diff --git a/src/app/dashboard/calendar/page.tsx b/src/app/dashboard/calendar/page.tsx
index fee7964..154781c 100644
--- a/src/app/dashboard/calendar/page.tsx
+++ b/src/app/dashboard/calendar/page.tsx
@@ -25,16 +25,19 @@ export default async function CalendarPage() {
         .order('name')
 
     // Transform data for calendar
-    const events = reservations?.map(res => ({
-        id: res.id,
-        title: `${res.customers?.full_name || 'Müşteri'} ${res.customers?.phone ? `(${res.customers.phone})` : ''}`,
-        start: new Date(res.start_time),
-        end: new Date(res.end_time),
-        resource: res,
-    })) || []
+    const events = reservations?.map(res => {
+        const customer = Array.isArray(res.customers) ? res.customers[0] : res.customers
+        return {
+            id: res.id,
+            title: `${customer?.full_name || 'Müşteri'} ${customer?.phone ? `(${customer.phone})` : ''}`,
+            start: new Date(res.start_time),
+            end: new Date(res.end_time),
+            resource: res,
+        }
+    }) || []
 
     return (
-        <div className="space-y-4 h-full">
+        <div className="h-full -m-4 md:-m-8 p-0">
             <CalendarView events={events} halls={halls || []} />
         </div>
     )
diff --git a/src/app/dashboard/expenses/categories/category-manager.tsx b/src/app/dashboard/expenses/categories/category-manager.tsx
new file mode 100644
index 0000000..784bb32
--- /dev/null
+++ b/src/app/dashboard/expenses/categories/category-manager.tsx
@@ -0,0 +1,127 @@
+'use client'
+
+import { useState } from "react"
+import { Button } from "@/components/ui/button"
+import { Input } from "@/components/ui/input"
+import { Label } from "@/components/ui/label"
+import {
+    Table,
+    TableBody,
+    TableCell,
+    TableHead,
+    TableHeader,
+    TableRow,
+} from "@/components/ui/table"
+import { Trash2 } from "lucide-react"
+import { createClient } from "@/lib/supabase/client"
+import { toast } from "sonner"
+import { useRouter } from "next/navigation"
+
+export function CategoryManager({ initialCategories }: { initialCategories: any[] }) {
+    const [categories, setCategories] = useState(initialCategories)
+    const [newCategory, setNewCategory] = useState("")
+    const [loading, setLoading] = useState(false)
+    const router = useRouter()
+    const supabase = createClient()
+
+    const handleAdd = async (e: React.FormEvent) => {
+        e.preventDefault()
+        if (!newCategory.trim()) return
+
+        setLoading(true)
+        const { data, error } = await supabase
+            .from('expense_categories')
+            .insert({ name: newCategory })
+            .select()
+            .single()
+
+        if (error) {
+            toast.error("Kategori eklenirken hata oluştu")
+            console.error(error)
+        } else {
+            setCategories([data, ...categories])
+            setNewCategory("")
+            toast.success("Kategori eklendi")
+            router.refresh()
+        }
+        setLoading(false)
+    }
+
+    const handleDelete = async (id: string) => {
+        if (!confirm("Bu kategoriyi silmek istediğinize emin misiniz?")) return
+
+        const { error } = await supabase
+            .from('expense_categories')
+            .delete()
+            .eq('id', id)
+
+        if (error) {
+            toast.error("Silinirken hata oluştu. Bu kategoriye bağlı harcamalar olabilir.")
+            console.error(error)
+        } else {
+            setCategories(categories.filter(c => c.id !== id))
+            toast.success("Kategori silindi")
+            router.refresh()
+        }
+    }
+
+    return (
+        <div className="grid gap-6 md:grid-cols-2">
+            <div className="space-y-6">
+                <div className="rounded-lg border bg-card p-6">
+                    <h3 className="text-lg font-medium mb-4">Yeni Kategori Ekle</h3>
+                    <form onSubmit={handleAdd} className="space-y-4">
+                        <div className="space-y-2">
+                            <Label htmlFor="name">Kategori Adı</Label>
+                            <Input
+                                id="name"
+                                placeholder="Örn: Mutfak, Personel, Elektrik"
+                                value={newCategory}
+                                onChange={(e) => setNewCategory(e.target.value)}
+                            />
+                        </div>
+                        <Button type="submit" disabled={loading || !newCategory.trim()}>
+                            {loading ? "Ekleniyor..." : "Ekle"}
+                        </Button>
+                    </form>
+                </div>
+            </div>
+
+            <div className="rounded-lg border bg-card">
+                <Table>
+                    <TableHeader>
+                        <TableRow>
+                            <TableHead>Kategori Adı</TableHead>
+                            <TableHead className="w-[100px]"></TableHead>
+                        </TableRow>
+                    </TableHeader>
+                    <TableBody>
+                        {categories.length === 0 ? (
+                            <TableRow>
+                                <TableCell colSpan={2} className="text-center text-muted-foreground">
+                                    Kategori bulunamadı.
+                                </TableCell>
+                            </TableRow>
+                        ) : (
+                            categories.map((category) => (
+                                <TableRow key={category.id}>
+                                    <TableCell className="font-medium">{category.name}</TableCell>
+                                    <TableCell>
+                                        <Button
+                                            variant="ghost"
+                                            size="icon"
+                                            onClick={() => handleDelete(category.id)}
+                                            className="text-destructive hover:text-destructive/90"
+                                        >
+                                            <Trash2 className="h-4 w-4" />
+                                        </Button>
+                                    </TableCell>
+                                </TableRow>
+                            ))
+                        )}
+                    </TableBody>
+                </Table>
+            </div>
+        </div>
+    )
+}
diff --git a/src/app/dashboard/expenses/categories/page.tsx b/src/app/dashboard/expenses/categories/page.tsx
new file mode 100644
index 0000000..75ad60a
--- /dev/null
+++ b/src/app/dashboard/expenses/categories/page.tsx
@@ -0,0 +1,31 @@
+import { createClient } from "@/lib/supabase/server"
+import { CategoryManager } from "./category-manager"
+import { Button } from "@/components/ui/button"
+import { ArrowLeft } from "lucide-react"
+import Link from "next/link"
+
+export default async function CategoriesPage() {
+    const supabase = await createClient()
+    const { data: categories } = await supabase
+        .from('expense_categories')
+        .select('*')
+        .order('created_at', { ascending: false })
+
+    return (
+        <div className="space-y-6">
+            <div className="flex items-center gap-4">
+                <Link href="/dashboard/expenses">
+                    <Button variant="ghost" size="icon">
+                        <ArrowLeft className="h-4 w-4" />
+                    </Button>
+                </Link>
+                <div>
+                    <h2 className="text-3xl font-bold tracking-tight">Gider Kategorileri</h2>
+                    <p className="text-muted-foreground">Giderlerinizi gruplandırmak için kategoriler oluşturun.</p>
+                </div>
+            </div>
+
+            <CategoryManager initialCategories={categories || []} />
+        </div>
+    )
+}
diff --git a/src/app/dashboard/expenses/new/expense-form.tsx b/src/app/dashboard/expenses/new/expense-form.tsx
new file mode 100644
index 0000000..e84abfa
--- /dev/null
+++ b/src/app/dashboard/expenses/new/expense-form.tsx
@@ -0,0 +1,114 @@
+'use client'
+
+import { useState } from "react"
+import { Button } from "@/components/ui/button"
+import { Input } from "@/components/ui/input"
+import { Label } from "@/components/ui/label"
+import { Textarea } from "@/components/ui/textarea"
+import {
+    Select,
+    SelectContent,
+    SelectItem,
+    SelectTrigger,
+    SelectValue,
+} from "@/components/ui/select"
+import { createClient } from "@/lib/supabase/client"
+import { toast } from "sonner"
+import { useRouter } from "next/navigation"
+import { format } from "date-fns"
+
+export function ExpenseForm({ categories }: { categories: any[] }) {
+    const [loading, setLoading] = useState(false)
+    const router = useRouter()
+    const supabase = createClient()
+
+    const handleSubmit = async (e: React.FormEvent<HTMLFormElement>) => {
