/* ============================================================
   RispondiSempre — landing styles
   Token di brand in variabili: riusabili e pronti per espansione
   multi-pagina. Vedi reference/brand.md
   ============================================================ */

:root {
  /* Colori brand */
  --indaco:   #4F46E5;
  --violetto: #7C3AED;
  --verde:    #10B981;
  --inchiostro: #0F172A;
  --slate:    #475569;
  --muted:    #64748B; /* minimo per testo piccolo/legale (WCAG AA) */
  --bordo:    #E2E8F0;
  --sfondo:   #F8FAFC;
  --bianco:   #FFFFFF;
  --gradiente: linear-gradient(135deg, var(--indaco) 0%, var(--violetto) 100%);

  /* Tipografia */
  --font-titoli: 'Plus Jakarta Sans', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-testo:  'Inter', -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Layout */
  --max-width: 1080px;
  --radius:    16px;
  --radius-sm: 10px;
  --gap:       24px;
  --shadow:    0 1px 3px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.06);
}

/* ---------- Reset leggero ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-testo);
  color: var(--inchiostro);
  background: var(--bianco);
  line-height: 1.6;
  font-size: 17px;
}
img { max-width: 100%; display: block; }
a { color: var(--indaco); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--font-titoli); font-weight: 800; line-height: 1.2; color: var(--inchiostro); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--bordo);
  background: var(--bianco);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
  flex-wrap: wrap;
}
.logo { display: inline-flex; align-items: center; }
.logo:hover { text-decoration: none; }
.header-tag {
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
}

/* ---------- Bottoni ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-testo);
  font-weight: 600;
  font-size: 16px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, opacity .12s ease;
  text-align: center;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--gradiente);
  color: var(--bianco);
  box-shadow: 0 6px 16px rgba(79,70,229,.28);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(79,70,229,.34); }
.btn-ghost {
  background: var(--bianco);
  color: var(--indaco);
  border: 1.5px solid var(--bordo);
}
.btn-ghost:hover { border-color: var(--indaco); }

/* ---------- Hero ---------- */
.hero {
  background: var(--sfondo);
  border-bottom: 1px solid var(--bordo);
  padding: 72px 0 80px;
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}
.hero-text { flex: 1 1 420px; max-width: 600px; }
.hero-visual {
  flex: 0 0 auto;
  margin: 0;
  text-align: center;
}
.hero-visual img {
  width: 280px;
  max-width: 78vw;
  height: auto;
  filter: drop-shadow(0 18px 44px rgba(15,23,42,.18));
}
.hero-visual figcaption {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
}
.hero h1 {
  font-size: 42px;
  letter-spacing: -0.5px;
  margin: 0 0 20px;
}
.hero-sub {
  font-size: 20px;
  color: var(--slate);
  margin: 0 0 32px;
}
.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-note {
  font-size: 14px;
  color: var(--muted);
}

/* ---------- Sezioni ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--sfondo); }
.section-title {
  font-size: 30px;
  margin: 0 0 8px;
  text-align: center;
}
.section-lead {
  text-align: center;
  color: var(--slate);
  margin: 0 auto 48px;
  max-width: 540px;
  font-size: 18px;
}

/* ---------- Come funziona ---------- */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.step {
  background: var(--bianco);
  border: 1px solid var(--bordo);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  box-shadow: var(--shadow);
}
.step-num {
  position: absolute;
  top: 20px;
  right: 24px;
  font-family: var(--font-titoli);
  font-weight: 800;
  font-size: 20px;
  color: #94A3B8;
}
.step-icon { width: 56px; height: 56px; margin-bottom: 16px; }
.step h3 { font-size: 20px; margin: 0 0 8px; }
.step p { margin: 0; color: var(--slate); }

/* ---------- Benefici ---------- */
.benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  max-width: 880px;
  margin: 0 auto;
}
.benefit {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--bianco);
  border: 1px solid var(--bordo);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.benefit-icon { width: 44px; height: 44px; flex: 0 0 44px; margin-top: 2px; }
.benefit h3 { font-size: 18px; margin: 0 0 4px; }
.benefit p { margin: 0; color: var(--slate); font-size: 16px; }

/* ---------- CTA finale ---------- */
.cta-section { text-align: center; }
.cta-inner { max-width: 620px; }
.cta-section h2 { font-size: 30px; margin: 0 0 12px; }
.cta-section p { color: var(--slate); font-size: 18px; margin: 0 0 28px; }
.cta-section .hero-cta { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--inchiostro);
  color: #CBD5E1;
  padding: 40px 0 28px;
  font-size: 15px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer-brand { display: flex; flex-direction: column; gap: 6px; }
.footer-brand strong { font-family: var(--font-titoli); color: var(--bianco); font-size: 18px; }
.footer-legal { color: #94A3B8; font-size: 13px; } /* su scuro il contrasto regge */
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: #CBD5E1; }
.footer-links a:hover { color: var(--bianco); }
.footer-copy { padding-top: 20px; color: #94A3B8; font-size: 13px; }

/* ============================================================
   Pagina /privacy
   ============================================================ */
.legal {
  padding: 56px 0 72px;
}
.legal .container { max-width: 680px; }
.legal a { text-decoration: underline; text-underline-offset: 2px; }
.legal h1 { font-size: 32px; margin: 0 0 8px; }
.legal .legal-sub { color: var(--slate); margin: 0 0 8px; font-size: 18px; }
.legal h2 { font-size: 20px; margin: 36px 0 6px; }
.legal h3 { font-size: 19px; margin: 28px 0 4px; color: var(--indaco); font-family: var(--font-titoli); font-weight: 700; }
.legal p { margin: 0 0 14px; color: var(--inchiostro); }
.legal ul { margin: 0 0 16px; padding-left: 22px; color: var(--inchiostro); }
.legal li { margin-bottom: 8px; }
.legal .legal-note {
  background: var(--sfondo);
  border: 1px solid var(--bordo);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  color: var(--muted);
  font-size: 14px;
  margin-top: 32px;
}
.legal hr { border: none; border-top: 1px solid var(--bordo); margin: 28px 0; }
.back-link { display: inline-block; margin-bottom: 28px; font-weight: 600; }

/* ============================================================
   Responsive — mobile-first: si espande in alto
   ============================================================ */
@media (min-width: 720px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
  .benefits { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 920px) {
  .hero h1 { font-size: 50px; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .hero { padding: 52px 0 56px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 18px; }
  .section { padding: 52px 0; }
  .header-tag { display: none; }
  .btn { width: 100%; }
  .hero-cta { width: 100%; }
}