* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Courier New", monospace;
  background-color: white;
  color: black;
  min-height: 100vh;
  padding: 20px;
  line-height: 1.4;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

h1 {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 30px;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: 4px solid black;
  padding: 20px;
  text-align: center;
}

.input-section {
  border: 3px solid black;
  padding: 25px;
  margin-bottom: 20px;
  background-color: white;
}

.input-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-weight: bold;
  margin-bottom: 8px;
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 1px;
}

input[type="text"],
textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid black;
  background-color: white;
  color: black;
  font-family: "Courier New", monospace;
  font-size: 14px;
}

input[type="text"]:focus,
textarea:focus {
  outline: none;
  border-width: 4px;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.radio-group {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-bottom: 20px;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 8px;
}

input[type="radio"] {
  width: 20px;
  height: 20px;
  accent-color: black;
}

.button {
  background-color: black;
  color: white;
  border: none;
  padding: 15px 25px;
  font-family: "Courier New", monospace;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  margin-right: 10px;
  margin-bottom: 10px;
  font-size: 14px;
}

.button:hover {
  background-color: white;
  color: black;
  border: 2px solid black;
  padding: 13px 23px;
}

.button:disabled {
  background-color: #666;
  cursor: not-allowed;
}

.button:disabled:hover {
  background-color: #666;
  color: white;
  border: none;
  padding: 15px 25px;
}

.hidden {
  display: none;
}

.contract-interface {
  border: 3px solid black;
  margin-bottom: 20px;
  background-color: white;
}

.interface-header {
  background-color: black;
  color: white;
  padding: 15px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.interface-content {
  padding: 20px;
}

.function-item {
  border: 2px solid black;
  margin-bottom: 15px;
  background-color: white;
}

.function-header {
  background-color: white;
  border-bottom: 2px solid black;
  padding: 12px;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.function-header:hover {
  background-color: #f0f0f0;
}

.function-body {
  padding: 15px;
  border-top: 1px solid black;
}

.function-body.hidden {
  display: none;
}

.parameter-input {
  margin-bottom: 10px;
}

.parameter-input label {
  margin-bottom: 5px;
  font-size: 12px;
}

.parameter-input input {
  padding: 8px;
  font-size: 12px;
}

.function-result {
  margin-top: 15px;
  padding: 12px;
  border: 2px solid black;
  background-color: #f9f9f9;
  font-family: "Courier New", monospace;
  white-space: pre-wrap;
  word-break: break-all;
}

.status {
  margin-bottom: 20px;
  padding: 12px;
  border: 2px solid black;
  font-weight: bold;
  text-transform: uppercase;
}

.status.error {
  background-color: #ffebee;
  border-color: #d32f2f;
}

.status.success {
  background-color: #e8f5e8;
  border-color: #388e3c;
}

.wallet-info {
  background-color: black;
  color: white;
  padding: 12px;
  margin-bottom: 20px;
  font-family: "Courier New", monospace;
}

.expandable-arrow {
  font-size: 18px;
  transition: transform 0.2s;
}

.expandable-arrow.expanded {
  transform: rotate(90deg);
}