diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..c353d08
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,19 @@
+# Normalise line endings: LF in repo, native on checkout
+* text=auto
+
+# Force CRLF on checkout for Windows source files
+*.cs    text eol=crlf
+*.xaml  text eol=crlf
+*.csproj text eol=crlf
+*.sln   text eol=crlf
+*.json  text eol=crlf
+*.txt   text eol=crlf
+*.md    text eol=crlf
+*.csv   text eol=crlf
+
+# Binaries — no line-ending conversion
+*.png   binary
+*.jpg   binary
+*.ico   binary
+*.dll   binary
+*.exe   binary