/* --------------------------------------------------------------- fungus -- */

/* Foxfire on the page's edge: the source of each night chapter's colony.
   Placed and sized by src/systems/nightFungus.js; drawn growing out of the
   left edge, and mirrored where the colony is on the right. */
.night-fungus {
    position: absolute;
    left: 0;
    z-index: 1;
    pointer-events: none;
    /* Warm-dark caps, bark-brown, not the grey of a flat fill. */
    --fungus-cap: color-mix(in oklab, var(--copper) 16%, var(--night-floor));
    --fungus-cap-lit: color-mix(in oklab, var(--copper) 22%, var(--night-mid));
    --fungus-band: color-mix(in oklab, var(--copper) 40%, var(--night-mid));
    --fungus-bark: color-mix(in oklab, var(--night-floor) 70%, #000);
    --fungus-lit: color-mix(in oklab, var(--sage) 72%, #d8f0b8);
    --fungus-moss: color-mix(in oklab, var(--sage) 30%, var(--night-mid));
}

.night-fungus.is-right {
    left: auto;
    right: 0;
    transform: scaleX(-1);
}

.night-fungus .fungus-svg {
    display: block;
    overflow: visible;
}

/* The gills breathe, slowly, the way foxfire is said to: a light that is
   alive rather than switched on. */
@media (prefers-reduced-motion: no-preference) {
    .night-fungus .fungus-svg {
        animation: foxfire 9s ease-in-out infinite alternate;
    }
}

@keyframes foxfire {
    from { opacity: 0.82; }
    to { opacity: 1; }
}