/* EarWitness public site · design v3 (Exhibit, light).
   Uses the --ew-* tokens (/app/tokens.css) and self-hosted IBM Plex
   (/app/fonts/plex.css). Native CSS only; no fetches, no frameworks. */
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--ew-page); color-scheme: light; }
body { margin: 0; background: var(--ew-page); color: var(--ew-text); font: var(--ew-t-body-l); overflow-x: hidden; }
h1, h2, h3, p, ul, ol, figure, blockquote { margin: 0; }
a { color: var(--ew-action); text-underline-offset: 3px; }
a:hover { color: var(--ew-action-hover); }
:focus-visible { outline: var(--ew-focus-ring); outline-offset: var(--ew-focus-offset); }
.skip-link { position: absolute; left: var(--ew-s3); top: -48px; z-index: 50; background: var(--ew-sheet); color: var(--ew-text);
  padding: var(--ew-s2) var(--ew-s4); border: 1px solid var(--ew-border); border-radius: var(--ew-r-control); }
.skip-link:focus { top: var(--ew-s3); }
.eyebrow { font: var(--ew-t-label); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ew-text-2); }

/* -- Header: wordmark, centred nav, Sign in. Menu below 1024 px. -- */
.site-header { position: relative; display: flex; align-items: center; gap: var(--ew-s6); min-height: var(--ew-nav-h);
  padding: 0 var(--ew-s10); background: var(--ew-sheet); border-bottom: 1px solid var(--ew-border); }
.wordmark { color: var(--ew-text); text-decoration: none; font: 600 21px/1 var(--ew-serif); white-space: nowrap; }
.wordmark:hover { color: var(--ew-text); }
.site-nav { flex: 1; display: flex; justify-content: center; }
.site-nav ul { display: flex; gap: var(--ew-s2); padding: 0; list-style: none; }
.site-nav a { display: inline-flex; align-items: center; min-height: var(--ew-nav-h); padding: 0 var(--ew-s3); color: var(--ew-text-2);
  text-decoration: none; font: var(--ew-t-ui); }
.site-nav a:hover { color: var(--ew-text); }
.site-nav a[aria-current="page"] { color: var(--ew-text); font-weight: 600; box-shadow: inset 0 -3px 0 var(--ew-action); }
.nav-signin { display: inline-flex; align-items: center; min-height: var(--ew-target); color: var(--ew-text); font: var(--ew-t-ui); white-space: nowrap; }
.nav-signin:hover { color: var(--ew-action); }
.menu-button { display: none; align-items: center; gap: var(--ew-s2); min-height: var(--ew-target); padding: 0 var(--ew-s4);
  background: var(--ew-sheet); color: var(--ew-text); border: 1px solid var(--ew-control); border-radius: var(--ew-r-control);
  font: 600 14px/20px var(--ew-sans); cursor: pointer; }
.menu-icon { width: 16px; height: 12px; border-top: 2px solid currentColor; border-bottom: 2px solid currentColor; position: relative; }
.menu-icon::after { content: ""; position: absolute; left: 0; right: 0; top: 3px; border-top: 2px solid currentColor; }

main { display: block; }
.wrap { max-width: 1040px; margin: 0 auto; padding: var(--ew-s16) var(--ew-s10); display: flex; flex-direction: column; gap: var(--ew-s16); }
.wrap-narrow { max-width: 760px; gap: var(--ew-s6); }
h1 { font: var(--ew-t-title); }
h2 { font: 600 28px/34px var(--ew-serif); }
.lede { color: var(--ew-text-2); font: 400 17px/26px var(--ew-sans); max-width: 62ch; }
code, .pin { font-family: var(--ew-mono); font-size: 0.92em; }
mark { background: var(--ew-code-bg); color: var(--ew-text); padding: 0 2px; border-bottom: 1px solid var(--ew-code-border); }
mark.code { font: var(--ew-t-code); color: var(--ew-code); border-bottom: 0; padding: 1px 4px; border-radius: var(--ew-r-tag); }

/* -- Landing hero with Light Rays (static, decorative). -- */
.hero { position: relative; overflow: hidden; background: var(--ew-sheet); border-bottom: 1px solid var(--ew-border); }
.hero::before { content: ""; position: absolute; inset: -40% -20% 0; pointer-events: none;
  background: repeating-conic-gradient(from 180deg at 50% 0%, color-mix(in srgb, var(--ew-action) 7%, transparent) 0deg 3deg, transparent 3deg 11deg);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 0%, #000 30%, transparent 75%); mask-image: radial-gradient(ellipse 70% 80% at 50% 0%, #000 30%, transparent 75%); }
.hero-inner { position: relative; max-width: 900px; margin: 0 auto; padding: 88px var(--ew-s10) 80px; display: flex; flex-direction: column; align-items: center; gap: var(--ew-s5); text-align: center; }
.hero h1 { font: 600 52px/58px var(--ew-serif); letter-spacing: -0.01em; }
.hero .lede { font-size: 18px; line-height: 27px; max-width: 600px; }
.hero-note { font: var(--ew-t-meta); color: var(--ew-text-2); }
.cta-row { display: flex; flex-wrap: wrap; gap: var(--ew-s3); justify-content: center; }
.cta { display: inline-flex; align-items: center; min-height: 44px; padding: 0 var(--ew-s6); border-radius: var(--ew-r-control);
  background: var(--ew-action); color: var(--ew-text-inverse); text-decoration: none; font: 600 15px/22px var(--ew-sans); }
.cta:hover { background: var(--ew-action-hover); color: var(--ew-text-inverse); }

