/* ==========================================================
   3DG Software - stile nuovo (prototipo della home, 23/09/2026)
   Nero profondo, bianco caldo, rosso come accento e come luce.
   Le altre pagine usano ancora style.css.
   ========================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --fondo:        #06070b;
  --fondo-2:      #0c0d12;
  --superficie:   #111218;
  --superficie-2: #171820;
  --riga:         rgba(255,255,255,.08);
  --riga-forte:   rgba(255,255,255,.16);
  --testo:        #eeece8;
  --testo-2:      #b3b0aa;
  --testo-3:      #807d78;
  --rosso:        #ff2e3c;
  --rosso-scuro:  #d8131f;
  --freddo:       #a9bcff;
  --mono:         ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
  --larghezza:    1240px;
  --margine:      clamp(16px, 4vw, 40px);
  --raggio:       14px;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  background: var(--fondo);
  color: var(--testo);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }

.contenitore {
  width: 100%;
  max-width: calc(var(--larghezza) + 2 * var(--margine));
  margin: 0 auto;
  padding: 0 var(--margine);
}

.occhiello {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--rosso);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.occhiello::before {
  content: "";
  width: 22px; height: 1px;
  background: currentColor;
}

/* ---------------------------------------------------- bottoni */
.bottone {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: -.005em;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background .2s, border-color .2s, color .2s, box-shadow .2s, transform .2s;
}
.bottone-pieno {
  background: var(--rosso);
  color: #fff;
  box-shadow: 0 0 0 0 rgba(255,46,60,0), 0 10px 30px -10px rgba(255,46,60,.6);
}
.bottone-pieno:hover { background: #ff4452; box-shadow: 0 0 0 4px rgba(255,46,60,.18), 0 14px 36px -10px rgba(255,46,60,.8); }
.bottone-vuoto {
  background: rgba(255,255,255,.04);
  color: var(--testo);
  border-color: var(--riga-forte);
  backdrop-filter: blur(8px);
}
.bottone-vuoto:hover { border-color: rgba(255,255,255,.4); background: rgba(255,255,255,.08); }
.bottone-piccolo { padding: 8px 16px; font-size: .85rem; }
.bottone:focus-visible, a:focus-visible { outline: 2px solid var(--rosso); outline-offset: 3px; }

/* ---------------------------------------------------- intestazione */
.testata {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: linear-gradient(to bottom, rgba(6,7,11,.85), rgba(6,7,11,0));
  transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.testata.scorsa {
  background: rgba(6,7,11,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--riga);
}
.testata-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Il marchio e' un segnaposto: si sostituisce qui e nel fondo pagina */
.marchio { display: inline-flex; align-items: baseline; gap: 8px; line-height: 1; }
.marchio-sigla {
  font-weight: 800;
  font-size: 1.45rem;
  letter-spacing: -.04em;
  color: #fff;
}
.marchio-sigla::after { content: ""; display: inline-block; width: 6px; height: 6px; margin-left: 3px; background: var(--rosso); border-radius: 50%; box-shadow: 0 0 10px var(--rosso); }
.marchio-sotto {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--testo-2);
}

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a { font-size: .92rem; color: var(--testo-2); transition: color .2s; }
.nav-links a:hover { color: #fff; }
.lingue { display: flex; flex-wrap: wrap; gap: 2px; padding: 3px; border: 1px solid var(--riga-forte); border-radius: 999px; }
.lingue a { font-family: var(--mono); font-size: .68rem; padding: 4px 7px; border-radius: 999px; }
.lingue a.lingua-attiva { background: var(--testo); color: var(--fondo); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  background: none;
  border: 1px solid var(--riga-forte);
  border-radius: 50%;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span { width: 16px; height: 1.5px; background: var(--testo); transition: transform .25s; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ---------------------------------------------------- banner d'apertura */
.banner {
  position: relative;
  min-height: min(92vh, 900px);
  display: flex;
  align-items: stretch;
  overflow: hidden;
  background: var(--fondo);
  isolation: isolate;
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}
/* il velo scurisce dove sta il testo, e sfuma il banner nel resto della pagina */
.banner-velo {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(6,7,11,.92) 0%, rgba(6,7,11,.6) 32%, rgba(6,7,11,0) 58%),
    linear-gradient(to top, var(--fondo) 0%, rgba(6,7,11,0) 22%);
}
.banner-in {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 7fr);
  align-items: end;
  max-width: calc(1560px + 2 * var(--margine));
  gap: 24px;
  padding-top: 120px;
  padding-bottom: 72px;
}
.hero-stage { align-self: stretch; min-height: 520px; }

