diff --git a/lua/settings.lua b/lua/settings.lua
index 84cc889..c416555 100644
--- a/lua/settings.lua
+++ b/lua/settings.lua
@@ -5,6 +5,24 @@ vim.g.loaded_ruby_provider = 0
 vim.g.loaded_perl_provider = 0
 vim.g.loaded_node_provider = 0
 
+-- Auto-detect system theme (Linux/GNOME)
+local function set_background_from_system()
+  local handle = io.popen('gsettings get org.gnome.desktop.interface color-scheme 2>/dev/null')
+  if handle then
+    local result = handle:read("*a")
+    handle:close()
+    
+    if result:match("dark") then
+      vim.o.background = 'dark'
+    else
+      vim.o.background = 'light'
+    end
+  end
+end
+
+-- Set background based on system theme on startup
+set_background_from_system()
+
 -- Store initial working directory as project root
 -- Used by netrw navigation to return to project root after following symlinks
 vim.g.project_root = vim.fn.getcwd()
diff --git a/spell/en.utf-8.add b/spell/en.utf-8.add
index ad33cab..197c5fe 100644
--- a/spell/en.utf-8.add
+++ b/spell/en.utf-8.add
@@ -783,3 +783,7 @@ param
 int
 bool
 #/!
+bspwm
+composable
+XDG
+configs
diff --git a/spell/en.utf-8.add.spl b/spell/en.utf-8.add.spl
index 3890753..141f456 100644
Binary files a/spell/en.utf-8.add.spl and b/spell/en.utf-8.add.spl differ