.calculator-section {
  scroll-margin-top: 6rem;
}

.calculator-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: var(--space-md);
  align-items: start;
}

.calculator-form,
.calculator-results {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: 0 18px 44px var(--color-shadow);
}

.calculator-form {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-lg);
}

.calculator-fieldset {
  display: grid;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  border: 0;
}

.calculator-fieldset legend {
  margin-bottom: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.35rem;
  line-height: 1.1;
}

.calculator-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.calculator-label,
.calculator-check {
  display: grid;
  gap: var(--space-xs);
  color: var(--color-muted);
  font-size: 0.95rem;
}

.calculator-label[hidden],
.calculator-check[hidden],
[hidden] {
  display: none !important;
}

.calculator-label strong,
.calculator-check strong {
  color: var(--color-text);
  font-size: 1rem;
}

.calculator-label input,
.calculator-label select {
  width: 100%;
  min-height: 2.9rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: #fffdf8;
  color: var(--color-text);
  font: inherit;
  padding: 0.65rem 0.75rem;
}

.calculator-label input:focus,
.calculator-label select:focus {
  outline: 2px solid rgba(138, 79, 43, 0.28);
  border-color: var(--color-accent);
}

.calculator-check {
  grid-template-columns: auto 1fr;
  align-items: start;
  padding: var(--space-sm);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255, 250, 242, 0.72);
}

.calculator-check input {
  margin-top: 0.25rem;
  accent-color: var(--color-accent);
}

.calculator-help {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.calculator-results {
  position: sticky;
  top: 6rem;
  padding: var(--space-lg);
}

.calculator-total {
  margin: 0 0 var(--space-xs);
  color: var(--color-accent-dark);
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1;
}

.calculator-unit,
.calculator-discount {
  color: var(--color-muted);
}

.calculator-discount {
  display: inline-flex;
  margin: var(--space-sm) 0 var(--space-md);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  background: var(--color-surface-muted);
  font-size: 0.9rem;
}

.calculator-table-wrap {
  overflow-x: auto;
  margin: var(--space-md) 0;
}

.calculator-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.calculator-table th,
.calculator-table td {
  border-top: 1px solid var(--color-line);
  padding: 0.7rem 0.4rem;
  text-align: left;
  vertical-align: top;
}

.calculator-table td:nth-child(2) {
  white-space: nowrap;
  font-weight: 700;
}

.calculator-note {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .calculator-shell,
  .calculator-grid {
    grid-template-columns: 1fr;
  }

  .calculator-results {
    position: static;
  }
}