/* Hallmark · genre: editorial · macrostructure: Narrative Workflow · theme: Editorial
 * enrichment: none (typography only) · nav: N9 edge-aligned minimal · footer: Ft4 dense colophon
 * tone: editorial / technical · anchor hue: 75 warm · accent: brick oklch(47% 0.155 32)
 * axes: light paper · roman-serif display · warm accent
 * pre-emit critique: P5 H5 E5 S5 R5 V4
 * contrast: pass (40–41) · honest: pass (46) · chrome: pass (47) · tokens: pass (48)
 * responsive: pass (49) · icons: pass (30) · mobile: pass (34, 49, 50–57) · slop: pass (42–45)
 * Flat by instruction: no box-shadow, no gradient, no border-radius, no JS.
 */

@import url("tokens.css");

/* ---------------------------------------------------------------
   Reset — only what this page actually needs
   --------------------------------------------------------------- */

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

html {
	overflow-x: clip; /* clip, not hidden — hidden would kill sticky/fixed */
	-webkit-text-size-adjust: 100%;
}

body {
	overflow-x: clip;
	margin: 0;
	background: var(--color-paper);
	color: var(--color-ink);
	font-family: var(--font-body);
	font-size: var(--text-base);
	font-weight: var(--weight-body);
	line-height: 1.6;
	letter-spacing: var(--track-body);
	font-synthesis: none; /* never fake a weight or an italic */
	-webkit-font-smoothing: antialiased;
	padding-inline: max(0px, env(safe-area-inset-left));
}

h1,
h2,
h3,
p,
figure,
table {
	margin: 0;
}

/* Headings are roman. Always. Emphasis comes from weight, colour, and size —
   never from an italicised word inside an upright headline.
   One display face at one weight, everywhere. */
h1,
h2,
h3,
.display {
	font-family: var(--font-display);
	font-style: normal;
	font-weight: var(--weight-display);
	letter-spacing: var(--track-tight);
	overflow-wrap: anywhere; /* long compound words break rather than overflow */
	min-width: 0;
}

/* Uppercase micro-label. The ONE small-label treatment on the page.
   Not small-caps: the web builds of these faces ship no small-cap glyphs, so
   `font-variant-caps` silently degraded to wide-tracked lowercase — which read
   as a fourth font. Real uppercase renders identically everywhere. */
.u-label {
	font-family: var(--font-body);
	font-size: var(--text-sm);
	font-weight: var(--weight-emphasis);
	text-transform: uppercase;
	letter-spacing: var(--track-label);
	line-height: 1.3;
	color: var(--color-muted);
}

a {
	color: inherit;
}

/* Focus appears instantly. Never transitioned, never faded in. */
:focus-visible {
	outline: var(--rule-thick) solid var(--color-focus);
	outline-offset: 3px;
}

::selection {
	background: var(--color-accent);
	color: var(--color-paper);
}

/* ---------------------------------------------------------------
   Page frame — left-biased, not centred
   --------------------------------------------------------------- */

.wrap {
	max-width: 76rem;
	margin-inline: auto;
	padding-inline: var(--page-gutter);
}

/* Prose sits at reading measure and stays left-flush.
   The empty right margin is the composition, not an accident. */
.measure {
	max-width: var(--measure);
}

.lede {
	max-width: var(--measure);
	font-size: var(--text-md);
	line-height: 1.5;
	color: var(--color-muted);
}

.lede--spaced {
	margin-bottom: var(--space-xl);
}

/* Machine identifiers: tool names, repo names, flags. Outlier role one of two. */
.mono {
	font-family: var(--font-outlier);
	font-size: 0.95em;
	color: var(--color-ink);
}

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

/* Full-bleed hairline under the masthead — the one line that crosses the grid. */
.rule-bleed {
	border: 0;
	border-top: var(--rule-hair) solid var(--color-rule);
	margin: 0;
}

/* ---------------------------------------------------------------
   Nav · N9 edge-aligned minimal
   Wordmark hard-left, one destination hard-right, nothing between.
   The emptiness is the design; filling it makes this N1 with extra steps.
   --------------------------------------------------------------- */

.nav {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-lg);
	padding-block: var(--space-lg);
}

/* The wordmark is itself a package identifier, so it shares the mono role. */
.nav__wordmark {
	font-family: var(--font-outlier);
	font-size: var(--text-sm);
	font-weight: var(--weight-emphasis);
	letter-spacing: var(--track-body);
	text-decoration: none;
	white-space: nowrap;
}

/* C3 typographic link — STANDALONE only (nav, close row). A word, an arrow,
   a hairline. It sets its own size because it stands on its own line. */
.link {
	font-size: var(--text-sm);
	color: var(--color-accent);
	text-decoration: none;
	white-space: nowrap;
	border-bottom: var(--rule-hair) solid var(--color-rule);
	padding-bottom: var(--space-3xs);
	transition: border-color var(--dur-short) var(--ease-out);
}

