/* ============================================================
   AQUAEXAURA — dark / minimal / premium
   Palette: navy profondo, bianco, accenti blu-acqua
   ============================================================ */

:root{
  --bg:        #060b16;
  --bg-2:      #0a1224;
  --panel:     #0d1830;
  --panel-2:   #101d3a;
  --ink:       #f2f6fb;
  --muted:     #9fb0c8;
  --faint:     #5f7191;
  --accent:    #4cc9f0;   /* blu acqua */
  --accent-2:  #5fe0d0;   /* aqua brand */
  --line:      rgba(255,255,255,.08);
  --line-2:    rgba(255,255,255,.14);
  --glow:      rgba(76,201,240,.14);
  --font-d:    'Bricolage Grotesque', system-ui, sans-serif;
  --font-b:    'Inter', system-ui, sans-serif;
  --font-m:    'Space Mono', ui-monospace, monospace;
  --wrap:      1180px;
  --r:         18px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{overscroll-behavior-x:none}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-b);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img,video{display:block;max-width:100%}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-2)}
::selection{background:var(--accent);color:#04101d}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}

/* ---------- typography ---------- */
.eyebrow{
  display:inline-block;font-family:var(--font-m);font-size:.72rem;
  letter-spacing:.22em;text-transform:uppercase;color:var(--accent);
  border:1px solid var(--line-2);border-radius:99px;padding:.45em 1.1em;
  margin-bottom:26px;background:rgba(76,201,240,.06);
}
.title{
  font-family:var(--font-d);font-weight:640;line-height:1.06;
  font-size:clamp(2rem,4.4vw,3.4rem);letter-spacing:-.02em;max-width:20ch;
}
.lead{color:var(--muted);max-width:58ch;margin-top:20px;font-size:1.06rem}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:60;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(6,11,22,.55);border-bottom:1px solid transparent;
  transition:border-color .3s,background .3s;
}
.nav.scrolled{border-bottom-color:var(--line);background:rgba(6,11,22,.82)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-family:var(--font-d);font-weight:700;font-size:1.15rem;color:var(--ink);letter-spacing:.01em}
.logo em{font-style:normal;color:var(--accent)}
.nav ul{display:flex;gap:34px;list-style:none}
.nav ul a{color:var(--muted);font-size:.92rem;transition:color .2s}
.nav ul a:hover{color:var(--ink)}
.nav .btn{margin-left:10px}
.burger{display:none;background:none;border:0;color:var(--ink);font-size:1.5rem;cursor:pointer}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;font-family:var(--font-b);font-weight:600;font-size:.95rem;
  padding:.85em 1.9em;border-radius:99px;border:1px solid var(--line-2);
  color:var(--ink);transition:all .25s;cursor:pointer;background:transparent;
}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn--solid{background:var(--accent);border-color:var(--accent);color:#04101d}
.btn--solid:hover{background:var(--accent-2);border-color:var(--accent-2);color:#04101d}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;justify-content:center;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media video{width:100%;height:100%;object-fit:cover}
/* fallback animato se hero.mp4 manca */
.hero-fallback{
  position:absolute;inset:0;display:none;
  background:
    radial-gradient(70% 60% at 20% 20%, rgba(76,201,240,.16), transparent 60%),
    radial-gradient(60% 55% at 80% 75%, rgba(95,224,208,.11), transparent 60%),
    linear-gradient(180deg,#081020 0%, #060b16 100%);
}
.hero-fallback::before,
.hero-fallback::after{
  content:"";position:absolute;inset:-20%;
  background:radial-gradient(45% 38% at 60% 40%, rgba(76,201,240,.10), transparent 70%);
  animation:drift 16s ease-in-out infinite alternate;
}
.hero-fallback::after{
  background:radial-gradient(38% 32% at 30% 70%, rgba(95,224,208,.09), transparent 70%);
  animation-duration:22s;animation-delay:-8s;
}
@keyframes drift{from{transform:translate3d(-4%,-3%,0) scale(1)}to{transform:translate3d(4%,5%,0) scale(1.12)}}
.hero--novideo .hero-fallback{display:block}
.hero--novideo video{display:none}
.hero-shade{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg, rgba(6,11,22,.55) 0%, rgba(6,11,22,.35) 45%, var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2;text-align:center;padding:120px 28px 90px;max-width:900px}
.hero-inner .eyebrow{margin-bottom:32px}
.hero-title{
  font-family:var(--font-d);font-weight:680;letter-spacing:-.025em;
  font-size:clamp(2.6rem,7vw,5.2rem);line-height:1.02;
}
.hero-title em{font-style:normal;color:var(--accent)}
.hero-sub{color:var(--muted);font-size:clamp(1rem,1.6vw,1.2rem);max-width:54ch;margin:26px auto 40px}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-scroll{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;
  font-family:var(--font-m);font-size:.68rem;letter-spacing:.25em;text-transform:uppercase;color:var(--faint);
}
.hero-scroll::after{
  content:"";display:block;width:1px;height:38px;margin:10px auto 0;
  background:linear-gradient(var(--accent),transparent);animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:.25}50%{opacity:1}}

