body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

#loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 20px;
    border-radius: 10px;
    font-family: Arial, sans-serif;
    text-align: center;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

/* Ensure AR.js scene is below the loading message */
.a-enter-vr {
    z-index: 9998;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 20px rgba(0, 0, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 0, 255, 0.8);
    }
    100% {
        box-shadow: 0 0 20px rgba(0, 0, 255, 0.5);
    }
}