/* site/css/case.css — the standalone case pages (/p/<slug>, /ar/p/<slug>), the screen viewer (#gv) and the 404 page.
   Lane L2. Tokens only (site/styles.css); new tokens carry the --m-case- prefix. Layout ≥ 1100 px: reading column
   (max 760 px) + one sticky inline-end rail (facts, TOC, actions) that folds into a <details> below 1100 px.
   Cross-document view transition: the hero plate and the prev/next thumbnails share the card's cover-<slug> name
   (styles.css declares @view-transition and the reduced-motion guard). Light and dark are equals; the viewer is dark. */
:root{--m-case-rail:272px;--m-case-measure:760px;--m-case-gap:56px;--m-case-dark:#0B0F17}

/* ============ header (the shell's .nav, without the hero tint) ============ */
.case-nav .case-links{display:flex;margin-inline-end:6px;min-width:0}
.case-nav .case-links a{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:99px;text-decoration:none;font-size:13.5px;color:var(--dim);white-space:nowrap;transition:.2s}
.case-nav .case-links a:hover{color:var(--ink);background:var(--panel2)}
.case-nav .case-links i{font-style:normal;color:var(--gold-t)}
@media (max-width:560px){.case-nav .case-links a{padding:7px 9px;font-size:13px}}

/* ============ page ============ */
main.case{padding:calc(var(--nav-h) + 30px) var(--gutter) 72px}
.case-hero{margin:0 0 36px;scroll-margin-top:calc(var(--nav-h) + 8px)}
.case-plate{margin:0 0 26px;border-radius:var(--r);overflow:hidden;background:var(--m-case-dark);border:1px solid var(--hair2);box-shadow:0 34px 70px -44px rgba(0,0,0,.6);aspect-ratio:16/10}
.case-plate img{display:block;width:100%;height:100%;object-fit:cover}
.case-kick{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin:0 0 16px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--faint)}
.case-kick .case-kind{color:var(--gold-t)}
.case-kick .pill{font-family:var(--f-body);text-transform:none;letter-spacing:0}   /* JetBrains Mono ships 400/500 only: the 600 pill takes the body face, as on the home page */
.case-kick .case-kind::before{content:"·";margin-inline-end:14px;color:var(--faint)}
html[lang="ar"] .case-kick{font-family:var(--f-body);font-size:13px;letter-spacing:0;text-transform:none}
.case-hero h1{font-size:clamp(36px,5.4vw,60px);font-weight:800;line-height:1.1;letter-spacing:-.025em;margin:0;max-width:16ch;overflow-wrap:anywhere}
html[lang="ar"] .case-hero h1{font-weight:800;line-height:1.35;letter-spacing:0}
.case-one{font-size:clamp(17px,1.9vw,21px);line-height:1.6;color:var(--dim);font-weight:400;margin:16px 0 0;max-width:44ch}
@media (min-width:1100px){
  .case-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.18fr);gap:0 56px;align-items:center;margin-bottom:44px}
  .case-plate{grid-column:2;grid-row:1/5;margin:0}
  .case-kick,.case-hero h1,.case-one{grid-column:1}
}

/* the plate morphs from the card (styles.css names the card image cover-<slug>) */
[data-slug="saqr"] .case-plate img{view-transition-name:cover-saqr}
[data-slug="tatabbu"] .case-plate img{view-transition-name:cover-tatabbu}
[data-slug="beezato"] .case-plate img{view-transition-name:cover-beezato}
[data-slug="halqat"] .case-plate img{view-transition-name:cover-halqat}
[data-slug="alwaei"] .case-plate img{view-transition-name:cover-alwaei}
[data-slug="dhaleel"] .case-plate img{view-transition-name:cover-dhaleel}
[data-slug="warraq"] .case-plate img{view-transition-name:cover-warraq}
[data-slug="zwaya"] .case-plate img{view-transition-name:cover-zwaya}
[data-slug="seescript"] .case-plate img{view-transition-name:cover-seescript}
.case-next a[data-slug="saqr"] img{view-transition-name:cover-saqr}
.case-next a[data-slug="tatabbu"] img{view-transition-name:cover-tatabbu}
.case-next a[data-slug="beezato"] img{view-transition-name:cover-beezato}
.case-next a[data-slug="halqat"] img{view-transition-name:cover-halqat}
.case-next a[data-slug="alwaei"] img{view-transition-name:cover-alwaei}
.case-next a[data-slug="dhaleel"] img{view-transition-name:cover-dhaleel}
.case-next a[data-slug="warraq"] img{view-transition-name:cover-warraq}
.case-next a[data-slug="zwaya"] img{view-transition-name:cover-zwaya}
.case-next a[data-slug="seescript"] img{view-transition-name:cover-seescript}
::view-transition-old(root),::view-transition-new(root){animation-duration:.28s}

