/* Case-study library chrome + components.
   Chrome (header/nav/tools dropdown/footer) is ported from home.css so the
   case-study pages and the /work/ index are unmistakably the same site. Case
   -study component styles (hero, pill, chips, architecture, CAR blocks, build
   list, index cards) follow. Generated pages link this file. Bump ?v= on edit. */

/* Palette and type stack come from /tokens.css (single source of truth). */
:root {
  --maxw: 1000px;            /* reading column for case-study content */
  --wide: 1180px;           /* nav + footer width, matches home.css chrome */
  --gut: clamp(20px, 5vw, 72px);
  --chrome-gut: clamp(20px, 5vw, 80px);
}
* { box-sizing: border-box; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink); font-family: var(--mono);
  font-size: 15px; line-height: 1.62; -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: var(--teal); text-underline-offset: 3px; }
.teal { color: var(--teal); }
a:focus-visible, button:focus-visible, .cta:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: 12px; left: 16px; z-index: 50; background: var(--bg); color: var(--teal);
  border: 1px solid var(--teal); border-radius: 7px; padding: 10px 16px; font-size: 13px;
  text-decoration: none; transform: translateY(-300%);
}
.skip-link:focus { transform: none; }

/* ---- chrome: header / nav (ported from home.css) ------------------------ */
header.site {
  position: sticky; top: 0; z-index: 30;
  background: linear-gradient(to bottom, rgba(10, 14, 26, .92), rgba(10, 14, 26, .78));
  backdrop-filter: blur(6px); transition: background .25s ease;
}
header.site.scrolled { background: rgba(10, 14, 26, .92); border-bottom: 1px solid var(--hair); }
.scroll-progress {
  position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--teal); transform: scaleX(0); transform-origin: 0 50%; pointer-events: none;
}
.nav { display: flex; align-items: center; gap: 18px; max-width: var(--wide); margin: 0 auto; padding: 14px var(--chrome-gut); }
.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; text-decoration: none; color: var(--ink); }
.brand svg { display: block; }
.brand b { font-size: 15.5px; font-weight: 700; letter-spacing: .03em; }
.brand span { color: var(--muted); font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: 13px; letter-spacing: .04em; text-decoration: none; transition: color .15s ease; }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  border: 1px solid var(--teal); color: var(--teal); padding: 7px 14px; border-radius: 7px;
  font-size: 11.5px; letter-spacing: .04em; text-decoration: none; transition: background .15s ease, color .15s ease;
}
.nav-cta:hover { background: var(--teal); color: var(--bg); }
/* tools dropdown */
.nav-dd { position: relative; display: flex; align-items: center; }
.nav-dd-toggle {
  background: none; border: 0; padding: 0; cursor: pointer; font-family: var(--mono);
  color: var(--muted); font-size: 13px; letter-spacing: .04em;
  display: inline-flex; align-items: center; gap: 5px; transition: color .15s ease;
}
.nav-dd-toggle:hover, .nav-dd.open .nav-dd-toggle { color: var(--ink); }
.nav-dd-toggle:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }
.dd-caret { font-size: 9px; transition: transform .2s ease; }
.nav-dd.open .dd-caret { transform: rotate(180deg); }
.nav-dd-menu {
  position: absolute; top: calc(100% + 12px); right: 0; min-width: 280px; max-width: 84vw;
  background: rgba(16, 20, 32, .98); backdrop-filter: blur(8px); border: 1px solid var(--hair);
  border-radius: 10px; padding: 8px; display: flex; flex-direction: column; gap: 2px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, .45); z-index: 40;
  max-height: calc(100vh - 90px); overflow-y: auto;
}
.nav-dd-menu::before { content: ''; position: absolute; left: 0; right: 0; top: -14px; height: 14px; }
.dd-group {
  margin: 10px 4px 4px; padding-top: 8px; border-top: 1px solid var(--hair);
  color: var(--muted); font-size: 10px; letter-spacing: .16em; text-transform: uppercase;
}
.dd-group:first-child { margin-top: 2px; padding-top: 0; border-top: 0; }
.dd-item { display: block; padding: 10px 12px; border-radius: 7px; text-decoration: none; transition: background .15s ease; }
.dd-item:hover { background: rgba(0, 212, 200, .08); }
.dd-item b { display: block; color: var(--teal); font-size: 13.5px; font-weight: 600; }
.dd-item span { display: block; color: var(--muted); font-size: 11.5px; margin-top: 3px; line-height: 1.4; }
.dd-item:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

