diff --git a/server.js b/server.js
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+++ b/server.js
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+'use strict';
+
+/**
+ * server.js
+ * Envanter/Stok Yönetim Sistemi — uygulama giriş noktası.
+ * Express + EJS server-render + REST API hibriti.
+ */
+
+const path = require('path');
+const express = require('express');
+const expressLayouts = require('express-ejs-layouts');
+const fs = require('fs');
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+// --- Middleware ---
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+
+// --- View enjini (EJS) ---
+app.set('view engine', 'ejs');
+app.set('views', path.join(__dirname, 'views'));
+app.use(expressLayouts);
+app.set('layout', 'layout');
+
+// --- Statik dosyalar ---
+// index:false çünkü '/' route'u dashboard (views/index.ejs) olmalı.
+// public/index.html API belgeleri olarak /index.html adresinde kalır.
+app.use(express.static(path.join(__dirname, 'public'), { index: false }));
+
+// --- Routes bağlama ---
+app.use('/api/products', require('./routes/products'));
+app.use('/api/stock', require('./routes/stock'));
+app.use('/api/categories', require('./routes/categories'));
+app.use('/api/reports', require('./routes/reports'));
+
+// --- HTML sayfa rotaları ---
+const productModel = require('./models/productModel');
+const stockModel = require('./models/stockModel');
+const categoryModel = require('./models/categoryModel');
+const reportService = require('./services/reportService');
+const lowStockService = require('./services/lowStockService');
+
+/** Dashboard: genel istatistik + son hareketler. */
+app.get('/', (req, res) => {
+  const products = productModel.readAll();
+  const categories = categoryModel.readAll();
+  const totalStockValue = products.reduce(
+    (s, p) => s + Number(p.stock) * Number(p.unitPrice),
+    0
+  );
+  const totalStockCount = products.reduce((s, p) => s + Number(p.stock), 0);
+  const lowStockCount = lowStockService.countLowStock();
+  const lowStockProducts = lowStockService.findLowStock().map((x) => x.product).slice(0, 5);
+
+  const recentMovements = stockModel.getAll().slice(0, 6).map((m) => {
+    const prod = products.find((p) => p.id === Number(m.productId));
+    return { ...m, productName: prod ? prod.name : 'Silinmiş Ürün' };
+  });
+
+  const categorySummary = reportService.allCategorySummary();
+
+  res.render('index', {
+    title: 'Panel',
+    totalProducts: products.length,
+    totalStockValue,
+    totalStockCount,
+    lowStockCount,
+    lowStockProducts,
+    recentMovements,
+    categorySummary,
+    bodyClass: 'dashboard'
+  });
+});
+
+/** Ürünler sayfası (önceden tanımlı route köküne yönlendirir). */
+app.get('/products', (req, res) => res.redirect('/api/products'));
+
+/** Hareketler sayfası yönlendirmesi. */
+app.get('/movements', (req, res) => res.redirect('/api/stock/movements'));
+
+/** Kategoriler sayfası yönlendirmesi. */
+app.get('/categories', (req, res) => res.redirect('/api/categories'));
+
+/** Rapor sayfası. */
+app.get('/reports', (req, res) => res.redirect('/api/reports/category'));
+
+// --- 404 handler ---
+app.use((req, res) => {
+  if (req.path.startsWith('/api/')) {
+    return res.status(404).json({ error: 'Uç bulunamadı' });
+  }
+  res.status(404).send('<h1>404 — Sayfa bulunamadı</h1><a href="/">Panele dön</a>');
+});
+
+// --- Sunucuyu başlat ---
+app.listen(PORT, () => {
+  // Veri dizinini hazırla (varsayılan kategoriler olsun)
+  categoryModel.readAll();
+  console.log(`✔ Envanter/Stok yönetim sistemi çalışıyor → http://localhost:${PORT}`);
+  console.log(`  Panel   : http://localhost:${PORT}/`);
+  console.log(`  API     : http://localhost:${PORT}/api/products`);
+});