/* =========================================================
   TRE PONTI — conceria, Arzignano dal 1962
   Layout: industriale e sartoriale. Una pelle che attraversa la
   lavorazione (sezione agganciata allo scorrimento), un campionario
   interattivo, una richiesta campioni per clienti business.
   ========================================================= */
:root{
  --tannin:#2B1B13;    /* fondi scuri: tannino */
  --tannin-2:#3A261B;
  --ink:#1A1411;
  --bone:#F1ECE4;      /* fondo chiaro */
  --bone-2:#E4DCCF;
  --cognac:#8A4A23;    /* accento: pelle cognac */
  --cognac-lt:#C07A45;
  --wetblue:#8EA7B2;   /* il colore della pelle appena conciata */
  --crust:#CDB79E;
  --muted:#6A5E55;
  --on-dark:#D9CEC2;
  --line:#D3C8B8;
  --wa:#1F8F4E;
  --display:"Big Shoulders Display","Oswald","Arial Narrow",Impact,sans-serif;
  --body:"Instrument Sans",system-ui,sans-serif;
  --maxw:1180px;
  color-scheme:light;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);color:var(--ink);background:var(--bone);font-size:17px;line-height:1.6}
a{color:inherit}
img,svg{display:block;max-width:100%}
button{font:inherit}
:focus-visible{outline:2px solid var(--cognac-lt);outline-offset:3px;border-radius:2px}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:20px}
h1,h2,h3{font-family:var(--display);font-weight:800;line-height:.92;letter-spacing:.005em;text-wrap:balance}
h2{font-size:clamp(44px,6.4vw,88px);text-transform:uppercase}
h2 em{font-style:normal;color:var(--cognac)}
.sub{margin-top:16px;color:var(--muted);font-size:18px;max-width:36em}
section{padding-block:100px}
.dark{background:var(--tannin);color:var(--on-dark)}
.dark h2,.dark h3{color:#fff}
.dark h2 em{color:var(--cognac-lt)}
.dark .sub{color:#B8AA9C}
.spec{font-size:12px;letter-spacing:.14em;font-weight:600}

/* lingua: IT / EN */
html[data-lang="en"] .i-it{display:none!important}
html:not([data-lang="en"]) .i-en{display:none!important}

.demo-bar{background:#140D09;color:#C7B8A9;font-size:13px;text-align:center;padding:7px 12px}
.demo-bar a{color:#fff;font-weight:600}

/* ---------- Intestazione ---------- */
header.site{position:sticky;top:env(safe-area-inset-top,0px);z-index:40;background:rgba(241,236,228,.94);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.logo{text-decoration:none;display:flex;align-items:center;gap:12px;line-height:1}
.logo svg{width:38px;height:38px;flex:none}
.logo b{font-family:var(--display);font-weight:800;font-size:26px;letter-spacing:.04em;display:block;text-transform:uppercase}
.logo small{font-size:11px;letter-spacing:.16em;color:var(--muted)}
nav.main{display:flex;align-items:center;gap:24px}
nav.main a.lnk{text-decoration:none;font-weight:500;font-size:15px;color:var(--muted);padding-block:4px;border-bottom:2px solid transparent}
nav.main a.lnk:hover{color:var(--ink)}
nav.main a.lnk[aria-current="page"]{color:var(--ink);border-bottom-color:var(--cognac)}
.lang{display:inline-flex;border:1.5px solid var(--ink);border-radius:999px;overflow:hidden}
.lang button{background:transparent;border:0;padding:5px 11px;font-weight:600;font-size:13px;letter-spacing:.06em;cursor:pointer;color:var(--ink)}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--bone)}
.menu-btn{display:none;align-items:center;gap:8px;background:none;border:1.5px solid var(--ink);border-radius:999px;padding:7px 14px;color:var(--ink);cursor:pointer;font-weight:600}
.menu-btn svg{width:18px;height:18px}
.menu-panel{border-top:1px solid var(--line);background:var(--bone)}
.menu-panel .wrap{display:grid;padding-block:6px 18px}
.menu-panel a{font-family:var(--display);font-weight:800;font-size:40px;text-transform:uppercase;text-decoration:none;padding:6px 0;border-bottom:1px solid var(--line)}
.menu-panel a[aria-current="page"]{color:var(--cognac)}
.head-right{display:flex;align-items:center;gap:12px}
@media (max-width:900px){ nav.main{display:none} .menu-btn{display:inline-flex} }
@media (min-width:901px){ .menu-panel{display:none!important} }
@media (max-width:420px){ .logo small{display:none} .menu-btn .lbl{display:none} }

