:root {
	--paper: #eef0f3;
	--ink: #1c2230;
	--muted: #586172;
	--line: #d3d8e0;
	--code-bg: #e2e6ec;
	--bar: #15171c;
	--bar-text: #8a909c;
	--focus: #3d7bd9;
	--link: #2a62b8;
	--tag-bg: #dfe4eb;
	--tag-done: #1f7a4d;
	--tag-open: #2a62b8;
	--tag-fork: #8a5a00;
	--tag-dropped: #6b6f78;
	color-scheme: light;
}
@media (prefers-color-scheme: dark) {
	:root {
		--paper: #1d222b;
		--ink: #e4e8ee;
		--muted: #9aa3b2;
		--line: #343b47;
		--code-bg: #262c37;
		--link: #7fa9ec;
		--tag-bg: #2a313d;
		--tag-done: #6cc79a;
		--tag-open: #7fa9ec;
		--tag-fork: #e0b45c;
		--tag-dropped: #9aa3b2;
		color-scheme: dark;
	}
}
@media (prefers-reduced-motion: no-preference) {
	html { scroll-behavior: smooth; }
}

* { box-sizing: border-box; }
body {
	margin: 0;
	background: var(--paper);
	color: var(--ink);
	font-family: "Recursive", system-ui, sans-serif;
	font-variation-settings: "MONO" 0;
	font-size: 1.0625rem;
	line-height: 1.6;
	overflow-wrap: break-word;
}
a { color: var(--link); text-underline-offset: 0.15em; }
a:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
code, pre, .mono {
	font-family: "Recursive", ui-monospace, "DejaVu Sans Mono", monospace;
	font-variation-settings: "MONO" 1;
}
code { font-size: 0.92em; }
:not(pre) > code { overflow-wrap: anywhere; }
@media (min-width: 40rem) {
	:not(pre) > code { white-space: nowrap; overflow-wrap: normal; }
}

/* The navigation is an i3bar: pages are workspaces, the one you are on is focused. */
.bar {
	position: sticky;
	top: 0;
	z-index: 1;
	display: flex;
	align-items: stretch;
	justify-content: space-between;
	gap: 1rem;
	background: var(--bar);
	font-size: 0.8125rem;
	line-height: 1;
}
.bar ol {
	display: flex;
	margin: 0;
	padding: 0;
	list-style: none;
	overflow-x: auto;
	scrollbar-width: none;
}
.bar ol li { margin: 0; }
.bar ol a {
	display: block;
	padding: 0.5rem 0.65rem;
	color: var(--bar-text);
	text-decoration: none;
	white-space: nowrap;
}
.bar ol a:hover { color: #ffffff; }
.bar ol a[aria-current] { background: var(--focus); color: #ffffff; }
.bar ol a:focus-visible { outline-offset: -2px; outline-color: #ffffff; border-radius: 0; }
.bar .status {
	display: flex;
	align-items: center;
	padding: 0 0.75rem;
	color: var(--bar-text);
	white-space: nowrap;
}
.bar .status:hover { color: #ffffff; }
@media (max-width: 34rem) {
	.bar .status { display: none; }
}

.page {
	max-width: 71rem;
	margin: 0 auto;
	padding: 0 1rem 4rem;
}
.text { max-width: 40rem; }

header { padding: 3.5rem 0 2rem; }
h1 {
	margin: 0 0 0.75rem;
	font-size: clamp(2.25rem, 4vw + 1.25rem, 4.25rem);
	font-weight: 800;
	line-height: 1;
	letter-spacing: -0.03em;
}
.lede { margin: 0; font-size: 1.25rem; line-height: 1.5; color: var(--ink); }
header .note { margin: 0.75rem 0 0; }
header .lede + p:not(.note) { margin: 1rem 0 0; }

figure { margin: 0; }
/* A video sits in a frame. If the video can't load, the frame says which file it waits for. */
.frame {
	position: relative;
	aspect-ratio: 1130 / 480;
	background: #000000;
	border-radius: 6px;
	overflow: hidden;
}
.frame::before {
	content: "Not recorded yet: " attr(data-file);
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	padding: 1rem;
	color: #8a909c;
	font-size: 0.875rem;
	text-align: center;
}
/* The window demos: a 16:9 and a 9:16 monitor side by side; the area outside them is see-through. */
.frame.demo { aspect-ratio: 1720 / 1100; background: transparent; }
.frame.demo::before { content: ""; }
.screen {
	position: relative;
	display: block;
	width: 100%;
	height: 100%;
	background: transparent;
}
figcaption { margin-top: 0.75rem; color: var(--muted); font-size: 0.9375rem; }

section { padding-top: 3rem; }
main [id] { scroll-margin-top: 2.5rem; }
h2 {
	margin: 0 0 0.75rem;
	font-size: 1.5rem;
	font-weight: 700;
	line-height: 1.25;
	letter-spacing: -0.01em;
}
h3 {
	margin: 1.5rem 0 0.5rem;
	font-size: 1.125rem;
	font-weight: 700;
}
p { margin: 0 0 1rem; }
.note { color: var(--muted); font-size: 0.9375rem; }

