:root{
  --bg:#0c0e12;
  --muted:#141823;
  --card:#171b27;
  --text:#e8ecf7;
  --text-dim:#aab3c7;
  --brand:#3aa3ff;
  --brand-2:#6d5cff;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.5;
}

/* Header */
.site-header{
  position:fixed; top:0; left:0; right:0;
  display:flex; gap:16px; align-items:center; justify-content:flex-end;
  padding:14px 20px;
  background:linear-gradient(to bottom, rgba(12,14,18,0.9), rgba(12,14,18,0.0));
  z-index:40;
}
.brand{
  margin-right:auto; text-decoration:none; color:var(--text);
  font-weight:800; font-size:1.1rem; letter-spacing:0.5px;
}
.brand span{color:var(--brand)}
.nav-toggle{display:none; background:transparent; border:0; color:var(--text); font-size:1.4rem}
.site-nav a{
  color:var(--text); text-decoration:none; margin-left:16px; padding:8px 12px; border-radius:12px;
}
.site-nav a:hover,.site-nav a.active{background:rgba(255,255,255,0.08)}

/* Hero slider */
.hero{position:relative; height:100vh; overflow:hidden}
.slides{height:100%; width:100%; position:relative}
.slide{
  position:absolute; inset:0; background-size:cover; background-position:center; opacity:0; transform:scale(1.05);
  transition:opacity .8s ease, transform 1.6s ease;
}
.slide::after{
  content:""; position:absolute; inset:0; background:linear-gradient(180deg, rgba(0,0,0,0.4), rgba(12,14,18,0.6));
}
.slide.is-active{opacity:1; transform:scale(1)}
.overlay{
  position:absolute; inset:auto 0 18%; z-index:2; text-align:center; padding:0 20px;
}
.overlay h1{font-size:clamp(28px,4.5vw,64px); margin:0 0 10px}
.overlay p{color:var(--text-dim); margin:0}
.hero-dots{
  position:absolute; bottom:16px; left:50%; transform:translateX(-50%);
  display:flex; gap:10px; z-index:5;
}
.dot{
  width:10px; height:10px; border-radius:50%; border:2px solid white; background:transparent; opacity:.7;
}
.dot.is-active{background:white; opacity:1}

/* Panels */
.container{max-width:1200px; margin:0 auto; padding:60px 20px}
.panels h2,.partners h2{margin:0 0 18px}
.panel-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:24px;
}
.panel-card{
  display:block; position:relative; overflow:hidden; border-radius:18px; background:var(--card);
  transform:scale(.88); opacity:.55; transition:transform .8s ease, opacity .8s ease, box-shadow .8s ease;
}
.panel-card img{width:100%; height:420px; object-fit:cover; display:block; transform:scale(1.02); transition:transform .6s ease}
.panel-card:hover img{transform:scale(1.18)}
.panel-card.in-view{transform:scale(1); opacity:1; box-shadow:0 10px 30px rgba(0,0,0,.35)}
.card-caption{
  position:absolute; left:16px; bottom:16px; background:rgba(0,0,0,.45); padding:12px 14px; border-radius:12px;
}

/* Partners marquee */
.marquee{
  overflow:hidden; border-radius:16px; background:var(--muted);
  padding:12px 0; position:relative;
}
.track{
  display:flex; align-items:center; gap:40px; width:fit-content;
  animation:scroll 30s linear infinite;
}
.track img{height:168px; width:auto; filter:grayscale(100%) brightness(130%); opacity:.9}
.track img:hover{filter:none; opacity:1}
@keyframes scroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}

/* Footer */
.site-footer{background:#0b0d13; border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{
  display:grid; grid-template-columns:2fr 1fr 1fr; gap:20px; align-items:start;
}
.site-footer a{color:var(--text)}
.site-footer ul{list-style:none; margin:0; padding:0}
.site-footer li{margin:6px 0}
copyright{opacity:.7}
.site-footer .copyright{margin:0; padding:16px 20px; border-top:1px solid rgba(255,255,255,.06); text-align:center; color:var(--text-dim)}

