/* ============================================================
   سرد — case-study pages (shared)
   Same light-editorial identity as index.html; the page-level
   styles index carries inline are reproduced here + case blocks.
   ============================================================ */
:root{
  --paper:#F3F0E9; --panel:#ECE7DD; --panel-2:#E4DED2;
  --ink:#1A1815; --ink-soft:#57534C; --ink-faint:#928D83;
  --accent:#B4552D; --accent-soft:#C97A54;
  --line:rgba(26,24,21,.16); --line-soft:rgba(26,24,21,.08);
  --maxw:1240px; --ease:cubic-bezier(.22,.61,.36,1);
  --font-display:"Fraunces","Reem Kufi",Georgia,serif;
  --font-body:"Rubik",system-ui,sans-serif;
  --font-label:"Space Grotesk",sans-serif;
  --fill:#F3F0E9; --ambient:#F3F0E9;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%} html{scroll-behavior:auto;-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--font-body);font-weight:300;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--accent);color:#fff}
h1,h2,h3{font-family:var(--font-display);font-weight:500;line-height:1.04;letter-spacing:-.015em}
a{color:inherit}
#glow,#vignette,#grain{display:none!important}
#ambient{position:fixed;inset:0;z-index:-3;background:var(--ambient)}
#progress{position:fixed;top:0;right:0;left:0;height:2px;z-index:70;transform-origin:right;transform:scaleX(0);background:var(--accent)}

.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,56px)}
.label{font-family:var(--font-label);text-transform:uppercase;letter-spacing:.24em;font-size:12px;color:var(--accent);font-weight:500}
.idxnum{font-family:var(--font-display);font-size:14px;color:var(--ink-faint)}
.lead{color:var(--ink-soft);font-size:clamp(16px,1.7vw,20px);font-weight:300;max-width:52ch}
.reveal{opacity:0;transform:translateY(30px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* header (identical to index) */
header#header{position:fixed;top:0;right:0;left:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(20px,5vw,56px);background:rgba(243,240,233,.82);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .4s,padding .4s,transform .5s var(--ease)}
header#header.solid{border-bottom-color:var(--line)}
header#header.hidden{transform:translateY(-100%)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand .wm{font-family:var(--font-display);font-weight:600;font-size:26px;color:var(--ink);letter-spacing:0}
.brand .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}
header#header nav{display:flex;align-items:center;gap:clamp(18px,2.5vw,34px)}
header#header nav a{font-family:var(--font-label);text-decoration:none;font-size:14px;color:var(--ink-soft);font-weight:400;transition:color .3s}
header#header nav a:hover{color:var(--ink)}
header#header nav a[aria-current="page"]{color:var(--ink)}
.nav-cta{color:var(--accent)!important;position:relative}
.nav-cta::after{content:"";position:absolute;inset-inline:0;bottom:-4px;height:1px;background:var(--accent);transform:scaleX(1);transform-origin:right}
.lang-toggle{font-family:var(--font-label);font-size:13px;border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:2px;padding:6px 12px;cursor:pointer;transition:.3s}
.lang-toggle:hover{background:var(--ink);color:var(--paper)}

.btn-ink{background:var(--ink);color:var(--paper);font-family:var(--font-label);font-size:15px;padding:14px 30px;border-radius:2px;text-decoration:none;transition:.3s var(--ease);display:inline-block}
.btn-ink:hover{background:var(--accent)}
.textlink{font-family:var(--font-label);font-size:14px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);padding-bottom:3px;transition:border-color .3s}
.textlink:hover{border-bottom-color:var(--ink)}

.sec{padding:clamp(56px,10vh,110px) 0;border-top:1px solid var(--line-soft)}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:clamp(30px,5vh,54px)}
.sec-head h2{font-size:clamp(28px,4.5vw,52px)}

footer{border-top:1px solid var(--line);padding:40px 0}
footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
footer .wm{font-family:var(--font-display);font-size:22px;color:var(--ink)}
footer nav{display:flex;gap:22px} footer nav a{font-family:var(--font-label);font-size:13px;color:var(--ink-soft);text-decoration:none}
footer .cr{font-family:var(--font-label);font-size:12px;color:var(--ink-faint)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

