* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #333;
}

.game-container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    padding: 20px;
    max-width: 800px;
    width: 100%;
}

.game-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}

h1 {
    color: #4CAF50;
    margin-bottom: 15px;
}

.score-container {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 15px;
}

#score {
    color: #4CAF50;
}

.controls {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

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

#reset-btn {
    background-color: #f44336;
}

#reset-btn:hover {
    background-color: #d32f2f;
}

#game-board {
    background-color: #222;
    border-radius: 5px;
    display: block;
    margin: 0 auto;
    max-width: 100%;
}

.game-instructions {
    margin-top: 20px;
    text-align: center;
}

.game-instructions h2 {
    color: #4CAF50;
    margin-bottom: 10px;
}

.game-instructions p {
    margin-bottom: 5px;
}

@media (max-width: 600px) {
    .game-container {
        padding: 10px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .score-container {
        font-size: 1.2rem;
    }
    
    button {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
}