+        e.preventDefault()
+        setLoading(true)
+
+        const formData = new FormData(e.currentTarget)
+        const amount = formData.get("amount")
+        const categoryId = formData.get("category_id")
+        const description = formData.get("description")
+        const date = formData.get("date")
+
+        const { error } = await supabase
+            .from('expenses')
+            .insert({
+                amount: parseFloat(amount as string),
+                category_id: categoryId === "general" || !categoryId ? null : categoryId,
+                description,
+                date: new Date(date as string).toISOString(),
+            })
+
+        if (error) {
+            toast.error("Gider eklenirken hata oluştu")
+            console.error(error)
+        } else {
+            toast.success("Gider kaydedildi")
+            router.push("/dashboard/expenses")
+            router.refresh()
+        }
+        setLoading(false)
+    }
+
+    return (
+        <form onSubmit={handleSubmit} className="space-y-6 max-w-lg">
+            <div className="space-y-2">
+                <Label htmlFor="amount">Tutar (TL)</Label>
+                <Input
+                    id="amount"
+                    name="amount"
+                    type="number"
+                    step="0.01"
+                    placeholder="0.00"
+                    required
+                />
+            </div>
+
+            <div className="space-y-2">
+                <Label htmlFor="category_id">Kategori</Label>
+                <Select name="category_id">
+                    <SelectTrigger>
+                        <SelectValue placeholder="Kategori Seçin" />
+                    </SelectTrigger>
+                    <SelectContent>
+                        <SelectItem value="general">Genel</SelectItem>
+                        {categories.map((c) => (
+                            <SelectItem key={c.id} value={c.id}>{c.name}</SelectItem>
+                        ))}
+                    </SelectContent>
+                </Select>
+            </div>
+
+            <div className="space-y-2">
+                <Label htmlFor="date">Tarih</Label>
+                <Input
+                    id="date"
+                    name="date"
+                    type="date"
+                    defaultValue={format(new Date(), 'yyyy-MM-dd')}
+                    required
+                />
+            </div>
+
+            <div className="space-y-2">
+                <Label htmlFor="description">Açıklama</Label>
+                <Textarea
+                    id="description"
+                    name="description"
+                    placeholder="Harcama detayı..."
+                />
+            </div>
+
+            <div className="flex gap-4">
+                <Button type="button" variant="outline" onClick={() => router.back()}>
+                    İptal
+                </Button>
+                <Button type="submit" disabled={loading}>
+                    {loading ? "Kaydediliyor..." : "Kaydet"}
+                </Button>
+            </div>
+        </form>
+    )
+}
diff --git a/src/app/dashboard/expenses/new/page.tsx b/src/app/dashboard/expenses/new/page.tsx
new file mode 100644
index 0000000..bd494bf
--- /dev/null
+++ b/src/app/dashboard/expenses/new/page.tsx
@@ -0,0 +1,33 @@
+import { createClient } from "@/lib/supabase/server"
+import { ExpenseForm } from "./expense-form"
+import { Button } from "@/components/ui/button"
+import { ArrowLeft } from "lucide-react"
+import Link from "next/link"
+
+export default async function NewExpensePage() {
+    const supabase = await createClient()
+    const { data: categories } = await supabase
+        .from('expense_categories')
+        .select('*')
+        .order('name')
+
+    return (
+        <div className="space-y-6">
+            <div className="flex items-center gap-4">
+                <Link href="/dashboard/expenses">
+                    <Button variant="ghost" size="icon">
+                        <ArrowLeft className="h-4 w-4" />
+                    </Button>
+                </Link>
+                <div>
+                    <h2 className="text-3xl font-bold tracking-tight">Yeni Gider</h2>
+                    <p className="text-muted-foreground">Yeni bir harcama kaydı oluşturun.</p>
+                </div>
+            </div>
+
+            <div className="border rounded-lg bg-card p-6">
+                <ExpenseForm categories={categories || []} />
+            </div>
+        </div>
+    )
+}
diff --git a/src/app/dashboard/expenses/page.tsx b/src/app/dashboard/expenses/page.tsx
new file mode 100644
index 0000000..823e5ea
--- /dev/null
+++ b/src/app/dashboard/expenses/page.tsx
@@ -0,0 +1,90 @@
+import { createClient } from "@/lib/supabase/server"
+import { Button } from "@/components/ui/button"
+import { Plus, Settings2 } from "lucide-react"
+import Link from "next/link"
+import {
+    Table,
+    TableBody,
+    TableCell,
+    TableHead,
+    TableHeader,
+    TableRow,
+} from "@/components/ui/table"
+import { format } from "date-fns"
+import { tr } from "date-fns/locale"
+
+export default async function ExpensesPage() {
+    const supabase = await createClient()
+
+    const { data: expenses } = await supabase
+        .from('expenses')
+        .select(`
+            *,
+            expense_categories (name)
+        `)
+        .order('date', { ascending: false })
+
+    return (
+        <div className="space-y-6">
+            <div className="flex items-center justify-between">
+                <div>
+                    <h2 className="text-3xl font-bold tracking-tight">Giderler</h2>
+                    <p className="text-muted-foreground">İşletme giderlerini takip edin.</p>
+                </div>
+                <div className="flex gap-2">
+                    <Link href="/dashboard/expenses/categories">
+                        <Button variant="outline">
+                            <Settings2 className="mr-2 h-4 w-4" />
+                            Kategoriler
+                        </Button>
+                    </Link>
+                    <Link href="/dashboard/expenses/new">
+                        <Button>
+                            <Plus className="mr-2 h-4 w-4" />
+                            Yeni Gider
+                        </Button>
+                    </Link>
+                </div>
+            </div>
+
+            <div className="border rounded-lg bg-white dark:bg-card">
+                <Table>
+                    <TableHeader>
+                        <TableRow>
+                            <TableHead>Tarih</TableHead>
+                            <TableHead>Kategori</TableHead>
+                            <TableHead>Açıklama</TableHead>
+                            <TableHead className="text-right">Tutar</TableHead>
+                        </TableRow>
+                    </TableHeader>
+                    <TableBody>
+                        {!expenses || expenses.length === 0 ? (
+                            <TableRow>
+                                <TableCell colSpan={4} className="text-center h-24 text-muted-foreground">
+                                    Henüz gider kaydı bulunmuyor.
+                                </TableCell>
+                            </TableRow>
+                        ) : (
+                            expenses.map((expense: any) => (
+                                <TableRow key={expense.id}>
+                                    <TableCell>
+                                        {format(new Date(expense.date), 'd MMMM yyyy', { locale: tr })}
+                                    </TableCell>
+                                    <TableCell>
+                                        <span className="inline-flex items-center rounded-md bg-secondary px-2 py-1 text-xs font-medium text-secondary-foreground">
+                                            {expense.expense_categories?.name || 'Genel'}
+                                        </span>
+                                    </TableCell>
+                                    <TableCell>{expense.description}</TableCell>
+                                    <TableCell className="text-right font-medium text-red-600 dark:text-red-400">
+                                        - {new Intl.NumberFormat('tr-TR', { style: 'currency', currency: 'TRY' }).format(expense.amount)}
+                                    </TableCell>
+                                </TableRow>
+                            ))
+                        )}
+                    </TableBody>
+                </Table>
+            </div>
+        </div>
+    )
+}
diff --git a/src/app/dashboard/page.tsx b/src/app/dashboard/page.tsx
index 21dc031..45005e8 100644
--- a/src/app/dashboard/page.tsx
+++ b/src/app/dashboard/page.tsx
@@ -20,14 +20,7 @@ export default async function DashboardPage() {
         .from('customers')
         .select('*', { count: 'exact', head: true })
 
