/* One stylesheet, no JavaScript. Colours are custom properties so dark mode is a
   single override block at the bottom. */

:root {
	--bg: #fdfdfc;
	--fg: #1f2328;
	--muted: #62686f;
	--rule: #e3e5e8;
	--accent: #1a5fb4;
	--tag-bg: #eef1f5;
	--code-bg: #f5f6f8;
	--measure: 68ch;
}

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

html {
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0 auto;
	padding: 2rem 1.25rem 4rem;
	max-width: var(--measure);
	background: var(--bg);
	color: var(--fg);
	font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
	font-size: 1.0625rem;
	line-height: 1.65;
}

a {
	color: var(--accent);
	text-decoration-thickness: 1px;
	text-underline-offset: 2px;
}

/* Header and footer */

.site-header {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem 1.5rem;
	align-items: baseline;
	justify-content: space-between;
	padding-bottom: 1rem;
	border-bottom: 1px solid var(--rule);
}

.site-name {
	font-size: 1.25rem;
	font-weight: 650;
	color: var(--fg);
	text-decoration: none;
	letter-spacing: -0.01em;
}

.site-header nav {
	display: flex;
	gap: 1rem;
	font-size: 0.9375rem;
}

.site-footer {
	margin-top: 4rem;
	padding-top: 1rem;
	border-top: 1px solid var(--rule);
	color: var(--muted);
	font-size: 0.875rem;
}

main {
	margin-top: 2.5rem;
}

/* Post listings */

.post-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.post-list > li + li {
	margin-top: 2.25rem;
}

.post-card h2 {
	margin: 0;
	font-size: 1.375rem;
	line-height: 1.3;
	letter-spacing: -0.01em;
}

.post-card h2 a {
	color: var(--fg);
	text-decoration: none;
}

.post-card h2 a:hover {
	color: var(--accent);
	text-decoration: underline;
}

.summary {
	margin: 0.4rem 0 0;
	color: var(--muted);
}

.meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem;
	margin: 0.35rem 0 0;
	color: var(--muted);
	font-size: 0.875rem;
}

.tag {
	padding: 0.1rem 0.5rem;
	border-radius: 999px;
	background: var(--tag-bg);
	color: var(--muted);
	font-size: 0.8125rem;
	text-decoration: none;
}

a.tag:hover {
	color: var(--accent);
}

.count {
	opacity: 0.65;
}

.draft {
	padding: 0.1rem 0.5rem;
	border: 1px dashed var(--muted);
	border-radius: 999px;
	font-size: 0.8125rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.tag-cloud {
	margin-top: 3.5rem;
	padding-top: 1.5rem;
	border-top: 1px solid var(--rule);
}

.tag-cloud h2 {
	margin: 0 0 0.75rem;
	font-size: 0.875rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--muted);
}

.tag-cloud p {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin: 0;
}

/* A single post */

h1 {
	margin: 0 0 0.25rem;
	font-size: 2rem;
	line-height: 1.2;
	letter-spacing: -0.02em;
}

.post-body {
	margin-top: 2rem;
}

.post-body h2,
.post-body h3 {
	margin: 2.25rem 0 0.5rem;
	line-height: 1.3;
	letter-spacing: -0.01em;
}

.post-body h2 {
	font-size: 1.4rem;
}

.post-body h3 {
	font-size: 1.15rem;
}

.post-body img {
	max-width: 100%;
	height: auto;
}

blockquote {
	margin: 1.5rem 0;
	padding: 0.25rem 0 0.25rem 1.25rem;
	border-left: 3px solid var(--rule);
	color: var(--muted);
}

hr {
	margin: 2.5rem 0;
	border: 0;
	border-top: 1px solid var(--rule);
}

/* Code. Chroma highlights server-side and emits class names; the colours for
   those classes live in the generated syntax.css. */

code,
pre {
	font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
	font-size: 0.9375em;
}

:not(pre) > code {
	padding: 0.15em 0.35em;
	border-radius: 4px;
	background: var(--code-bg);
}

/* chroma paints its own block background; use the page's so that inline code and
   code blocks match in both themes. The extra specificity beats syntax.css. */
pre.chroma {
	background-color: var(--code-bg);
}

pre {
	margin: 1.5rem 0;
	padding: 1rem;
	border: 1px solid var(--rule);
	border-radius: 6px;
	overflow-x: auto;
	line-height: 1.5;
}

/* Tables */

table {
	width: 100%;
	margin: 1.5rem 0;
	border-collapse: collapse;
	font-size: 0.9375rem;
}

th,
td {
	padding: 0.5rem 0.75rem;
	border-bottom: 1px solid var(--rule);
	text-align: left;
}

th {
	font-weight: 600;
}

/* Odds and ends */

.back {
	margin-top: 3rem;
	font-size: 0.9375rem;
}

.empty,
.error p {
	color: var(--muted);
}

.error h1 {
	font-size: 3rem;
	color: var(--muted);
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #16181c;
		--fg: #e6e8ea;
		--muted: #9aa2ac;
		--rule: #2c3037;
		--accent: #79b8ff;
		--tag-bg: #22262c;
		--code-bg: #22262c;
	}
}