body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  background-color: #f5f5f5;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  color: #333;
}

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

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

textarea, input {
  width: 100%;
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-sizing: border-box;
}

textarea {
  min-height: 100px;
  resize: vertical;
}

button {
  background-color: #4CAF50;
  color: white;
  border: none;
  padding: 10px 15px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  display: block;
  width: 100%;
  margin-top: 10px;
}

button:hover {
  background-color: #45a049;
}

#qr-result {
  margin-top: 20px;
  display: none;
}

#qr-code {
  text-align: center;
  margin: 20px 0;
}

#qr-url {
  word-break: break-all;
  padding: 10px;
  background: #f9f9f9;
  border-radius: 4px;
  margin-bottom: 10px;
}

#copy-btn {
  background-color: #2196F3;
}

#copy-btn:hover {
  background-color: #0b7dda;
}