function hl(name, opts)
    opts.force = false
    vim.api.nvim_set_hl(0, name, opts)
end

local dark = true
-- Color Palettes (nasr 4coder theme: warm amber/rust/sepia on dark)
local palettes = {
    dark = {
        bg         = "NONE", bgAlt      = "#1A1208", fg         = "#C4A882",
        fgDim      = "#6B5A45", cursor     = "#F0A030", cursorAlt  = "#C04018",
        cursorLine = "#1F1610", lineNr     = "#5A4A38", visual     = "#3A0A00",
        search     = "#3D2B1A", border     = "#241A10", comment    = "#6B5A45",
        commentPop = "#B87040", keyword    = "#D48B30", string     = "#B86030",
        constant   = "#9B7040", type       = "#B87040", accent     = "#D48B30",
        preproc    = "#C05020", bar        = "#8B7355", pop1       = "#D4A030",
        pop2       = "#DC4A20",
    },
    light = {
        bg         = "#F5F1E8", bgAlt      = "#EBE4D9", fg         = "#3E3530",
        fgDim      = "#7A7066", cursor     = "#1A1A1A", cursorAlt  = "#D85D00",
        cursorLine = "#E8DDD0", lineNr     = "#9E9E9E", visual     = "#D95E15",
        search     = "#F0C000", border     = "#C8C8C8", comment    = "#8A8A7E",
        commentPop = "#0A9FB5", keyword    = "#C41E3A", string     = "#2F7A2F",
        constant   = "#1B8A8A", type       = "#8B7355", accent     = "#D4A000",
        preproc    = "#D97738", bar        = "#5A5A5A", pop1       = "#3F8D3F",
        pop2       = "#C9006B",
    }
}

-- SELECT ACTIVE PALETTE
local colors = dark and palettes.dark or palettes.light

if not vim.g.neovide then
    hl("Normal", { fg = colors.fg, bg = colors.bg })
    hl("NormalFloat",  { fg = colors.fg, bg = colors.bgAlt })
else
    hl("Normal", { fg = colors.fg, bg = "NONE" })
    hl("NormalFloat",  { fg = colors.fg, bg = "NONE" })
end

-- APPLY_HL_GROUP HELPER (was missing)
local function apply_hl_group(name, opts)
    opts.force = false
    vim.api.nvim_set_hl(0, name, opts)
end

apply_hl_group("Normal",      { fg = colors.fg,    bg = colors.bg,    blend = 10 })
apply_hl_group("NormalFloat", { fg = colors.fg,    bg = colors.bgAlt, blend = 10 })
apply_hl_group("NormalNC",    { fg = colors.fgDim, bg = colors.bg,    blend = 10 })
apply_hl_group("WinBar",      { fg = colors.bar,   bg = "NONE",       blend = 10 })
apply_hl_group("WinBarNC",    { fg = colors.fgDim, bg = "NONE",       blend = 10 })

-- Status Lines
apply_hl_group("statusline",   { fg = colors.fg,    bg = "NONE", blend = 10 })
apply_hl_group("statuslinenc", { fg = colors.fgDim, bg = "NONE", blend = 10 })

-- Messages (Neovide-specific)
if vim.g.neovide then
    apply_hl_group("MsgArea",      { fg = colors.keyword, bg = colors.bg, blend = 10 })
    apply_hl_group("MsgSeparator", { fg = colors.border,  bg = colors.bg, blend = 10 })
    apply_hl_group("MoreMsg",      { fg = colors.accent,                  blend = 10 })
    apply_hl_group("WarningMsg",   { fg = colors.pop2,                    blend = 10 })
else
    apply_hl_group("MsgArea",      { fg = "NONE", bg = "NONE" })
    apply_hl_group("MsgSeparator", { fg = "NONE", bg = "NONE" })
    apply_hl_group("MoreMsg",      { fg = "NONE" })
    apply_hl_group("WarningMsg",   { fg = "NONE" })
end

apply_hl_group("WinSeparator",   { fg = colors.fg,    bg = "NONE", blend = 10 })
apply_hl_group("WinSeparatorNC", { fg = colors.fgDim, bg = "NONE", blend = 10 })
apply_hl_group("VertSplit",      { fg = colors.border, bg = "NONE", blend = 10 })
apply_hl_group("VertSplitNC",    { fg = colors.fgDim,  bg = "NONE", blend = 10 })

