/* calculadoras.css — calculadoras em /calculadora-de-autonomia/ e /calculadora-custo-por-km/.
   Namespace .calc-*. O cabeçalho reaproveita .fer-head / .fer-byline de ferramentas.css. */

.calc {
  background: #0f1210;
  border-radius: 12px;
  padding: 26px 22px;
  color: #fff;
  margin: 0 0 20px;
}

.calc__modes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}
.calc__mode {
  position: relative;
  flex: 1 1 200px;
}
.calc__mode input {
  position: absolute;
  opacity: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
}
.calc__mode span {
  display: block;
  padding: 11px 14px;
  border: 1px solid #2a2f27;
  border-radius: 8px;
  background: #171a16;
  color: #9ca3af;
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.35;
  text-align: center;
}
.calc__mode input:checked + span {
  border-color: var(--accent);
  color: #fff;
  background: rgba(48, 223, 71, 0.1);
}
.calc__mode input:focus-visible + span {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.calc__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}
.calc__grid[hidden] { display: none; }

.calc__field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.calc__label {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9ca3af;
}
.calc__input {
  width: 100%;
  background: #171a16;
  border: 1px solid #2a2f27;
  border-radius: 8px;
  color: #fff;
  font: inherit;
  font-size: 1.02rem;
  font-variant-numeric: tabular-nums;
  padding: 11px 12px;
}
.calc__input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
.calc__hint {
  margin: 0;
  font-size: 0.76rem;
  line-height: 1.5;
  color: #98a0ae;
}

.calc__result {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid #23261f;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 18px;
}
.calc__main { grid-column: 1 / -1; }
.calc__big {
  font-size: clamp(2.4rem, 9vw, 3.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}
.calc__unit {
  display: inline-block;
  margin-left: 6px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6b7280;
}
.calc__caption {
  margin-top: 6px;
  font-size: 0.84rem;
  line-height: 1.55;
  color: #9ca3af;
}
.calc__item-val {
  font-size: 1.35rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #fff;
}
.calc__item-lbl {
  margin-top: 2px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #98a0ae;
}
.calc__aviso {
  margin: 18px 0 0;
  font-size: 0.78rem;
  line-height: 1.55;
  color: #98a0ae;
}
.calc__erro {
  color: #fca5a5;
  font-size: 0.86rem;
  min-height: 1.2em;
  margin: 12px 0 0;
}