.calculator-wrapper {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 24px;
  margin-top: 2rem;
}

.calculator-form {
  display: grid;
  gap: 18px;
}

.form-section {
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 18px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.form-section h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
}

#calculate-btn {
  border: none;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 1rem;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#calculate-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.calculator-results {
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 18px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.calculator-results h2 {
  margin-top: 0;
}

.calculator-results p {
  display: flex;
  justify-content: space-between;
  margin: 12px 0;
  color: var(--muted);
}

.calculator-results span {
  color: var(--text);
  font-weight: 600;
}

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