AnimatedBorder.kt

@Composable
    fun AnimatedBorderCard(
        modifier: Modifier,
        contents: @Composable RowScope.() -> Unit
    ) {
        val containerSize = 200.dp
        var offsetFloat by remember { mutableStateOf(0f) }
        LaunchedEffect(null) {
            delay(100)
            offsetFloat = containerSize.value * 10f
        }
        val offset by animateFloatAsState(
            targetValue = offsetFloat,
            animationSpec = repeatable(
                iterations = 4,
                animation = tween(durationMillis = 6000, easing = LinearEasing),
            ),
        )

        val brush = Brush.linearGradient(
            shineColors,
            start = Offset(offset, offset),
            end = Offset(offset + containerSize.value * 40, offset + containerSize.value * 40),
            tileMode = TileMode.Repeated
        )

        Box(modifier = modifier.fillMaxSize()) {
            Row(
                modifier = Modifier
                    .fillMaxSize()
                    .clip(RoundedCornerShape(24.dp))
                    .border(
                        width = 2.5.dp, brush = brush, shape = RoundedCornerShape(24.dp)
                    )
                    .background(Color(0xFFA9A9A9))
                    .blur(2.dp),
            ) {
                contents()
            }
        }
    }
    
    
    private val shineColors = listOf(
        Color.White,
        Color(0xFFF5C344),
    )