.batch-cost-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

.batch-cost-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 860px) {
  .batch-cost-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--card-bg);
  padding: 24px;
}

.card-title {
  margin: 0 0 18px 0;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.form-row {
  margin-bottom: 16px;
}

.form-row.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-row label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-row input[type="number"],
.form-row select {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.form-row input[type="range"] {
  width: 100%;
  accent-color: var(--primary-color);
}

.range-value {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.range-value span {
  color: var(--accent-color);
  font-weight: 600;
}

.batch-cost-warning {
  background: rgba(240, 173, 78, 0.12);
  border: 1px solid var(--warning-color);
  color: var(--warning-color);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.batch-cost-warning.hidden {
  display: none;
}

.result-compare {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.result-box {
  flex: 1;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  background: var(--bg-color);
}

.realtime-box {
  border-color: var(--danger-color);
}

.batch-box {
  border-color: var(--success-color);
}

.result-label {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.result-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

.result-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.vs-arrow {
  font-size: 1.4rem;
  color: var(--text-tertiary);
}

.savings-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  padding: 18px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: linear-gradient(135deg, rgba(52, 199, 89, 0.08), rgba(0,0,0,0));
}

.savings-metric {
  text-align: center;
}

.savings-figure {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--success-color);
}

.savings-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.breakdown-table th,
.breakdown-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.breakdown-table th {
  color: var(--text-tertiary);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.breakdown-table td:first-child {
  color: var(--text-primary);
  font-weight: 600;
}

@media (max-width: 520px) {
  .result-compare {
    flex-direction: column;
  }
  .vs-arrow {
    transform: rotate(90deg);
  }
  .savings-panel {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}