/* =========================================================
   AI or not AI — Comunicare oltre l'AI
   Landing Timmagine · Milano 24.09.2026 / Brescia 01.10.2026
   Palette approvata dal cliente:
     #54c2e8  sky      #91bd54  green
     #0096d6  blue     #111c2e  navy
   ========================================================= */

/* ---------- Font ----------
   Figtree (Google Fonts, licenza SIL OFL 1.1) sostituisce Grift:
   stessa impronta geometrico-umanista, ma libera da licenza e
   servita in locale — il server interno non raggiunge le CDN. */
@font-face{font-family:"Figtree";src:url("../fonts/Figtree-Light.woff2") format("woff2"),url("../fonts/Figtree-Light.woff") format("woff");font-weight:300;font-style:normal;font-display:swap}
@font-face{font-family:"Figtree";src:url("../fonts/Figtree-Regular.woff2") format("woff2"),url("../fonts/Figtree-Regular.woff") format("woff");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Figtree";src:url("../fonts/Figtree-Medium.woff2") format("woff2"),url("../fonts/Figtree-Medium.woff") format("woff");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Figtree";src:url("../fonts/Figtree-SemiBold.woff2") format("woff2"),url("../fonts/Figtree-SemiBold.woff") format("woff");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Figtree";src:url("../fonts/Figtree-Bold.woff2") format("woff2"),url("../fonts/Figtree-Bold.woff") format("woff");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Figtree";src:url("../fonts/Figtree-Black.woff2") format("woff2"),url("../fonts/Figtree-Black.woff") format("woff");font-weight:900;font-style:normal;font-display:swap}
@font-face{font-family:"Claire Mono";src:url("../fonts/CSClaireMono-Regular.woff2") format("woff2"),url("../fonts/CSClaireMono-Regular.woff") format("woff");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Claire Mono Drawn";src:url("../fonts/CSClaireMonoDrawn-Regular.woff2") format("woff2"),url("../fonts/CSClaireMonoDrawn-Regular.woff") format("woff");font-weight:400;font-style:normal;font-display:swap}

/* ---------- Token ---------- */
:root{
  --sky:#54c2e8;
  --green:#91bd54;
  --blue:#0096d6;
  --navy:#111c2e;

  /* blu scuro dei pulsanti: #0096d6 sopra la sfumatura azzurra della
     testata spariva (contrasto 1.6:1). Questo tiene 3.9:1 sull'azzurro
     e 7.9:1 col testo bianco. */
  --blue-deep:#00567f;
  --blue-deep-h:#003f5e;

  --ink:#111c2e;
  --ink-2:#4a5568;
  --ink-3:#7a8699;
  --line:#e3ebf2;
  --tint:#f4f8fb;
  --white:#fff;

  --sans:"Figtree",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  --mono:"Claire Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --drawn:"Claire Mono Drawn","Claire Mono",monospace;

  --wrap:1180px;
  --gut:clamp(1.25rem,4vw,2.5rem);
  --pad-y:clamp(4rem,9vw,7.5rem);
  --r:14px;
  --nav-h:76px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html:focus-within{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-weight:400;
  font-size:clamp(1rem,.96rem + .2vw,1.0625rem);
  line-height:1.65;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
abbr[title]{text-decoration:none;color:var(--blue)}

:where(a,button,input,select,[tabindex]):focus-visible{
  outline:3px solid var(--blue);
  outline-offset:3px;
  border-radius:4px;
}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--navy);color:#fff;padding:.75rem 1.25rem;
}
.skip-link:focus{left:1rem;top:1rem}

/* ---------- Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.wrap--narrow{max-width:860px}
.wrap--center{text-align:center}
.wrap+.wrap{margin-top:clamp(2.5rem,5vw,3.5rem)}

.band{padding-block:var(--pad-y);position:relative}
.band--tint{background:var(--tint)}
.band--navy{background:var(--navy);color:#fff}

