body {
    margin: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(to bottom, #8B0000, #FF4500);
    font-family: 'Arial', sans-serif;
    overflow: hidden;
}

#gameTitle {
    font-size: 80px;
    color: #FF4500;
    text-shadow: 3px 3px 8px rgba(0, 0, 0, 0.7);
    margin-bottom: 20px;
}

#difficultySelection {
    text-align: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.7);
}

#difficultySelection h2 {
    font-size: 25px;
    color: #333;
    margin-bottom: 20px;
}

#difficultySelection button {
    background-color: #FF4500;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 20px;
    border-radius: 5px;
    cursor: pointer;
    margin: 10px;
    transition: background-color 0.3s, transform 0.2s;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

#difficultySelection button:hover {
    background-color: #FF6347;
    transform: scale(1.05);
}

canvas {
    border: 4px solid #000;
    border-radius: 15px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.8);
    display: none;
}

#gameOverScreen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(to bottom, #8B0000, #FF4500);
    color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    display: none;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.7);
}

#gameOverScreen h1 {
    font-size: 40px;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

#gameOverScreen p {
    font-size: 26px;
    margin: 10px 0;
    font-weight: bold;
}

#restartButton {
    background-color: #FF5733;
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

#restartButton:hover {
    background-color: #C70039;
    transform: scale(1.05);
}

#restartButton:active {
    transform: scale(0.95);
}

.hidden {
    display: none;
}

#score, #level {
    position: absolute;
    font-size: 20px;
    color: #333;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 5px;
    padding: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
}

#score {
    top: 10px;
    left: 10px;
}

#level {
    top: 10px;
    right: 10px;
}