/* ------------------------------------------------------------------
   case.css - case-study pages. Loaded after ../style.css, which
   supplies the tokens, type scale, .shell, .wash-* and .mono.
   ------------------------------------------------------------------ */

body{background:var(--paper)}

/* a narrower measure than the index: these pages are read, not scanned */
.case-hero .shell,
.case-body .shell,
.case-next .shell,
.case-foot .shell{max-width:920px}

/* ---------- nav ---------- */
.case-nav{
  position:sticky;top:0;z-index:50;
  background:var(--white);
  border-bottom:1px solid var(--hair);
}
.case-nav-in{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;
}
.case-nav .brand{font-size:20px;font-weight:500;letter-spacing:-.01em;color:var(--ink);text-decoration:none}
.case-nav .brand-mark{font-size:18px;line-height:1}

/* ---------- hero ---------- */
.case-hero{padding:56px 0 0}
.case-cover{
  position:relative;height:150px;border-radius:8px;
  border:1px solid var(--hair);
  display:flex;align-items:flex-start;justify-content:space-between;
  padding:16px 18px;margin-bottom:40px;
}
.case-cover .mono{color:rgba(0,0,0,.72)}
.case-cover .cover-num{
  position:absolute;right:18px;bottom:0;
  font-family:var(--mono);font-size:78px;font-weight:500;
  line-height:.92;letter-spacing:-.05em;color:rgba(0,0,0,.14);
  user-select:none;
}
.case-title{margin-bottom:14px}
.case-kicker{font-size:19px;font-weight:500;color:var(--ink);margin-bottom:18px}
.case-hero .lede{max-width:68ch}

.case-meta{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--hair);border:1px solid var(--hair);
  margin-top:40px;
}
.case-meta > div{background:var(--white);padding:16px 18px}
.case-meta dt{
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--gray-3);margin-bottom:6px;
}
.case-meta dd{margin:0;font-size:15px;font-weight:500;color:var(--ink);line-height:1.35}

/* ---------- body ---------- */
.case-body{padding-top:72px;padding-bottom:96px}
.case-sec{margin-bottom:56px}
.case-sec:last-child{margin-bottom:0}
.case-h2{
  font-size:26px;line-height:1.2;letter-spacing:-.01em;font-weight:500;
  color:var(--ink);margin-bottom:18px;
  padding-bottom:12px;border-bottom:1px solid var(--hair);
}
.case-sec p{font-size:17px;line-height:1.62;color:var(--gray);margin-bottom:16px;max-width:70ch}
.case-sec p:last-child{margin-bottom:0}
.case-sec p b{color:var(--ink);font-weight:600}
.case-sec code{
  font-family:var(--mono);font-size:.88em;
  background:var(--white);border:1px solid var(--hair);
  padding:1px 5px;border-radius:2px;color:var(--ink);
}

.case-list{
  list-style:none;margin:0 0 16px;padding:0;
  display:flex;flex-direction:column;gap:12px;max-width:70ch;
}
.case-list li{
  position:relative;padding-left:22px;
  font-size:16px;line-height:1.55;color:var(--gray);
}
.case-list li::before{
  content:"";position:absolute;left:2px;top:.6em;
  width:6px;height:6px;background:var(--ink);opacity:.55;
}
.case-list li b{color:var(--ink);font-weight:600}

/* ---------- stat strip ---------- */
.case-stats{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1px;
  background:var(--hair);border:1px solid var(--hair);
  margin:26px 0 24px;
}
.case-stats > div{background:var(--white);padding:18px 18px 16px;display:flex;flex-direction:column;gap:6px}
.cs-num{font-size:30px;font-weight:500;letter-spacing:-.02em;line-height:1.05;color:var(--ink)}
.cs-lab{font-size:13px;line-height:1.4;color:var(--gray)}

/* ---------- next / footer ---------- */
.case-next{
  padding:56px 0;
  border-top:1px solid var(--hair);
  background:var(--white);
}
.case-next-lead{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--gray-3);margin-bottom:10px;
}
.case-next-link{
  font-size:30px;font-weight:500;letter-spacing:-.02em;
  color:var(--ink);text-decoration:none;
  display:inline-flex;align-items:baseline;gap:12px;
}
.case-next-link:hover{color:var(--link)}
.case-next-link .arr{transition:transform .2s var(--ease-spring);display:inline-block}
.case-next-link:hover .arr{transform:translateX(4px)}
.case-next-alt{margin-top:18px}

.case-foot{
  padding:40px 0 56px;
  border-top:1px solid var(--hair);
  font-size:14px;color:var(--gray);
}
.case-foot p{margin:0 0 6px}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .case-meta{grid-template-columns:repeat(2,1fr)}
  .case-stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
  .shell{padding-left:22px;padding-right:22px}
  .case-hero{padding-top:40px}
  .case-cover{height:120px}
  .case-cover .cover-num{font-size:58px}
  .case-body{padding-top:56px;padding-bottom:72px}
  .case-h2{font-size:22px}
  .case-sec p{font-size:16px}
  .case-next-link{font-size:24px}
}
@media (max-width:460px){
  .case-meta{grid-template-columns:1fr}
  .case-stats{grid-template-columns:1fr}
}

