/* ============ VETRO LIMEN ============
   Un solo materiale per tutto ciò che galleggia sopra la pagina: menu, selettore della lingua,
   menu del telefono, schede che si aprono, pulsanti secondari e didascalie dei progetti.
   È vetro smerigliato: lascia passare, sfocata, la luce della soglia che scorre dietro,
   ha un filo di luce sul bordo alto e un riflesso che segue il puntatore (vetro.js).
   Caricato dopo gli stili della pagina: sovrascrive solo l'aspetto, non la struttura.
   Per tornare indietro basta togliere il <link> a questo file e lo <script> vetro.js. */
:root{
  --g-fill:rgba(6,16,12,.38);
  --g-fill-hi:rgba(4,12,9,.66);
  --g-tint:linear-gradient(180deg,rgba(225,255,240,.075),rgba(225,255,240,.018) 52%,rgba(225,255,240,.035));
  --g-edge:rgba(210,255,234,.13);
  --g-hi:rgba(255,255,255,.10);
  --g-blur:blur(22px) saturate(175%);
  --g-drop:0 22px 44px -22px rgba(0,0,0,.9),0 3px 10px -4px rgba(0,0,0,.55);
}

/* il filo di luce: bordo più chiaro in alto che si spegne verso il basso, con un riflesso verde dove passa la soglia */
.nav::after,.lp::after,.mm-in::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,.26),rgba(255,255,255,.05) 38%,rgba(61,245,168,.07) 100%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box exclude,linear-gradient(#000 0 0)}
/* il riflesso al puntatore */
.nav::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:-1;
  background:radial-gradient(240px circle at var(--mx,50%) var(--my,-80%),rgba(220,255,238,.11),transparent 62%);opacity:var(--spot,0);transition:opacity .6s}

/* ============ MENU: una capsula di vetro sospesa ============ */
.nav{top:calc(12px + env(safe-area-inset-top,0px));left:max(14px,var(--gl));right:max(14px,var(--gr));max-width:1280px;margin:0 auto;gap:26px;
  padding:7px 7px 7px 24px;border:0;border-radius:999px;isolation:isolate;
  background:var(--g-tint),var(--g-fill);-webkit-backdrop-filter:var(--g-blur);backdrop-filter:var(--g-blur);
  box-shadow:inset 0 1px 0 var(--g-hi),var(--g-drop);
  transform:translateY(calc(-100% - 44px));
  transition:transform 1.4s var(--ease) .9s,background .6s,top .7s var(--ease),padding .7s var(--ease),max-width .9s var(--ease)}
/* scorrendo, la capsula si stringe un poco e si scurisce, così il testo resta leggibile su qualsiasi sezione */
.nav.sc{top:calc(8px + env(safe-area-inset-top,0px));max-width:1180px;padding:6px 6px 6px 22px;background:var(--g-tint),var(--g-fill-hi);border:0}
.nav .prog{left:30px;right:30px;bottom:0;opacity:.7}
.brand{width:108px}

/* voci del menu: una goccia di vetro scivola sotto la voce indicata o sotto la sezione in cui siete */
.nav ul{position:relative;isolation:isolate;gap:2px;font-size:14.5px}
.nav ul li:not(.goccia){display:flex}
.nav ul a{padding:10px 15px;border-radius:999px}
.nav ul a::after{content:none}
.nav ul .goccia{position:absolute;left:0;top:0;bottom:0;width:var(--pw,0);transform:translateX(var(--pl,0));z-index:-1;border-radius:999px;pointer-events:none;opacity:0;
  background:linear-gradient(180deg,rgba(225,255,240,.11),rgba(225,255,240,.035));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),inset 0 0 0 1px rgba(210,255,234,.07),0 4px 12px -6px rgba(0,0,0,.6);
  transition:transform .6s var(--ease),width .6s var(--ease),opacity .4s}
.nav ul .goccia.g-on{opacity:1}
/* la sezione attuale ha anche un punto di luce, come un led */
.nav ul .goccia::after{content:"";position:absolute;left:50%;bottom:4px;width:3px;height:3px;margin-left:-1.5px;border-radius:50%;background:var(--beam);box-shadow:0 0 6px var(--beam);opacity:0;transition:opacity .4s}
.nav ul .goccia.g-cur::after{opacity:1}
html:not(.js) .nav ul a.here{background:rgba(225,255,240,.08)}