/* ---------- case hero ---------- */
.case-hero{padding:clamp(120px,16vh,180px) 0 clamp(30px,5vh,48px)}
.case-hero .eyebrow{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.case-hero .eyebrow .rule{height:1px;width:54px;background:var(--ink);opacity:.5}
.case-hero h1{font-size:clamp(44px,8vw,104px);letter-spacing:-.03em}
.case-hero h1 em{font-style:italic;color:var(--accent);font-weight:400}
.case-hero .lead{margin:24px 0 28px}
.case-meta{display:flex;flex-wrap:wrap;gap:clamp(20px,4vw,54px);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin-top:8px}
.case-meta .m .k{font-family:var(--font-label);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint)}
.case-meta .m .v{font-size:16px;color:var(--ink);margin-top:2px}
.case-meta .m .v a{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--line)}

/* ---------- cover & figures ---------- */
.case-cover{padding:clamp(30px,5vh,50px) 0 0}
.case-cover figure,.case-fig figure{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:3px;background:var(--panel)}
.case-cover img,.case-fig img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;object-position:top center}
.case-fig img.tall{aspect-ratio:16/10}
figcaption{position:absolute;inset-block-end:0;inset-inline-start:0;background:var(--paper);color:var(--ink-faint);font-family:var(--font-label);font-size:11px;letter-spacing:.14em;text-transform:uppercase;padding:8px 14px;border-top:1px solid var(--line);border-inline-end:1px solid var(--line)}

/* ---------- two-column narrative ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px)}
@media(max-width:760px){.duo{grid-template-columns:1fr}}
.duo h3{font-size:clamp(22px,3vw,30px);margin-bottom:12px}
.duo p{color:var(--ink-soft);max-width:56ch}

/* ---------- identity block ---------- */
.identity{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,64px);align-items:start}
@media(max-width:820px){.identity{grid-template-columns:1fr}}
.swatches{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.sw{border:1px solid var(--line);border-radius:3px;overflow:hidden;background:#fff}
.sw .c{aspect-ratio:1/1.1}
.sw .h{font-family:var(--font-label);font-size:10.5px;letter-spacing:.08em;color:var(--ink-soft);padding:7px 9px;border-top:1px solid var(--line-soft);direction:ltr;text-align:left}
.ing{list-style:none;margin-top:6px}
.ing li{padding:14px 0;border-top:1px solid var(--line);color:var(--ink-soft)}
.ing li:last-child{border-bottom:1px solid var(--line)}
.ing li b{color:var(--ink);font-weight:500}
.typo{margin-top:26px;border:1px solid var(--line);border-radius:3px;padding:20px 22px;background:var(--panel)}
.typo .big{font-size:clamp(28px,4vw,44px);line-height:1.25}
.typo .small{font-family:var(--font-label);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);margin-top:6px}

/* ---------- result stats ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:clamp(20px,4vw,48px)}
.stat{border-top:2px solid var(--ink);padding-top:16px}
.stat .n{font-family:var(--font-display);font-size:clamp(40px,5.5vw,72px);line-height:1;color:var(--ink);font-variant-numeric:tabular-nums}
.stat .l{color:var(--ink-soft);font-size:14px;margin-top:8px}

/* ---------- CTA band ---------- */
.case-cta{background:var(--ink);color:var(--paper);border-radius:3px;padding:clamp(36px,6vw,64px);display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.case-cta h2{font-size:clamp(26px,4vw,44px);color:var(--paper)}
.case-cta p{color:rgba(243,240,233,.72);max-width:46ch}
.case-cta .btns{display:flex;gap:16px;flex-wrap:wrap}
.btn-paper{background:var(--paper);color:var(--ink);font-family:var(--font-label);font-size:15px;padding:14px 30px;border-radius:2px;text-decoration:none;transition:.3s}
.btn-paper:hover{background:var(--accent);color:#fff}
.btn-ghost{border:1px solid rgba(243,240,233,.4);color:var(--paper);font-family:var(--font-label);font-size:15px;padding:13px 30px;border-radius:2px;text-decoration:none;transition:.3s}
.btn-ghost:hover{border-color:var(--paper)}

