body {
  font-family: "Courier New", Courier, monospace;
  background-color: #0d1117;
  color: #c9d1d9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  background-color: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 0 20px #58a6ff20;
  text-align: center;
  max-width: 400px;
  width: 100%;
}

input {
  padding: 0.6rem;
  width: 80%;
  margin-bottom: 1rem;
  background-color: #0d1117;
  border: 1px solid #30363d;
  color: #c9d1d9;
  font-family: monospace;
}

button {
  padding: 0.6rem 1.2rem;
  background-color: #238636;
  color: #ffffff;
  border: none;
  font-family: monospace;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background-color: #2ea043;
}

#result {
  margin-top: 1rem;
  font-weight: bold;
  color: #58a6ff;
  white-space: pre-wrap;
}