/* ============================================================
   E-Calor — stile sito (fuoco + ghiaccio)
   Palette: arancio/rosso caldo (riscaldamento) + blu ghiaccio (clima)
   ============================================================ */

:root{
  /* Fuoco */
  --fire-1:#FFA01E;
  --fire-2:#F2600C;
  --fire-3:#E5340B;
  --fire-grad:linear-gradient(135deg,#FFA01E 0%,#F2600C 45%,#E5340B 100%);
  /* Ghiaccio */
  --ice-1:#5CC8F5;
  --ice-2:#1E9BE0;
  --ice-3:#1267C2;
  --ice-grad:linear-gradient(135deg,#5CC8F5 0%,#1E9BE0 55%,#1267C2 100%);
  /* Neutri */
  --ink:#161A21;
  --ink-soft:#4A5260;
  --line:#E6EAF0;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FB;
  --bg-dark:#11161F;
  --white:#fff;
  /* Misure */
  --maxw:1160px;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(20,30,50,.08);
  --shadow-lg:0 24px 60px rgba(20,30,50,.16);
  --font-head:'Poppins',system-ui,Segoe UI,Roboto,Arial,sans-serif;
  --font-body:'Inter',system-ui,Segoe UI,Roboto,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.15;margin:0 0 .5em;font-weight:700}
p{margin:0 0 1em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.container-narrow{max-width:820px}
.grad{background:var(--fire-grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Bottoni ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-family:var(--font-head);font-weight:600;font-size:1rem;
  padding:.8em 1.4em;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .2s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn-lg{padding:1em 1.7em;font-size:1.05rem}
.btn-block{width:100%}
.btn-fire{background:var(--fire-grad);color:#fff;box-shadow:0 8px 20px rgba(229,52,11,.28)}
.btn-ice{background:var(--ice-grad);color:#fff;box-shadow:0 8px 20px rgba(18,103,194,.25)}
.btn-outline{background:transparent;border-color:var(--ice-2);color:var(--ice-3)}
.btn-outline:hover{background:var(--ice-2);color:#fff}
.btn-phone{background:var(--fire-grad);color:#fff;padding:.6em 1.1em;font-size:.95rem}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(150%) blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:800;font-size:1.35rem}
.brand-mark{display:inline-flex;width:32px;height:32px}
.brand-text{letter-spacing:-.5px}
.brand-text::first-letter{color:var(--fire-3)}
.main-nav{display:flex;gap:26px;margin-left:auto}
.main-nav a{font-weight:500;color:var(--ink-soft);font-size:.98rem;position:relative}
.main-nav a:hover{color:var(--ink)}
.main-nav a::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--fire-grad);transition:width .2s}
.main-nav a:hover::after{width:100%}
.header-cta{margin-left:8px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:3px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;
  background:
    radial-gradient(1100px 500px at 88% -10%, rgba(92,200,245,.22), transparent 60%),
    radial-gradient(900px 480px at 0% 0%, rgba(242,96,12,.16), transparent 55%),
    var(--bg-alt);
  padding:64px 0 56px}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.eyebrow{font-family:var(--font-head);font-weight:600;text-transform:uppercase;
  letter-spacing:1.5px;font-size:.78rem;color:var(--fire-3);margin:0 0 .8em}
.hero h1{font-size:clamp(2.1rem,4.6vw,3.4rem);font-weight:800;margin-bottom:.4em}
.lead{font-size:1.18rem;color:var(--ink-soft);max-width:34ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 18px}
.hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:18px;padding:0;margin:0;font-weight:600;color:var(--ink)}
.hero-points li{font-size:.95rem}

.hero-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);
  padding:28px;border:1px solid var(--line)}
.hero-card h2{font-size:1.4rem;margin-bottom:.2em}
.hero-card>p{color:var(--ink-soft);margin-bottom:1em}

/* ---------- Form ---------- */
.quote-form{display:flex;flex-direction:column;gap:12px}
.quote-form input,.quote-form select,.quote-form textarea{
  width:100%;padding:.85em 1em;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  font-family:var(--font-body);font-size:1rem;background:#fff;color:var(--ink);transition:border .2s}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{
  outline:none;border-color:var(--fire-2);box-shadow:0 0 0 3px rgba(242,96,12,.12)}
.quote-form small{color:var(--ink-soft);text-align:center}
.quote-form small a{color:var(--fire-3);font-weight:600}

/* ---------- Trust bar ---------- */
.trustbar{background:var(--bg-dark);color:#fff}
.trust-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:22px 20px}
.trust-item{display:flex;flex-direction:column;text-align:center}
.trust-item strong{font-family:var(--font-head);font-size:1.15rem}
.trust-item span{color:#aebbcd;font-size:.9rem}

/* ---------- Sezioni ---------- */
.section{padding:74px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:680px;margin:0 auto 44px}
.section-head h2{font-size:clamp(1.7rem,3.2vw,2.4rem)}
.section-sub{color:var(--ink-soft);font-size:1.08rem}