/* ---------- Bottoni ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:600;font-size:16px;text-decoration:none;
     padding:14px 24px;border-radius:2px;border:1.5px solid var(--ink);cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease}
.btn svg{width:19px;height:19px;flex:none}
.btn.solid{background:var(--ink);color:var(--bone)}
.btn.solid:hover{background:var(--cognac);border-color:var(--cognac)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--bone)}
.btn.cognac{background:var(--cognac);border-color:var(--cognac);color:#fff}
.btn.cognac:hover{background:#A35A2C;border-color:#A35A2C}
.btn.light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn.light:hover{background:#fff;color:var(--ink)}
.btn.wa{background:var(--wa);border-color:var(--wa);color:#fff}
.btn.small{padding:9px 16px;font-size:14px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

/* =========================================================
   HOME — apertura
   ========================================================= */
.hero{background:var(--tannin);color:var(--on-dark);overflow:hidden;position:relative}
.hero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;min-height:min(86svh,820px);padding-block:56px}
.hero .spec{color:var(--cognac-lt)}
.hero h1{font-size:clamp(76px,13vw,200px);color:#fff;text-transform:uppercase;margin-top:14px;line-height:.82}
.hero h1 .w{display:block;overflow:hidden}
.hero h1 .w > span{display:block}
.hero h1 .w:nth-child(2){color:var(--cognac-lt)}
.hero p.lead{margin-top:22px;font-size:19px;max-width:30em;color:#C9BCAF}
.hero .hide-art{position:relative}
.hero .hide-art svg{width:100%;height:auto}
.hero .hide-art .outline{stroke-dasharray:2600;stroke-dashoffset:2600}
.js .hero .hide-art .outline{animation:draw 2.6s cubic-bezier(.6,.05,.25,1) .3s forwards}
.js .hero .hide-art .fillin{opacity:0;animation:fade 1.4s ease 2.2s forwards}
.hero .hide-art .tag{position:absolute;right:4%;bottom:12%;background:var(--bone);color:var(--ink);padding:10px 14px;font-size:13px;line-height:1.4;box-shadow:0 18px 40px -18px rgba(0,0,0,.6)}
.hero .hide-art .tag b{display:block;font-family:var(--display);font-size:24px;font-weight:800;letter-spacing:.02em}
.js .hero .hide-art .tag{opacity:0;transform:translateY(10px);animation:heroIn .8s ease 2.6s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.hero .ticker{border-top:1px solid rgba(255,255,255,.1);overflow:hidden;white-space:nowrap;padding-block:14px;font-family:var(--display);font-weight:700;font-size:22px;letter-spacing:.08em;text-transform:uppercase;color:#7E6A5B}
.hero .ticker div{display:inline-block;animation:tick 40s linear infinite}
.hero .ticker span{margin-right:44px}
.hero .ticker span::after{content:"✦";margin-left:44px;color:var(--cognac)}
@keyframes tick{to{transform:translateX(-50%)}}
@media (max-width:900px){ .hero .grid{grid-template-columns:1fr;min-height:0;padding-block:40px 30px} .hero .hide-art{max-width:460px} }

/* Numeri */
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:56px}
.fact{border-top:2px solid var(--ink);padding-top:14px}
.fact b{display:block;font-family:var(--display);font-weight:800;font-size:clamp(48px,6vw,80px);line-height:1;font-variant-numeric:tabular-nums}
.fact span{color:var(--muted);font-size:15px}
@media (max-width:760px){ .facts{grid-template-columns:1fr 1fr} }

