body {
  background-color: #121212;
  color: #00ffff;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: 50px auto;
  padding: 30px;
  background-color: #1e1e1e;
  border-radius: 10px;
  box-shadow: 0 0 20px #00ffff44;
  text-align: center;
}

h1 {
  color: #00ffff;
}

.checklist {
  text-align: left;
  margin-bottom: 20px;
  padding: 10px;
  border: 1px solid #00ffff33;
  border-radius: 5px;
  columns: 2;
}

.checklist label {
  display: block;
  margin-bottom: 8px;
  cursor: pointer;
}

button {
  background-color: #00ffff;
  color: #121212;
  padding: 10px 20px;
  margin: 5px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  font-size: 16px;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #00cccc;
}

.result {
  margin-top: 30px;
  font-size: 26px;
  font-weight: bold;
  color: #ffffff;
}