/* ---------- Cards servizi ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;
  box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-ico{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:1.6rem;margin-bottom:14px;background:var(--bg-alt)}
.card-ico.fire{background:linear-gradient(135deg,rgba(255,160,30,.18),rgba(229,52,11,.14))}
.card-ico.ice{background:linear-gradient(135deg,rgba(92,200,245,.2),rgba(18,103,194,.12))}
.card h3{font-size:1.12rem}
.card p{color:var(--ink-soft);font-size:.96rem;margin:0}
.card-link{display:inline-block;margin-top:12px;color:var(--fire-3);font-weight:600}
.card-feature{grid-column:span 2;background:linear-gradient(135deg,#fff, #fff6f0);border-color:#ffd9c2}
.card-niche{background:linear-gradient(135deg,#fff,#f3faf2);border-color:#cfe9cf}

/* ---------- Split (casa) ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.check-list{list-style:none;padding:0;margin:0 0 24px}
.check-list li{position:relative;padding-left:32px;margin-bottom:12px;color:var(--ink-soft)}
.check-list li::before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;
  background:var(--fire-grad);color:#fff;border-radius:50%;display:grid;place-items:center;font-size:.8rem;font-weight:700}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.split-visual{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.stat-block{display:flex;flex-direction:column;gap:18px}
.stat{display:flex;flex-direction:column;border-left:4px solid;border-image:var(--fire-grad) 1;padding-left:16px}
.stat strong{font-family:var(--font-head);font-size:1.7rem;color:var(--ink)}
.stat span{color:var(--ink-soft)}
.fineprint{font-size:.8rem;color:#90a;color:var(--ink-soft);margin-top:16px;opacity:.8}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{text-align:center;padding:10px}
.step-n{width:48px;height:48px;border-radius:50%;background:var(--ice-grad);color:#fff;
  display:grid;place-items:center;font-family:var(--font-head);font-weight:700;font-size:1.3rem;margin:0 auto 14px}
.step h3{font-size:1.1rem}
.step p{color:var(--ink-soft);font-size:.95rem;margin:0}

/* ---------- Zona servita ---------- */
.towns{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.towns li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:.5em 1.1em;
  font-weight:500;font-size:.95rem;color:var(--ink-soft);box-shadow:0 2px 6px rgba(20,30,50,.04)}
.towns li:hover{border-color:var(--ice-2);color:var(--ice-3)}

/* ---------- Perché noi ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.why h3{font-size:1.12rem}
.why p{color:var(--ink-soft);font-size:.96rem;margin:0}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:4px 20px;box-shadow:0 2px 8px rgba(20,30,50,.04)}
.faq summary{font-family:var(--font-head);font-weight:600;cursor:pointer;padding:16px 0;list-style:none;
  position:relative;padding-right:34px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font-size:1.5rem;color:var(--fire-3);transition:transform .2s}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--ink-soft);margin:0 0 16px}

/* ---------- CTA finale ---------- */
.cta-section{background:
  radial-gradient(800px 400px at 90% 0%, rgba(92,200,245,.18), transparent 60%),
  var(--bg-alt)}
.cta-box{display:grid;grid-template-columns:1fr 1fr;gap:40px;background:var(--bg-dark);color:#fff;
  border-radius:24px;padding:44px;box-shadow:var(--shadow-lg)}
.cta-box h2{color:#fff}
.cta-box-text p{color:#c2ccdb}
.contact-list{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-direction:column;gap:12px}
.contact-list a{color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.3)}
.contact-list em{color:#8ea0b8;font-style:normal;font-size:.85rem}
.quote-form-dark input,.quote-form-dark textarea{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.18);color:#fff}
.quote-form-dark input::placeholder,.quote-form-dark textarea::placeholder{color:#9fb0c6}

/* ---------- Footer ---------- */
.site-footer{background:#0C1118;color:#aeb9c8;padding:54px 0 0}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;padding-bottom:36px}
.footer-brand .brand-text{font-family:var(--font-head);font-weight:800;font-size:1.4rem;color:#fff}
.footer-brand .brand-text::first-letter{color:var(--fire-2)}
.footer-brand p{margin-top:10px;max-width:42ch;font-size:.95rem}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:14px}
.footer-col a,.footer-col span{display:block;color:#aeb9c8;font-size:.95rem;margin-bottom:9px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:.85rem;color:#7e8aa0}

/* ---------- Azioni flottanti ---------- */
.floating-actions{position:fixed;right:16px;bottom:16px;z-index:60;display:none;flex-direction:column;gap:12px}
.fab{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:var(--shadow-lg)}
.fab-wa{background:#25D366}
.fab-call{background:var(--fire-grad)}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-card{order:-1}
  .cards{grid-template-columns:repeat(2,1fr)}
  .card-feature{grid-column:span 2}
  .split{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .cta-box{grid-template-columns:1fr;padding:32px}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .main-nav{position:fixed;inset:70px 0 auto 0;background:#fff;flex-direction:column;gap:0;
    padding:8px 0;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    transform:translateY(-130%);transition:transform .3s;z-index:40}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:14px 24px}
  .main-nav a::after{display:none}
  .nav-toggle{display:flex}
  .header-cta span{display:none}
  .header-cta{padding:.6em .8em}
  .trust-inner{grid-template-columns:repeat(2,1fr);gap:20px 12px}
  .cards{grid-template-columns:1fr}
  .card-feature{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .floating-actions{display:flex}
  .section{padding:54px 0}
  .hero{padding:40px 0}
  body{padding-bottom:84px}
}