diff --git a/init.lua b/init.lua
new file mode 100644
index 0000000..eb62583
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,36 @@
+-- Désactive l'avertissement de dépréciation de nvim-lspconfig
+vim.g.lspconfig_suppress_deprecation_warning = true
+-- Au lieu de : set number
+vim.opt.number = true
+vim.opt.relativenumber = true -- Très utile pour les sauts de ligne en tant que dev
+
+-- Indentation (Python/C friendly)
+vim.opt.tabstop = 4
+vim.opt.shiftwidth = 4
+vim.opt.expandtab = true
+
+-- Recherche
+vim.opt.ignorecase = true
+vim.opt.smartcase = true
+
+-- Clipboard (pour copier vers l'OS directement)
+vim.opt.clipboard = "unnamedplus"
+
+-- 1. Définir la touche Leader (Espace est le standard moderne)
+vim.g.mapleader = " "
+
+-- 2. Installer Lazy.nvim si absent
+local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
+if not vim.loop.fs_stat(lazypath) then
+  vim.fn.system({
+    "git", "clone", "--filter=blob:none",
+    "https://github.com/folke/lazy.nvim.git", "--branch=stable", lazypath,
+  })
+end
+vim.opt.rtp:prepend(lazypath)
+
+-- 3. Charger tes options et tes plugins
+require("core.options")
+require("core.keymaps")
+
+require("lazy").setup("plugins") -- Il va chercher les fichiers dans lua/plugins/
diff --git a/lazy-lock.json b/lazy-lock.json
new file mode 100644
index 0000000..785b792
--- /dev/null
+++ b/lazy-lock.json
@@ -0,0 +1,12 @@
+{
+  "catppuccin": { "branch": "main", "commit": "12c004cde3f36cb1d57242f1e6aac46b09a0e5b4" },
+  "lazy.nvim": { "branch": "main", "commit": "306a05526ada86a7b30af95c5cc81ffba93fef97" },
+  "lualine.nvim": { "branch": "master", "commit": "47f91c416daef12db467145e16bed5bbfe00add8" },
+  "mason.nvim": { "branch": "main", "commit": "44d1e90e1f66e077268191e3ee9d2ac97cc18e65" },
+  "nvim-lspconfig": { "branch": "master", "commit": "2163c54bb6cfec53e3e555665ada945b8c8331b9" },
+  "nvim-tree.lua": { "branch": "master", "commit": "4b30847c91d498446cb8440c03031359b045e050" },
+  "nvim-treesitter": { "branch": "main", "commit": "5cb05e1b0fa3c469958a2b26f36b3fe930af221c" },
+  "nvim-web-devicons": { "branch": "master", "commit": "737cf6c657898d0c697311d79d361288a1343d50" },
+  "plenary.nvim": { "branch": "master", "commit": "b9fd5226c2f76c951fc8ed5923d85e4de065e509" },
+  "telescope.nvim": { "branch": "master", "commit": "d90956833d7c27e73c621a61f20b29fdb7122709" }
+}
diff --git a/lua/core/keymaps.lua b/lua/core/keymaps.lua
new file mode 100644
index 0000000..7dc4515
--- /dev/null
+++ b/lua/core/keymaps.lua
@@ -0,0 +1,24 @@
+local keymap = vim.keymap.set
+
+-- Mieux gérer les splits (Fenêtres)
+keymap("n", "<leader>v", ":vsplit<CR>", { desc = "Split vertical" })
+keymap("n", "<leader>h", ":split<CR>", { desc = "Split horizontal" })
+
+-- Navigation entre les splits avec Ctrl + direction (comme dans tmux)
+keymap("n", "<C-h>", "<C-w>h")
+keymap("n", "<C-j>", "<C-w>j")
+keymap("n", "<C-k>", "<C-w>k")
+keymap("n", "<C-l>", "<C-w>l")
+
+-- Gestion des Buffers (les fichiers ouverts)
+keymap("n", "<leader>bn", ":bnext<CR>", { desc = "Buffer suivant" })
+keymap("n", "<leader>bp", ":bprev<CR>", { desc = "Buffer précédent" })
+keymap("n", "<leader>bd", ":bdelete<CR>", { desc = "Fermer le buffer" })
+
+-- Garder le curseur au milieu lors des sauts de page (confort visuel)
