/**
 * Base: reset, typography, focus states, skip link, layout primitives.
 */

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

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

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}
	*,
	*::before,
	*::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
		scroll-behavior: auto !important;
	}
}

body {
	margin: 0;
	background-color: var(--color-background);
	color: var(--color-text);
	font-family: var(--font-body);
	font-size: var(--text-body-lg-size);
	line-height: var(--text-body-lg-line);
	-webkit-font-smoothing: antialiased;
}

img,
picture,
svg {
	max-width: 100%;
	display: block;
	height: auto;
}

a {
	color: inherit;
	text-decoration: none;
}

ul,
ol {
	margin: 0;
	padding: 0;
	list-style: none;
}

button {
	font-family: inherit;
	cursor: pointer;
}

input,
textarea,
select {
	font-family: inherit;
	font-size: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
	font-family: var(--font-heading);
	color: var(--color-text);
	margin: 0;
	font-weight: 700;
}

p {
	margin: 0;
}

/* Accessible focus ring, visible for keyboard users, consistent with the
   gold focus token in DESIGN.md. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
	outline: 2px solid var(--color-gold);
	outline-offset: 2px;
	border-radius: var(--radius-sm);
}

.screen-reader-text {
	border: 0;
	clip: rect(1px, 1px, 1px, 1px);
	clip-path: inset(50%);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute !important;
	width: 1px;
	word-wrap: normal !important;
}

.academic-skip-link {
	position: absolute;
	top: -100px;
	left: var(--space-md);
	z-index: 1000;
	background: var(--color-primary);
	color: var(--color-text-inverse);
	padding: var(--space-sm) var(--space-md);
	border-radius: var(--radius-md);
	transition: top var(--duration-fast) var(--ease-standard);
}

.academic-skip-link:focus {
	top: var(--space-md);
}

.academic-container {
	max-width: var(--container-max);
	margin-inline: auto;
	padding-inline: var(--margin-mobile);
}

.academic-content-narrow {
	max-width: 860px;
}

.academic-heading-xl {
	font-size: var(--text-headline-xl-mobile-size);
	line-height: var(--text-headline-xl-mobile-line);
	letter-spacing: -0.01em;
}

.academic-heading-md {
	font-size: var(--text-headline-md-size);
	line-height: var(--text-headline-md-line);
}

.academic-heading-sm {
	font-size: var(--text-headline-sm-size);
	line-height: var(--text-headline-sm-line);
	font-family: var(--font-heading);
}

.academic-body {
	color: var(--color-text-muted);
	font-size: var(--text-body-lg-size);
	line-height: var(--text-body-lg-line);
	margin-top: var(--space-sm);
	max-width: 65ch;
}

.academic-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: var(--space-sm);
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	padding: var(--space-xs) 12px;
	border-radius: var(--radius-full);
}

.academic-eyebrow--green {
	width: fit-content;
	background: #d1fae5;
	color: var(--color-primary);
}

.academic-eyebrow--gold {
	background: #fffbeb;
	color: var(--color-gold);
	border: 1px solid #fde68a;
}

.academic-prose :where(p, ul, ol) {
	margin-bottom: var(--space-md);
}

.academic-prose :where(h2, h3, h4) {
	margin-top: var(--space-xl);
	margin-bottom: var(--space-sm);
}

.academic-empty-state {
	padding: var(--space-xl);
	text-align: center;
	border: 1px dashed var(--color-border-strong);
	border-radius: var(--radius-lg);
	color: var(--color-text-muted);
	background: var(--color-surface-recessed);
}

.academic-main--page {
	padding-block: var(--space-2xl);
}

.academic-breadcrumbs {
	font-size: var(--text-body-sm-size);
	color: var(--color-text-muted);
	margin-bottom: var(--space-lg);
}

.academic-breadcrumbs a {
	color: var(--color-primary);
	font-weight: 600;
}

.academic-error-state {
	text-align: center;
	padding-block: var(--space-2xl);
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--space-md);
}