/* ============================================================
   AFD — Design Tokens
   ============================================================ */

:root {
	/* ── Colors ─────────────────────────────────── */
	--color-cream: #f4f0ea;
	--color-charcoal: #181818;
	--color-red: #e53935;
	--color-teal: #008085;

	/* Color — semantic */
	--bg-dark: var(--color-charcoal);
	--bg-cream: var(--color-cream);
	--text-dark: var(--color-charcoal);
	--text-cream: var(--color-cream);
	--accent-red: var(--color-red);
	--accent-teal: var(--color-teal);
	--border-dark: rgba(24, 24, 24, 0.2);
	--border-light: rgba(244, 240, 234, 0.2);

	/* ── Typography — Families ──────────────────── */
	--font-display: "Archivo Black", sans-serif;
	--font-serif: "Playfair Display", serif;
	--font-sans: "Darker Grotesque", system-ui, -apple-system, sans-serif;
	--font-mono: "JetBrains Mono", monospace;

	/* ── Typography — Scale ─────────────────────── */
	--text-xs: 0.75rem;
	--text-sm: 0.875rem;
	--text-md: 1.1rem;
	--text-lg: 1.5rem;
	--text-xl: 2rem;
	--text-2xl: 3rem;
	--text-h3: clamp(1.5rem, 4vw, 4rem);
	--text-h2: clamp(2.2rem, 8vw, 10rem);
	--text-h1: clamp(2.8rem, 11vw, 13rem);

	/* ── Typography — Weight ────────────────────── */
	--weight-light: 300;
	--weight-regular: 400;
	--weight-medium: 500;
	--weight-bold: 700;

	/* ── Typography — Leading ───────────────────── */
	--leading-tight: 0.85;
	--leading-snug: 0.9;
	--leading-normal: 1.2;
	--leading-relaxed: 1.6;

	/* ── Typography — Tracking ──────────────────── */
	--tracking-tight: -0.02em;
	--tracking-normal: 0;
	--tracking-wide: 0.05em;
	--tracking-wider: 0.1em;

	/* ── Spacing ────────────────────────────────── */
	--space-xs: 0.75rem;
	--space-sm: 1rem;
	--space-md: 1.5rem;
	--space-lg: 2rem;
	--space-xl: 3rem;
	--space-2xl: 4rem;
	--space-3xl: 6rem;
	--space-inset: 2vw;
	--space-section: 8vw;

	/* ── Borders ────────────────────────────────── */
	--border-thin: 2px;
	--border-thick: 3px;

	/* ── Shadows (neo-brutalist offsets) ─────────── */
	--shadow-sm: 6px 6px 0px;
	--shadow-md: 8px 8px 0px;
	--shadow-lg: 10px 10px 0px;

	/* ── Motion ─────────────────────────────────── */
	--ease-out: cubic-bezier(0.16, 1, 0.3, 1);
	--duration-normal: 400ms;
}

/* ============================================================
   Reset & Base
   ============================================================ */

*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html {
	font-size: 20px;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

body {
	font-family: var(--font-sans);
	font-size: var(--text-lg);
	font-weight: var(--weight-medium);
	line-height: var(--leading-relaxed);
	overflow-x: hidden;
}

/* Noise overlay */
body::after {
	content: "";
	position: fixed;
	inset: 0;
	pointer-events: none;
	z-index: 9999;
	opacity: 0.06;
	background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.7' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

a {
	color: inherit;
	text-decoration: none;
}
p {
	margin-bottom: var(--space-md);
	font-weight: var(--weight-medium);
}

/* ============================================================
   Typography
   ============================================================ */

h1,
h2,
h3 {
	font-family: var(--font-display);
	text-transform: uppercase;
	line-height: var(--leading-snug);
	letter-spacing: var(--tracking-tight);
	margin-bottom: var(--space-sm);
}

h1 {
	font-size: var(--text-h1);
}
h2 {
	font-size: var(--text-h2);
}
h3 {
	font-size: var(--text-h3);
}