-    // 3. Pending Payments (Sum of remaining balances)
-    // This is complex to calculate in one query without a view or function, 
-    // so we'll approximate or fetch pending payments directly if possible.
-    // For now, let's just count pending reservations as a proxy or fetch recent payments.
-    // Better: Sum of 'amount' from 'payments' where status = 'pending' (if we tracked pending payments that way)
-    // Or: Calculate total potential revenue vs paid revenue.
-    // Let's stick to "Total Revenue" (Paid) for now.
-
+    // 3. Total Revenue (Paid)
     const { data: payments } = await supabase
         .from('payments')
         .select('amount')
@@ -35,7 +28,16 @@ export default async function DashboardPage() {
 
     const totalRevenue = payments?.reduce((sum, p) => sum + Number(p.amount), 0) || 0
 
-    // 4. Upcoming Events (Next 5)
+    // 4. Total Expenses
+    const { data: expensesData } = await supabase
+        .from('expenses')
+        .select('amount')
+
+    const totalExpenses = expensesData?.reduce((sum, e) => sum + Number(e.amount), 0) || 0
+
+    const netProfit = totalRevenue - totalExpenses
+
+    // 5. Upcoming Events (Next 5)
     const { data: upcomingEvents } = await supabase
         .from('reservations')
         .select(`
@@ -50,7 +52,7 @@ export default async function DashboardPage() {
         .order('start_time', { ascending: true })
         .limit(5)
 
-    // 5. Recent Activities (Last 5 created reservations)
+    // 6. Recent Activities (Last 5 created reservations)
     const { data: recentReservations } = await supabase
         .from('reservations')
         .select(`
@@ -71,40 +73,6 @@ export default async function DashboardPage() {
             </div>
 
