/* Tanestra - the clinical window.
   One stylesheet serves both locales: all directional rules use logical properties,
   so dir="rtl" mirrors the layout without a second file. */

:root{
  --ink:#0A131B; --ink-2:#0E1A24; --ink-3:#132330;
  --paper:#F4F6F7; --paper-2:#FFFFFF;
  --steel:#5E6E7B; --steel-2:#8C9AA5;
  --blue:#1E6FA8; --blue-2:#3C9BD6;
  --line-d:rgba(255,255,255,.13); --line-l:rgba(10,19,27,.14);
  --fs-display:clamp(2.6rem,6.2vw,5.4rem);
  --fs-h2:clamp(1.9rem,3.6vw,3rem);
  --fs-h3:clamp(1.12rem,1.5vw,1.35rem);
  --fs-lead:clamp(1.02rem,1.5vw,1.3rem);
  --gut:clamp(1rem,4vw,2.5rem);
  --max:78rem;
  --sans:"Inter Tight","Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}
html[lang="ar"]{
  --sans:"IBM Plex Sans Arabic","Segoe UI",Tahoma,sans-serif;
  --fs-display:clamp(2.2rem,5.4vw,4.6rem);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:1rem;line-height:1.65;
  font-feature-settings:"ss01","cv05";
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:470;letter-spacing:-.025em;line-height:1.06}
html[lang="ar"] h1,html[lang="ar"] h2,html[lang="ar"] h3{letter-spacing:0;line-height:1.3;font-weight:600}
p{margin:0}
:focus-visible{outline:2px solid var(--blue-2);outline-offset:3px;border-radius:2px}
::selection{background:var(--blue);color:#fff}

/* ---------- primitives ---------- */
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:var(--gut)}
.eyebrow{
  font-family:var(--mono);font-size:.69rem;letter-spacing:.17em;text-transform:uppercase;
  color:var(--steel);display:flex;align-items:center;gap:.7rem;
}
html[lang="ar"] .eyebrow{font-family:var(--sans);letter-spacing:.04em;font-size:.78rem;font-weight:600}
.eyebrow::before{
  content:"";inline-size:1.6rem;block-size:1px;background:currentColor;opacity:.5;flex:none;
}
.lead{font-size:var(--fs-lead);color:var(--steel);max-width:46ch;line-height:1.55}
html[lang="ar"] .lead{line-height:1.85}
.measure{max-width:62ch}
.rule{block-size:1px;background:var(--line-l);border:0;margin:0}
.on-dark .rule,.dark .rule{background:var(--line-d)}

/* aperture: the brand mark as a layout device - a frame with one corner opened */
.aperture{position:relative}
.aperture::before,.aperture::after{
  content:"";position:absolute;inline-size:14px;block-size:14px;pointer-events:none;
  border:1px solid var(--blue-2);
}
.aperture::before{inset-block-start:-1px;inset-inline-start:-1px;border-width:1px 0 0 1px}
.aperture::after{inset-block-end:-1px;inset-inline-end:-1px;border-width:0 1px 1px 0}

.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  padding:.82rem 1.3rem;font-size:.9rem;font-weight:500;letter-spacing:.01em;
  border:1px solid var(--ink);background:var(--ink);color:var(--paper-2);
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn:hover{background:var(--blue);border-color:var(--blue)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-l)}
.btn--ghost:hover{background:var(--ink);color:var(--paper-2);border-color:var(--ink)}
.on-dark .btn{background:var(--paper-2);color:var(--ink);border-color:var(--paper-2)}
.on-dark .btn:hover{background:var(--blue-2);border-color:var(--blue-2);color:var(--ink)}
.on-dark .btn--ghost{background:transparent;color:var(--paper);border-color:var(--line-d)}
.on-dark .btn--ghost:hover{background:var(--paper);color:var(--ink)}
.btn .arw{inline-size:1em;block-size:1em;flex:none}
html[dir="rtl"] .btn .arw{transform:scaleX(-1)}

