.tmux.conf

# ============================================================
# ~/.tmux.conf
# ============================================================

# ============================================================
# COLOR PALETTE REFERENCE
# tmux can't reliably expand user variables inside #[fg=] style
# strings, so colors are inlined below. This block is the
# single source of truth — update here, then grep-replace below.
#
#  bg_base    #121212   main background
#  bg_dark    #070707   inactive pane bg
#  bg_active  #151515   active pane bg
#  muted      #333333   borders, dim text
#
#  cyan       #81b9d4   user / active window / borders
#  purple     #c9a4e0   claude segment
#  green      #a3be8c   kernel / hostname
#  orange     #d08770   network
#  blue       #5e81ac   battery
#  snow       #d8dee9   clock
#
#  sb_purple  #3b2e4a   claude segment bg
#  sb_blue    #1e3040   user / active-window segment bg
#  sb_green   #2a2e1e   kernel segment bg
#  sb_orange  #2e2215   network segment bg
#  sb_teal    #1e2e1e   hostname segment bg
#  sb_navy    #1e2535   battery segment bg
#  sb_clock   #252525   clock segment bg
# ============================================================


# ============================================================
# VERSION-SPECIFIC COMPATIBILITY
# ============================================================
run-shell "tmux setenv -g TMUX_VERSION $(tmux -V | grep -ioP '(\\d+\\.\\d+)')"

# mouse: pre-2.1 had 4 separate options
if-shell -b '[ "$(echo "$TMUX_VERSION == 2.1" | bc)" = 1 ]' \
  "set -g mouse-select-pane on; set -g mode-mouse on; \
   set -g mouse-resize-pane on; set -g mouse-select-window on"

if-shell -b '[ "$(echo "$TMUX_VERSION >= 2.1" | bc)" = 1 ]' \
  "set -g mouse on"

# UTF8 autodetected in 2.2+
if-shell -b '[ "$(echo "$TMUX_VERSION < 2.2" | bc)" = 1 ]' \
  "set utf8 on; set -g status-utf8 on; set -g mouse-utf8 on"

# copy-mode keybinds changed in 2.4
if-shell -b '[ "$(echo "$TMUX_VERSION < 2.4" | bc)" = 1 ]' \
  "bind-key -t vi-copy v   begin-selection; \
   bind-key -t vi-copy V   send -X select-line; \
   bind-key -t vi-copy C-v rectangle-toggle; \
   bind-key -t vi-copy y   copy-pipe 'xclip -selection clipboard -in'"

if-shell -b '[ "$(echo "$TMUX_VERSION >= 2.4" | bc)" = 1 ]' \
  "set -g mode-keys vi; \
   bind-key -T copy-mode-vi v   send -X begin-selection; \
   bind-key -T copy-mode-vi V   send -X select-line; \
   bind-key -T copy-mode-vi C-v send -X rectangle-toggle; \
   bind-key -T copy-mode-vi y   send -X copy-pipe-and-cancel 'xclip -selection clipboard -in'"


# ============================================================
# COLORS
# ============================================================

# Messages / command prompt
set -g message-style                "fg=#81b9d4,bg=#121212"

# Panes
set -g window-style                 "fg=#AAAAAA,bg=#070707"
set -g window-active-style          "fg=#CCCCCC,bg=#151515"
set -g pane-border-style            "fg=#333333"
set -g pane-active-border-style     "fg=#81b9d4,bg=#151515"

# Pane number display (prefix-q)
set -g display-panes-colour         '#333333'
set -g display-panes-active-colour  '#81b9d4'

# Copy/selection mode highlight
set -g mode-style                   "bg=#81b9d4,fg=#121212"

# Clock (prefix-t)
set -g clock-mode-colour            '#a3be8c'

# Status bar base
set -g status-style                 "fg=#AAAAAA,bg=#121212"

# Window tabs — inactive
set -g window-status-style          "fg=#888888,bg=#121212"
set -g window-status-format         ' #I:#W#F '

