.calc-form {
  max-width: 480px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 6px;
}

.mode-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.mode-toggle label {
  flex: 1;
  text-align: center;
  padding: 10px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.mode-toggle input[type="radio"] {
  display: none;
}

.mode-toggle input[type="radio"]:checked + label {
  border-color: var(--color-primary);
  background: #eef2ff;
  color: var(--color-primary);
  font-weight: 600;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-size: 16px;
  transition: border-color 0.2s;
  color: var(--color-text);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.form-select {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-size: 16px;
  background: white;
  color: var(--color-text);
}

.calc-btn {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 14px;
  border-radius: 10px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  margin-top: 8px;
  transition: background 0.2s, transform 0.1s;
}

.calc-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.calc-btn:active {
  transform: translateY(0);
}

.calc-result {
  display: none;
  margin-top: 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.result-net {
  background: #eef2ff;
  border: 2px solid var(--color-primary);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  margin-bottom: 16px;
}

.result-net .label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.result-net .amount {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
}

.result-net .unit {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-muted);
}

.result-net .rate {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
}

.result-table th,
.result-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.result-table th {
  color: var(--color-text-muted);
  font-weight: 500;
}

.result-table td {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.result-table tr.total {
  font-weight: 700;
  border-top: 2px solid var(--color-text);
}

.result-table tr.total td {
  color: var(--color-text);
}

.result-table .deduction td {
  color: #dc2626;
}

.result-table .deduction td::before {
  content: '-';
}

.result-note {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 12px;
  text-align: center;
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}