My tmux config file

.tmux.conf

# Set prefix key to Ctrl-a
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix

# reload settings
unbind r
bind r source-file ~/.tmux.conf \; display-message "Config reloaded..."

# Ctrl-j/k cycles thru windows (no prefix)
unbind C-j
unbind C-k
bind-key -n "C-k" select-window -t :-
bind-key -n "C-j" select-window -t :+

# switch panes using Alt-arrow without prefix
bind -n M-h select-pane -L
bind -n M-l select-pane -R
bind -n M-k select-pane -U
bind -n M-j select-pane -D

# also enable vim movement bindings
set-window-option -g mode-keys vi
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# Ctrl - t new window
unbind C-t
bind-key -n C-t new-window

# enable mouse mode (tmux 2.1 and above)
set -g mouse on

# don't rename windows automatically
set-option -g allow-rename off

# colors
set -g default-terminal "screen-256color"

# start window numbering at 1 for easier switching
set -g base-index 1

# key bindings for horizontal and vertical panes
unbind %
bind | split-window -h
unbind '"'
bind - split-window -v

# listen to alerts from all windows
set -g bell-action any

######################
### DESIGN CHANGES ###
######################

# Ref: https://cassidy.codes/blog/2019-08-03-tmux-colour-theme/

# pane border
set -g pane-border-style fg='#6272a4'
set -g pane-active-border-style fg='#ff79c6'

# message text
set -g message-style bg='#44475a',fg='#8be9fd'

# status line
set -g status-style bg='#44475a',fg='#bd93f9'
set -g status-interval 1

# status left
# are we controlling tmux or the content of the panes?
set -g status-left '#[bg=#f8f8f2]#[fg=#282a36]#{?client_prefix,#[bg=#ff79c6],} ☺ '

# are we zoomed into a pane?
set -ga status-left '#[bg=#44475a]#[fg=#ff79c6] #{?window_zoomed_flag, ↕  ,   }'

# window status
set-window-option -g window-status-style fg='#bd93f9',bg=default
set-window-option -g window-status-current-style fg='#ff79c6',bg='#282a36'
set -g window-status-current-format "#[fg=#44475a]#[bg=#bd93f9]#[fg=#f8f8f2]#[bg=#bd93f9] #I #W #[fg=#bd93f9]#[bg=#44475a]"
set -g window-status-format "#[fg=#f8f8f2]#[bg=#44475a]#I #W #[fg=#44475a] "

# status right
set -g status-right '#[fg=#8be9fd,bg=#44475a]#[fg=#44475a,bg=#8be9fd] #(tmux-mem-cpu-load -g 5 --interval 2) '
set -ga status-right '#[fg=#ff79c6,bg=#8be9fd]#[fg=#44475a,bg=#ff79c6] #(uptime | cut -f 4-5 -d " " | cut -f 1 -d ",") '
set -ga status-right '#[fg=#bd93f9,bg=#ff79c6]#[fg=#f8f8f2,bg=#bd93f9] %a %H:%M:%S #[fg=#6272a4]%Y-%m-%d '