diff --git a/app/src/main/java/com/rosetta/messenger/ui/components/metaball/ProfileMetaballOverlay.kt b/app/src/main/java/com/rosetta/messenger/ui/components/metaball/ProfileMetaballOverlay.kt
index 25f4b74..412ae3c 100644
--- a/app/src/main/java/com/rosetta/messenger/ui/components/metaball/ProfileMetaballOverlay.kt
+++ b/app/src/main/java/com/rosetta/messenger/ui/components/metaball/ProfileMetaballOverlay.kt
@@ -16,6 +16,7 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.offset
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.ui.graphics.RectangleShape
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
@@ -435,7 +436,10 @@ fun ProfileMetaballOverlay(
     // Don't show black metaball shapes when expanded
     val showMetaballLayer = expansionProgress == 0f
     
-    Box(modifier = modifier.fillMaxSize()) {
+    Box(modifier = modifier
+        .fillMaxSize()
+        .clip(RectangleShape)  // Clip to bounds - prevents avatar overflow when expanded
+    ) {
         // LAYER 1: Metaball shapes with blur effect (BLACK shapes only)
         // HIDDEN when expanded - only show avatar content
         if (showMetaballLayer) {
@@ -548,29 +552,29 @@ fun ProfileMetaballOverlay(
             
             if (isExpanding) {
                 // ═══════════════════════════════════════════════════════════
-                // EXPANSION MODE - плавный рост через scale
+                // EXPANSION MODE - TELEGRAM STYLE
+                // Круг растёт И СРАЗУ превращается в квадрат - ПАРАЛЛЕЛЬНО!
+                // Без задержки - всё происходит одновременно
+                // Target size = ширина экрана (квадрат на всю ширину)
                 // ═══════════════════════════════════════════════════════════
-                val targetWidth = screenWidthPx
-                val targetHeight = headerHeightPx
+                val targetSize = screenWidthPx
                 
-                // Scale от базового размера до целевого
-                val scaleX = lerpFloat(1f, targetWidth / baseSizePx, expansionProgress)
-                val scaleY = lerpFloat(1f, targetHeight / baseSizePx, expansionProgress)
+                // UNIFORM scale - одинаковый по X и Y
+                val uniformScale = lerpFloat(1f, targetSize / baseSizePx, expansionProgress)
                 
-                // Центр смещается к центру экрана/header
+                // Центр смещается к центру header блока
                 val targetCenterX = screenWidthPx / 2f
                 val targetCenterY = headerHeightPx / 2f
                 val currentCenterX = lerpFloat(avatarCenterX, targetCenterX, expansionProgress)
                 val currentCenterY = lerpFloat(avatarCenterY, targetCenterY, expansionProgress)
                 
-                // Offset для позиционирования (учитывая что scale от центра)
+                // Offset для позиционирования (scale от центра)
                 val offsetX = with(density) { (currentCenterX - baseSizePx / 2f).toDp() }
                 val offsetY = with(density) { (currentCenterY - baseSizePx / 2f).toDp() }
                 
-                // Corner radius плавно уменьшается к 0 (квадрат)
-                // Но только после 70% expansion для эффекта как в Telegram
-                val squareProgress = ((expansionProgress - 0.7f) / 0.3f).coerceIn(0f, 1f)
-                val cornerRadiusPx = lerpFloat(baseSizePx / 2f, 0f, squareProgress)
+                // Corner radius: круг → квадрат СРАЗУ, без задержки!
+                // Telegram: lerp(smallRadius, 0, expandProgress) - напрямую!
+                val cornerRadiusPx = lerpFloat(baseSizePx / 2f, 0f, expansionProgress)
                 val cornerRadiusDp = with(density) { cornerRadiusPx.toDp() }
                 
                 Box(
@@ -579,8 +583,8 @@ fun ProfileMetaballOverlay(
                         .width(baseSizeDp)
                         .height(baseSizeDp)
                         .graphicsLayer {
-                            this.scaleX = scaleX
-                            this.scaleY = scaleY
+                            this.scaleX = uniformScale
+                            this.scaleY = uniformScale
                             alpha = avatarState.opacity
                         }
                         .clip(RoundedCornerShape(cornerRadiusDp)),
@@ -679,7 +683,10 @@ fun ProfileMetaballOverlayCompat(
         }
     }
     