/* ---------- sections ---------- */
section{position:relative;padding:130px 0}
.band-alt{background:var(--bg-2)}

/* problema: stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:64px}
.stat{
  border:1px solid var(--line);border-radius:var(--r);padding:36px 30px;
  background:linear-gradient(180deg, rgba(255,255,255,.025), transparent);
}
.stat .n{
  font-family:var(--font-d);font-weight:700;font-size:clamp(2.4rem,4vw,3.4rem);
  color:var(--accent);letter-spacing:-.02em;line-height:1;
}
.stat .n small{font-size:.45em;color:var(--accent-2);margin-left:.1em}
.stat h3{font-family:var(--font-b);font-weight:600;font-size:1.02rem;margin:16px 0 8px}
.stat p{color:var(--muted);font-size:.92rem}
.stat .src{display:block;margin-top:14px;font-family:var(--font-m);font-size:.68rem;color:var(--faint)}
.alert{
  margin-top:42px;border-left:2px solid var(--accent);padding:6px 0 6px 24px;
  color:var(--muted);max-width:70ch;font-size:.98rem;
}
.alert strong{color:var(--ink)}

/* feature cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:64px}
.card{
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:var(--panel);transition:border-color .3s, transform .3s;
  will-change:transform;
}
.card:hover{border-color:var(--line-2);transform:translateY(-4px)}
.card-art{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.card-art img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.6,.2,1)}
.card:hover .card-art img{transform:scale(1.05)}
.card-art .ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(80% 100% at 50% 0%, var(--glow), transparent 70%),
    linear-gradient(160deg,var(--panel-2),var(--bg-2));
}
.card-art .ph svg{width:44%;max-width:150px;color:var(--accent);opacity:.9}
.card-body{padding:28px 28px 32px}
.card-body .k{font-family:var(--font-m);font-size:.7rem;letter-spacing:.2em;color:var(--accent);text-transform:uppercase}
.card-body h3{font-family:var(--font-d);font-weight:640;font-size:1.35rem;margin:12px 0 10px}
.card-body p{color:var(--muted);font-size:.95rem}

/* tecnologia steps */
.steps{margin-top:64px;border-top:1px solid var(--line)}
.step{
  display:grid;grid-template-columns:90px 260px 1fr;gap:26px;align-items:baseline;
  padding:30px 6px;border-bottom:1px solid var(--line);
}
.step .sn{font-family:var(--font-m);color:var(--accent);font-size:.95rem}
.step h3{font-family:var(--font-d);font-weight:640;font-size:1.2rem}
.step p{color:var(--muted);font-size:.95rem;max-width:62ch}
.specs{display:flex;flex-wrap:wrap;gap:12px;margin-top:44px}
.spec{
  font-family:var(--font-m);font-size:.74rem;letter-spacing:.06em;color:var(--muted);
  border:1px solid var(--line);border-radius:99px;padding:.55em 1.2em;
}

