:root {
	--font-ui: system-ui, Helvetica Neue, Helvetica, Segoe UI, sans-serif;
	--font-code: ui-monospace, SFMono-Regular, Consolas, Liberation Mono, monospace;
	--hairline: hsl(220 15% 85%);
	--muted: hsl(220 10% 40%);
	--accent: oklch(55% 0.17 265);
	--panel: hsl(220 25% 98%);
}

body {
	font: 105%/1.5 var(--font-ui);
	width: 92vw;
	max-width: 76em;
	margin: 1em auto 4em;
	padding: 0 1em;
	color: hsl(220 15% 15%);
}

h1 {
	text-align: center;
	font-weight: 600;
}

h1 code {
	font-size: inherit;
}

.intro {
	max-width: 46em;
	margin: 0 auto 2em;
	text-align: center;
	color: var(--muted);
}

code {
	font-family: var(--font-code);
	font-size: 90%;
}

a {
	color: var(--accent);
}

/* ------------------------------------------------------------------ inputs -- */

.inputs {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: .8em;
	margin-bottom: .8em;
}

.inputs label {
	font-weight: 600;
}

.inputs input {
	flex: 1;
	min-width: 20em;
	font-family: var(--font-code);
	font-size: 105%;
	padding: .5em .7em;
	border: 2px solid var(--hairline);
	border-radius: .3em;
	background: white;
}

.inputs input:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 1px;
	border-color: transparent;
}

.inputs input:invalid {
	border-color: oklch(58% 0.21 25);
}

.examples {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: .4em;
	margin-bottom: 1.5em;
	font-size: 85%;
	color: var(--muted);
}

.examples button {
	font-family: var(--font-code);
	font-size: 95%;
	padding: .25em .6em;
	border: 1px solid var(--hairline);
	border-radius: 1em;
	background: var(--panel);
	color: inherit;
	cursor: pointer;
}

.examples button:hover {
	border-color: var(--accent);
	color: var(--accent);
}

.error {
	padding: .8em 1em;
	border-radius: .3em;
	border-inline-start: .4em solid oklch(58% 0.21 25);
	background: oklch(96% 0.03 25);
	color: oklch(35% 0.12 25);
}

/* ---------------------------------------------------------------- swatches -- */

.swatch {
	display: inline-block;
	inline-size: 1.3em;
	block-size: 1.3em;
	vertical-align: -.3em;
	margin-inline-end: .45em;
	border-radius: .2em;
	box-shadow: 0 0 0 1px hsl(220 15% 0% / .25) inset;
	background:
		linear-gradient(var(--color, transparent) 0 100%),
		conic-gradient(hsl(0 0% 80%) 0 25%, white 0 50%, hsl(0 0% 80%) 0 75%, white 0) 0 0 / .7em .7em;
}

.swatch.big {
	inline-size: 3.5em;
	block-size: 3.5em;
	border-radius: .3em;
}

.swatch.huge {
	display: block;
	inline-size: 100%;
	block-size: 7em;
	margin: 0;
	border-radius: .4em;
	background-size: auto, 1.2em 1.2em;
}

/* ---------------------------------------------------------------- sections -- */

section {
	margin: 2.5em 0;
	padding-top: .5em;
	border-top: 1px solid var(--hairline);
}

section > h2 {
	font-size: 1.15em;
	font-weight: 600;
	letter-spacing: .01em;
}

section > p {
	max-width: 50em;
	color: var(--muted);
}

.result {
	border-top: 0;
	padding: 1.2em 1.4em;
	border-radius: .5em;
	background: var(--panel);
	border: 1px solid var(--hairline);
}

.result > h2 {
	margin-top: 0;
}

.result-grid {
	display: grid;
	grid-template-columns: minmax(8em, 14em) 1fr;
	gap: 1.5em;
	align-items: center;
}

.result-grid dl {
	margin: 0;
	display: grid;
	grid-template-columns: max-content 1fr;
	gap: .3em 1em;
}

