/* Case studies · DIRECTION A — THE CALL.
   The index is a Per My Last Prompt share screen: the current study is shared on the stage as a film
   sheet (Besley headline, mono numbers, steel figures); the four studies sit below as webcam tiles with
   name pills, the one sharing outlined in steel; a dock of round call buttons. The bar is home-v2's.
   Gold = "Discuss a project" only. Same tokens as home-v2/home-20261001.css. */
@font-face{font-family:"A Public Sans";src:url("/screen/assets/public-sans-vf.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"A Barlow";src:url("/screen/assets/barlow-semi-condensed-500.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"A Droid";src:url("/screen/assets/droid-sans-mono-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"A Droid";src:url("/screen/assets/cousine-700.woff2") format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"A Besley";src:url("/case-studies/fonts/besley-800.woff2") format("woff2");font-weight:800;font-display:swap}
@font-face{font-family:"A Besley";src:url("/case-studies/fonts/besley-500-italic.woff2") format("woff2");font-weight:500;font-style:italic;font-display:swap}

:root{
  color-scheme:dark;
  /* the call (obsidian) */
  --call:#0b1219;--ground:#0e1a25;--tile:#111b26;--well:#0a131b;
  --film:#f1f5f8;--plate:#dee4e9;--muted:#a6aeb5;
  --rule:rgba(241,245,248,.14);--hair:rgba(241,245,248,.24);--edge:rgba(241,245,248,.12);
  --pill:rgba(7,12,18,.78);--pill-edge:rgba(241,245,248,.1);
  --steel:#6fa3d6;--steel-glow:rgba(111,163,214,.28);
  --gold:#f59e0b;--gold-hi:#ffb02e;--on-gold:#0e1a25;
  /* the sheet (film) */
  --ink:#0e1a25;--ink-2:#52565b;--ink-3:#868a8e;--sheet:#f1f5f8;--sheet-plate:#dee4e9;
  --sheet-rule:rgba(14,26,37,.19);--sheet-hair:rgba(14,26,37,.28);
  --accent:#346794;--accent-hi:#357fbd;
  /* hands */
  --sans:"A Public Sans","Public Sans",Arial,sans-serif;
  --label:"A Barlow","Barlow Semi Condensed",Arial,sans-serif;
  --mark:"A Droid","Droid Sans Mono",monospace;
  --serif:"A Besley",Besley,Georgia,serif;
  --gutter:clamp(16px,4.5vw,64px);
  --r:12px;--r-sm:8px;
  --ease:cubic-bezier(.25,1,.5,1);
}
*{box-sizing:border-box}
html{background:var(--call);scroll-padding-top:84px}
body{margin:0;min-height:100svh;background:var(--call);color:var(--plate);font:400 16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
body::before{content:"";position:fixed;z-index:-1;inset:0;background:url("/screen/assets/obsidian-material.png") 43% 55% / max(300vw,400vh) auto no-repeat;opacity:.16;pointer-events:none}
h1,h2,h3,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
img{max-width:100%}
:focus-visible{outline:2px solid var(--film);outline-offset:4px;border-radius:4px}
.sheet :focus-visible{outline-color:var(--ink)}
::selection{background:rgba(241,245,248,.22);color:var(--film)}
.sheet ::selection{background:rgba(14,26,37,.16);color:var(--ink)}
#main:focus{outline:none}
[hidden]{display:none!important}
.wrap{width:min(1320px,calc(100% - var(--gutter)*2));margin-inline:auto}
.skip{position:fixed;top:12px;left:12px;z-index:50;padding:10px 16px;background:var(--film);color:var(--ground);border-radius:6px;clip-path:inset(50%)}
.skip:focus{clip-path:none}
.eyebrow{color:var(--muted);font:500 11px/1.4 var(--label);letter-spacing:.18em;text-transform:uppercase}

