feat: Complete Z.CRM system with all 6 modules

✨ Features:
- Complete authentication system with JWT
- Dashboard with all 6 modules visible
- Contact Management module (Salesforce-style)
- CRM & Sales Pipeline module (Pipedrive-style)
- Inventory & Assets module (SAP-style)
- Tasks & Projects module (Jira/Asana-style)
- HR Management module (BambooHR-style)
- Marketing Management module (HubSpot-style)
- Admin Panel with user management and role matrix
- World-class UI/UX with RTL Arabic support
- Cairo font (headings) + Readex Pro font (body)
- Sample data for all modules
- Protected routes and authentication flow
- Backend API with Prisma + PostgreSQL
- Comprehensive documentation

🎨 Design:
- Color-coded modules
- Professional data tables
- Stats cards with metrics
- Progress bars and status badges
- Search and filters
- Responsive layout

📊 Tech Stack:
- Frontend: Next.js 14, TypeScript, Tailwind CSS
- Backend: Node.js, Express, Prisma
- Database: PostgreSQL
- Auth: JWT with bcrypt

🚀 Production-ready frontend with all features accessible

frontend/src/app/login/page.tsx

@@ -0,0 +1,136 @@
+'use client'
+
+import { useState, FormEvent } from 'react'
+import { useAuth } from '@/contexts/AuthContext'
+import Link from 'next/link'
+import { LogIn, Mail, Lock, Building2, AlertCircle } from 'lucide-react'
+
+export default function LoginPage() {
+  const { login } = useAuth()
+  const [email, setEmail] = useState('')
+  const [password, setPassword] = useState('')
+  const [error, setError] = useState('')
+  const [isLoading, setIsLoading] = useState(false)
+
+  const handleSubmit = async (e: FormEvent) => {
+    e.preventDefault()
+    setError('')
+    setIsLoading(true)
+
+    try {
+      await login(email, password)
+    } catch (err: any) {
+      setError(err.message || 'فشل تسجيل الدخول. الرجاء المحاولة مرة أخرى.')
+    } finally {
+      setIsLoading(false)
+    }
+  }
+
+  return (
+    <div className="min-h-screen bg-gradient-to-br from-primary-50 via-white to-primary-50 flex items-center justify-center p-4">
+      <div className="w-full max-w-md">
+        {/* Logo and Title */}
+        <div className="text-center mb-8">
+          <Link href="/" className="inline-flex items-center gap-3 mb-4">
+            <div className="bg-primary-600 p-3 rounded-xl">
+              <Building2 className="h-10 w-10 text-white" />
+            </div>
+          </Link>
+          <h1 className="text-3xl font-bold text-gray-900 mb-2">تسجيل الدخول</h1>
+          <p className="text-gray-600">Z.CRM - نظام إدارة علاقات العملاء</p>
+        </div>
+
+        {/* Login Form */}
+        <div className="bg-white rounded-2xl shadow-xl p-8 border border-gray-100">
+          {error && (
+            <div className="mb-6 p-4 bg-red-50 border border-red-200 rounded-lg flex items-start gap-3">
+              <AlertCircle className="h-5 w-5 text-red-600 flex-shrink-0 mt-0.5" />
+              <p className="text-red-800 text-sm">{error}</p>
+            </div>
+          )}
+
+          <form onSubmit={handleSubmit} className="space-y-6">
+            {/* Email Field */}
+            <div>
+              <label htmlFor="email" className="block text-sm font-semibold text-gray-700 mb-2">
+                البريد الإلكتروني
+              </label>
+              <div className="relative">
+                <Mail className="absolute left-3 top-1/2 transform -translate-y-1/2 h-5 w-5 text-gray-400" />
+                <input
+                  id="email"
+                  type="email"
+                  value={email}
+                  onChange={(e) => setEmail(e.target.value)}
+                  required
+                  placeholder="example@atmata.com"
+                  className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-transparent transition-all"
+                  disabled={isLoading}
+                />
+              </div>
+            </div>
+
+            {/* Password Field */}
+            <div>
+              <label htmlFor="password" className="block text-sm font-semibold text-gray-700 mb-2">
+                كلمة المرور
+              </label>
+              <div className="relative">
+                <Lock className="absolute left-3 top-1/2 transform -translate-y-1/2 h-5 w-5 text-gray-400" />
+                <input
+                  id="password"
+                  type="password"
+                  value={password}
+                  onChange={(e) => setPassword(e.target.value)}
+                  required
+                  placeholder="••••••••"
+                  className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-transparent transition-all"
+                  disabled={isLoading}
+                />
+              </div>
+            </div>
+
+            {/* Submit Button */}
+            <button
+              type="submit"
+              disabled={isLoading}
+              className="w-full flex items-center justify-center gap-2 px-6 py-3 bg-primary-600 text-white rounded-lg hover:bg-primary-700 transition-all duration-300 shadow-md hover:shadow-lg disabled:opacity-50 disabled:cursor-not-allowed font-semibold"
+            >
+              {isLoading ? (
+                <>
+                  <div className="animate-spin rounded-full h-5 w-5 border-b-2 border-white"></div>
+                  <span>جاري تسجيل الدخول...</span>
+                </>
+              ) : (
+                <>
+                  <LogIn className="h-5 w-5" />
+                  <span>تسجيل الدخول</span>
+                </>
+              )}
+            </button>
+          </form>
+
+          {/* Demo Credentials */}
+          <div className="mt-6 p-4 bg-blue-50 rounded-lg border border-blue-200">
+            <h3 className="text-sm font-semibold text-blue-900 mb-2">الحسابات التجريبية:</h3>
+            <div className="text-sm text-blue-800 space-y-1">
+              <p>• <strong>المدير العام:</strong> gm@atmata.com / Admin@123</p>
+              <p>• <strong>مدير المبيعات:</strong> sales.manager@atmata.com / Admin@123</p>
+              <p>• <strong>مندوب مبيعات:</strong> sales.rep@atmata.com / Admin@123</p>
+            </div>
+          </div>
+        </div>
+
+        {/* Back to Home */}
+        <div className="text-center mt-6">
+          <Link
+            href="/"
+            className="text-primary-600 hover:text-primary-700 font-medium transition-colors"
+          >
+            العودة إلى الصفحة الرئيسية
+          </Link>
+        </div>
+      </div>
+    </div>
+  )
+}