.scanlines {
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9998;
}

.flicker {
  animation: scanline-flicker 0.1s infinite;
}

@keyframes scanline-flicker {
  0%, 100% { opacity: 0.1; }
  50% { opacity: 0.15; }
}