body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  color: #fff;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
  background-color: rgba(0,0,0,0.6);
  padding: 40px;
  border-radius: 15px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

h1 {
  margin-bottom: 10px;
  font-size: 2rem;
  letter-spacing: 1px;
}

.instructions {
  font-size: 1rem;
  margin-bottom: 20px;
}

.signal-area {
  background-color: #444;
  height: 150px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 15px;
  margin-bottom: 30px;
  font-size: 1.5rem;
  transition: background-color 0.3s ease;
}

.scores {
  display: flex;
  justify-content: space-around;
  margin-bottom: 20px;
}

.player-score h2 {
  margin: 0;
  font-size: 1.2rem;
}

.player-score span {
  font-size: 2rem;
  display: block;
  margin-top: 5px;
}

.controls button {
  padding: 10px 20px;
  margin: 0 10px;
  border: none;
  border-radius: 10px;
  background-color: #ffdd57;
  color: #000;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s ease;
}

.controls button:hover {
  background-color: #ffc107;
}

#message {
  margin-top: 20px;
  font-size: 1.2rem;
  font-weight: bold;
}