/* Case study pages. Loaded after style.css: tokens, header, menu, mask, seam and
   tags come from there; only the case layout lives here. */

/* ---------- hero ---------- */
.cs-hero{position:relative;background:var(--bone);min-height:100vh;padding:170px var(--pad) 150px;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end}
.cs-back{position:absolute;top:120px;left:var(--pad);display:inline-flex;align-items:center;gap:10px;color:rgba(20,19,16,.55);z-index:3;transition:color .3s var(--e-out)}
.cs-back:hover{color:var(--synth)}
.cs-kicker{display:flex;align-items:center;gap:14px;margin-bottom:28px;color:rgba(20,19,16,.55)}
.cs-kicker span:first-child{color:var(--synth);font-weight:700}
.cs-kicker i{width:52px;height:1px;background:rgba(20,19,16,.25);display:block}
.cs-h{position:relative;z-index:3;font-size:clamp(44px,7.4vw,118px);font-weight:800;line-height:.93;letter-spacing:-.042em;max-width:1200px;margin-left:-5px}
.cs-lead{position:relative;z-index:3;margin-top:34px;max-width:600px;font-size:21px;line-height:1.5;color:rgba(20,19,16,.72)}
.cs-facts{position:relative;z-index:3;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:32px;margin-top:64px;border-top:1px solid rgba(20,19,16,.2)}
.cs-facts div{padding-top:18px;display:flex;flex-direction:column;gap:10px}
.cs-facts dt{color:var(--ink-secondary);font-size:10px;letter-spacing:.18em}
.cs-facts dd{font-size:17px;font-weight:600;letter-spacing:-.01em;line-height:1.35}
.cs-seam{top:26%;height:34px;mix-blend-mode:multiply;z-index:1;opacity:.9}
.cs-word{position:absolute;right:-18px;top:118px;font-size:clamp(90px,15vw,220px);font-weight:800;letter-spacing:-.04em;line-height:1;color:var(--bone-2);white-space:nowrap;z-index:0;pointer-events:none}

/* ---------- content blocks ---------- */
.cs-block{position:relative;display:grid;grid-template-columns:240px minmax(0,1fr);column-gap:60px;padding:120px var(--pad);background:var(--bone);border-top:1px solid rgba(20,19,16,.14)}
.cs-block.dark{background:var(--basalt);color:var(--bone);border-top:0}
.cs-block.moss{background:var(--moss);color:var(--bone);border-top:0}
.cs-block.clay{background:var(--bone-2);border-top:0}
.cs-label{position:relative}
.cs-label span{position:sticky;top:120px;display:block;color:var(--synth)}
.cs-block.dark .cs-label span,.cs-block.moss .cs-label span{color:rgba(237,231,218,.6)}
.cs-body{display:flex;flex-direction:column;gap:26px;min-width:0}
.cs-body h2{font-size:clamp(32px,4.5vw,66px);font-weight:800;line-height:.97;letter-spacing:-.04em;max-width:980px}
.cs-body > p{font-size:20px;line-height:1.55;max-width:660px;color:rgba(20,19,16,.74)}
.dark .cs-body > p,.moss .cs-body > p{color:rgba(237,231,218,.78)}
.cs-body > p strong{font-weight:600;color:inherit}

/* term + explanation rows */
.cs-points{margin-top:18px;border-top:1px solid rgba(20,19,16,.18)}
.cs-points div{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);column-gap:40px;padding:22px 0;border-bottom:1px solid rgba(20,19,16,.18)}
.cs-points dt{font-size:clamp(19px,1.7vw,24px);font-weight:600;letter-spacing:-.02em;line-height:1.2}
.cs-points dd{font-size:18px;line-height:1.5;color:rgba(20,19,16,.72)}
.dark .cs-points,.dark .cs-points div,.moss .cs-points,.moss .cs-points div{border-color:rgba(237,231,218,.2)}
.dark .cs-points dd,.moss .cs-points dd{color:rgba(237,231,218,.75)}

/* a chain of steps read left to right */
.cs-flow{display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));column-gap:22px;margin-top:22px}
.cs-flow li{position:relative;border-top:2px solid currentColor;padding-top:20px;display:flex;flex-direction:column;gap:12px}
.cs-flow li::before{content:'';position:absolute;top:-6px;left:0;width:10px;height:10px;background:var(--synth)}
.cs-flow .mono{opacity:.55}
.cs-flow strong{font-size:clamp(17px,1.55vw,23px);font-weight:800;letter-spacing:-.02em;line-height:1.1;overflow-wrap:anywhere}
.cs-flow p{font-size:16px;line-height:1.45;opacity:.78}

/* page index (information architecture) */
.cs-index{display:grid;grid-template-columns:1fr 1fr;column-gap:40px;margin-top:10px;border-top:1px solid rgba(20,19,16,.18)}
.cs-index li{display:grid;grid-template-columns:44px minmax(0,1fr);column-gap:12px;align-items:baseline;padding:16px 0;border-bottom:1px solid rgba(20,19,16,.18)}
.cs-index .mono{color:var(--synth)}
.cs-index strong{font-size:20px;font-weight:600;letter-spacing:-.02em}
.cs-index p{grid-column:2;font-size:16px;line-height:1.45;color:rgba(20,19,16,.66);margin-top:4px}

