<main>
	<div class="tv-body">
		<div class="screen-container">
			<canvas id="static" width="380" height="280"></canvas>
			<img id="displayed" src="" alt="Nothing" width="380" height="280">
			<div class="screen">
				<div class="screen-frame"></div>
				<div class="screen-inset"></div>
			</div>
		</div>
		<div class="logo-badge">
			<div class="logo-text">Bush</div>
		</div>
		<div class="controls">
			<div class="panel">
				<div class="screw"></div>
				<div class="dial">
					<button id="channel" class="dial-label pristine">Channel</button>
				</div>
			</div>
			<div class="vents">
				<div class="vent"></div>
				<div class="vent"></div>
				<div class="vent"></div>
				<div class="vent"></div>
				<div class="vent"></div>
				<div class="vent"></div>
			</div>
			<div class="panel">
				<div class="screw"></div>
				<div class="dial">
					<button class="dial-label" disabled>Volume</button>
				</div>
			</div>
		</div>
	</div>
	<div class="legs">
		<div class="leg"></div>
		<div class="leg"></div>
	</div>
</main>

* {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
body {
	background: #cbb;
	height: 100vh;
}
main {
	font-size: 10px;
	margin: auto;
	width: 51em;
	height: 52.5em;
}
img, canvas {
	display: block;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);
}
img {
	width: 32em;
	height: 22em;
}
body, .tv-body, .controls, .legs {
	display: flex;
}
.tv-body, .controls {
	justify-content: center;
}
.tv-body {
	background-color: #8c5b3d;
	background-image:
		radial-gradient(10em 0.4em at 8em 0.8em,#fff,#fff0),
		radial-gradient(10em 0.4em at 20em 0.8em,#fff,#fff0),
		radial-gradient(10em 0.4em at 36em 0.8em,#fff,#fff0),
		radial-gradient(14em 0.8em at 6em 2em,#fff 50%,#fff0),
		radial-gradient(55em 0.4em at 50% 2em,#fff3,#fff0),
		linear-gradient(#0000,#0004),
		radial-gradient(12em 0.4em at 32em 2em,#fff,#fff0),
		url("https://assets.codepen.io/416221/vintage-tv-texture.jpg");
	border-radius: 0.75em 0.75em 0.75em 0.75em / 3em 3em 0.75em 0.75em;
	box-shadow: 0 -1em 0.75em #ba816c7f inset;
	flex-direction: column;
	align-items: center;
	height: 51em;
}
.screen-container, .controls {
	width: 38em;
}
.screen-container {
	background-color: #bcb;
	margin: 3em 0 0 0;
	overflow: hidden;
	position: relative;
	height: 28em;
}
.screen, .screen-inset, .screen-frame, canvas, img {
	position: absolute;
}
.screen, .screen-inset {
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}
.screen {
	background-image:
		radial-gradient(1em 1em at 22% 19%,#fff 25%,#fff0),
		radial-gradient(4em 1.5em at 35% 17%,#fff 35%,#fff0),
		radial-gradient(1em 1em at 82% 24%,#fff 25%,#fff0),
		radial-gradient(100% 175% at 50% 50%,#0000 32%,#000 60%),
		radial-gradient(175% 100% at 50% 53%,#0000 32%,#000 60%);
}
.screen-inset {
	box-shadow: 0 -0.1em 0.1em 0.6em #3a1415 inset;
}
.screen-frame {
	border-top: 8em solid #7b807d;
	border-right: 8em solid #9da28f;
	border-bottom: 8em solid #b0b5a0;
	border-left: 8em solid #8c917e;
	border-radius: 16em;
	box-shadow: 0 0.1em 0.2em 0.2em #0007 inset;
	top: 50%;
	left: 50%;
	width: calc(100% + 9.5em);
	height: calc(100% + 10em);
	transform: translate(-50%,-50%);
}
.logo-badge, .logo-badge:before, .logo-badge:after {
	background: #401f25;
}
.logo-badge, .dial-label {
	-moz-user-select: none;
	-webkit-user-select: none;
	-ms-user-select: none;
	user-select: none;
}
.logo-badge {
	border-radius: 0.25em;
	box-shadow:
		0 0.2em 0.2em #fff4 inset,
		0 -0.2em 0.2em #0004 inset;
	color: #aa5;
	cursor: default;
	font: 1.5em Playball, cursive;
	line-height: 1.5;
	margin: 0.4em 0;
	position: relative;
	text-align: center;
	width: 2.4em;
	height: 1.5em;
}
.logo-badge:before, .logo-badge:after {
	content: "";
	display: block;
	position: absolute;
	top: 0.2em;
	width: 1.2em;
	height: 1em;
}
.logo-badge:before {
	border-radius: 50% 0 0 50%;
	box-shadow:
		0.1em 0.1em 0.2em #fff4 inset,
		0.1em -0.1em 0.2em #0004 inset;
	right: 95%;
}
.logo-badge:after {
	border-radius: 0 50% 50% 0;
	box-shadow:
		-0.1em 0.1em 0.2em #fff4 inset,
		-0.1em -0.1em 0.2em #0004 inset;
	left: 95%;
}
.logo-text {
	transform: scaleX(0.75);
}
.controls {
	background-color: currentColor;
	border-radius: 1.5em;
	box-shadow:
		0 0.3em 0.5em 0.5em #0007,
		0 0 0.5em 0.4em inset,
		0 -0.1em 0.3em 0.3em #fffc inset,
		0 0.1em 0.2em 1em inset,
		0 1.6em 0.4em 0 #fff4 inset,
		0 -1.3em 0.4em 0 #fff6 inset,
		0.2em 0.9em 0.25em 1.5em #0007 inset,
		0 -2.2em 0.1em #ffffff17 inset,
		0 -2.5em 0.2em #0002 inset;
	color: #401f25;
	padding-top: 2.4em;
	height: 12em;
}
.panel, .vents {
	height: 8.5em;
}
.panel {
	width: 5.5em;
}
.screw, .dial {
	border-radius: 50%;
}
.screw {
	background-color: #fff1;
	background-image: linear-gradient(#0000 38%,#0005 38%,#0005 55%,#fff3 55%,#fff3 67%,#fff0 67%);
	box-shadow: 0 0 0 0.3em #0005;
	margin: 0 auto 1em auto;
	width: 2em;
	height: 2em;
	transform: rotate(45deg);
}
.dial {
	box-shadow:
		0 0 0.2em 0.5em #0003,
		-0.2em 0.3em 0.2em 0.5em #ffffff17 inset,
		0 0 0 0.6em inset;
	margin: auto;
	position: relative;
	width: 5em;
	height: 5em;
}
.dial-label {
	background-color: transparent;
	border-radius: 50%;
	color: #994;
	cursor: pointer;
	font: bold 0.7em sans-serif;
	line-height: 5;
	position: absolute;
	bottom: 0.2em;
	left: 0.4em;
	text-align: center;
	text-shadow: 0 0.2em 0 #000;
	text-transform: uppercase;
	transition: transform 0.2s ease-in-out;
	width: 6em;
	height: 6em;
	-webkit-appearance: none;
	appearance: none;
}
.dial-label:disabled {
	cursor: not-allowed;
}
.dial-label:focus {
	outline: transparent;
}
.panel:last-child .screw {
	transform: rotate(25deg);
}
.panel:last-child .dial {
	box-shadow:
		0 0 0.2em 0.5em #0003,
		0.2em 0.3em 0.2em 0.5em #ffffff17 inset,
		0 0 0 0.6em inset;
}
.panel:last-child .dial-label {
	left: 0.8em;
}
.vents {
	width: 24em;
}
.vent {
	background-color: #fff7;
	border-radius: 0.75em;
	box-shadow:
		0 -0.7em 0.3em inset,
		0 -0.2em 0.2em #fff3,
		0 0.5em 0.3em #000c;
	margin-bottom: 0.4em;
	width: 100%;
	height: 1em;
}
.legs {
	background-color: #462b34;
	box-shadow: 0 0.5em 0.4em #462b34;
	justify-content: space-between;
	margin: auto;
	width: 49em;
	height: 1.5em;
}
.leg {
	background-color: #765c62;
	box-shadow: 0 0.4em 0.3em #0007 inset;
	width: 7em;
	height: 100%;
}
.pristine {
	animation: glow 1.5s linear infinite;
	box-shadow: 0 0 1em #ff0;
}
.hide {
	display: none;
}

