/* M-Pellet Experience — sistema grafico "Luce attraverso l'acciaio" (demo fase 1) */
@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:"JetBrains Mono";src:url("../fonts/jetbrains-mono.woff2") format("woff2");font-weight:400 700;font-display:swap}

:root{
  --void:#0c0c0d;          /* buio di scena */
  --graphite:#2e2e31;      /* grafite del logo */
  --steel:#1b1b1d;
  --steel-2:#252528;
  --line:rgba(244,244,242,.12);
  --ink:#f4f4f2;
  --muted:#a4a4a0;
  --dim:#6f6f6c;
  --yellow:#f2d20a;        /* quadrato del logo: unico colore di interfaccia */
  --yellow-ink:#141414;
  --display:"Archivo",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
  --gutter:clamp(16px,4vw,56px);
  --ease:cubic-bezier(.2,.7,.1,1);
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--void);color-scheme:dark}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
body{margin:0;background:var(--void);color:var(--ink);font:400 17px/1.6 var(--display);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0;padding:0}
h1,h2,h3,p{margin:0}
.mono{font-family:var(--mono);letter-spacing:-.01em}
.skip{position:absolute;left:-999px;top:8px;z-index:200;background:var(--yellow);color:var(--yellow-ink);padding:8px 14px}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--yellow);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- tipografia ---------- */
.kicker{font:600 12px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:12px}
.kicker::before{content:"";width:10px;height:10px;background:var(--yellow);flex:none}
.display{font-weight:850;font-stretch:118%;letter-spacing:-.035em;line-height:.92;text-wrap:balance}
.xl{font-size:clamp(44px,7vw,124px)}
.lg{font-size:clamp(38px,5.6vw,92px)}
.md{font-size:clamp(28px,3.4vw,54px)}
.lead{font-size:clamp(17px,1.35vw,21px);color:#d6d6d2;max-width:34ch;line-height:1.5}
.note{font:500 12px/1.5 var(--mono);color:var(--dim);max-width:60ch}
.name{font-weight:900;font-stretch:125%;letter-spacing:.02em;text-transform:uppercase;line-height:.8}
.line-mask{display:block;overflow:hidden;padding-bottom:.06em}
.line-mask>span{display:block}

/* ---------- barra superiore ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:50;display:flex;align-items:center;gap:28px;height:72px;padding:0 var(--gutter);transition:background .4s,backdrop-filter .4s,transform .5s var(--ease)}
.nav.is-solid{background:rgba(12,12,13,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav.is-hidden{transform:translateY(-100%)}
.brand{display:flex;align-items:center;gap:12px}
.brand svg{width:34px;height:33px}
.brand b{font-weight:900;font-stretch:125%;letter-spacing:.32em;font-size:13px}
.nav__links{display:flex;gap:26px;margin-left:auto;font-size:14px;color:#cfcfcb}
.nav__links a{position:relative;padding:6px 0}
.nav__links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--yellow);transition:right .35s var(--ease)}
.nav__links a:hover::after,.nav__links a[aria-current]::after{right:0}
.nav__b2b{font:600 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;border:1px solid var(--line);padding:11px 14px;transition:border-color .3s}
.nav__b2b:hover{border-color:var(--yellow)}
.cart{position:relative;width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line)}
.cart svg{width:20px;height:20px}
.cart span{position:absolute;top:-6px;right:-6px;min-width:20px;height:20px;padding:0 5px;background:var(--yellow);color:var(--yellow-ink);font:700 11px/20px var(--mono);text-align:center;transform:scale(0);transition:transform .4s var(--ease)}
.cart.has-items span{transform:scale(1)}
.burger{display:none}
@media (max-width:900px){
  .nav__links,.nav__b2b{display:none}
  .nav{height:62px;gap:12px}
  .nav .cart{margin-left:auto}
}

/* ---------- pulsanti ---------- */
.btn{white-space:nowrap;position:relative;display:inline-flex;align-items:center;gap:14px;height:56px;padding:0 26px;font-weight:700;font-size:15px;letter-spacing:.02em;overflow:hidden;isolation:isolate;transition:color .35s}
.btn svg{width:18px;height:18px;transition:transform .35s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn--solid{background:var(--yellow);color:var(--yellow-ink)}
.btn--solid::before{content:"";position:absolute;inset:0;background:var(--ink);transform:translateY(101%);transition:transform .45s var(--ease);z-index:-1}
.btn--solid:hover::before{transform:none}
.btn--ghost{border:1px solid rgba(244,244,242,.3)}
.btn--ghost::before{content:"";position:absolute;inset:0;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease);z-index:-1}
.btn--ghost:hover{color:var(--void)}
.btn--ghost:hover::before{transform:none}