+keymap("n", "<C-d>", "<C-d>zz")
+keymap("n", "<C-u>", "<C-u>zz")
+
+-- Déplacer des blocs de texte en mode Visuel (Alt + j/k)
+keymap("v", "J", ":m '>+1<CR>gv=gv")
+keymap("v", "K", ":m '<-2<CR>gv=gv")
diff --git a/lua/core/options.lua b/lua/core/options.lua
new file mode 100644
index 0000000..473a0f4
diff --git a/lua/plugins/lsp.lua b/lua/plugins/lsp.lua
new file mode 100644
index 0000000..e820c92
--- /dev/null
+++ b/lua/plugins/lsp.lua
@@ -0,0 +1,27 @@
+return {
+  {
+    "williamboman/mason.nvim",
+    config = function()
+      require("mason").setup()
+    end
+  },
+  {
+    "neovim/nvim-lspconfig",
+    config = function()
+      -- AU LIEU DE : local lspconfig = require('lspconfig')
+      -- ON UTILISE DIRECTEMENT L'API 0.11 :
+      
+      -- Configuration pour Python
+      vim.lsp.config('pyright', {})
+      
+      -- Configuration pour C/C++
+      vim.lsp.config('clangd', {})
+      
+      -- Configuration pour Bash
+      vim.lsp.config('bashls', {})
+
+      -- Note : Si tu veux ajouter des options spécifiques plus tard, 
+      -- c'est dans le deuxième argument {} qu'on les met.
+    end
+  }
+}
diff --git a/lua/plugins/telescope.lua b/lua/plugins/telescope.lua
new file mode 100644
index 0000000..3cfc237
--- /dev/null
+++ b/lua/plugins/telescope.lua
@@ -0,0 +1,9 @@
+return {
+  'nvim-telescope/telescope.nvim', tag = '0.1.5',
+  dependencies = { 'nvim-lua/plenary.nvim' },
+  config = function()
+    local builtin = require('telescope.builtin')
+    vim.keymap.set('n', '<leader>ff', builtin.find_files, {}) -- Recherche fichier
+    vim.keymap.set('n', '<leader>fg', builtin.live_grep, {})  -- Recherche texte (nécessite ripgrep)
+  end
+}
diff --git a/lua/plugins/tree.lua b/lua/plugins/tree.lua
new file mode 100644
index 0000000..d7edff4
--- /dev/null
+++ b/lua/plugins/tree.lua
@@ -0,0 +1,8 @@
+return {
+  "nvim-tree/nvim-tree.lua",
+  dependencies = { "nvim-tree/nvim-web-devicons" },
+  config = function()
+    require("nvim-tree").setup()
+    vim.keymap.set('n', '<leader>e', ':NvimTreeToggle<CR>') -- Espace + e pour ouvrir/fermer
+  end
+}
diff --git a/lua/plugins/treesitter.lua b/lua/plugins/treesitter.lua
new file mode 100644
index 0000000..bb908a0
--- /dev/null
+++ b/lua/plugins/treesitter.lua
@@ -0,0 +1,17 @@
+return {
+  {
+    "nvim-treesitter/nvim-treesitter",
+    build = ":TSUpdate",
+    config = function()
+      -- On utilise pcall pour éviter de crash si le plugin n'est pas encore là
+      local status, ts = pcall(require, "nvim-treesitter.configs")
+      if not status then return end
+
+      ts.setup({
+        ensure_installed = { "lua", "vim", "vimdoc", "bash", "python", "c" },
+        highlight = { enable = true },
+        indent = { enable = true },
+      })
+    end
+  }
+}
diff --git a/lua/plugins/ui.lua b/lua/plugins/ui.lua
new file mode 100644
index 0000000..459b7c7
--- /dev/null
+++ b/lua/plugins/ui.lua
@@ -0,0 +1,9 @@
+return {
+  -- Thème
+  { "catppuccin/nvim", name = "catppuccin", priority = 1000, 
+    config = function() vim.cmd.colorscheme "catppuccin" end },
+  
+  -- Barre de statut
+  { "nvim-lualine/lualine.nvim", dependencies = { "nvim-tree/nvim-web-devicons" },
+    config = function() require('lualine').setup() end },
+}