/* ============ metrics with their method ============ */
.case-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:0 var(--m-case-gap)}
.case-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(150px,100%),1fr));gap:1px;background:var(--hair2);border:1px solid var(--hair2);border-radius:var(--r);overflow:hidden;margin:0 0 36px}
/* phones: two columns, so an odd last metric takes the whole row instead of leaving an empty cell (18/10 review) */
@media (max-width:519px){.case-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.case-metrics>.cm:last-child:nth-child(odd){grid-column:1 / -1}}
.cm{background:var(--bg2);padding:20px 18px;min-width:0}
details.cm{padding:0}
.cm summary{list-style:none;cursor:pointer;padding:20px 18px;display:block;transition:background .2s}
.cm summary::-webkit-details-marker{display:none}
.cm summary:hover{background:var(--panel2)}
.cm .num{display:block;font-size:clamp(28px,3.2vw,40px);color:var(--ink);line-height:1.05;letter-spacing:-.01em;font-weight:800}
.cm-l{display:block;margin-top:6px;font-size:12.5px;line-height:1.4;color:var(--dim)}
.cm-how{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-style:normal;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--gold-t)}
.cm-how::after{content:"+";font-size:13px;line-height:1}
details.cm[open] .cm-how::after{content:"−"}
html[lang="ar"] .cm-how{font-family:var(--f-body);font-size:12px;letter-spacing:0;text-transform:none}
.cm-m{margin:0 18px 18px;padding-top:12px;border-top:1px dashed var(--hair2);font-size:13.5px;line-height:1.65;color:var(--dim)}

/* ============ the rail: facts, TOC, actions ============ */
.case-rail{min-width:0}
.rail-d{border:1px solid var(--hair2);border-radius:var(--r);background:var(--panel);margin:0 0 36px}
.rail-d summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 18px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-t)}
.rail-d summary::-webkit-details-marker{display:none}
.rail-d summary i{font-style:normal;font-size:18px;line-height:1;color:var(--faint);transition:transform .25s var(--ease)}
.rail-d[open] summary i{transform:rotate(45deg)}
html[lang="ar"] .rail-d summary{font-family:var(--f-body);font-size:13px;letter-spacing:0;text-transform:none}
.rail-in{padding:2px 18px 18px}
.case-facts{margin:0;display:grid;gap:13px}
.case-facts>div{display:grid;gap:3px;min-width:0}
.case-facts dt,.rail-t{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
html[lang="ar"] .case-facts dt,html[lang="ar"] .rail-t{font-family:var(--f-body);font-size:12px;letter-spacing:0;text-transform:none}
.case-facts dd{margin:0;font-size:14px;line-height:1.55;color:var(--ink);overflow-wrap:anywhere}
.case-facts .pill{vertical-align:middle;margin-inline-end:6px}
.case-facts .chips{margin:4px 0 0;padding:0;list-style:none}
.case-toc{margin-top:22px;padding-top:18px;border-top:1px solid var(--hair2)}
.rail-t{margin:0 0 6px}
.case-toc ol{list-style:none;margin:0;padding:0}
.case-toc a{display:flex;gap:10px;align-items:baseline;padding:6px 10px;margin-inline-start:-12px;border-inline-start:2px solid transparent;text-decoration:none;color:var(--dim);font-size:13.5px;line-height:1.4;transition:color .2s,border-color .2s}
.case-toc a:hover{color:var(--ink)}
.case-toc a[aria-current="true"]{color:var(--ink);border-color:var(--gold)}
.toc-n{font-size:10.5px;color:var(--gold-t);flex:none;letter-spacing:.08em}
.rail-act{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
@media (min-width:1100px){
  .case-grid{grid-template-columns:minmax(0,1fr) var(--m-case-rail);grid-template-rows:auto 1fr;align-items:start}
  .case-metrics{grid-column:1;grid-row:1}
  .case-body{grid-column:1;grid-row:2}
  .case-rail{grid-column:2;grid-row:1/3;position:sticky;top:calc(var(--nav-h) + 20px);max-height:calc(100vh - var(--nav-h) - 36px);overflow:auto;scrollbar-width:thin}
  .rail-d{border:0;background:none;margin:0}
  .rail-d summary{display:none}
  .rail-in{padding:2px 0 0}
}

