/* ============================================================
   ENERGEIA — energeia-italia.it
   ============================================================ */
:root{
  --teal:#0E4A4E;
  --teal-2:#16665F;
  --teal-3:#2A8C82;
  --mint:#EDF5F3;
  --mint-2:#DCEBE7;
  --orange:#E8752A;
  --orange-2:#D5651D;
  --ink:#15272B;
  --gray:#5B6B6E;
  --line:#DFE8E6;
  --white:#FFFFFF;
  --dark:#0B2225;
  --radius:16px;
  --shadow:0 10px 30px rgba(14,74,78,.10);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.6;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-2);text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- top bar ---------- */
.topbar{background:var(--teal);color:#fff;font-size:13.5px}
.topbar-in{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#E8F2F0;margin-right:22px}
.topbar a:hover{color:#fff}
.lang-switch a{margin:0 0 0 10px;padding:3px 9px;border-radius:20px;font-weight:600;letter-spacing:.4px}
.lang-switch a.on{background:#fff;color:var(--teal)}
.lang-switch a:not(.on):hover{background:rgba(255,255,255,.15)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;background:#fff;z-index:100;border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(14,74,78,.05)}
.header-in{display:flex;align-items:center;gap:34px;height:76px}
.logo img{height:46px;width:auto}
.main-nav{display:flex;gap:26px;align-items:center;flex:1}
.main-nav a{color:var(--ink);font-weight:600;font-size:15px;padding:8px 0;border-bottom:2.5px solid transparent}
.main-nav a:hover{color:var(--teal-2)}
.main-nav a.active{color:var(--teal-2);border-bottom-color:var(--orange)}
.nav-drop{position:relative;display:flex;align-items:center;gap:4px}
.nav-drop .caret{font-size:11px;color:var(--gray);cursor:default}
.drop-menu{position:absolute;top:100%;left:-14px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;min-width:210px;display:none;flex-direction:column}
.drop-menu a{padding:9px 14px;border-radius:8px;border-bottom:none;font-weight:500}
.drop-menu a:hover{background:var(--mint)}
.nav-drop:hover .drop-menu{display:flex}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;font-size:20px;padding:4px 12px;cursor:pointer;color:var(--teal)}

/* ---------- buttons ---------- */
.btn{display:inline-block;padding:13px 26px;border-radius:30px;font-weight:700;font-size:15px;border:2px solid transparent;cursor:pointer;transition:.18s;text-align:center}
.btn-teal{background:var(--teal-2);color:#fff}
.btn-teal:hover{background:var(--teal)}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-2)}
.btn-outline{border-color:var(--teal-2);color:var(--teal-2);background:transparent}
.btn-outline:hover{background:var(--teal-2);color:#fff}
.btn-ghost-w{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-ghost-w:hover{background:#fff;color:var(--teal)}
.btn-wa{background:#25D366;color:#fff;margin-top:10px;padding:10px 20px;font-size:14px}
.btn-wa:hover{background:#1EB558}
.header-cta{padding:11px 22px;white-space:nowrap}

/* ---------- hero ---------- */
.hero{background:linear-gradient(160deg,var(--mint) 0%,#F7FBFA 55%,var(--mint-2) 100%);overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding:64px 24px 58px}
.kicker{color:var(--orange);font-weight:700;text-transform:uppercase;letter-spacing:1.6px;font-size:13px;margin-bottom:14px}
.hero h1{font-size:46px;line-height:1.12;font-weight:800;color:var(--teal);letter-spacing:-.5px}
.hero .sub{margin:20px 0 30px;font-size:18px;color:var(--gray);max-width:540px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-imgs{display:flex;gap:40px;justify-content:center;align-items:flex-end}
.hero-prod{background:transparent;text-align:center;transition:transform .25s}
.hero-prod:hover{transform:translateY(-6px)}
.hero-prod img{height:340px;width:auto;margin:0 auto;object-fit:contain;mix-blend-mode:multiply}
.hero-prod figcaption{margin-top:18px;font-weight:600;color:var(--teal);font-size:14px;opacity:.85}

/* ---------- strip ---------- */
.strip{background:var(--teal);color:#fff}
.strip.empty{background:linear-gradient(90deg,var(--teal),var(--teal-3) 55%,var(--teal-2));height:46px}
.strip-in{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:26px 24px}
.stat{text-align:center}
.stat b{display:block;font-size:27px;font-weight:800;letter-spacing:-.4px}
.stat span{font-size:13.5px;color:#BFDAD5}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section.alt{background:var(--mint)}
.sec-h2{font-size:34px;font-weight:800;color:var(--teal);text-align:center;letter-spacing:-.4px}
.sec-sub{text-align:center;color:var(--gray);max-width:640px;margin:12px auto 0;font-size:17px}