/* ── the bar (home-v2's) ── */
.bar{position:sticky;top:0;z-index:20;background:color-mix(in oklab,var(--call) 82%,transparent);backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);border-bottom:1px solid var(--rule)}
.bar-in{display:flex;align-items:center;gap:32px;min-height:64px}
.lockup{display:inline-flex;align-items:center;gap:9px;min-height:44px;flex-shrink:0}
.lockup img{display:block}
.wordmark{color:var(--film);font:400 19px/1 var(--mark);letter-spacing:.06em}
.wordmark b{font-weight:700}
.nav{display:flex;gap:28px;margin-left:auto;font-size:14px;font-weight:500}
.nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--muted);transition:color .16s var(--ease)}
.nav a:hover,.nav a[aria-current=page]{color:var(--film)}
.btn-gold{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:40px;padding:0 18px;border:0;border-radius:999px;background:var(--gold);color:var(--on-gold);font-size:14px;font-weight:600;white-space:nowrap;cursor:pointer;transition:background .2s var(--ease),box-shadow .3s var(--ease)}
.btn-gold:hover{background:var(--gold-hi);box-shadow:0 0 28px -4px rgba(245,158,11,.55)}
.btn-gold span{font-size:12px}

/* ── the call's head: tiny eyebrow over the title, the count at the right ── */
.call-head{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:12px 40px;padding-top:clamp(14px,2vw,22px)}
.call-head h1{margin-top:6px;color:var(--film);font-size:clamp(24px,2.5vw,32px);font-weight:450;letter-spacing:-.03em;line-height:1.1}
.call-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;text-align:right}
.call-count{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font:400 12px/1 var(--mark);letter-spacing:.06em}
.call-count svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round}
.call-count b{font-weight:400;color:var(--steel)}
.lede{max-width:58ch;color:var(--plate);font-size:14px;line-height:1.5;text-wrap:pretty}
.call-sum{max-width:52ch;color:var(--plate);font-size:15px;line-height:1.5;text-wrap:pretty}
.call-credit{max-width:46ch;color:var(--muted);font-size:12.5px;line-height:1.6}

/* ── the stage: what is being shared ── */
.stage{display:grid;gap:16px;margin-top:14px}
.sheet{position:relative;background:var(--sheet);color:var(--ink);border-radius:var(--r);padding:16px 28px 22px;box-shadow:0 0 0 1px rgba(241,245,248,.08),0 30px 80px -30px rgba(0,0,0,.9);background-image:linear-gradient(112deg,rgba(255,255,255,.5),rgba(255,255,255,0) 34%,rgba(255,255,255,0) 66%,rgba(255,255,255,.3))}
.marg{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding-bottom:10px;color:var(--ink-3);font:500 10.5px/1.4 var(--label);letter-spacing:.16em;text-transform:uppercase;background:repeating-linear-gradient(90deg,var(--sheet-rule) 0 6px,transparent 6px 12px) left bottom / 100% 1px no-repeat}
.marg .n{font:400 11px/1 var(--mark);letter-spacing:.08em;color:var(--accent)}
.marg .n b{font-weight:400;color:var(--ink-3)}
.sheet-body{--fig-w:min(58%,calc((100svh - 560px) * 1.7778));display:grid;grid-template-columns:minmax(0,1fr) var(--fig-w);gap:0 44px;padding-top:20px}
.sheet-copy{display:flex;flex-direction:column;min-width:0;padding-right:44px;background:repeating-linear-gradient(180deg,var(--sheet-rule) 0 6px,transparent 6px 12px) right top / 1px 100% no-repeat}
.num{color:var(--accent-hi);font:400 clamp(34px,3.4vw,48px)/1 var(--mark);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.sheet h2,.sheet .h{margin-top:14px;color:var(--ink);font:800 clamp(28px,2.9vw,42px)/1.05 var(--serif);letter-spacing:-.012em;text-wrap:balance}
.sum{max-width:44ch;margin-top:16px;color:var(--ink-2);font-size:clamp(15px,1.15vw,17px);line-height:1.6;text-wrap:pretty}
.meta{margin-top:auto;padding-top:14px;color:var(--ink-3);font:500 11px/1.5 var(--label);letter-spacing:.14em;text-transform:uppercase}
.acts{display:flex;flex-wrap:wrap;align-items:center;gap:8px 28px;margin-top:10px}
.go{display:inline-flex;align-items:center;gap:8px;min-height:40px;color:var(--ink);font-size:15px;font-weight:500;text-decoration:underline;text-decoration-color:var(--accent-hi);text-decoration-thickness:1px;text-underline-offset:.3em}
.go:hover{text-decoration-thickness:2px}
.go span{color:var(--accent);font-size:12px}
.sheet-fig{min-width:0}
.sheet-fig a{display:block;overflow:hidden;border:1px solid var(--sheet-hair);border-radius:4px;outline:1px solid var(--sheet-rule);outline-offset:4px;background:#fff;cursor:zoom-in}
.sheet-fig img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain}
.sheet-fig figcaption,.cap{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin-top:12px;color:var(--ink-2);font:500 13px/1.45 var(--serif);font-style:italic}
.cap b,.sheet-fig figcaption b{color:var(--ink-3);font:500 10.5px/1.4 var(--label);letter-spacing:.14em;text-transform:uppercase;font-style:normal}