             <div className="grid gap-6 md:grid-cols-2 lg:grid-cols-4">
-                <Card className="card-hover border-l-4 border-l-blue-500">
-                    <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
-                        <CardTitle className="text-sm font-medium text-muted-foreground">
-                            Toplam Rezervasyon
-                        </CardTitle>
-                        <div className="h-8 w-8 rounded-full bg-blue-100 dark:bg-blue-900/20 flex items-center justify-center">
-                            <CalendarDays className="h-4 w-4 text-blue-600 dark:text-blue-400" />
-                        </div>
-                    </CardHeader>
-                    <CardContent>
-                        <div className="text-3xl font-bold mt-2">{totalReservations || 0}</div>
-                        <p className="text-xs text-muted-foreground mt-1 flex items-center">
-                            Aktif rezervasyonlar
-                        </p>
-                    </CardContent>
-                </Card>
-
-                <Card className="card-hover border-l-4 border-l-purple-500">
-                    <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
-                        <CardTitle className="text-sm font-medium text-muted-foreground">
-                            Toplam Müşteri
-                        </CardTitle>
-                        <div className="h-8 w-8 rounded-full bg-purple-100 dark:bg-purple-900/20 flex items-center justify-center">
-                            <Users className="h-4 w-4 text-purple-600 dark:text-purple-400" />
-                        </div>
-                    </CardHeader>
-                    <CardContent>
-                        <div className="text-3xl font-bold mt-2">{totalCustomers || 0}</div>
-                        <p className="text-xs text-muted-foreground mt-1 flex items-center">
-                            Kayıtlı müşteri sayısı
-                        </p>
-                    </CardContent>
-                </Card>
-
                 <Card className="card-hover border-l-4 border-l-green-500">
                     <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
                         <CardTitle className="text-sm font-medium text-muted-foreground">
@@ -115,12 +83,63 @@ export default async function DashboardPage() {
                         </div>
                     </CardHeader>
                     <CardContent>
-                        <div className="text-3xl font-bold mt-2">₺{totalRevenue.toLocaleString('tr-TR')}</div>
+                        <div className="text-2xl font-bold mt-2">₺{totalRevenue.toLocaleString('tr-TR')}</div>
                         <p className="text-xs text-muted-foreground mt-1 flex items-center">
                             Tahsil edilen ödemeler
                         </p>
                     </CardContent>
                 </Card>
+
+                <Card className="card-hover border-l-4 border-l-red-500">
+                    <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
+                        <CardTitle className="text-sm font-medium text-muted-foreground">
+                            Toplam Gider
+                        </CardTitle>
+                        <div className="h-8 w-8 rounded-full bg-red-100 dark:bg-red-900/20 flex items-center justify-center">
+                            <TrendingUp className="h-4 w-4 text-red-600 dark:text-red-400 rotate-180" />
+                        </div>
+                    </CardHeader>
+                    <CardContent>
+                        <div className="text-2xl font-bold mt-2">₺{totalExpenses.toLocaleString('tr-TR')}</div>
+                        <p className="text-xs text-muted-foreground mt-1 flex items-center">
+                            İşletme giderleri
+                        </p>
+                    </CardContent>
+                </Card>
+
+                <Card className="card-hover border-l-4 border-l-blue-500">
+                    <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
+                        <CardTitle className="text-sm font-medium text-muted-foreground">
+                            Net Kâr
+                        </CardTitle>
+                        <div className="h-8 w-8 rounded-full bg-blue-100 dark:bg-blue-900/20 flex items-center justify-center">
+                            <TrendingUp className="h-4 w-4 text-blue-600 dark:text-blue-400" />
+                        </div>
+                    </CardHeader>
+                    <CardContent>
+                        <div className="text-2xl font-bold mt-2">₺{netProfit.toLocaleString('tr-TR')}</div>
+                        <p className="text-xs text-muted-foreground mt-1 flex items-center">
+                            Gelir - Gider
+                        </p>
+                    </CardContent>
+                </Card>
+
+                <Card className="card-hover border-l-4 border-l-purple-500">
+                    <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
+                        <CardTitle className="text-sm font-medium text-muted-foreground">
+                            Toplam Rezervasyon
+                        </CardTitle>
+                        <div className="h-8 w-8 rounded-full bg-purple-100 dark:bg-purple-900/20 flex items-center justify-center">
+                            <CalendarDays className="h-4 w-4 text-purple-600 dark:text-purple-400" />
+                        </div>
+                    </CardHeader>
+                    <CardContent>
+                        <div className="text-2xl font-bold mt-2">{totalReservations || 0}</div>
+                        <p className="text-xs text-muted-foreground mt-1 flex items-center">
+                            Aktif rezervasyonlar
+                        </p>
+                    </CardContent>
+                </Card>
             </div>
 