.link:hover {
	border-bottom-color: var(--color-accent);
}

.link:active {
	color: var(--color-ink);
	border-bottom-color: var(--color-ink);
}

/* Links INSIDE running prose. These must inherit the paragraph's size and
   rhythm — a link that sets its own font-size mid-sentence is the tell.
   Underline comes from text-decoration so it tracks the baseline and the
   descenders instead of sitting in a box of its own. */
.link-inline {
	color: var(--color-accent);
	font-size: inherit;
	line-height: inherit;
	letter-spacing: inherit;
	white-space: nowrap;
	text-decoration: underline;
	text-decoration-color: var(--color-rule);
	text-decoration-thickness: var(--rule-hair);
	text-underline-offset: 0.18em;
	transition: text-decoration-color var(--dur-short) var(--ease-out);
}

.link-inline:hover {
	text-decoration-color: var(--color-accent);
}

.link-inline:active {
	color: var(--color-ink);
	text-decoration-color: var(--color-ink);
}

/* ---------------------------------------------------------------
   Hero · typographic. No image, no fill, no viewport-height trap.
   Height comes from the words. Bottom padding is heavier than top so the
   hero settles into the page rather than floating above it.
   --------------------------------------------------------------- */

.hero {
	padding-block: clamp(var(--space-2xl), 7vw, var(--space-3xl)) var(--space-4xl);
}

.hero__title {
	font-size: var(--text-display);
	line-height: 1.06;
	max-width: 16ch; /* holds the break between the two sentences */
	margin-bottom: var(--space-lg);
}

.hero__lede {
	margin-bottom: var(--space-xl);
}

/* The pipeline, stated once in the fold. The last stage is the human's,
   so it is the one thing in the fold wearing the accent. */
.hero__stages {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: var(--space-sm) var(--space-xl);
	margin: 0;
	padding: var(--space-lg) 0 0;
	border-top: var(--rule-hair) solid var(--color-rule);
	list-style: none;
	font-variant-numeric: tabular-nums;
}

.hero__stages li:last-child {
	color: var(--color-accent);
}

/* ---------------------------------------------------------------
   Sections · deliberately uneven vertical rhythm
   --------------------------------------------------------------- */

.section {
	padding-block: var(--space-3xl);
}

.section--tight {
	padding-block: var(--space-2xl) var(--space-3xl);
}

.section--loose {
	padding-block: var(--space-4xl) var(--space-3xl);
}

/* Section heads are a single stacked column, always.
   No label in a left column with the title beside it. */
.section__title {
	font-size: var(--text-2xl);
	line-height: 1.15;
	max-width: 24ch;
	margin-bottom: var(--space-lg);
}

.section__title--wide {
	max-width: 30ch;
}

.section__body p  {
	font-size: var(--text-md);
	line-height: 1.5;
	color: var(--color-muted);
	margin-top: var(--space-md);
}

/* ---------------------------------------------------------------
   Stages · the spine of the page
   The number lives inside the heading, so there is no eyebrow row and no
   tag column. Sequence is carried by a thick rule top and bottom.
   --------------------------------------------------------------- */

.stages {
	list-style: none;
	margin: 0;
	padding: 0;
	border-top: var(--rule-thick) solid var(--color-ink);
}

.stage {
	display: grid;
	gap: var(--space-sm);
	padding-block: var(--space-xl);
	border-bottom: var(--rule-hair) solid var(--color-rule);
}

.stage:last-child {
	border-bottom: var(--rule-thick) solid var(--color-ink);
}

.stage__title {
	font-size: var(--text-lg);
	line-height: 1.2;
}

.stage__num {
	font-variant-numeric: tabular-nums;
	color: var(--color-accent);
	margin-inline-end: var(--space-sm);
}

.stage__body {
	max-width: var(--measure);
	color: var(--color-muted);
}

/* Wide viewports: title left, prose right. Heading and body — not a label
   and a heading, which is the pattern that reads as templated. */
@media (min-width: 60rem) {
	.stage {
		grid-template-columns: minmax(0, 18rem) minmax(0, 1fr);
		gap: var(--space-2xl);
		align-items: baseline;
	}
}

/* ---------------------------------------------------------------
   Tools · F3 tabular spec sheet
   Hairline rules between rows, tabular numerics, not a card in sight.
   --------------------------------------------------------------- */

.spec {
	width: 100%;
	border-collapse: collapse;
	font-variant-numeric: tabular-nums;
	text-align: left;
}

.spec th,
.spec td {
	padding: var(--space-md) var(--space-md) var(--space-md) 0;
	vertical-align: baseline;
	border-bottom: var(--rule-hair) solid var(--color-rule);
}

