What is the most complex interface you have implemented using Jetpack Compose?

One of the most complex interfaces I have implemented using Jetpack Compose was a screen with a dynamic list, where items could change their state and appearance depending on user actions and network data.

For example, I created a custom list with animations when adding and removing items, support for drag-and-drop, and real-time data updates. To achieve this, I used Compose features such as LazyColumn for the list, animate*AsState for smooth transitions, and remember to preserve state.

An example of a simple animated item:

@Composable
fun AnimatedItem(selected: Boolean) {
    val backgroundColor by animateColorAsState(
        targetValue = if (selected) Color.Blue else Color.Gray
    )
    Box(
        modifier = Modifier
            .size(100.dp)
            .background(backgroundColor)
    )
}