tmux.conf

# ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
# ┃             ⚡ tmux.conf — SilkCircuit Neon ⚡                              ┃
# ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

# ─────────────────────────────────────────────────────────────────────────────
# Terminal & True Color
# ─────────────────────────────────────────────────────────────────────────────

set -g default-terminal "tmux-256color"

# True color support (tmux 3.2+ terminal-features method)
set -as terminal-features ",xterm-256color:RGB"
set -as terminal-features ",xterm-ghostty:RGB"

# Undercurl support (neovim diagnostics, spelling, etc.)
set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm'
set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'

# ─────────────────────────────────────────────────────────────────────────────
# General
# ─────────────────────────────────────────────────────────────────────────────

set -g mouse on
set -g base-index 1
setw -g pane-base-index 1
set -g renumber-windows on
set -g history-limit 50000

# Zero escape delay (critical for vim/neovim)
set -sg escape-time 0

# Vim autoread, tmux-yank, and other integrations need this
set -g focus-events on

# OSC 52 clipboard (system clipboard without external tools)
set -g set-clipboard on

# Allow passthrough sequences (sixel/kitty image protocols)
set -g allow-passthrough on

# Extended key reporting (tmux 3.5+ — proper modifier keys)
set -g extended-keys on

# Longer display time for messages and pane indicators
set -g display-time 3000
set -g display-panes-time 2000

# Auto-rename windows based on running command / current path
setw -g automatic-rename on
set -g automatic-rename-format '#{?#{==:#{pane_current_command},zsh},#{b:pane_current_path},#{pane_current_command}}'

# Activity monitoring (highlight without message spam)
setw -g monitor-activity on
set -g visual-activity off

# ─────────────────────────────────────────────────────────────────────────────
# Vi Mode
# ─────────────────────────────────────────────────────────────────────────────

setw -g mode-keys vi

# Vi-style copy bindings
bind-key -T copy-mode-vi v send-keys -X begin-selection
bind-key -T copy-mode-vi C-v send-keys -X rectangle-toggle
bind-key -T copy-mode-vi y send-keys -X copy-selection-and-cancel

# Don't exit copy mode on mouse drag end (keeps selection visible)
unbind -T copy-mode-vi MouseDragEnd1Pane

# Incremental search in copy mode
bind-key -T copy-mode-vi / command-prompt -i -p "(search down)" "send -X search-forward-incremental \"%%%\""
bind-key -T copy-mode-vi ? command-prompt -i -p "(search up)" "send -X search-backward-incremental \"%%%\""

# ─────────────────────────────────────────────────────────────────────────────
# Splits & Windows (preserve current path)
# ─────────────────────────────────────────────────────────────────────────────

bind | split-window -h -c "#{pane_current_path}"
bind - split-window -v -c "#{pane_current_path}"
bind _ split-window -fv -c "#{pane_current_path}"   # full-width horizontal
bind \\ split-window -fh -c "#{pane_current_path}"  # full-width vertical
unbind '"'
unbind %

# New window inherits current path
bind c new-window -c "#{pane_current_path}"

# ─────────────────────────────────────────────────────────────────────────────
# Pane Navigation & Resizing
# ─────────────────────────────────────────────────────────────────────────────

# Vim-style pane selection (prefix + h/j/k/l)
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# Vim-style pane resizing (repeatable with -r)
bind -r H resize-pane -L 5
bind -r J resize-pane -D 5
bind -r K resize-pane -U 5
bind -r L resize-pane -R 5

# Zoom toggle (built-in prefix + z, but also add a mnemonic)
bind m resize-pane -Z

# ─────────────────────────────────────────────────────────────────────────────
# Window Navigation
# ─────────────────────────────────────────────────────────────────────────────