/* -- Landing sections: text beside its example. -- */
.feature { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--ew-s8) var(--ew-s10); align-items: start; }
.feature-stack { grid-template-columns: minmax(0, 1fr); gap: var(--ew-s5); }
.feature-text { display: flex; flex-direction: column; gap: var(--ew-s3); }
.feature-text > p:last-child { color: var(--ew-text-2); font: var(--ew-t-body); max-width: 60ch; }
.passage-card, .compare figure { background: var(--ew-sheet); border: 1px solid var(--ew-border); border-radius: var(--ew-r-card); padding: var(--ew-s5); display: flex; flex-direction: column; gap: var(--ew-s3); }
.passage-time { display: flex; align-items: baseline; gap: var(--ew-s3); }
.passage-clock { font: 500 40px/44px var(--ew-mono); }
.passage-label { font: var(--ew-t-meta); color: var(--ew-text-2); }
blockquote { font: var(--ew-t-quote); }
figcaption { font: var(--ew-t-meta); color: var(--ew-text-2); }
figcaption strong { color: var(--ew-text); font-weight: 600; }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: var(--ew-s3); }
.compare blockquote { order: 2; }
.caption { font: var(--ew-t-meta); color: var(--ew-text-2); }
.folders { list-style: none; padding: var(--ew-s3) 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--ew-s3); }
.folders li { position: relative; display: flex; flex-direction: column; gap: 2px; padding: var(--ew-s4) var(--ew-s3); background: var(--ew-sheet);
  border: 1px solid var(--ew-text); border-radius: 0 var(--ew-r-card) var(--ew-r-card) var(--ew-r-card); }
.folders li::before { content: ""; position: absolute; left: -1px; top: -9px; width: 45%; height: 9px; background: var(--ew-sheet);
  border: 1px solid var(--ew-text); border-bottom: 0; border-radius: var(--ew-r-card) var(--ew-r-card) 0 0; }
.folders strong { font: 600 16px/22px var(--ew-serif); }
.folders span { font: var(--ew-t-meta); color: var(--ew-text-2); }
.sources, .limits { display: flex; flex-direction: column; gap: var(--ew-s4); }
.section-lede { color: var(--ew-text-2); font: var(--ew-t-body); }
.source-grid { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--ew-s3); }
.source-card { display: flex; align-items: center; gap: var(--ew-s3); padding: var(--ew-s3); min-height: 72px; background: var(--ew-sheet);
  border: 1px solid var(--ew-border); border-radius: var(--ew-r-card); color: var(--ew-text); text-decoration: none; }
.source-card:hover { border-color: var(--ew-text); color: var(--ew-text); }
.source-card > span:last-child { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.source-card strong { font: 600 14px/20px var(--ew-sans); text-decoration: underline; text-underline-offset: 3px; }
.source-card > span:last-child > span { font: var(--ew-t-meta); color: var(--ew-text-2); }
.tile { flex: none; width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--ew-border-strong);
  border-radius: var(--ew-r-card); font: 600 16px/1 var(--ew-serif); color: var(--ew-text); }
.tint-0 { background: var(--ew-selected); }
.tint-2 { background: var(--ew-code-bg); }
.tint-4 { background: var(--ew-confirmed-bg); }
.limits > p:not(.limits-links) { color: var(--ew-text-2); max-width: 70ch; }
.limits-links, .doc-links { display: flex; flex-wrap: wrap; gap: var(--ew-s4); }