             <div className="grid gap-6 md:grid-cols-2 lg:grid-cols-7">
@@ -135,23 +154,27 @@ export default async function DashboardPage() {
                             </div>
                         ) : (
                             <div className="space-y-4">
-                                {upcomingEvents?.map((event) => (
-                                    <div key={event.id} className="flex items-center justify-between p-4 border rounded-lg bg-card hover:bg-accent/50 transition-colors">
-                                        <div className="flex items-center gap-4">
-                                            <div className="h-10 w-10 rounded-full bg-primary/10 flex items-center justify-center text-primary">
-                                                <CalendarIcon className="h-5 w-5" />
+                                {upcomingEvents?.map((event) => {
+                                    const customer = Array.isArray(event.customers) ? event.customers[0] : event.customers
+                                    const hall = Array.isArray(event.halls) ? event.halls[0] : event.halls
+                                    return (
+                                        <div key={event.id} className="flex items-center justify-between p-4 border rounded-lg bg-card hover:bg-accent/50 transition-colors">
+                                            <div className="flex items-center gap-4">
+                                                <div className="h-10 w-10 rounded-full bg-primary/10 flex items-center justify-center text-primary">
+                                                    <CalendarIcon className="h-5 w-5" />
+                                                </div>
+                                                <div>
+                                                    <p className="font-medium">{customer?.full_name}</p>
+                                                    <p className="text-sm text-muted-foreground">{hall?.name}</p>
+                                                </div>
                                             </div>
-                                            <div>
-                                                <p className="font-medium">{event.customers?.full_name}</p>
-                                                <p className="text-sm text-muted-foreground">{event.halls?.name}</p>
+                                            <div className="text-right">
+                                                <p className="font-medium">{format(new Date(event.start_time), 'd MMM yyyy', { locale: tr })}</p>
+                                                <p className="text-sm text-muted-foreground">{format(new Date(event.start_time), 'HH:mm')}</p>
                                             </div>
                                         </div>
-                                        <div className="text-right">
-                                            <p className="font-medium">{format(new Date(event.start_time), 'd MMM yyyy', { locale: tr })}</p>
-                                            <p className="text-sm text-muted-foreground">{format(new Date(event.start_time), 'HH:mm')}</p>
-                                        </div>
-                                    </div>
-                                ))}
+                                    )
+                                })}
                             </div>
                         )}
                     </CardContent>
@@ -162,19 +185,22 @@ export default async function DashboardPage() {
                     </CardHeader>
                     <CardContent>
                         <div className="space-y-4">
-                            {recentReservations?.map((res) => (
-                                <div key={res.id} className="flex items-center gap-4 p-3 rounded-lg hover:bg-muted/50 transition-colors">
-                                    <div className="h-9 w-9 rounded-full bg-primary/10 flex items-center justify-center text-primary font-bold text-sm">
-                                        {res.customers?.full_name?.substring(0, 2).toUpperCase()}
+                            {recentReservations?.map((res) => {
+                                const customer = Array.isArray(res.customers) ? res.customers[0] : res.customers
+                                return (
+                                    <div key={res.id} className="flex items-center gap-4 p-3 rounded-lg hover:bg-muted/50 transition-colors">
+                                        <div className="h-9 w-9 rounded-full bg-primary/10 flex items-center justify-center text-primary font-bold text-sm">
+                                            {customer?.full_name?.substring(0, 2).toUpperCase()}
+                                        </div>
+                                        <div className="flex-1">
+                                            <p className="text-sm font-medium">{customer?.full_name} rezervasyon oluşturdu</p>
+                                            <p className="text-xs text-muted-foreground">
+                                                {format(new Date(res.created_at), 'd MMM HH:mm', { locale: tr })}
+                                            </p>
+                                        </div>
                                     </div>
-                                    <div className="flex-1">
-                                        <p className="text-sm font-medium">{res.customers?.full_name} rezervasyon oluşturdu</p>
-                                        <p className="text-xs text-muted-foreground">
-                                            {format(new Date(res.created_at), 'd MMM HH:mm', { locale: tr })}
-                                        </p>
-                                    </div>
-                                </div>
-                            ))}
+                                )
+                            })}
                             {recentReservations?.length === 0 && (
                                 <p className="text-sm text-muted-foreground text-center py-4">Henüz işlem yok.</p>
                             )}
diff --git a/src/app/dashboard/reservations/[id]/actions.ts b/src/app/dashboard/reservations/[id]/actions.ts
index 539a75e..4184ef2 100644
--- a/src/app/dashboard/reservations/[id]/actions.ts
+++ b/src/app/dashboard/reservations/[id]/actions.ts
@@ -32,6 +32,22 @@ export async function addPayment(reservationId: string, formData: FormData) {
     revalidatePath(`/dashboard/reservations/${reservationId}`)
 }
 
+export async function deletePayment(id: string, reservationId: string) {
+    const supabase = await createClient()
+    const { error } = await supabase.from('payments').delete().eq('id', id)
+    if (error) throw new Error(error.message)
+    await logAction('delete_payment', 'payment', id, { reservationId })
+    revalidatePath(`/dashboard/reservations/${reservationId}`)
+}
+
+export async function cancelPayment(id: string, reservationId: string) {
+    const supabase = await createClient()
+    const { error } = await supabase.from('payments').update({ status: 'refunded' }).eq('id', id)
+    if (error) throw new Error(error.message)
+    await logAction('cancel_payment', 'payment', id, { reservationId })
+    revalidatePath(`/dashboard/reservations/${reservationId}`)
+}
+
 export async function updateStatus(id: string, status: string) {
     const supabase = await createClient()
 
@@ -42,6 +58,15 @@ export async function updateStatus(id: string, status: string) {
 
     if (error) throw new Error(error.message)
 
+    if (status === 'cancelled') {
+        const { error: paymentError } = await supabase
+            .from('payments')
+            .update({ status: 'refunded' })
+            .eq('reservation_id', id)
+
+        if (paymentError) console.error("Error cancelling payments:", paymentError)
+    }
+
     await logAction('update_reservation_status', 'reservation', id, { status })
 