.serif-text {
	font-family: var(--font-serif);
	font-weight: var(--weight-bold);
	font-style: italic;
	text-transform: none;
	letter-spacing: 0;
}

.mono-label {
	font-family: var(--font-mono);
	text-transform: uppercase;
	letter-spacing: var(--tracking-wide);
	font-size: var(--text-md);
}

.accent-red {
	color: var(--accent-red);
}
.accent-teal {
	color: var(--accent-teal);
}

.section-title {
	margin-bottom: var(--space-lg);
	line-height: var(--leading-snug);
}
.section-title--centered {
	text-align: center;
	margin-bottom: var(--space-2xl);
}
.section-lead {
	margin-top: var(--space-lg);
	font-size: var(--text-lg);
}

/* ============================================================
   Theme Contexts
   ============================================================ */

.section--dark {
	background-color: var(--bg-dark);
	color: var(--text-cream);
	--border-color: var(--border-light);
	--card-bg: var(--bg-dark);
	--card-shadow: var(--text-cream);
	--card-text: var(--text-cream);
}

.section--light,
.theme-light {
	background-color: var(--bg-cream);
	color: var(--text-dark);
	--border-color: var(--border-dark);
	--card-bg: var(--bg-cream);
	--card-shadow: var(--text-dark);
	--card-text: var(--text-dark);
}

/* ============================================================
   Layout
   ============================================================ */

.section {
	padding: var(--space-section) 4vw;
	position: relative;
}

.inset-frame {
	margin: var(--space-inset);
	padding: var(--space-section) 6vw;
	position: relative;
	overflow: hidden;
	border: var(--border-thick) solid var(--text-dark);
	box-shadow: var(--shadow-md) var(--text-dark);
}

.grid-2 {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 4vw;
	align-items: start;
}

.grid-3 {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 2vw;
}

/* ============================================================
   Nav
   ============================================================ */

.site-nav {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	padding: 2vw 4vw;
	display: flex;
	justify-content: space-between;
	align-items: center;
	z-index: 100;
	mix-blend-mode: difference;
	color: #fff;
}

.nav-logo {
	display: flex;
	align-items: center;
}

.nav-logo__img {
	height: 44px;
	width: auto;
	display: block;
	filter: brightness(0);
}

.site-nav .nav-logo__img {
	filter: brightness(0) invert(1);
}

.nav-links {
	display: flex;
	gap: var(--space-lg);
	list-style: none;
	font-family: var(--font-mono);
	font-size: var(--text-md);
	text-transform: uppercase;
	font-weight: var(--weight-bold);
}

.nav-links a:hover {
	text-decoration: underline;
	text-decoration-thickness: var(--border-thick);
	text-underline-offset: 4px;
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
	display: flex;
	flex-direction: column;
	padding-top: clamp(6rem, 15vh, 6rem);
	padding-bottom: clamp(4rem, 10vh, 8rem);
}

.hero-top {
	display: flex;
	justify-content: space-between;
	align-items: flex-end;
	margin-bottom: var(--space-lg);
	border-bottom: var(--border-thick) solid var(--text-dark);
	padding-bottom: var(--space-sm);
}

.hero-badge {
	background: var(--text-dark);
	color: var(--text-cream);
	padding: 0.4rem var(--space-sm);
	font-weight: var(--weight-bold);
}

.hero-title {
	display: flex;
	flex-direction: column;
	word-break: break-word;
	hyphens: auto;
}

.hero-title span {
	display: block;
}
.hero-title__accent {
	color: var(--accent-red);
}

.hero-body {
	margin-top: clamp(2rem, 5vw, 4rem);
}

.hero-subtitle {
	font-size: var(--text-xl);
	max-width: 50ch;
	line-height: var(--leading-normal);
	font-weight: var(--weight-light);
}

.hero-bg {
	position: absolute;
	top: 50%;
	right: -5%;
	transform: translateY(-50%);
	width: 70vw;
	height: 70vw;
	z-index: -1;
	opacity: 0.6;
}

.hero-bg__svg {
	width: 100%;
	height: 100%;
}

/* ============================================================
   Diagrams (external SVGs)
   ============================================================ */

