:root {
  --channel-filter: none;
  --channel-overlay: rgba(0, 0, 0, 0);
}

/*
Channel easter-egg is temporarily disabled while debugging.
Alpha mode was an idea, but is intentionally removed for now.

To re-enable RGB channels later, uncomment and tune this block:

html.channel-on {
  filter: var(--channel-filter);
}

html.channel-on::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999999;
  background: var(--channel-overlay);
  mix-blend-mode: screen;
  opacity: 0;
}

html.channel-r {
  --channel-filter: url(#chanR);
}

html.channel-g {
  --channel-filter: url(#chanG);
}

html.channel-b {
  --channel-filter: url(#chanB);
}

@media (prefers-reduced-motion: no-preference) {
  html.channel-on {
    transition: filter 120ms ease-out;
  }
  html.channel-on::before {
    transition: opacity 120ms ease-out;
  }
}
*/

/* Hard-disable safeguard even if classes are present. */
html.channel-on {
  filter: none !important;
}

html.channel-on::before {
  content: none !important;
}