/* IAinsieme — stile sito, caldo e chiaro, per genitori. Palette diversa da davidecaiazzo.it */
:root {
  --bg: #FFF9F2;
  --bg-alt: #FDF1E3;
  --ink: #2B3A4A;
  --ink-soft: #55677A;
  --brand: #2E7D8C;      /* petrolio calmo, titoli e accenti */
  --brand-soft: #E3F1F4;
  --cta: #FF6B35;        /* UNICO colore CTA in tutto il sito */
  --cta-dark: #E8551F;
  --ok: #3C9A5F;
  --card: #FFFFFF;
  --line: #F0E2D0;
  --radius: 22px;
  --shadow: 0 6px 24px rgba(43,58,74,.08);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 17px;
}
img, video { max-width: 100%; display: block; }
a { color: var(--brand); }
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

/* ---------- Header ---------- */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,249,242,.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; max-width: 1080px; margin: 0 auto;
}
.logo {
  font-weight: 900; font-size: 1.45rem; text-decoration: none; color: var(--brand);
  letter-spacing: -.5px; display: flex; align-items: baseline; gap: 8px;
}
.logo .ia { color: var(--cta); }
.logo small { font-size: .68rem; font-weight: 700; color: var(--ink-soft); letter-spacing: 0; }
.nav-toggle { display: none; }
.nav-burger { display: none; cursor: pointer; font-size: 1.8rem; color: var(--brand); user-select: none; }
nav.menu { display: flex; align-items: center; gap: 26px; }
nav.menu a { text-decoration: none; color: var(--ink); font-weight: 700; font-size: .98rem; }
nav.menu a:hover { color: var(--brand); }
nav.menu a.attivo { color: var(--brand); border-bottom: 3px solid var(--cta); padding-bottom: 2px; }
.btn {
  display: inline-block; background: var(--cta); color: #fff !important;
  font-weight: 800; text-decoration: none; border: none; cursor: pointer;
  padding: 14px 28px; border-radius: 999px; font-size: 1.02rem;
  font-family: inherit;
  box-shadow: 0 4px 14px rgba(255,107,53,.35);
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { background: var(--cta-dark); transform: translateY(-2px); }
.btn.grande { padding: 17px 36px; font-size: 1.12rem; }
nav.menu .btn { padding: 11px 22px; font-size: .95rem; }

/* ---------- Sezioni ---------- */
section { padding: 64px 0; }
section.alt { background: var(--bg-alt); }
.occhiello {
  display: inline-block; background: var(--brand-soft); color: var(--brand);
  font-weight: 800; font-size: .85rem; padding: 7px 16px; border-radius: 999px;
  margin-bottom: 18px; letter-spacing: .3px;
}
h1 { font-size: clamp(1.9rem, 5vw, 3rem); font-weight: 900; line-height: 1.18; letter-spacing: -.5px; color: var(--ink); }
h2 { font-size: clamp(1.5rem, 3.6vw, 2.1rem); font-weight: 900; line-height: 1.25; margin-bottom: 18px; color: var(--ink); }
h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 8px; color: var(--brand); }
.sottotitolo { font-size: 1.18rem; color: var(--ink-soft); margin-top: 18px; }
.microcopy { font-size: .92rem; color: var(--ink-soft); margin-top: 12px; }
.microcopy .check { color: var(--ok); font-weight: 800; }
.centro { text-align: center; }
.hero { padding: 72px 0 56px; }
.hero .btn { margin-top: 28px; }

/* Barra fiducia */
.fiducia {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin-top: 44px;
}
.fiducia div {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 14px; font-size: .88rem; font-weight: 700; color: var(--ink-soft);
  display: flex; align-items: center; gap: 10px; box-shadow: var(--shadow);
}
.fiducia span.icona { font-size: 1.4rem; }