# Direct window selection (Alt + number, no prefix needed)
bind -n M-1 select-window -t 1
bind -n M-2 select-window -t 2
bind -n M-3 select-window -t 3
bind -n M-4 select-window -t 4
bind -n M-5 select-window -t 5
bind -n M-6 select-window -t 6
bind -n M-7 select-window -t 7
bind -n M-8 select-window -t 8
bind -n M-9 select-window -t 9

# Cycle windows (Shift + arrow, no prefix)
bind -n S-Left previous-window
bind -n S-Right next-window

# Swap window position
bind -r < swap-window -d -t -1
bind -r > swap-window -d -t +1

# Quick toggles
bind Tab last-window

# ─────────────────────────────────────────────────────────────────────────────
# Session Management
# ─────────────────────────────────────────────────────────────────────────────

# Toggle last session
bind BTab switch-client -l

# Create new session
bind N command-prompt -p "New session:" "new-session -s '%%'"

# FZF session switcher (prefix + f)
bind f display-popup -E -w 60% -h 60% "\
  tmux list-sessions -F '#{session_name}' | \
  fzf --reverse --header='⚡ Switch Session' \
      --preview='tmux capture-pane -ep -t {}' \
      --preview-window=right:60% \
      --color=bg+:#3c3836,bg:#0d0d1a,spinner:#e135ff,hl:#80ffea \
      --color=fg:#e8e0f0,header:#80ffea,info:#f1fa8c,pointer:#e135ff \
      --color=marker:#50fa7b,fg+:#e8e0f0,prompt:#e135ff,hl+:#ff6ac1 \
      --color=border:#625c7a | \
  xargs tmux switch-client -t"

# ─────────────────────────────────────────────────────────────────────────────
# Popups & Utilities
# ─────────────────────────────────────────────────────────────────────────────

# Popup terminal (prefix + `)
bind ` display-popup -E -w 80% -h 80% -d "#{pane_current_path}"

# Popup process viewer
bind M display-popup -E -w 80% -h 80% "htop"

# Reload config
bind r source-file ~/.tmux.conf \; display-message "⚡ Config reloaded!"

# Break pane out to its own window
bind B break-pane

# Grab a pane from another window into this one
bind G command-prompt -p "Grab pane from:" "join-pane -s '%%'"

# Toggle synchronized input across all panes
bind S setw synchronize-panes \; display-message "#{?pane_synchronized,Sync ON,Sync OFF}"

# ─────────────────────────────────────────────────────────────────────────────
# SilkCircuit Neon — Status Bar
# ─────────────────────────────────────────────────────────────────────────────
#
# Canonical palette:
#   #e135ff  Electric Purple   accents, markers, active elements
#   #80ffea  Neon Cyan         paths, interactions, secondary info
#   #ff6ac1  Coral             current/hot items, highlights
#   #f1fa8c  Electric Yellow   timestamps, warnings, attention
#   #50fa7b  Success Green     confirmations, success states
#   #ff6363  Error Red         alerts, failures
#   #0d0d1a  Deep Void         terminal background
#   #16162a  Dark Surface      status bar background
#   #e8e0f0  Soft Lavender     primary foreground
#   #5a5478  Muted             dim/inactive text
#   #625c7a  Dim Purple        borders, separators

set -g status on
set -g status-position top
set -g status-interval 5
set -g status-justify left
set -g status-style "bg=#16162a,fg=#e8e0f0"
set -g status-left-length 40
set -g status-right-length 80

# Left: session name (electric purple powerline segment)
set -g status-left "#[fg=#0d0d1a,bg=#e135ff,bold] ⚡#S #[fg=#e135ff,bg=#16162a,nobold] "

# Window list
set -g window-status-format "#[fg=#5a5478] #I:#W "
set -g window-status-current-format "#[fg=#ff6ac1,bg=#16162a]#[fg=#0d0d1a,bg=#ff6ac1,bold] #I:#W#{?window_zoomed_flag,+,} #[fg=#ff6ac1,bg=#16162a]"
set -g window-status-separator ""
set -g window-status-activity-style "fg=#f1fa8c"
set -g window-status-bell-style "fg=#ff6363,bold"

