body {
    font-family: 'Open Sans', sans-serif;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
}

#lockButton {
    background-color: #007bff;
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    font-size: 16px;
    letter-spacing: 1px;
    margin-top: 20px;
    box-shadow: 0 4px 8px rgba(0,123,255,0.3);
}

#lockButton:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}


@keyframes gentleBounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

#alertBox {
    position: fixed;
    top: 30%;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(255, 255, 255, 0.8);
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0,0,0,0.2);
    z-index: 1000;
    animation: gentleBounce 2s ease-in-out infinite;
}

#soundButton {
    position: fixed;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
}

#soundIcon {
    width: 36px;
    height: auto;
}