/* SETAEI homepage: fixed 3D scene behind scrolling sections (see /assets/home/home.js) */
:root{--bg:#10100F;--bg-card:#181A1B;--ink:#FFFAF0;--text:#FFFAF0;--muted:#D6D0C4;--dim:#B7B0A4;--accent:#F47A2A;--accent-h:#FF8C40;--shade:rgba(16,16,15,.88);--line:rgba(255,250,240,.14);--border:#ffffff30;--display:'Space Grotesk','Inter',sans-serif;--sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;color-scheme:dark}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
html[lang="fa"] body{font-family:'Noto Sans Arabic',var(--sans)}
a{color:var(--ink)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip{position:fixed;left:-9999px;top:0;z-index:500;background:var(--accent);color:#10100F;padding:12px 18px;font-weight:700}
.skip:focus{left:12px;top:12px}

#scene{position:fixed;inset:0;width:100%;height:100%;display:block;z-index:0}
.home-shade{position:fixed;inset:0;pointer-events:none;z-index:1;background:linear-gradient(90deg,var(--bg) 0%,var(--shade) 36%,rgba(16,16,15,0) 64%)}
html[dir="rtl"] .home-shade{background:linear-gradient(270deg,var(--bg) 0%,var(--shade) 36%,rgba(16,16,15,0) 64%)}

.home-dots{position:fixed;right:max(14px,2vw);top:50%;transform:translateY(-50%);z-index:5;display:flex;flex-direction:column;gap:2px}
html[dir="rtl"] .home-dots{right:auto;left:max(14px,2vw)}
.home-dots a{display:flex;align-items:center;justify-content:center;width:44px;height:40px;color:var(--muted)}
.home-dots a::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor;opacity:.5;transition:transform .3s,opacity .3s,background .3s}
.home-dots a[aria-current="step"]::before{background:var(--accent);opacity:1;transform:scale(1.5)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.home{position:relative;z-index:2}
.home section{min-height:100vh;min-height:100svh;display:flex;align-items:center;padding:120px 6vw 90px}
.home .copy{max-width:36rem}
.home .wide{max-width:44rem}
.home .step{margin:0 0 1.1rem;color:var(--accent);font-weight:500;font-size:1rem;font-variant-numeric:tabular-nums}
.home h1,.home h2{margin:0 0 1.4rem;font-family:var(--display);font-weight:700;letter-spacing:-.025em;line-height:1.02;color:var(--ink)}
html[lang="fa"] .home h1,html[lang="fa"] .home h2{font-family:'Noto Sans Arabic',var(--display);letter-spacing:0;line-height:1.25}
.home h1{font-size:clamp(2.7rem,6vw,5.2rem)}
.home h2{font-size:clamp(2.1rem,4.4vw,3.6rem)}
.home h3{margin:0 0 .35rem;font-size:1.06rem;font-weight:700}
.home p{margin:0;font-size:1.125rem;line-height:1.6;color:var(--muted);max-width:32rem}
.home p + p{margin-top:1rem}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;margin-top:2rem}
.home .cta{display:inline-flex;align-items:center;min-height:48px;padding:0 1.6rem;border:0;border-radius:999px;background:var(--accent)!important;color:#10100F!important;font:700 1rem var(--sans);text-decoration:none;cursor:pointer}
.home .cta:hover{background:var(--accent-h)!important}
.home .link{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);font-weight:500}
.home .link:hover{border-color:var(--accent)}
.services{list-style:none;margin:2.2rem 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:28px 36px}
.services svg{width:26px;height:26px;margin-bottom:.7rem;fill:none;stroke:var(--accent);stroke-width:1.5;stroke-linejoin:round;stroke-linecap:round}
.home .services p{font-size:.98rem;line-height:1.55}
.projects{list-style:none;margin:2rem 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 36px;border-top:1px solid var(--line)}
.projects li{border-bottom:1px solid var(--line)}
.projects a,.projects .item{display:flex;justify-content:space-between;align-items:baseline;gap:12px;min-height:52px;padding:14px 0;text-decoration:none}
.projects b{font-weight:500}
.projects small{color:var(--muted);font-size:.85rem;text-align:end}
.projects a:hover b{color:var(--accent)}
.chain{list-style:none;margin:1.8rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.chain li{padding:8px 14px;border:1px solid var(--line);border-radius:999px;font-size:.92rem}
.chain li:last-child{border-color:var(--accent)}
.home .certs{margin-top:1.8rem;font-size:.98rem}
.certs strong{color:var(--ink);font-weight:500}
.home-footer{display:flex;flex-wrap:wrap;gap:4px 24px;margin-top:3.5rem;color:var(--muted);font-size:.92rem}
.home-footer a,.home-footer span{display:inline-flex;align-items:center;min-height:44px;color:var(--muted);text-decoration:none}
.home-footer a:hover{color:var(--ink)}