/* Read more: a ruled row on the sheet with a drawn plus; the body reads in two columns */
.more{margin-top:18px;scroll-margin-top:84px}
.more>summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:46px;border-top:1px dashed var(--sheet-rule);border-bottom:1px dashed var(--sheet-rule);color:var(--accent);font:500 11px/1 var(--label);letter-spacing:.16em;text-transform:uppercase;list-style:none;cursor:pointer}
.more>summary::-webkit-details-marker{display:none}
.more>summary::after{content:"";flex:0 0 auto;width:12px;height:12px;background:linear-gradient(currentColor,currentColor) center / 12px 1.5px no-repeat,linear-gradient(currentColor,currentColor) center / 1.5px 12px no-repeat;transition:background-size .26s var(--ease)}
.more[open]>summary::after{background-size:12px 1.5px,1.5px 0}
.more>summary:hover{color:var(--ink)}
.more-body{padding-top:8px}
.more-body.prose{columns:2;column-gap:56px}
.more-body h3{margin:28px 0 8px;color:var(--ink);font:800 18px/1.3 var(--serif);break-after:avoid;scroll-margin-top:84px}
.more-body>h3:first-child{margin-top:20px}
.prose p{max-width:62ch;margin:0 0 1em;color:var(--ink-2);font-size:15.5px;line-height:1.7;text-wrap:pretty;overflow-wrap:break-word}
.more-body.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:0 56px}
.points{max-width:60ch}
.points li{position:relative;padding:9px 0 9px 22px;border-top:1px dashed var(--sheet-rule);color:var(--ink-2);font-size:15.5px;line-height:1.6}
.points li:first-child{border-top:0}
.points li::before{content:"";position:absolute;left:2px;top:calc(9px + .8em);width:10px;height:1px;background:var(--accent-hi)}
.views{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:18px 14px;margin-top:20px}
.views a{display:block}
.views img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;object-position:top left;border:1px solid var(--sheet-hair);border-radius:3px;background:#fff;cursor:zoom-in}
.views span{display:block;margin-top:8px;color:var(--ink-2);font-size:12.5px;line-height:1.4}
.views a:hover span{color:var(--ink)}

/* the crash page's stage: the shared screen itself */
.screen{width:min(100%,calc((100svh - 540px) * 1.7778));margin-inline:auto;border-radius:var(--r);overflow:hidden;background:var(--tile);box-shadow:0 0 0 1px var(--edge),0 30px 80px -30px rgba(0,0,0,.9)}
.screen>a{display:block;line-height:0;cursor:zoom-in}
.screen img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;object-position:top left}
.screen figcaption{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 20px;padding:12px 18px 14px;border-top:1px solid var(--rule);font-size:13px;line-height:1.5;color:var(--muted)}
.screen figcaption span{color:var(--film);font-weight:500}