/* ---------- horizontal timeline (gamma) ---------- */
.hscroll{padding:0;background:var(--bg-2)}
.hscroll-pin{overflow:hidden}
.htrack{display:flex;width:max-content;align-items:stretch}
.hpanel{
  width:100vw;min-height:100svh;flex-shrink:0;
  display:flex;align-items:center;padding:120px 6vw 90px;
}
.hpanel-inner{max-width:1060px;margin:0 auto;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;width:100%}
.hpanel--intro .hpanel-inner{grid-template-columns:1fr;text-align:left;max-width:820px}
.hpanel .idx{font-family:var(--font-m);color:var(--accent);font-size:.8rem;letter-spacing:.2em}
.hpanel h3{font-family:var(--font-d);font-weight:680;font-size:clamp(2rem,4.5vw,3.6rem);letter-spacing:-.02em;margin:14px 0 6px}
.hpanel .cap{font-family:var(--font-m);color:var(--accent-2);font-size:1rem;margin-bottom:22px}
.hpanel p{color:var(--muted);max-width:46ch}
.hpanel ul{list-style:none;margin-top:26px;display:grid;gap:12px}
.hpanel ul li{color:var(--muted);font-size:.95rem;padding-left:26px;position:relative}
.hpanel ul li::before{content:"";position:absolute;left:0;top:.55em;width:12px;height:2px;background:var(--accent)}
.hpanel-art{
  position:relative;aspect-ratio:4/3.4;border-radius:var(--r);overflow:hidden;
  border:1px solid var(--line);background:
    radial-gradient(90% 90% at 50% 10%, var(--glow), transparent 70%),
    linear-gradient(165deg,var(--panel-2),var(--bg));
}
.hpanel-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hpanel-art .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.hpanel-art .ph svg{width:52%;color:var(--accent);opacity:.85}
.hprogress{
  position:absolute;left:6vw;right:6vw;bottom:44px;height:2px;background:var(--line);z-index:5;
}
.hprogress i{display:block;height:100%;width:0;background:var(--accent)}

/* ---------- applicazioni ---------- */
.apps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:64px}
.app{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--panel)}
.app-art{position:relative;aspect-ratio:16/9;background:var(--bg-2);overflow:hidden}
.app-art img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.6,.2,1)}
.app:hover .app-art img{transform:scale(1.06)}
.app-art .ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(85% 110% at 50% 0%, var(--glow), transparent 72%),
    linear-gradient(150deg,var(--panel-2),var(--bg-2));
  font-family:var(--font-d);font-weight:700;font-size:2.6rem;color:rgba(76,201,240,.4);
}
.app-body{padding:24px 26px 28px}
.app-body .k{font-family:var(--font-m);font-size:.68rem;letter-spacing:.2em;color:var(--accent)}
.app-body h3{font-family:var(--font-d);font-weight:640;font-size:1.18rem;margin:10px 0 8px}
.app-body p{color:var(--muted);font-size:.92rem}

/* ---------- contatti ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;margin-top:60px;align-items:start}
.contact-info p{color:var(--muted);max-width:44ch}
.contact-ch{margin-top:36px;display:grid;gap:14px}
.contact-ch a{
  display:flex;align-items:center;gap:14px;color:var(--ink);font-size:1.05rem;
  font-family:var(--font-d);font-weight:600;
}
.contact-ch a:hover{color:var(--accent)}
.contact-ch svg{width:20px;height:20px;color:var(--accent);flex-shrink:0}
.contact-addr{margin-top:34px;color:var(--faint);font-size:.9rem;font-family:var(--font-m)}