/* stessa sfumatura della testata, con velo per tenere leggibili i testi bianchi */
.band--gradient{position:relative;isolation:isolate;overflow:hidden;color:#fff}
.band--gradient::before{
  content:"";position:absolute;inset:0;z-index:-2;
  /* ritaglio della fascia bassa di sfumatura.ai: niente angolo crema,
     che velato ingrigisce. Con cover copre qualsiasi proporzione. */
  background:url("../img/gradient-band.jpg") center/cover no-repeat;
}
.band--gradient::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,
    rgba(17,28,46,.46) 0%,
    rgba(17,28,46,.26) 45%,
    rgba(17,28,46,.06) 100%);
}
.band--gradient .eyebrow{color:#fff}

/* ---------- Tipografia ---------- */
.eyebrow{
  font-family:var(--mono);
  font-size:.75rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:1.25rem;
}
.eyebrow--ondark{color:var(--sky)}
.eyebrow--onlight{color:#fff}

.h2{
  font-weight:700;
  font-size:clamp(1.9rem,1.2rem + 2.6vw,3.1rem);
  line-height:1.1;
  letter-spacing:-.02em;
  text-wrap:balance;
}
.h2--light{color:#fff}

.lead{
  margin-top:1.25rem;
  font-size:clamp(1.02rem,.98rem + .3vw,1.15rem);
  color:var(--ink-2);
  max-width:62ch;
  text-wrap:pretty;
}
.lead--center{margin-inline:auto}
.lead--light{color:rgba(255,255,255,.76)}

/* ---------- Bottoni ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:.5rem;
  padding:.9rem 1.75rem;
  border-radius:999px;
  border:1.5px solid transparent;
  font-weight:600;font-size:.98rem;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
  will-change:transform;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--blue-deep);color:#fff}
.btn--primary:hover{background:var(--blue-deep-h)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.65);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn--sm{padding:.6rem 1.25rem;font-size:.9rem}
.btn--block{width:100%}

/* =========================================================
   NAV
   ========================================================= */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  height:var(--nav-h);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.nav__inner{
  height:100%;
  max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut);
  display:flex;align-items:center;gap:2rem;
}
.nav__logo{display:flex;align-items:center;text-decoration:none;margin-right:auto}
.nav__logo img{width:38px;height:auto}
.nav__links{display:flex;gap:1.75rem}
.nav__links a{
  font-size:.94rem;font-weight:500;text-decoration:none;color:#fff;
  transition:color .25s ease,opacity .2s ease;opacity:.92;
}
.nav__links a:hover{opacity:1;color:var(--sky)}

/* sopra la testata il CTA della barra è bianco: il blu si perderebbe nel gradiente.
   Vale solo per il pulsante nella barra: quello dentro il menu mobile sta su
   pannello bianco e resterebbe invisibile. */
.nav:not(.is-stuck):not(.is-open) .nav__inner .btn--primary{background:#fff;color:var(--navy)}
.nav:not(.is-stuck):not(.is-open) .nav__inner .btn--primary:hover{background:rgba(255,255,255,.85)}

.nav.is-stuck{background:rgba(255,255,255,.94);backdrop-filter:blur(10px);box-shadow:0 1px 0 var(--line)}
.nav.is-stuck .nav__links a{color:var(--navy)}
.nav.is-stuck .nav__links a:hover{color:var(--blue)}
.nav.is-stuck .nav__burger span{background:var(--navy)}

.nav__burger{
  display:none;
  width:42px;height:34px;padding:0;
  background:none;border:0;cursor:pointer;
  flex-direction:column;justify-content:center;gap:6px;
}
.nav__burger span{display:block;height:2px;background:#fff;border-radius:2px;transition:background .25s ease}

.nav__mobile{
  display:none;flex-direction:column;gap:.35rem;
  padding:1rem var(--gut) 1.5rem;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 20px 40px -20px rgba(17,28,46,.3);
}
.nav__mobile a{padding:.7rem 0;text-decoration:none;font-weight:500;color:var(--navy)}
.nav__mobile .btn{margin-top:.75rem}
/* batte il navy di `.nav__mobile a`, che è più specifico di `.btn--primary` */
.nav__mobile .btn--primary{color:#fff;padding-block:.9rem}

