diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7dae6c4
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+# OS files
+.DS_Store
+Thumbs.db
+
+# Environment
+.env
+.gitenv
+
+# Local notes (excluded from sync)
+notes/