/* ── the strip: who is on the call ── */
.strip{display:flex;justify-content:center;gap:12px;margin-top:12px;padding-bottom:4px;scrollbar-width:none}
.strip::-webkit-scrollbar{display:none}
.tile{position:relative;flex:0 0 auto;width:clamp(140px,13vw,188px);aspect-ratio:16/9;border-radius:var(--r-sm);overflow:hidden;background:var(--tile);box-shadow:0 0 0 1px var(--edge);transition:box-shadow .3s var(--ease);scroll-snap-align:center}
.tile img{display:block;width:100%;height:100%;object-fit:cover;object-position:top center;pointer-events:none;-webkit-user-drag:none}
.tile::after{content:"";position:absolute;inset:0;border-radius:inherit;background:var(--call);opacity:.42;transition:opacity .3s var(--ease);pointer-events:none}
.tile:hover::after{opacity:.2}
.tile[aria-current=true]{box-shadow:0 0 0 2px var(--steel),0 0 28px -4px var(--steel-glow)}
.tile[aria-current=true]::after{opacity:0}
.tag{position:absolute;left:8px;bottom:8px;z-index:2;display:inline-flex;align-items:center;gap:7px;max-width:calc(100% - 16px);padding:5px 10px 5px 8px;border:1px solid var(--pill-edge);border-radius:7px;background:var(--pill);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:var(--film);font-size:12px;font-weight:500;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tag svg{flex:0 0 13px;width:13px;height:13px;fill:none;stroke:var(--muted);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.tag-n{color:var(--muted);font:400 11px/1 var(--mark);letter-spacing:.06em}
.tile[aria-current=true] .tag svg{stroke:var(--steel)}
.tile[aria-current=true] .tag-n{color:var(--steel)}

/* ── the dock ── */
.dock{display:none;align-items:center;justify-content:center;gap:12px;margin-top:10px}
.is-live .dock{display:flex}
.round{display:grid;place-items:center;width:48px;height:48px;padding:0;border:1px solid var(--pill-edge);border-radius:50%;background:var(--tile);cursor:pointer;transition:background .18s var(--ease),border-color .18s var(--ease)}
.round:hover{background:#18232f;border-color:var(--hair)}
.round svg{width:16px;height:16px;fill:none;stroke:var(--film);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.now{display:inline-flex;align-items:center;gap:10px;min-width:132px;height:48px;justify-content:center;padding:0 20px;border:1px solid var(--pill-edge);border-radius:999px;background:var(--tile);color:var(--muted);font:400 13px/1 var(--mark);letter-spacing:.06em}
.now-n{color:var(--film)}
.bars{display:inline-flex;align-items:flex-end;gap:2px;height:12px}
.bars i{display:block;width:2px;height:100%;border-radius:1px;background:var(--steel);transform-origin:bottom;animation:bar 1.1s var(--ease) infinite alternate}
.bars i:nth-child(2){animation-delay:-.35s}
.bars i:nth-child(3){animation-delay:-.7s}
@keyframes bar{0%{transform:scaleY(.3)}100%{transform:scaleY(1)}}

/* live: one study on the stage, the swap, the tiles joining the call */
.is-live .stage>[data-study]:not(.is-on){display:none}
.is-live .stage>[data-study].is-on{animation:share .4s var(--ease) both}
@keyframes share{from{opacity:0;transform:translateY(6px)}}
.is-live .tile{animation:join .6s var(--ease) both;animation-delay:calc(.08s * var(--i,0) + .1s)}
@keyframes join{from{opacity:0;transform:translateY(10px) scale(.97)}}

/* ── the build (crash page): a sheet of four numbered functions, the dashed egg-crate ── */
.build{margin-top:clamp(40px,5vw,64px)}
.build .h{max-width:14ch;margin-top:10px}
.fns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:24px}
.fn{display:grid;grid-template-columns:52px minmax(0,1fr);column-gap:12px;padding:22px 36px 24px 0;border-top:1px dashed var(--sheet-rule)}
.fn:nth-child(2n){padding-left:36px;padding-right:0;background:repeating-linear-gradient(180deg,var(--sheet-rule) 0 6px,transparent 6px 12px) left top / 1px 100% no-repeat}
.fn-n{grid-row:1 / span 2;padding-top:4px;color:var(--accent-hi);font:400 24px/1 var(--mark);letter-spacing:-.02em}
.fn h3{color:var(--ink);font:800 19px/1.3 var(--serif)}
.fn p{max-width:46ch;margin-top:6px;color:var(--ink-2);font-size:15px;line-height:1.65;text-wrap:pretty}

