Neon Tube Sign

"use client";

import { useEffect, useId, useRef, useState } from "react";

/**
 * A neon sign on a wall: outlined glass tubes with a hot core and a bloom,
 * light spilling onto the wall behind, one failing tube that stutters now and
 * then — and it can be switched off, when the glass stays faintly visible.
 *
 * NEON LIGHTS THE WALL, NOT JUST ITSELF. Glowing text on black is the cheap
 * version. What makes a sign read as a physical object is the spill: a broad
 * pool of the tube's colour screened over the wall texture, dipping whenever
 * the tube does. Without it the letters float.
 *
 * THE TUBE IS THREE STROKES AND ONE FILTER. A coloured stroke, a thin
 * near-white core on top of it (lit neon is hottest in the middle), and one
 * static filter merging three blur radii for the bloom. Flicker animates only
 * OPACITY — of the failing letter and of the spill — so the filtered graphic

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}