/* ============ SELETTORE LINGUA: un interruttore incassato nel vetro ============ */
.lang{gap:0;padding:3px;border-radius:999px;background:rgba(0,0,0,.3);box-shadow:inset 0 1px 2px rgba(0,0,0,.55),inset 0 0 0 1px rgba(210,255,234,.07),0 1px 0 rgba(255,255,255,.04)}
/* la spaziatura delle lettere lascia un vuoto dopo l'ultima: il padding a destra lo compensa, così la sigla è al centro */
.lang a{padding:8px calc(11px - .14em) 8px 11px;border-radius:999px;transition:color .3s,background .4s,box-shadow .4s}
.lang a:hover{color:var(--ink);background:rgba(225,255,240,.04)}
.lang a[aria-current]{color:var(--beam);background:linear-gradient(180deg,rgba(225,255,240,.13),rgba(225,255,240,.045));box-shadow:inset 0 1px 0 rgba(255,255,255,.13),0 2px 8px -3px rgba(0,0,0,.7);text-shadow:0 0 12px rgba(61,245,168,.45)}
.nav .lang{margin-left:-8px}

/* il pulsante nel menu: pieno, chiaro, l'unico punto opaco della capsula */
.nav .btn.cta{min-height:44px;padding:0 22px;background:var(--ink);border-color:var(--ink);color:var(--onbeam);box-shadow:inset 0 1px 0 #fff,0 6px 16px -8px rgba(0,0,0,.8)}
.mb{width:44px;height:44px;border:0;background:linear-gradient(180deg,rgba(225,255,240,.1),rgba(225,255,240,.03));box-shadow:inset 0 1px 0 rgba(255,255,255,.12),inset 0 0 0 1px rgba(210,255,234,.1);transition:background .4s}
.mb:active{transform:scale(.95)}
@media(max-width:1020px){.nav{padding:7px 7px 7px 20px;gap:12px}.nav.sc{padding:6px 6px 6px 18px}}

/* ============ MENU DEL TELEFONO: la pagina resta dietro, sfocata ============ */
.mm{background:radial-gradient(ellipse 70% 50% at 50% 0,rgba(61,245,168,.07),transparent 70%),rgba(1,6,4,.6);-webkit-backdrop-filter:blur(30px) saturate(160%);backdrop-filter:blur(30px) saturate(160%);
  justify-content:flex-start;padding:calc(104px + env(safe-area-inset-top,0px)) max(14px,var(--gr)) max(24px,env(safe-area-inset-bottom,0px)) max(14px,var(--gl));overflow-y:auto}
.mm-in{position:relative;display:flex;flex-direction:column;padding:14px 10px 22px;border-radius:28px;isolation:isolate;
  background:var(--g-tint),rgba(8,20,15,.4);box-shadow:inset 0 1px 0 var(--g-hi),var(--g-drop);
  opacity:0;transform:translateY(-10px) scale(.98);transition:opacity .5s,transform .8s var(--ease)}
.menu .mm-in{opacity:1;transform:none}
.mm .mm-in>a{display:flex;align-items:center;justify-content:space-between;padding:6px 14px;border-radius:16px;font-size:clamp(28px,8vw,40px);transition:opacity .5s,transform .7s var(--ease),background .3s}
.mm .mm-in>a::after{content:"";width:7px;height:7px;border-top:1.5px solid var(--dim);border-right:1.5px solid var(--dim);transform:rotate(45deg);margin-right:6px;opacity:.7}
.mm .mm-in>a+a{background:linear-gradient(rgba(210,255,234,.07),rgba(210,255,234,.07)) 14px 0/calc(100% - 28px) 1px no-repeat}
.mm .mm-in>a:active,.mm .mm-in>a[aria-current]{background-color:rgba(225,255,240,.06)}
.mm .mail{margin:22px 14px 0}
.mm .lang{align-self:flex-start;margin:18px 14px 0}
.mm .lang a{font:500 14px/1 var(--fd);letter-spacing:.14em;padding:13px calc(18px - .14em) 13px 18px}

