nvim/colors/sistine.lua

-- Sistine Theme for Neovim (Extended)
-- Inspired by the Sistine Chapel

local variant = vim.o.background -- "dark" or "light"
local colors = {}

if variant == "dark" then
  colors = {
    bg        = "#1f2428",
    fg        = "#dfd8c0",
    comment   = "#8a9286",
    blue      = "#6d8ec7",
    green     = "#a5c39f",
    yellow    = "#dfc17d",
    red       = "#dba59a",
    magenta   = "#dba59a", -- repurpose if needed
    cursorline= "#2a2e33",
    highlight = "#343a40", -- darker than bg2 for visual selects
  }
else
  colors = {
    bg         = "#f4f1ec", -- Fresco White
    fg         = "#80614d", -- Divine Umber
    red        = "#d18a74", -- Cherub Blush
    green      = "#7c8957", -- Olive Laurel
    yellow     = "#c9a04f", -- Renaissance Gold
    blue       = "#a8c3d1", -- Sky Blue
    magenta    = "#e5b1aa", -- Angel Pink
    cyan       = "#c1b6aa", -- Marble Grey
    comment    = "#a1978e", -- Softened Marble
    highlight  = "#c9a04f", -- Renaissance Gold
    cursorline = "#e8e2db",
  }
end

vim.cmd("hi clear")
vim.o.termguicolors = true
vim.g.colors_name = "sistine"

local set = vim.api.nvim_set_hl
local function hi(group, opts) set(0, group, opts) end

-- Core UI
hi("Normal",       { fg = colors.fg, bg = colors.bg })
hi("Comment",      { fg = colors.comment, italic = true })
hi("CursorLine",   { bg = colors.cursorline })
hi("Visual",       { bg = colors.highlight })
hi("LineNr",       { fg = colors.comment })
hi("CursorLineNr", { fg = colors.yellow, bold = true })
hi("StatusLine",   { fg = colors.fg, bg = colors.cursorline })
hi("VertSplit",    { fg = colors.comment })
hi("Title",        { fg = colors.magenta, bold = true })
hi("Search",       { bg = colors.yellow, fg = colors.bg })
hi("IncSearch",    { bg = colors.red, fg = colors.bg })

-- Diagnostics (LSP)
hi("DiagnosticError", { fg = colors.red })
hi("DiagnosticWarn",  { fg = colors.yellow })
hi("DiagnosticInfo",  { fg = colors.blue })
hi("DiagnosticHint",  { fg = colors.green })

hi("DiagnosticUnderlineError", { undercurl = true, sp = colors.red })
hi("DiagnosticUnderlineWarn",  { undercurl = true, sp = colors.yellow })
hi("DiagnosticUnderlineInfo",  { undercurl = true, sp = colors.blue })
hi("DiagnosticUnderlineHint",  { undercurl = true, sp = colors.green })

-- LSP Semantic Tokens
hi("@lsp.type.class",          { fg = colors.yellow })
hi("@lsp.type.function",       { fg = colors.blue })
hi("@lsp.type.variable",       { fg = colors.fg })
hi("@lsp.type.parameter",      { fg = colors.cyan })
hi("@lsp.type.property",       { fg = colors.green })
hi("@lsp.type.enum",           { fg = colors.magenta })

-- Treesitter
hi("@comment",        { fg = colors.comment, italic = true })
hi("@function",       { fg = colors.blue })
hi("@keyword",        { fg = colors.red, italic = true })
hi("@string",         { fg = colors.green })
hi("@variable",       { fg = colors.fg })
hi("@type",           { fg = colors.yellow })
hi("@property",       { fg = colors.green })
hi("@number",         { fg = colors.magenta })

-- Telescope
hi("TelescopeBorder",     { fg = colors.comment })
hi("TelescopePromptTitle",{ fg = colors.yellow, bold = true })
hi("TelescopeSelection",  { bg = colors.cursorline })
hi("TelescopeMatching",   { fg = colors.blue })

-- DAP (Debug)
hi("DebugBreakpoint",       { fg = colors.red })
hi("DebugBreakpointLine",   { bg = colors.cursorline })
hi("DebugPC",               { bg = colors.highlight })
hi("DebugCurrentLine",      { underline = true, sp = colors.yellow })

-- Pmenu (Completion)
hi("Pmenu",       { fg = colors.fg, bg = colors.cursorline })
hi("PmenuSel",    { fg = colors.bg, bg = colors.highlight })
hi("PmenuThumb",  { bg = colors.highlight })

-- Notify / Noice / Snacks
hi("NotifyINFOBorder",   { fg = colors.blue })
hi("NotifyWARNBorder",   { fg = colors.yellow })
hi("NotifyERRORBorder",  { fg = colors.red })
hi("NotifyDEBUGBorder",  { fg = colors.cyan })
hi("NotifyTRACEBorder",  { fg = colors.magenta })

hi("NoicePopup",         { bg = colors.cursorline })
hi("NoicePopupmenu",     { bg = colors.cursorline, fg = colors.fg })

-- Git Diff
hi("DiffAdd",    { fg = colors.green })
hi("DiffChange", { fg = colors.blue })
hi("DiffDelete", { fg = colors.red })

-- Terminal Colors
vim.g.terminal_color_0  = colors.bg
vim.g.terminal_color_1  = colors.red
vim.g.terminal_color_2  = colors.green
vim.g.terminal_color_3  = colors.yellow
vim.g.terminal_color_4  = colors.blue
vim.g.terminal_color_5  = colors.magenta
vim.g.terminal_color_6  = colors.cyan
vim.g.terminal_color_7  = colors.fg
vim.g.terminal_color_8  = colors.comment
vim.g.terminal_color_9  = colors.red
vim.g.terminal_color_10 = colors.green
vim.g.terminal_color_11 = colors.yellow
vim.g.terminal_color_12 = colors.blue
vim.g.terminal_color_13 = colors.magenta
vim.g.terminal_color_14 = colors.cyan
vim.g.terminal_color_15 = colors.fg

-- Bottom of sistine.lua (after terminal colors)
-- Apply Snacks highlights unconditionally
hi("SnacksNormal",      { fg = colors.fg, bg = colors.bg })
hi("SnacksNormalNC",    { fg = colors.comment, bg = colors.bg })
hi("SnacksWinBar",      { fg = colors.magenta, bg = colors.bg, bold = true })
hi("SnacksWinBarNC",    { fg = colors.comment, bg = colors.bg })
hi("SnacksCursorLine",  { bg = colors.highlight })
hi("SnacksCursor",      { bg = colors.highlight })
hi("SnacksPickerFile",       { fg = colors.green, bold = true  })
hi("SnacksPickerDir",        { fg = colors.comment })
hi("SnacksPickerPathHidden", { fg = colors.comment, italic = true })
hi("SnacksPickerPathIgnored",{ fg = colors.comment, italic = true })
hi("SnacksPickerPrefix",     { fg = colors.yellow })
hi("SnacksPickerNormal",   { fg = colors.fg, bg = colors.yellow })           -- Normal picker line
hi("SnacksPickerSelected", { fg = colors.bg, bg = colors.highlight })    -- Selected item (invert fg/bg)
hi("SnacksPickerCursor",   { fg = colors.yellow, bg = colors.cursorline })
hi("NormalFloat",   { fg = colors.fg, bg = colors.bg })