/* ---------- prev / next ---------- */
.case-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:clamp(36px,7vh,64px) 0}
.case-nav a{display:block;text-decoration:none;border:1px solid var(--line);border-radius:3px;padding:22px 24px;transition:border-color .4s,transform .4s var(--ease)}
.case-nav a:hover{border-color:var(--ink);transform:translateY(-3px)}
.case-nav .k{font-family:var(--font-label);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint)}
.case-nav .v{font-family:var(--font-display);font-size:24px;color:var(--ink);margin-top:4px}
.case-nav .next{text-align:left}
html[dir="ltr"] .case-nav .next{text-align:right}
@media(max-width:640px){.case-nav{grid-template-columns:1fr}}

/* ---------- MOBILE NAV drawer (same as index) ---------- */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:0 10px;border:1px solid var(--line);border-radius:3px;background:transparent;cursor:pointer}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--ink);transition:transform .3s var(--ease),opacity .2s}
header#header.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
header#header.nav-open .nav-toggle span:nth-child(2){opacity:0}
header#header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-backdrop{position:fixed;inset:0;z-index:45;background:rgba(26,24,21,.32);opacity:0;visibility:hidden;transition:opacity .4s var(--ease),visibility 0s .4s}
body.nav-open .nav-backdrop{opacity:1;visibility:visible;transition:opacity .4s var(--ease)}
@media(max-width:780px){
  .nav-toggle{display:flex}
  header#header nav{position:fixed;inset:0 0 0 auto;width:min(82vw,340px);height:100dvh;z-index:60;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;overflow-y:auto;
    background:var(--paper);border-inline-start:1px solid var(--line);padding:96px 28px calc(28px + env(safe-area-inset-bottom));transform:translateX(100%);transition:transform .45s var(--ease)}
  html[dir="ltr"] header#header nav{inset:0 auto 0 0;transform:translateX(-100%);border-inline-start:none;border-inline-end:1px solid var(--line)}
  header#header.nav-open nav{transform:translateX(0)}
  #header nav a{display:block;font-family:var(--font-display);font-size:26px;color:var(--ink);padding:16px 2px;border-bottom:1px solid var(--line-soft)}
  #header nav .nav-cta::after{display:none}
  #header nav .lang-toggle{margin-top:20px;align-self:flex-start}
  body.nav-open{overflow:hidden}
}

/* ===== ARABIC TYPOGRAPHY — clear, connected, generously sized (El Messiri + Tajawal) ===== */
html[lang="ar"]{
  --font-display:"El Messiri","Reem Kufi",serif;
  --font-body:"Tajawal",system-ui,sans-serif;
  --font-label:"Tajawal",sans-serif;
}
html[lang="ar"] body{font-weight:400;line-height:1.9}
html[lang="ar"] h1,html[lang="ar"] h2,html[lang="ar"] h3{letter-spacing:0;line-height:1.3}
html[lang="ar"] .label,html[lang="ar"] .case-meta .m .k,html[lang="ar"] figcaption,
html[lang="ar"] .case-nav .k,html[lang="ar"] .typo .small,html[lang="ar"] header#header nav a,
html[lang="ar"] footer nav a,html[lang="ar"] footer .cr,html[lang="ar"] .btn-ink,
html[lang="ar"] .btn-paper,html[lang="ar"] .btn-ghost,html[lang="ar"] .textlink{letter-spacing:0}
html[lang="ar"] .label{font-weight:700;font-size:13.5px}
html[lang="ar"] header#header nav a{font-size:15.5px;font-weight:500}
html[lang="ar"] em,html[lang="ar"] .quote p{font-style:normal}

/* ===== MOBILE LEGIBILITY ===== */
@media(max-width:760px){
  body{font-size:17px}
  .label{font-size:13.5px}
  .lead{font-size:17.5px}
  .case-meta .m .k{font-size:12.5px}
  .case-meta .m .v{font-size:16px}
  figcaption{font-size:12px}
  .case-nav .k{font-size:12.5px}
  .case-nav .v{font-size:22px}
  .stat .l{font-size:15.5px}
  .btn-ink,.btn-paper,.btn-ghost{font-size:16px}
  .textlink{font-size:15px}
  footer nav a{font-size:14.5px}
  footer .cr{font-size:13px}
}