.diagram {
	margin-bottom: var(--space-sm);
}

.diagram__svg {
	width: 100%;
	display: block;
	margin: 0 auto;
}

.diagram--inversion {
	margin-top: var(--space-lg);
	margin-bottom: 0;
}
.diagram--inversion .diagram__svg {
	margin-bottom: var(--space-3xl);
}
.diagram--judgment {
	margin-top: var(--space-3xl);
	margin-bottom: var(--space-lg);
	width: 100%;
	display: flex;
	justify-content: center;
}
.diagram--judgment .diagram__svg {
	width: 90vw;
	height: auto;
	display: block;
	margin: 0 auto;
}
.diagram--pipeline {
	display: flex;
	justify-content: center;
	margin-bottom: var(--space-2xl);
}
.diagram--pipeline .diagram__svg {
	max-width: 600px;
}
.diagram--stack .diagram__svg {
	max-width: 400px;
}

/* ============================================================
   Cards
   ============================================================ */

.structural-card {
	border: var(--border-thick) solid var(--border-color);
	padding: var(--space-xl);
	display: flex;
	flex-direction: column;
	gap: var(--space-md);
	background: var(--card-bg);
	color: var(--card-text);
	box-shadow: var(--shadow-sm) var(--card-shadow);
	transition:
		transform var(--duration-normal) var(--ease-out),
		box-shadow var(--duration-normal) var(--ease-out);
}

.structural-card:hover {
	transform: translate(-4px, -4px);
	box-shadow: var(--shadow-lg) var(--accent-teal);
}

.structural-card--red:hover {
	box-shadow: var(--shadow-lg) var(--accent-red);
}

.card-number {
	font-size: var(--text-2xl);
	font-weight: var(--weight-bold);
	color: var(--border-color);
	line-height: var(--leading-snug);
}

.card-quote {
	margin-top: auto;
	padding-top: var(--space-lg);
	border-top: var(--border-thin) solid var(--border-color);
	color: var(--accent-red);
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: var(--space-sm) 2.5rem;
	font-family: var(--font-mono);
	text-transform: uppercase;
	font-weight: var(--weight-bold);
	border: var(--border-thick) solid var(--text-dark);
	cursor: pointer;
	background: var(--bg-cream);
	color: var(--text-dark);
	box-shadow: var(--shadow-sm) var(--text-dark);
	transition:
		background var(--duration-normal) var(--ease-out),
		color var(--duration-normal) var(--ease-out),
		transform var(--duration-normal) var(--ease-out),
		box-shadow var(--duration-normal) var(--ease-out);
}

.btn:hover {
	background: var(--text-dark);
	color: var(--text-cream);
	transform: translate(-2px, -2px);
	box-shadow: var(--shadow-md) var(--accent-red);
}

.btn--primary {
	background: var(--accent-teal);
	color: var(--text-cream);
}

.btn--primary:hover {
	background: var(--accent-red);
	box-shadow: var(--shadow-md) var(--text-dark);
}

/* ============================================================
   Code Blocks
   ============================================================ */

.code-block {
	background: #111;
	color: #eee;
	padding: 2.5rem;
	border: var(--border-thick) solid var(--border-color);
	box-shadow: var(--shadow-md) var(--border-color);
	font-family: var(--font-mono);
	font-size: var(--text-sm);
	overflow-x: auto;
}

.code-block--muted {
	opacity: 0.5;
	box-shadow: none;
}

.code-block--accent {
	border-color: var(--accent-teal);
	box-shadow: var(--shadow-md) var(--accent-teal);
}

.code-block--install {
	background: var(--bg-dark);
	border-color: var(--accent-teal);
	box-shadow: var(--shadow-sm) var(--accent-teal);
	font-size: var(--text-sm);
}

/* Code Annotations */
.code-annotations {
	margin-top: var(--space-md);
	display: flex;
	flex-direction: column;
	gap: var(--space-xs);
}

.code-annotation {
	font-size: var(--text-xs);
	opacity: 0.8;
}

/* ============================================================
   Section Divider
   ============================================================ */

