:root {
  --bg: #f5f5f2;
  --card: #ffffff;
  --ink: #16161a;
  --muted: #5d5d66;
  --line: #e4e4de;
  --brand: #5c0bfe;
  --brand-ink: #ffffff;
  --dark: #16161a;
  --fb: #1877f2;
  --ok: #157f3b;
  --warn: #9a6400;
  --err: #b42318;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f0f12;
    --card: #1a1a1f;
    --ink: #f2f2ef;
    --muted: #a3a3ad;
    --line: #2c2c33;
    --ok: #4ade80;
    --warn: #fbbf24;
    --err: #f87171;
    --brand: #f5f05c;
    --brand-ink: #0b0b0d;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f0f12; --card: #1a1a1f; --ink: #f2f2ef; --muted: #a3a3ad; --line: #2c2c33;
  --ok: #4ade80; --warn: #fbbf24; --err: #f87171; --brand: #f5f05c; --brand-ink: #0b0b0d; color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 Inter, system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.top { background: var(--dark); padding: 18px 16px; display: flex; justify-content: center; }
.logo { height: 28px; }
.card {
  width: min(560px, calc(100% - 32px));
  margin: 28px auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px clamp(20px, 5vw, 36px);
}
h1 { font-size: clamp(22px, 5vw, 28px); line-height: 1.2; margin: 4px 0 12px; letter-spacing: -0.01em; }
.eyebrow { margin: 0; color: var(--muted); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.lead { color: var(--muted); margin: 0 0 20px; }
.punti { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 10px; }
.punti li { padding-left: 28px; position: relative; color: var(--muted); }
.punti li b { color: var(--ink); }
.punti li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--brand); box-shadow: inset 0 0 0 4px var(--card);
}
.nota { font-size: 13px; color: var(--muted); margin: 12px 0 0; }

.btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; min-height: 50px; border: 0; border-radius: 10px;
  font: 600 16px Inter, sans-serif; cursor: pointer; text-decoration: none;
}
.btn.fb { background: var(--fb); color: #fff; }
.btn.fb:hover { filter: brightness(1.07); }
.btn.primario { background: var(--brand); color: var(--brand-ink); margin-top: 8px; }
.btn.primario:hover { filter: brightness(1.1); }
.btn.secondario { background: transparent; color: var(--ink); border: 1px solid var(--line); margin-top: 20px; }
.btn:disabled { opacity: .6; cursor: progress; }
.btn:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--fb); outline-offset: 2px; }

fieldset { border: 0; padding: 0; margin: 0 0 24px; }
legend { font-weight: 700; margin-bottom: 10px; }
.lista { display: grid; gap: 8px; margin-bottom: 8px; }
.opzione {
  display: flex; gap: 12px; align-items: center; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 10px; cursor: pointer; margin-bottom: 8px;
}
.opzione:has(input:checked) { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.opzione.disabilitata { opacity: .55; cursor: not-allowed; }
.opzione input { accent-color: var(--ink); width: 18px; height: 18px; flex: none; }
.opzione img { width: 36px; height: 36px; border-radius: 50%; flex: none; }
.opzione span { display: flex; flex-direction: column; min-width: 0; }
.opzione b { overflow-wrap: anywhere; }
.opzione small { color: var(--muted); font-size: 13px; }
.sotto { padding: 4px 0 12px 14px; border-left: 2px solid var(--line); margin: 0 0 8px 8px; }
.campo { display: grid; gap: 6px; font-size: 14px; font-weight: 600; margin-bottom: 10px; }
.campo select, .campo input {
  font: 15px Inter, sans-serif; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink); width: 100%;
}
.vuoto { color: var(--muted); font-size: 14px; padding: 10px 0; }
.caricamento { color: var(--muted); padding: 24px 0; }

.banner { padding: 12px 14px; border-radius: 10px; background: color-mix(in srgb, var(--err) 12%, transparent); color: var(--err); margin-bottom: 20px; font-size: 14px; }

.passi { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.passi li { border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.passi .riga { display: flex; gap: 10px; align-items: baseline; font-weight: 600; }
.passi .stato { flex: none; width: 22px; text-align: center; }
.passi .ok .stato { color: var(--ok); }
.passi .attenzione { border-color: color-mix(in srgb, var(--warn) 45%, var(--line)); }
.passi .attenzione .stato { color: var(--warn); }
.passi .errore { border-color: color-mix(in srgb, var(--err) 45%, var(--line)); }
.passi .errore .stato { color: var(--err); }
.passi p { margin: 6px 0 0 32px; color: var(--muted); font-size: 14px; }
.passi .azioni { margin: 10px 0 0 32px; display: flex; flex-wrap: wrap; gap: 8px; }
.passi a, .passi button {
  font: 600 14px Inter, sans-serif; padding: 8px 12px; border-radius: 8px; text-decoration: none;
  border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer;
}
.passi a { background: var(--ink); color: var(--card); border-color: var(--ink); }
code { font: 600 14px ui-monospace, Menlo, monospace; }

.piede { text-align: center; color: var(--muted); font-size: 12px; padding: 8px 16px 28px; margin-top: auto; }

legend .n { display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 8px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); font-size: 12px; }
.opzione:has(input:checked) { border-color: var(--brand); box-shadow: inset 0 0 0 1px var(--brand); }
.opzione input { accent-color: var(--brand); }