:root{
  --bg: #071627;          /* Navy/Tech */
  --card-bg: #0f2633;
  --muted: #98a3b3;
  --accent: #0ea5ff;      /* Blu elettrico */
  --accent-2: #6a00ff;    /* Viola profondo */
  --medical: #ffffff;     /* Bianco medico */
  --silver: #c7cbd1;      /* Argento istituzionale */
  --success: #00b37a;
  --surface: #0b1620;
  --radius: 12px;
  font-family: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color-scheme: dark;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;background:linear-gradient(180deg,#021322 0%, #041733 60%);color:#e9f2fb;-webkit-font-smoothing:antialiased}
.container{max-width:1150px;margin:0 auto;padding:28px}

/* HEADER E NAVIGAZIONE */
.header-row,.footer-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.site-header{position:sticky;top:0;backdrop-filter: blur(6px);background:rgba(2,6,12,0.4);border-bottom:1px solid rgba(255,255,255,0.03);z-index:60;padding:8px 0}
.brand{font-weight:700;color:var(--medical);text-decoration:none;font-size:1.15rem;letter-spacing:0.4px}
.brand .dot{color:var(--accent);margin-left:6px}

.header-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-toggle{display:none;background:none;border:0;color:var(--accent);font-weight:700;padding:8px}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:20px}
.main-nav a{color:var(--silver);text-decoration:none;font-weight:600}
.main-nav a:hover,.main-nav a[aria-current="page"]{color:var(--accent)}

/* SELETTORE LINGUA (DROPDOWN) */
.lang-selector {
  position: relative;
  display: inline-block;
  padding-bottom: 10px;
  margin-bottom: -10px;
}

.dropbtn {
  background: transparent;
  color: var(--silver);
  border: 1px solid var(--accent);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.dropbtn:hover {
  background: rgba(14, 165, 255, 0.05);
  box-shadow: 0 0 12px rgba(14, 165, 255, 0.2);
}

.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  background: var(--card-bg);
  min-width: 160px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 8px 0;
  margin: 0;
  z-index: 1000;
  list-style: none;
  flex-direction: column;
}

.dropdown-content::before {
  content: "";
  position: absolute;
  top: -12px;
  left: 0;
  width: 100%;
  height: 12px;
  background: transparent;
}

.dropdown-content li {
  display: block;
  width: 100%;
  margin: 0;
}

.dropdown-content li a {
  color: var(--medical);
  padding: 12px 20px;
  text-decoration: none;
  display: block;
  font-size: 0.9rem;
  text-align: left;
  transition: background 0.2s;
}

.dropdown-content li a:hover {
  background: rgba(14, 165, 255, 0.1);
  color: var(--accent);
}

.lang-selector:hover .dropdown-content {
  display: flex;
}

/* ELEMENTI PAGINA (HERO, CARDS, ECC) */
.hero{position:relative;min-height:56vh;display:flex;align-items:flex-end;overflow:hidden;border-bottom:1px solid rgba(255,255,255,0.03)}
.hero-media{width:100%;height:100%;object-fit:cover;display:block;top:-92px;position:relative}
.hero-overlay{position:absolute;inset:0;pointer-events:none;display:flex;align-items:flex-start;justify-content:center;padding-top:40px}
.hero-content{position:relative;padding:48px 24px 60px;z-index:3;max-width:980px}
.hero h1{font-size:clamp(1.6rem,3.2vw,2.8rem);margin:0 0 6px}
.subtitle{display:block;font-weight:400;color:var(--muted);font-size:0.95rem;margin-top:8px}
.lead{color:var(--muted);margin:10px 0 18px}

.hero-actions{display:flex;gap:12px;margin-bottom:18px}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:700;border:1px solid transparent}
.btn.primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#021022;box-shadow:0 6px 22px rgba(10,90,170,0.12)}
.btn.ghost{background:transparent;color:var(--medical);border:1px solid rgba(255,255,255,0.06)}

.impact-box{margin-top:24px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));padding:20px;border-radius:12px;border:1px solid rgba(255,255,255,0.04);width:420px;color:var(--medical);max-width:100%;}
.impact-stats{display:flex;gap:20px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;}
.impact-stats div { flex: 1; min-width: 100px; }
.impact-stats strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
.impact-stats .muted { display: block; font-size: 0.85rem; line-height: 1.2; }

/* NUOVO: CENTRATURA RENDERING ELICOTTERO (HUB HEMS) */
.render-hero {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 30px 0;
  text-align: center;
}
.render-hero img {
  width: 100%;
  max-width: 1150px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 14px 40px rgba(2,12,30,0.65);
  display: block;
}
.caption { margin-top: 15px; color: var(--muted); font-size: 0.9rem; font-style: italic; }

.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));padding:22px;border-radius:14px;border:1px solid rgba(255,255,255,0.03)}

.bg-contrast{background:linear-gradient(180deg, rgba(6,10,16,0.35), rgba(3,6,12,0.35))}
.partner-logos img{height:48px;filter:grayscale(100%);opacity:0.8;padding:6px}

/* ANIMAZIONI E MODAL */
.reveal{opacity:0;transform:translateY(12px);transition:all .6s ease}
.reveal.visible{opacity:1;transform:none}

.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(2,6,12,0.6);z-index:120}
.modal.open{display:flex}
.modal-panel{background:linear-gradient(180deg,#071e2b,#061522);padding:22px;border-radius:12px;max-width:720px;width:92%}

/* RESPONSIVE */
@media (max-width:1000px){
  .grid-2,.grid-3{grid-template-columns:1fr}
  .header-right{gap: 12px;}
  .nav-toggle{display:block}
  .main-nav{display:none}
  .main-nav.open{display:block;position:absolute;top:64px;right:20px;background:rgba(2,6,12,0.95);padding:12px;border-radius:10px}
  .main-nav ul{flex-direction: column; gap: 10px;}
}