# Right: hostname, time, date
set -g status-right "#[fg=#80ffea] #h #[fg=#625c7a]│#[fg=#f1fa8c]  %H:%M #[fg=#625c7a]│#[fg=#5a5478]  %m-%d "

# ─────────────────────────────────────────────────────────────────────────────
# SilkCircuit Neon — Panes, Messages, Copy Mode
# ─────────────────────────────────────────────────────────────────────────────

# Pane borders
set -g pane-border-style "fg=#625c7a"
set -g pane-active-border-style "fg=#e135ff"
set -g pane-border-lines single
set -g pane-border-indicators colour

# Messages
set -g message-style "bg=#1e1e35,fg=#ff6ac1,bold"
set -g message-command-style "bg=#1e1e35,fg=#80ffea"

# Copy mode highlight
setw -g mode-style "bg=#e135ff,fg=#0d0d1a"

# Clock
setw -g clock-mode-colour "#e135ff"
setw -g clock-mode-style 24

# Display-panes overlay
set -g display-panes-active-colour "#e135ff"
set -g display-panes-colour "#625c7a"

# ─────────────────────────────────────────────────────────────────────────────
# Plugins
# ─────────────────────────────────────────────────────────────────────────────

# Plugin Manager
set -g @plugin 'tmux-plugins/tpm'

# Sensible defaults everyone agrees on
set -g @plugin 'tmux-plugins/tmux-sensible'

# ─── Session Persistence ───
# Survive tmux server restarts and system reboots
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-continuum'
set -g @continuum-restore 'on'
set -g @resurrect-capture-pane-contents 'on'
set -g @resurrect-strategy-nvim 'no'   # Let Neovim handle its own sessions

# ─── System Clipboard ───
# Handles pbcopy (macOS), xclip/wl-copy (Linux), clip.exe (WSL)
set -g @plugin 'tmux-plugins/tmux-yank'

# ─── Seamless Vim/Tmux Navigation ───
# Ctrl-h/j/k/l moves between vim splits AND tmux panes
# NOTE: Install the matching neovim plugin: christoomey/vim-tmux-navigator
# (prefix + C-l sends C-l through for shell clear)
set -g @plugin 'christoomey/vim-tmux-navigator'

# ─── Fuzzy Finder Integration ───
# prefix + F → fuzzy find sessions, windows, panes, commands
set -g @plugin 'sainnhe/tmux-fzf'
TMUX_FZF_LAUNCH_KEY="F"
TMUX_FZF_OPTIONS="\
  --color=bg+:#3c3836,bg:#0d0d1a,spinner:#e135ff,hl:#80ffea \
  --color=fg:#e8e0f0,header:#80ffea,info:#f1fa8c,pointer:#e135ff \
  --color=marker:#50fa7b,fg+:#e8e0f0,prompt:#e135ff,hl+:#ff6ac1 \
  --color=border:#625c7a"

# ─── Quick Copy Hints ───
# prefix + Space → Vimium-style hints for copying visible text
set -g @plugin 'fcsonline/tmux-thumbs'
set -g @thumbs-fg-color "#e135ff"
set -g @thumbs-bg-color "#16162a"
set -g @thumbs-hint-fg-color "#0d0d1a"
set -g @thumbs-hint-bg-color "#80ffea"
set -g @thumbs-select-fg-color "#0d0d1a"
set -g @thumbs-select-bg-color "#50fa7b"

# ─── Open URLs & Files from Copy Mode ───
# In copy mode: o → open selection, Ctrl-o → open in $EDITOR
set -g @plugin 'tmux-plugins/tmux-open'

# ─────────────────────────────────────────────────────────────────────────────
# Initialize TPM (MUST be last line)
# ─────────────────────────────────────────────────────────────────────────────
run '~/.tmux/plugins/tpm/tpm'