/* =========================================================
   TESTATA — riprende la grafica dell'invito
   ========================================================= */
.testata{
  position:relative;
  min-height:100svh;
  /* il blocco sta al centro dell'altezza utile, subito sotto il menu */
  display:flex;flex-direction:column;justify-content:center;
  padding-top:calc(var(--nav-h) + clamp(1rem,3vw,2rem));
  padding-bottom:clamp(2rem,5vw,3.5rem);
  overflow:hidden;
  isolation:isolate;
}
.testata__bg{
  position:absolute;inset:0;z-index:-1;
  background-image:url("../img/gradient.jpg");
  background-size:cover;
  background-position:center;
}
.testata__inner{
  width:100%;max-width:var(--wrap);
  margin-inline:auto;padding-inline:var(--gut);
}

/* --- lockup: AI or not AI, tutto su una riga ---
   Su riga unica il vincolo e la larghezza, non l'altezza: misurato a
   schermo il lockup occupa 3.51 volte --ai, quindi il coefficiente in vw
   sta sotto 92/3.51 (92vw e la colonna al netto delle gutter) e il cap in
   rem lo tiene dentro i 1100px utili di --wrap. */
.lockup{
  margin:clamp(.5rem,1.5vw,1.25rem) 0 clamp(1.75rem,4vw,2.75rem);
  font-weight:700;
  color:#fff;
  line-height:.9;
  letter-spacing:-.03em;
  display:flex;align-items:baseline;
  gap:calc(var(--ai) * .14);
  white-space:nowrap;
  --ai:clamp(2.5rem,25vw,19.25rem);
}
.lockup__ai{font-size:var(--ai);display:block}

.lockup__ornot{
  font-family:var(--drawn);
  font-weight:400;
  font-size:calc(var(--ai) * .34);
  letter-spacing:.04em;
  color:var(--blue);
  white-space:nowrap;
}
.lockup__ornot-txt{position:relative;display:inline-block}
.lockup__ornot-txt::after{
  content:"";position:absolute;
  left:-4%;right:-4%;top:52%;
  height:.062em;
  background:currentColor;
  border-radius:2px;
}

/* --- piede testata --- */
.testata__foot{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:clamp(1.75rem,4vw,3rem);
  align-items:start;
}
.testata__title{
  /* peso 900 richiesto dal cliente: lo ha solo Figtree (--sans),
     CS Claire Mono si ferma al 400 e il browser lo falserebbe */
  font-family:var(--sans);
  font-weight:900;
  font-size:clamp(1.05rem,.95rem + .5vw,1.4rem);
  line-height:1.3;
  letter-spacing:.02em;
  color:#fff;
  margin-bottom:.9rem;
}
.testata__claim{
  font-family:var(--mono);
  font-size:clamp(.95rem,.9rem + .25vw,1.08rem);
  line-height:1.6;
  color:rgba(255,255,255,.88);
  max-width:34ch;
}
.testata__cta{
  grid-column:1/-1;
  display:flex;flex-wrap:wrap;gap:.85rem;
  margin-top:.5rem;
}

.tags{display:grid;gap:.85rem}
.tag{
  display:grid;
  grid-template-columns:max-content minmax(0,1fr);
  grid-template-areas:"city date" "city time" "venue venue";
  column-gap:1rem;row-gap:.2rem;
  padding:.9rem 1.25rem;
  /* vetro scuro: il gradiente sfuma al bianco a destra,
     una card chiara diventerebbe illeggibile */
  background:rgba(17,28,46,.34);
  border:1px solid rgba(255,255,255,.28);
  border-radius:var(--r);
  backdrop-filter:blur(8px);
  color:#fff;
}
.tag__city{
  grid-area:city;
  font-family:var(--mono);text-transform:uppercase;
  letter-spacing:.16em;font-size:.72rem;
  color:var(--sky);
  align-self:center;
  padding-right:1rem;border-right:1px solid rgba(255,255,255,.3);
}
.tag__date{grid-area:date;font-weight:700;font-size:1.05rem}
.tag__time{grid-area:time;font-family:var(--mono);font-size:.85rem;color:var(--sky)}
.tag__venue{grid-area:venue;font-size:.82rem;color:rgba(255,255,255,.72);line-height:1.45;min-width:0;overflow-wrap:anywhere}