.banner-testo { max-width: 680px; padding-bottom: 8px; position: relative; z-index: 1; }
.banner h1 {
  font-size: clamp(2.5rem, 5.6vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -.045em;
  font-weight: 750;
  margin-bottom: 24px;
}
.banner h1 em {
  font-style: normal;
  background: linear-gradient(95deg, #fff 0%, #ffb3b8 30%, var(--rosso) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.banner-sotto { font-size: 1.12rem; color: var(--testo-2); max-width: 480px; margin-bottom: 34px; }
.azioni { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.banner-programmi { font-family: var(--mono); font-size: .78rem; letter-spacing: .06em; color: var(--testo); }
.banner-programmi span { color: var(--testo-3); }

/* ---------------------------------------------------- i fatti */
.fatti { border-top: 1px solid var(--riga); border-bottom: 1px solid var(--riga); background: var(--fondo-2); }
.fatti-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.fatti-in li { padding: 30px 24px; border-left: 1px solid var(--riga); display: flex; flex-direction: column; gap: 4px; }
.fatti-in li:first-child { border-left: 0; padding-left: 0; }
.fatti-in strong { font-size: 1.6rem; font-weight: 700; letter-spacing: -.03em; }
.fatti-in span { font-size: .9rem; color: var(--testo-2); line-height: 1.4; }

/* ---------------------------------------------------- sezioni */
.sezione { padding: clamp(80px, 11vw, 140px) 0; position: relative; }
.sezione-scura { background: var(--fondo-2); border-top: 1px solid var(--riga); border-bottom: 1px solid var(--riga); }
/* la griglia sottile che richiama il banner */
.sezione-scura::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(169,188,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(169,188,255,.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 65%);
  pointer-events: none;
}
.sezione > .contenitore { position: relative; }
.sezione-testa { max-width: 680px; margin-bottom: 56px; }
.sezione-testa h2 {
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -.04em;
  font-weight: 720;
  margin-bottom: 18px;
}
.sezione-testa p:not(.occhiello) { color: var(--testo-2); font-size: 1.08rem; }

/* ---------------------------------------------------- come funziona */
.passi { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.passi li { display: flex; flex-direction: column; gap: 12px; }
.passo-visivo {
  aspect-ratio: 16 / 10;
  border: 1px solid var(--riga);
  border-radius: var(--raggio);
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,46,60,.14), transparent 55%),
    linear-gradient(rgba(169,188,255,.05) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, rgba(169,188,255,.05) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--superficie);
}
.passo-visivo span {
  position: absolute;
  left: 22px; bottom: 14px;
  font-family: var(--mono);
  font-size: 3.2rem;
  font-weight: 600;
  letter-spacing: -.04em;
  color: rgba(255,255,255,.08);
}
.passo-visivo img, .passo-visivo video { width: 100%; height: 100%; object-fit: cover; display: block; }
.passi h3 { font-size: 1.3rem; font-weight: 680; letter-spacing: -.025em; }
.passi p { color: var(--testo-2); }

/* ---------------------------------------------------- funzioni */
.funzioni { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--riga-forte); }
.gruppo { padding: 30px 26px 0; }
.gruppo:first-child { padding-left: 0; }
.gruppo + .gruppo { border-left: 1px solid var(--riga); }
.gruppo h3 { font-family: var(--mono); font-size: .76rem; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--rosso); margin-bottom: 20px; }
.gruppo ul { display: flex; flex-direction: column; gap: 14px; }
.gruppo li { font-size: .95rem; line-height: 1.5; color: var(--testo); padding-left: 18px; position: relative; }
.gruppo li::before { content: ""; position: absolute; left: 0; top: .7em; width: 8px; height: 1px; background: var(--rosso); }
.pf {
  display: inline-block;
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--freddo);
  border: 1px solid rgba(169,188,255,.3);
  padding: 1px 6px;
  border-radius: 999px;
  margin-left: 4px;
  vertical-align: 2px;
  white-space: nowrap;
}
.sezione-testa strong { color: var(--testo); font-weight: 600; }