/* ── the one action ── */
.contact{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px 48px;margin-top:clamp(48px,6vw,80px);padding-block:clamp(48px,6vw,80px);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.contact p{max-width:22ch;color:var(--film);font-size:clamp(26px,3vw,40px);font-weight:450;letter-spacing:-.04em;line-height:1.2;text-wrap:balance}
.contact a{display:inline-flex;align-items:center;justify-content:space-between;gap:48px;min-width:220px;min-height:52px;border-bottom:1px solid var(--gold);color:var(--film);font-size:16px;font-weight:500;flex-shrink:0}
.contact a span{color:var(--gold)}
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 32px;padding-block:28px 40px;color:var(--muted);font-size:13px}
.foot a{display:inline-flex;gap:10px;align-items:center;min-height:44px}
.foot a:hover{color:var(--film)}

/* ── the lightbox ── */
html.lb-open{overflow:hidden}
.lb{position:fixed;inset:0;width:100vw;max-width:none;height:100dvh;max-height:none;margin:0;padding:clamp(16px,3vw,40px);border:0;background:transparent;color:var(--plate);display:none;flex-direction:column;gap:16px}
.lb[open]{display:flex;animation:lb-in .24s var(--ease) both}
.lb::backdrop{background:rgba(5,10,15,.9);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
@keyframes lb-in{from{opacity:0}}
.lb-stage{flex:1;min-height:0;display:grid;place-items:center;cursor:zoom-out}
.lb-img{display:block;max-width:100%;max-height:100%;object-fit:contain;border:1px solid var(--edge);border-radius:8px;background:var(--well);box-shadow:0 40px 120px -40px rgba(0,0,0,.9);cursor:default}
.lb-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;width:min(1320px,100%);margin-inline:auto}
.lb-cap{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 14px;min-width:0}
.lb-title{color:var(--film);font-size:15px;font-weight:500}
.lb-sub{color:var(--muted);font-size:13px}
.lb-ctrl{display:flex;align-items:center;gap:8px;flex-shrink:0}
.lb-count{margin-right:6px;color:var(--muted);font:400 13px/1 var(--mark);letter-spacing:.06em}
.lb:focus{outline:none}

/* ── narrow ── */
@media (max-width:900px){
  .call-head{grid-template-columns:minmax(0,1fr)}
  .call-side{align-items:flex-start;text-align:left}
  .sheet-body{--fig-w:auto;grid-template-columns:minmax(0,1fr);gap:20px 0}
  .sheet-copy{padding-right:0;background:none}
  .sheet-fig{order:-1}
  .meta{margin-top:16px}
  .more-body.prose{columns:1}
  .more-body.split{grid-template-columns:minmax(0,1fr)}
  .screen{width:100%}
  .fns{grid-template-columns:minmax(0,1fr)}
  .fn,.fn:nth-child(2n){padding-inline:0;background:none}
  .strip{justify-content:flex-start;overflow-x:auto;scroll-snap-type:x proximity;width:100%;margin-inline:0;padding-inline:var(--gutter)}
  .tile{width:156px}
}
@media (max-width:640px){
  .bar-in{gap:12px;min-height:60px}
  .nav{display:none}
  .lockup{margin-right:auto}
  .wordmark{font-size:16px}
  .lockup img{width:26px;height:26px}
  .btn-gold{min-height:38px;padding:0 14px;font-size:13px}
  .sheet{padding:14px 18px 18px}
  .sheet h2,.sheet .h{font-size:28px}
  .views{grid-template-columns:repeat(2,minmax(0,1fr))}
  .contact{display:block}
  .contact a{margin-top:24px}
  .lb{padding:12px}
  .lb-bar{flex-direction:column;align-items:stretch}
  .lb-ctrl{justify-content:flex-end}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}