/* AL-SAMA MARBLE — site styles */
:root{
  --navy:#1d3557;
  --navy-2:#142640;
  --blue:#1a8cff;
  --blue-dark:#0b6fd6;
  --grey:#8a939c;
  --light:#f4f6f8;
  --line:#e3e7eb;
  --text:#2d3640;
  --white:#fff;
  --header-h:96px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Jost',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--white);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(1200px,100% - 40px);margin-inline:auto}

/* ---------- Header ---------- */
.site-header{position:fixed;inset:0 0 auto 0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);box-shadow:0 1px 0 var(--line);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(20,38,64,.08)}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:18px}
.brand .logo{height:64px;width:auto}
.brand .tagline{padding-left:18px;border-left:1px solid var(--line);font-size:13px;line-height:1.25;letter-spacing:.18em;text-transform:uppercase;color:var(--grey);font-weight:500}
.nav>ul{list-style:none;display:flex;gap:4px;align-items:center}
.nav>ul>li{position:relative}
.nav a{display:block;padding:10px 14px;font-weight:500;font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--navy);transition:color .2s}
.nav a:hover,.nav a.active{color:var(--blue)}
.nav li.has-sub>a::after{content:"";display:inline-block;width:6px;height:6px;margin-left:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-3px) rotate(45deg)}
.sub{list-style:none;position:absolute;top:100%;left:0;min-width:250px;background:var(--white);box-shadow:0 14px 34px rgba(20,38,64,.14);border-top:3px solid var(--blue);padding:8px 0;opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s}
.nav li:hover>.sub,.nav li:focus-within>.sub{opacity:1;visibility:visible;transform:none}
.sub a{font-size:13px;padding:9px 20px}
.menu-toggle{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;color:var(--navy)}
.menu-toggle span{display:block;height:2px;background:currentColor;margin:6px 8px;transition:.3s}

/* ---------- Hero slider ---------- */
.hero{position:relative;height:100vh;min-height:560px;overflow:hidden;background:var(--navy-2)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.2s ease}
.slide.active{opacity:1;z-index:1}
.slide img{width:100%;height:100%;object-fit:cover;transform:scale(1.08);transition:transform 7s ease}
.slide.active img{transform:scale(1)}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,38,64,.75) 0%,rgba(20,38,64,.25) 55%,rgba(20,38,64,.1) 100%)}
.slide-caption{position:absolute;z-index:2;left:max(20px,calc((100% - 1200px)/2));bottom:18%;color:#fff}
.slide-caption small{display:block;font-size:14px;letter-spacing:.3em;text-transform:uppercase;color:#9fd0ff;margin-bottom:10px}
.slide-caption h3{font-size:clamp(42px,8vw,96px);font-weight:700;line-height:1;letter-spacing:.02em;text-transform:uppercase;opacity:0;transform:translateY(30px);transition:.9s .3s}
.slide.active .slide-caption h3{opacity:1;transform:none}
.slide-caption a{display:inline-block;margin-top:26px;font-size:14px;letter-spacing:.15em;text-transform:uppercase;border-bottom:2px solid var(--blue);padding-bottom:4px}
.hero-nav{position:absolute;z-index:3;right:max(20px,calc((100% - 1200px)/2));bottom:8%;display:flex;gap:10px;align-items:center}
.hero-nav button{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.4);color:#fff;width:46px;height:46px;cursor:pointer;font-size:20px;transition:.2s}
.hero-nav button:hover{background:var(--blue);border-color:var(--blue)}
.dots{position:absolute;z-index:3;left:max(20px,calc((100% - 1200px)/2));bottom:8%;display:flex;gap:10px}
.dots button{width:34px;height:3px;border:0;background:rgba(255,255,255,.35);cursor:pointer}
.dots button.active{background:var(--blue)}

/* ---------- Sections ---------- */
section{padding:90px 0}
.section-light{background:var(--light)}
.title{font-size:clamp(28px,4vw,42px);font-weight:300;color:var(--navy);text-transform:uppercase;letter-spacing:.04em;line-height:1.2;margin-bottom:26px}
.title b{font-weight:700;color:var(--blue)}
.title::after{content:"";display:block;width:70px;height:3px;background:var(--blue);margin-top:18px}
.title.center{text-align:center}.title.center::after{margin-inline:auto}
.lead{font-size:18px;color:#4b5762;max-width:900px}
.btn{display:inline-block;padding:12px 28px;border:2px solid var(--blue);color:var(--blue);font-weight:500;font-size:14px;letter-spacing:.12em;text-transform:uppercase;transition:.25s;background:transparent;cursor:pointer}
.btn:hover{background:var(--blue);color:#fff}
.btn.solid{background:var(--blue);color:#fff}.btn.solid:hover{background:var(--blue-dark);border-color:var(--blue-dark)}
.about-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:60px;align-items:center}
.about-grid p{margin-bottom:16px}
.about-img{position:relative}
.about-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.about-img::before{content:"";position:absolute;inset:-18px 18px 18px -18px;border:3px solid var(--blue);z-index:-1}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:60px}
.stat{background:#fff;padding:28px 22px;border-bottom:3px solid var(--blue);box-shadow:0 8px 24px rgba(20,38,64,.06)}
.stat b{display:block;font-size:40px;font-weight:700;color:var(--navy);line-height:1}
.stat span{font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--grey)}