/* =========================================================
   LA LAVORAZIONE — agganciata allo scorrimento
   ========================================================= */
.scrub{position:relative}
.scrub .stick{position:sticky;top:71px;height:calc(100vh - 71px);height:calc(100svh - 71px);overflow:hidden}
#process{height:640vh}
#process .stick{display:grid;grid-template-columns:.8fr 1.2fr;background:var(--bone)}
#process .scene{position:relative;height:100%;overflow:hidden}
#process .scene svg{width:100%;height:100%;max-width:none}
#process .steps-txt{position:relative;height:100%;padding-left:clamp(20px,4vw,64px)}
.pstep{position:absolute;inset:0 0 0 clamp(20px,4vw,64px);display:flex;flex-direction:column;justify-content:center;opacity:0;transform:translateY(34px);transition:opacity .5s ease,transform .5s ease;pointer-events:none;padding-right:16px}
.pstep.on{opacity:1;transform:none}
.pstep .num{font-family:var(--display);font-weight:800;font-size:clamp(90px,11vw,150px);line-height:.8;color:transparent;-webkit-text-stroke:1.5px var(--cognac)}
.pstep .spec{color:var(--cognac);margin-top:18px}
.pstep h3{font-size:clamp(44px,5.4vw,76px);text-transform:uppercase;margin-top:6px}
.pstep p{margin-top:14px;color:var(--muted);max-width:25em;font-size:18px}
.readout{position:absolute;right:clamp(16px,3vw,40px);top:clamp(20px,5vh,48px);z-index:3;background:var(--ink);color:var(--bone);padding:12px 16px;display:grid;gap:2px;min-width:180px;font-variant-numeric:tabular-nums}
.readout .spec{color:#9C8E80}
.readout b{font-family:var(--display);font-weight:800;font-size:36px;line-height:1}
.proc-bar{position:absolute;left:clamp(20px,4vw,64px);right:clamp(16px,3vw,40px);bottom:26px;display:grid;grid-template-columns:repeat(6,1fr);gap:6px;z-index:3}
.proc-bar i{height:4px;background:var(--line);position:relative;overflow:hidden}
.proc-bar i::after{content:"";position:absolute;inset:0;background:var(--cognac);transform-origin:left;transform:scaleX(var(--f,0))}
@media (max-width:900px){
  #process .stick{grid-template-columns:1fr;grid-template-rows:45% 55%}
  #process .steps-txt{padding-left:0;order:2}
  #process .scene{order:1}
  .pstep{inset:0 20px;justify-content:flex-start;padding-top:8px}
  .pstep .num{font-size:64px}
  .pstep h3{font-size:40px}
  .pstep p{font-size:16px;margin-top:8px}
  .readout{min-width:0;padding:8px 12px}
  .readout b{font-size:26px}
  .proc-bar{left:20px;right:20px;bottom:16px}
}

/* Settori */
.markets{margin-top:48px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:2px solid var(--ink)}
.market{padding:22px 20px 26px 0;border-right:1px solid var(--line);display:grid;gap:8px}
.market:last-child{border-right:0}
.market + .market{padding-left:20px}
.market svg{width:46px;height:46px;color:var(--cognac)}
.market h3{font-size:34px;text-transform:uppercase}
.market p{color:var(--muted);font-size:15px}
@media (max-width:860px){ .markets{grid-template-columns:repeat(2,minmax(0,1fr))} .market h3{font-size:28px;overflow-wrap:anywhere} .market:nth-child(2){border-right:0} .market:nth-child(3){padding-left:0} .market:nth-child(n+3){border-top:1px solid var(--line)} }

@media (max-width:520px){ .markets{grid-template-columns:1fr} .market,.market + .market{padding:18px 0;border-right:0;border-top:1px solid var(--line)} }