@media(max-width:420px){.nav{left:12px;right:12px}.brand{width:98px}.mm{padding-left:12px;padding-right:12px}}

/* ============ SCHEDE: prima chiamata gratuita, offerte ============ */
.lp{isolation:isolate;border:0;background:var(--g-tint),var(--g-fill-hi);-webkit-backdrop-filter:blur(28px) saturate(170%);backdrop-filter:blur(28px) saturate(170%);
  box-shadow:inset 0 1px 0 var(--g-hi),0 34px 80px -28px rgba(0,0,0,.95),0 4px 14px -6px rgba(0,0,0,.6)}
.lp .lx{background:rgba(225,255,240,.04);box-shadow:inset 0 0 0 1px rgba(210,255,234,.08)}
.lp .done pre{background:rgba(0,0,0,.25);border-color:rgba(210,255,234,.08)}

/* ============ PULSANTI SECONDARI: vetro chiaro, il riempimento verde resta ============ */
.btn:not(.pri){background:linear-gradient(180deg,rgba(225,255,240,.07),rgba(225,255,240,.02));border-color:rgba(210,255,234,.17);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 8px 20px -12px rgba(0,0,0,.8);-webkit-backdrop-filter:blur(12px) saturate(150%);backdrop-filter:blur(12px) saturate(150%)}
.btn.pri{box-shadow:inset 0 1px 0 #fff,0 10px 26px -12px rgba(0,0,0,.85)}

/* ============ PROGETTI IN HOME: la didascalia diventa una lastra di vetro sulla foto ============ */
.wk .pc{border-radius:20px}
.wk .pc::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:linear-gradient(transparent 45%,rgba(0,0,0,.55));z-index:0}
.wk .pi{left:10px;right:10px;bottom:10px;z-index:1;padding:18px 20px 17px;border-radius:14px;background:var(--g-tint),rgba(4,12,9,.5);-webkit-backdrop-filter:blur(18px) saturate(160%);backdrop-filter:blur(18px) saturate(160%);box-shadow:inset 0 1px 0 rgba(255,255,255,.09),inset 0 0 0 1px rgba(210,255,234,.08),0 10px 24px -14px rgba(0,0,0,.9);transition:transform .9s var(--ease)}
@media(hover:hover){.wk .pc:hover .pi{transform:translateY(-4px)}}
/* pagina Progetti: il pulsante sulla copertina diventa vetro */
#wk .pc .vw,.dm .pc .vw{background:var(--g-tint),rgba(4,12,9,.55);border-color:rgba(210,255,234,.16);-webkit-backdrop-filter:blur(16px) saturate(160%);backdrop-filter:blur(16px) saturate(160%);box-shadow:inset 0 1px 0 rgba(255,255,255,.1)}

/* filtri della pagina Progetti e icone social: stessa goccia di vetro */
.fl button,.soc a{background:linear-gradient(180deg,rgba(225,255,240,.06),rgba(225,255,240,.015));border-color:rgba(210,255,234,.14);box-shadow:inset 0 1px 0 rgba(255,255,255,.07)}
.fl button.on{background:linear-gradient(180deg,rgba(61,245,168,.2),rgba(61,245,168,.07));border-color:rgba(61,245,168,.55);box-shadow:inset 0 1px 0 rgba(200,255,230,.25)}

/* dove il browser non sa sfocare, il vetro diventa una lastra scura: il testo resta leggibile */
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .nav,.nav.sc,.lp{background:rgba(4,11,8,.94)}
  .mm{background:rgba(0,0,0,.96)}
  .wk .pi{background:rgba(4,11,8,.88)}
}
@media(prefers-reduced-transparency:reduce){
  .nav,.nav.sc,.lp{background:rgba(4,11,8,.96)}
  .mm{background:#000}
  .wk .pi{background:rgba(4,11,8,.92)}
}
@media(prefers-reduced-motion:reduce){.nav ul .goccia{transition:opacity .01ms}}