/* ---- breadcrumb --------------------------------------------------------- */
.crumb { max-width: var(--maxw); margin: 0 auto; padding: 20px var(--gut) 0; font-size: 12px; letter-spacing: .03em; color: var(--muted); }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--teal); }
.crumb .sep { margin: 0 8px; opacity: .6; }
.crumb .here { color: var(--ink); }

/* ---- chrome: footer (ported from home.css) ------------------------------ */
footer.site { border-top: 1px solid var(--hair); padding: 26px 0; position: relative; z-index: 1; margin-top: 10px; }
.foot { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; max-width: var(--wide); margin: 0 auto; padding: 0 var(--chrome-gut); }
.foot .copy { color: var(--muted); font-size: 11.5px; letter-spacing: .03em; }
.foot .links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-left: auto; }
.foot .links a { color: var(--muted); font-size: 11.5px; text-decoration: none; }
.foot .links a:hover { color: var(--teal); }

/* small note carried out of the old page footer (anonymization / footnotes) */
.page-note { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut) 8px; }
.page-note p { color: var(--muted); font-size: 11.5px; letter-spacing: .02em; max-width: 74ch; margin: 0 0 8px; }

@media (max-width: 860px) {
  .nav { gap: 12px; padding-top: 10px; padding-bottom: 10px; }
  .brand b { display: none; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 11px; }
  .nav-cta { padding: 6px 10px; font-size: 11px; white-space: nowrap; }
}
@media (max-width: 480px) {
  .nav-cta { display: none; }
  .nav-links { margin-left: auto; gap: 12px; }
}