/* ---------- data table ---------- */
.case-table-wrap{
  overflow-x:auto;margin:26px 0 10px;
  border:1px solid var(--hair);background:var(--white);
}
.case-table{border-collapse:collapse;width:100%;min-width:520px}
.case-table th,
.case-table td{
  text-align:left;padding:11px 14px;
  font-size:14px;line-height:1.4;color:var(--gray);
  border-bottom:1px solid var(--hair);
}
.case-table thead th{
  font-family:var(--mono);font-size:10px;font-weight:500;
  letter-spacing:.06em;text-transform:uppercase;color:var(--gray-3);
}
.case-table tbody th{font-weight:500;color:var(--ink)}
.case-table tbody tr:last-child th,
.case-table tbody tr:last-child td{border-bottom:0}
.case-table .num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  white-space:nowrap;text-align:right;
}
.case-table thead .num{text-align:right}
.case-caption{
  font-size:13px;line-height:1.5;color:var(--gray-3);
  margin:0 0 24px;max-width:70ch;
}

/* ------------------------------------------------------------------
   figures - inline-SVG charts. Series palette validated against the
   dataviz six checks (light, surface #fff): #006bbf + #96591f pass.
   ------------------------------------------------------------------ */
.fg{
  margin:30px 0 28px;
  background:var(--white);
  border:1px solid var(--hair);
  padding:20px 24px 18px;
}
.fg-head{
  display:flex;flex-direction:column;gap:5px;
  margin-bottom:16px;padding-bottom:13px;
  border-bottom:1px solid var(--hair);
}
.fg-title{font-size:15px;font-weight:600;letter-spacing:-.005em;color:var(--ink);line-height:1.3}
.fg-sub{font-size:13px;line-height:1.45;color:var(--gray-3)}

.fg-plot{position:relative}
.fg-scroll{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}
.fg-scroll .fg-svg{min-width:640px}
.fg-svg{width:100%;height:auto;overflow:visible}

.fg-note{
  font-size:13px;line-height:1.6;color:var(--gray-3);
  margin:16px 0 0;padding-top:14px;border-top:1px solid var(--hair);
  max-width:78ch;
}
.fg-note b{color:var(--ink);font-weight:600}
.fg-note code{
  font-family:var(--mono);font-size:.9em;
  background:var(--paper);border:1px solid var(--hair);
  padding:0 4px;border-radius:2px;color:var(--ink);
}

.fg-legend{display:flex;flex-wrap:wrap;gap:6px 20px;margin:0 0 12px}
.fg-key{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--mono);font-size:11px;color:var(--gray);
}
.fg-key i{width:10px;height:10px;border-radius:2px;flex:none}

/* svg text tokens - marks carry the series colour, never the type */
.fg-tick{font-family:var(--mono);font-size:10px;fill:var(--gray-3);font-variant-numeric:tabular-nums}
.fg-ty{text-anchor:end}
.fg-rowlab{font-family:var(--sans);font-size:12.5px;fill:var(--ink)}
.fg-val{font-family:var(--mono);font-size:12px;fill:var(--ink);font-variant-numeric:tabular-nums}
.fg-val-l{text-anchor:start}
.fg-dim{fill:var(--gray-3)}
.fg-annot{font-family:var(--sans);font-size:11px;fill:var(--gray-3)}
.fg-annot-b{font-family:var(--sans);font-size:12px;font-weight:600;fill:var(--ink)}
.fg-endlab{font-family:var(--mono);font-size:11px;fill:var(--ink);
  paint-order:stroke;stroke:var(--white);stroke-width:3px;stroke-linejoin:round}
.fg-shipn{font-family:var(--mono);font-size:10px;font-weight:500;fill:var(--ink)}
.fg-ptlab{font-family:var(--sans);font-size:11.5px;fill:var(--ink);
  paint-order:stroke;stroke:var(--white);stroke-width:3px;stroke-linejoin:round}
.fg-quad{font-family:var(--sans);font-size:11px;fill:var(--gray-3)}
.fg-inbar{font-family:var(--mono);font-size:11px;font-weight:500;fill:#fff}

.fg-grid{stroke:#ececec;stroke-width:1}
.fg-axis{stroke:var(--hair-strong);stroke-width:1}
.fg-ship{stroke:rgba(0,0,0,.2);stroke-width:1}

.fg [data-tip]{cursor:default}
.fg [data-tip]:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

.fg-details{margin-top:16px}
.fg-details summary{
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--gray-3);cursor:pointer;
  padding:6px 0;list-style:none;
}
.fg-details summary::-webkit-details-marker{display:none}
.fg-details summary::before{content:"+ ";}
.fg-details[open] summary::before{content:"\2212 ";}
.fg-details summary:hover{color:var(--ink)}
.fg-details .case-table-wrap{margin:8px 0 2px}

.fg-tip{
  position:fixed;top:0;left:0;z-index:300;
  background:var(--ink);color:#fff;
  font-family:var(--sans);font-size:12px;line-height:1.4;
  padding:7px 10px;border-radius:3px;
  max-width:280px;pointer-events:none;
  box-shadow:0 4px 14px rgba(0,0,0,.18);
}
.fg-tip[hidden]{display:none}