-- Float Border
apply_hl_group("FloatBorder",   { fg = colors.border, bg = colors.bgAlt, blend = 10 })
apply_hl_group("FloatBorderNC", { fg = colors.fgDim,  bg = colors.bgAlt, blend = 10 })

apply_hl_group("Cursor",         { fg = colors.bg, bg = colors.cursor,    blend = 10 })
apply_hl_group("TermCursor",     { fg = colors.bg, bg = colors.cursor,    blend = 10 })
apply_hl_group("CursorLine",     { bg = colors.cursorLine,                blend = 10 })
apply_hl_group("CursorLineNC",   { bg = colors.bgAlt,                     blend = 10 })
apply_hl_group("CursorLineNr",   { fg = colors.accent, bg = colors.cursorLine, blend = 10 })
apply_hl_group("CursorLineNrNC", { fg = colors.fgDim,  bg = colors.bgAlt, blend = 10 })
apply_hl_group("LineNr",         { fg = colors.lineNr, bg = "NONE",       blend = 10 })
apply_hl_group("LineNrNC",       { fg = colors.fgDim,  bg = "NONE",       blend = 10 })

apply_hl_group("Visual",     { fg = colors.bg,    bg = colors.visual,  blend = 10 })
apply_hl_group("VisualNC",   { fg = colors.fgDim, bg = colors.bgAlt,   blend = 10 })
apply_hl_group("Search",     { bg = colors.search,                      blend = 10 })
apply_hl_group("IncSearch",  { fg = colors.bg, bg = colors.visual,      blend = 10 })
apply_hl_group("MatchParen", { fg = colors.bg, bg = colors.accent,      blend = 10 })

apply_hl_group("Pmenu",      { fg = colors.fg,    bg = colors.bgAlt,  blend = 10 })
apply_hl_group("PmenuNC",    { fg = colors.fgDim, bg = colors.bgAlt,  blend = 10 })
apply_hl_group("PmenuSel",   { fg = colors.bg,    bg = colors.accent, blend = 10 })
apply_hl_group("PmenuSelNC", { fg = colors.bgAlt, bg = colors.fgDim,  blend = 10 })
apply_hl_group("PmenuSbar",  { bg = colors.bgAlt,                      blend = 10 })
apply_hl_group("PmenuThumb", { bg = colors.bar,                        blend = 10 })

apply_hl_group("Comment",   { fg = colors.comment,  blend = 10 })
apply_hl_group("Constant",  { fg = colors.constant, blend = 10 })
apply_hl_group("String",    { fg = colors.string,   blend = 10 })
apply_hl_group("Character", { fg = colors.string,   blend = 10 })
apply_hl_group("Number",    { fg = colors.constant, blend = 10 })
apply_hl_group("Boolean",   { fg = colors.constant, blend = 10 })
apply_hl_group("Float",     { fg = colors.constant, blend = 10 })
apply_hl_group("Identifier",{ fg = colors.fg,       blend = 10 })
apply_hl_group("Function",  { fg = colors.fg,       blend = 10 })
apply_hl_group("Statement", { fg = colors.keyword,  blend = 10 })
apply_hl_group("Conditional",{ fg = colors.keyword, blend = 10 })
apply_hl_group("Repeat",    { fg = colors.keyword,  blend = 10 })
apply_hl_group("Label",     { fg = colors.keyword,  blend = 10 })
apply_hl_group("Operator",  { fg = colors.fg,       blend = 10 })
apply_hl_group("Keyword",   { fg = colors.keyword,  blend = 10 })
apply_hl_group("Exception", { fg = colors.keyword,  blend = 10 })
apply_hl_group("PreProc",   { fg = colors.preproc,  blend = 10 })
apply_hl_group("Include",   { fg = colors.string,   blend = 10 })
apply_hl_group("Type",      { fg = colors.type,     blend = 10 })
apply_hl_group("Special",   { fg = colors.pop2,     blend = 10 })
apply_hl_group("SpecialChar",{ fg = colors.pop2,    blend = 10 })
apply_hl_group("Delimiter", { fg = colors.fg,       blend = 10 })
apply_hl_group("Underlined",{ underline = false,    blend = 10 })
apply_hl_group("Error",     { fg = colors.pop2, bg = colors.bg,       blend = 10 })
apply_hl_group("Todo",      { fg = colors.commentPop, bg = colors.bg, blend = 10 })
apply_hl_group("Note",      { fg = colors.commentPop, bg = colors.bg, blend = 10 })

apply_hl_group("DiagnosticError", { fg = colors.pop2,       blend = 10 })
apply_hl_group("DiagnosticWarn",  { fg = colors.keyword,    blend = 10 })
apply_hl_group("DiagnosticInfo",  { fg = colors.commentPop, blend = 10 })
apply_hl_group("DiagnosticHint",  { fg = colors.comment,    blend = 10 })