.spec thead th {
	border-bottom: var(--rule-thick) solid var(--color-ink);
}

/* Tool names are machine identifiers, so they carry the mono role — but at the
   same size as the cells beside them. A smaller font AND a different family in
   one row reads as two designs; family alone reads as one deliberate register. */
.spec tbody th {
	font-family: var(--font-outlier);
	font-size: var(--text-base);
	font-weight: var(--weight-emphasis);
	letter-spacing: var(--track-body);
	color: var(--color-ink);
	white-space: nowrap;
}

.spec td {
	color: var(--color-muted);
}

@media (hover: hover) and (pointer: fine) {
	.spec tbody tr {
		transition: background-color var(--dur-short) var(--ease-out);
	}
	.spec tbody tr:hover {
		background-color: var(--color-paper-2);
	}
}

/* Under ~48rem a three-column table stops being a table.
   Rows become blocks; the column name is carried by data-label. */
@media (max-width: 48rem) {
	.spec thead {
		display: none;
	}
	.spec,
	.spec tbody,
	.spec tbody tr,
	.spec tbody th,
	.spec tbody td {
		display: block;
		width: 100%;
	}
	.spec tbody tr {
		padding-block: var(--space-lg);
		border-bottom: var(--rule-hair) solid var(--color-rule);
	}
	.spec tbody th,
	.spec tbody td {
		padding: 0;
		border-bottom: 0;
	}
	.spec tbody th {
		font-size: var(--text-base);
		margin-bottom: var(--space-2xs);
		white-space: normal;
	}
	.spec td[data-label]::before {
		content: attr(data-label) " — ";
		text-transform: uppercase;
		letter-spacing: var(--track-label);
		color: var(--color-neutral);
	}
}

/* ---------------------------------------------------------------
   The gate · one statement, set large, no box around it
   --------------------------------------------------------------- */

.gate {
	padding-block: var(--space-3xl);
	border-block: var(--rule-hair) solid var(--color-rule);
}

.gate__line {
	font-size: var(--text-2xl);
	line-height: 1.15;
	max-width: 20ch;
	margin-bottom: var(--space-lg);
}

.gate__body p  {
	font-size: var(--text-md);
	line-height: 1.5;
	color: var(--color-muted);
	margin-top: var(--space-md);
}



/* ---------------------------------------------------------------
   Stack · a plain description list, not a logo wall
   --------------------------------------------------------------- */

.facts {
	margin: 0;
	border-top: var(--rule-hair) solid var(--color-rule);
}

.facts > div {
	display: grid;
	gap: var(--space-2xs) var(--space-xl);
	padding-block: var(--space-md);
	border-bottom: var(--rule-hair) solid var(--color-rule);
}

.facts dt {
	line-height: 1.4;
}

.facts dd {
	margin: 0;
	max-width: var(--measure);
}

@media (min-width: 48rem) {
	.facts > div {
		grid-template-columns: minmax(0, 11rem) minmax(0, 1fr);
		align-items: baseline;
	}
}

/* ---------------------------------------------------------------
   Close · typographic links (C3). There is no filled button on this page.
   --------------------------------------------------------------- */

.close {
	padding-block: var(--space-4xl) var(--space-3xl);
}

.close__line {
	font-size: var(--text-2xl);
	line-height: 1.2;
	max-width: 22ch;
	margin-bottom: var(--space-lg);
}

.close__links {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--space-lg);
}

.close__links .link {
	font-size: var(--text-base);
}

/* ---------------------------------------------------------------
   Footer · Ft4 dense typographic colophon
   Set in the body face, not mono. A whole section in the outlier family was
   the single biggest source of the page feeling like several designs.
   Density comes from the measure and the leading, not from a third font.
   --------------------------------------------------------------- */

.colophon {
	border-top: var(--rule-thick) solid var(--color-ink);
	padding-block: var(--space-xl) var(--space-2xl);
	padding-bottom: max(var(--space-2xl), env(safe-area-inset-bottom));
}

.colophon p {
	max-width: var(--measure-fine);
	line-height: 1.7;
	color: var(--color-muted);
}

/* ---------------------------------------------------------------
   Touch + reduced motion
   Only standalone affordances get the 44px target — inline prose links
   keep their line rhythm.
   --------------------------------------------------------------- */

@media (pointer: coarse) {
	.nav__wordmark,
	.nav__cta,
	.close__links .link {
		display: inline-flex;
		align-items: center;
		min-height: var(--touch-target);
	}
}

/* A reduced-motion opt-out has to beat every other declaration on the page.
   That is the one place !important is the correct tool. */
@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		/* biome-ignore lint/complexity/noImportantStyles: must override all motion */
		animation-duration: 0.01ms !important;
		/* biome-ignore lint/complexity/noImportantStyles: must override all motion */
		animation-iteration-count: 1 !important;
		/* biome-ignore lint/complexity/noImportantStyles: must override all motion */
		transition-duration: 0.01ms !important;
	}
}