# Window tabs — active (muted blue block, matches status-right style)
set -g window-status-current-style  "fg=#81b9d4,bg=#1e3040,bold"
set -g window-status-current-format '#{?pane_synchronized,#[bg=#5a4a00]#[fg=#f0c040], }#I:#W#F '

# Window bell / activity alerts
set -g window-status-bell-style     "fg=#d08770,bg=#121212,bold"
set -g window-status-activity-style "fg=#d8dee9,bg=#2e2215"


# ============================================================
# STATUS BAR CONTENT
# ============================================================
set -g status-interval      30
set -g status-right-length  300
set -g status-left-length   20
set -g status-left          ' #S '

set -g status-right "\
#[bg=#3b2e4a,fg=#c9a4e0]#(~/.local/bin/claude-status.sh)\
#[bg=#1e3040,fg=#81b9d4] 👤 #(whoami) \
#[bg=#2a2e1e,fg=#a3be8c] 🐧 #(uname -r) \
#[bg=#2e2215,fg=#d08770] 🌐 #(ip -4 a | awk '/inet / && !/127\\.0\\.0/ && !/172\\.1[6-9]\\./ && !/172\\.2[0-9]\\./ && !/172\\.3[01]\\./  {gsub(/\\/.*/, \"\", $2); print $2; exit}') \
#[bg=#1e2e1e,fg=#a3be8c] 💻 #H \
#[bg=#1e2535,fg=#5e81ac]#(~/.local/bin/battery-icon.sh)\
#[bg=#252525,fg=#d8dee9] 🕓 #(date '+%D %r') "

# ============================================================
# STATUS BAR TOGGLES
# ============================================================
bind-key C run 'v=$(tmux showenv -g TMUX_SHOW_CLAUDE | cut -d= -f2); [ "$v" = 1 ] && tmux setenv -g TMUX_SHOW_CLAUDE 0 || tmux setenv -g TMUX_SHOW_CLAUDE 1; rm -f ~/.claude/.status-cache; tmux refresh-client -S'
bind-key B run 'v=$(tmux showenv -g TMUX_SHOW_BATTERY | cut -d= -f2); [ "$v" = 1 ] && tmux setenv -g TMUX_SHOW_BATTERY 0 || tmux setenv -g TMUX_SHOW_BATTERY 1; tmux refresh-client -S'


# ============================================================
# GENERAL SETTINGS
# ============================================================
set -g  default-terminal   "tmux-256color"
set -g  prefix             M-a
set -g  base-index         1
set -g  pane-base-index    1
set -g  renumber-windows   on
set -g  aggressive-resize  on
set -s  escape-time        0
set -g  display-time       3000


# ============================================================
# KEY BINDINGS
# ============================================================
bind-key M-a last-window
bind-key a   send-prefix

# Toggle status bar
bind-key -n C-Space set-option status

# Clear scrollback
bind -n C-k clear-history

# Splits
unbind %
bind | split-window -h
bind - split-window -v

# New named window
bind c command-prompt -p "Name: " "new-window -n %1"

# Pane navigation (hjkl)
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# Pane resize (Alt + hjkl)
bind -n M-h resize-pane -L 1
bind -n M-l resize-pane -R 1
bind -n M-k resize-pane -U 1
bind -n M-j resize-pane -D 1

# Pane join/send
bind-key r command-prompt -p "join pane from:" "join-pane -s '%%'"
bind-key o command-prompt -p "send pane to:"   "join-pane -t '%%'"

# Sync panes toggle
bind y set synchronize-panes\; display 'synchronize-panes #{?synchronize-panes,on,off}'

# Monitor activity toggle
bind m set monitor-activity


# Paste from clipboard
bind M-v run "tmux set-buffer -- \"$(xclip -o -selection clipboard)\"; tmux paste-buffer"


# ============================================================
# PLUGINS (TPM)
# Keep at the very bottom
# ============================================================
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'
set -g @continuum-restore 'on'

if "test ! -d ~/.tmux/plugins/tpm" \
  "run 'git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm && ~/.tmux/plugins/tpm/bin/install_plugins'"

run '~/.tmux/plugins/tpm/tpm'