/* ============================================================
   LUX LAB — SEZIONE AI v2 (buco nero oro)
   Design system: oro #c9962e / oro scuro #8a6314, nero profondo.
   Titoli Cormorant Garamond, body system-ui.
   Animazioni: solo transform/opacity. hover dietro @media(hover:hover).
   ============================================================ */

:root{
  --ai-gold:        #c9962e;
  --ai-gold-dark:   #8a6314;
  --ai-gold-soft:   #e3c068;
  --ai-black:       #060503;
  --ai-black-deep:  #010101;
}

/* ---------- 1. Blocco ancorato in home (statico, leggero) ---------- */
#cosa-puo-fare{
  position: relative;
  padding: 130px 24px 140px;
  background:
    radial-gradient(ellipse 120% 80% at 50% 50%, rgba(201,150,46,0.07), transparent 60%),
    var(--ai-black);
  color: #f3ede0;
  text-align: center;
  overflow: hidden;
}
#cosa-puo-fare .ai-intro-wrap{
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
#cosa-puo-fare .ai-eyebrow{
  display: inline-block;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .38em;
  text-transform: uppercase;
  color: var(--ai-gold);
  margin-bottom: 26px;
  opacity: .9;
}
#cosa-puo-fare .ai-intro-title{
  font-family: 'Cormorant Garamond', 'Playfair Display', serif;
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: .01em;
  margin: 0 0 28px;
  color: #faf6ec;
}
#cosa-puo-fare .ai-gold-line{
  width: 64px;
  height: 1px;
  margin: 0 auto 30px;
  background: linear-gradient(90deg, transparent, var(--ai-gold), transparent);
}
#cosa-puo-fare .ai-intro-lead{
  font-family: system-ui, -apple-system, sans-serif;
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.7;
  color: #c9c2b3;
  margin: 0 auto 44px;
  max-width: 600px;
}
#cosa-puo-fare .ai-intro-lead em{ color: var(--ai-gold-soft); font-style: italic; }

.ai-cta{
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ai-black);
  background: linear-gradient(135deg, var(--ai-gold-soft), var(--ai-gold) 55%, var(--ai-gold-dark));
  border: none;
  border-radius: 40px;
  padding: 18px 38px;
  cursor: pointer;
  transition: transform .35s cubic-bezier(.2,.7,.3,1), box-shadow .35s ease, opacity .25s ease;
  box-shadow: 0 8px 30px rgba(201,150,46,0.22);
}
.ai-cta .ai-arrow{ transition: transform .35s cubic-bezier(.2,.7,.3,1); }
@media (hover:hover){
  .ai-cta:hover{ transform: translateY(-3px); box-shadow: 0 14px 42px rgba(201,150,46,0.34); }
  .ai-cta:hover .ai-arrow{ transform: translateX(6px); }
}
.ai-cta:active{ transform: translateY(-1px); }
.ai-cta[disabled]{ opacity: .65; cursor: progress; }

/* ---------- 2. Overlay full-screen ---------- */
#ai-overlay{
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: var(--ai-black-deep);
  opacity: 0;
  visibility: hidden;
  transition: opacity .5s ease, visibility 0s linear .5s;
}
#ai-overlay.is-open{
  opacity: 1;
  visibility: visible;
  transition: opacity .5s ease, visibility 0s;
}
body.ai-overlay-open{ overflow: hidden; }

/* canvas host del buco nero (riempito da Three.js)
   piu' piccolo e in alto: occupa solo la fascia superiore, sotto resta spazio al testo.
   pointer-events:none -> le dita NON muovono il buco nero (ruota da solo). */
#ai-bh-stage{
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 60%;
  z-index: 1;
  pointer-events: none;
}
#ai-bh-stage canvas{ display:block; width:100%; height:100%; }

/* vignette + fondo nero (segue la fascia del canvas) */
#ai-vignette{
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 60%;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(circle at 50% 48%, transparent 40%, rgba(0,0,0,0.55) 100%);
}

/* scrim sfocato dietro il testo: fascia bassa scura cosi' i titoli oro
   non vanno in conflitto col disco e restano leggibili. */
.ai-textscrim{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 52%;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(to top,
    rgba(4,3,2,0.94) 0%,
    rgba(6,5,3,0.90) 28%,
    rgba(8,6,3,0.62) 62%,
    rgba(8,6,3,0.0) 100%);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  -webkit-mask-image: linear-gradient(to top, #000 70%, transparent 100%);
  mask-image: linear-gradient(to top, #000 70%, transparent 100%);
}