/* Responsive */
@media (max-width: 900px){
  .panel-grid{grid-template-columns:1fr}
  .site-header{justify-content:space-between}
  .nav-toggle{display:block}
  .site-nav{
    position:absolute; right:12px; top:58px; background:rgba(10,12,18,.95); border:1px solid rgba(255,255,255,.1);
    padding:10px; border-radius:14px; display:none; flex-direction:column
  }
  .site-nav.open{display:flex}
  .site-nav a{margin:4px 0}
}


/* Utility */
.text-dim{color:var(--text-dim)}

/* Projects */
.projects-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; margin-top:24px;
}
.project-card{background:var(--card); border-radius:16px; overflow:hidden; transition:transform .3s ease}
.project-thumb img{width:100%; height:220px; object-fit:cover; display:block}
.project-meta{padding:14px}
.project-card:hover{transform:translateY(-4px)}

@media (max-width: 1000px){
  .projects-grid{grid-template-columns:repeat(2, 1fr)}
}
@media (max-width: 640px){
  .projects-grid{grid-template-columns:1fr}
}

/* Panels specs */
.spec-card{
  display:grid; grid-template-columns:1.3fr 1fr; gap:20px; background:var(--card);
  border-radius:18px; overflow:hidden; margin:22px 0; transform:scale(.98); opacity:.85; transition:transform .6s ease, opacity .6s ease;
}
.spec-card img{width:100%; height:360px; object-fit:cover; display:block}
.spec-card .spec-body{padding:18px}
.spec-card .btn{display:inline-block; margin-top:12px; padding:10px 14px; background:var(--brand); color:white; border-radius:12px; text-decoration:none}
.spec-card.in-view{transform:scale(1); opacity:1}
@media (max-width: 900px){
  .spec-card{grid-template-columns:1fr}
  .spec-card img{height:260px}
}

/* Contact */
.contact-grid{display:grid; grid-template-columns:1.2fr 1fr; gap:24px}
.contact-form{display:grid; gap:12px; background:var(--card); padding:18px; border-radius:16px}
.contact-form label{display:grid; gap:6px}
.contact-form input,.contact-form textarea{
  background:#0f1320; color:var(--text); border:1px solid rgba(255,255,255,.08);
  border-radius:12px; padding:10px 12px; outline:none
}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--brand)}
.contact-info{background:var(--muted); padding:18px; border-radius:16px}
.map-embed{margin-top:12px; border-radius:12px; overflow:hidden}
.btn{cursor:pointer; border:0}
@media (max-width: 900px){
  .contact-grid{grid-template-columns:1fr}
}


/* Dropdown menu (Panouri LED) */
.site-nav { display:flex; align-items:center; gap:0 }
.site-nav .dropdown { position:relative; }
.site-nav .drop-link { padding:8px 12px; display:inline-block; }
.site-nav .subnav { position:absolute; top:100%; right:0; display:none; flex-direction:column; gap:4px; background:rgba(10,12,18,.98); border:1px solid rgba(255,255,255,.1); padding:10px; border-radius:12px; min-width:200px; z-index:60; }
.site-nav .dropdown:hover .subnav { display:flex; }

/* Mobile submenu */
@media (max-width:900px){
  .site-nav .dropdown { align-self:stretch; }
  .site-nav .subnav { position:absolute; top:100%; right:0; display:none; flex-direction:column; gap:4px; background:rgba(10,12,18,.98); border:1px solid rgba(255,255,255,.1); padding:10px; border-radius:12px; min-width:200px; z-index:60; }
  .site-nav .subnav.open { display:flex; }
}

/* Clickable hero overlay link */
.hero .hero-link{ position:absolute; inset:0; z-index:3; }