     revalidatePath(`/dashboard/reservations/${id}`)
@@ -61,3 +86,20 @@ export async function deleteReservation(id: string) {
     await logAction('delete_reservation', 'reservation', id)
     revalidatePath('/dashboard/reservations')
 }
+
+export async function updateReservationFinancials(id: string, packageId: string | null, price: number) {
+    const supabase = await createClient()
+
+    const { error } = await supabase
+        .from('reservations')
+        .update({
+            package_id: packageId,
+            price: price
+        })
+        .eq('id', id)
+
+    if (error) throw new Error(error.message)
+
+    await logAction('update_reservation_financials', 'reservation', id, { packageId, price })
+    revalidatePath(`/dashboard/reservations/${id}`)
+}
diff --git a/src/app/dashboard/reservations/[id]/financials-editor.tsx b/src/app/dashboard/reservations/[id]/financials-editor.tsx
new file mode 100644
index 0000000..c5076b8
--- /dev/null
+++ b/src/app/dashboard/reservations/[id]/financials-editor.tsx
@@ -0,0 +1,122 @@
+'use client'
+
+import { useState } from "react"
+import { Button } from "@/components/ui/button"
+import { Input } from "@/components/ui/input"
+import { Label } from "@/components/ui/label"
+import {
+    Select,
+    SelectContent,
+    SelectItem,
+    SelectTrigger,
+    SelectValue,
+} from "@/components/ui/select"
+import {
+    Dialog,
+    DialogContent,
+    DialogDescription,
+    DialogFooter,
+    DialogHeader,
+    DialogTitle,
+    DialogTrigger,
+} from "@/components/ui/dialog"
+import { Edit2 } from "lucide-react"
+import { updateReservationFinancials } from "./actions"
+import { toast } from "sonner"
+
+interface FinancialsEditorProps {
+    reservationId: string
+    currentPackageId: string | null
+    currentPrice: number
+    packages: any[]
+}
+
+export function FinancialsEditor({ reservationId, currentPackageId, currentPrice, packages }: FinancialsEditorProps) {
+    const [open, setOpen] = useState(false)
+    const [loading, setLoading] = useState(false)
+    const [packageId, setPackageId] = useState<string>(currentPackageId || "custom")
+    const [price, setPrice] = useState<number>(currentPrice)
+
+    const handlePackageChange = (value: string) => {
+        setPackageId(value)
+        if (value !== "custom") {
+            const selectedPkg = packages.find(p => p.id === value)
+            if (selectedPkg) {
+                setPrice(selectedPkg.price)
+            }
+        }
+    }
+
+    const handleSubmit = async (e: React.FormEvent) => {
+        e.preventDefault()
+        setLoading(true)
+
+        try {
+            await updateReservationFinancials(
+                reservationId,
+                packageId === "custom" ? null : packageId,
+                price
+            )
+            toast.success("Finansal bilgiler güncellendi")
+            setOpen(false)
+        } catch (error) {
+            toast.error("Güncellenirken hata oluştu")
+            console.error(error)
+        } finally {
+            setLoading(false)
+        }
+    }
+
+    return (
+        <Dialog open={open} onOpenChange={setOpen}>
+            <DialogTrigger asChild>
+                <Button variant="ghost" size="icon" className="h-6 w-6 ml-2">
+                    <Edit2 className="h-3 w-3" />
+                </Button>
+            </DialogTrigger>
+            <DialogContent>
+                <DialogHeader>
+                    <DialogTitle>Tutar ve Paket Düzenle</DialogTitle>
+                    <DialogDescription>
+                        Rezervasyonun paketini ve toplam tutarını güncelleyin.
+                    </DialogDescription>
+                </DialogHeader>
+                <form onSubmit={handleSubmit} className="space-y-4">
+                    <div className="space-y-2">
+                        <Label>Paket Seçimi</Label>
+                        <Select value={packageId} onValueChange={handlePackageChange}>
+                            <SelectTrigger>
+                                <SelectValue placeholder="Paket Seçin" />
+                            </SelectTrigger>
+                            <SelectContent>
+                                <SelectItem value="custom">Özel (Paketsiz)</SelectItem>
+                                {packages.map(pkg => (
+                                    <SelectItem key={pkg.id} value={pkg.id}>
+                                        {pkg.name} - {pkg.price} TL
+                                    </SelectItem>
+                                ))}
+                            </SelectContent>
+                        </Select>
+                    </div>
+
+                    <div className="space-y-2">
+                        <Label>Toplam Tutar (₺)</Label>
+                        <Input
+                            type="number"
+                            value={price}
+                            onChange={(e) => setPrice(Number(e.target.value))}
+                            step="0.01"
+                            min="0"
+                        />
+                    </div>
+
+                    <DialogFooter>
+                        <Button type="submit" disabled={loading}>
+                            {loading ? "Kaydediliyor..." : "Kaydet"}
+                        </Button>
+                    </DialogFooter>
+                </form>
+            </DialogContent>
+        </Dialog>
+    )
+}
diff --git a/src/app/dashboard/reservations/[id]/page.tsx b/src/app/dashboard/reservations/[id]/page.tsx
index 535347e..f0d3b68 100644
--- a/src/app/dashboard/reservations/[id]/page.tsx
+++ b/src/app/dashboard/reservations/[id]/page.tsx
@@ -10,6 +10,7 @@ import { ArrowLeft, Calendar, Clock, MapPin, User, CreditCard } from "lucide-rea
 import Link from "next/link"
 import { PaymentList } from "./payment-list"
 import { StatusActions } from "./status-actions"
+import { FinancialsEditor } from "./financials-editor"
 
 export default async function ReservationDetailsPage({
     params,
@@ -34,6 +35,12 @@ export default async function ReservationDetailsPage({
         notFound()
     }
 
+    const { data: packages } = await supabase
+        .from('packages')
+        .select('*')
+        .eq('is_active', true)
+        .order('price')
+
     const { data: payments } = await supabase
         .from('payments')
         .select('*')
@@ -41,8 +48,9 @@ export default async function ReservationDetailsPage({
         .order('created_at', { ascending: false })
 
     const totalPaid = payments?.reduce((sum, p) => sum + (p.status === 'paid' ? Number(p.amount) : 0), 0) || 0
-    const packagePrice = reservation.packages?.price || 0
-    const remaining = Math.max(0, packagePrice - totalPaid)
+    // Use reservation.price if set (custom override), otherwise fallback to package price
+    const effectivePrice = reservation.price ?? reservation.packages?.price ?? 0
+    const remaining = Math.max(0, effectivePrice - totalPaid)
 