/* ---------------------------------------------------- programmi */
.programmi { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.programma {
  padding: 32px;
  border: 1px solid var(--riga);
  border-radius: var(--raggio);
  background: var(--superficie);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}
.programma::before {
  content: "";
  position: absolute;
  top: 0; left: 32px;
  width: 40px; height: 1px;
  background: var(--rosso);
  box-shadow: 0 0 12px var(--rosso);
}
.programma-stato { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: #6fe3a1; }
.programma-presto { background: transparent; border-style: dashed; }
.programma-presto::before { background: var(--testo-3); box-shadow: none; }
.programma-presto .programma-stato { color: var(--testo-3); }
.programma h3 { font-size: 1.8rem; font-weight: 720; letter-spacing: -.035em; line-height: 1.1; }
.programma h3 span { color: var(--testo-3); }
.programma-versioni { font-family: var(--mono); font-size: .82rem; color: var(--testo-2); margin-bottom: 8px; }
.programma > p:last-child { color: var(--testo-2); font-size: .95rem; }
.nota-sezione { margin-top: 28px; }
.nota-sezione a { font-weight: 600; font-size: .95rem; border-bottom: 1px solid var(--riga-forte); padding-bottom: 2px; transition: border-color .2s, color .2s; }
.nota-sezione a:hover { color: #fff; border-color: var(--rosso); }

/* ---------------------------------------------------- il metodo */
.principi { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--riga-forte); }
.principi li { padding: 32px 28px 8px; position: relative; }
.principi li:first-child { padding-left: 0; }
.principi li + li { border-left: 1px solid var(--riga); }
.principio-n { font-family: var(--mono); font-size: .78rem; color: var(--rosso); display: block; margin-bottom: 26px; }
.principi li::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 40px; height: 1px;
  background: var(--rosso);
  box-shadow: 0 0 12px var(--rosso);
}
.principi li + li::before { left: 28px; }
.principi h3 { font-size: 1.2rem; letter-spacing: -.02em; font-weight: 650; margin-bottom: 12px; line-height: 1.3; }
.principi p { color: var(--testo-2); font-size: .96rem; }

/* ---------------------------------------------------- prezzo */
.listino { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 8fr); gap: 20px; align-items: stretch; }
.listino-prezzo {
  padding: 40px;
  border-radius: var(--raggio);
  border: 1px solid rgba(255,46,60,.35);
  background:
    radial-gradient(circle at 100% 0%, rgba(255,46,60,.2), transparent 60%),
    var(--superficie);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.listino-nome { font-family: var(--mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--testo-2); }
.listino-cifra { font-size: clamp(3.4rem, 6vw, 4.6rem); font-weight: 760; letter-spacing: -.05em; line-height: 1; margin-top: 8px; }
.listino-nota { color: var(--testo-2); font-size: .92rem; margin-bottom: 26px; }
.listino-azioni { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.listino-azioni .bottone { width: 100%; }
.listino-piccolo { font-size: .85rem; color: var(--testo-3); margin-top: auto; }
.listino-piccolo a { color: var(--testo-2); border-bottom: 1px solid var(--riga-forte); }
.bottone.in-attesa { cursor: default; opacity: .72; box-shadow: none; }
.bottone.in-attesa small { white-space: nowrap; flex: none; font-family: var(--mono); font-size: .66rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; padding: 2px 7px; border-radius: 999px; background: rgba(0,0,0,.25); }
.listino .garanzie { grid-template-columns: repeat(2, 1fr); }
.listino .garanzie li { padding: 28px; }

/* ---------------------------------------------------- garanzie */
.garanzie { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--riga); border: 1px solid var(--riga); border-radius: var(--raggio); overflow: hidden; }
.garanzie li { background: var(--fondo); padding: 36px 32px; transition: background .25s; }
.garanzie li:hover { background: var(--superficie); }
.garanzie svg { width: 28px; height: 28px; fill: none; stroke: var(--rosso); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 22px; }
.garanzie h3 { font-size: 1.08rem; font-weight: 650; letter-spacing: -.015em; margin-bottom: 8px; }
.garanzie p { font-size: .94rem; color: var(--testo-2); }
.garanzie a { color: var(--testo); border-bottom: 1px solid var(--riga-forte); }
.garanzie a:hover { border-color: var(--rosso); }

/* ---------------------------------------------------- chiusura */
.chiusura { padding: clamp(72px, 9vw, 110px) 0; background: radial-gradient(ellipse at 80% 50%, rgba(255,46,60,.14), transparent 60%); }
.chiusura-in { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.chiusura h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); letter-spacing: -.035em; font-weight: 720; line-height: 1.15; margin-bottom: 8px; }
.chiusura p { color: var(--testo-2); }

/* ---------------------------------------------------- fondo pagina */
.piede { border-top: 1px solid var(--riga); padding: 72px 0 40px; background: var(--fondo); }
.piede-colonne { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid var(--riga); }
.piede-marchio p { color: var(--testo-3); font-size: .9rem; margin-top: 16px; }
.piede h4 { font-family: var(--mono); font-size: .72rem; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--testo-3); margin-bottom: 16px; }
.piede ul { display: flex; flex-direction: column; gap: 10px; }
.piede ul a { font-size: .92rem; color: var(--testo-2); transition: color .2s; overflow-wrap: anywhere; }
.piede ul a:hover { color: #fff; }
.piede-marchi { font-size: .76rem; color: var(--testo-3); line-height: 1.6; margin-top: 32px; max-width: 900px; }
.piede-legale { font-size: .8rem; color: var(--testo-3); margin-top: 14px; }