.pair {
	display: grid;
	gap: 2rem 1.5rem;
	grid-template-columns: repeat(auto-fit, minmax(min(26rem, 100%), 1fr));
	margin-top: 1.5rem;
}
.pair figcaption { max-width: 40rem; }

.gallery {
	display: grid;
	gap: 2.5rem 1.5rem;
	grid-template-columns: repeat(auto-fit, minmax(min(18rem, 100%), 1fr));
	margin-top: 1.5rem;
}
.gallery.wide { grid-template-columns: repeat(auto-fit, minmax(min(26rem, 100%), 1fr)); }
.gallery h3, .gallery h4 { margin: 0.75rem 0 0.25rem; font-size: 1.125rem; font-weight: 700; }
.gallery figcaption { margin-top: 0; }
.gallery figcaption p { margin: 0 0 0.5rem; }
.gallery pre { margin: 0.5rem 0 0; font-size: 0.8125rem; }

.parts { padding-left: 1.25rem; }
.parts li { margin-bottom: 1rem; padding-left: 0.25rem; }
.parts strong { font-weight: 700; }

dl { margin: 1.25rem 0; }
dt { font-weight: 600; }
dt code { font-size: 0.95rem; }
dd { margin: 0.25rem 0 1.25rem; }

pre {
	margin: 0 0 1rem;
	padding: 1rem 1.25rem;
	background: var(--code-bg);
	border-radius: 6px;
	overflow-x: auto;
	font-size: 0.875rem;
	line-height: 1.55;
}
.step-list { padding-left: 1.25rem; }
.step-list > li { margin-bottom: 1.5rem; padding-left: 0.25rem; }
.step-list pre { margin-top: 0.5rem; }
ul { padding-left: 1.25rem; }
ul li { margin-bottom: 0.5rem; }

/* The backlog: a table on wide screens, one block per item on narrow ones. */
.backlog {
	width: 100%;
	margin: 1rem 0 0;
	border-collapse: collapse;
	font-size: 0.9375rem;
	line-height: 1.5;
}
.backlog th, .backlog td {
	padding: 0.6rem 0.75rem 0.6rem 0;
	border-bottom: 1px solid var(--line);
	text-align: left;
	vertical-align: top;
}
.backlog thead th { color: var(--muted); font-weight: 600; font-size: 0.8125rem; }
.backlog tbody th[colspan] {
	padding-top: 1.75rem;
	font-size: 1.0625rem;
	font-weight: 700;
	border-bottom: 2px solid var(--line);
}
.backlog td:first-child { width: 34%; }
.backlog td:last-child { width: 9rem; }
@media (max-width: 52rem) {
	.backlog thead { display: none; }
	.backlog, .backlog tbody, .backlog tr, .backlog td, .backlog th { display: block; width: auto; }
	.backlog td:first-child, .backlog td:last-child { width: auto; }
	.backlog tr { padding: 0.75rem 0; border-bottom: 1px solid var(--line); }
	.backlog td { padding: 0.15rem 0; border: 0; }
	.backlog td[data-label]::before {
		content: attr(data-label) ": ";
		color: var(--muted);
		font-weight: 600;
	}
	.backlog tbody th[colspan] { border-bottom: 0; padding-top: 1.5rem; }
}

.tag {
	display: inline-block;
	padding: 0.1rem 0.45rem;
	border-radius: 4px;
	background: var(--tag-bg);
	font-size: 0.8125rem;
	font-weight: 600;
	white-space: nowrap;
}
.tag.done { color: var(--tag-done); }
.tag.open { color: var(--tag-open); }
.tag.fork { color: var(--tag-fork); }
.tag.dropped { color: var(--tag-dropped); }

footer {
	margin-top: 4rem;
	padding-top: 1.25rem;
	border-top: 1px solid var(--line);
	color: var(--muted);
	font-size: 0.9375rem;
}

/* The note at the top of the home page: framed, so nobody reads past it. */
section.caveat { margin-top: 0.5rem; padding: 1.25rem 1.5rem 0.5rem; border: 1px solid var(--line); border-left: 4px solid var(--tag-fork); border-radius: 6px; background: var(--code-bg); }
section.caveat h2 { margin-top: 0; }