/* =========================================================
   IL TEMA
   ========================================================= */
.tema{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:clamp(2rem,5vw,4rem);
  align-items:center;
}
.stats{display:grid;gap:1rem}
.stat{
  padding:1.5rem 1.75rem;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r);
  background:rgba(255,255,255,.04);
}
.stat__num{
  display:block;
  font-size:clamp(1.6rem,1.3rem + 1vw,2.1rem);
  font-weight:700;line-height:1.1;color:#fff;
}
.stat__lab{
  display:block;margin-top:.35rem;
  font-family:var(--mono);font-size:.78rem;
  letter-spacing:.08em;text-transform:uppercase;
  color:var(--sky);
}

/* =========================================================
   DOMANDE
   ========================================================= */
.qgrid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1rem;
}
.q{
  display:flex;gap:1rem;align-items:flex-start;
  padding:1.4rem 1.6rem;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
}
.q p{font-weight:500;line-height:1.5}
.q__mark{
  flex:0 0 auto;
  width:2.25rem;height:2.25rem;
  display:grid;place-items:center;
  border-radius:10px;
  background:rgba(84,194,232,.18);
  color:var(--blue);
  font-weight:700;
}

.strip{
  margin:clamp(2rem,4vw,3rem) 0 0;
  padding:clamp(1.75rem,3.5vw,2.5rem);
  background:var(--navy);
  border-radius:var(--r);
  color:#fff;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:clamp(1.25rem,3vw,2.5rem);
  align-items:center;
}
.strip__claim{font-size:clamp(1.15rem,1rem + .7vw,1.5rem);font-weight:700;line-height:1.3}
.strip__claim em{color:var(--sky);font-style:normal}
.strip__note{font-size:.95rem;color:rgba(255,255,255,.68)}

/* =========================================================
   CARD CONTENUTI
   ========================================================= */
.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:1.25rem;
}
.card{
  padding:1.9rem 1.75rem;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r);
  transition:transform .2s ease,box-shadow .2s ease;
  will-change:transform;
}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(17,28,46,.4)}
.card__rule{display:block;width:44px;height:4px;border-radius:2px;background:var(--blue);margin-bottom:1.4rem}
.card__rule--green{background:var(--green)}
.card__rule--sky{background:var(--sky)}
.card h3{font-size:1.15rem;font-weight:700;margin-bottom:.6rem}
.card p{color:var(--ink-2);font-size:.97rem}

/* =========================================================
   PROGRAMMA
   ========================================================= */
.prog{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:clamp(2rem,5vw,4.5rem);
  align-items:start;
}
.agenda{
  border-top:1px solid var(--line);
  counter-reset:step;
}
.agenda__item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:1.5rem;
  align-items:baseline;
  padding:1.15rem .25rem;
  border-bottom:1px solid var(--line);
}
.agenda__time{
  font-family:var(--mono);
  font-size:.9rem;
  color:var(--blue);
  white-space:nowrap;
  font-variant-numeric:tabular-nums;
}
.agenda__body{color:var(--ink-2)}
.agenda__body strong{color:var(--ink);font-weight:700}

/* =========================================================
   RELATORI
   ========================================================= */
.people{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:1.25rem;
  max-width:900px;margin-inline:auto;
}
.person{
  display:flex;align-items:center;gap:1.4rem;
  padding:1.5rem 1.75rem;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
}
.person__img{
  flex:0 0 auto;
  width:96px;height:96px;
  border-radius:50%;
  background:var(--tint);
}
.person__name{font-size:1.2rem;font-weight:700}
.person__role{
  margin-top:.25rem;
  font-family:var(--mono);font-size:.82rem;
  letter-spacing:.03em;color:var(--blue);
}

/* =========================================================
   ISCRIZIONE
   ========================================================= */
.signup{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:clamp(2rem,5vw,4rem);
  align-items:start;
}
.venues{display:grid;gap:1rem;margin-top:2.25rem}
.venue{
  padding:1.15rem 1.4rem;
  border:1px solid rgba(255,255,255,.28);
  border-radius:var(--r);
  background:rgba(17,28,46,.34);
  backdrop-filter:blur(8px);
}
.venue__city{
  font-family:var(--mono);text-transform:uppercase;
  letter-spacing:.16em;font-size:.72rem;color:var(--sky);
}
.venue__date{display:block;font-weight:700;font-size:1.05rem;margin-top:.15rem}
.venue__time{display:block;font-family:var(--mono);font-size:.85rem;color:var(--sky);margin-top:.15rem}
.venue__addr{display:block;margin-top:.4rem;font-size:.88rem;color:rgba(255,255,255,.75);line-height:1.5}