/* ---------- category cards ---------- */
.cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:44px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.22s;display:flex;flex-direction:column}
.cat-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(14,74,78,.16)}
.cat-img{background:#fff;display:flex;justify-content:center;align-items:center;height:300px;padding:26px}
.cat-img img{max-height:260px;width:auto;object-fit:contain;mix-blend-mode:multiply}
.cat-body{padding:26px 28px 30px}
.cat-body h3{color:var(--teal);font-size:22px;margin-bottom:10px}
.cat-body p{color:var(--gray);font-size:15.5px}
.link-arrow{display:inline-block;margin-top:16px;color:var(--orange);font-weight:700}

/* ---------- dark tech ---------- */
.dark-tech{background:linear-gradient(150deg,var(--dark),var(--teal));color:#fff;padding:78px 0}
.dark-in{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.dark-tech h2,.dark-h2{font-size:32px;font-weight:800;letter-spacing:-.4px}
.dark-h2{text-align:center;margin-bottom:40px}
.dark-tech p{color:#C9DEDA;margin:16px 0 26px;font-size:16.5px}
.dark-imgs{display:flex;gap:22px;justify-content:center;align-items:center}
.dark-imgs img{max-height:290px;width:auto;border-radius:12px;background:#000;padding:8px}
.dark-cols{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.dark-gallery{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.dark-gallery figure{background:#000;border-radius:12px;padding:12px;text-align:center}
.dark-gallery figure.on-light{background:#fff}
.dark-gallery img{max-height:230px;width:auto;margin:0 auto;object-fit:contain}
.dark-gallery figcaption{font-size:12.5px;color:#9EC3BD;margin-top:8px}
.dark-gallery figure.on-light figcaption{color:var(--gray)}
.gat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:22px 24px;margin-top:10px}
.gat h3{color:#FFD9BC;font-size:19px}
.gat p{margin:8px 0 0;font-size:15px}
.h2ready{color:#8FE3C8;font-weight:600}

/* ---------- teaser ---------- */
.teaser-in{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.teaser-img img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;object-fit:cover}
.teaser-txt h2{font-size:32px;color:var(--teal);font-weight:800;letter-spacing:-.4px}
.teaser-txt p{color:var(--gray);margin:16px 0 26px;font-size:17px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,var(--teal-2),var(--teal));color:#fff;padding:64px 0}
.cta-in{text-align:center}
.cta-band h2{font-size:32px;font-weight:800}
.cta-band p{color:#CDE4E0;margin:12px auto 28px;max-width:620px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ---------- breadcrumbs / product hero ---------- */
.crumbs{padding:18px 24px 0;font-size:13.5px;color:var(--gray)}
.crumbs span{margin:0 4px}
.prod-hero{background:linear-gradient(160deg,#F7FBFA,var(--mint));padding:34px 0 64px}
.prod-hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.prod-hero h1{font-size:42px;color:var(--teal);font-weight:800;letter-spacing:-.5px;line-height:1.12}
.prod-hero .sub{color:var(--gray);font-size:17px;margin:18px 0}
.models-note{font-weight:700;color:var(--teal-2);margin-bottom:22px}
.prod-img{display:flex;justify-content:center;align-items:flex-end;gap:34px}
.prod-img img{max-height:430px;width:auto;object-fit:contain;mix-blend-mode:multiply}
.prod-img.duo img{max-height:390px}
.about-hero{padding:44px 0 56px}
.mini-stats{display:flex;gap:34px;margin:8px 0 22px}
.mini-stats b{font-size:24px;color:var(--teal);display:block;font-weight:800}
.mini-stats span{font-size:13px;color:var(--gray)}

/* ---------- features ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px;margin-top:44px}
.feat{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal-3);border-radius:12px;padding:24px 26px;box-shadow:0 4px 16px rgba(14,74,78,.05)}
.feat h3{color:var(--teal);font-size:17.5px;margin-bottom:8px}
.feat p{color:var(--gray);font-size:14.5px}

/* ---------- components ---------- */
.comp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;margin-top:44px}
.comp{background:#fff;border-radius:12px;border:1px solid var(--line);padding:16px;text-align:center}
.comp-img{height:150px;display:flex;align-items:center;justify-content:center;background:#FBFDFC;border-radius:8px}
.comp-img img{max-height:135px;max-width:92%;width:auto;object-fit:contain}
.comp figcaption{margin-top:12px;font-size:14px;font-weight:600;color:var(--ink)}

/* ---------- electric panel ---------- */
.panel-cols{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.panel-cols p{color:var(--gray);margin:14px 0 22px}
.panel-img{border-radius:12px;box-shadow:var(--shadow);background:#111;padding:10px}
.modes-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.mode{background:#fff;border-radius:12px;border:1px solid var(--line);padding:20px 22px}
.mode h4{color:var(--teal-2);font-size:16px;margin-bottom:6px}
.mode p{color:var(--gray);font-size:14px;margin:0}
.floor-note{margin-top:26px;background:var(--mint);border-left:4px solid var(--orange);padding:14px 18px;border-radius:8px;font-weight:600;color:var(--teal)}

