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

body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    font-family: Arial, sans-serif;
    background-repeat: no-repeat;
    background-size: cover;
}

/* Container for the canvas */
#gameBox {
    position: relative;
    width: 100%;
    height: 100%;
}

/* Touch arrow controls (invisible but functional) */
.arrow {
    position: absolute;
    width: 25%;
    height: 25%;
    opacity: 0; /* Make invisible but still clickable */
    z-index: 10;
}

/* Touch arrow positions */
#uArrow {
    top: 0;
    left: 25%;
}

#dArrow {
    bottom: 0;
    left: 25%;
}

#lArrow {
    left: 0;
    top: 25%;
}

#rArrow {
    right: 0;
    top: 25%;
}