#main-wrapper {
    width: 500px;
    display: flex;
    flex-direction: row;
    align-items: stretch; 
    gap: 1em;
    opacity: 0;
	align-items: center;
}

#song-info-container {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: row;
    overflow: hidden;
	align-items: center;
	border-radius: 1em;
	transition: all 1s ease-in-out;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5); /* Adds depth */

	display: grid;
    /* This creates a single cell that both children will occupy */
    grid-template-areas: "stack";
}

/* The content sits on top */
#progress-bar {
	grid-area: stack;
    position: relative;
    z-index: 2;         /* Sits above the progress bar */
	transition: all 1s ease-in-out;
	width: 100%;
	/* mask-image: linear-gradient(to right, black calc(100% - 4em), transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black calc(100% - 4em), transparent 100%); */
}

#progress-bar-track {
    transition: all 1s ease-in-out;
}

.progress {
	box-sizing: border-box;
	padding: 0.25em 0.75em;
	grid-area: stack;
	display: flex;
	/* justify-content: center; */
	min-width: 0;
}

#song-label,
#song-label-background {
	font-size: 1em;
	display: flex;
	flex-direction: row;
	align-items: baseline;
	gap: 0.5em;
	min-width: 100%;
	justify-content: var(--justify-content);
	overflow: hidden;
}

#artist-label,
#artist-label-background {
	font-size: 0.8em;
	font-weight: 400;
	opacity: 0.7;
}

#track-label,
#track-label-background {
	font-weight: 700;
}

.text-label {
    transition: opacity 0.25s ease-in-out;
}

/* Inner wrapper holding track + artist inline */
#song-label .scroll-content,
#song-label-background .scroll-content {
    display: inline-flex;
    flex-direction: row;
    align-items: baseline;
    gap: 0.5em; /* Spacing between Track and Artist */
    white-space: nowrap;
    will-change: transform;
}

/* Preserve original font weights */
.track-label {
    font-weight: 700;
}

.artist-label {
    font-size: 0.8em;
    font-weight: 400;
    opacity: 0.7;
}

/* Marquee scroll animation */
#song-label.is-overflowing .scroll-content,
#song-label-background.is-overflowing .scroll-content {
    animation: ping-pong-scroll var(--marquee-duration, 8s) linear infinite;
}

/* Mask animation applied to container */
#song-label.is-overflowing,
#song-label-background.is-overflowing {
    animation: ping-pong-mask var(--marquee-duration, 8s) linear infinite;
}