-    Box(modifier = modifier.fillMaxSize()) {
+    Box(modifier = modifier
+        .fillMaxSize()
+        .clip(RectangleShape)  // Clip to bounds - prevents avatar overflow when expanded
+    ) {
         if (avatarState.showBlob) {
             val baseSizeDp = ProfileMetaballConstants.AVATAR_SIZE_EXPANDED
             val baseSizePx = with(density) { baseSizeDp.toPx() }
@@ -688,19 +695,18 @@ fun ProfileMetaballOverlayCompat(
             val isExpanding = expansionProgress > 0f
             
             if (isExpanding) {
-                // EXPANSION MODE - scale animation
-                val targetWidth = screenWidthPx
-                val targetHeight = headerHeightPx
-                val scaleX = lerpFloat(1f, targetWidth / baseSizePx, expansionProgress)
-                val scaleY = lerpFloat(1f, targetHeight / baseSizePx, expansionProgress)
+                // EXPANSION MODE - scale + corner radius СРАЗУ без задержки
+                // Target size = ширина экрана (квадрат на всю ширину)
+                val targetSize = screenWidthPx
+                val uniformScale = lerpFloat(1f, targetSize / baseSizePx, expansionProgress)
                 val targetCenterX = screenWidthPx / 2f
                 val targetCenterY = headerHeightPx / 2f
                 val currentCenterX = lerpFloat(avatarCenterX, targetCenterX, expansionProgress)
                 val currentCenterY = lerpFloat(avatarCenterY, targetCenterY, expansionProgress)
                 val offsetX = with(density) { (currentCenterX - baseSizePx / 2f).toDp() }
                 val offsetY = with(density) { (currentCenterY - baseSizePx / 2f).toDp() }
-                val squareProgress = ((expansionProgress - 0.7f) / 0.3f).coerceIn(0f, 1f)
-                val cornerRadiusPx = lerpFloat(baseSizePx / 2f, 0f, squareProgress)
+                // Corner radius уменьшается СРАЗУ, без порога!
+                val cornerRadiusPx = lerpFloat(baseSizePx / 2f, 0f, expansionProgress)
                 val cornerRadiusDp = with(density) { cornerRadiusPx.toDp() }
                 
                 Box(
@@ -709,8 +715,8 @@ fun ProfileMetaballOverlayCompat(
                         .width(baseSizeDp)
                         .height(baseSizeDp)
                         .graphicsLayer {
-                            this.scaleX = scaleX
-                            this.scaleY = scaleY
+                            this.scaleX = uniformScale
+                            this.scaleY = uniformScale
                             alpha = avatarState.opacity
                         }
                         .clip(RoundedCornerShape(cornerRadiusDp)),
diff --git a/app/src/main/java/com/rosetta/messenger/ui/settings/ProfileScreen.kt b/app/src/main/java/com/rosetta/messenger/ui/settings/ProfileScreen.kt
index 13ecd2b..331f729 100644
--- a/app/src/main/java/com/rosetta/messenger/ui/settings/ProfileScreen.kt
+++ b/app/src/main/java/com/rosetta/messenger/ui/settings/ProfileScreen.kt
@@ -339,18 +339,19 @@ fun ProfileScreen(
     }
     
     // Telegram: duration = (1 - value) * 250ms при expand, value * 250ms при collapse
+    // Но минимизируем для мгновенного отклика
     val currentProgress = (overscrollOffset / maxOverscroll).coerceIn(0f, 1f)
     val snapDuration = if (targetOverscroll == maxOverscroll) {
-        ((1f - currentProgress) * 250).toInt().coerceIn(100, 300)
+        ((1f - currentProgress) * 150).toInt().coerceIn(50, 150)  // Рост - быстро!
     } else {
-        (currentProgress * 250).toInt().coerceIn(100, 300)
+        (currentProgress * 150).toInt().coerceIn(50, 150)  // Коллапс - тоже быстро!
     }
     
     val animatedOverscroll by animateFloatAsState(
         targetValue = targetOverscroll,
         animationSpec = tween(
             durationMillis = if (isDragging) 0 else snapDuration,
-            easing = FastOutSlowInEasing  // Telegram: CubicBezierInterpolator.EASE_BOTH
+            easing = LinearOutSlowInEasing  // Быстрый старт, плавное завершение
         ),
         label = "overscroll"
     )