Create static/styles.css

static/styles.css

@@ -0,0 +1,24 @@
+# static/styles.css
+/* Google Notebook LM style CSS */
+.main {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 2rem;
+}
+
+.stChatMessage {
+    background-color: white;
+    border-radius: 8px;
+    padding: 1rem;
+    margin: 1rem 0;
+    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
+}
+
+.stTextArea {
+    border: 1px solid #e0e0e0;
+    border-radius: 8px;
+}
+
+.stButton>button {
+    border-radius: 20px;
+}