diff --git a/main/index.php b/main/index.php
index f23c27d..cd71bbe 100644
--- a/main/index.php
+++ b/main/index.php
@@ -79,6 +79,8 @@ try {
 <html>
 <head>
     <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline';">
     <title>Text0Nly</title>
     <link rel="stylesheet" href="styles.css">
 </head>
diff --git a/main/styles.css b/main/styles.css
index 3dc6833..c3cdf97 100644
--- a/main/styles.css
+++ b/main/styles.css
@@ -216,13 +216,40 @@ button:hover {
     
     .container {
         padding: 0;
+        height: 100dvh;
     }
     
     .message {
         padding: 8px;
+        margin: 4px 0;
     }
     
     .chat-container {
         padding: 8px;
     }
+
+    .header h1 {
+        font-size: 1.8em;
+    }
+
+    button {
+        width: 100%;
+        padding: 12px;
+        font-size: 1.1em;
+    }
+
+    input[type="text"], textarea {
+        font-size: 16px;
+        padding: 12px;
+    }
+}
+
+@media (max-width: 400px) {
+    .header h1 {
+        font-size: 1.5em;
+    }
+    
+    .message {
+        font-size: 0.95em;
+    }
 }
