:root{
  --carbone:#141311;
  --ambra:#f0a500;
  --ambra-chiara:#ffc432;
  --crema:#ede7da;
  --crema-dim:#b8b0a0;
  --display:"Big Shoulders Display",Impact,sans-serif;
  --body:"Schibsted Grotesk",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--body);background:var(--carbone);color:var(--crema);overflow-x:hidden}
.skip-link{position:absolute;top:-3rem;left:1rem;z-index:1000;background:var(--ambra);color:var(--carbone);padding:.6rem 1rem;font-weight:700;text-decoration:none;transition:top .2s}
.skip-link:focus{top:1rem}
:focus-visible{outline:3px solid var(--ambra);outline-offset:3px}

.topbar{
  position:fixed;inset:0 0 auto;z-index:50;display:flex;align-items:center;gap:1rem;
  padding:.8rem clamp(1rem,4vw,3rem);background:linear-gradient(rgba(20,19,17,.92),transparent);
}
.topbar__logo{font-family:var(--display);font-weight:900;font-size:1.6rem;color:var(--crema);text-decoration:none;letter-spacing:.04em}
.topbar__logo span{color:var(--ambra)}
.topbar__tag{font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;color:var(--crema-dim)}
@media (max-width:600px){.topbar__tag{display:none}}

.progress{position:fixed;inset:0 0 auto;height:4px;z-index:60;background:rgba(240,165,0,.15)}
.progress span{display:block;height:100%;width:0;background:var(--ambra)}

/* ---------- scena sticky ---------- */
.stage{height:520vh;position:relative}
.scene{position:sticky;top:0;height:100svh;display:grid;place-items:center;overflow:hidden}
#trailer{width:min(92vw,1050px);max-height:82svh}

/* linee CAD: si disegnano via dashoffset (JS) */
.ln{
  fill:none;stroke:var(--ambra);stroke-width:2;vector-effect:non-scaling-stroke;
  stroke-dasharray:1;stroke-dashoffset:1;stroke-linecap:round;stroke-linejoin:round;
}
.ln.thin{stroke-width:1;stroke-opacity:.8}
.dimtxt,.cartxt{
  font-family:var(--body);fill:var(--ambra);opacity:0;transition:opacity .4s;
}
.dimtxt{font-size:15px;letter-spacing:.12em}
.cartxt{font-size:12px;letter-spacing:.08em;text-transform:uppercase}
#blueprint.on .dimtxt,#blueprint.on .cartxt{opacity:.9}

/* ---------- atti ---------- */
.acts{position:absolute;left:clamp(1rem,4vw,3.2rem);bottom:clamp(1.2rem,5vh,3rem);max-width:24rem}
.act{
  position:absolute;bottom:0;left:0;opacity:0;transform:translateY(14px);
  transition:opacity .45s ease,transform .45s ease;pointer-events:none;width:max-content;max-width:78vw;
}
.act.on{opacity:1;transform:none}
.act em{
  font-style:normal;font-family:var(--display);font-weight:900;font-size:1.1rem;
  color:transparent;-webkit-text-stroke:1.5px var(--ambra);margin-right:.4rem;
}
.act{font-family:var(--display);font-weight:900;font-size:clamp(1.6rem,4vw,2.6rem);text-transform:uppercase;line-height:1}
.act span{
  display:block;font-family:var(--body);font-weight:400;text-transform:none;
  font-size:.95rem;color:var(--crema-dim);margin-top:.45rem;line-height:1.5;
}
.hint{
  position:absolute;bottom:1.4rem;left:50%;translate:-50% 0;font-size:.8rem;letter-spacing:.25em;
  text-transform:uppercase;color:var(--ambra);animation:hint-pulse 2s ease-in-out infinite;
  transition:opacity .4s;
}
.hint.off{animation:none;opacity:0;visibility:hidden}
@keyframes hint-pulse{0%,100%{opacity:.45}50%{opacity:1}}

/* ---------- chiusura ---------- */
.fine{min-height:70svh;display:grid;place-content:center;text-align:center;gap:1rem;padding:4rem 1.5rem}
.fine h2{font-family:var(--display);font-weight:900;text-transform:uppercase;font-size:clamp(2.6rem,8vw,5rem);line-height:.95}
.fine p{color:var(--crema-dim);font-size:1.1rem}
.fine__actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:1.4rem}
.btn-solid,.btn-ghost{
  font-family:var(--display);font-weight:900;text-transform:uppercase;font-size:1.1rem;letter-spacing:.06em;
  text-decoration:none;padding:.85rem 1.7rem;border:2px solid var(--ambra);
  transition:transform .18s,background .18s,box-shadow .18s;
}
.btn-solid{background:var(--ambra);color:var(--carbone)}
.btn-solid:hover{background:var(--ambra-chiara);transform:translateY(-2px);box-shadow:0 10px 28px rgba(240,165,0,.35)}
.btn-ghost{color:var(--crema)}
.btn-ghost:hover{background:rgba(240,165,0,.12);transform:translateY(-2px)}

/* ---------- no-js / reduced motion: stato finale statico ---------- */
.no-js .stage{height:auto}
.no-js .ln{stroke-dashoffset:0}
.no-js .hint{display:none}
@media (prefers-reduced-motion:reduce){
  .hint{animation:none}
}