update ui

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ChatScreen.kt

@@ -6,6 +6,12 @@ import android.net.Uri
 import android.speech.RecognizerIntent
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.animation.AnimatedContent
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.scaleIn
+import androidx.compose.animation.scaleOut
+import androidx.compose.animation.togetherWith
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -608,11 +614,16 @@ fun ChatInput(
             },
         )
         Spacer(modifier = Modifier.size(8.dp))
-        if (value.isNotEmpty()) {
-            FilledTonalIconButton(
+        AnimatedContent(
+            targetState = value.isNotEmpty(),
+            transitionSpec = { (scaleIn() + fadeIn()) togetherWith (scaleOut() + fadeOut()) },
+            label = "send_mic_transition"
+        ) { isNotEmpty ->
+            if (isNotEmpty) {
+                IconButton(
                     onClick = onSend,
                     modifier = Modifier.size(56.dp),
-                colors = IconButtonDefaults.filledTonalIconButtonColors(
+                    colors = IconButtonDefaults.iconButtonColors(
                         containerColor = MaterialTheme.colorScheme.surfaceVariant,
                         contentColor = MaterialTheme.colorScheme.onSurfaceVariant
                     )
@@ -626,10 +637,6 @@ fun ChatInput(
                 FilledTonalIconButton(
                     onClick = onMicClick,
                     modifier = Modifier.size(56.dp),
-                colors = IconButtonDefaults.filledTonalIconButtonColors(
-                    containerColor = MaterialTheme.colorScheme.surfaceVariant,
-                    contentColor = MaterialTheme.colorScheme.onSurfaceVariant
-                )
                 ) {
                     Icon(
                         painter = painterResource(Res.drawable.ic_audio),
@@ -638,4 +645,5 @@ fun ChatInput(
                 }
             }
         }
+    }
 }