/* =========================================================
   ARTICOLI — campionario
   ========================================================= */
.hero-book{background:var(--tannin);color:var(--on-dark);padding-block:56px 72px}
.hero-book h1{font-size:clamp(72px,11vw,160px);text-transform:uppercase;color:#fff}
.hero-book h1 em{font-style:normal;color:var(--cognac-lt)}
.hero-book .intro{margin-top:14px;max-width:34em;font-size:18px;color:#C9BCAF}
.sampler{margin-top:44px;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.swatch-stage{position:relative;display:grid;place-items:center}
.swatch-stage svg{width:100%;max-width:560px;height:auto;filter:drop-shadow(0 30px 40px rgba(0,0,0,.45))}
.swatch-stage .hide-sample{transition:fill .6s ease}
.swatch-label{position:absolute;left:6%;bottom:6%;background:var(--bone);color:var(--ink);padding:10px 14px;font-variant-numeric:tabular-nums}
.swatch-label b{display:block;font-family:var(--display);font-size:26px;font-weight:800;letter-spacing:.03em;text-transform:uppercase;line-height:1}
.swatch-label span{font-size:13px;color:var(--muted)}
.controls{display:grid;gap:22px}
.controls .spec{color:#9C8E80;display:block;margin-bottom:10px}
.art-tabs{display:flex;flex-wrap:wrap;gap:8px}
.art-tabs button{background:transparent;border:1.5px solid rgba(255,255,255,.3);color:#fff;padding:8px 16px;font-family:var(--display);font-weight:800;font-size:22px;letter-spacing:.06em;cursor:pointer;text-transform:uppercase;border-radius:2px}
.art-tabs button[aria-pressed="true"]{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.colors{display:flex;flex-wrap:wrap;gap:10px}
.colors button{width:42px;height:42px;border-radius:50%;border:2px solid transparent;cursor:pointer;box-shadow:inset 0 0 0 2px rgba(0,0,0,.25);transition:transform .15s ease}
.colors button:hover{transform:scale(1.1)}
.colors button[aria-pressed="true"]{border-color:#fff;outline:2px solid var(--cognac-lt);outline-offset:2px}
.finishes{display:flex;flex-wrap:wrap;gap:8px}
.finishes button{background:transparent;border:1.5px solid rgba(255,255,255,.3);color:#E9DFD4;padding:7px 14px;cursor:pointer;border-radius:999px;font-size:15px}
.finishes button[aria-pressed="true"]{background:var(--cognac);border-color:var(--cognac);color:#fff}
.specs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;border-top:1px solid rgba(255,255,255,.15);padding-top:16px}
.specs dt{font-size:11px;letter-spacing:.14em;color:#9C8E80}
.specs dd{color:#fff;font-weight:500;font-variant-numeric:tabular-nums}
@media (max-width:900px){ .sampler{grid-template-columns:1fr} }

.articles{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}
.article{background:#fff;border:1px solid var(--line);display:grid;grid-template-columns:150px 1fr;gap:22px;padding:22px;align-items:start;scroll-margin-top:90px}
.article .chip{aspect-ratio:3/4;border-radius:2px;position:relative;overflow:hidden;max-width:100%}
.article .chip svg{width:100%;height:100%}
.article .spec{color:var(--cognac)}
.article h3{font-size:44px;text-transform:uppercase;margin-top:4px}
.article p{color:var(--muted);font-size:15px;margin-top:6px}
.article dl{margin-top:12px;display:grid;grid-template-columns:1fr 1fr;gap:6px 14px;font-size:14px}
.article dt{font-size:11px;letter-spacing:.12em;color:var(--muted)}
.article dd{font-weight:600}
.article .row{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.article .row i{width:18px;height:18px;border-radius:50%;box-shadow:inset 0 0 0 1px rgba(0,0,0,.2)}
.article .btn{margin-top:16px}
@media (max-width:860px){ .articles{grid-template-columns:1fr} }
@media (max-width:480px){ .article{grid-template-columns:1fr} .article .chip{aspect-ratio:3/1.4} }

/* =========================================================
   CONTATTI — richiesta campioni
   ========================================================= */
.hero-contact{background:var(--tannin);color:var(--on-dark);overflow:hidden}
.hero-contact .grid{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;padding-block:56px}
.hero-contact h1{font-size:clamp(64px,10vw,140px);text-transform:uppercase;color:#fff;line-height:.86}
.hero-contact h1 em{font-style:normal;color:var(--cognac-lt)}
.hero-contact p{margin-top:16px;max-width:30em;font-size:18px;color:#C9BCAF}
.drum{width:min(100%,340px);justify-self:center}
.drum .spin{transform-origin:170px 170px;animation:spin 14s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media (max-width:860px){ .hero-contact .grid{grid-template-columns:1fr} .drum{width:220px} }