/* ---------- header ---------- */
.hdr{
  position:sticky;inset-block-start:0;z-index:50;
  background:var(--ink);
  border-block-end:1px solid var(--line-d);
}
.hdr__in{display:flex;align-items:center;gap:1.5rem;min-block-size:4.25rem}
.brand{display:flex;align-items:center;gap:.65rem;color:var(--paper);flex:none}
.brand__mark{inline-size:1.5rem;block-size:1.5rem;flex:none}
.brand__txt{font-size:1.02rem;font-weight:500;letter-spacing:.11em;text-transform:uppercase}
html[lang="ar"] .brand__txt{letter-spacing:0;font-size:1.22rem;font-weight:600;text-transform:none}
.nav{display:flex;gap:1.75rem;margin-inline-start:auto;align-items:center}
.nav a{
  font-size:.86rem;color:var(--steel-2);padding-block:.4rem;position:relative;
  transition:color .2s var(--ease);
}
.nav a:hover,.nav a[aria-current="page"]{color:var(--paper)}
.nav a[aria-current="page"]::after{
  content:"";position:absolute;inset-block-end:-.15rem;inset-inline:0;block-size:1px;background:var(--blue-2);
}
.hdr__end{display:flex;align-items:center;gap:1rem;flex:none}
.lang{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.09em;color:var(--steel-2);
  border:1px solid var(--line-d);padding:.4rem .62rem;transition:.2s var(--ease);
}
.lang:hover{color:var(--paper);border-color:var(--steel)}
.hdr .btn{padding:.6rem 1rem;font-size:.84rem}
.burger{display:none;background:none;border:1px solid var(--line-d);padding:.55rem;cursor:pointer}
.burger svg{inline-size:1.1rem;block-size:1.1rem;stroke:var(--paper)}
@media (max-width:900px){
  .nav{
    position:fixed;inset-block-start:4.25rem;inset-inline:0;background:var(--ink);
    flex-direction:column;align-items:stretch;gap:0;padding:var(--gut);
    border-block-end:1px solid var(--line-d);margin:0;
  }
  .nav[hidden]{display:none}
  .nav a{padding-block:.9rem;border-block-end:1px solid var(--line-d);font-size:1rem}
  .burger{display:block;margin-inline-start:auto}
  .hdr .btn{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:var(--paper);overflow:hidden;isolation:isolate}
.hero__art{
  position:absolute;inset:0;z-index:-1;opacity:.9;
}
.hero__art svg{position:absolute;inset:0;inline-size:100%;block-size:100%}
.hero__art img{position:absolute;inset:0;inline-size:100%;block-size:100%;object-fit:cover;opacity:.5}
/* the optics sit on the trailing side; in RTL that becomes the leading side,
   so mirror the whole composition and the fade travels with it */
html[dir="rtl"] .hero__art{transform:scaleX(-1)}
.hero__in{
  padding-block:clamp(4.5rem,13vh,8.5rem) clamp(3.5rem,9vh,6rem);
  display:grid;gap:clamp(2rem,5vw,4rem);
  grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);align-items:end;
}
@media (max-width:980px){.hero__in{grid-template-columns:1fr;align-items:start}}
.hero h1{font-size:var(--fs-display);max-width:19ch;margin-block:1.6rem 0}
.hero__sub{margin-block-start:1.6rem;color:var(--steel-2);font-size:var(--fs-lead);max-width:44ch;line-height:1.55}
html[lang="ar"] .hero__sub{line-height:1.85}
.hero__cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-block-start:2.2rem}
.hero__side{display:grid;gap:1.4rem;padding-block-end:.4rem}
.fact{display:grid;gap:.3rem;padding-inline-start:1rem;border-inline-start:1px solid var(--line-d)}
.fact dt{font-family:var(--mono);font-size:.68rem;letter-spacing:.15em;text-transform:uppercase;color:var(--blue-2)}
html[lang="ar"] .fact dt{font-family:var(--sans);letter-spacing:0;font-size:.8rem;font-weight:600}
.fact dd{margin:0;font-size:.95rem;color:var(--steel-2);line-height:1.5}