/* Downloads */
.downloads{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.dl-card{background:#fff;box-shadow:0 10px 30px rgba(20,38,64,.08);overflow:hidden;display:flex;flex-direction:column;transition:transform .3s}
.dl-card:hover{transform:translateY(-6px)}
.dl-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.dl-card .body{padding:24px;flex:1;display:flex;flex-direction:column;gap:14px}
.dl-card h3{color:var(--navy);text-transform:uppercase;letter-spacing:.05em;font-size:20px}
.dl-card .btn{align-self:flex-start;margin-top:auto}

/* Projects */
.filters{display:flex;gap:10px;margin-bottom:36px;flex-wrap:wrap}
.filters button{padding:10px 22px;border:1px solid var(--line);background:#fff;color:var(--navy);font:500 14px 'Jost',sans-serif;letter-spacing:.1em;text-transform:uppercase;cursor:pointer}
.filters button.active,.filters button:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.p-card{position:relative;overflow:hidden;background:var(--navy);display:block;aspect-ratio:4/3}
.p-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s,opacity .4s}
.p-card:hover img{transform:scale(1.07);opacity:.55}
.p-card .info{position:absolute;inset:auto 0 0 0;padding:22px;color:#fff;background:linear-gradient(0deg,rgba(20,38,64,.92),rgba(20,38,64,0))}
.p-card .tag{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:#9fd0ff}
.p-card h3{font-size:17px;line-height:1.35;font-weight:600;margin-top:4px}
.p-card.hide{display:none}

/* Page banner */
.page-banner{padding:calc(var(--header-h) + 90px) 0 70px;background:var(--navy) center/cover no-repeat;position:relative;color:#fff}
.page-banner::before{content:"";position:absolute;inset:0;background:rgba(20,38,64,.72)}
.page-banner .container{position:relative}
.page-banner h1{font-size:clamp(32px,5vw,56px);font-weight:700;text-transform:uppercase;letter-spacing:.04em;line-height:1.1}
.page-banner p{margin-top:12px;color:#d6e4f3;max-width:700px}
.crumbs{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:#9fd0ff;margin-bottom:14px}

/* Partners / team */
.partners{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.partner{background:#fff;padding:34px 30px;box-shadow:0 10px 30px rgba(20,38,64,.07);border-top:4px solid var(--blue)}
.partner h3{color:var(--navy);font-size:22px}
.partner .role{color:var(--blue);font-weight:500;font-size:14px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;display:block}
.partner p{font-size:15px;margin-bottom:10px;color:#4b5762}
.team-groups{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.team-group{background:#fff;padding:28px 30px;border-left:4px solid var(--blue)}
.team-group h3{color:var(--navy);text-transform:uppercase;letter-spacing:.06em;font-size:18px;margin-bottom:14px}
.team-group ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 20px}
.team-group li b{display:block;color:var(--navy);font-weight:600}
.team-group li span{font-size:13px;color:var(--grey)}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.value{padding:30px;background:#fff;box-shadow:0 8px 24px rgba(20,38,64,.06)}
.value .num{font-size:34px;font-weight:700;color:var(--blue);line-height:1}
.value h3{color:var(--navy);font-size:18px;margin:12px 0 8px}
.value p{font-size:15px;color:#4b5762}

/* Services */
.services{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.service{display:grid;grid-template-columns:200px 1fr;background:#fff;box-shadow:0 10px 30px rgba(20,38,64,.07);overflow:hidden}
.service img{height:100%;width:100%;object-fit:cover;min-height:220px}
.service .body{padding:28px}
.service h3{color:var(--navy);text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px;font-size:19px}
.service p{font-size:15px;color:#4b5762}

/* Structure */
.org{display:grid;gap:16px;justify-items:center}
.org .node{background:var(--navy);color:#fff;padding:14px 26px;text-align:center;font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:14px;min-width:220px}
.org .node.top{background:var(--blue)}
.org .row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;width:100%;position:relative;padding-top:20px}
.org .row::before{content:"";position:absolute;top:0;left:16.6%;right:16.6%;height:2px;background:var(--line)}
.org .row .node{position:relative;background:#fff;color:var(--navy);border:2px solid var(--navy)}
.org .row .node::before{content:"";position:absolute;top:-20px;left:50%;width:2px;height:20px;background:var(--line)}
.org .stem{width:2px;height:20px;background:var(--line)}
.dept{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:50px}
.dept div{background:#fff;padding:30px;box-shadow:0 8px 24px rgba(20,38,64,.06)}
.dept h3{color:var(--navy);text-transform:uppercase;font-size:17px;letter-spacing:.05em;margin-bottom:10px}
.dept p{font-size:15px;color:#4b5762}