/* ============ the reading column ============ */
.case-body{max-width:var(--m-case-measure);min-width:0}
.case-sec{margin:0 0 54px;scroll-margin-top:calc(var(--nav-h) + 16px)}
.case-sec h2{display:flex;align-items:baseline;gap:14px;font-size:clamp(22px,2.8vw,28px);font-weight:700;line-height:1.3;letter-spacing:-.01em;margin:0 0 16px}
html[lang="ar"] .case-sec h2{font-weight:700;letter-spacing:0;line-height:1.45}
.case-sec h2 i{font-style:normal;font-weight:500;font-size:12px;letter-spacing:.1em;color:var(--gold-t);flex:none}
.case-sec h2 .cnt{font-size:12px;font-weight:500;color:var(--faint);margin-inline-start:2px}
.case-sec p{font-size:16.5px;line-height:1.82;color:var(--dim);margin:0 0 16px;max-width:66ch}
.case-sec p b,.case-sec p strong{color:var(--ink);font-weight:500}
.case-sec p .mono{font-size:.9em;color:var(--ink)}
html[lang="ar"] .case-sec p{line-height:1.95}

/* inline figures: the screens that support a section */
.cfig{margin:26px 0 10px}
.cfig-grid{display:grid;gap:10px;grid-template-columns:minmax(0,1fr)}
.cfig-n2 .cfig-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.cfig-n3 .cfig-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.cfig-p.cfig-n1 .cfig-grid{max-width:300px}
.cfig-p.cfig-n2 .cfig-grid{max-width:580px}
@media (max-width:699px){.cfig-n2:not(.cfig-p) .cfig-grid{grid-template-columns:minmax(0,1fr)}}
.cshot{display:block;position:relative;width:100%;padding:0;border:1px solid var(--hair2);border-radius:var(--rs);background:var(--m-case-dark);overflow:hidden;cursor:zoom-in;font:inherit;color:inherit;transition:transform .35s var(--ease),border-color .3s}
.cshot img{display:block;width:100%;height:auto}
@media (pointer:fine){.cshot:hover{transform:translateY(-2px);border-color:var(--gold)}}
.cshot:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.cshot-n{position:absolute;inset-inline-start:8px;top:8px;font-size:10.5px;padding:2px 7px;border-radius:99px;background:rgba(11,15,23,.72);color:var(--onDark);backdrop-filter:blur(6px)}
.cfig figcaption{display:flex;flex-wrap:wrap;gap:4px 14px;align-items:baseline;margin-top:10px;font-size:13px;line-height:1.6;color:var(--faint)}
.cfig .cap{display:inline-flex;gap:8px;align-items:baseline}
.cap-n{font-style:normal;font-size:10.5px;color:var(--gold-t);flex:none}
.cfig-all{margin-inline-start:auto;font-size:12.5px;white-space:nowrap;color:var(--gold-t);text-decoration:none}
.cfig-all:hover{text-decoration:underline}
.demo-badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;padding:2px 8px;border-radius:99px;border:1px solid color-mix(in srgb,var(--copper) 55%,transparent);color:var(--copper-t);background:color-mix(in srgb,var(--copper) 10%,transparent);vertical-align:middle;white-space:nowrap}
html[lang="ar"] .demo-badge{font-family:var(--f-body);font-size:11.5px;letter-spacing:0;text-transform:none}