/* ---------------------------------------------------- cookie */
.cookie-banner {
  position: fixed;
  left: 16px; bottom: 16px;
  z-index: 60;
  max-width: 420px;
  display: none;
  align-items: center;
  gap: 16px;
  padding: 14px 16px 14px 20px;
  background: rgba(17,18,24,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--riga-forte);
  border-radius: 14px;
  box-shadow: 0 20px 50px -20px rgba(0,0,0,.8);
}
.cookie-banner.visible { display: flex; }
.cookie-banner p { font-size: .8rem; color: var(--testo-2); line-height: 1.45; }
.cookie-banner a { color: var(--testo); text-decoration: underline; text-underline-offset: 2px; }

/* ---------------------------------------------------- schermi medi */
@media (max-width: 1080px) {
  .principi { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .principi li:nth-child(3) { padding-left: 0; border-left: 0; }
  .principi li:nth-child(3)::before { left: 0; }
  .garanzie { grid-template-columns: repeat(2, 1fr); }
  .piede-colonne { grid-template-columns: 1fr 1fr; }
  .funzioni { grid-template-columns: repeat(2, 1fr); }
  .gruppo:nth-child(3) { padding-left: 0; border-left: 0; }
  .gruppo:nth-child(n+3) { margin-top: 36px; }
  .programmi { grid-template-columns: 1fr 1fr; }
  .programma-presto { grid-column: 1 / -1; }
  .listino { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------- telefono */
@media (max-width: 820px) {
  body { font-size: 16px; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px var(--margine) 24px;
    background: rgba(6,7,11,.97);
    border-bottom: 1px solid var(--riga);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links > li > a { display: block; padding: 14px 0; border-bottom: 1px solid var(--riga); font-size: 1rem; }
  .lingue { margin-top: 18px; width: auto !important; }

  /* il banner: l'animazione in alto, il testo sotto */
  .banner { min-height: 0; }
  .banner-in { grid-template-columns: 1fr; padding-top: 72px; padding-bottom: 56px; gap: 0; }
  .hero-stage { order: -1; min-height: 0; height: 96vw; max-height: 520px; margin-bottom: 8px; }
  .banner-velo { background: linear-gradient(to top, var(--fondo) 0%, rgba(6,7,11,.9) 42%, rgba(6,7,11,0) 62%); }

  .fatti-in { grid-template-columns: 1fr 1fr; }
  .fatti-in li { padding: 22px 16px; }
  .fatti-in li:nth-child(odd) { border-left: 0; padding-left: 0; }
  .fatti-in li:nth-child(n+3) { border-top: 1px solid var(--riga); }
  .fatti-in strong { font-size: 1.3rem; }

  .passi { grid-template-columns: 1fr; gap: 36px; }
  .funzioni { grid-template-columns: 1fr; }
  .gruppo, .gruppo + .gruppo, .gruppo:nth-child(3) { padding: 28px 0 0; border-left: 0; margin-top: 0; }
  .gruppo + .gruppo { border-top: 1px solid var(--riga); margin-top: 28px; }
  .programmi { grid-template-columns: 1fr; }
  .programma { padding: 26px; }
  .listino-prezzo { padding: 28px 24px; }
  .listino .garanzie { grid-template-columns: 1fr; }
  .listino .garanzie li { padding: 24px; }

  .principi { grid-template-columns: 1fr; }
  .principi li, .principi li + li { padding: 28px 0 0; margin: 0; border-left: 0; }
  .principi li + li { border-top: 1px solid var(--riga); }
  .principi li::before, .principi li + li::before { left: 0; }

  .garanzie { grid-template-columns: 1fr; }
  .garanzie li { padding: 28px 24px; }


  .piede-colonne { grid-template-columns: 1fr; gap: 32px; }
  .cookie-banner { right: 16px; max-width: none; }
}

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

/* La casella dei termini accanto all'acquisto (24/09/2026): vedi style.css. */
.accetta-termini { display: flex; gap: 10px; align-items: flex-start; margin-top: 14px; font-size: .85rem; line-height: 1.5; color: var(--testo-3); cursor: pointer; }
.accetta-termini input { margin-top: 3px; accent-color: var(--rosso); flex: none; }
.accetta-termini a { color: var(--testo-2); border-bottom: 1px solid var(--riga-forte); }
.termini-mancanti .accetta-termini { color: var(--rosso); }