/* ---------- spec tables ---------- */
.table-wrap{overflow-x:auto;margin-top:36px;border:1px solid var(--line);border-radius:12px;box-shadow:0 4px 16px rgba(14,74,78,.05)}
table.specs{width:100%;border-collapse:collapse;font-size:14px;min-width:760px;background:#fff}
.specs thead th{background:var(--teal);color:#fff;padding:12px 14px;text-align:center;font-weight:700;white-space:nowrap}
.specs thead th.pname{text-align:left}
.specs td{padding:10px 14px;border-top:1px solid var(--line);text-align:center;color:var(--ink)}
.specs td.pname{text-align:left;font-weight:500;color:var(--ink);min-width:260px}
.specs td.unit{color:var(--gray);font-size:13px;white-space:nowrap}
.specs td.span{background:#F6FAF9;font-weight:500}
.specs tbody tr:nth-child(even) td{background:#FBFDFC}
.specs tbody tr:hover td{background:var(--mint)}
.spec-note{margin-top:14px;font-size:13px;color:var(--gray);text-align:center}

/* ---------- about ---------- */
.factory{padding:0 0 8px}
.factory-fig img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);object-fit:cover;max-height:520px}
.factory-fig figcaption{text-align:center;color:var(--gray);font-size:14px;margin-top:12px}
.about-blocks{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.ab{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;box-shadow:0 4px 16px rgba(14,74,78,.05)}
.ab-n{font-size:14px;font-weight:800;color:var(--orange);letter-spacing:2px}
.ab h3{color:var(--teal);font-size:20px;margin:10px 0 12px}
.ab p{color:var(--gray);font-size:15px}
.cert{text-align:center}
.cert-badges{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.cert-badges span{border:2px solid var(--teal-2);color:var(--teal-2);font-weight:800;border-radius:40px;padding:10px 26px;font-size:16px}

/* ---------- contacts ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:start}
.contact-cards{display:flex;flex-direction:column;gap:20px}
.ccard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:0 4px 16px rgba(14,74,78,.05)}
.ccard h3{color:var(--teal);font-size:17px;margin-bottom:10px}
.big-link{font-size:19px;font-weight:700;color:var(--teal-2);word-break:break-all}
.muted{color:var(--gray);font-size:14px;margin-top:6px}
.small{font-size:12.5px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 34px;box-shadow:var(--shadow)}
.form-card h2{color:var(--teal);font-size:24px;margin-bottom:22px}
.form-card label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:16px}
.form-card input,.form-card select,.form-card textarea{width:100%;margin-top:6px;padding:11px 14px;border:1.5px solid var(--line);border-radius:9px;font-size:15px;font-family:inherit;background:#FBFDFC}
.form-card input:focus,.form-card select:focus,.form-card textarea:focus{outline:none;border-color:var(--teal-3);background:#fff}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-card button{width:100%;margin-top:6px}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#B9CFCB;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr 1fr;gap:30px;padding:56px 24px 36px}
.foot-brand p{font-size:14px;margin-top:12px}
.foot-logo{font-size:26px;font-weight:800;color:#fff;letter-spacing:1px}
.foot-domain{color:#7FB5AD;font-weight:600}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.4px}
.foot-col a{display:block;color:#B9CFCB;font-size:14px;margin-bottom:9px}
.foot-col a:hover{color:#fff}
.foot-langs a{display:inline}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 24px;font-size:13px;color:#8AA6A1}

/* ---------- responsive ---------- */
@media(max-width:1020px){
  .hero-in,.prod-hero-in,.dark-in,.dark-cols,.teaser-in,.panel-cols{grid-template-columns:1fr}
  .hero h1{font-size:36px}
  .prod-hero h1{font-size:34px}
  .hero-imgs{margin-top:14px}
  .hero-prod img{height:250px}
  .cat-grid{grid-template-columns:1fr}
  .strip-in{grid-template-columns:repeat(2,1fr)}
  .about-blocks{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .main-nav{position:fixed;top:114px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:18px 24px;gap:14px;border-bottom:1px solid var(--line);display:none;z-index:99}
  .main-nav.open{display:flex}
  .nav-drop{flex-direction:column;align-items:flex-start}
  .drop-menu{position:static;display:flex;box-shadow:none;border:none;padding-left:16px}
  .nav-toggle{display:block;margin-left:auto}
  .header-cta{display:none}
  .header-in{height:66px;gap:16px}
  .logo img{height:38px}
}
@media(max-width:560px){
  .hero-imgs{flex-direction:column;align-items:center}
  .frow{grid-template-columns:1fr}
  .strip-in{grid-template-columns:1fr 1fr}
  .topbar-in{flex-direction:column;height:auto;padding:6px 0;gap:2px}
  .prod-img{flex-direction:column;align-items:center}
  .modes-grid{grid-template-columns:1fr}
  .dark-gallery{grid-template-columns:1fr}
}