/* Card generiche */
.griglia { display: grid; gap: 22px; margin-top: 34px; }
.griglia.tre { grid-template-columns: repeat(3, 1fr); }
.griglia.due { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; box-shadow: var(--shadow);
}
.card .icona { font-size: 2rem; margin-bottom: 12px; display: block; }
.card p { color: var(--ink-soft); font-size: .98rem; }
.card .eta { font-weight: 900; color: var(--cta); font-size: .9rem; letter-spacing: .5px; }
.card.evidenza { border: 3px solid var(--cta); position: relative; }
.card .badge-attivo {
  position: absolute; top: -14px; left: 24px; background: var(--cta); color: #fff;
  font-size: .78rem; font-weight: 800; padding: 4px 14px; border-radius: 999px;
}
.card.spenta { opacity: .72; }

/* Passi numerati */
.passi { counter-reset: passo; display: grid; gap: 18px; margin-top: 30px; }
.passo {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px 22px 76px; position: relative; box-shadow: var(--shadow);
}
.passo::before {
  counter-increment: passo; content: counter(passo);
  position: absolute; left: 22px; top: 22px;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--brand); color: #fff; font-weight: 900; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
}
.passo strong { display: block; margin-bottom: 4px; font-size: 1.05rem; }
.passo p { color: var(--ink-soft); font-size: .97rem; }

/* Elenco sicurezza */
.regole { display: grid; gap: 14px; margin-top: 28px; }
.regola {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 18px 20px; display: flex; gap: 14px; align-items: flex-start;
  box-shadow: var(--shadow);
}
.regola .spunta { color: var(--ok); font-size: 1.3rem; font-weight: 900; line-height: 1.3; }
.regola strong { display: block; }
.regola p { color: var(--ink-soft); font-size: .95rem; }

/* Curriculum accordion */
details.lezione {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  margin-top: 12px; box-shadow: var(--shadow); overflow: hidden;
}
details.lezione summary {
  cursor: pointer; padding: 18px 20px; font-weight: 800; font-size: 1.02rem;
  list-style: none; display: flex; align-items: center; gap: 12px; color: var(--ink);
}
details.lezione summary::-webkit-details-marker { display: none; }
details.lezione summary .num {
  flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand); font-weight: 900;
  display: flex; align-items: center; justify-content: center; font-size: .95rem;
}
details.lezione summary::after { content: '+'; margin-left: auto; font-size: 1.4rem; color: var(--cta); font-weight: 900; }
details.lezione[open] summary::after { content: '–'; }
details.lezione .corpo { padding: 0 20px 20px 66px; color: var(--ink-soft); font-size: .96rem; }
details.lezione .corpo p { margin-bottom: 10px; }
details.lezione .corpo strong { color: var(--ink); }

/* Prezzo */
.card-prezzo {
  max-width: 460px; margin: 36px auto 0; text-align: center; padding: 40px 32px;
}
.card-prezzo .prezzo { font-size: 3.4rem; font-weight: 900; color: var(--ink); line-height: 1; }
.card-prezzo .prezzo small { font-size: 1.05rem; font-weight: 700; color: var(--ink-soft); }
.card-prezzo ul { list-style: none; margin: 24px 0; text-align: left; }
.card-prezzo ul li { padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: .98rem; color: var(--ink-soft); }
.card-prezzo ul li::before { content: '✓  '; color: var(--ok); font-weight: 900; }
.garanzia {
  background: var(--brand-soft); border-radius: 16px; padding: 16px 20px;
  font-size: .95rem; color: var(--brand); font-weight: 700; margin-top: 20px;
}

/* FAQ */
details.faq {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  margin-top: 12px; box-shadow: var(--shadow);
}
details.faq summary {
  cursor: pointer; padding: 18px 20px; font-weight: 800; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: '+'; font-size: 1.4rem; color: var(--cta); font-weight: 900; flex-shrink: 0; }
details.faq[open] summary::after { content: '–'; }
details.faq .risposta { padding: 0 20px 18px; color: var(--ink-soft); font-size: .97rem; }

