:root {
	color-scheme: light;
	font-family: system-ui, sans-serif;
	font-synthesis: none;
	text-rendering: optimizeLegibility;
	--ink: #111;
	--paper: #fff;
}

* { box-sizing: border-box; }

html, body { min-width: 320px; min-height: 100%; }

body {
	min-height: 100vh;
	min-height: 100svh;
	margin: 0;
	color: var(--ink);
	background: var(--paper);
}

button, a { font: inherit; }

.stage {
	position: relative;
	min-height: 100vh;
	min-height: 100svh;
	display: grid;
	place-items: center;
	padding: 24px;
}

.artwork {
	width: min(650px, calc(100vw - 48px));
	height: auto;
	display: block;
	image-rendering: pixelated;
	animation: slow-drift 56s ease-in-out infinite;
	translate: var(--retreat-x, 0px) var(--retreat-y, 0px);
	transition: translate 2600ms ease-out;
}

.sound-button {
	position: absolute;
	bottom: max(20px, env(safe-area-inset-bottom));
	left: 50%;
	width: 44px;
	height: 44px;
	padding: 0;
	transform: translateX(-50%);
	border: 1px solid var(--ink);
	display: grid;
	place-items: center;
	color: var(--ink);
	background: var(--paper);
	cursor: pointer;
	transition: color 140ms ease, background-color 140ms ease;
}

.sound-button:hover {
	color: var(--paper);
	background: var(--ink);
}

.sound-button:focus-visible {
	outline: 2px solid var(--ink);
	outline-offset: 4px;
}

.sound-button svg {
	width: 18px;
	height: 18px;
	display: block;
	fill: currentColor;
}

.icon-pause,
.sound-button[aria-pressed='true'] .icon-play { display: none; }

.sound-button[aria-pressed='true'] .icon-pause { display: block; }

.skip-link, .visually-hidden {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	clip-path: inset(50%);
	border: 0;
}

.skip-link:focus {
	position: fixed;
	top: 12px;
	left: 12px;
	z-index: 2;
	width: auto;
	height: auto;
	padding: 10px 14px;
	margin: 0;
	clip: auto;
	clip-path: none;
	color: var(--ink);
	background: var(--paper);
	outline: 2px solid var(--ink);
}

@keyframes slow-drift {
	0%, 100% { transform: translate(0, 0); }
	25% { transform: translate(12px, -7px); }
	50% { transform: translate(-9px, 7px); }
	75% { transform: translate(-7px, -10px); }
}

@media (prefers-reduced-motion: reduce) {
	.artwork { animation: none; translate: none; transition: none; }
	.sound-button { transition: none; }
}