:root {
  --primario: #0b4f8a;
  --su-primario: #ffffff;
  --font: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --testo: #18212b;
  --tenue: #5b6875;
  --bordo: #d5dce3;
  --sfondo-tenue: #f3f5f8;
  --rosso: #b3261e;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { margin: 0; background: #fff; }

body {
  color: var(--testo);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
}

.sim { padding: 20px 16px 16px; }

.sim-testata { padding-right: 44px; margin-bottom: 16px; }
h1 { margin: 0; font-size: 1.35rem; line-height: 1.25; }
h2 { margin: 18px 0 4px; font-size: .95rem; }
.veicolo { margin: 2px 0 0; color: var(--tenue); font-size: .9rem; }

form { display: grid; grid-template-columns: 1fr; gap: 14px; }

.campo { min-width: 0; margin: 0; padding: 0; border: 0; }
.campo > label, legend {
  display: block;
  margin-bottom: 5px;
  padding: 0;
  font-size: .9rem;
  font-weight: 600;
}
.facoltativo { color: var(--tenue); font-weight: 400; }

.valuta { position: relative; }
.valuta::before {
  content: "€";
  position: absolute;
  top: 50%;
  left: 12px;
  transform: translateY(-50%);
  color: var(--tenue);
  pointer-events: none;
}

input[type="number"] {
  width: 100%;
  height: 46px;
  padding: 0 12px 0 30px;
  border: 1px solid var(--bordo);
  border-radius: 8px;
  background: #fff;
  color: inherit;
  font: inherit;
  font-size: 1.05rem; /* sopra i 16px: iOS non zooma sul campo */
  font-variant-numeric: tabular-nums;
  appearance: textfield;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

input:focus-visible, .durate input:focus-visible + span, button:focus-visible {
  outline: 2px solid var(--primario);
  outline-offset: 1px;
}

.durate {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(58px, 1fr));
  gap: 6px;
}
.durate label { position: relative; cursor: pointer; }
.durate input { position: absolute; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.durate span {
  display: block;
  padding: 10px 0;
  border: 1px solid var(--bordo);
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.durate input:checked + span {
  border-color: var(--primario);
  background: var(--primario);
  color: var(--su-primario);
}

button {
  height: 46px;
  border: 0;
  border-radius: 8px;
  background: var(--primario);
  color: var(--su-primario);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.risultato {
  margin-top: 18px;
  padding: 16px;
  border-radius: 12px;
  background: var(--sfondo-tenue);
}

.avviso {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-left: 3px solid #c98a00;
  border-radius: 4px;
  background: #fdf6e3;
  font-size: .875rem;
}

.errore { margin: 0 0 6px; color: var(--rosso); font-size: .95rem; }
.errore:last-child { margin-bottom: 0; }

.rata { display: flex; flex-direction: column; align-items: center; text-align: center; }
.rata-etichetta { color: var(--tenue); font-size: .9rem; }
.rata-valore {
  color: var(--primario);
  font-size: 2.5rem;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.rata-nota { color: var(--tenue); font-size: .8rem; }

.tassi { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 14px 0 8px; }
.tassi div {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px;
  border-radius: 8px;
  background: #fff;
}
.tassi span { color: var(--tenue); font-size: .8rem; }
.tassi strong { font-size: 1.15rem; font-variant-numeric: tabular-nums; }

.voci { margin: 0; }
.voci div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px solid var(--bordo);
}
.voci div:last-child { border-bottom: 0; }
.voci dt { color: var(--tenue); font-size: .9rem; }
.voci dd { flex: none; margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }
.voce-totale dt { color: inherit; font-weight: 600; }
.voci-spese dt, .voci-spese dd { font-size: .85rem; }

.legale { margin-top: 14px; color: var(--tenue); font-size: .75rem; line-height: 1.5; }
.legale p { margin: 0 0 8px; white-space: pre-line; }
.legale p:last-child { margin-bottom: 0; }

@media (min-width: 480px) {
  .sim { padding: 24px 24px 20px; }
  form { grid-template-columns: 1fr 1fr; }
  .campo-largo { grid-column: 1 / -1; }
}