.chem-balance-grid {
  display: grid;
  gap: 16px;
}

.chem-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.chem-actions .button {
  flex: 0 0 auto;
}

.chem-error {
  margin-top: 8px;
  color: #b00020;
}

.chem-result {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 8px;
}

.matrix-table th,
.matrix-table td {
  border: 1px solid rgba(0, 0, 0, 0.1);
  padding: 4px 6px;
  text-align: center;
}

.matrix-table th {
  background: rgba(0, 0, 0, 0.04);
}

.verification-list {
  margin: 4px 0;
  padding-left: 16px;
}

.verification-list li.ok {
  color: #0b8043;
}

.verification-list li.warn {
  color: #b00020;
}

.known-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.known-row select,
.known-row input {
  min-width: 120px;
}

.input-small {
  width: 140px;
}

.stoich-summary {
  margin-top: 8px;
}

.stoich-steps {
  margin: 8px 0;
  padding-left: 20px;
}

.examples-panel {
  margin-top: 8px;
  padding: 8px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.03);
}

.examples-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.examples-list .button.small {
  padding: 4px 8px;
  font-size: 0.85rem;
}

.redox-equation {
  font-weight: 600;
  margin-bottom: 6px;
}

@media (min-width: 960px) {
  .chem-balance-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .chem-balance-layout .card {
    margin: 0;
  }
}