body {
  margin: 0;
  font-family: Segoe UI, Arial, sans-serif;
  background: #0d1117;
  color: #e6edf3;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
  background: #161b22;
  padding: 40px;
  border-radius: 10px;
  border: 1px solid #30363d;
  width: 350px;
}

input {
  width: 100%;
  padding: 10px;
  margin-top: 15px;
  border-radius: 6px;
  border: 1px solid #30363d;
  background: #0d1117;
  color: white;
  text-align: center;
  font-family: monospace;
}

button {
  margin-top: 15px;
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 6px;
  background: #238636;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #2ea043;
}