.section-divider {
	margin: var(--space-section) 0;
	border-top: var(--border-thick) solid var(--border-color);
}

/* ============================================================
   Error Comparison
   ============================================================ */

.error-comparison {
	margin-top: var(--space-xl);
	align-items: stretch;
}

.error-label {
	margin-top: var(--space-sm);
	text-align: center;
	font-size: var(--text-xs);
	letter-spacing: var(--tracking-wider);
}

.error-closing {
	text-align: center;
	margin-top: var(--space-xl);
	max-width: 60ch;
	margin-left: auto;
	margin-right: auto;
	font-size: var(--text-md);
}

/* ============================================================
   Comparison Cards (Before/After)
   ============================================================ */

.comparison-card {
	border: var(--border-thick) solid var(--border-color);
	padding: var(--space-lg) 2.5rem;
	margin-bottom: var(--space-md);
}

.comparison-card h3 {
	font-size: var(--text-sm);
	margin-bottom: var(--space-md);
	letter-spacing: var(--tracking-wider);
}

.comparison-card--before {
	border-color: var(--accent-red);
	box-shadow: var(--shadow-sm) var(--accent-red);
}

.comparison-card--before h3 {
	color: var(--accent-red);
}

.comparison-card--after {
	border-color: var(--accent-teal);
	box-shadow: var(--shadow-sm) var(--accent-teal);
}

.comparison-card--after h3 {
	color: var(--accent-teal);
}

.comparison-list {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: var(--space-xs);
	font-family: var(--font-mono);
	font-size: var(--text-sm);
}

.comparison-list li {
	padding-left: var(--space-md);
	position: relative;
}

.comparison-card--before .comparison-list li::before {
	content: "✕";
	position: absolute;
	left: 0;
	color: var(--accent-red);
	font-weight: var(--weight-bold);
}

.comparison-card--after .comparison-list li::before {
	content: "→";
	position: absolute;
	left: 0;
	color: var(--accent-teal);
	font-weight: var(--weight-bold);
}

/* ============================================================
   Section Kicker
   ============================================================ */

.section-kicker {
	text-align: center;
	margin-top: var(--space-2xl);
	max-width: 80ch;
	margin-left: auto;
	margin-right: auto;
	font-size: var(--text-md);
	opacity: 0.7;
}

.section-closing {
	margin-top: var(--space-lg);
	padding-top: var(--space-lg);
	border-top: var(--border-thin) solid var(--border-color);
	font-style: italic;
}

/* ============================================================
   Install Block
   ============================================================ */

.install-block {
	margin-top: var(--space-lg);
	margin-bottom: var(--space-sm);
}

/* ============================================================
   Botcore Section
   ============================================================ */

.botcore-section {
	padding: var(--space-section) 4vw;
	text-align: center;
}

.botcore-inner {
	max-width: 50ch;
	margin: 0 auto;
}

.botcore-inner .section-lead {
	font-size: var(--text-lg);
	margin-bottom: var(--space-lg);
}

.botcore-inner .btn {
	margin-top: var(--space-lg);
	border-color: var(--text-cream);
	background: transparent;
	color: var(--text-cream);
	box-shadow: var(--shadow-sm) var(--accent-teal);
}

.botcore-inner .btn:hover {
	background: var(--text-cream);
	color: var(--text-dark);
	box-shadow: var(--shadow-md) var(--accent-red);
}

.botcore-avatar {
	width: 140px;
	height: 140px;
	margin: 0 auto var(--space-lg) auto;
	display: block;
}

/* ============================================================
   Packages List
   ============================================================ */

.packages-list {
	display: flex;
	flex-direction: column;
	gap: var(--space-md);
}

.package-item {
	border-bottom: var(--border-thin) solid var(--border-color);
	padding-bottom: var(--space-md);
}

.package-item--last {
	border-bottom: none;
	padding-bottom: 0;
}

.package-item__name {
	font-family: var(--font-display);
	font-size: var(--text-lg);
}

/* ============================================================
   Footer
   ============================================================ */

