/* RapidLaunch - landing di acquisizione. CSS handcrafted, mobile-first. */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f5ff;
  --ink: #14121f;
  --ink-soft: #575269;
  --line: #e7e4f5;
  --accent: #5b3df5;
  --accent-ink: #ffffff;
  --accent-soft: #efe9ff;
  --warn-bg: #fff4e5;
  --warn-line: #ffd8a8;
  --ok: #2b8a3e;
  --err: #c92a2a;
  --radius: 14px;
  --maxw: 1040px;
  --shadow: 0 12px 40px -12px rgba(45, 30, 120, .28);
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .4em; }
h1 { font-size: clamp(2rem, 6vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.2rem); }
p { margin: 0 0 1em; }
a { color: var(--accent); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  background: var(--accent); color: var(--accent-ink);
  border: 0; border-radius: 999px;
  padding: 15px 30px; font-size: 1.02rem; font-weight: 600;
  cursor: pointer; text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  box-shadow: var(--shadow);
}
.btn:hover { transform: translateY(-2px); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn--ghost {
  background: transparent; color: var(--accent);
  border: 1.5px solid var(--line); box-shadow: none; padding: 13px 24px;
}

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, .82); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 800; font-size: 1.15rem; letter-spacing: -.03em; text-decoration: none; color: var(--ink); }
.logo span { color: var(--accent); }

/* ---------- hero ---------- */
.hero { padding: clamp(48px, 9vw, 104px) 0 clamp(40px, 7vw, 80px); background:
  radial-gradient(60% 60% at 12% 0%, var(--accent-soft) 0%, transparent 60%),
  radial-gradient(50% 50% at 100% 10%, #ffe9f4 0%, transparent 55%); }
.hero .eyebrow {
  display: inline-block; font-weight: 600; font-size: .82rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent);
  background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; margin-bottom: 22px;
}
.hero p.lead { font-size: clamp(1.05rem, 2.4vw, 1.3rem); color: var(--ink-soft); max-width: 40ch; }
.hero .cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero .microcopy { margin-top: 16px; font-size: .9rem; color: var(--ink-soft); }

/* ---------- generic section ---------- */
section { padding: clamp(48px, 8vw, 88px) 0; }
section.soft { background: var(--bg-soft); }
.section-head { max-width: 46ch; margin-bottom: 40px; }
.section-head p { color: var(--ink-soft); margin: 0; }

/* ---------- steps / cards ---------- */
.grid { display: grid; gap: 20px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px;
}
.card .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--accent-soft); color: var(--accent); font-weight: 700; margin-bottom: 12px;
}
.card h3 { font-size: 1.1rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: .96rem; }

.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checklist li { padding-left: 30px; position: relative; color: var(--ink-soft); }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--accent); font-weight: 800;
}

/* ---------- form ---------- */
.form-section { background: var(--bg-soft); }
.form-card {
  background: var(--bg); border: 1px solid var(--line); border-radius: 18px;
  box-shadow: var(--shadow); padding: clamp(24px, 4vw, 40px); max-width: 720px; margin: 0 auto;
}
.progress { display: flex; gap: 8px; margin-bottom: 28px; }
.progress span { flex: 1; height: 6px; border-radius: 999px; background: var(--line); }
.progress span.on { background: var(--accent); }

.step { display: none; }
.step.active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.step h3 { font-size: 1.25rem; }
.step > p { color: var(--ink-soft); margin-top: -.2em; }

.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; }
.field .hint { font-weight: 400; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; font: inherit; color: var(--ink);
  background: var(--bg); border: 1.5px solid var(--line); border-radius: 10px;
  transition: border-color .12s ease, box-shadow .12s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft);
}
.field textarea { min-height: 110px; resize: vertical; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--err); }
.field .error { display: none; color: var(--err); font-size: .84rem; margin-top: 5px; }
.field.invalid .error { display: block; }

.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

.consent { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; font-size: .9rem; color: var(--ink-soft); }
.consent input { margin-top: 3px; width: 18px; height: 18px; flex: none; }
.note-riservatezza {
  background: var(--warn-bg); border: 1px solid var(--warn-line);
  border-radius: 10px; padding: 12px 14px; font-size: .88rem; color: #7a4b12; margin: 18px 0;
}

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.step-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 24px; }
.form-msg { margin-top: 16px; font-size: .92rem; }
.form-msg.err { color: var(--err); }

/* ---------- FAQ ---------- */
.faq details {
  border: 1px solid var(--line); border-radius: 12px; padding: 4px 18px; margin-bottom: 12px; background: var(--bg);
}
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--accent); font-weight: 700; }
.faq details[open] summary::after { content: "–"; }
.faq details[open] p { color: var(--ink-soft); margin: 0 0 14px; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; color: var(--ink-soft); font-size: .88rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-footer a { color: var(--ink-soft); }

/* ---------- thank you page ---------- */
.centered { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.centered .card { max-width: 520px; }

/* ---------- legal pages ---------- */
.legal { max-width: 760px; }
.legal h2 { margin-top: 1.6em; font-size: 1.3rem; }
.legal h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); }
.legal ul { color: var(--ink-soft); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .grid.cols-4 { grid-template-columns: 1fr 1fr; }
  .grid.cols-3 { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .grid.cols-4 { grid-template-columns: 1fr; }
  .row-2 { grid-template-columns: 1fr; }
  .hero .cta-row { flex-direction: column; align-items: stretch; }
  .hero .cta-row .btn { width: 100%; }
  .site-header .wrap { height: 58px; }
  .site-header .btn--ghost { padding: 9px 16px; font-size: .9rem; }
  .btn { padding: 14px 22px; }
  .step-nav { flex-wrap: wrap; }
  .step-nav .btn { flex: 1; }
}

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