feat: Enhance biometric authentication switch with animated UI and improved styling

app/src/main/java/com/rosetta/messenger/ui/settings/ProfileScreen.kt

@@ -11,6 +11,7 @@ import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.animation.*
 import androidx.compose.animation.core.*
 import androidx.compose.foundation.*
+import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.asPaddingValues
@@ -27,6 +28,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.draw.drawBehind
+import androidx.compose.ui.draw.shadow
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.graphicsLayer
@@ -1065,23 +1067,67 @@ private fun TelegramBiometricItem(
 
         Spacer(modifier = Modifier.width(20.dp))
 
+        Column(modifier = Modifier.weight(1f)) {
             Text(
                 text = "Biometric Authentication",
                 fontSize = 16.sp,
-            color = textColor,
-            modifier = Modifier.weight(1f)
+                color = textColor
             )
             
-        Switch(
-            checked = isEnabled,
-            onCheckedChange = { onToggle() },
-            colors = SwitchDefaults.colors(
-                checkedThumbColor = Color.White,
-                checkedTrackColor = primaryBlue,
-                uncheckedThumbColor = Color.White,
-                uncheckedTrackColor = if (isDarkTheme) Color(0xFF3A3A3A) else Color(0xFFE0E0E0)
+            if (isEnabled) {
+                Text(
+                    text = "Face ID / Touch ID",
+                    fontSize = 13.sp,
+                    color = textColor.copy(alpha = 0.5f),
+                    modifier = Modifier.padding(top = 2.dp)
                 )
+            }
+        }
+        
+        // iOS-style animated switch
+        val animatedThumbOffset by animateFloatAsState(
+            targetValue = if (isEnabled) 1f else 0f,
+            animationSpec = spring(
+                dampingRatio = Spring.DampingRatioMediumBouncy,
+                stiffness = Spring.StiffnessLow
+            ),
+            label = "switchThumb"
         )
+        
+        val trackColor by animateColorAsState(
+            targetValue = if (isEnabled) primaryBlue else 
+                if (isDarkTheme) Color(0xFF39393D) else Color(0xFFE9E9EA),
+            animationSpec = tween(300),
+            label = "trackColor"
+        )
+        
+        Box(
+            modifier = Modifier
+                .width(51.dp)
+                .height(31.dp)
+                .clip(RoundedCornerShape(15.5.dp))
+                .background(trackColor)
+                .clickable(
+                    interactionSource = remember { MutableInteractionSource() },
+                    indication = null,
+                    onClick = { onToggle() }
+                )
+                .padding(2.dp)
+        ) {
+            Box(
+                modifier = Modifier
+                    .size(27.dp)
+                    .align(Alignment.CenterStart)
+                    .offset(x = (20.dp * animatedThumbOffset))
+                    .shadow(
+                        elevation = if (isEnabled) 3.dp else 2.dp,
+                        shape = CircleShape,
+                        spotColor = Color.Black.copy(alpha = 0.15f)
+                    )
+                    .clip(CircleShape)
+                    .background(Color.White)
+            )
+        }
     }
 }