body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #1a1a1a;
    font-family: Arial, sans-serif;
    color: white;
}

.game-container {
    position: relative;
    text-align: center;
}

#gameCanvas {
    background-color: #111;
    border: 2px solid #333;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.score-board {
    display: flex;
    justify-content: space-around;
    margin-bottom: 10px;
    font-size: 20px;
}

.score {
    padding: 5px 15px;
    border-radius: 5px;
}

#playerScore {
    color: #4CAF50;
}

#aiScore {
    color: #F44336;
}

.start-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

.start-screen h1 {
    color: #4CAF50;
    margin-bottom: 20px;
}

.start-screen p {
    margin: 5px 0;
    color: #ddd;
}

.start-screen button {
    margin-top: 20px;
    padding: 10px 30px;
    font-size: 18px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.start-screen button:hover {
    background-color: #45a049;
}