/* Video founder reale, verticale 9/16, contenuto */
.video-founder {
  display: block; width: 100%; max-width: 720px; aspect-ratio: 16/9;
  margin: 30px auto 0; border-radius: var(--radius);
  box-shadow: var(--shadow); background: #000;
}

/* Video founder */
.video-box {
  max-width: 420px; margin: 30px auto 0; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); background: var(--brand); aspect-ratio: 9/16;
  display: flex; align-items: center; justify-content: center; text-align: center;
  color: #fff; padding: 30px; font-weight: 700;
}
.video-box .play { font-size: 3rem; display: block; margin-bottom: 14px; }

/* Founder */
.founder { display: grid; grid-template-columns: 200px 1fr; gap: 34px; align-items: start; margin-top: 30px; }
.founder .foto {
  width: 200px; height: 200px; border-radius: 50%; background: var(--brand-soft);
  display: flex; align-items: center; justify-content: center; font-size: 4rem;
  border: 4px solid var(--card); box-shadow: var(--shadow);
}
.founder .foto img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; display: block; }
.founder blockquote { font-size: 1.08rem; color: var(--ink); font-style: italic; border-left: 4px solid var(--cta); padding-left: 18px; margin-top: 16px; }

/* Form iscrizione */
.iscriviti-box {
  background: var(--card); border: 3px solid var(--cta); border-radius: var(--radius);
  padding: 40px 32px; max-width: 620px; margin: 36px auto 0; box-shadow: var(--shadow);
}
.iscriviti-box label { display: block; font-weight: 800; font-size: .92rem; margin: 16px 0 6px; }
.iscriviti-box input, .iscriviti-box select {
  width: 100%; padding: 13px 16px; border: 2px solid var(--line); border-radius: 12px;
  font-family: inherit; font-size: 1rem; background: var(--bg);
}
.iscriviti-box input:focus, .iscriviti-box select:focus { outline: none; border-color: var(--brand); }
.iscriviti-box .btn { width: 100%; margin-top: 22px; }

/* CTA finale */
.cta-finale { text-align: center; padding: 72px 0; background: var(--bg-alt); }
.cta-finale h2 { max-width: 720px; margin: 0 auto 10px; }

/* Footer */
footer { background: #2B3A4A; color: #C8D4DE; padding: 44px 0 30px; font-size: .92rem; }
footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
footer .logo { color: #fff; margin-bottom: 10px; }
footer .logo .ia { color: var(--cta); }
footer a { color: #C8D4DE; text-decoration: none; display: block; padding: 3px 0; }
footer a:hover { color: #fff; }
footer strong { color: #fff; display: block; margin-bottom: 8px; }
footer .legale { grid-column: 1 / -1; border-top: 1px solid #445667; margin-top: 20px; padding-top: 18px; font-size: .84rem; color: #93A5B5; }

/* ---------- Mobile ---------- */
@media (max-width: 860px) {
  .griglia.tre, .griglia.due, .fiducia { grid-template-columns: 1fr; }
  .fiducia { grid-template-columns: repeat(2, 1fr); }
  .founder { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .founder blockquote { text-align: left; }
  footer .container { grid-template-columns: 1fr; }
  .nav-burger { display: block; }
  nav.menu {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    flex-direction: column; padding: 18px 20px 24px; gap: 16px; align-items: flex-start;
    box-shadow: 0 12px 24px rgba(43,58,74,.12);
  }
  .nav-toggle:checked ~ nav.menu { display: flex; }
  section { padding: 48px 0; }
  .hero { padding: 48px 0 40px; }
  details.lezione .corpo { padding-left: 20px; }
}

/* Consenso privacy form */
.consenso { display: flex; gap: 10px; align-items: flex-start; margin-top: 18px; font-weight: 500; font-size: .88rem; line-height: 1.5; color: var(--ink-soft); cursor: pointer; }
.consenso input { width: auto; margin-top: 3px; flex-shrink: 0; transform: scale(1.3); accent-color: var(--cta); }
.consenso a { display: inline; text-decoration: underline; color: var(--brand); }