     return (
         <div className="space-y-6">
@@ -132,9 +140,17 @@ export default async function ReservationDetailsPage({
                     <CardContent>
                         <div className="grid grid-cols-1 md:grid-cols-3 gap-6 mb-6">
                             <div className="bg-muted/50 p-4 rounded-lg">
-                                <p className="text-sm font-medium text-muted-foreground">Toplam Tutar</p>
-                                <p className="text-2xl font-bold">₺{packagePrice}</p>
-                                <p className="text-xs text-muted-foreground">{reservation.packages?.name || "Paket Yok"}</p>
+                                <div className="flex items-center justify-between mb-1">
+                                    <p className="text-sm font-medium text-muted-foreground">Toplam Tutar</p>
+                                    <FinancialsEditor
+                                        reservationId={reservation.id}
+                                        currentPackageId={reservation.package_id}
+                                        currentPrice={effectivePrice}
+                                        packages={packages || []}
+                                    />
+                                </div>
+                                <p className="text-2xl font-bold">₺{effectivePrice}</p>
+                                <p className="text-xs text-muted-foreground">{reservation.packages?.name || "Özel Fiyat / Paket Yok"}</p>
                             </div>
                             <div className="bg-green-500/10 p-4 rounded-lg">
                                 <p className="text-sm font-medium text-green-600">Ödenen</p>
diff --git a/src/app/dashboard/reservations/[id]/payment-list.tsx b/src/app/dashboard/reservations/[id]/payment-list.tsx
index 026e5a0..e49d194 100644
--- a/src/app/dashboard/reservations/[id]/payment-list.tsx
+++ b/src/app/dashboard/reservations/[id]/payment-list.tsx
@@ -14,10 +14,18 @@ import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select"
 import { useState } from "react"
-import { addPayment } from "./actions"
+import { addPayment, deletePayment, cancelPayment } from "./actions"
 import { format } from "date-fns"
 import { tr } from "date-fns/locale"
 import { Badge } from "@/components/ui/badge"
+import {
+    DropdownMenu,
+    DropdownMenuContent,
+    DropdownMenuItem,
+    DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu"
+import { MoreVertical, Trash2, Ban } from "lucide-react"
+import { toast } from "sonner"
 
 interface PaymentListProps {
     reservationId: string
@@ -36,13 +44,34 @@ export function PaymentList({ reservationId, payments }: PaymentListProps) {
         try {
             await addPayment(reservationId, formData)
             setOpen(false)
+            toast.success("Ödeme eklendi")
         } catch (error) {
-            alert("Ödeme eklenirken hata oluştu")
+            toast.error("Ödeme eklenirken hata oluştu")
         } finally {
             setLoading(false)
         }
     }
 
+    const handleDelete = async (id: string) => {
+        if (!confirm("Bu ödemeyi silmek istediğinize emin misiniz?")) return
+        try {
+            await deletePayment(id, reservationId)
+            toast.success("Ödeme silindi")
+        } catch (error) {
+            toast.error("Silinirken hata oluştu")
+        }
+    }
+
+    const handleCancel = async (id: string) => {
+        if (!confirm("Bu ödemeyi iptal/iade etmek istediğinize emin misiniz?")) return
+        try {
+            await cancelPayment(id, reservationId)
+            toast.success("Ödeme iptal edildi")
+        } catch (error) {
+            toast.error("İptal edilirken hata oluştu")
+        }
+    }
+
     return (
         <div className="space-y-4">
             <div className="flex items-center justify-between">
@@ -108,12 +137,13 @@ export function PaymentList({ reservationId, payments }: PaymentListProps) {
                             <th className="h-10 px-4 text-left font-medium">Tür</th>
                             <th className="h-10 px-4 text-left font-medium">Yöntem</th>
                             <th className="h-10 px-4 text-left font-medium">Durum</th>
+                            <th className="h-10 px-4 text-right font-medium">İşlemler</th>
                         </tr>
                     </thead>
                     <tbody>
                         {payments.length === 0 ? (
                             <tr>
-                                <td colSpan={5} className="h-24 text-center text-muted-foreground">
+                                <td colSpan={6} className="h-24 text-center text-muted-foreground">
                                     Henüz ödeme kaydı yok.
                                 </td>
                             </tr>
@@ -133,10 +163,40 @@ export function PaymentList({ reservationId, payments }: PaymentListProps) {
                                             payment.payment_method === 'credit_card' ? 'Kredi Kartı' : 'Havale'}
                                     </td>
                                     <td className="p-4">
-                                        <Badge variant="outline" className="bg-green-50 text-green-700 border-green-200">
-                                            Ödendi
+                                        <Badge variant="outline" className={
+                                            payment.status === 'refunded'
+                                                ? "bg-red-50 text-red-700 border-red-200"
+                                                : "bg-green-50 text-green-700 border-green-200"
+                                        }>
+                                            {payment.status === 'refunded' ? 'İade/İptal' : 'Ödendi'}
                                         </Badge>
                                     </td>
+                                    <td className="p-4 text-right">
+                                        <DropdownMenu>
+                                            <DropdownMenuTrigger asChild>
+                                                <Button variant="ghost" size="icon" className="h-8 w-8">
+                                                    <MoreVertical className="h-4 w-4" />
+                                                </Button>
+                                            </DropdownMenuTrigger>
+                                            <DropdownMenuContent align="end">
+                                                <DropdownMenuItem
+                                                    className="text-destructive focus:text-destructive"
+                                                    onClick={() => handleCancel(payment.id)}
+                                                    disabled={payment.status === 'refunded'}
+                                                >
+                                                    <Ban className="mr-2 h-4 w-4" />
+                                                    İptal / İade Et
+                                                </DropdownMenuItem>
+                                                <DropdownMenuItem
+                                                    className="text-destructive focus:text-destructive"
+                                                    onClick={() => handleDelete(payment.id)}
+                                                >
+                                                    <Trash2 className="mr-2 h-4 w-4" />
+                                                    Sil
+                                                </DropdownMenuItem>
+                                            </DropdownMenuContent>
+                                        </DropdownMenu>
+                                    </td>
                                 </tr>
                             ))
                         )}
diff --git a/src/app/globals.css b/src/app/globals.css
index d64e77e..dd55319 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -54,7 +54,7 @@
   --card-foreground: 224 71.4% 4.1%;
   --popover: 0 0% 100%;
   --popover-foreground: 224 71.4% 4.1%;
-  --primary: 262.1 83.3% 57.8%;
+  --primary: 268 75% 50%;
   --primary-foreground: 210 20% 98%;
   --secondary: 220 14.3% 95.9%;
   --secondary-foreground: 220.9 39.3% 11%;
@@ -66,7 +66,7 @@
   --destructive-foreground: 210 20% 98%;
   --border: 220 13% 91%;
   --input: 220 13% 91%;
-  --ring: 262.1 83.3% 57.8%;
+  --ring: 268 75% 50%;
   --radius: 0.75rem;
   --chart-1: 12 76% 61%;
   --chart-2: 173 58% 39%;
@@ -82,7 +82,7 @@
   --card-foreground: 210 20% 98%;
   --popover: 224 71.4% 4.1%;
   --popover-foreground: 210 20% 98%;
-  --primary: 263.4 70% 50.4%;
+  --primary: 268 75% 60%;
   --primary-foreground: 210 20% 98%;
   --secondary: 215 27.9% 16.9%;
   --secondary-foreground: 210 20% 98%;
@@ -94,7 +94,7 @@
   --destructive-foreground: 210 20% 98%;
   --border: 215 27.9% 16.9%;
   --input: 215 27.9% 16.9%;
-  --ring: 263.4 70% 50.4%;
+  --ring: 268 75% 60%;
   --chart-1: 220 70% 50%;
   --chart-2: 160 60% 45%;
   --chart-3: 30 80% 55%;
diff --git a/src/components/calendar-view.tsx b/src/components/calendar-view.tsx
index c7affa5..a533020 100644
--- a/src/components/calendar-view.tsx
+++ b/src/components/calendar-view.tsx
@@ -55,8 +55,8 @@ export function CalendarView({ events = [], halls = [] }: CalendarViewProps) {
     }
 
