body {
  font-family: Arial, sans-serif;
  max-width: 500px;
  margin: 0 auto;
  padding: 20px;
  background: #f5f7fa;
}

.container {
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

input {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 16px;
}

button {
  background: #4CAF50;
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  width: 100%;
  margin-top: 10px;
}

button:disabled {
  background: #cccccc;
}

.status {
  margin: 20px 0;
  padding: 10px;
  background: #f8f9fa;
  border-radius: 5px;
}

#result {
  margin-top: 15px;
  padding: 10px;
  border-radius: 5px;
}

.error {
  background: #ffebee;
  color: #c62828;
}

.success {
  background: #e8f5e9;
  color: #2e7d32;
}