Update app.py

app.py

@@ -76,7 +76,7 @@ html, body {
     margin: 0;
     padding: 0;
     height: 100%;
-    background: #1a1a1a;
+    background: #0a0a0a;
     color: #ffffff;
     font-family: 'Inter', ui-sans-serif, system-ui;
     -webkit-font-smoothing: antialiased;
@@ -87,7 +87,7 @@ html, body {
     display: flex;
     flex-direction: column;
     height: 100vh;
-    background: #1a1a1a;
+    background: #0a0a0a;
     color: #ffffff;
     overflow-y: auto;
 }
@@ -111,6 +111,13 @@ footer, .api-panel {
     flex-shrink: 0;
 }
 
+.chatbot .message-avatar img {
+    padding: 0;
+    object-fit: cover;
+    overflow: hidden;
+    flex-shrink: 0;
+}
+
 .chatbot .message {
     display: flex;
     align-items: center;