@media (max-width:680px){
  .fg{padding:16px 16px 14px;margin:24px 0 22px}
  .fg-scroll .fg-svg{min-width:600px}
}

.fg-swipe{display:none}
@media (max-width:760px){
  .fg-swipe{
    display:block;margin:-4px 0 10px;
    font-family:var(--mono);font-size:10px;letter-spacing:.06em;
    text-transform:uppercase;color:var(--gray-3);
  }
}

/* ------------------------------------------------------------------
   gallery - click-through image sets. Renders every slide stacked
   without JS; gallery.js adds .gal--js and turns it into a carousel.
   ------------------------------------------------------------------ */
.gal{
  margin:30px 0 28px;
  background:var(--white);
  border:1px solid var(--hair);
  padding:20px 24px 18px;
}
.gal-head{
  display:flex;flex-direction:column;gap:5px;
  margin-bottom:16px;padding-bottom:13px;
  border-bottom:1px solid var(--hair);
}
.gal-title{font-size:15px;font-weight:600;letter-spacing:-.005em;color:var(--ink);line-height:1.3}
.gal-sub{font-size:13px;line-height:1.45;color:var(--gray-3)}

.gal-stage{position:relative;max-width:760px;margin:0 auto}
.gal-track{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:center;
}
.gal-slide{margin:0}
.gal-slide img{width:auto;max-width:100%;max-height:520px;height:auto}

/* carousel mode */
.gal--js .gal-track{display:block;position:relative;min-height:520px}
.gal--js .gal-slide{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .28s var(--ease-spring);
  pointer-events:none;
}
.gal--js .gal-slide[data-on]{opacity:1;pointer-events:auto;position:relative}
@media (prefers-reduced-motion:reduce){
  .gal--js .gal-slide{transition:none}
}

.gal-btn{
  position:absolute;top:50%;transform:translateY(-50%);z-index:2;
  width:40px;height:40px;border-radius:50%;
  background:var(--white);border:1px solid var(--hair-strong);
  color:var(--ink);font-size:15px;line-height:1;
  display:none;align-items:center;justify-content:center;
  box-shadow:0 2px 10px rgba(0,0,0,.07);
  transition:border-color .18s,transform .18s var(--ease-spring);
}
.gal--js .gal-btn{display:flex}
.gal-btn:hover{border-color:var(--ink)}
.gal-btn:active{transform:translateY(-50%) scale(.94)}
.gal-prev{left:0}
.gal-next{right:0}

.gal-foot{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--hair);
}
.gal-count{
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  color:var(--gray-3);font-variant-numeric:tabular-nums;flex:none;
}
.gal-cap{font-size:13px;line-height:1.5;color:var(--gray);flex:1 1 200px}
.gal-dots{display:flex;gap:7px;flex:none}
.gal-dot{
  width:7px;height:7px;border-radius:50%;padding:0;
  background:var(--hair-strong);
  transition:background .18s,transform .18s var(--ease-spring);
}
.gal-dot[aria-selected="true"]{background:var(--ink);transform:scale(1.25)}
.gal-swipe{
  display:none;
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--gray-3);
}
.gal--js .gal-count,
.gal--js .gal-cap{display:block}
@media (max-width:760px){
  .gal--js .gal-swipe{display:block;flex:1 0 100%;order:-1;margin-bottom:-4px}
  .gal-btn{width:34px;height:34px}
  .gal--js .gal-track{min-height:360px}
  .gal-slide img{max-height:360px}
  .gal{padding:16px 16px 14px;margin:24px 0 22px}
  .gal-prev{left:-8px}
  .gal-next{right:-8px}
}

/* ---------- notebook scan ---------- */
.scan{margin:30px 0 28px;background:var(--white);border:1px solid var(--hair);padding:20px 24px 18px}
.scan img{width:100%;height:auto;border:1px solid var(--hair)}
.scan figcaption{
  font-size:13px;line-height:1.6;color:var(--gray-3);
  margin:14px 0 0;padding-top:13px;border-top:1px solid var(--hair);max-width:78ch;
}
.scan figcaption b{color:var(--ink);font-weight:600}

/* ---------- open questions pulled off the page ---------- */
.case-qa{
  list-style:none;margin:24px 0;padding:0;
  border:1px solid var(--hair);background:var(--white);
}
.case-qa > div{padding:16px 18px;border-bottom:1px solid var(--hair)}
.case-qa > div:last-child{border-bottom:0}
.case-qa dt{font-size:16px;font-weight:600;color:var(--ink);line-height:1.45;margin-bottom:7px}
.case-qa dd{margin:0;font-size:15px;line-height:1.6;color:var(--gray)}

/* ---------- draft markers (delete as the page fills in) ---------- */
.todo{
  border-left:3px solid var(--amber);background:var(--cream);
  padding:13px 16px;margin:20px 0;max-width:70ch;
}
.todo p{font-size:14px!important;line-height:1.6;color:#5c3a12!important;margin:0!important}
.todo .mono{font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--amber);display:block;margin-bottom:5px}