body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1100px;
  margin: 20px auto;
  padding: 10px;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

.card {
  background: #ffffff;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card h2 {
  margin-top: 0;
}

label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
}

input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  padding: 6px;
  margin-top: 4px;
  box-sizing: border-box;
}

button {
  padding: 6px 12px;
  margin-top: 6px;
  cursor: pointer;
  border-radius: 4px;
  border: 1px solid #007bff;
  background: #007bff;
  color: white;
}

button.selected {
  background: #0056b3;
}

ul#clientResults {
  list-style: none;
  padding-left: 0;
  margin-top: 8px;
}

ul#clientResults li {
  padding: 4px 6px;
  cursor: pointer;
  border-radius: 4px;
}

ul#clientResults li:hover {
  background: #eee;
}

ul#clientResults li.selected {
  background: #007bff;
  color: white;
}

.columns {
  display: flex;
  gap: 12px;
}

.columns > div {
  flex: 1;
}

.item-option {
  display: block;
  margin-bottom: 4px;
}

.addon-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.addon-row input[type="number"] {
  width: 60px;
}

.payment-option {
  display: inline-block;
  margin-right: 10px;
}

.hidden {
  display: none;
}

.hint {
  font-size: 12px;
  color: #777;
}

#resultMessage {
  margin-top: 8px;
  cursor: pointer;
}

#resultMessage.success {
  color: green;
}

#resultMessage.error {
  color: red;
}