switch 拟物化设计

:root {
	--bg: hsl(60, 1%, 84%);
	--gradient-start: hsl(40, 8%, 64%);
	--ease: linear(
    0, 0.0036 9.62%, 0.0185 16.66%,
    0.0489 23.03%, 0.0962 28.86%,
    0.1705 34.93%, 0.269 40.66%,
    0.3867 45.89%, 0.5833 52.95%,
    0.683 57.05%, 0.7829 62.14%,
    0.8621 67.46%, 0.8991 70.68%,
    0.9299 74.03%, 0.9545 77.52%,
    0.9735 81.21%, 0.9865 85%,
    0.9949 89.15%, 1
  );
}

*,
*:after,
*:before {
	box-sizing: border-box;
}

img {
	position: fixed;
	top: 50%;
	left: 50%;
	translate: -100% calc(-50% + 10px);
	z-index: 2;
}

body {
	display: grid;
	place-items: center;
	justify-content: center;
	grid-template-columns: 150px 150px;
	min-height: 100vh;
	background: var(--bg);
	font-family:  "SF Pro Text", "SF Pro Icons", "AOS Icons", "Helvetica Neue", Helvetica, Arial, sans-serif, system-ui;
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border-width: 0;
}

.switch {
	width: 28px;
	height: 134px;
	background: red;
	border-radius: 6px;
	border: 4px solid transparent;
	background: linear-gradient(black, black) padding-box, linear-gradient(var(--gradient-start), white) border-box;
	position: relative;
	container-type: size;
}

.switch::before,
.switch::after {
	content: "0";
	color: hsl(0 0% 8%);
	position: absolute;
	top: 10cqh;
	left: 50%;
	font-size: 1.5rem;
	translate: -500% 0;
	text-shadow: 0 2px white;
}

.switch::after {
	content: "1";
	top: 70cqh;
}

.switch label {
	position: absolute;
	inset: 0;
	cursor: pointer;
}

.switch label::after {
	content: "";
	position: absolute;
	top: 6cqh;
	left: 50%;
	translate: -50% 0;
	width: 56px;
	height: 28px;
	background:
		/*	Top of switch	*/
		linear-gradient(hsl(48, 36%, 96%), hsl(48, 37%, 80%)) 0 0 / 100% 10px no-repeat,
		linear-gradient(hsl(45, 31%, 93%), hsl(45, 31%, 93%)) 0 10px / 100% 10px no-repeat,
		linear-gradient(hsl(55, 10%, 46%), hsl(55, 10%, 66%)) 0 20px / 100% 10px no-repeat,
		hsl(55, 10%, 66%);
	border-radius: 2px;
	box-shadow: 0 8px 8px -2px black;
}

@media(prefers-reduced-motion: no-preference) {
  .switch--lg label > span:first-of-type::before,
  .switch--lg label > span:first-of-type::after,
	.switch--lg label > span:first-of-type,
	.switch label::after {
		transition: translate 0.25s var(--ease);
	}
}

:checked + label::after {
	translate: -50% calc(88cqh - 100%);
}

.switch:has(input:focus-visible) {
	outline: 2px solid var(--gradient-start);
	outline-offset: 2px;
}

.switch--lg {
	width: 44px;
	height: 158px;
	border-width: 8px;
	border-radius: 8px;
}

.switch--lg label {
/*	mask: linear-gradient(transparent, white, transparent);*/
	background:
		linear-gradient(black, transparent 22px calc(100% - 22px), black) 50% 50% / 100% 100% no-repeat,
		linear-gradient(hsl(0 0% 0% / 0.5), transparent, hsl(0 0% 0% / 0.5)) 50% 50% / 14px 100% no-repeat,
		linear-gradient(hsl(0, 0%, 51%), hsl(0, 0%, 51%)) 50% 50% / 18px 100% no-repeat;
}
.switch--lg::before {
	top: 0;
}
.switch--lg::after {
	top: 76cqh;
}

.switch--lg label::after {
	display: none;
}

.switch--lg :checked + label > span:first-of-type {
	translate: -50% calc(110cqh - 100%);
}

.switch--lg label > span:first-of-type {
  overflow: hidden;
	height: 100px;
	width: 56px;
	background:
		linear-gradient(90deg, transparent, hsl(0 0% 100% / 0.35) 35%, transparent)
		hsl(0 0% 4%);
	border-radius: 100px;
	display: inline-block;
	position: absolute;
	left: 50%;
	translate: -50% -12cqh;
	border: 2px solid hsl(0 0% 0%);
	box-shadow: 0 30px 20px -8px hsl(0 0% 0% / 0.5);
}

.switch--lg label > span:first-of-type::after {
	content: "";
	position: absolute;
	bottom: 0;
	border-radius: 100%;
	width: 100%;
	aspect-ratio: 1 / 0.85;
	background:
		radial-gradient(circle at 50% 100%, hsl(0 0% 100% / 0.25), transparent 50%),
		linear-gradient(hsl(0 0% 2%), hsl(0 0% 40%)),
		hsl(0 0% 8%);
	box-shadow:
		0 -2px hsl(0 0% 0% / 0.25),
		0 4px hsl(0 0% 100% / 0.35) inset;
  translate: 0 0;
}

.switch--lg :checked + label > span:first-of-type::before {
  translate: 0 0;
}
.switch--lg :checked + label > span:first-of-type::after {
  translate: 0 calc(100% + 4px);
}

.switch--lg label > span:first-of-type::before {
	content: "";
	position: absolute;
	top: 0;
  rotate: 0deg;
  translate: 0 calc(-100% - 4px);
	border-radius: 100%;
	width: 100%;
	aspect-ratio: 1 / 0.85;
	background:
		radial-gradient(circle at 50% 0%, hsl(0 0% 100% / 0.25), transparent 50%),
		linear-gradient(hsl(0 0% 40%), hsl(0 0% 2%)),
		hsl(0 0% 8%);
	box-shadow:
		0 2px hsl(0 0% 0% / 0.25),
		0 -4px hsl(0 0% 100% / 0.15) inset;
}