Update app.py

app.py

@@ -273,13 +273,18 @@ with gr.Blocks(theme=theme, css="""
        .custom-textbox {
            min-width: 250px;
        }
-       .custom-textbox input,
-       .custom-textbox textarea {
-           padding: 12px 15px !important;
-           font-size: 14px !important;
-           min-height: 45px !important;
-           height: 45px !important;
-       }
+        .custom-textbox textarea {
+            border-radius: 12px !important;
+            border: 1pt solid #64748b !important;  /* 1pt slate border */
+            padding: 15px 20px !important;
+            font-size: 16px !important;
+            background: white !important;
+            outline: none !important;
+            box-shadow: 0 2px 4px rgba(0,0,0,0.1) !important;
+            transition: all 0.3s ease !important;
+            min-height: 100px !important; 
+            resize: vertical !important; 
+}
    }
    
    @media (min-width: 769px) and (max-width: 1024px) {
@@ -324,13 +329,13 @@ with gr.Blocks(theme=theme, css="""
        
        with gr.Row(elem_classes=["input-row"]):
            msg = gr.Textbox(
-               placeholder="Ask me about math, research, study strategies, or any educational topic...",
-               container=False,
-               show_label=False,
-               elem_classes=["custom-textbox"],
-               lines=1,
-               max_lines=1
-           )
+            placeholder="Ask me about math, research, study strategies, or any educational topic...",
+            container=False,
+            show_label=False,
+            elem_classes=["custom-textbox"],
+            lines=4,       
+            max_lines=8     
+            )
            send_btn = gr.Button("📤", variant="primary", elem_classes=["send-button"])
    
    def respond_and_update(message, history):