.result-grid dt {
	color: var(--muted);
	font-size: 90%;
}

.result-grid dd {
	margin: 0;
}

.browser {
	margin-bottom: 0;
	padding-top: .8em;
	border-top: 1px dashed var(--hairline);
	font-size: 90%;
	color: var(--muted);
}

.browser.agrees b,
.browser.agrees {
	color: oklch(45% 0.13 150);
}

.browser.differs {
	color: oklch(48% 0.16 55);
}

.grammar {
	padding: .6em .9em;
	border-radius: .3em;
	background: var(--panel);
	border: 1px solid var(--hairline);
	overflow-x: auto;
	white-space: nowrap;
}

dl.parse {
	display: grid;
	grid-template-columns: max-content 1fr;
	gap: .4em 1.5em;
}

dl.parse dt {
	font-weight: 600;
}

dl.parse dd {
	margin: 0;
}

.note {
	color: var(--muted);
	font-size: 90%;
}

.notes {
	margin: .6em 0 0;
	padding-inline-start: 1.2em;
	font-size: 90%;
	color: var(--muted);
}

.callout {
	margin-top: 1em;
	padding: .7em 1em;
	border-radius: .3em;
	border-inline-start: .3em solid var(--accent);
	background: var(--panel);
}

.steps {
	max-width: 50em;
	padding-inline-start: 1.4em;
}

.steps li {
	margin-bottom: .3em;
}

.calc {
	font-family: var(--font-code);
	font-size: 90%;
	line-height: 1.7;
}

/* ------------------------------------------------------------------ tables -- */

.scroller {
	overflow-x: auto;
	margin: .8em 0;
}

table.components {
	border-collapse: collapse;
	font-size: 90%;
}

table.components caption {
	text-align: start;
	padding-bottom: .4em;
	color: var(--muted);
}

table.components th,
table.components td {
	padding: .35em .8em;
	border: 1px solid var(--hairline);
	text-align: end;
	white-space: nowrap;
}

table.components thead th {
	background: var(--panel);
	font-weight: 600;
}

table.components tbody th,
table.components thead th:first-child {
	text-align: start;
	font-weight: 400;
}

table.components thead th:first-child {
	font-weight: 600;
}

table.components td {
	font-family: var(--font-code);
	font-variant-numeric: tabular-nums;
}

table.components tr.muted {
	color: var(--muted);
	background: hsl(220 25% 99%);
}

table.components td.missing {
	color: oklch(52% 0.16 300);
	font-style: italic;
}

/* -------------------------------------------------------------- color cards -- */

.color-cards {
	display: grid;
	gap: 1.2em;
}

.color-card {
	padding: 1em 1.2em;
	border: 1px solid var(--hairline);
	border-radius: .4em;
}

.color-card-head {
	display: flex;
	align-items: center;
	gap: 1em;
}

.written {
	font-size: 105%;
	font-weight: 600;
}

.pct {
	margin: .2em 0 0;
	font-size: 90%;
	color: var(--muted);
}

.same-space {
	margin: .4em 0;
}

/* -------------------------------------------------------------- iterations -- */

.iteration {
	margin: 1.2em 0;
	padding: 1em 1.2em;
	border: 1px solid var(--hairline);
	border-radius: .4em;
}

.iteration h3 {
	margin-top: 0;
	font-size: 1em;
	font-weight: 600;
}

.pushed {
	margin-bottom: 0;
	font-size: 90%;
	color: var(--muted);
}

#probe {
	display: none;
}

footer {
	margin-top: 3em;
	padding-top: 1em;
	border-top: 1px solid var(--hairline);
	font-size: 85%;
	color: var(--muted);
}

@media (width < 45em) {
	.result-grid {
		grid-template-columns: 1fr;
	}

	.result-grid dl {
		grid-template-columns: 1fr;
	}

	.inputs input {
		min-width: 100%;
	}
}