/* =========================================================
   Dott. Gerardo Fonzo — landing 3D
   Linguaggio visivo: carta chiara + griglia di punti, display
   serif ad alto contrasto, pill nav, canvas WebGL sticky.
   ========================================================= */

:root{
  --paper:#f2f1ed;
  --paper-2:#fbfaf8;
  --ink:#131316;
  --ink-soft:#3f3d45;
  --muted:#79767f;
  --line:#e0ddd6;
  --line-2:#cfcbc2;
  --brand:#cf2222;
  --brand-dark:#a81919;
  --brand-soft:#fdf0ef;
  --radius:14px;
  --radius-lg:22px;
  --max:1180px;
  --pad:clamp(20px,4vw,48px);
  --ease:cubic-bezier(.22,1,.36,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0;padding:0}
body{
  background:var(--paper);
  color:var(--ink-soft);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-loading{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--brand);color:#fff}

/* ---------- sfondo: griglia di punti + grana ---------- */
.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px,rgba(19,19,22,.13) 1px,transparent 0);
  background-size:26px 26px;
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 100%);
  opacity:.75;
}
.noise{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/></filter><rect width='140' height='140' filter='url(%23n)'/></svg>");
  mix-blend-mode:multiply;
}

/* ---------- loader ---------- */
.loader{
  position:fixed;inset:0;z-index:120;background:var(--paper);
  display:grid;place-items:center;transition:opacity .7s var(--ease),visibility .7s;
}
.loader.done{opacity:0;visibility:hidden}
.loader-inner{display:flex;flex-direction:column;align-items:center;gap:14px}
.loader-mark{
  width:26px;height:26px;border-radius:8px;background:var(--ink);
  animation:markSpin 1.6s var(--ease) infinite;
}
@keyframes markSpin{
  0%{transform:rotate(0) scale(1);border-radius:8px}
  50%{transform:rotate(180deg) scale(.7);border-radius:50%;background:var(--brand)}
  100%{transform:rotate(360deg) scale(1);border-radius:8px}
}
.loader-txt{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.loader-bar{display:block;width:160px;height:2px;background:var(--line-2);overflow:hidden}
.loader-bar i{display:block;height:100%;width:0;background:var(--ink);transition:width .3s linear}

/* ---------- layout ---------- */
.wrap{width:min(var(--max),100% - var(--pad)*2);margin-inline:auto;position:relative;z-index:3}
.section{padding:clamp(54px,7vw,96px) 0;position:relative;z-index:3}
.two-col{display:grid;grid-template-columns:200px 1fr;gap:clamp(24px,5vw,72px);align-items:start}
/* sezioni con una colonna 3D a destra */
.two-col.has-visual{grid-template-columns:180px minmax(0,1fr) clamp(220px,24vw,330px);gap:clamp(20px,3.5vw,52px)}
.col-visual{position:sticky;top:110px;height:clamp(300px,32vw,420px)}
.col-visual canvas{width:100%;height:100%;display:block}

/* ---------- tipografia ---------- */
.display{
  font-family:"Instrument Serif",Georgia,"Times New Roman",serif;
  font-weight:400;color:var(--ink);
  letter-spacing:-.015em;line-height:1.03;
  font-size:clamp(38px,5.6vw,74px);
  margin:0 0 22px;
}
.display em{font-style:italic;color:var(--brand)}
.display.xl{font-size:clamp(42px,7vw,96px)}
.display.center,.center{text-align:center}
h1.display{font-size:clamp(40px,5.4vw,72px);margin-bottom:26px}
.eyebrow{
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--brand);font-weight:600;margin:0 0 18px;
}
.col-label{
  display:flex;align-items:center;gap:9px;
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);font-weight:600;margin-bottom:18px;
}
.col-label.center{justify-content:center}
.tick{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none}
.lede{font-size:clamp(16px,1.25vw,19px);color:var(--ink-soft);max-width:62ch;margin:0 0 26px}
.lede.center{margin-inline:auto}
.prose p{margin:0 0 18px;max-width:64ch;font-size:16.5px}
.prose b{color:var(--ink);font-weight:600}