/* topbar: torna + brand */
.ai-topbar{
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 34px;
  pointer-events: none;
}
.ai-topbar > *{ pointer-events: auto; }
.ai-back-btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: #e8e0d0;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,150,46,0.30);
  border-radius: 30px;
  padding: 12px 22px;
  cursor: pointer;
  transition: transform .3s ease, border-color .3s ease, color .3s ease;
}
.ai-back-arrow{ transition: transform .3s ease; }
@media (hover:hover){
  .ai-back-btn:hover{ color: var(--ai-gold-soft); border-color: var(--ai-gold); }
  .ai-back-btn:hover .ai-back-arrow{ transform: translateX(-4px); }
}

/* CTA "Contattaci" nella topbar, accanto a Torna (lato destro) */
.ai-topbar-cta{
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ai-black);
  background: linear-gradient(135deg, var(--ai-gold-soft), var(--ai-gold) 55%, var(--ai-gold-dark));
  border-radius: 30px;
  padding: 12px 24px;
  text-decoration: none;
  box-shadow: 0 6px 22px rgba(201,150,46,0.22);
  transition: transform .3s ease, box-shadow .3s ease;
}
@media (hover:hover){
  .ai-topbar-cta:hover{ transform: translateY(-2px); box-shadow: 0 10px 30px rgba(201,150,46,0.32); }
}

/* ---------- 3. Branding LUX LAB (marchio alta moda) ---------- */
.ai-brandmark{
  position: absolute;
  top: 30px; left: 0; right: 0;
  z-index: 4;
  text-align: center;
  pointer-events: none;
}
.ai-brandmark .ai-bm-name{
  font-family: 'Cormorant Garamond', 'Playfair Display', serif;
  font-weight: 500;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  letter-spacing: .52em;
  text-indent: .52em;       /* compensa lo spacing finale per centratura ottica */
  color: var(--ai-gold-soft);
  text-shadow: 0 0 24px rgba(201,150,46,0.35);
}
.ai-brandmark .ai-bm-sub{
  margin-top: 4px;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: .58rem;
  letter-spacing: .42em;
  text-indent: .42em;
  text-transform: uppercase;
  color: rgba(227,192,104,0.55);
}

/* ---------- 4. Slide / pilastri ---------- */
.ai-slides{
  position: absolute;
  left: 0; right: 0;
  bottom: 92px;
  z-index: 5;
  text-align: center;
  padding: 0 28px;
  pointer-events: none;
}
.ai-slide{
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  padding: 0 28px;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .9s ease, transform .9s cubic-bezier(.2,.7,.3,1);
}
.ai-slide.is-active{
  opacity: 1;
  transform: translateY(0);
  position: relative;
  /* Il contenuto puo' superare lo spazio verticale (mobile, testi lunghi):
     rendi la slide attiva scrollabile invece di tagliarla. pointer-events:auto
     riabilita il tocco anche se .ai-slides e' pointer-events:none. */
  max-height: calc(100vh - 190px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  pointer-events: auto;
}
.ai-slide .ai-slide-kicker{
  font-family: system-ui, -apple-system, sans-serif;
  font-size: .64rem;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--ai-gold);
  margin-bottom: 14px;
}
.ai-slide .ai-slide-title{
  font-family: 'Cormorant Garamond', 'Playfair Display', serif;
  font-weight: 500;
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  line-height: 1.1;
  color: #faf6ec;
  margin: 0 0 16px;
  text-shadow: 0 2px 18px rgba(0,0,0,0.55);
}
.ai-slide .ai-slide-sub{
  font-family: system-ui, -apple-system, sans-serif;
  font-size: clamp(.95rem, 1.7vw, 1.12rem);
  line-height: 1.68;
  color: #d6cfbf;
  max-width: 660px;
  margin: 0 auto;
  text-shadow: 0 1px 10px rgba(0,0,0,0.5);
}

/* indicatori (puntini oro) */
.ai-dots{
  position: absolute;
  left: 0; right: 0;
  bottom: 48px;
  z-index: 6;
  display: flex;
  justify-content: center;
  gap: 28px;   /* 16px di pallino + 28 = 44px fra i centri: le aree di tocco si toccano senza sovrapporsi */
}
.ai-dot{
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 1px solid var(--ai-gold);
  background: transparent;
  padding: 0;
  cursor: pointer;
  position: relative;   /* riferimento per l'area di tocco ::after */
  transition: background .4s ease, transform .4s ease;
}
/* Area di tocco 44x44 senza toccare l'aspetto del pallino: pseudo-elemento
   trasparente centrato sul dot. Il pallino resta 9x9, cambia solo cosa e' cliccabile.
   Un background trasparente riceve comunque i pointer event (non e' pointer-events:none). */
.ai-dot::after{
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  width: 44px; height: 44px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: transparent;
}
/* Il dot attivo e' scale(1.15) e trascinerebbe con se' anche l'area di tocco (44 -> 50.6px),
   invadendo quella dei vicini: la scala viene annullata qui (1.15 x 0.8696 = 1). */
.ai-dot.is-active::after{ transform: translate(-50%, -50%) scale(.8696); }
.ai-dot.is-active{ background: var(--ai-gold); transform: scale(1.15); }
@media (hover:hover){ .ai-dot:hover{ background: rgba(201,150,46,0.5); } }

