diff --git a/.tmux.conf b/.tmux.conf
index 785a9352..072917a6 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -2,7 +2,20 @@
 set -g bell-action any
 
 # Default termtype. If the rcfile sets $TERM, that overrides this value.
-set -g default-terminal screen-256color
+set -g default-terminal "tmux-256color"
+
+# Truecolor + clipboard passthrough for outer terminals that advertise RGB
+# (covers xterm-*, alacritty, kitty, wezterm, iTerm, ghostty, modern Apple Terminal).
+set -ga terminal-features ",xterm-256color:RGB"
+set -ga terminal-features ",alacritty:RGB"
+set -ga terminal-features ",kitty:RGB"
+set -ga terminal-features ",wezterm:RGB"
+set -ga terminal-features ",ghostty:RGB"
+set -ga terminal-features ",screen-256color:RGB"
+
+# TUI apps (Claude Code, nvim, etc.) want focus events so they can redraw
+# / refresh state when the pane regains focus.
+set -g focus-events on
 
 # Keep your finger on ctrl, or don't
 bind-key ^D detach-client