/*
 * Misinfo Trace — site styles.
 *
 * Every colour below is listed in scripts/check-contrast.mjs; add a pair there
 * before a new colour or combination goes in here. The yellow (--marker) is
 * for graphics only — the logo mark, the hero diagram's claim node and the
 * context-distorting sparkline — never behind text.
 *
 * No style attributes anywhere: the Content-Security-Policy in src/_headers
 * allows styles from this file only.
 */

@font-face {
  font-family: "Newsreader";
  src: url("/assets/fonts/newsreader-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("/assets/fonts/newsreader-latin-400-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("/assets/fonts/newsreader-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Public Sans";
  src: url("/assets/fonts/public-sans-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Public Sans";
  src: url("/assets/fonts/public-sans-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light;

  --paper: #f2f3ef;
  --band: #e9ebe6;
  --card: #fbfbf8;
  --ink: #1a1d1c;
  --text: #2e3331;
  --slate: #535956;
  --rule: #cdd1cc;
  --marker: #f4df4e;
  --underline: #8a918d;
  --on-ink: #f2f3ef;
  --on-ink-muted: #cdd1cc;

  --font-display: "Newsreader", Georgia, "Times New Roman", serif;
  --font-body: "Newsreader", Georgia, "Times New Roman", serif;
  --font-ui: "Public Sans", "Helvetica Neue", Arial, sans-serif;
  --track: -0.012em;

  --gutter: clamp(20px, 5vw, 64px);
  --section-pad: clamp(64px, 8vw, 112px);
}

/* ── Base ─────────────────────────────────────────────────────────────── */

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

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

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: var(--track);
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

figure,
dl,
dd {
  margin: 0;
}

svg {
  max-width: 100%;
}

a {
  color: var(--ink);
  text-decoration-color: var(--underline);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 4px;
}

a:hover {
  text-decoration-color: var(--ink);
  text-decoration-thickness: 2.5px;
}

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

/* The skip link moves focus to <main>, which is not itself interactive. */
main:focus {
  outline: none;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--on-ink);
  font-family: var(--font-ui);
  font-weight: 600;
}

.skip-link:focus {
  top: 12px;
}

.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.scroll-x {
  overflow-x: auto;
}

/* ── Shared type and controls ─────────────────────────────────────────── */

.eyebrow {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  color: var(--slate);
}

.lede {
  max-width: 34em;
  font-size: clamp(19px, 1.6vw, 22px);
  line-height: 1.55;
  color: var(--text);
}

.small-copy {
  font-size: 17px;
  color: var(--text);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 26px;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--on-ink);
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  background: #000000;
  color: var(--on-ink);
}

.button--small {
  min-height: 44px;
  padding: 0 18px;
  font-size: 15px;
}

.button--outline {
  background: transparent;
  color: var(--ink);
}

.button--outline:hover {
  background: var(--ink);
  color: var(--on-ink);
}

.link-strong {
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 600;
}

.link-strong--large {
  align-self: flex-start;
  font-size: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 28px;
}

.tag {
  padding: 2px 6px;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
}

.note-tag {
  align-self: flex-start;
  padding: 4px 10px;
  border: 1px dashed var(--slate);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
}

.outcomes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
}

.outcomes li {
  padding: 3px 8px;
  border: 1px solid var(--ink);
}

/* ── Header ───────────────────────────────────────────────────────────── */

.site-header {
  position: relative;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 18px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 500;
  letter-spacing: var(--track);
  text-decoration: none;
}

.wordmark .mark {
  flex: none;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 26px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
}

.site-nav__list a:not(.button) {
  text-decoration: none;
}

.site-nav__list a:not(.button):hover {
  text-decoration: underline;
}

.menu-button {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

@media (max-width: 860px) {
  .js .menu-button {
    display: inline-flex;
  }

  .js .site-nav__list {
    display: none;
  }

  .js .site-nav.is-open .site-nav__list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--gutter) 20px;
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
    font-size: 17px;
  }

  .js .site-nav.is-open .site-nav__list a:not(.button) {
    display: block;
    padding: 12px 0;
  }

  .js .site-nav.is-open .site-nav__cta {
    margin-top: 8px;
  }

  .js .site-nav.is-open .site-nav__cta .button {
    width: 100%;
  }
}

/* ── Hero ─────────────────────────────────────────────────────────────── */

.hero__inner {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 4vw, 56px);
  padding-block: clamp(48px, 7vw, 96px) clamp(56px, 8vw, 112px);
}

