-- Delta Admin Script with Rank System + Ban/Kick/Message
-- Optimized for Delta Executor

local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

local LocalPlayer = Players.LocalPlayer
local Prefix = ":" 

-- Rank System
local Ranks = {
    ["Owner"] = 5,
    ["Admin"] = 4,
    ["Moderator"] = 3,
    ["VIP"] = 2,
    ["Member"] = 1,
    ["None"] = 0
}

local PlayerRanks = {}
local BannedPlayers = {}  -- For simple ban system

-- Give yourself Owner rank
PlayerRanks[LocalPlayer.Name] = 5

local function getRank(player)
    return PlayerRanks[player.Name] or 0
end

local function hasPermission(player, requiredRank)
    return getRank(player) >= requiredRank
end

local function notify(title, msg)
    game.StarterGui:SetCore("SendNotification", {
        Title = title or "Delta Admin",
        Text = msg,
        Duration = 6
    })
end

local function sendGlobalMessage(text)
    if ReplicatedStorage:FindFirstChild("DefaultChatSystemChatEvents") then
        ReplicatedStorage.DefaultChatSystemChatEvents.SayMessageRequest:FireServer(text, "All")
    end
end

-- Command Handler
local function onChat(message, player)
    if not message:find("^" .. Prefix) then return end
    
    local args = message:split(" ")
    local cmd = args[1]:lower():sub(#Prefix + 1)
    local fullMessage = message:sub(#args[1] + 2)

    -- ====================== RANK ======================
    if cmd