/* tablet screens */
.cs-shots{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:20px}
.cs-shots figure{display:flex;flex-direction:column;gap:12px}
.cs-shots img{display:block;width:100%;height:auto;aspect-ratio:1668/2420;object-fit:cover;border-radius:12px;background:var(--bone-2)}
.cs-shots figcaption{color:rgba(20,19,16,.55)}
.clay .cs-shots img{box-shadow:0 1px 0 rgba(20,19,16,.08)}

/* documented figures only — nothing here is estimated */
.cs-figures{display:flex;flex-wrap:wrap;gap:22px 64px;margin-top:10px}
.cs-figures div{display:flex;flex-direction:column;gap:8px}
.cs-figures strong{font-size:clamp(40px,4.6vw,68px);font-weight:800;letter-spacing:-.04em;line-height:1}
.cs-figures span{opacity:.6;font-size:10px;letter-spacing:.18em}

/* technical layer: grouped, secondary */
.cs-tech{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:34px 40px;margin-top:14px}
.cs-tech div{border-top:1px solid rgba(237,231,218,.25);padding-top:16px;display:flex;flex-direction:column;gap:12px}
.cs-tech dt{color:rgba(237,231,218,.55);font-size:10px;letter-spacing:.18em}
.cs-tech dd{font-size:17px;line-height:1.5;color:rgba(237,231,218,.86)}
.cs-body > .cs-note{font-size:10px;line-height:1.6;letter-spacing:.14em;opacity:.55;margin-top:6px;color:inherit}

/* ---------- end: next project + contact ---------- */
.cs-end{position:relative;background:var(--basalt);color:var(--bone);padding:130px var(--pad) 40px;overflow:hidden}
.cs-next{position:relative;display:block;padding-bottom:70px;border-bottom:1px solid rgba(237,231,218,.18)}
.cs-next .mono{display:block;color:rgba(237,231,218,.5);margin-bottom:22px}
.cs-next .cs-next-h{font-size:clamp(38px,6.4vw,100px);font-weight:800;line-height:.95;letter-spacing:-.042em;transition:color .45s var(--e-out)}
.cs-next:hover .cs-next-h{color:var(--ochre)}
.cs-cta{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap;padding:70px 0 120px}
.cs-cta p{font-size:clamp(26px,2.8vw,40px);font-weight:800;letter-spacing:-.03em;line-height:1.05;max-width:620px}
.cs-cta .pill{background:var(--bone);color:var(--basalt)}
.cs-foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px 30px;color:rgba(237,231,218,.45)}
.cs-foot a:hover{color:var(--bone)}

@media (max-width:1024px){
  .cs-hero{min-height:auto;padding:180px var(--pad) 90px}
  .cs-back{top:100px}
  .cs-facts{grid-template-columns:1fr;row-gap:4px;margin-top:44px}
  .cs-word{top:auto;bottom:-2vw;right:-10px}
  .cs-block{grid-template-columns:1fr;row-gap:28px;padding:84px var(--pad)}
  .cs-label span{position:static}
  .cs-points div{grid-template-columns:1fr;row-gap:8px}
  .cs-flow{grid-template-columns:1fr;row-gap:0}
  .cs-flow li{border-top:0;border-left:2px solid currentColor;padding:0 0 26px 22px}
  .cs-flow li:last-child{padding-bottom:0}
  .cs-flow li::before{top:0;left:-6px}
  .cs-index{grid-template-columns:1fr}
  .cs-shots{grid-template-columns:1fr 1fr}
  .cs-end{padding-top:100px}
  .cs-cta{padding:56px 0 90px}
  .cs-h{font-size:clamp(30px,8.6vw,64px)}
  .cs-seam{top:132px;height:22px}
  .cs-kicker{flex-wrap:wrap;gap:6px 14px}
  .cs-kicker i{display:none}
  .cs-next .cs-next-h{font-size:clamp(26px,7.6vw,56px)}
}

/* Review: meaningful labels, in-flow seam, inspectable evidence and direct contact. */
.cs-hero .cs-seam{position:relative;top:auto;left:-6vw;right:auto;flex-shrink:0;width:112vw;height:22px;margin:20px 0 48px;transform-origin:center}
.cs-flow[style="--n:6"]{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:32px}
.cs-disclosure{border-top:1px solid currentColor;padding-top:18px}
.cs-disclosure>summary{cursor:pointer;font-size:12px;line-height:1.7;letter-spacing:.08em;padding:8px 0}
.cs-disclosure[open]>summary{margin-bottom:22px}
.cs-all{display:inline-block;margin:0 0 40px;text-decoration:underline;text-underline-offset:5px}
.cs-shots a{display:block}
.cs-shots a:focus-visible,.cs-disclosure summary:focus-visible{outline:2px solid var(--synth);outline-offset:5px}
@media(max-width:1024px){.cs-flow[style="--n:6"]{grid-template-columns:1fr;row-gap:0}}
@media(max-width:700px){.cs-shots{grid-template-columns:1fr}.cs-shots figure{max-width:440px}.cs-hero .cs-seam{margin:0 0 32px;height:14px}.cs-cta{padding-bottom:40px}}