.form{display:grid;gap:8px}
.form label{font-size:.82rem;color:var(--muted);margin-top:14px;font-weight:500}
.form input[type=text],.form input[type=email],.form select,.form textarea{
  width:100%;background:var(--panel);border:1px solid var(--line);border-radius:12px;
  color:var(--ink);padding:.9em 1.1em;font:inherit;font-size:.95rem;
  transition:border-color .2s;
}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--accent)}
.form select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234cc9f0' stroke-width='2' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1.1em center}
.consent{display:flex;gap:12px;align-items:flex-start;margin:20px 0 6px;font-size:.85rem;color:var(--muted);cursor:pointer}
.consent input{margin-top:.3em;accent-color:var(--accent)}
.consent em{color:var(--accent);font-style:normal}
.form .btn{margin-top:16px;justify-self:start}
.formnote{font-size:.78rem;color:var(--faint);margin-top:12px}
.formok{
  display:none;border:1px solid var(--accent);border-radius:12px;padding:18px 20px;
  color:var(--accent-2);background:rgba(76,201,240,.06);margin-top:16px;font-size:.95rem;
}
.formerr{display:none;color:#ff9d9d;font-size:.88rem;margin-top:12px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:70px 0 40px;background:var(--bg)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-grid h4{font-family:var(--font-m);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);margin-bottom:18px}
.foot-grid ul{list-style:none;display:grid;gap:10px}
.foot-grid a{color:var(--muted);font-size:.9rem}
.foot-grid a:hover{color:var(--ink)}
.foot-brand p{color:var(--muted);font-size:.9rem;max-width:34ch;margin-top:14px}
.foot-legal{
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;
  color:var(--faint);font-size:.78rem;
}
.foot-legal .links{display:flex;gap:22px}
.foot-legal a{color:var(--faint)}
.foot-legal a:hover{color:var(--muted)}
.foot-src{margin-top:20px;color:var(--faint);font-size:.72rem;max-width:90ch;line-height:1.7}

/* ---------- overlays (privacy / cookie / legal) ---------- */
.overlay{
  position:fixed;inset:0;z-index:100;background:var(--bg);overflow-y:auto;
  display:none;
}
.overlay.open{display:block}
.ovbar{position:sticky;top:0;background:rgba(6,11,22,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);z-index:2}
.ovbar .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.wm{font-family:var(--font-d);font-weight:700}
.wm em{font-style:normal;color:var(--accent)}
.ovclose{background:none;border:1px solid var(--line-2);border-radius:99px;color:var(--ink);padding:.5em 1.2em;cursor:pointer;font:inherit;font-size:.85rem}
.ovclose:hover{border-color:var(--accent);color:var(--accent)}
.doc{max-width:760px;margin:0 auto;padding:70px 28px 110px}
.doc h1{font-family:var(--font-d);font-weight:680;font-size:2.2rem;margin:10px 0 6px}
.doc h2{font-family:var(--font-d);font-weight:640;font-size:1.25rem;margin:44px 0 12px}
.doc h3{font-size:1.02rem;margin:28px 0 8px}
.doc p,.doc li{color:var(--muted);font-size:.95rem}
.doc ul,.doc ol{padding-left:22px;margin:12px 0}
.doc .updated{font-family:var(--font-m);font-size:.75rem;color:var(--faint);margin-bottom:30px}
.doc table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.88rem}
.doc th,.doc td{border:1px solid var(--line);padding:10px 12px;text-align:left;color:var(--muted)}
.doc th{color:var(--ink);font-weight:600}

/* ---------- reveal helpers (GSAP set/animate; visibili di default) ---------- */
.rv{opacity:1}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .stats,.cards,.apps{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;gap:50px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hpanel-inner{grid-template-columns:1fr;gap:34px}
  .hpanel-art{max-width:480px}
  .step{grid-template-columns:60px 1fr;grid-template-rows:auto auto}
  .step p{grid-column:2}
}
@media (max-width:680px){
  section{padding:90px 0}
  .stats,.cards,.apps{grid-template-columns:1fr}
  .nav ul{display:none}
  .nav.open ul{
    display:grid;position:absolute;top:72px;left:0;right:0;gap:4px;
    background:rgba(6,11,22,.97);padding:20px 28px 30px;border-bottom:1px solid var(--line);
  }
  .nav.open ul a{display:block;padding:10px 0;font-size:1.05rem}
  .burger{display:block}
  .nav .btn{display:none}
  /* timeline: da orizzontale a verticale */
  .hscroll .htrack{display:block;width:auto}
  .hscroll .hpanel{width:auto;min-height:0;padding:70px 28px}
  .hprogress{display:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}