body {
  background: linear-gradient(180deg, #1e293b, #0f172a);
  font-family: Arial, sans-serif;
  color: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  text-align: center;
  background-color: #1e1e2f;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0,0,0,0.4);
  width: 300px;
}

h1 {
  margin-bottom: 10px;
}

input {
  padding: 0.5rem;
  font-size: 1rem;
  width: 150px;
  text-align: center;
}

button {
  padding: 0.5rem 1rem;
  margin: 0.5rem;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: 0.2s;
}

button:hover {
  background: #1d4ed8;
}

button.reset {
  background: #ef4444;
}

button.reset:hover {
  background: #b91c1c;
}

#message {
  margin-top: 1rem;
  font-weight: bold;
}

.scoreboard {
  margin-top: 1rem;
  color: #a5b4fc;
}