/*
 * Plain Words — the reading surface.
 *
 * Token values are lifted verbatim from apps/website/index.html so the
 * publication and the launch page are visibly the same product. Nothing here
 * is required for the content to be readable: every page is complete,
 * semantic HTML, and this file only makes it pleasant.
 */

:root {
  --paper: #fafaf7;
  --ink: #14181c;
  --bg: #fafaf7;
  --surface: #ffffff;
  --surface-alt: #f2f1ea;
  --wash: #f0fdf9;
  --wash-border: rgba(14, 122, 108, 0.18);
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.14);
  --text: #14181c;
  --text-dim: rgba(0, 0, 0, 0.55);
  --text-faint: rgba(0, 0, 0, 0.4);
  --accent: #0e7a6c;
  --accent-deep: #0b5f54;
  --accent-soft: rgba(14, 122, 108, 0.1);
  --danger: #ef4444;
  --serif-bg: #f7f5ee;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --shadow-card: 0 2px 10px rgba(14, 122, 108, 0.07);
  --measure: 68ch;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-deep);
  text-underline-offset: 2px;
}
a:hover {
  color: var(--accent);
}

/* ————— frame ————— */

.masthead {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.masthead-inner,
.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}
.masthead-inner {
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 14px;
  padding-bottom: 14px;
}
.masthead .title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
}
.masthead .tagline {
  color: var(--text-dim);
  font-size: 14px;
}
.masthead nav {
  margin-left: auto;
  display: flex;
  gap: 16px;
  font-size: 14px;
  font-family: var(--font-display);
}

.breadcrumbs {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px 0;
  font-size: 13px;
  color: var(--text-dim);
}
.breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumbs li + li::before {
  content: '/';
  color: var(--text-faint);
  margin-right: 6px;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 8px 20px 64px;
}
article,
.prose {
  max-width: var(--measure);
}

/* ————— type ————— */

h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.4vw, 40px);
  line-height: 1.18;
  font-weight: 500;
  margin: 18px 0 0;
  max-width: 22ch;
  max-width: min(22ch, 100%);
}
h2 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 27px);
  line-height: 1.25;
  font-weight: 500;
  margin: 44px 0 12px;
}
h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  margin: 30px 0 8px;
}
p {
  margin: 0 0 16px;
}
ul,
ol {
  margin: 0 0 18px;
  padding-left: 22px;
}
li {
  margin-bottom: 6px;
}
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-alt);
  padding: 1px 5px;
  border-radius: 4px;
}
pre {
  background: var(--surface-alt);
  padding: 14px 16px;
  border-radius: 10px;
  overflow-x: auto;
}
pre code {
  background: none;
  padding: 0;
}
blockquote {
  margin: 0 0 18px;
  padding: 2px 0 2px 18px;
  border-left: 3px solid var(--wash-border);
  color: var(--text-dim);
  font-family: var(--font-serif);
}
hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 32px 0;
}

/* ————— tables ————— */

.table-scroll {
  overflow-x: auto;
  margin: 0 0 22px;
  -webkit-overflow-scrolling: touch;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}
caption {
  text-align: left;
  color: var(--text-dim);
  font-size: 13px;
  padding-bottom: 8px;
}
th,
td {
  text-align: left;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
thead th {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
}
tbody tr:last-child td {
  border-bottom: 0;
}

/* ————— article furniture ————— */

.bluf {
  background: var(--wash);
  border: 1px solid var(--wash-border);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 22px 0;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.5;
}
.bluf p {
  margin: 0;
}

.byline {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  font-size: 14px;
  color: var(--text-dim);
  margin: 14px 0 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.byline .reviewed {
  color: var(--accent-deep);
}

.kicker {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0;
}

.callout {
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 26px 0;
  background: var(--surface);
}
.callout h2,
.callout h3 {
  margin-top: 0;
}
.callout.experience {
  background: var(--serif-bg);
  border-color: var(--line);
  font-family: var(--font-serif);
}
.callout.warn {
  border-color: rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.04);
}
.callout.method {
  background: var(--surface-alt);
  border-color: var(--line);
}

.faq dt {
  font-family: var(--font-display);
  font-weight: 500;
  margin-top: 18px;
}
.faq dd {
  margin: 6px 0 0;
}

.sources {
  font-size: 15px;
}
.sources li {
  margin-bottom: 10px;
}
.sources .kind {
  color: var(--text-faint);
  font-size: 13px;
}

.changelog {
  font-size: 14px;
  color: var(--text-dim);
}

.authorbox {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding-top: 22px;
  font-size: 15px;
}

.footer-line {
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 18px;
  font-size: 15px;
  color: var(--text-dim);
}

.related ul {
  list-style: none;
  padding: 0;
}

/* ————— hubs and cards ————— */

.card-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 2px;
}
.card-list li {
  border-top: 1px solid var(--line);
  padding: 16px 0;
  margin: 0;
}
.card-list a {
  font-family: var(--font-serif);
  font-size: 19px;
  text-decoration: none;
}
.card-list .meta {
  display: block;
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 4px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}
.pill-row li {
  margin: 0;
}
.pill-row a {
  display: inline-block;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 14px;
  text-decoration: none;
  background: var(--surface);
}
.pill-row a:hover {
  border-color: var(--accent);
}

/* ————— tool ————— */

.tool {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  padding: 20px;
  margin: 24px 0;
  box-shadow: var(--shadow-card);
}
.tool .fields {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
}
.tool label {
  display: block;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.tool input,
.tool select {
  font: inherit;
  font-size: 16px;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  min-width: 8rem;
}
.tool .result {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.tool .result .headline {
  font-family: var(--font-serif);
  font-size: 21px;
}

footer.site {
  border-top: 1px solid var(--line);
  background: var(--surface);
  margin-top: 40px;
}
footer.site .wrap {
  padding-top: 26px;
  padding-bottom: 40px;
  font-size: 14px;
  color: var(--text-dim);
}
footer.site nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 10px;
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 12px;
  top: 12px;
  background: var(--surface);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 10;
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }
  .masthead nav {
    margin-left: 0;
    width: 100%;
  }
}