/* Variables - Light mode as default */

:root {
	/* Colors */
	--color-fg: oklch(32% 4% 28deg);
	--color-bg: oklch(93% 1% 28deg);

	--color-border-bg: oklch(66% 2.5% 28deg);

	--color-code-bg: oklch(86% 2.5% 28deg);
	--color-muted: oklch(72% 4% 28deg);

	--color-link: oklch(50% 40% 48deg);
	--color-link-muted: oklch(70% 26% 48deg);

	/* Layout */
	--content-max-width: 700px;

	/* Spacing scale */
	--space-2xs: 0.125rem;
	--space-xs: 0.25rem;
	--space-sm: 0.5rem;
	--space-md: 1rem;
	--space-lg: 1.5rem;
	--space-xl: 2rem;
	--space-2xl: 3rem;
	--space-3xl: 4rem;
	--space-4xl: 6rem;

	/* Typography */
	--font-body: "Source Sans 3", sans-serif;
	--font-mono: "Inconsolata", monospace;
	--font-size-base: 1rem;
	--font-size-xs: 80%;
	--font-size-sm: 110%;
	--font-weight-xs: 300;
	--font-weight-base: 400;
	--font-weight-sm: 500; /* TODO: Some font weights don't seem to work with Source Sans. Figure out why.*/
	--font-weight-md: 600;
	--font-weight-lg: 700;

	/* Effects */
	--text-underline-offset: 0.22em;
	--text-decoration-thickness: 0.085em;
	--border-radius: 7px;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
	:root {
		/* Colors */
		--color-fg: oklch(93% 1% 28deg);
		--color-bg: oklch(18% 4% 28deg);

		--color-border-bg: oklch(44% 7% 28deg);

		--color-code-bg: oklch(15% 7% 28deg);
		--color-muted: oklch(50% 4% 28deg);

		--color-link: oklch(70% 40% 48deg);
		--color-link-muted: oklch(50% 26% 48deg);
	}
}

/* Base Styles */
html {
	background: var(--color-bg);

	scroll-padding-top: 0.3em;
}

body {
	overflow: auto;

	min-height: 100svh;

	margin: 0;
	padding: 0;

	background: var(--color-bg);
	color: var(--color-fg);

	font-family: var(--font-body);
	font-size: var(--font-size-sm);
	font-weight: var(--font-weight-base);

	line-height: 1.7;
	text-rendering: optimizeLegibility;
	-webkit-text-size-adjust: 100%;
	text-size-adjust: 100%;

	scrollbar-color: var(--color-border-bg) var(--color-bg);
}

blockquote,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
ol,
p,
pre,
section,
ul {
	margin-top: var(--space-2xl);
	margin-bottom: var(--space-2xl);
}

/* Typography & Content */
a,
a:visited {
	color: var(--color-link);

	text-decoration: underline;
	text-decoration-color: var(--color-link-muted);
	text-underline-offset: var(--text-underline-offset);
	text-decoration-thickness: var(--text-decoration-thickness);
}

blockquote {
	position: relative;
	font-size: 95%;

	margin-top: var(--space-lg);
	margin-bottom: var(--space-lg);

	padding: 0 var(--space-xl);
	opacity: 0.7;
}

blockquote::before {
	content: "";

	position: absolute;
	left: 0;
	top: 0;
	bottom: 0;

	width: 0.7rem;

	background: var(--color-muted);
	border-radius: calc(var(--border-radius) - 5px);
}

code {
	padding: 0.2em 0.4em;

	background: var(--color-code-bg);

	border-radius: var(--border-radius);

	font-family: var(--font-mono);
	font-size: 85%;
}

footer ul {
	list-style: none;

	margin: 0;
	padding: 0;

	display: flex;
	align-items: end;
	gap: var(--space-lg);
}

h1 {
	font-size: 2em;
	text-wrap: pretty;
}

hr {
	border: none;
	border-top: 1px solid var(--color-border-bg);
}

@media (min-width: 768px) {
	li p + p {
		margin-left: 0;
	}
}

main {
	flex: 1;
}

pre {
	padding: var(--space-lg);
	max-width: 95%;

	background: var(--color-code-bg);

	border-radius: var(--border-radius);

	overflow-x: auto;
}

q {
	font-style: italic;
}

ul,
ol {
	padding-left: var(--space-lg);
}

.labeled-list {
	list-style: none;
	counter-reset: labeled-list;
}

.labeled-list > li {
	counter-increment: labeled-list;
}

.labeled-list > li > p:first-child > strong::before {
	content: counter(labeled-list) ". ";
}