@media (max-width:820px){
  .home-shade,html[dir="rtl"] .home-shade{background:linear-gradient(180deg,rgba(16,16,15,0) 0%,rgba(16,16,15,.15) 30%,var(--shade) 55%,var(--bg) 100%)}
  .home section{align-items:flex-end;padding:110px 5vw calc(env(safe-area-inset-bottom,0px) + 56px)}
  .home .copy{background:rgba(16,16,15,.72);padding:22px 20px;border-radius:18px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
  .services,.projects{grid-template-columns:1fr}
  .home p{font-size:1.04rem}
}
@media (max-width:520px){.home-dots{display:none}}

/* Contact sheet (same markup and API as the previous homepage) */
.contact-overlay{position:fixed;inset:0;z-index:220;background:rgba(16,16,15,.55);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:opacity .25s ease}
.contact-overlay.open{opacity:1;visibility:visible}
.contact-sheet{position:fixed;left:50%;bottom:0;z-index:230;width:100%;max-width:560px;transform:translate(-50%,100%);transition:transform .35s cubic-bezier(.2,.85,.3,1);background:var(--bg-card);border:1px solid var(--border);border-bottom:none;border-radius:18px 18px 0 0;box-shadow:0 -20px 60px rgba(0,0,0,.3);padding:26px 28px 30px;max-height:92vh;overflow:auto;color:var(--text)}
.contact-sheet[aria-hidden="true"]{visibility:hidden}
.contact-sheet.open{transform:translate(-50%,0);visibility:visible}
.contact-sheet h3{margin:0 0 6px;font-family:var(--display);font-size:22px;font-weight:700;letter-spacing:-.4px}
.contact-sheet .sub{margin:0 0 22px;color:var(--muted);font-size:14px}
.contact-sheet .grab{display:none}
.contact-close{position:absolute;top:16px;right:16px;width:32px;height:32px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--muted);font-size:18px;line-height:1;cursor:pointer}
html[dir="rtl"] .contact-close{right:auto;left:16px}
.contact-close:hover{border-color:var(--accent);color:var(--accent)}
.contact-form{display:grid;gap:12px}
.contact-form[hidden],.contact-success[hidden]{display:none}
.contact-form label{display:block;margin-bottom:4px;font-size:14px;color:var(--muted);font-weight:500}
.contact-form input,.contact-form textarea{width:100%;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font:16px var(--sans);transition:border-color .2s,box-shadow .2s}
.contact-form input:focus,.contact-form textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(244,122,42,.12)}
.contact-form textarea{resize:vertical;min-height:110px}
.contact-form .hp{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}
.contact-form .submit,.contact-success .submit{border:0;border-radius:999px;padding:14px;background:var(--accent);color:#10100F;font:700 14px var(--sans);cursor:pointer;margin-top:6px}
.contact-form .submit:hover{background:var(--accent-h)}
.contact-form .submit:disabled{opacity:.7;cursor:not-allowed}
.contact-form .status{font-size:13px;margin-top:4px;min-height:18px}
.contact-form .status.ok{color:#70D7E8}
.contact-form .status.err{color:#E5735F}
.contact-form .note{margin:8px 0 0;font-size:12px;color:var(--dim)}
.contact-success{text-align:center;padding:12px 4px 4px}
.contact-success .sub{max-width:360px;margin-left:auto;margin-right:auto}
.contact-success .submit{min-width:140px;padding:12px 20px;background:transparent;color:var(--text);border:1px solid var(--border)}
.success-check{display:flex;align-items:center;justify-content:center;width:56px;height:56px;margin:0 auto 18px;border-radius:50%;background:rgba(244,122,42,.12);color:var(--accent)}
@media (max-width:540px){.contact-sheet{padding:22px 20px 26px}.contact-sheet h3{font-size:19px}}

