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    MaterialTheme(
        colorScheme = colorScheme,
        typography = Typography,
        content = content
    )

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val colorScheme = when {
        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
            val context = LocalContext.current
            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
        }
        darkTheme -> DarkColorScheme
        else -> LightColorScheme
    }

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class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MaterialTheme {
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {
                    LazyColumn(){

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import androidx.compose.foundation.layout.*
import androidx.compose.material3.*
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

@ExperimentalMaterial3Api

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@ExperimentalMaterial3Api
@Composable
fun ItemView() {
    Card( // Material 3'te Card şuan betada 
        modifier = Modifier.padding(8.dp),
        colors = CardDefaults.cardColors(
            containerColor = MaterialTheme.colorScheme.surface, // Burada kart kullandığımız için Material Design surface rengini kullanmamız gerektiğini söylüyor
        ),
        shape = MaterialTheme.shapes.large,
    ) {

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@Composable
fun MaterialTheme(
    darkTheme: Boolean = isSystemInDarkTheme(),
    // Dynamic color android 12 ve üstü için geçerli
    dynamicColor: Boolean = true,
    content: @Composable () -> Unit
) {
    val colorScheme = when {
        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
            val context = LocalContext.current

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private val LightColorScheme = lightColorScheme(
    background = lightBackground,
    primary = lightPrimary,
    secondary = lightSecondary,
    surface = lightSurface,
    onSurface = lightOnSurface
)

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private val DarkColorScheme = darkColorScheme(
    background = darkBackground,
    primary = darkPrimary,
    secondary = darkSecondary,
    surface = darkSurface,
    onSurface = darkOnSurface
)

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val Typography = Typography(
    bodyLarge = TextStyle(
        fontFamily = FontFamily.Default,
        fontWeight = FontWeight.Normal,
        fontSize = 16.sp,
        lineHeight = 24.sp,
        letterSpacing = 0.5.sp
    ),
    titleLarge = TextStyle(
        fontFamily = FontFamily.Default,

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val lightPrimary = Color(0xFFA784F7)
val lightSecondary = Color(0xFF9B75F3)
val lightBackground = Color(0xFFC2AEF0)
val lightSurface = Color(0xFFA27EF0)
val lightOnSurface = Color(0xFF564481)


val darkPrimary = Color(0xFF100035)
val darkSecondary = Color(0xFF1F0166)
val darkBackground = Color(0xFF1D005F)