/* frecce precedente / successivo.
   Colore, bordo, raggio, hover e transizione arrivano tutti da .ai-back-btn (palette gold
   gia' in uso nella topbar): qui c'e' SOLO la geometria e l'area di tocco 44x44 per il mobile.
   Niente contain / will-change: .ai-textscrim qui sotto usa backdrop-filter (vincolo iOS). */
.ai-nav-btn{
  position: absolute;
  bottom: 30px;          /* stessa fascia dei dot (.ai-dots bottom:48px, dot 9px) */
  z-index: 7;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  justify-content: center;
  letter-spacing: 0;
  border-radius: 50%;
  font-size: 1.05rem;
}
.ai-nav-prev{ left: 24px; }
.ai-nav-next{ right: 24px; }

/* ---------- 5. Spinner oro (durante fetch Three) ---------- */
.ai-spinner{
  position: absolute;
  inset: 0;
  z-index: 7;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  background: var(--ai-black-deep);
  transition: opacity .5s ease;
}
.ai-spinner[hidden]{ display: none; }
.ai-spinner.is-fading{ opacity: 0; }
.ai-spinner-ring{
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 2px solid rgba(201,150,46,0.18);
  border-top-color: var(--ai-gold);
  animation: ai-spin .9s linear infinite;
}
.ai-spinner-label{
  font-family: system-ui, -apple-system, sans-serif;
  font-size: .68rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: rgba(227,192,104,0.7);
}
@keyframes ai-spin{ to{ transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce){
  .ai-spinner-ring{ animation-duration: 2s; }
  .ai-slide, #ai-overlay, .ai-cta{ transition-duration: .01ms; }
}

/* ---------- 6. Mobile ---------- */
@media (max-width: 820px){
  #cosa-puo-fare{ padding: 72px 20px 80px; } /* 2026-09-11: era 96/104, spazio vuoto verso #work e VIP */
  .ai-topbar{ padding: 16px 14px; }
  .ai-back-btn{ padding: 11px 18px; font-size: .72rem; letter-spacing: .14em; }
  .ai-topbar-cta{ padding: 11px 18px; font-size: .72rem; letter-spacing: .1em; }
  /* animazione piu' piccola e in alto, piu' spazio sotto per il testo */
  #ai-bh-stage, #ai-vignette{ height: 48%; }
  .ai-textscrim{ height: 62%; }
  .ai-brandmark{ top: 64px; }
  .ai-brandmark .ai-bm-name{ letter-spacing: .42em; text-indent: .42em; }
  .ai-slides{ bottom: 78px; }
  .ai-slide .ai-slide-sub{ font-size: .95rem; line-height: 1.6; }
  /* Su mobile un'area larga 44px invaderebbe le frecce prev/next (a 320px le aree
     partirebbero da 28px, la freccia sinistra arriva a 58px). L'altezza resta 44px,
     la larghezza scende a 31 -> fila di aree larga 186px, libera fino a 302px di viewport. */
  .ai-dots{ bottom: 40px; gap: 16px; }
  .ai-dot::after{ width: 31px; }
  .ai-nav-btn{ bottom: 22px; }
  .ai-nav-prev{ left: 14px; }
  .ai-nav-next{ right: 14px; }
}

/* ---------- 2026-09-11 frecce prev/next: su desktop a meta' altezza, ai lati dello
   schermo (prima stavano in basso accanto ai dot e non si notavano); su mobile
   nascoste (si naviga con swipe/dot). Nessun contain/will-change. ---------- */
@media (min-width: 769px){
  .ai-nav-btn{
    top: 50%;
    bottom: auto;
    margin-top: -26px;
    min-width: 52px;
    min-height: 52px;
    font-size: 1.25rem;
    border-color: rgba(201,150,46,0.55);
    background: rgba(0,0,0,0.45);
  }
  .ai-nav-prev{ left: 28px; }
  .ai-nav-next{ right: 28px; }
}
@media (max-width: 768px){
  .ai-nav-btn{ display: none; }
}