.hero__heading {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero__title {
  font-size: clamp(44px, 6.4vw, 92px);
  line-height: 1.04;
}

.hero__body {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 40px 72px;
}

.hero__copy {
  flex: 1 1 340px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.hero__figure {
  flex: 1.6 1 520px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Scales to fit rather than scrolling sideways, so it reflows at 320px
   (400% zoom) — zoom enlarges its labels along with everything else. */
.diagram {
  display: block;
  width: 100%;
  height: auto;
}

.diagram .dg-label {
  font-family: var(--font-ui);
}

.diagram .dg-quote {
  font-family: var(--font-body);
}

.figure-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.5;
}

/* ── Sections ─────────────────────────────────────────────────────────── */

.section {
  border-top: 1px solid var(--rule);
}

.section--band {
  background: var(--band);
}

.section--strong {
  border-top: 2px solid var(--ink);
}

.section__inner {
  display: flex;
  flex-direction: column;
  gap: 48px;
  padding-block: var(--section-pad);
}

.section__inner--split {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 40px 72px;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.section-head--aside {
  flex: 1 1 300px;
}

.section-head--aside .small-copy {
  max-width: 24em;
}

.section-title {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.05;
}

.section-title--large {
  font-size: clamp(38px, 5vw, 68px);
  line-height: 1.02;
}

.split {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 72px;
}

.split > * {
  flex: 1 1 380px;
  min-width: 0;
}

.split--end {
  align-items: flex-end;
}

.body-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 36em;
}

.body-copy--narrow {
  max-width: 32em;
}

/* The problem */

.chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 0;
  padding: 20px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  list-style: none;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.chain li:not(.chain__arrow) {
  padding: 4px 10px;
  border: 1px solid var(--ink);
}

.chain__arrow {
  color: var(--slate);
}

.kinds {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: 40px;
}

.kind {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kind__title {
  font-size: 25px;
}

/* What we're building */

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  border-top: 2px solid var(--ink);
}

.pillar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 28px 8px 0;
}

.pillar__title {
  font-size: 28px;
}

.split--compare {
  gap: 32px 72px;
  padding-top: 16px;
}

.split--compare > .compare-intro {
  flex: 1 1 300px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.split--compare > .compare-wrap {
  flex: 2 1 520px;
}

.pull {
  padding-top: 6px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: var(--track);
}

/* No minimum width: at narrow widths the cells wrap instead of the table
   scrolling sideways. */
.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 16px;
  line-height: 1.45;
}

.compare thead th {
  padding: 0 16px 12px 0;
  border-bottom: 2px solid var(--ink);
  color: var(--slate);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  text-align: left;
}

.compare thead td {
  border-bottom: 2px solid var(--ink);
}

.compare thead .compare__ours {
  color: var(--ink);
}

.compare tbody th {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  vertical-align: top;
}

.compare tbody td {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.compare__theirs {
  color: var(--slate);
}

/* How it works */

.steps {
  flex: 2 1 560px;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 20px;
}

.step__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
}

.step__line {
  flex: 1;
  width: 1.5px;
  background: var(--ink);
}

.step__body {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 24px;
  padding: 5px 0 28px;
}

.step__body--last {
  padding-bottom: 0;
}

.step__name {
  flex: 0 0 150px;
  font-size: 23px;
}

.step__text {
  flex: 1 1 280px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  color: var(--text);
  font-size: 17px;
}

/* Same standard */

/* Source order is the reading order at every width: the two paths, then the
   join, then the assessment. Nothing is placed or reordered by CSS. */
.mirror {
  display: flex;
  align-items: stretch;
  gap: 12px;
}

.mirror__paths {
  flex: 2.25 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mirror__path {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 32px minmax(0, 1.25fr);
  align-items: center;
  gap: 12px;
}

.mirror__position {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  border: 1.5px solid var(--ink);
}

.mirror__label {
  color: var(--slate);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
}

.mirror__claim {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.3;
}

.mirror__arrow {
  font-size: 24px;
  text-align: center;
}

.mirror__arrow--down {
  display: none;
}

.mirror__method {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px;
  background: var(--ink);
  color: var(--on-ink);
}

.mirror__method-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
}

.mirror__method-list {
  color: var(--on-ink-muted);
  font-family: var(--font-ui);
  font-size: 13px;
}