.req{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start}
form.request{background:#fff;border:1px solid var(--line);padding:30px;display:grid;gap:18px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:grid;gap:6px;min-width:0}
.field label,.field .lbl{font-weight:600;font-size:14px}
.field input,.field select,.field textarea{font:inherit;font-size:16px;padding:11px 13px;border:1.5px solid var(--line);border-radius:2px;background:#fff;color:var(--ink);width:100%}
.field textarea{min-height:80px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink)}
.checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.checks label{position:relative;cursor:pointer}
.checks input{position:absolute;inset:0;width:100%;height:100%;opacity:0;margin:0;cursor:pointer}
.checks input + span{display:flex;align-items:center;gap:10px;border:1.5px solid var(--line);padding:10px 12px;border-radius:2px;transition:all .15s ease}
.checks input + span i{width:22px;height:22px;border-radius:50%;flex:none;box-shadow:inset 0 0 0 1px rgba(0,0,0,.2)}
.checks span b{font-family:var(--display);font-weight:800;font-size:22px;letter-spacing:.04em}
.checks input:checked + span{border-color:var(--ink);background:var(--bone)}
.checks input:checked + span::after{content:"✓";margin-left:auto;font-weight:700;color:var(--cognac)}
.checks input:focus-visible + span{outline:2px solid var(--cognac);outline-offset:2px}
.range-row{display:flex;align-items:center;gap:14px}
.range-row input[type=range]{flex:1;accent-color:var(--cognac);padding:0;border:0}
.range-row output{font-family:var(--display);font-weight:800;font-size:28px;min-width:6ch;text-align:right;font-variant-numeric:tabular-nums}
.form-error{color:#9B2C1F;font-size:14px;font-weight:600;min-height:1em}
.send-row{display:flex;flex-wrap:wrap;gap:10px}
.side{display:grid;gap:28px}
.side .card{border-top:2px solid var(--ink);padding-top:14px}
.side .card h3{font-size:30px;text-transform:uppercase}
.side .card p{color:var(--muted);margin-top:6px}
.side .big{font-family:var(--display);font-weight:800;font-size:34px;text-decoration:none;display:block;margin-top:6px}
@media (max-width:860px){ .req{grid-template-columns:1fr} .two{grid-template-columns:1fr} }
@media (max-width:420px){ .checks{grid-template-columns:1fr} }

/* Chiusure */
.end-band{background:var(--cognac);color:#F6E9DD;padding-block:84px}
.end-band h2{color:#fff}
.end-band .sub{color:#F0D9C6}
.end-split{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:end}
@media (max-width:760px){ .end-split{grid-template-columns:1fr} }

/* ---------- Piè di pagina ---------- */
footer.site{background:#140D09;color:#A99A8C;font-size:15px;padding-block:56px 28px}
footer.site .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px}
footer.site .brand b{font-family:var(--display);font-weight:800;font-size:44px;color:#fff;display:block;line-height:.9;text-transform:uppercase}
footer.site h3{font-family:var(--body);font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--cognac-lt);margin-bottom:12px}
footer.site ul{list-style:none;display:grid;gap:6px}
footer.site a{text-decoration:none}
footer.site a:hover{color:#fff}
footer.site .legal{margin-top:36px;padding-top:16px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13px}
@media (max-width:760px){ footer.site .cols{grid-template-columns:1fr} }

/* ---------- Comparse ---------- */
.js .reveal{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none}
.js .hero h1 .w > span,.js .rise-in{transform:translateY(105%);animation:up 1s cubic-bezier(.2,.8,.2,1) forwards;animation-delay:var(--d,0ms)}
@keyframes up{to{transform:none}}
.js .fade-in{opacity:0;animation:fade 1.1s ease forwards;animation-delay:var(--d,0ms)}
@keyframes fade{to{opacity:1}}
@keyframes heroIn{to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{transform:none;transition:opacity .8s ease}
  .js .hero h1 .w > span,.js .rise-in{transform:none;animation:none}
  .js .hero .hide-art .outline{animation:none;stroke-dashoffset:0}
  .js .hero .hide-art .fillin,.js .hero .hide-art .tag{animation:none;opacity:1;transform:none}
  .hero .ticker div,.drum .spin{animation:none}
}

/* ---------- Tocco e tablet (iPhone, iPad) ---------- */
@media (pointer:coarse){
  nav.main a.lnk{padding-block:12px}
  .lang button{padding:12px 13px}
  .menu-btn{min-height:44px}
  .range-row input[type=range]{height:36px}
  .finishes button,.art-tabs button{min-height:44px}
}
@media (max-width:640px){
  .logo small{font-size:12px;letter-spacing:.1em}
  .specs dt,.article dt{font-size:12px}
  .checks small{font-size:13px}
}
/* la scena della lavorazione non viene più tagliata */
#process .scene{transition:background-color .2s linear}
/* iPad verticale */
@media (min-width:700px) and (max-width:900px){
  #process .stick{grid-template-rows:55% 45%}
  .pstep h3{font-size:54px}
  .pstep p{font-size:18px}
  .hero .grid{grid-template-columns:1.2fr .8fr;gap:24px}
  .hero h1{font-size:120px}
  .sampler{grid-template-columns:1fr 1fr;gap:24px}
  .hero-contact .grid{grid-template-columns:1.3fr .7fr}
}