.labeled-list > li > * {
	margin-left: calc(-1 * var(--space-lg));
}

.labeled-list > li > p:first-child {
	margin-bottom: var(--space-xl);
}

sup {
	line-height: 0;
	font-size: 0.9em;
}

@media (min-width: 768px) {
	ul,
	ol {
		padding-left: 0;
	}

	.labeled-list > li > p:first-child {
		margin-top: var(--space-2xl);
	}

	.labeled-list > li > * {
		margin-left: 0;
	}

	.labeled-list > li > p:first-child > strong::before {
		display: inline-block;
		width: var(--space-lg);
		margin-left: calc(-1 * var(--space-lg));
	}
}

/* Layout */
#content {
	min-height: inherit;
	max-width: var(--content-max-width);

	box-sizing: border-box;

	padding: var(--space-md) var(--space-md);
	margin: 0 auto;

	display: flex;
	flex-direction: column;
}

@media (min-width: 640px) {
	#content {
		padding: calc(var(--space-3xl) + var(--space-xl)) var(--space-lg)
			var(--space-xl);
	}
}

/* Post list */
#post-list ul {
	margin: 0;
	padding: 0;
	list-style: none;
}

#post-list li {
	margin-bottom: var(--space-sm);
	width: fit-content;
}

#post-list a,
#post-list a:visited {
	display: flex;
	gap: var(--space-md);
	flex-wrap: nowrap;

	text-decoration: none;
	color: var(--color-fg);

	transition: transform 0.2s ease;
}

@media (min-width: 640px) {
	#post-list a {
		gap: var(--space-xl);
	}
}

.post-list-date {
	color: var(--color-link);

	font-weight: var(--font-weight-sm);

	white-space: nowrap;
	min-width: 5em;
}

.post-list-title {
	text-decoration: underline;
	text-decoration-color: var(--color-muted);
	text-decoration-thickness: var(--text-decoration-thickness);
}

/* Posts */
#post-body {
	flex: 1;
}

#post-back-ref {
	display: block;
	margin: var(--space-xl) auto;
}

#post-back-ref > a::before {
	content: "←";

	margin-right: 0.25em;

	font-family: system-ui, sans-serif;
}

#post-back-ref > a {
	text-decoration: none;

	font-size: 110%;
	font-weight: var(--font-weight-sm);
}

#post-date {
	margin: var(--space-4xl) 0 var(--space-xl);

	display: flex;
	flex-direction: column;
	gap: var(--space-md);

	color: var(--color-border-bg);

	font-size: 90%;
}

@media (min-width: 640px) {
	#post-date {
		flex-direction: row;
		align-items: center;
	}
}

#post-date:has(> #date-updated)::before {
	content: "";
	align-self: stretch;
	border: 0.5px solid var(--color-border-bg);
	max-width: 24px;
}

#date-created {
	order: -1;
}

#footnotes ol li p {
	margin-top: var(--space-xl);
	margin-bottom: var(--space-xl);
}

/* Special links */
.link,
.link-external {
	font-weight: var(--font-weight-sm);
	text-decoration: none;
}

li[data-page-kind="link"] a .post-list-title::after,
.link-external::after {
	content: " ↗";

	font-family: system-ui, sans-serif;
}

.footnote-backlink {
	margin-left: 0.4em;
}

.footnote-reference {
	margin: 0 0.3em;
}

/* Error pages */
#error-page h1 {
	display: inline-block;
	margin-bottom: 0;

	line-height: 1.4;
	font-size: 2.7em;
}

#error-page .error-message {
	display: inline-block;
	margin-left: var(--space-sm);

	color: var(--color-muted);

	font-size: 1.3em;
	font-weight: bolder;
}

#error-page p {
	margin-top: 0;
}

#error-page a,
#error-page a:visited {
	display: inline-block;

	text-decoration: none;
	font-weight: var(--font-weight-lg);

	transition: transform 0.2s ease;
}

#error-page a:hover {
	transform: scale(1.05);
}

#post-body:has(#error-page) + #post-date {
	display: none;
}

/* Web component fallbacks */
site-footnote {
	display: block;
	margin: var(--space-lg) var(--space-xl);
	font-size: var(--font-size-xs);
	color: var(--color-border-bg);
}