.mirror__join {
  flex: 0 0 40px;
  align-self: stretch;
  display: block;
  width: 40px;
  height: auto;
}

.mirror__assess {
  flex: 1.2 1 0;
  min-width: 0;
  align-self: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 24px;
  border: 2px solid var(--ink);
  background: var(--card);
}

.mirror__assess-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: var(--track);
}

.mirror__note {
  color: var(--slate);
  font-size: 15px;
}

@media (max-width: 860px) {
  .mirror {
    flex-direction: column;
  }

  .mirror__path {
    grid-template-columns: minmax(0, 1fr);
  }

  .mirror__path .mirror__arrow {
    transform: rotate(90deg);
    justify-self: center;
  }

  .mirror__join {
    display: none;
  }

  .mirror__arrow--down {
    display: block;
  }

  .mirror__assess {
    align-self: stretch;
  }
}

/* Research principles */

.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 36px 48px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.principles li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 16px;
  border-top: 1px solid var(--ink);
}

.principles__word {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 500;
  letter-spacing: var(--track);
  line-height: 1.2;
}

.principles__over {
  color: var(--slate);
  font-size: 21px;
  font-style: italic;
}

/* What this project is not */

.concerns {
  flex: 2 1 560px;
  display: flex;
  flex-direction: column;
}

.concerns > div {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 32px;
  padding: 20px 0;
  border-top: 1px solid var(--ink);
}

.concerns > div:last-child {
  border-bottom: 1px solid var(--ink);
}

.concerns dt {
  flex: 1 1 260px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.3;
}

.concerns dd {
  flex: 1 1 260px;
  color: var(--text);
  font-size: 17px;
}

/* Current research */

.status-key {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text);
  font-size: 15px;
}

.status-key li {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-key .status {
  flex: 0 0 116px;
  text-align: center;
}

.status {
  align-self: flex-start;
  padding: 3px 8px;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
}

.status--researching {
  background: var(--ink);
  color: var(--on-ink);
}

.status--planned {
  border-style: dashed;
  border-color: var(--slate);
  color: var(--slate);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  border: 1px solid var(--ink);
  background: var(--card);
}

.card--planned {
  border-style: dashed;
  border-color: var(--slate);
  background: transparent;
}

.card__title {
  font-size: 25px;
}

.card__text {
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
}

/* Get involved */

.involve {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
  gap: 48px 72px;
}

.involve__path {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.involve__path .small-copy {
  max-width: 30em;
}

/* ── Forms ────────────────────────────────────────────────────────────── */

.field-label {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
}

.field-optional {
  color: var(--slate);
  font-weight: 500;
}

.input {
  min-height: 52px;
  padding: 0 16px;
  border: 1.5px solid var(--ink);
  border-radius: 0;
  background: var(--card);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
}

.input--area {
  min-height: 180px;
  padding: 12px 16px;
  line-height: 1.5;
  resize: vertical;
}

.signup {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 480px;
}

.signup__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.signup__row .input {
  flex: 1 1 220px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 560px;
  padding-block: 8px var(--section-pad);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ── Inner pages ──────────────────────────────────────────────────────── */

.page-header__inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-block: clamp(48px, 7vw, 96px) 48px;
}

.page-header--short .page-header__inner {
  padding-bottom: var(--section-pad);
}

.page-title {
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.05;
}

.prose {
  max-width: 40em;
  padding-bottom: var(--section-pad);
}

.prose h2 {
  margin: 2em 0 0.6em;
  font-size: clamp(28px, 3vw, 34px);
  line-height: 1.15;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p + p,
.prose ul + p,
.prose p + ul {
  margin-top: 1em;
}

.prose ul {
  margin: 0;
  padding-left: 1.2em;
}

.prose li + li {
  margin-top: 0.5em;
}

/* ── Footer ───────────────────────────────────────────────────────────── */

.site-footer {
  background: var(--ink);
  color: var(--on-ink);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-block: 48px 56px;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.wordmark--inverse {
  color: var(--on-ink);
}

.site-footer__tagline {
  color: var(--on-ink-muted);
  font-size: 17px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
}

.site-footer a {
  color: var(--on-ink);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
  text-decoration-color: var(--on-ink);
}

/* currentColor is the link's own text colour, which by construction
   contrasts with the dark footer it sits on. */
.site-footer :focus-visible {
  outline-color: currentColor;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}