* {
	box-sizing: border-box;
}

/*
  Allow percentage-based heights in the application.
  Contain margins inside the body element.
  html will be the scrolling element.
  https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_display/Block_formatting_context
*/
body {
	min-block-size: 100dvh;
	display: flow-root;
	margin: 0;
}

/*
  Prevent layout shifts when the scrollbar appears or disappears
  https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Properties/scrollbar-gutter
*/
html {
	scrollbar-gutter: stable;
}

/*
  Prevent scrolling when there's an open modal
  https://htmhell.dev/adventcalendar/2025/9/
*/
/* Check whether any modal dialogs are open */
html:has(dialog[open]:modal) {
	/* Poof! No more scrolling! */
	overflow: hidden;
	/* keep the scrollbar width */
	/* scrollbar-gutter: stable; */
}

/*
  Prevent uncontrolled changes to font size
  https://kilianvalkhof.com/2022/css-html/your-css-reset-needs-text-size-adjust-probably/
*/
html {
	-webkit-text-size-adjust: none;
	text-size-adjust: none;
}

/*
  Optimize text rendering for max performance
  Avoid `text-rendering: optimizeLegibility`!
  See https://marco.org/2012/11/15/text-rendering-optimize-legibility
  and https://hankchizljaw.com/wrote/a-modern-css-reset/
  */
html {
	text-rendering: optimizeSpeed;
}

/*
  Disable subpixel antialiasing
  This one is controversial!
  See https://www.joshwcomeau.com/css/custom-css-reset/#four-font-smoothing-5
  but also https://www.zachleat.com/web/font-smooth/
*/
html {
	-webkit-font-smoothing: antialiased;
}

/*
  Remove default margins in favour of a controlled flow
  Some resets even use `* { margin: 0 }`
*/
h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dd {
	margin-block: 0;
}

/* Consistent behaviour for replacement (media) elements */
img,
picture,
video,
canvas,
svg,
iframe,
embed,
object {
	display: block;
	max-inline-size: 100%;
}

/*
  Remove default list styles on custom styled lists
  A list role or a class indicates default styling (and semantics) are removed
*/
ul[role="list"],
ol[role="list"] {
	list-style: none;
	padding-inline-start: 0;
	margin-block: 0;
}

dl[class] dd {
	margin-inline-start: 0;
}

/* Set an accessible line height */
html {
	line-height: 1.5;
}

/* Reduce line height for headings and (some) form elements */
h1,
h2,
h3,
h4,
h5,
h6,
button,
input,
label {
	line-height: 1.1;
}

/* Normalize typography for form elements */
input,
button,
select,
textarea {
	font: inherit;
}

/* Balance wrapping and prevent overflow on headings */
h1,
h2,
h3,
h4,
h5,
h6 {
	text-wrap: balance;
	overflow-wrap: break-word;
	hyphens: auto;
}

/*
  Favor better typography (minimal number of orphans) over speed for body text
  1. No support in Firefox and Safari for now
  2. Rules are language-specific and support varies
*/
p {
	/* 1 */
	text-wrap: pretty;
	/* 2 */
	hyphens: auto;
}

/* Previous lines in the area being edited remain stable */
[contenteditable] {
	text-wrap: stable;
}

/* ~~Default styles for unstyled anchor elements~~ */
/*a:not([class]) {
	color: currentColor;
}*/
/* ~~Default styles anchor elements~~ */
a {
	color: currentColor;
}

/*
  For folks who didn't check `Less wiggle please` in their OS setings:
  1. Smooth scrolling when scrolling is triggered by the navigation or
     CSSOM scrolling APIs for users that don't prefer reduced motion
     https://gist.github.com/EllyLoel/4ff8a6472247e6dd2315fd4038926522
  2. Turn cross-document view-transitions on (opy-in)
     Uses the default cross-fade animation. For an example of a custom
     animation see https://mdn.github.io/dom-examples/view-transitions/mpa/
*/
@media (prefers-reduced-motion: no-preference) {

	/* 1 */
	html:focus-within {
		scroll-behavior: smooth;
	}

	/* 2 */
	@view-transition {
		navigation: auto;
	}
}

/* Extra scroll margin for all anchors  */
:target {
	scroll-margin-block: 5ex;
}

/* Follow the browser's logic in determining when a focus ring should be shown */
:focus:not(:focus-visible) {
	outline: none;
}

/* Tables */
table {
	/* row and column headings a centered by user agent defaults */
	/* text-align: left; */
	border-collapse: collapse;
}

th,
caption {
	text-align: start;
}

/* th, td {
  border: … ;
} */

/* Utility
   ========================================================================== */

/*
	Hide content accessibly
	aka screen reader only content
	See https://zellwk.com/blog/hide-content-accessibly/
*/
.visuallyhidden {
	border: 0;
	clip-path: rect(0 0 0 0);
	height: auto;
	margin: 0;
	overflow: hidden;
	padding: 0;
	position: absolute;
	width: 1px;
	white-space: nowrap;
}

/* Very opinionated but truly centered thematic break (hr)  */
hr:not([class]) {
	color: currentColor;
	border: none;
	/* used rem before, why 1.5? */
	block-size: var(--line-height, 1.5lh);
	margin-block: var(--gap-block, 1lh);
	background-image: linear-gradient(90deg, currentColor 0%, currentColor 100%);
	background-repeat: no-repeat;
	background-position: center;
	background-size: 100% var(--border-width, 1px);
}

/* It's a circle */
.circle {
	clip-path: circle(50% at 50% 50%);
}

/* Site
   ========================================================================== */

:root {
	color-scheme: light dark;

	--black-wash: oklch(15.48% 0.0023 286.13);
	--cornsilk: oklch(97.78% 0.0348 100.33);

	--background: var(--black-wash);
	--foreground: var(--cornsilk);
}

body {
	background-color: var(--background);
	color: var(--foreground);
	font:
		1.5rem ui-monospace,
		SFMono-Regular,
		Menlo,
		Monaco,
		Consolas,
		Liberation Mono,
		Courier New,
		monospace;
}

.section {
	min-block-size: 100dvh;
	padding: 4rem 2rem;
	display: grid;
	align-content: center;
	justify-items: center;
}

.section+.section {
	border-top: .25rem dashed;
}

.section:first-child {
	font-size: 2rem;
}

.content {
	max-width: 60rem;
	width: 100%;
}

.flow>*+* {
	margin-block-start: 3em;
}

p {
	line-height: 1.5;
}

a {
	text-decoration-thickness: .05em;
	text-underline-offset: .15em;
}

a:hover {
	text-decoration: none;
}