/* homepage hotfix: shahnameh video + certification logos */
.shah-stage{position:relative;overflow:hidden;isolation:isolate}
.shah-stage .copy{position:relative;z-index:3;max-width:36rem}
.shah-film{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.shah-film::before,.shah-film::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none}
.shah-film::before{background:linear-gradient(90deg,rgba(16,16,15,.98) 0%,rgba(16,16,15,.84) 34%,rgba(16,16,15,.34) 70%,rgba(16,16,15,.72) 100%)}
.shah-film::after{background:radial-gradient(circle at 68% 48%,rgba(244,122,42,.12),transparent 46%),linear-gradient(180deg,rgba(16,16,15,.12),rgba(16,16,15,.48))}
.shah-film video{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:cover;opacity:.36;filter:saturate(.72) contrast(.9) brightness(.72) blur(.8px);transform:scale(1.04)}
.certs{margin-top:1.8rem}
.certs>p{font-size:.9rem!important;text-transform:uppercase;letter-spacing:.12em;color:var(--dim)!important}
.cert-logos{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;max-width:42rem}
.cert-logos span{display:flex;align-items:center;gap:10px;min-width:132px;height:64px;padding:10px 14px;border:1px solid var(--line);border-radius:14px;background:rgba(16,16,15,.46);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);overflow:hidden}
.cert-logos img{display:block!important;width:auto!important;height:auto!important;max-width:58px!important;max-height:28px!important;object-fit:contain!important;flex:0 0 auto;filter:grayscale(1) brightness(2);opacity:.92}
.cert-logos small{font-size:.72rem;line-height:1.2;color:var(--muted)}
@media(max-width:820px){.shah-film::before{background:linear-gradient(180deg,rgba(16,16,15,.10) 0%,rgba(16,16,15,.38) 42%,rgba(16,16,15,.94) 80%)}.shah-film video{opacity:.32}.cert-logos{display:grid;grid-template-columns:1fr 1fr}.cert-logos span{min-width:0;width:100%}}
@media(max-width:480px){.cert-logos{grid-template-columns:1fr}.cert-logos span{height:58px}}
@media(prefers-reduced-motion:reduce){.shah-film video{display:none}}

/* premium certification / technology grid */
.certs-premium{margin-top:2.15rem}
.certs-premium>p{margin-bottom:1rem!important;font-size:.78rem!important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,250,240,.68)!important}
.premium-grid{display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:28px 42px!important;max-width:860px!important;align-items:center!important}
.premium-grid .cert-card{position:relative;display:flex!important;min-width:0!important;height:86px!important;padding:0!important;align-items:center!important;justify-content:center!important;border:0!important;border-radius:0!important;background:transparent!important;box-shadow:none!important;overflow:visible;transition:transform .28s ease,opacity .28s ease}
.premium-grid .cert-card::after{display:none!important}
.premium-grid .cert-card:hover{transform:translateY(-3px) scale(1.04);opacity:1}
.premium-grid .cert-card:hover::after{display:none!important}
.premium-grid .cert-mark{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;width:100%;height:66px}
.premium-grid .cert-mark img{display:block!important;width:auto!important;height:auto!important;max-width:164px!important;max-height:60px!important;object-fit:contain!important;object-position:center!important;filter:none!important;opacity:.96!important}
.premium-grid .cert-card:nth-child(1) .cert-mark img{max-width:142px!important;max-height:52px!important}
.premium-grid .cert-card:nth-child(2) .cert-mark img,.premium-grid .cert-card:nth-child(3) .cert-mark img,.premium-grid .cert-card:nth-child(4) .cert-mark img,.premium-grid .cert-card:nth-child(5) .cert-mark img{width:60px!important;height:60px!important}.premium-grid .cert-card:nth-child(2) .cert-mark img{filter:brightness(0) invert(1)!important}
.premium-grid .cert-card:nth-child(6) .cert-mark img{max-width:170px!important;max-height:48px!important}
@media(max-width:900px){.premium-grid{grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:24px 28px!important}.premium-grid .cert-card{height:78px!important}}
@media(max-width:620px){.premium-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:22px 24px!important}.premium-grid .cert-card{height:72px!important;padding:0!important}.premium-grid .cert-mark{height:56px}.premium-grid .cert-mark img{max-height:52px!important}.premium-grid .cert-card:nth-child(2) .cert-mark img,.premium-grid .cert-card:nth-child(3) .cert-mark img,.premium-grid .cert-card:nth-child(4) .cert-mark img,.premium-grid .cert-card:nth-child(5) .cert-mark img{width:52px!important;height:52px!important}}

/* SETAEI glass continuity 2026-10-01 */
.home section .copy{
  position:relative;
  padding:clamp(20px,3vw,34px);
  border:1px solid rgba(255,250,240,.09);
  border-radius:26px;
  background:linear-gradient(135deg,rgba(16,16,15,.46),rgba(16,16,15,.20));
  -webkit-backdrop-filter:blur(8px) saturate(1.08);
  backdrop-filter:blur(8px) saturate(1.08);
  box-shadow:0 18px 55px rgba(0,0,0,.16);
}
.home section .copy::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(115deg,rgba(255,255,255,.035),transparent 38%,rgba(244,122,42,.025));
}
.home section .copy>*{position:relative;z-index:1}
@media(max-width:820px){
  .home-shade,html[dir="rtl"] .home-shade{background:linear-gradient(180deg,rgba(16,16,15,0) 0%,rgba(16,16,15,.08) 28%,rgba(16,16,15,.36) 58%,rgba(16,16,15,.62) 100%)}
  .home .copy{background:linear-gradient(155deg,rgba(16,16,15,.48),rgba(16,16,15,.25));-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);border-color:rgba(255,250,240,.08)}
}