:root {
	--ink: hsl(220 15% 20%);
	--muted: hsl(220 10% 45%);
	--accent: hsl(210 80% 40%);
	--border: hsl(220 15% 85%);
	--surface: hsl(220 20% 98%);
}
body {
	margin: 0;
	font-family: system-ui, sans-serif;
	color: var(--ink);
	background: white;
}
header {
	padding-block: 1.5rem;
	border-bottom: 1px solid var(--border);
	background: var(--surface);
	.content {
		max-width: 60rem;
		margin-inline: auto;
		padding-inline: 2rem;
	}
	h1 {
		margin: 0 0 1rem;
		font-size: 1.25rem;
		a {
			color: inherit;
			text-decoration: none;
		}
	}
}
/* The index page's header holds no nav, so its title needs no gap below. */
header h1:last-child {
	margin-block-end: 0;
}
nav {
	ul {
		display: flex;
		flex-wrap: wrap;
		gap: 0.25rem 1rem;
		margin: 0;
		padding: 0;
		list-style: none;
	}
	a {
		display: inline-block;
		padding: 0.25rem 0;
		font-size: 0.9rem;
		color: var(--muted);
		text-decoration: none;
		border-bottom: 2px solid transparent;
		&:hover {
			color: var(--accent);
		}
		&[aria-current='page'] {
			color: var(--accent);
			border-bottom-color: var(--accent);
		}
	}
}
main {
	max-width: 60rem;
	margin: 0 auto;
	padding: 2rem;
}

/* ==== Demo directory ==== */
/* The index page's list of demo pages, one card per page. */
.demo-list {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
	gap: 1rem;
	margin: 2rem 0 0;
	padding: 0;
	list-style: none;
	li {
		padding: 1rem 1.25rem;
		background: var(--surface);
		border: 1px solid var(--border);
		border-radius: 0.5rem;
	}
	a {
		font-size: 1.1rem;
		font-weight: 600;
		color: var(--accent);
		text-decoration: none;
		&:hover {
			text-decoration: underline;
		}
	}
	p {
		margin: 0.5rem 0 0;
		font-size: 0.9rem;
		color: var(--muted);
	}
}