/* NIKA GRAN — калькулятор ваги та кількості каменю */
.nika-calc {
  margin: 32px 0 40px;
  border: 1px solid rgba(16, 16, 15, .12);
  background: #fff;
  padding: 24px;
}
.nika-calc fieldset { border: 0; margin: 0 0 20px; padding: 0; }
.nika-calc legend {
  padding: 0;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(16, 16, 15, .55);
}
.nika-calc__modes { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.nika-calc__modes label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(16, 16, 15, .16);
  cursor: pointer;
  font-size: .875rem;
}
.nika-calc__modes input { accent-color: #8f6846; }
.nika-calc__modes label:has(input:checked) { border-color: #10100f; background: #ece8df; }
.nika-calc__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}
.nika-calc__grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: .8rem;
  color: rgba(16, 16, 15, .7);
}
.nika-calc__grid input,
.nika-calc__grid select {
  min-height: 46px;
  border: 1px solid rgba(16, 16, 15, .2);
  padding: 0 12px;
  font-size: .95rem;
  background: #fff;
  color: #10100f;
}
.nika-calc__grid input:focus-visible,
.nika-calc__grid select:focus-visible,
.nika-calc button:focus-visible {
  outline: 3px solid #10100f;
  outline-offset: 2px;
}
.nika-calc__note {
  margin: 14px 0 0;
  font-size: .8rem;
  line-height: 1.6;
  color: rgba(16, 16, 15, .62);
}
.nika-calc__actions { margin-top: 20px; }
.nika-calc button[data-nika-calculate] {
  min-height: 48px;
  padding: 0 26px;
  border: 0;
  background: #c7aa7a;
  color: #10100f;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease;
}
.nika-calc button[data-nika-calculate]:hover { background: #8f6846; color: #fff; }
.nika-calc__results {
  margin-top: 24px;
  border-top: 1px solid rgba(16, 16, 15, .12);
  padding-top: 20px;
}
.nika-calc__results dl {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  margin: 0;
}
.nika-calc__results dt {
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(16, 16, 15, .55);
}
.nika-calc__results dd {
  margin: 4px 0 0;
  font-family: Prata, serif;
  font-size: 1.35rem;
  line-height: 1.2;
}
.nika-calc__error { margin: 0; color: #a23b2f; font-size: .9rem; }
@media (max-width: 640px) {
  .nika-calc { padding: 18px; }
  .nika-calc__modes label { width: 100%; }
}