/* Clients */
.clients{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:center}
.clients div{background:#fff;padding:22px;display:grid;place-items:center;height:120px;border:1px solid var(--line);filter:grayscale(1);opacity:.75;transition:.3s}
.clients div:hover{filter:none;opacity:1}
.clients img{max-height:70px;width:auto}

/* Project detail */
.detail{display:grid;grid-template-columns:1.4fr 1fr;gap:50px;align-items:start}
.gallery{display:grid;gap:16px}
.gallery img{width:100%;max-height:640px;object-fit:cover}
.facts{background:var(--light);padding:30px;border-top:4px solid var(--blue);position:sticky;top:calc(var(--header-h) + 20px)}
.facts dl{display:grid;gap:14px}
.facts dt{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--grey)}
.facts dd{color:var(--navy);font-weight:500}
.pager{display:flex;justify-content:space-between;gap:20px;margin-top:50px;padding-top:26px;border-top:1px solid var(--line)}
.pager a{color:var(--navy);font-weight:500;max-width:45%}
.pager a:hover{color:var(--blue)}
.pager small{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--grey)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:50px}
.contact-info li{list-style:none;display:flex;gap:14px;margin-bottom:22px}
.contact-info .ic{width:44px;height:44px;flex:none;display:grid;place-items:center;background:var(--blue);color:#fff}
.contact-info b{display:block;color:var(--navy)}
form .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
form label{display:block;font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--navy);margin:0 0 6px}
form input,form textarea,form select{width:100%;padding:13px 14px;border:1px solid var(--line);font:inherit;margin-bottom:18px;background:#fff}
form input:focus,form textarea:focus{outline:2px solid var(--blue);border-color:transparent}
.map{margin-top:50px;border:0;width:100%;height:380px;filter:grayscale(.3)}
.notice{padding:14px 18px;margin-bottom:20px;border-left:4px solid var(--blue);background:#eaf4ff;color:var(--navy);display:none}
.notice.show{display:block}

/* Library */
.videos{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.video-cta{text-align:center;padding:60px 30px;background:#fff;box-shadow:0 10px 30px rgba(20,38,64,.07)}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-2);color:#c6d2df;padding:70px 0 0;position:relative;overflow:hidden}
.site-footer::after{content:"";position:absolute;right:-40px;bottom:40px;width:520px;height:310px;background:url(../img/world-map.png) center/contain no-repeat;opacity:.12;pointer-events:none}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:40px;position:relative;z-index:1}
.site-footer h4{color:#fff;font-size:16px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:18px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer a:hover{color:#fff}
.site-footer .f-logo{height:62px;width:auto;margin-bottom:18px}
.site-footer em{color:#9fd0ff;font-style:normal;display:block;margin-bottom:8px}
.social{display:flex;gap:10px}
.social a{width:40px;height:40px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.25);transition:.2s}
.social a:hover{background:var(--blue);border-color:var(--blue)}
.social svg{width:18px;height:18px;fill:currentColor}
.footer-bottom{margin-top:56px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:20px;font-size:14px;position:relative;z-index:1}
.to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;background:var(--blue);color:#fff;border:0;cursor:pointer;opacity:0;visibility:hidden;transition:.3s;z-index:90;font-size:20px}
.to-top.show{opacity:1;visibility:visible}
.wa{position:fixed;right:20px;bottom:78px;width:54px;height:54px;border-radius:50%;background:#25d366;display:grid;place-items:center;z-index:90;box-shadow:0 6px 18px rgba(0,0,0,.2)}
.wa svg{width:28px;height:28px;fill:#fff}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s,transform .8s}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .projects-grid,.downloads,.partners,.values,.videos,.dept{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .clients{grid-template-columns:repeat(2,1fr)}
  .services{grid-template-columns:1fr}
}
@media (max-width:900px){
  :root{--header-h:76px}
  .brand .logo{height:46px}
  .brand .tagline{display:none}
  .menu-toggle{display:block}
  .nav{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:#fff;overflow:auto;transform:translateX(100%);transition:transform .35s}
  .nav.open{transform:none}
  .nav>ul{flex-direction:column;align-items:stretch;padding:10px 0}
  .nav a{padding:14px 20px;border-bottom:1px solid var(--line)}
  .sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0;background:var(--light)}
  .sub a{padding-left:36px}
  .about-grid,.detail,.contact-grid{grid-template-columns:1fr}
  .facts{position:static}
  .team-groups{grid-template-columns:1fr}
}
@media (max-width:640px){
  section{padding:64px 0}
  .projects-grid,.downloads,.partners,.values,.videos,.dept,.footer-grid,.stats{grid-template-columns:1fr}
  .service{grid-template-columns:1fr}
  .service img{min-height:200px;max-height:240px}
  .team-group ul{grid-template-columns:1fr}
  form .row2{grid-template-columns:1fr}
  .org .row{grid-template-columns:1fr}
  .org .row::before,.org .row .node::before{display:none}
  .footer-bottom{flex-direction:column}
  .hero-nav{display:none}
}