/* ---- case-study content (moved verbatim from build.mjs) ----------------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut); }
section { padding: clamp(46px, 8vw, 92px) 0; border-top: 1px solid var(--hair); }
section:first-of-type { border-top: 0; }
.eyebrow { color: var(--muted); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; margin: 0 0 20px; }
.eyebrow .tag { color: var(--teal); }
h1, h2 { font-weight: 800; letter-spacing: -.02em; line-height: 1.06; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(34px, 6.4vw, 66px); }
h1 .teal, .proof-quote .teal { color: var(--teal); }
h2 { font-size: clamp(21px, 3vw, 30px); letter-spacing: -.01em; }
.deck { color: var(--muted); font-size: clamp(15px, 1.6vw, 18px); line-height: 1.55; max-width: 62ch; margin: 26px 0 0; }
.deck strong { color: var(--ink); font-weight: 600; }
p { max-width: 68ch; } p .em { color: var(--ink); }
.hero { padding-top: clamp(34px, 6vw, 60px); }
.pill { display: inline-flex; align-items: center; gap: 8px; font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; padding: 6px 12px; border-radius: 999px; margin: 28px 0 0; }
.pill .dot { width: 7px; height: 7px; border-radius: 50%; }
.pill.ok { color: var(--ok); border: 1px solid rgba(79, 209, 139, .34); background: rgba(79, 209, 139, .08); }
.pill.ok .dot { background: var(--ok); }
.pill.dev { color: var(--teal); border: 1px solid rgba(0, 212, 200, .34); background: rgba(0, 212, 200, .08); }
.pill.dev .dot { background: var(--teal); }
.pill.beta { color: var(--gold); border: 1px solid rgba(255, 181, 71, .34); background: rgba(255, 181, 71, .08); }
.pill.beta .dot { background: var(--gold); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 30px 0 0; list-style: none; padding: 0; }
.chips li { font-size: 12.5px; letter-spacing: .02em; color: var(--ink); background: var(--panel); border: 1px solid var(--line); padding: 9px 14px; border-radius: 6px; }
.chips b { color: var(--gold); font-weight: 700; }
.hero-art { margin: 40px 0 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--panel); }
.hero-art img, .hero-art video { display: block; width: 100%; height: auto; }
.car { display: grid; gap: 22px; }
.block { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: clamp(22px, 3vw, 34px); }
.block .label { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; margin: 0 0 12px; }
.block.challenge .label { color: var(--gold); }
.block.action .label { color: var(--teal); }
.block.result .label { color: var(--ok); }
.block h3 { margin: 0 0 10px; font-size: 17px; font-weight: 700; letter-spacing: -.01em; }
.block p { margin: 0; color: var(--muted); } .block p .em { color: var(--ink); }
.arch { margin: 30px 0 0; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: clamp(24px, 4vw, 40px); }
.arch-row { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 10px; }
@media (max-width: 680px) { .arch-row { grid-template-columns: 1fr; } .arch .flow { transform: rotate(90deg); justify-self: center; } }
.node { border: 1px solid var(--line); border-radius: 8px; padding: 16px 14px; text-align: center; background: var(--bg); }
.node .n { font-size: 12.5px; font-weight: 700; color: var(--ink); letter-spacing: .02em; }
.node .s { font-size: 10.5px; color: var(--muted); margin-top: 5px; line-height: 1.4; }
.node.hi { border-color: rgba(0, 212, 200, .5); box-shadow: inset 0 0 0 1px rgba(0, 212, 200, .12); }
.node.hi .n { color: var(--teal); }
.flow { color: var(--teal); font-size: 12px; text-align: center; white-space: nowrap; }
.flow .lab { display: block; color: var(--muted); font-size: 9.5px; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 3px; }
.arch .watch { margin-top: 18px; font-size: 11.5px; color: var(--muted); text-align: center; }
.arch .watch b { color: var(--gold); }
.built { list-style: none; margin: 26px 0 0; padding: 0; }
.built li { display: grid; grid-template-columns: 20px 1fr; gap: 12px; align-items: baseline; padding: 14px 0; border-bottom: 1px solid var(--hair); color: var(--muted); }
.built li:last-child { border-bottom: 0; }
.built .k { color: var(--teal); } .built b { color: var(--ink); font-weight: 600; }
.proof-quote { font-size: clamp(18px, 2.4vw, 26px); line-height: 1.4; color: var(--ink); font-weight: 600; letter-spacing: -.01em; max-width: 28ch; }
.cta { display: inline-flex; align-items: center; gap: 10px; margin-top: 30px; font-size: 13px; color: var(--bg); background: var(--teal); padding: 13px 20px; border-radius: 8px; text-decoration: none; font-weight: 700; }
.cta:hover { background: var(--teal-2); }
:root.js-reveal .reveal { opacity: 0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease; }
:root.js-reveal .reveal.in { opacity: 1; transform: none; }
/* index */
.idx-hero { padding: clamp(40px, 7vw, 84px) 0 clamp(24px, 4vw, 48px); }
.idx-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 720px) { .idx-grid { grid-template-columns: 1fr 1fr; } }
.idx-card { display: block; text-decoration: none; color: inherit; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: border-color .2s ease, transform .2s ease; }
.idx-card:hover { border-color: var(--teal); transform: translateY(-2px); }
.idx-card img { display: block; width: 100%; height: auto; border-bottom: 1px solid var(--line); }
.idx-card .m { padding: 18px 20px 20px; }
.idx-card .st { font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 8px; }
.idx-card .st.ok { color: var(--ok); } .idx-card .st.dev { color: var(--teal); } .idx-card .st.beta { color: var(--gold); }
.idx-card h3 { margin: 0 0 6px; font-size: 16px; font-weight: 700; letter-spacing: -.01em; color: var(--ink); }
.idx-card p { margin: 0; font-size: 12.5px; color: var(--muted); line-height: 1.5; }
.idx-group { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); margin: 44px 0 18px; }