-- Basic Tree-sitter links
apply_hl_group("@comment",              { link = "Comment" })
apply_hl_group("@constant",             { link = "Constant" })
apply_hl_group("@string",               { link = "String" })
apply_hl_group("@number",               { link = "Number" })
apply_hl_group("@boolean",              { link = "Boolean" })
apply_hl_group("@function",             { link = "Function" })
apply_hl_group("@function.builtin",     { fg = colors.pop1 })
apply_hl_group("@keyword",              { link = "Keyword" })
apply_hl_group("@keyword.function",     { link = "Keyword" })
apply_hl_group("@operator",             { link = "Operator" })
apply_hl_group("@type",                 { link = "Type" })
apply_hl_group("@type.builtin",         { link = "Type" })
apply_hl_group("@variable",             { fg = colors.fg })
apply_hl_group("@variable.builtin",     { fg = colors.keyword })
apply_hl_group("@punctuation.delimiter",{ fg = colors.fg })
apply_hl_group("@punctuation.bracket",  { fg = colors.fg })
apply_hl_group("@property",             { fg = colors.fg })
apply_hl_group("@field",                { fg = colors.fg })
apply_hl_group("@tag",                  { fg = colors.keyword })
apply_hl_group("@tag.attribute",        { fg = colors.fg })
apply_hl_group("@tag.delimiter",        { fg = colors.fg })

-- Type system highlights
apply_hl_group("@type.definition", { fg = colors.type })
apply_hl_group("@type.qualifier",  { fg = colors.keyword })
apply_hl_group("@type.int",        { fg = colors.constant })
apply_hl_group("@type.float",      { fg = colors.constant })
apply_hl_group("@type.bool",       { fg = colors.constant })
apply_hl_group("@type.char",       { fg = colors.string })
apply_hl_group("@type.void",       { fg = colors.keyword })
apply_hl_group("@type.ptr",        { fg = colors.preproc })

-- Declarations
apply_hl_group("@declaration.type",     { fg = colors.type })
apply_hl_group("@declaration.var",      { fg = colors.fg })
apply_hl_group("@declaration.function", { fg = colors.fg })
apply_hl_group("@declaration.const",    { fg = colors.constant })

-- Modifiers & Storage
apply_hl_group("@modifier",             { fg = colors.keyword })
apply_hl_group("@modifier.const",       { fg = colors.keyword })
apply_hl_group("@modifier.static",      { fg = colors.keyword })
apply_hl_group("@modifier.extern",      { fg = colors.keyword })
apply_hl_group("@modifier.volatile",    { fg = colors.keyword })
apply_hl_group("@modifier.restrict",    { fg = colors.keyword })
apply_hl_group("@storageclass",         { fg = colors.keyword })
apply_hl_group("@storageclass.typedef", { fg = colors.type })
apply_hl_group("@storageclass.struct",  { fg = colors.type })
apply_hl_group("@storageclass.union",   { fg = colors.type })
apply_hl_group("@storageclass.enum",    { fg = colors.type })

-- Field & Property
apply_hl_group("@field.type",    { fg = colors.type })
apply_hl_group("@property.type", { fg = colors.type })

-- Function highlights
apply_hl_group("@function.call",        { fg = colors.fg })
apply_hl_group("@function.declaration", { fg = colors.fg })
apply_hl_group("@function.type",        { fg = colors.type })

-- Parameters
apply_hl_group("@parameter",          { fg = colors.fg })
apply_hl_group("@parameter.type",     { fg = colors.type })
apply_hl_group("@variable.parameter", { fg = colors.fg })

-- Type casting
apply_hl_group("@type.cast", { fg = colors.type })

-- Constants & Enums
apply_hl_group("@constant.builtin", { fg = colors.constant })
apply_hl_group("@constant.macro",   { fg = colors.preproc })
apply_hl_group("@constant.type",    { fg = colors.type })

-- Aliases
apply_hl_group("@alias",      { fg = colors.type })
apply_hl_group("@type.alias", { fg = colors.type })

-- LSP highlights (intentionally cleared — let treesitter own these)
apply_hl_group("@lsp.type.variable",    {})
apply_hl_group("@lsp.type.function",    {})
apply_hl_group("@lsp.type.keyword",     {})
apply_hl_group("@lsp.type.comment",     {})
apply_hl_group("@lsp.type.string",      {})
apply_hl_group("@lsp.type.number",      {})
apply_hl_group("@lsp.type.operator",    {})
apply_hl_group("@lsp.type.punctuation", {})

apply_hl_group("Normal", { fg = colors.fg, bg = colors.bg, blend = 10 })