feat(chat): created basic chat layout

src/components/ui/MessageInput.jsx

@@ -0,0 +1,31 @@
+import React, { useState } from "react";
+
+export default function MessageInput({ onSend }) {
+  const [text, setText] = useState("");
+
+  function handleSubmit(e) {
+    e.preventDefault();
+    if (!text.trim()) return;
+    onSend(text.trim());
+    setText("");
+  }
+
+  return (
+    <form onSubmit={handleSubmit} className="p-3 bg-slate-900">
+      <div className="flex gap-2">
+        <input
+          value={text}
+          onChange={(e) => setText(e.target.value)}
+          placeholder="Type a message..."
+          className="flex-1 rounded-md bg-slate-800 border border-slate-700 px-3 py-2 text-white focus:outline-none focus:ring-2 focus:ring-indigo-500"
+        />
+        <button
+          type="submit"
+          className="bg-indigo-500 hover:bg-indigo-600 text-white px-4 py-2 rounded-md"
+        >
+          Send
+        </button>
+      </div>
+    </form>
+  );
+}