     return (
-        <Card className="h-[calc(100vh-10rem)] min-h-[500px] flex flex-col">
-            <CardHeader className="flex flex-col md:flex-row items-start md:items-center justify-between space-y-2 md:space-y-0 pb-4">
+        <Card className="h-[calc(100vh-4rem)] flex flex-col border-0 shadow-none rounded-none">
+            <CardHeader className="flex flex-col md:flex-row items-start md:items-center justify-between space-y-2 md:space-y-0 px-4 py-2">
                 <CardTitle>Rezervasyon Takvimi</CardTitle>
                 <div className="w-full md:w-[200px]">
                     <Select value={selectedHallId} onValueChange={setSelectedHallId}>
@@ -72,7 +72,7 @@ export function CalendarView({ events = [], halls = [] }: CalendarViewProps) {
                     </Select>
                 </div>
             </CardHeader>
-            <CardContent className="flex-1 pb-4 overflow-hidden">
+            <CardContent className="flex-1 p-0 overflow-hidden">
                 <ContextMenu>
                     <ContextMenuTrigger className="h-full w-full">
                         <div className="h-full w-full overflow-x-auto">
diff --git a/src/components/main-nav.tsx b/src/components/main-nav.tsx
index 0fae936..46127ac 100644
--- a/src/components/main-nav.tsx
+++ b/src/components/main-nav.tsx
@@ -4,7 +4,7 @@ import Link from "next/link"
 import { usePathname } from "next/navigation"
 import { cn } from "@/lib/utils"
 import { Button } from "@/components/ui/button"
-import { CalendarDays, Users, Home, Settings, Building2, CreditCard, LogOut } from "lucide-react"
+import { CalendarDays, Users, Home, Settings, Building2, CreditCard, LogOut, Receipt } from "lucide-react"
 
 interface MainNavProps extends React.HTMLAttributes<HTMLElement> {
     onNavClick?: () => void
@@ -48,6 +48,12 @@ export function MainNav({
             icon: Building2,
             active: pathname.startsWith("/dashboard/halls"),
         },
+        {
+            href: "/dashboard/expenses",
+            label: "Giderler",
+            icon: Receipt,
+            active: pathname.startsWith("/dashboard/expenses"),
+        },
         {
             href: "/dashboard/settings",
             label: "Ayarlar",
diff --git a/src/lib/supabase/middleware.ts b/src/lib/supabase/session.ts
similarity index 100%
rename from src/lib/supabase/middleware.ts
rename to src/lib/supabase/session.ts
diff --git a/src/middleware.ts b/src/middleware.ts
index f3faf25..17348eb 100644
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -1,5 +1,5 @@
 import { type NextRequest } from 'next/server'
-import { updateSession } from '@/lib/supabase/middleware'
+import { updateSession } from '@/lib/supabase/session'
 
 export async function middleware(request: NextRequest) {
     return await updateSession(request)
diff --git a/supabase_schema_expenses.sql b/supabase_schema_expenses.sql
new file mode 100644
index 0000000..f48e77f
--- /dev/null
+++ b/supabase_schema_expenses.sql
@@ -0,0 +1,25 @@
+-- Create Expense Categories Table
+create table expense_categories (
+  id uuid default uuid_generate_v4() primary key,
+  name text not null,
+  description text,
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- Create Expenses Table
+create table expenses (
+  id uuid default uuid_generate_v4() primary key,
+  category_id uuid references expense_categories(id) on delete set null,
+  amount decimal(10,2) not null,
+  description text,
+  date timestamp with time zone default timezone('utc'::text, now()) not null,
+  created_by uuid references auth.users(id),
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- RLS
+alter table expense_categories enable row level security;
+alter table expenses enable row level security;
+
+create policy "Enable all access for authenticated users" on expense_categories for all using (auth.role() = 'authenticated');
+create policy "Enable all access for authenticated users" on expenses for all using (auth.role() = 'authenticated');
diff --git a/supabase_schema_update_price.sql b/supabase_schema_update_price.sql
new file mode 100644
index 0000000..787bbdf
--- /dev/null
+++ b/supabase_schema_update_price.sql
@@ -0,0 +1,8 @@
+-- Add price column to reservations table
+alter table reservations add column price decimal(10,2);
+
+-- Optional: Update existing reservations to set price from their package (snapshotting the price)
+update reservations 
+set price = packages.price
+from packages
+where reservations.package_id = packages.id;