/* soluzioni.tech — tema scuro, accento rosso carminio */
:root{
  --bg:#121316; --bg2:#1a1b1f; --bg3:#222429; --line:#2e3036;
  --fg:#eceef1; --muted:#9aa0aa;
  --accent:#d31e3f; --accent-hi:#ec3556; --accent-dk:#960018;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--accent-hi);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .6em;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:700}
h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.narrow{max-width:780px}
.muted{color:var(--muted)}
.kicker{color:var(--accent-hi);text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;margin-bottom:.8em}
.lead{font-size:1.15rem;color:#c5c9d0;max-width:720px}
.ico{display:block}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(18,19,22,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);font-weight:800;font-size:1.15rem;letter-spacing:.02em;text-transform:uppercase}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;color:var(--accent-hi)}
.main-nav a{color:#c5c9d0;margin-left:26px;font-weight:600;font-size:.95rem;padding:6px 0;border-bottom:2px solid transparent}
.main-nav a:hover,.main-nav a.active{color:#fff;border-color:var(--accent);text-decoration:none}
.nav-toggle{display:none;background:none;border:1px solid var(--line);width:42px;height:38px;cursor:pointer;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:10px;right:10px;height:2px;background:var(--fg);content:""}
.nav-toggle span{top:17px}.nav-toggle span::before{left:0;right:0;top:-6px}.nav-toggle span::after{left:0;right:0;top:6px}

/* buttons */
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;padding:13px 26px;border:1px solid var(--accent);cursor:pointer;transition:.15s}
.btn:hover{background:var(--accent-hi);border-color:var(--accent-hi);text-decoration:none}
.btn.ghost{background:transparent;border-color:#555a63;color:var(--fg)}
.btn.ghost:hover{border-color:var(--accent-hi);color:#fff}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}

/* hero */
.hero{position:relative;overflow:hidden;padding:90px 0 80px;background:
  radial-gradient(900px 420px at 85% 10%,rgba(211,30,63,.22),transparent 60%),var(--bg)}
.hero-in>div{max-width:760px}
.page-hero{padding:64px 0 44px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--bg2),var(--bg))}
.page-hero h1{font-size:clamp(1.8rem,4vw,2.8rem)}

/* stats */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2)}
.stats .grid{padding:28px 20px}
.stats strong{display:block;font-size:2rem;color:var(--accent-hi);line-height:1.1}
.stats span{color:var(--muted);font-size:.92rem}

/* sections / grid */
.section{padding:72px 0}
.section.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.center-h{text-align:center;margin-bottom:1em}
.section h2{margin-top:1.4em}.section h2:first-child{margin-top:0}

.card{background:var(--bg2);border:1px solid var(--line);border-top:3px solid var(--bg3);padding:26px;color:var(--fg);display:block;transition:.15s}
.section.alt .card{background:var(--bg)}
.card p{color:#b7bcc5;margin-bottom:0;font-size:.95rem}
.card.link:hover{border-top-color:var(--accent);transform:translateY(-3px);text-decoration:none}
.more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--accent-hi);font-weight:700;font-size:.9rem}
.more .ico{width:18px;height:18px}
.ico-box{display:inline-flex;width:46px;height:46px;align-items:center;justify-content:center;background:rgba(211,30,63,.14);color:var(--accent-hi);margin-bottom:16px}
.cat{margin-bottom:56px;scroll-margin-top:90px}
.cat-head{display:flex;gap:16px;align-items:center;margin-bottom:22px}
.cat-head .ico-box{margin:0}.cat-head h2{margin:0}.cat-head p{margin:0;color:var(--muted)}

/* liste */
.checks{list-style:none;padding:0;margin:0 0 1.2em}
.checks li{position:relative;padding:9px 0 9px 28px;border-bottom:1px solid var(--line)}
.checks li::before{content:"";position:absolute;left:2px;top:17px;width:10px;height:10px;background:var(--accent)}
.steps{list-style:none;counter-reset:s;padding:0;margin:0 0 1.5em}
.steps li{counter-increment:s;display:grid;grid-template-columns:44px 1fr;gap:2px 14px;padding:14px 0;border-bottom:1px solid var(--line)}
.steps li::before{content:counter(s);grid-row:span 2;width:44px;height:44px;background:var(--accent);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.steps span{color:#b7bcc5}
.note{border-left:3px solid var(--accent);background:var(--bg2);padding:16px 20px;margin-top:28px;color:#c5c9d0}

/* cta */
.cta{background:linear-gradient(90deg,var(--accent-dk),var(--accent));padding:48px 0}
.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta h2{margin:0 0 6px}.cta p{margin:0;opacity:.92}
.cta .btn{background:#fff;color:var(--accent-dk);border-color:#fff}
.cta .btn:hover{background:#111;color:#fff;border-color:#111}

/* footer */
.site-footer{background:#0d0e10;border-top:1px solid var(--line);padding:48px 0 0;color:#b7bcc5}
.fgrid{display:grid;grid-template-columns:1.2fr 1fr 1.4fr;gap:40px}
.site-footer h4{color:#fff;text-transform:uppercase;letter-spacing:.1em;font-size:.8rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#d6d9df}
.fsmall{font-size:.9rem}
.legal{margin-top:36px;padding-top:18px;padding-bottom:26px;border-top:1px solid var(--line);font-size:.8rem;color:var(--muted)}

@media (max-width:860px){
  .g3{grid-template-columns:1fr 1fr}
  .split,.fgrid{grid-template-columns:1fr}
  .hero{padding:60px 0}
}
@media (max-width:620px){
  .g3,.g2{grid-template-columns:1fr}
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 20px 16px}
  .main-nav.open{display:block}
  .main-nav a{display:block;margin:0;padding:12px 0;border-bottom:1px solid var(--line)}
  .section{padding:52px 0}
}

/* immagini hero generate con IA, con fallback per le pagine interne */
.hero{background:
  linear-gradient(90deg,rgba(18,19,22,.82) 0%,rgba(18,19,22,.45) 42%,rgba(18,19,22,0) 75%),
  linear-gradient(0deg,var(--bg) 0%,transparent 22%),
  url(../img/hero-home-tech-ai.jpg) center/cover no-repeat,var(--bg)}
.page-hero{background:
  linear-gradient(90deg,rgba(26,27,31,.96) 6%,rgba(26,27,31,.78) 50%,rgba(26,27,31,.55) 100%),
  var(--page-hero-image,url(../img/facade.jpg)) center/cover no-repeat,var(--bg2)}
.page-hero--azienda{--page-hero-image:url(../img/hero-azienda-ai.jpg)}
.page-hero--contatti{--page-hero-image:url(../img/hero-contatti-ai.jpg)}
.page-hero--servizi{--page-hero-image:url(../img/hero-servizi-ai.jpg)}
.legal a{color:#d6d9df;text-decoration:underline}

/* certificazioni */
.certs{display:flex;gap:16px;flex-wrap:wrap;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.certs img{background:#fff;padding:6px;height:auto;width:150px}

/* logo in riquadro chiaro (la parte nera si legge su sfondo scuro) */
.brand img{background:#fff;padding:3px;display:block;border-radius:0}