/* ---------- barra demo ---------- */
.demo-pill{position:fixed;left:50%;bottom:16px;transform:translateX(-50%);z-index:60;display:flex;gap:10px;align-items:center;padding:9px 14px;background:rgba(20,20,21,.86);backdrop-filter:blur(10px);border:1px solid var(--line);font:500 11px/1.3 var(--mono);color:var(--muted);letter-spacing:.04em;max-width:calc(100vw - 32px)}
.demo-pill i{width:7px;height:7px;background:var(--yellow);flex:none;animation:blink 2s infinite}
/* acquisto sospeso (FIAMMA, ETNA): pulsanti visibili ma spenti, con nota esplicita */
.btn[data-acquisto]:disabled{background:transparent;color:var(--muted);border:1px dashed rgba(244,244,242,.28);cursor:not-allowed}
.btn[data-acquisto]:disabled::before{display:none}
.btn[data-acquisto]:disabled svg{opacity:.5}
.vendita-off{margin:0;font-size:12px;line-height:1.5;color:#cfcfcb;border-left:2px solid var(--yellow);padding:2px 0 2px 10px;max-width:46ch}
.vendita-off a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;white-space:nowrap;display:inline-block;padding:3px 0}
/* home, FIAMMA, ETNA: la nota sparisce appena si scorre e resta, fissa, nel footer */
.demo-pill--intro{transition:opacity .35s,visibility .35s}
.demo-pill--intro.is-away{opacity:0;visibility:hidden;pointer-events:none}
.foot__demo{grid-column:1/-1;display:flex;gap:10px;align-items:baseline;margin:8px 0 0;padding-top:20px;border-top:1px solid var(--line);font-size:12px;line-height:1.5;color:#b4b4b0;letter-spacing:.03em}
.foot__demo i{width:7px;height:7px;background:var(--yellow);flex:none;transform:translateY(-1px)}
@keyframes blink{50%{opacity:.25}}
.toast{position:fixed;left:50%;top:84px;transform:translate(-50%,-20px);opacity:0;z-index:70;padding:14px 18px;background:var(--ink);color:var(--void);font-weight:600;font-size:14px;transition:.4s var(--ease);pointer-events:none;max-width:calc(100vw - 32px)}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- canvas di scena ---------- */
.stage{position:fixed;inset:0;width:100%;height:100vh;height:100lvh;z-index:0}
.stage canvas{width:100%;height:100%}
.stage canvas.is-drag{cursor:grabbing}
.stage-fallback{position:absolute;inset:0;display:none;place-items:center;background:radial-gradient(60% 50% at 60% 55%,#2a1a10 0%,var(--void) 70%)}
.stage-fallback img{max-height:78vh;width:auto}
.no-webgl .stage-fallback{display:grid}
.vignette{position:fixed;inset:0;pointer-events:none;z-index:1;background:radial-gradient(120% 90% at 50% 50%,transparent 55%,rgba(0,0,0,.55) 100%)}
.content{position:relative;z-index:2}

/* ---------- transizione "taglio laser" ---------- */
.laser{position:relative;height:1px;overflow:visible}
.laser::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--yellow) 30%,#fff 50%,var(--yellow) 70%,transparent);transform:scaleX(var(--cut,0));transform-origin:left;box-shadow:0 0 18px 2px rgba(242,210,10,.55)}

/* ---------- footer ---------- */
.foot{position:relative;z-index:2;background:#09090a;border-top:1px solid var(--line);padding:72px var(--gutter) 96px;display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;font-size:14px;color:var(--muted)}
.foot .brand{margin-bottom:18px}
.foot h3,.foot h4{margin:0 0 12px;font:600 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--ink)}
.foot a:hover{color:var(--ink)}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.foot ul a{display:inline-block;padding:4px 0;min-height:24px} /* area di tocco minima 24 px */
@media (max-width:760px){.foot{grid-template-columns:1fr;padding-bottom:120px}}

@media (max-width:760px){.demo-pill{top:68px;bottom:auto;font-size:10px;padding:7px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;width:calc(100vw - 32px);text-align:center}.demo-pill i{display:inline-block;margin-right:6px;vertical-align:middle}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}