.footer {
	margin: var(--space-inset);
	padding: 6vw;
	display: flex;
	flex-direction: column;
	gap: var(--space-2xl);
	border: var(--border-thick) solid var(--text-dark);
	box-shadow: var(--shadow-md) var(--text-dark);
}

.footer-byline {
	max-width: 50ch;
	margin: 0 auto;
	text-align: center;
}

.footer-quote {
	font-size: var(--text-md);
	line-height: var(--leading-normal);
	margin-bottom: var(--space-md);
}

.footer-author {
	font-size: var(--text-sm);
	margin-bottom: var(--space-sm);
}

.footer-credits {
	font-size: var(--text-xs);
	opacity: 0.6;
	margin-bottom: 0.25rem;
}

.footer-bottom {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding-top: var(--space-lg);
	border-top: var(--border-thin) solid var(--border-dark);
}

.footer-links {
	display: flex;
	gap: var(--space-xs);
	align-items: center;
}

.footer-links a:hover {
	text-decoration: underline;
	text-decoration-thickness: var(--border-thin);
	text-underline-offset: 3px;
}

/* ============================================================
   Scroll Animations
   ============================================================ */

.animate-up {
	opacity: 0;
	transform: translateY(40px);
	transition:
		opacity 0.8s var(--ease-out),
		transform 0.8s var(--ease-out);
}

.animate-up.is-visible {
	opacity: 1;
	transform: translateY(0);
}

.delay-1 {
	transition-delay: 0.1s;
}
.delay-2 {
	transition-delay: 0.2s;
}
.delay-3 {
	transition-delay: 0.3s;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1024px) {
	.grid-2,
	.grid-3 {
		grid-template-columns: 1fr;
	}
	.grid-3 {
		gap: var(--space-lg);
	}
	.nav-links {
		display: none;
	}
	.footer-bottom {
		flex-direction: column;
		gap: 1rem;
		text-align: center;
	}
}

@media (max-width: 768px) {
	/* Prevent code blocks from blowing out the layout */
	.code-block {
		padding: var(--space-md);
		font-size: var(--text-xs);
		max-width: 100%;
		box-sizing: border-box;
	}

	.code-block pre {
		white-space: pre-wrap;
		word-break: break-word;
	}

	/* Constrain all sections and frames */
	.section {
		padding: var(--space-section) var(--space-inset);
		overflow-x: hidden;
	}

	/* Dark sections go edge-to-edge on mobile — no side gutters */
	.section--dark {
		padding-left: 0;
		padding-right: 0;
	}

	.section--dark > * {
		padding-left: var(--space-inset);
		padding-right: var(--space-inset);
	}

	/* Hero — more breathing room below nav */
	.hero {
		padding-top: 3.5rem;
	}

	.inset-frame {
		margin: 0;
		padding: var(--space-xl) 0;
		border-left: 0;
		border-right: 0;
	}

	.inset-frame > * {
		padding-left: var(--space-md);
		padding-right: var(--space-md);
	}

	/* Diagrams/images — full width, no shrinking */
	.diagram__svg {
		width: 100% !important;
		max-width: 100% !important;
		height: auto;
	}

	.diagram--judgment .diagram__svg {
		width: 100vw;
	}

	.hero-bg {
		width: 100vw;
		opacity: 0.3;
	}

	/* Cards — reduce padding */
	.structural-card {
		padding: var(--space-md);
	}

	/* Comparison cards — tighter */
	.comparison-card {
		padding: var(--space-sm);
	}

	/* Paragraph text — scale down */
	body {
		font-size: var(--text-md);
	}

	.section-lead {
		font-size: var(--text-md);
	}

	/* Error comparison grid gap */
	.error-comparison {
		gap: var(--space-md);
	}

	/* Footer */
	.footer {
		margin: var(--space-sm);
		padding: var(--space-xl);
	}

	/* Hero subtitle */
	.hero-subtitle {
		font-size: var(--text-lg);
	}

	/* Button — full width on mobile */
	.btn {
		width: 100%;
		text-align: center;
	}
}