diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7d925c9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,15 @@
+# Temporary files
+*.tmp
+*.temp
+
+# Python cache
+__pycache__/
+*.pyc
+*.pyo
+
+# PDF generation script (utility)
+generate_cover_letter.py
+
+# OS files
+.DS_Store
+Thumbs.db
\ No newline at end of file
diff --git a/LLM4ChipDesign_Cover_Letter.pdf b/LLM4ChipDesign_Cover_Letter.pdf
new file mode 100644
index 0000000..609d9ad
Binary files /dev/null and b/LLM4ChipDesign_Cover_Letter.pdf differ