.form{
  background:#fff;color:var(--ink);
  border-radius:18px;
  padding:clamp(1.5rem,3vw,2.25rem);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.55);
}
.form__head{margin-bottom:1.5rem}
.form__title{font-size:1.35rem;font-weight:700}
.form__sub{font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-top:.2rem}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{margin:0 0 1rem}
.field label{
  display:block;
  font-size:.82rem;font-weight:600;
  margin-bottom:.4rem;
}
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field select{
  width:100%;
  padding:.75rem .9rem;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:#a8b3c2}
.field input:focus,.field select:focus{
  outline:none;
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(0,150,214,.16);
}
.field select{appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' fill='none' stroke='%237a8699' stroke-width='1.6' stroke-linecap='round'/></svg>");
  background-repeat:no-repeat;background-position:right .9rem center;background-size:12px;
  padding-right:2.4rem;
}
.field--check{display:flex;gap:.6rem;align-items:flex-start;margin-top:1.25rem}
.field--check input{margin-top:.28rem;accent-color:var(--blue);width:1rem;height:1rem;flex:0 0 auto}
.field--check label{font-weight:400;font-size:.85rem;color:var(--ink-2);margin:0}
.field--check a{color:var(--blue)}
.form__note{margin-top:.85rem;font-size:.75rem;color:var(--ink-3);text-align:right}

/* =========================================================
   FOOTER
   ========================================================= */
.foot{background:#0b1422;color:rgba(255,255,255,.62);padding-block:clamp(3rem,6vw,4.5rem)}
.foot__grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.2fr .8fr;
  gap:clamp(1.75rem,4vw,3rem);
  font-size:.88rem;line-height:1.7;
}
.foot__brand img{margin-bottom:1.25rem;width:82px;height:auto}
.foot__brand em{font-style:normal;color:#fff}
.foot h4{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;
  text-transform:uppercase;color:#fff;margin-bottom:.9rem;font-weight:400;
}
.foot__col p+p{margin-top:1rem}
.foot__col strong{color:#fff;font-weight:600}
.foot a{color:inherit;text-decoration:none}
.foot a:hover{color:var(--sky)}
.foot__links li{margin-bottom:.35rem}

.swal2-styled.swal2-confirm {
  background-color: var(--blue) !important;
  color: #fff !important;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:960px){
  .tema,.prog,.signup,.strip{grid-template-columns:1fr}
  .testata__foot{grid-template-columns:1fr}
  .foot__grid{grid-template-columns:1fr 1fr}
  /* in colonna singola il testo occupa tutta la larghezza: velo uniforme */
  .band--gradient::after{
    background:linear-gradient(180deg,rgba(17,28,46,.46),rgba(17,28,46,.3));
  }
}

@media (max-width:760px){
  .nav__links,.nav__inner>.btn{display:none}
  .nav__burger{display:flex}
  .nav.is-open{background:#fff;box-shadow:0 1px 0 var(--line)}
  .nav.is-open .nav__burger span{background:var(--navy)}
  .nav__mobile{display:flex}
  .nav__mobile[hidden]{display:none}

  .testata{min-height:auto;padding-bottom:3.5rem}
  .testata__bg{background-image:url("../img/gradient-portrait.jpg")}
  .lockup{--ai:clamp(2.25rem,23vw,12rem)}

  .qgrid{grid-template-columns:1fr}
  .form__row{grid-template-columns:1fr}
  .person{flex-direction:column;text-align:center;gap:1rem}
  .foot__grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  html:focus-within{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .btn:hover,.card:hover{transform:none}
}

@media print{
  .nav,.testata__cta,.form{display:none}
  .testata__bg{display:none}
  body{color:#000}
}