/* ---------- bottoni ---------- */
.btn{
  --bg:transparent;--fg:var(--ink);--bd:var(--line-2);
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  gap:8px;padding:12px 20px;border-radius:999px;
  background:var(--bg);color:var(--fg);border:1px solid var(--bd);
  font-size:14px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;
  transition:transform .45s var(--ease),background .3s,color .3s,border-color .3s,box-shadow .45s var(--ease);
  will-change:transform;overflow:hidden;
}
.btn span{position:relative;z-index:2}
.btn.lg{padding:15px 26px;font-size:15px}
.btn.full{width:100%}
.btn-solid{--bg:var(--ink);--fg:#fff;--bd:var(--ink)}
.btn-solid:hover{--bg:var(--brand);--bd:var(--brand);box-shadow:0 12px 30px -12px rgba(207,34,34,.65)}
.btn-line:hover{--bd:var(--ink);background:rgba(19,19,22,.04)}
.btn-ghost{--bd:transparent;color:var(--ink-soft);font-weight:500}
.btn-ghost:hover{color:var(--ink);background:rgba(19,19,22,.05)}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--ink);
  border-bottom:1px solid var(--line-2);padding-bottom:4px;transition:color .3s,border-color .3s;
}
.link-arrow i{font-style:normal;transition:transform .4s var(--ease)}
.link-arrow:hover{color:var(--brand);border-color:var(--brand)}
.link-arrow:hover i{transform:translateX(5px)}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px var(--pad);
  transition:transform .55s var(--ease);
}
.nav.hide{transform:translateY(-120%)}
.pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 16px;border-radius:999px;
  background:rgba(19,19,22,.92);color:#fff;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  font-size:13px;font-weight:500;
}
.brand .mark{width:14px;height:14px;border-radius:4px;background:var(--brand);flex:none;transition:transform .5s var(--ease),border-radius .5s var(--ease)}
.brand:hover .mark{transform:rotate(90deg);border-radius:50%}
.brand-name{font-weight:600;letter-spacing:-.01em}
.brand-sep{width:1px;height:13px;background:rgba(255,255,255,.25)}
.brand-role{color:rgba(255,255,255,.62);font-size:12px}
.links{background:rgba(251,250,248,.82);color:var(--ink);border:1px solid var(--line);padding:7px 8px;gap:2px}
.links a{padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;color:var(--ink-soft);transition:background .3s,color .3s}
.links a:hover,.links a.active{background:var(--ink);color:#fff}
.nav-cta{display:flex;align-items:center;gap:8px}

/* ---------- hero ---------- */
.hero{position:relative;padding:clamp(120px,16vw,170px) 0 0;min-height:100svh;display:flex;flex-direction:column;justify-content:center}
.hero-stage{position:absolute;inset:0;z-index:1;pointer-events:none}
.stage-canvas{width:100%;height:100%;display:block}
/* i canvas entrano in dissolvenza al primo fotogramma disegnato */
.stage-canvas,.viz,.orb{opacity:0;transition:opacity .9s var(--ease)}
.stage-canvas.is-on,.viz.is-on,.orb.is-on{opacity:1}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,5vw,64px);
  align-items:center;padding-bottom:clamp(30px,4vw,52px);
}
.hero-grid > *,.two-col > *,.percorso-body > *{min-width:0}
.hero-copy{max-width:640px}
.hero-meta{list-style:none;margin:0 0 30px;padding:0;display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;color:var(--muted)}
.hero-meta li{display:flex;align-items:center;gap:8px}
.hero-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--brand)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-actions.center{justify-content:center}

.hero-portrait{perspective:1000px;width:100%;max-width:440px;justify-self:end}
.portrait-inner{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--paper-2);border:1px solid var(--line);
  box-shadow:0 40px 80px -50px rgba(19,19,22,.55);
  transform-style:preserve-3d;transition:transform .5s var(--ease);
}
.portrait-inner img{aspect-ratio:1/1;object-fit:cover;width:100%;height:auto}
.portrait-tag{
  position:absolute;left:14px;bottom:14px;
  padding:8px 14px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(251,250,248,.9);color:var(--ink);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.6);
}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border-block:1px solid var(--line);
}
.stat{background:var(--paper);padding:22px clamp(10px,2vw,24px);display:flex;flex-direction:column;gap:4px}
.stat b{font-family:"Instrument Serif",Georgia,serif;font-size:clamp(20px,2.2vw,28px);font-weight:400;color:var(--ink);line-height:1.1}
.stat span{font-size:12.5px;color:var(--muted)}