@keyframes glow {
	from, to {box-shadow: 0 0 1em 0 #ff0 }
	50% { box-shadow: 0 0 3em 0 #ff0 }
}

document.addEventListener("DOMContentLoaded",tv);
function tv() {
	var cnv = document.getElementById("static"),
		c = cnv.getContext("2d"),
		cw = cnv.offsetWidth,
		ch = cnv.offsetHeight,
		staticScrn = c.createImageData(cw,ch),
		staticFPS = 30,
		isStatic = false,
		staticTO,
		gifData = [
			{
				file: "https://assets.codepen.io/416221/willie.gif",
				desc: "Steamboat Willie (Mickey Mouse) steering a ship"
			},
			{
				file: "https://assets.codepen.io/416221/skeletons.gif",
				desc: "Spooky scary skeletons sending shivers down your spine"
			},
			{
				file: "https://assets.codepen.io/416221/kingkong.gif",
				desc: "King Kong waving on Empire State Building",
			},
			{
				file: "https://assets.codepen.io/416221/tracks.gif",
				desc: "Looking at train tracks from behind a train",
			},
			{
				file: "https://assets.codepen.io/416221/nuke.gif",
				desc: "Nuclear explosion at sea",
			}
		],
		gifs = [],
		channel = 0;

	for (g in gifData) {
		gifs.push(new Image());
		gifs[g].src = gifData[g].file;
		gifs[g].alt = gifData[g].desc;
	}

	/* Static */
	var runStatic = function() {
		isStatic = true;
		c.clearRect(0,0,cw,ch);

		for (var i = 0; i < staticScrn.data.length; i += 4) {
			let shade = 127 + Math.round(Math.random() * 128);
			staticScrn.data[0 + i] = shade;
			staticScrn.data[1 + i] = shade;
			staticScrn.data[2 + i] = shade;
			staticScrn.data[3 + i] = 255;
		}
		c.putImageData(staticScrn,0,0);

		staticTO = setTimeout(runStatic,1e3/staticFPS);
	};
	runStatic();

	/* Channels */
	var changeChannel = function() {
		var displayed = document.getElementById("displayed");

		++channel;
		if (channel > gifData.length)
			channel = 1;

		this.classList.remove("pristine");
		this.style.transform = `rotate(${channel * 360/(gifData.length + 1)}deg)`;

		cnv.classList.remove("hide");
		displayed.classList.add("hide");

		if (!isStatic)
			runStatic();

		setTimeout(function(){
			cnv.classList.add("hide");
			displayed.classList.remove("hide");

			displayed.src = gifs[channel - 1].src;
			displayed.alt = gifs[channel - 1].alt;

			isStatic = false;

			clearTimeout(staticTO);
		},300);
	};
	document.getElementById("channel").addEventListener("click",changeChannel);
}