body {
  font-family: Arial, sans-serif;
  background: #0d1117;
  color: #f0f6fc;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}
.container {
  text-align: center;
  background: #161b22;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
}
input {
  width: 300px;
  padding: 10px;
  margin-top: 1rem;
  font-size: 1rem;
}
button {
  margin-top: 1rem;
  padding: 10px 20px;
  font-size: 1rem;
  background: #238636;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
a#download {
  display: inline-block;
  margin-top: 1.5rem;
  background: #1f6feb;
  padding: 10px 20px;
  color: white;
  text-decoration: none;
  border-radius: 5px;
}