/* ---------- marquee ---------- */
.marquee-sec{padding:0;position:relative;z-index:3;border-bottom:1px solid var(--line);overflow:hidden;background:var(--paper)}
.marquee{overflow:hidden;padding:16px 0;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);}
.marquee-track{display:flex;align-items:center;gap:26px;width:max-content;animation:slide 38s linear infinite}
.marquee-track span{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;white-space:nowrap}
.marquee-track i{width:5px;height:5px;border-radius:50%;background:var(--line-2);flex:none}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- percorso (node graph 3D) ---------- */
.percorso{position:relative;padding:clamp(54px,7vw,96px) 0;z-index:3}
.percorso-head{margin-bottom:clamp(28px,4vw,52px)}
.percorso-body{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,64px);align-items:start}
.percorso-stage{
  position:sticky;top:0;height:100svh;
  display:flex;align-items:center;justify-content:center;
}
/* il ritmo verticale degli step dà allo stage sticky la sua corsa:
   la colonna di testo DEVE restare più alta della finestra */
/* contatore al centro del quadrante (solo variante ?visita=dial) */
.dial-centre{
  position:absolute;inset:0;display:grid;place-content:center;
  text-align:center;pointer-events:none;
}
.dial-centre b{
  display:block;font-family:"Instrument Serif",Georgia,serif;font-weight:400;
  font-size:clamp(48px,5.5vw,76px);line-height:1;color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.dial-centre span{
  display:block;margin-top:8px;font-size:10.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);font-weight:600;
}

.steps{list-style:none;margin:0;padding:clamp(90px,26vh,280px) 0;display:flex;flex-direction:column;gap:clamp(120px,30vh,320px)}
.step{opacity:.34;transition:opacity .6s var(--ease),transform .6s var(--ease);transform:translateY(6px)}
.step.active{opacity:1;transform:none}
.step-n{
  display:inline-block;font-family:"Instrument Serif",Georgia,serif;
  font-size:14px;letter-spacing:.1em;color:var(--brand);margin-bottom:12px;
  padding:4px 12px;border:1px solid var(--line-2);border-radius:999px;
}
.step.active .step-n{border-color:var(--brand);background:var(--brand-soft)}
.step h3{font-family:"Instrument Serif",Georgia,serif;font-weight:400;color:var(--ink);font-size:clamp(24px,2.8vw,34px);margin:0 0 12px;line-height:1.15}
.step p{margin:0;max-width:52ch;font-size:16px}

/* ---------- prezzi ---------- */
.price-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:clamp(36px,5vw,56px) 0 26px}
.price-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(24px,3vw,36px);display:flex;flex-direction:column;gap:22px;
  transition:transform .6s var(--ease),box-shadow .6s var(--ease),border-color .4s;
}
.price-card:hover{transform:translateY(-6px);box-shadow:0 40px 70px -50px rgba(19,19,22,.5);border-color:var(--line-2)}
.price-card.featured{border-color:var(--ink);box-shadow:0 30px 60px -50px rgba(19,19,22,.6)}
.price-card header{display:flex;flex-direction:column;gap:10px}
.price-card h3{margin:0;font-size:15px;font-weight:600;color:var(--ink);letter-spacing:-.01em}
.price{display:flex;align-items:baseline;gap:6px;font-family:"Instrument Serif",Georgia,serif;color:var(--ink)}
.price .amount{font-size:clamp(46px,6vw,68px);line-height:1}
.price .cur{font-size:24px;color:var(--muted)}
.price-card ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;flex:1}
.price-card li{position:relative;padding-left:24px;font-size:15px}
.price-card li::before{
  content:"";position:absolute;left:0;top:8px;width:12px;height:6px;
  border-left:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);transform:rotate(-45deg);
}
.note{font-size:14px;color:var(--muted);max-width:70ch;margin:0 auto;text-align:center}

/* ---------- aree ---------- */
.area-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:clamp(30px,4vw,50px)}
.area-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(20px,2.4vw,28px);display:flex;flex-direction:column;gap:14px;
  transition:transform .6s var(--ease),box-shadow .6s var(--ease),border-color .4s;
}
.area-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 40px 70px -50px rgba(19,19,22,.5)}
.area-viz{height:clamp(170px,20vw,210px);margin:-6px 0 4px;border-radius:var(--radius);background:linear-gradient(180deg,rgba(19,19,22,.035),rgba(19,19,22,0));overflow:hidden}
.area-viz canvas{width:100%;height:100%;display:block}
.area-card h3{margin:0;font-family:"Instrument Serif",Georgia,serif;font-weight:400;font-size:23px;line-height:1.15;color:var(--ink)}
.area-card p{margin:0;font-size:14.5px;flex:1}
.arrow{font-size:13.5px;font-weight:600;color:var(--ink);display:inline-flex;gap:7px;align-items:center}
.arrow i{font-style:normal;transition:transform .4s var(--ease)}
.area-card:hover .arrow{color:var(--brand)}
.area-card:hover .arrow i{transform:translateX(5px)}

