:root {
  --bg: #0f1115;
  --panel: #171a21;
  --fg: #e8e8e8;
  --muted: #9aa3b2;
  --line: #262b35;
  --accent: #135796;
  --accent-2: #1f7ad1;
  --ok: #3fb950;
}

/* Variante B: accent ambra, per distinguere a colpo d'occhio i due split. */
.variant-b {
  --accent: #c2691c;
  --accent-2: #e08428;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.wrap.narrow { max-width: 560px; }
.wrap.center { text-align: center; }

h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 0.6rem; }
h2 { font-size: 1.15rem; margin: 2.5rem 0 1rem; }
h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }

.muted { color: var(--muted); }
.sub { color: var(--muted); font-size: 1.05rem; margin: 0 0 1.5rem; }

code {
  background: #0a0c10;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.85em;
}

pre {
  background: #0a0c10;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
}
pre code { border: none; background: none; padding: 0; }

a { color: var(--accent-2); }

.back {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  text-decoration: none;
}

.badge, .kicker {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--accent-2);
  border: 1px solid var(--accent);
  border-radius: 99px;
  padding: 0.25rem 0.7rem;
  margin-bottom: 1rem;
}

/* ---- Hub ---- */
.hub-head { margin-bottom: 1rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.2rem;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card p { color: var(--muted); margin: 0 0 0.6rem; font-size: 0.92rem; }
.card .vlinks { font-size: 0.85rem; }
.card .vlinks a { text-decoration: none; }
.card .vlinks .sep { color: var(--line); margin: 0 0.4rem; }

.list-links { padding-left: 1.1rem; }
.list-links li { margin: 0.45rem 0; }

.diag {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.diag td {
  border-bottom: 1px solid var(--line);
  padding: 0.6rem 0.4rem;
  vertical-align: top;
}
.diag td:first-child { color: var(--muted); width: 40%; }

.snippet-form {
  display: grid;
  gap: 0.75rem;
}

.snippet-label {
  font-size: 0.9rem;
  color: var(--muted);
}

.snippet-form textarea {
  width: 100%;
  min-height: 140px;
  padding: 0.9rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--fg);
  font: inherit;
  line-height: 1.45;
  resize: vertical;
}

.snippet-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.status.ok { color: var(--ok); }
.status.error { color: #ff8383; }
.status.pending { color: var(--muted); }

/* ---- Optin / forms ---- */
.optin-form { display: flex; gap: 0.6rem; flex-wrap: wrap; margin: 1.5rem 0 0.6rem; }
.optin-form.stacked { flex-direction: column; }
.optin-form input[type="email"] {
  flex: 1 1 220px;
  padding: 0.8rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--fg);
  font-size: 1rem;
}

button, .cta {
  display: inline-block;
  padding: 0.8rem 1.4rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s;
}
button:hover, .cta:hover { background: var(--accent-2); }

.note { font-size: 0.82rem; margin-top: 0.4rem; }
.ok { color: var(--ok); font-weight: 600; margin-top: 1rem; }

/* ---- Sales ---- */
.benefits ul { padding-left: 1.2rem; }
.benefits li { margin: 0.4rem 0; }
.pricing { margin-top: 2rem; }
.price-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem;
  text-align: center;
}
.price { font-size: 2.6rem; font-weight: 700; margin: 0 0 1.2rem; }
.price .per { display: block; font-size: 0.9rem; font-weight: 400; color: var(--muted); }
.price .anchor {
  font-size: 1.4rem;
  color: var(--muted);
  text-decoration: line-through;
  margin-right: 0.5rem;
}

/* ---- Thank you ---- */
.check {
  width: 64px; height: 64px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: rgba(63,185,80,.15);
  color: var(--ok);
  font-size: 2rem;
  display: grid;
  place-items: center;
}

/* anti-flicker: gli elementi A/B sono nascosti finché lo snippet non assegna.
   Lo snippet lvbl.js li rivela; failsafe locale a 1.6s in caso non carichi. */
[data-ab-experiment] { opacity: 1; }