body {
  font-family: Arial, sans-serif;
  padding: 20px;
  margin: 0;
  background: #f7f7f7;
}

.container {
  max-width: 500px;
  margin: auto;
  background: #ffffff;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  text-align: center;
}

h1 {
  margin-bottom: 20px;
}

input[type="text"] {
  width: 100%;
  padding: 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
  margin-bottom: 15px;
  font-size: 16px;
}

button {
  width: 100%;
  padding: 10px;
  background-color: #007bfc;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  margin-bottom: 10px;
}

button:hover {
  background-color: #005bb5;
}

#qrcode {
  margin: 20px auto;
}

#downloadBtn {
  background-color: #28a745;
}

#downloadBtn:hover {
  background-color: #1e7e34;
}