<label class="switch">
	<input class="switch__input" type="checkbox" role="switch">
	<svg class="switch__icon switch__icon--light" viewBox="0 0 12 12" width="12px" height="12px" aria-hidden="true">
		<g fill="none" stroke="#fff" stroke-width="1" stroke-linecap="round">
			<circle cx="6" cy="6" r="2" />
			<g stroke-dasharray="1.5 1.5">
				<polyline points="6 10,6 11.5" transform="rotate(0,6,6)" />
				<polyline points="6 10,6 11.5" transform="rotate(45,6,6)" />
				<polyline points="6 10,6 11.5" transform="rotate(90,6,6)" />
				<polyline points="6 10,6 11.5" transform="rotate(135,6,6)" />
				<polyline points="6 10,6 11.5" transform="rotate(180,6,6)" />
				<polyline points="6 10,6 11.5" transform="rotate(225,6,6)" />
				<polyline points="6 10,6 11.5" transform="rotate(270,6,6)" />
				<polyline points="6 10,6 11.5" transform="rotate(315,6,6)" />
			</g>
		</g>
	</svg>
	<svg class="switch__icon switch__icon--dark" viewBox="0 0 12 12" width="12px" height="12px" aria-hidden="true">
		<g fill="none" stroke="#fff" stroke-width="1" stroke-linejoin="round" transform="rotate(-45,6,6)">
			<path d="m9,10c-2.209,0-4-1.791-4-4s1.791-4,4-4c.304,0,.598.041.883.105-.995-.992-2.367-1.605-3.883-1.605C2.962.5.5,2.962.5,6s2.462,5.5,5.5,5.5c1.516,0,2.888-.613,3.883-1.605-.285.064-.578.105-.883.105Z"/>
		</g>	
	</svg>
	<span class="switch__sr">Dark Mode</span>
</label>

* {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
:root {
	--hue: 223;
	--bg: hsl(var(--hue),10%,90%);
	--fg: hsl(var(--hue),10%,10%);
	--primary: hsl(var(--hue),90%,50%);
	--trans-dur: 0.3s;
	--trans-timing: cubic-bezier(0.76,0.05,0.24,0.95);
	--trans-timing-in: cubic-bezier(0.76,0.05,0.86,0.06);
	--trans-timing-out: cubic-bezier(0.05,0.76,0.06,0.86);
	font-size: calc(40px + (80 - 40) * (100vw - 320px) / (2560 - 320));
}
body,
input {
	color: var(--fg);
	font: 1em/1.5 sans-serif;
}
body {
	background-color: var(--bg);
	display: flex;
	height: 100vh;
	transition:
		background-color var(--trans-dur),
		color var(--trans-dur);
}
body:has(.switch__input:checked) {
	background-color: var(--fg);
	color: var(--bg);
}
.switch {
	margin: auto;
	position: relative;
}
.switch__icon,
.switch__input {
	display: block;
}
.switch__icon {
	position: absolute;
	top: 0.375em;
	right: 0.375em;
	width: 0.75em;
	height: 0.75em;
	transition:
		opacity calc(var(--trans-dur) / 2),
		transform calc(var(--trans-dur) / 2);
}
.switch__icon polyline {
	transition: stroke-dashoffset calc(var(--trans-dur) / 2);
}
.switch__icon--light,
.switch__icon--light polyline {
	transition-delay: calc(var(--trans-dur) / 2);
	transition-timing-function: var(--trans-timing-out);
}
.switch__icon--dark {
	opacity: 0;
	transform: translateX(-0.75em) rotate(30deg) scale(0.75);
	transition-timing-function: var(--trans-timing-in);
}
.switch__input {
	background-color: hsl(210,90%,70%);
	border-radius: 0.75em;
	box-shadow:
		0 0 0 0.125em hsla(var(--hue),90%,50%,0),
		0.125em 0.125em 0.25em hsla(var(--hue),90%,10%,0.2);
	outline: transparent;
	position: relative;
	width: 3em;
	height: 1.5em;
	-webkit-appearance: none;
	appearance: none;
	-webkit-tap-highlight-color: transparent;
	transition:
		background-color var(--trans-dur) var(--trans-timing),
		box-shadow 0.15s linear;
}
.switch__input:focus-visible {
	box-shadow:
		0 0 0 0.125em hsl(var(--hue),90%,50%),
		0.125em 0.125em 0.25em hsla(var(--hue),90%,10%,0.2);
}
.switch__input:before,
.switch__input:after {
	content: "";
	display: block;
	position: absolute;
}
.switch__input:before {
	background-color: hsl(50,90%,50%);
	border-radius: inherit;
	mask-image: linear-gradient(120deg,hsl(0,0%,0%) 20%,hsla(0,0%,0%,0) 80%);
	-webkit-mask-image: linear-gradient(120deg,hsl(0,0%,0%) 20%,hsla(0,0%,0%,0) 80%);
	inset: 0;
	transition: background-color var(--trans-dur) var(--trans-timing);
}
.switch__input:after {
	background-color: hsl(0,0%,100%);
	border-radius: 50%;
	box-shadow: 0.05em 0.05em 0.05em hsla(var(--hue),90%,10%,0.1);
	top: 0.125em;
	left: 0.125em;
	width: 1.25em;
	height: 1.25em;
	transition:
		background-color var(--trans-dur) var(--trans-timing),
		transform var(--trans-dur) var(--trans-timing);
	z-index: 1;
}
.switch__input:checked {
	background-color: hsl(290,90%,40%);
}
.switch__input:checked:before {
	background-color: hsl(220,90%,40%);
}
.switch__input:checked:after {
	background-color: hsl(0,0%,0%);
	transform: translateX(1.5em);
}
.switch__input:checked ~ .switch__icon--light,
.switch__input:checked ~ .switch__icon--light polyline {
	transition-delay: 0s;
	transition-timing-function: var(--trans-timing-in);
}
.switch__input:checked ~ .switch__icon--light {
	opacity: 0;
	transform: translateX(-0.75em) rotate(-30deg) scale(0.75);
}
.switch__input:checked ~ .switch__icon--light polyline {
	stroke-dashoffset: 1.5;
}
.switch__input:checked ~ .switch__icon--dark {
	opacity: 1;
	transform: translateX(-1.5em);
	transition-delay: calc(var(--trans-dur) / 2);
	transition-timing-function: var(--trans-timing-out);
}
.switch__sr {
	overflow: hidden;
	position: absolute;
	width: 1px;
	height: 1px;
}