/* -- Document pages: side nav + one reading column. -- */
.doc { max-width: 1120px; margin: 0 auto; padding: var(--ew-s16) var(--ew-s10); display: grid; grid-template-columns: 220px minmax(0, 720px); gap: var(--ew-s10); }
.doc-nav ul { list-style: none; padding: 0; display: flex; flex-direction: column; }
.doc-nav a { display: flex; align-items: center; min-height: 46px; padding: 0 var(--ew-s3); color: var(--ew-text); text-decoration: none;
  font: var(--ew-t-ui); border-left: 3px solid transparent; }
.doc-nav a:hover { background: var(--ew-hover); }
.doc-nav a[aria-current="page"] { background: var(--ew-selected); border-left-color: var(--ew-action); font-weight: 600; }
.doc-body { display: flex; flex-direction: column; gap: var(--ew-s3); min-width: 0; }
.doc-body h1 { font: 600 40px/46px var(--ew-serif); }
.doc-body > .lede { margin-bottom: var(--ew-s3); }
.doc-body h2 { font: var(--ew-t-section); margin-top: var(--ew-s4); }
.doc-body p, .doc-body li { font: 400 16px/26px var(--ew-sans); overflow-wrap: break-word; }
.doc-body ul, .doc-body ol { padding-left: var(--ew-s6); display: flex; flex-direction: column; gap: var(--ew-s2); }
.tiers { display: grid; grid-template-columns: 1fr 1fr; gap: var(--ew-s3); margin-bottom: var(--ew-s2); }
.tier { padding: var(--ew-s4); background: var(--ew-sheet); border: 1px solid var(--ew-text); border-radius: var(--ew-r-card); display: flex; flex-direction: column; gap: var(--ew-s3); }
.tier-light { border-color: var(--ew-border-strong); }
.doc-body .tier p { font: var(--ew-t-ui); }
.tier-tag { display: inline-flex; align-items: center; gap: 6px; min-height: 26px; padding: 0 var(--ew-s2); border: 1px solid var(--ew-text);
  border-radius: var(--ew-r-tag); font: 600 12px/16px var(--ew-sans); }
.tier-light .tier-tag { border-color: var(--ew-border-strong); color: var(--ew-text-2); }
.tier-bars { display: inline-flex; gap: 2px; }
.tier-bars::before, .tier-bars::after { content: ""; width: 4px; height: 11px; border: 1px solid currentColor; }
.tier-bars.full::before, .tier-bars.full::after { background: currentColor; }
.tier-bars:not(.full)::before { background: currentColor; }

/* -- 404 -- */
.notfound .panel { background: var(--ew-sheet); border: 1px solid var(--ew-border); border-radius: var(--ew-r-card); padding: var(--ew-s5); display: flex; flex-direction: column; gap: var(--ew-s3); }
.notfound .panel h2 { font: var(--ew-t-section); }
.notfound .panel ul { padding-left: var(--ew-s5); display: flex; flex-direction: column; gap: var(--ew-s1); }

/* -- Footer -- */
.site-footer { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--ew-s4) var(--ew-s8); flex-wrap: wrap;
  padding: var(--ew-s6) var(--ew-s10); background: var(--ew-sheet); border-top: 1px solid var(--ew-border); }
.footer-text { display: flex; flex-direction: column; gap: var(--ew-s1); font: var(--ew-t-ui); color: var(--ew-text-2); }
.footer-note { font: var(--ew-t-meta); }
.site-footer ul { display: flex; flex-wrap: wrap; gap: 0 var(--ew-s4); padding: 0; list-style: none; }
.site-footer a { display: inline-flex; align-items: center; min-height: var(--ew-target); font: var(--ew-t-ui); }
.site-footer a[aria-current="page"] { font-weight: 600; }

@media (max-width: 1023px) {
  .site-header { flex-wrap: wrap; padding: 0 var(--ew-s6); gap: var(--ew-s4); }
  .wordmark { margin-right: auto; }
  .menu-button { display: inline-flex; }
  .site-nav { display: none; order: 3; flex-basis: 100%; }
  .site-nav[data-open="true"] { display: block; padding-bottom: var(--ew-s3); }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav a { min-height: 44px; width: 100%; }
  .site-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--ew-action); }
  .doc { grid-template-columns: minmax(0, 1fr); gap: var(--ew-s6); padding: var(--ew-s10) var(--ew-s6); }
  .doc-nav { border-bottom: 1px solid var(--ew-border); }
  .doc-nav ul { flex-direction: row; flex-wrap: wrap; }
  .doc-nav a { border-left: 0; border-bottom: 3px solid transparent; white-space: nowrap; }
  .doc-nav a[aria-current="page"] { border-bottom-color: var(--ew-action); }
  .wrap { padding: var(--ew-s12) var(--ew-s6); gap: var(--ew-s12); }
}
@media (max-width: 767px) {
  .feature, .compare, .tiers { grid-template-columns: minmax(0, 1fr); }
  .source-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 599px) {
  .site-header { min-height: var(--ew-nav-h-mobile); padding: 0 var(--ew-s4); }
  .wordmark { font-size: 19px; }
  .hero-inner { padding: 48px var(--ew-s4) 40px; }
  .hero h1 { font: 600 32px/38px var(--ew-serif); }
  .hero .lede { font-size: 16px; line-height: 24px; }
  .wrap, .doc { padding: var(--ew-s8) var(--ew-s4); }
  .wrap { gap: var(--ew-s10); }
  .doc-body h1 { font: 600 32px/38px var(--ew-serif); }
  h2 { font: 600 24px/30px var(--ew-serif); }
  .passage-clock { font-size: 32px; line-height: 36px; }
  .folders { gap: var(--ew-s2); }
  .site-footer { padding: var(--ew-s5) var(--ew-s4); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}