.fd-calc {
  background: var(--fd-surface);
  border: 1px solid var(--fd-border);
  border-radius: var(--fd-radius);
  padding: 20px;
  margin: 8px 0 24px;
}

.fd-calc-layout {
  display: grid;
  gap: 24px;
}

@media (min-width: 1024px) {
  .fd-calc-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .fd-calc,
  .fd-result {
    position: sticky;
    top: 16px;
  }
}

.fd-input-unit {
  display: flex;
  align-items: stretch;
}

.fd-input-unit input {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-right: 0;
}

.fd-unit {
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  background: var(--fd-row);
  border: 1px solid var(--fd-border);
  border-radius: 0 6px 6px 0;
  color: var(--fd-muted);
  min-width: 52px;
  justify-content: center;
  font-variant-numeric: tabular-nums;
}

.fd-check {
  font-weight: 400 !important;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
}

.fd-check input {
  width: 20px;
  height: 20px;
  min-height: 20px;
}

.fd-hint {
  margin: 6px 0 0;
  color: var(--fd-muted);
  font-size: 0.85rem;
  font-weight: 400;
}

.fd-req {
  color: var(--fd-error);
}

.fd-calc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.fd-result {
  background: var(--fd-surface);
  border: 1px solid var(--fd-accent);
  border-radius: var(--fd-radius);
  padding: 20px;
  margin-bottom: 24px;
}

.fd-result[hidden] {
  display: none !important;
}

.fd-result-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.fd-result-head h2 {
  margin: 0;
}

.fd-result-body {
  font-variant-numeric: tabular-nums;
}

.fd-kpi {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 0 0 16px;
}

.fd-kpi div {
  background: var(--fd-row);
  border-radius: 6px;
  padding: 12px;
}

.fd-kpi span {
  display: block;
  color: var(--fd-muted);
  font-size: 0.85rem;
}

.fd-kpi strong {
  font-size: 1.4rem;
  font-weight: 600;
}

.fd-note {
  color: var(--fd-muted);
  font-size: 0.95rem;
}

.fd-warn {
  border-left: 3px solid var(--fd-error);
  padding: 8px 12px;
  background: #f7ecec;
  margin: 12px 0;
}

@media (max-width: 320px) {
  .fd-calc {
    padding: 12px;
  }

  .fd-input-unit {
    flex-direction: column;
  }

  .fd-input-unit input,
  .fd-unit {
    border-radius: 6px;
    border: 1px solid var(--fd-border);
  }

  .fd-calc-actions .fd-btn {
    width: 100%;
  }
}