/* ---------- recensioni ---------- */
.rev-rail{margin:clamp(28px,4vw,44px) 0 32px;overflow:hidden;position:relative;z-index:3;
  mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent);}
.rev-track{display:flex;gap:20px;padding-inline:max(calc((100vw - var(--max))/2),var(--pad));will-change:transform}
.rev{
  flex:0 0 min(420px,80vw);margin:0;background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;
  display:flex;flex-direction:column;gap:16px;
}
.stars{color:var(--brand);letter-spacing:.14em;font-size:13px}
.rev blockquote{margin:0;font-size:15.5px;line-height:1.62;color:var(--ink-soft);flex:1}
.rev figcaption{display:flex;flex-direction:column;gap:2px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.rev figcaption b{color:var(--ink);font-size:14px}
.rev figcaption em{font-style:normal;color:var(--brand);font-size:12px;font-weight:600}

/* ---------- studio ---------- */
.info{margin:26px 0 32px;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.info > div{background:var(--paper);padding:20px 22px}
.info dt{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:6px}
.info dd{margin:0;font-size:15px;color:var(--ink)}
.info dd a{border-bottom:1px solid var(--line-2)}
.info dd a:hover{color:var(--brand);border-color:var(--brand)}

/* ---------- faq ---------- */
.acc{border-top:1px solid var(--line)}
.acc details{border-bottom:1px solid var(--line)}
.acc summary{
  list-style:none;cursor:pointer;padding:22px 40px 22px 0;position:relative;
  font-size:clamp(17px,1.6vw,20px);font-weight:500;color:var(--ink);
  font-family:"Instrument Serif",Georgia,serif;transition:color .3s;
}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{color:var(--brand)}
.acc summary::after{
  content:"";position:absolute;right:6px;top:50%;width:11px;height:11px;
  border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:translateY(-70%) rotate(45deg);transition:transform .4s var(--ease);
}
.acc details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.acc details > div{overflow:hidden}
.acc details p{margin:0 0 22px;max-width:66ch;font-size:15.5px}

/* ---------- cta finale ---------- */
.cta{position:relative;padding:clamp(68px,9vw,120px) 0;overflow:hidden;z-index:3;border-top:1px solid var(--line)}
.cta > .stage-canvas{position:absolute;inset:0;z-index:1;pointer-events:none}
.cta-inner{position:relative;z-index:3;display:flex;flex-direction:column;align-items:center}
.disclaimer{margin:34px 0 0;font-size:12.5px;color:var(--muted);max-width:60ch;text-align:center}

/* ---------- footer ---------- */
.footer{position:relative;z-index:3;border-top:1px solid var(--line);padding:38px 0 26px;background:var(--paper)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;padding-bottom:34px}
.foot-name{margin:0 0 6px;font-family:"Instrument Serif",Georgia,serif;font-size:22px;color:var(--ink)}
.foot-sub{margin:0;font-size:13.5px;color:var(--muted)}
.foot-links{display:flex;flex-direction:column;gap:8px;font-size:13.5px}
.foot-links a{color:var(--ink-soft);width:max-content;border-bottom:1px solid transparent;transition:color .3s,border-color .3s}
.foot-links a:hover{color:var(--brand);border-color:var(--brand)}
.foot-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:20px;font-size:12px;color:var(--muted)}

/* ---------- barra mobile ---------- */
.mobile-bar{
  position:fixed;left:12px;right:12px;bottom:12px;z-index:70;display:none;gap:8px;
  padding:8px;border-radius:999px;background:rgba(251,250,248,.9);
  border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 20px 40px -28px rgba(19,19,22,.7);
}
.mobile-bar .btn{flex:1}

/* ---------- animazioni di ingresso ---------- */
.split-lines .line{display:block;overflow:hidden}
.split-lines .line > span{display:block;will-change:transform}
.reveal-up{will-change:transform,opacity}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-portrait{max-width:420px}
  .percorso-body{grid-template-columns:1fr}
  .percorso-stage{
    height:46svh;top:0;order:-1;z-index:2;background:var(--paper);
    mask-image:linear-gradient(180deg,#000 76%,transparent);
    -webkit-mask-image:linear-gradient(180deg,#000 76%,transparent);
  }
  .steps{padding:8px 0 clamp(60px,18vh,140px);gap:clamp(90px,26vh,200px)}
  .area-grid{grid-template-columns:1fr}
  .two-col,.two-col.has-visual{grid-template-columns:1fr;gap:14px}
  .col-visual{position:relative;top:auto;order:-1;height:clamp(280px,78vw,340px);margin-bottom:8px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .hero-stage{opacity:.5}
  .links,.nav-cta .btn-ghost{display:none}
  .brand-sep,.brand-role{display:none}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr}
  .info{grid-template-columns:1fr}
  .mobile-bar{display:flex}
  .footer{padding-bottom:96px}
  .footer-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .marquee-track{animation:none}
}