/* ---------- sections ---------- */
.sec{padding-block:clamp(3.8rem,9vw,7.5rem)}
.sec--dark{background:var(--ink);color:var(--paper)}
.sec--ink2{background:var(--ink-2);color:var(--paper)}
.sec--tight{padding-block:clamp(2.6rem,5vw,4rem)}
.sec__head{display:grid;gap:1.3rem;margin-block-end:clamp(2.2rem,4vw,3.4rem);max-width:60rem}
.sec__head h2{font-size:var(--fs-h2);max-width:26ch}
.num{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;color:var(--blue)}
.sec--dark .num,.sec--ink2 .num{color:var(--blue-2)}

/* strip of facts */
.strip{display:grid;grid-template-columns:repeat(4,1fr);border-block-start:1px solid var(--line-l)}
.strip > div{padding:1.6rem 1.3rem;border-inline-end:1px solid var(--line-l)}
.strip > div:last-child{border-inline-end:0}
.strip h3{font-size:.95rem;font-weight:500;margin-block-end:.4rem}
.strip p{font-size:.86rem;color:var(--steel);line-height:1.55}
@media (max-width:860px){
  .strip{grid-template-columns:repeat(2,1fr)}
  .strip > div:nth-child(2n){border-inline-end:0}
  .strip > div{border-block-end:1px solid var(--line-l)}
}
@media (max-width:440px){.strip{grid-template-columns:1fr}.strip>div{border-inline-end:0}}

/* two-column prose */
.cols2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(1.6rem,4vw,3.4rem)}
@media (max-width:860px){.cols2{grid-template-columns:1fr}}

/* technology cards */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line-l)}
@media (max-width:1040px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){
  .cards{grid-template-columns:1fr}
  .card--fill{display:none}
}
.card--fill{background:var(--paper)}
.card{
  background:var(--paper);padding:clamp(1.5rem,2.4vw,2.1rem);
  display:grid;gap:1rem;align-content:start;position:relative;
  transition:background .3s var(--ease);
}
.card:hover{background:var(--paper-2)}
.card__ico{inline-size:3.1rem;block-size:3.1rem;color:var(--blue)}
.card h3{font-size:var(--fs-h3);font-weight:500}
.card p{font-size:.92rem;color:var(--steel);line-height:1.6}
.card ul,.ptlist{margin:0;padding:0;list-style:none;display:grid;gap:.42rem}
.ptlist{gap:.55rem}
.card li,.ptlist li{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.055em;color:var(--steel);
  text-transform:uppercase;padding-inline-start:.9rem;position:relative;
}
.ptlist li{color:var(--steel-2);font-size:.78rem}
html[lang="ar"] .card li,html[lang="ar"] .ptlist li{font-family:var(--sans);letter-spacing:0;font-size:.9rem;text-transform:none}
.card li::before,.ptlist li::before{
  content:"";position:absolute;inset-inline-start:0;inset-block-start:.58em;
  inline-size:4px;block-size:1px;background:var(--blue);
}

/* numbered process */
.steps{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));
  border-block-start:1px solid var(--line-d);border-inline-start:1px solid var(--line-d);
}
.step{
  padding:clamp(1.5rem,2.4vw,2.1rem);display:grid;gap:.85rem;align-content:start;
  border-block-end:1px solid var(--line-d);border-inline-end:1px solid var(--line-d);
}
.step__n{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;color:var(--blue-2)}
.step h3{font-size:1.06rem;font-weight:500}
.step p{font-size:.9rem;color:var(--steel-2);line-height:1.6}

/* split feature */
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(2rem,5vw,4.5rem);align-items:center}
@media (max-width:900px){.split{grid-template-columns:1fr}}
.split__art{position:relative;aspect-ratio:4/3;background:var(--ink-3);overflow:hidden}
.split__art svg{position:absolute;inset:0;inline-size:100%;block-size:100%}
.split__art img{position:absolute;inset:0;inline-size:100%;block-size:100%;object-fit:cover}

