right align

app.py

@@ -6,6 +6,7 @@ st.markdown("""
     .main {
         background-color: #f4f6f7;
     }
+
     .stChatMessage {
         background-color: #e8f0fe;
         border-radius: 12px;
@@ -15,13 +16,48 @@ st.markdown("""
         text-align: right;
         font-family: 'Tahoma', sans-serif;
     }
+
     .stMarkdown, .stTextInput, .stTextArea {
         direction: rtl !important;
         text-align: right !important;
+        font-family: 'Tahoma', sans-serif;
+    }
+
+    .center-header {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        justify-content: center;
+        margin-bottom: 30px;
+    }
+
+    .center-header img {
+        width: 150px; /* اندازه بزرگ‌تر برای لوگو */
+        height: auto;
+        border-radius: 20px;
+        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
+        margin-bottom: 10px;
+    }
+
+    .center-header h1 {
+        font-size: 28px;
+        font-weight: bold;
+        color: #2c3e50;
+        font-family: 'Tahoma', sans-serif;
+        text-align: center;
+        margin: 0;
     }
     </style>
 """, unsafe_allow_html=True)
 
+st.markdown("""
+    <div class="center-header">
+        <img src="https://your-logo-url.com/logo.png" alt="لوگو">
+        <h1>اسم اپلیکیشن یا شرکت شما</h1>
+    </div>
+""", unsafe_allow_html=True)
+
+
 from langchain.document_loaders import PyPDFLoader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.embeddings.base import Embeddings