/* Spark Projekt — foglio di stile comune */
@font-face{font-family:"Archivo";src:url("../fonts/archivo.woff2") format("woff2");font-weight:100 900;font-stretch:62% 125%;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url("../fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url("../fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url("../fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url("../fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");font-weight:500;font-display:swap}

:root{
  --petrolio:#0d5c63; --petrolio-scuro:#073c41; --arancio:#f07d1a; --arancio-scuro:#c65f08; --arancio-chiaro:#ffb066;
  --bg:#efede8; --surface:#ffffff; --fg:#1f2a2c; --muted:#56656a; --line:#d9d6ce; --chip:#e4e1d9;
  --display:"Archivo",system-ui,sans-serif; --body:"IBM Plex Sans",system-ui,"Segoe UI",sans-serif; --mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--petrolio)}
.wrap{max-width:1140px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
:focus-visible{outline:2px solid var(--arancio);outline-offset:2px}

/* Intestazione */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(6px)}
.top .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-block:14px}
.logo{font-family:var(--display);font-weight:800;font-size:21px;font-stretch:112%;letter-spacing:.01em;color:var(--fg);text-decoration:none;white-space:nowrap}
.logo b{color:var(--arancio)}
.nav{display:flex;gap:26px;font-size:15px}
.nav a{color:var(--muted);text-decoration:none;padding-block:4px}
.nav a:hover{color:var(--fg)}
.nav a.on{color:var(--fg);font-weight:600;box-shadow:inset 0 -2px 0 var(--arancio)}
.menu-btn{display:none;font:inherit;font-weight:600;background:none;border:1px solid var(--line);border-radius:6px;padding:7px 12px;color:var(--fg);cursor:pointer}

/* Apertura */
.hero{position:relative;background:var(--petrolio-scuro);color:#fff;overflow:hidden}
.hero .img{position:absolute;inset:0 0 0 42%;background:#fff 35% center/cover no-repeat}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--petrolio-scuro) 40%,rgba(7,60,65,.7) 52%,rgba(7,60,65,.1) 72%,rgba(7,60,65,0) 100%)}
.hero .wrap{position:relative;z-index:1;padding-block:76px 60px}
.hero.small .wrap{padding-block:56px 48px}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--arancio-chiaro)}
.hero h1{font-family:var(--display);font-weight:800;font-stretch:118%;font-size:clamp(32px,5vw,54px);line-height:1.05;margin:14px 0 18px;max-width:15ch;text-wrap:balance}
.hero.small h1{font-size:clamp(30px,4.2vw,46px);max-width:18ch}
.hero p.lead{max-width:48ch;color:rgba(255,255,255,.88);font-size:17px;margin:0 0 28px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 22px;border-radius:6px;font-weight:600;text-decoration:none;font-size:15px;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn.pri{background:var(--arancio);color:#fff}
.btn.pri:hover{background:var(--arancio-scuro)}
.btn.sec{border-color:rgba(255,255,255,.45);color:#fff}
.btn.sec:hover{border-color:#fff}
.figures{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:48px;max-width:720px}
.figures div{border-top:2px solid var(--arancio);padding-top:10px;font-size:13px;color:rgba(255,255,255,.78)}
.figures strong{display:block;font-family:var(--display);font-size:19px;line-height:1.2;margin-bottom:4px;font-weight:700;color:#fff;font-stretch:110%}

/* Sezioni */
.blk .wrap{padding-block:64px}
.blk.alt{border-top:1px solid var(--line)}
.lab{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--arancio-scuro)}
h2{font-family:var(--display);font-weight:700;font-stretch:112%;font-size:clamp(24px,3vw,32px);line-height:1.15;margin:8px 0 28px;text-wrap:balance}
h3{font-family:var(--display);font-weight:700;margin:0;line-height:1.25}
.intro{max-width:62ch;color:var(--muted);margin:-12px 0 28px}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:24px;display:grid;gap:8px;align-content:start}
.card h3{font-size:18px}
.card p{margin:0;color:var(--muted);font-size:15px}
.num{font-family:var(--mono);font-size:12px;color:var(--petrolio);letter-spacing:.04em}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{background:var(--chip);border-radius:999px;padding:6px 14px;font-size:14px}
.tools{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.tools div{border-left:2px solid var(--arancio);padding-left:14px}
.tools .ai{border-left-color:var(--petrolio)}
.tools strong{display:block;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.tools span{color:var(--muted);font-size:15px}
.cta{background:var(--surface);border:1px solid var(--arancio);border-radius:8px;padding:28px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.cta h3{margin:0 0 4px;font-size:20px}
.cta p{margin:0;color:var(--muted)}

/* Fascia intelligenza artificiale */
.ia{background:var(--petrolio);color:#fff}
.ia .wrap{padding-block:64px}
.ia .lab,.ia .num{color:var(--arancio-chiaro)}
.ia .intro{color:rgba(255,255,255,.86)}
.ia .card{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.2)}
.ia .card h3{color:#fff}
.ia .card p{color:rgba(255,255,255,.82)}
.ia-note{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--petrolio);border-radius:0;padding:16px 18px;margin-top:20px;font-size:15px;color:var(--muted)}
.ia-note strong{color:var(--fg)}

