body {
  background-color: #121212;
  color: #e0e0e0;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  text-align: center;
}

.container {
  max-width: 500px;
  margin: 60px auto;
  padding: 20px;
  background-color: #1e1e1e;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0,0,0,0.5);
}

input[type="number"] {
  padding: 10px;
  margin: 10px 0;
  width: 80%;
  border-radius: 5px;
  border: none;
  font-size: 16px;
}

button {
  padding: 10px 20px;
  margin: 8px;
  border: none;
  border-radius: 6px;
  background-color: #00bcd4;
  color: #fff;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background-color: #0097a7;
}

footer {
  margin-top: 20px;
  font-size: 14px;
  color: #aaa;
}

a {
  color: #00bcd4;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

#statusMessage {
  margin-top: 15px;
  font-weight: bold;
}