/* list of served sectors */
.sectors{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));
  border-block-start:1px solid var(--line-l);border-inline-start:1px solid var(--line-l);
}
.sectors div{
  padding:1.4rem 1.3rem;display:flex;gap:.8rem;align-items:baseline;
  border-block-end:1px solid var(--line-l);border-inline-end:1px solid var(--line-l);
}
.sectors span{font-family:var(--mono);font-size:.7rem;color:var(--blue);flex:none}
.sectors p{font-size:.95rem}

/* contact */
.form{display:grid;gap:1.1rem}
.field{display:grid;gap:.42rem}
.field label{font-family:var(--mono);font-size:.69rem;letter-spacing:.13em;text-transform:uppercase;color:var(--steel)}
html[lang="ar"] .field label{font-family:var(--sans);letter-spacing:0;font-size:.82rem;font-weight:600}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:.96rem;color:var(--ink);background:var(--paper-2);
  border:1px solid var(--line-l);padding:.78rem .9rem;inline-size:100%;
  transition:border-color .2s var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);outline:none}
.field textarea{min-block-size:7rem;resize:vertical}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem}
@media (max-width:620px){.two{grid-template-columns:1fr}}
.contact-list{display:grid;gap:1.3rem;margin:0}
.contact-list dt{font-family:var(--mono);font-size:.69rem;letter-spacing:.13em;text-transform:uppercase;color:var(--steel);margin-block-end:.25rem}
html[lang="ar"] .contact-list dt{font-family:var(--sans);letter-spacing:0;font-size:.82rem;font-weight:600}
.contact-list dd{margin:0;font-size:1rem}
.contact-list a:hover{color:var(--blue)}

/* notice */
.notice{
  border:1px solid var(--line-l);border-inline-start:2px solid var(--blue);
  padding:1rem 1.2rem;font-size:.88rem;color:var(--steel);line-height:1.6;
}
.sec--dark .notice,.sec--ink2 .notice{border-color:var(--line-d);border-inline-start-color:var(--blue-2);color:var(--steel-2)}

/* footer */
.ftr{background:var(--ink);color:var(--steel-2);padding-block:clamp(3rem,6vw,4.5rem) 2rem;font-size:.88rem}
.ftr__top{display:grid;grid-template-columns:minmax(0,1.3fr) repeat(2,minmax(0,1fr));gap:2.4rem}
@media (max-width:820px){.ftr__top{grid-template-columns:1fr 1fr}.ftr__brand{grid-column:1/-1}}
@media (max-width:480px){.ftr__top{grid-template-columns:1fr}}
.ftr h4{font-family:var(--mono);font-size:.68rem;letter-spacing:.15em;text-transform:uppercase;color:var(--paper);margin-block-end:1rem;font-weight:400}
html[lang="ar"] .ftr h4{font-family:var(--sans);letter-spacing:0;font-size:.82rem;font-weight:600}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.ftr a:hover{color:var(--paper)}
.ftr__brand .brand{margin-block-end:1.1rem}
.ftr__bot{
  margin-block-start:clamp(2.4rem,5vw,3.6rem);padding-block-start:1.6rem;
  border-block-start:1px solid var(--line-d);display:flex;flex-wrap:wrap;gap:1rem 2rem;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;
}
html[lang="ar"] .ftr__bot{font-family:var(--sans);letter-spacing:0;font-size:.82rem}
.ftr__bot .sp{margin-inline-start:auto}

/* scroll reveal */
.rv{opacity:0;transform:translateY(14px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

.skip{position:absolute;inset-inline-start:-9999px}
.skip:focus{inset-inline-start:var(--gut);inset-block-start:.6rem;z-index:99;background:var(--paper-2);color:var(--ink);padding:.6rem 1rem}