.checkout-form {
  background-color: white;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.checkout-form h3 {
  color: #2d5d7b;
  margin-top: 0;
  padding-bottom: 15px;
  border-bottom: 1px solid #eee;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  color: #333;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #4CAF50;
  box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.checkout-form .error {
  color: #f44336;
  font-size: 14px;
  margin-top: 5px;
}

.form-row {
  display: flex;
  gap: 15px;
}

.form-row .form-group {
  flex: 1;
}

.actions {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
}

.btn {
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.btn-primary {
  background-color: #4CAF50;
  color: white;
  border: none;
}

.btn-primary:hover {
  background-color: #3d8b40;
}

.btn-secondary {
  background-color: #f5f5f5;
  color: #333;
  border: 1px solid #ddd;
}

.btn-secondary:hover {
  background-color: #e0e0e0;
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: 0;
  }
}