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

.start-screen, .game-container {
    text-align: center;
}

.hidden {
    display: none;
}

.start-screen button, .game-info {
    margin-bottom: 20px;
}

.target {
    width: 190px;
    height: 190px;
    background-color: red;
    border-radius: 50%;
    margin: 20px auto;
    cursor: pointer;
    transition: transform 0.2s ease;
    user-select: none; /* Impede a seleção de texto */
    position: absolute;
}

.target.clicked {
    animation: targetClickAnimation 0.3s ease;
}

@keyframes targetClickAnimation {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.score, .timer, .high-score {
    user-select: none; /* Impede a seleção de texto */
}