect-ratio: 1 / 1;
  isolation: isolate;
  pointer-events: auto;
  touch-action: auto;
}

.about-brain-stage .about-brain-poster,
.about-brain-stage .about-brain-fallback,
.about-brain-stage .about-brain-canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  pointer-events: none;
}

.about-brain-stage .about-brain-canvas,
.about-brain-stage .about-brain-fallback {
  visibility: hidden;
}

.about-brain-stage.is-interactive .about-brain-canvas,
.about-brain-stage.is-video-playing .about-brain-fallback {
  visibility: visible;
}

.about-brain-stage.is-interactive .about-brain-poster,
.about-brain-stage.is-video-playing .about-brain-poster {
  visibility: hidden;
}

.about-brain-stage::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 28.9%;
  top: 83.3%;
  width: 42.2%;
  height: 6.4%;
  border-radius: 50%;
  background: rgba(var(--brain-shadow-color, 55, 125, 220), var(--brain-shadow-alpha, .165));
  filter: blur(18px);
  opacity: 0;
  transition: opacity 1.2s ease;
  pointer-events: none;
}

.about-brain-stage.is-interactive::before {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .about-brain-stage::before {
    transition: none;
  }
}