/* ============================================================
   base.css — element defaults and reading rhythm
   Applies the token system; see tokens.css and DESIGN.md.
   ============================================================ */

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

body {
	margin: 0 auto;
	padding: var(--space-3);
	max-width: var(--measure);
	background: var(--color-bg);
	color: var(--color-fg);
	font-family: var(--font-body);
	font-size: var(--text-m);
	font-weight: 400;
	line-height: 1.6;
}

/* Headings set in the pixel-grid display face. Departure Mono has a
   single weight, so hierarchy comes from size and space, not boldness —
   in keeping with the modest scale decision. */
h1,
h2,
h3 {
	font-family: var(--font-display);
	font-weight: 400;
	line-height: 1.25;
	margin-block: var(--space-4) var(--space-2);
}

h1 {
	font-size: var(--text-2xl);
}

h2 {
	font-size: var(--text-xl);
}

h3 {
	font-size: var(--text-l);
}

a {
	color: var(--color-link);
	text-decoration: underline;
	text-decoration-thickness: 2px;
	text-underline-offset: 0.1875em;
}

/* On hover the underline answers in amber; the text itself keeps the
   link color in both schemes (amber may not be text on eigengrau). */
a:hover {
	text-decoration-color: var(--color-highlight);
}

a:focus-visible {
	outline: 2px solid var(--color-link);
	outline-offset: 2px;
}

/* Selection inverts fg/bg — text never sits on cyan or amber. */
::selection {
	background: var(--color-fg);
	color: var(--color-bg);
}

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

/* For symbolic/map imagery: never let the browser smooth the grid away. */
.pixelated,
img.pixelated {
	image-rendering: pixelated;
}

code,
pre,
kbd,
samp {
	font-family: var(--font-mono);
	font-size: 0.875em;
}

pre {
	overflow-x: auto;
	padding: var(--space-3);
	border: 1px solid var(--color-rule);
}

hr {
	border: 0;
	border-top: 1px solid var(--color-rule);
	margin-block: var(--space-4);
}

/* Visually hidden, available to assistive tech. */
.visually-hidden {
	position: absolute;
	width: 1px;
	height: 1px;
	margin: -1px;
	padding: 0;
	overflow: hidden;
	clip-path: inset(50%);
	white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		transition-duration: 0.01ms !important;
	}
}