/* Servizi */
.serv{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;padding-block:44px;border-top:1px solid var(--line)}
.serv:first-child{border-top:0;padding-top:0}
.serv:nth-child(even) .serv-img{order:2}
.serv-img{background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden;aspect-ratio:16/10}
.serv-img img{width:100%;height:100%;object-fit:cover}
.serv h3{font-size:24px;font-stretch:110%;margin:6px 0 10px}
.serv p{color:var(--muted);margin:0 0 12px}
.serv ul{margin:0;padding-left:18px;color:var(--fg)}
.serv li{margin-bottom:4px}
.serv .ai-tag{display:inline-block;margin-top:12px;font-size:13px;background:rgba(13,92,99,.1);color:var(--petrolio);border-radius:999px;padding:4px 12px;font-weight:600}

/* Progetti */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters button{font:inherit;font-size:14px;font-weight:500;padding:7px 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--petrolio);border-color:var(--petrolio);color:#fff}
.filters button span{opacity:.6;margin-left:4px;font-variant-numeric:tabular-nums}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.gallery.tre{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:820px){.gallery.tre{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.gallery.tre{grid-template-columns:1fr}}
.proj{background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden;cursor:pointer;text-align:left;padding:0;font:inherit;color:inherit;display:flex;flex-direction:column}
.proj:hover{border-color:var(--arancio)}
.proj .ph{aspect-ratio:4/3;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden}
.proj .ph img{width:100%;height:100%;object-fit:contain}
.proj .tx{padding:14px 16px 16px;border-top:1px solid var(--line);display:grid;gap:4px}
.proj .tx b{font-family:var(--display);font-size:16px;line-height:1.25}
.proj .tx span{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--arancio-scuro)}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(7,25,27,.9);display:flex;align-items:center;justify-content:center;padding:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) max(16px,env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.lightbox figure{margin:0;max-width:1100px;width:100%;background:var(--surface);border-radius:8px;overflow:hidden}
.lightbox img{width:100%;max-height:72vh;object-fit:contain;background:#fff}
.lightbox figcaption{padding:16px 20px;display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.lightbox figcaption b{font-family:var(--display);font-size:18px;display:block}
.lightbox figcaption p{margin:4px 0 0;color:var(--muted)}
.lb-close{font:inherit;font-weight:600;background:var(--fg);color:var(--bg);border:0;border-radius:6px;padding:8px 14px;cursor:pointer;flex:none}

/* Contatti */
.contact{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:start}
.form{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:28px;display:grid;gap:18px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:grid;gap:6px}
.field label{font-size:14px;font-weight:600}
.field input,.field textarea,.field select{font:inherit;font-size:15px;padding:11px 13px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);width:100%}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--petrolio);box-shadow:0 0 0 3px rgba(13,92,99,.15)}
.field textarea{min-height:150px;resize:vertical}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}
.check input{margin-top:4px;width:18px;height:18px;accent-color:var(--petrolio)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.msg{font-size:15px;padding:12px 14px;border-radius:6px}
.msg.ok{background:rgba(13,92,99,.1);color:var(--petrolio)}
.msg.err{background:rgba(198,95,8,.12);color:var(--arancio-scuro)}
.side{display:grid;gap:20px}
.side .card .mail{font-family:var(--mono);font-size:15px;color:var(--fg);word-break:break-all}

/* Testo lungo (privacy) */
.prose{max-width:72ch}
.prose h2{font-size:22px;margin:32px 0 10px}
.prose p,.prose li{color:var(--fg)}

/* Piè di pagina */
.foot{background:var(--petrolio-scuro);color:rgba(255,255,255,.8);font-size:14px}
.foot .wrap{display:flex;justify-content:space-between;gap:12px 24px;flex-wrap:wrap;padding-block:28px}
.foot a{color:#fff}
.foot .links{display:flex;gap:18px;flex-wrap:wrap}

/* Telefono e tablet */
@media (max-width:960px){.tools{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:820px){
  .cards,.serv,.contact{grid-template-columns:1fr}
  .serv:nth-child(even) .serv-img{order:0}
  .figures{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero .img{inset:0;opacity:.35}
  .hero::after{background:rgba(7,60,65,.55)}
}
@media (max-width:640px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;gap:4px;padding:12px max(16px,env(safe-area-inset-right,0px)) 18px max(16px,env(safe-area-inset-left,0px));border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .nav a{padding-block:10px}
  .tools,.row2{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Sfondi di pagina e fasce con immagine */
.pagebg{position:fixed;inset:0;z-index:-1;background:var(--bg) center/cover no-repeat}
.pagebg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(239,237,232,.6),rgba(239,237,232,.74))}
.band{position:relative;color:#fff;background:var(--petrolio-scuro) center/cover no-repeat}
.band::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,60,65,.95) 0%,rgba(7,60,65,.84) 55%,rgba(7,60,65,.62) 100%)}
.band .wrap{position:relative;padding-block:72px}
.band .lab,.band .num{color:var(--arancio-chiaro)}
.band h2,.band .card h3,.band .cta h3{color:#fff}
.band .intro,.band .card p{color:rgba(255,255,255,.85)}
.band .chips span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff}
.band .card{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22)}
.band .cta{background:rgba(255,255,255,.96)}
.band .cta h3{color:var(--fg)}

/* Video */
.filters button.vid{border-color:var(--arancio);color:var(--arancio-scuro);font-weight:600}
.filters button.vid[aria-pressed="true"]{background:var(--arancio);border-color:var(--arancio);color:#fff}
.proj .ph{position:relative}
.proj .play{position:absolute;inset:auto auto 12px 12px;width:44px;height:44px;border-radius:50%;background:var(--arancio);display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.proj .play::before{content:"";margin-left:4px;border-left:14px solid #fff;border-top:9px solid transparent;border-bottom:9px solid transparent}
.lightbox video{width:100%;max-height:72vh;background:#000;display:block}