Card with Animated Border built with Jetpack Compose.

AnimatedBorderCard.kt

@Composable
fun AnimatedBorderCard(
    modifier: Modifier = Modifier,
    shape: Shape = RoundedCornerShape(size = 0.dp),
    borderWidth: Dp = 2.dp,
    gradient: Brush = Brush.sweepGradient(listOf(Color.Gray, Color.White)),
    animationDuration: Int = 10000,
    onCardClick: () -> Unit = {},
    content: @Composable () -> Unit
) {
    val infiniteTransition = rememberInfiniteTransition(label = "Infinite Color Animation")
    val degrees by infiniteTransition.animateFloat(
        initialValue = 0f,
        targetValue = 360f,
        animationSpec = infiniteRepeatable(
            animation = tween(durationMillis = animationDuration, easing = LinearEasing),
            repeatMode = RepeatMode.Restart
        ),
        label = "Infinite Colors"
    )

    Surface(
        modifier = modifier.clickable { onCardClick() },
        shape = shape
    ) {
        Surface(
            modifier = Modifier
                .fillMaxWidth()
                .padding(borderWidth)
                .drawWithContent {
                    rotate(degrees = degrees) {
                        drawCircle(
                            brush = gradient,
                            radius = size.width,
                            blendMode = BlendMode.SrcIn,
                        )
                    }
                    drawContent()
                },
            color = MaterialTheme.colorScheme.surface,
            shape = shape
        ) {
            content()
        }
    }
}