/* every screen */
.gal-note{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin:0 0 14px;padding-inline-start:12px;border-inline-start:2px solid var(--copper);font-size:13.5px;line-height:1.6;color:var(--faint)}
.gal-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.gal-th{padding:0;border:1px solid var(--hair2);border-radius:var(--rs);overflow:hidden;background:var(--m-case-dark);cursor:zoom-in;aspect-ratio:16/10;transition:transform .3s var(--ease),border-color .3s}
.gal-th img{display:block;width:100%;height:100%;object-fit:cover}
@media (pointer:fine){.gal-th:hover{transform:translateY(-2px);border-color:var(--gold)}}
.gal-th:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
@media (max-width:480px){.gal-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* the proof panel */
.proof-s{font-size:15px;color:var(--dim);margin:-4px 0 18px}
.proof-rows{list-style:none;margin:0;padding:0;border-top:1px solid var(--hair2)}
.proof-rows li{display:grid;grid-template-columns:112px minmax(0,1fr);gap:6px 18px;padding:14px 0;border-bottom:1px solid var(--hair2)}
.pr-k{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-t);padding-top:5px}
html[lang="ar"] .pr-k{font-family:var(--f-body);font-size:12.5px;letter-spacing:0;text-transform:none;padding-top:3px}
.pr-v{min-width:0;font-size:14.5px;line-height:1.6;color:var(--ink);overflow-wrap:anywhere}
.pr-v .num{font-size:22px;color:var(--gold-t);margin-inline-end:6px}
.pr-v small{display:block;margin-top:3px;font-size:13px;line-height:1.6;color:var(--faint)}
.pr-v a{color:var(--ink)}
.pr-cert{display:block;text-decoration:none}
.pr-cert b{font-weight:500}
.pr-cert:hover b{color:var(--gold-t);text-decoration:underline}
@media (max-width:560px){.proof-rows li{grid-template-columns:minmax(0,1fr);gap:3px}}
.plink{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border:1px solid var(--hair2);border-radius:99px;text-decoration:none;font-family:var(--f-mono);font-size:12.5px;color:var(--dim);transition:border-color .2s,color .2s;max-width:100%}
.plink:hover{border-color:var(--gold);color:var(--ink)}
.plink i{font-style:normal;color:var(--gold-t)}
.pnolink{font-size:13.5px;line-height:1.55;color:var(--faint)}
.pnolink b{display:block;font-weight:500;color:var(--dim)}

/* talk */
.case-talk{margin:56px 0 0;padding:28px 26px;border:1px solid var(--hair2);border-radius:var(--r);background:var(--panel)}
.case-talk h2{font-size:clamp(21px,2.4vw,26px);font-weight:700;margin:0 0 10px}
.case-talk p{margin:0 0 18px;font-size:15px;line-height:1.7;color:var(--dim);max-width:60ch}
.case-talk p b{display:block;margin-top:6px;font-weight:500;color:var(--ink)}
.talk-act{display:flex;gap:10px;flex-wrap:wrap}
.talk-act .btn bdi{font-family:var(--f-mono);font-weight:500;font-size:12px;opacity:.85}

/* prev / next */
.case-next{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:56px 0 0;padding-top:32px;border-top:1px solid var(--hair2)}
.case-next a{display:grid;grid-template-columns:96px minmax(0,1fr);gap:16px;align-items:center;padding:14px;border:1px solid var(--hair2);border-radius:var(--r);background:var(--panel);text-decoration:none;color:var(--ink);transition:transform .35s var(--ease),border-color .3s}
.case-next a[rel="next"]{grid-template-columns:minmax(0,1fr) 96px;text-align:end}
.case-next a[rel="next"] img{order:2}
.case-next img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:8px;background:var(--m-case-dark)}
.case-next span{display:grid;gap:2px;min-width:0}
.case-next small{font-family:var(--f-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
html[lang="ar"] .case-next small{font-family:var(--f-body);font-size:11.5px;letter-spacing:0;text-transform:none}
.case-next b{font-size:18px;font-weight:400;line-height:1.3}
.case-next em{font-style:normal;font-size:12.5px;color:var(--faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (pointer:fine){.case-next a:hover{transform:translateY(-2px);border-color:var(--gold)}}
@media (max-width:640px){
  .case-next{grid-template-columns:minmax(0,1fr)}
  .case-next a,.case-next a[rel="next"]{grid-template-columns:84px minmax(0,1fr);text-align:start}
  .case-next a[rel="next"] img{order:0}
}

