# set Ctrl+a as the prefix
set -g prefix C-a
unbind C-b
bind C-a send-prefix

# set split panes using Alt+\ for horizontal and Alt+- for vertical
bind -n M-\= split-window -h
bind -n M-\- split-window -v
unbind '"'
unbind %

# switch panes using Ctrl-Alt-arrow without prefix
bind -n C-M-Left select-pane -L
bind -n C-M-Right select-pane -R
bind -n C-M-Up select-pane -U
bind -n C-M-Down select-pane -D

# resize panes using Alt-Shift-H/J/K/L without prefix
bind -n M-H resize-pane -L 2
bind -n M-L resize-pane -R 2
bind -n M-J resize-pane -U 2
bind -n M-K resize-pane -D 2

# set "a" key to toggle broadcasting to all panes
bind a setw synchronize-panes
setw -g window-status-current-format '#{?pane_synchronized,#[bg=red],}#I:#W'
setw -g window-status-format         '#{?pane_synchronized,#[bg=red],}#I:#W'

# mouse mode (shift + left click selection to copy, shift + right click to paste)
set -g mouse on