/* ============ the screen viewer ============ */
.gv{position:fixed;inset:0;width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;border-radius:0;background:rgba(11,15,23,.97);color:var(--onDark);
  display:grid;grid-template-rows:auto minmax(0,1fr) auto auto;grid-template-columns:auto minmax(0,1fr) auto;grid-template-areas:"top top top" "prev stage next" "cap cap cap" "strip strip strip"}
.gv::backdrop{background:rgba(5,8,14,.9)}
body.gv-open{overflow:hidden}
.gv-top{grid-area:top;display:flex;align-items:center;gap:10px;padding:12px 16px}
.gv-sp{flex:1}
.gv-n{grid-area:top;justify-self:center;align-self:center;font-size:12.5px;color:var(--onDarkDim);pointer-events:none;letter-spacing:.06em}
.gv-badge{display:inline-flex;align-items:center;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:99px;border:1px solid rgba(255,138,80,.5);color:var(--darkGold2)}
.gv-badge[hidden]{display:none}
html[lang="ar"] .gv-badge{font-family:var(--f-body);font-size:11.5px;letter-spacing:0;text-transform:none}
.gv-btn{font:inherit;font-size:12.5px;min-height:36px;padding:6px 12px;border-radius:99px;border:1px solid rgba(234,238,245,.22);background:transparent;color:var(--onDarkDim);cursor:pointer;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;transition:color .2s,border-color .2s}
.gv-btn:hover{color:var(--onDark);border-color:var(--darkGold)}
.gv-x{width:36px;padding:0;justify-content:center;font-size:20px;line-height:1}
.gv-nav{align-self:center;margin:0 12px;width:46px;height:46px;border-radius:50%;border:1px solid rgba(234,238,245,.22);background:rgba(19,26,37,.7);color:var(--onDark);font-size:26px;line-height:1;cursor:pointer;display:grid;place-items:center;transition:border-color .2s,background .2s}
.gv-nav:hover{border-color:var(--darkGold);background:rgba(19,26,37,.95)}
.gv-nav span{display:block;transform:translateY(-2px)}
.gv-prev{grid-area:prev}
.gv-next{grid-area:next}
.gv-nav[hidden]{display:none}
.gv-fig{grid-area:stage;margin:0;min-height:0;min-width:0;display:grid;place-items:center;padding:0 4px;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.gv-fig img{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:8px;box-shadow:0 30px 80px -30px rgba(0,0,0,.85);transition:opacity .16s}
.gv-fig img.fade{opacity:0}
.gv-cap{grid-area:cap;justify-self:center;margin:0;padding:12px 16px 4px;text-align:center;max-width:min(1280px,94vw);font-size:14px;line-height:1.55;color:var(--onDarkDim)}
.gv-strip{grid-area:strip;display:flex;gap:6px;justify-content:center;padding:8px 16px 14px;overflow-x:auto;scrollbar-width:none;min-width:0}
.gv-strip::-webkit-scrollbar{display:none}
.gv-strip button{flex:none;width:48px;height:30px;padding:0;border:1px solid rgba(234,238,245,.2);border-radius:5px;overflow:hidden;background:var(--m-case-dark);cursor:pointer;opacity:.55;transition:opacity .2s,border-color .2s}
.gv-strip button:hover{opacity:.9}
.gv-strip button[aria-current="true"]{opacity:1;border-color:var(--darkGold)}
.gv-strip img{display:block;width:100%;height:100%;object-fit:cover}
.gv-toast{position:absolute;bottom:64px;left:50%;transform:translate(-50%,10px);padding:8px 16px;border-radius:99px;border:1px solid var(--darkGold);background:var(--dark2);color:var(--onDark);font-size:13px;opacity:0;pointer-events:none;transition:.25s var(--ease)}
.gv-toast.on{opacity:1;transform:translate(-50%,0)}
:focus-visible.gv-btn,:focus-visible.gv-nav,.gv-strip button:focus-visible{outline:2px solid var(--darkGold);outline-offset:3px}
@media (max-width:699px){
  .gv{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto auto;grid-template-areas:"top top top" "stage stage stage" "cap cap cap" "prev n next"}
  .gv-n{grid-area:n;justify-self:center;align-self:center;pointer-events:none;padding:0 12px}
  .gv-nav{margin:6px 16px 16px;width:52px;height:44px;border-radius:12px}
  .gv-prev{justify-self:end}
  .gv-next{justify-self:start}
  .gv-fig{padding:0 10px}
  .gv-cap{padding:10px 14px 2px;font-size:13px}
  .gv-strip{display:none}
  .gv-toast{bottom:84px}
}

/* ============ 404 ============ */
.nf{padding:calc(var(--nav-h) + 56px) var(--gutter) 88px;display:grid;gap:48px;max-width:960px}
.nf-block h1{font-size:clamp(30px,5vw,50px);font-weight:800;letter-spacing:-.02em;line-height:1.1;margin:14px 0 0}
.nf-block[lang="ar"] h1{font-weight:800;letter-spacing:0;line-height:1.3}
.nf-p{margin:14px 0 0;font-size:16px;line-height:1.7;color:var(--dim);max-width:52ch}
.nf-act{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 0}
.nf-block+.nf-block{padding-top:44px;border-top:1px solid var(--hair2)}

/* ============ print ============ */
@media print{
  main.case{padding:0}
  .case-rail,.case-next,.case-talk,.cfig-all,.gv,.case-links{display:none!important}
  .case-grid{display:block}
  .case-plate{box-shadow:none;border:0}
  .cm summary{padding:8px 0}
  details.cm .cm-m{display:block}
}