diff --git a/.gitignore b/.gitignore
index 4500b74..f027409 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,6 @@ npm-debug.log
 yarn-error.log
 /.idea
 /.vscode
+
+khaneghi_user/
+.DS_Store
diff --git a/app/Http/Controllers/Admin/CustomerSpecialPricePackageController.php b/app/Http/Controllers/Admin/CustomerSpecialPricePackageController.php
index 74a339f..57e1deb 100644
--- a/app/Http/Controllers/Admin/CustomerSpecialPricePackageController.php
+++ b/app/Http/Controllers/Admin/CustomerSpecialPricePackageController.php
@@ -216,21 +216,40 @@ class CustomerSpecialPricePackageController extends Controller
             throw new UnprocessableEntityHttpException('حداقل یک محصول انتخاب کنید.');
         }
 
-        $profitBuy = (int) preg_replace('/[^\d]/', '', (string) $request->input('profit_buy', 0));
-        $profitSell = (int) preg_replace('/[^\d]/', '', (string) $request->input('profit_sell', 0));
+        $profitBuy = $this->parseSignedRial($request->input('profit_buy', 0));
+        $profitSell = $this->parseSignedRial($request->input('profit_sell', 0));
 
         return [
             'title' => $title,
             'customer_ids' => $customerIds,
             'product_ids' => $productIds,
             'category_names' => $categoryNames,
-            'profit_buy' => max(0, $profitBuy),
-            'profit_sell' => max(0, $profitSell),
+            'profit_buy' => $profitBuy,
+            'profit_sell' => $profitSell,
             'show_product' => filter_var($request->input('show_product', true), FILTER_VALIDATE_BOOLEAN),
             'is_active' => filter_var($request->input('is_active', true), FILTER_VALIDATE_BOOLEAN),
         ];
     }
 
+    private function parseSignedRial(mixed $value): int
+    {
+        $raw = trim((string) $value);
+        $raw = str_replace(["\u{066C}", ',', '٬', ' ', 'ریال'], '', $raw);
+        $raw = strtr($raw, [
+            '۰' => '0', '۱' => '1', '۲' => '2', '۳' => '3', '۴' => '4',
+            '۵' => '5', '۶' => '6', '۷' => '7', '۸' => '8', '۹' => '9',
+            '٠' => '0', '١' => '1', '٢' => '2', '٣' => '3', '٤' => '4',
+            '٥' => '5', '٦' => '6', '٧' => '7', '٨' => '8', '٩' => '9',
+            '−' => '-', '–' => '-', '—' => '-',
+        ]);
+
+        $negative = str_starts_with($raw, '-');
+        $digits = preg_replace('/\D/', '', $raw) ?? '0';
+        $amount = (int) ($digits === '' ? '0' : $digits);
+
+        return $negative ? -$amount : $amount;
+    }
+
     private function syncRelations(CustomerSpecialPricePackage $package, array $data): void
     {
         $package->customers()->sync($data['customer_ids']);
diff --git a/app/Http/Controllers/Single/SingleOrderController.php b/app/Http/Controllers/Single/SingleOrderController.php
index 48d41d4..b862670 100644
--- a/app/Http/Controllers/Single/SingleOrderController.php
+++ b/app/Http/Controllers/Single/SingleOrderController.php
@@ -1461,7 +1461,7 @@ class SingleOrderController extends Controller
             throw new UnprocessableEntityHttpException('این محصول برای شما در دسترس نیست.');
         }
         $specialAmt = $specialSvc->profitForDirection($specialRule, $direction);
-        if ($specialAmt > 0) {
+        if ($specialAmt !== 0) {
             $amount += $specialAmt;
             $keys[] = 'customer_special_pricing';
             $lines[] = [
diff --git a/app/Services/CustomerSpecialPricingService.php b/app/Services/CustomerSpecialPricingService.php
index 0a48389..8572335 100644
--- a/app/Services/CustomerSpecialPricingService.php
+++ b/app/Services/CustomerSpecialPricingService.php
@@ -142,17 +142,17 @@ class CustomerSpecialPricingService
         $buyExtra = (int) ($rule['profit_buy'] ?? 0);
         $sellExtra = (int) ($rule['profit_sell'] ?? 0);
 
-        if (isset($payload['buy']) && (int) $payload['buy'] > 0 && $buyExtra > 0) {
-            $payload['buy'] = (int) $payload['buy'] + $buyExtra;
+        if (isset($payload['buy']) && (int) $payload['buy'] > 0 && $buyExtra !== 0) {
+            $payload['buy'] = max(0, (int) $payload['buy'] + $buyExtra);
         }
-        if (isset($payload['sell']) && (int) $payload['sell'] > 0 && $sellExtra > 0) {
+        if (isset($payload['sell']) && (int) $payload['sell'] > 0 && $sellExtra !== 0) {
             $payload['sell'] = max(0, (int) $payload['sell'] - $sellExtra);
         }
-        if (isset($payload['price_last']) && (int) $payload['price_last'] > 0 && $buyExtra > 0) {
-            $payload['price_last'] = (int) $payload['price_last'] + $buyExtra;
+        if (isset($payload['price_last']) && (int) $payload['price_last'] > 0 && $buyExtra !== 0) {
+            $payload['price_last'] = max(0, (int) $payload['price_last'] + $buyExtra);
         }
-        if (isset($payload['priceLast']) && (int) $payload['priceLast'] > 0 && $buyExtra > 0) {
-            $payload['priceLast'] = (int) $payload['priceLast'] + $buyExtra;
+        if (isset($payload['priceLast']) && (int) $payload['priceLast'] > 0 && $buyExtra !== 0) {
+            $payload['priceLast'] = max(0, (int) $payload['priceLast'] + $buyExtra);
         }
 
         $payload['special_pricing'] = [
diff --git a/database/migrations/2026_08_16_000001_create_customer_special_price_packages_tables.php b/database/migrations/2026_08_16_000001_create_customer_special_price_packages_tables.php
index b93edb1..ac78929 100644
--- a/database/migrations/2026_08_16_000001_create_customer_special_price_packages_tables.php
+++ b/database/migrations/2026_08_16_000001_create_customer_special_price_packages_tables.php
@@ -12,8 +12,8 @@ return new class extends Migration
             Schema::create('customer_special_price_packages', function (Blueprint $table) {
                 $table->id();
                 $table->string('title');
-                $table->unsignedBigInteger('profit_buy')->default(0);
-                $table->unsignedBigInteger('profit_sell')->default(0);
+                $table->bigInteger('profit_buy')->default(0);
+                $table->bigInteger('profit_sell')->default(0);
                 $table->boolean('show_product')->default(true);
                 $table->boolean('is_active')->default(true);
                 $table->timestamps();
diff --git a/database/migrations/2026_08_17_000001_allow_negative_special_price_profits.php b/database/migrations/2026_08_17_000001_allow_negative_special_price_profits.php
new file mode 100644
index 0000000..84676d3
--- /dev/null
+++ b/database/migrations/2026_08_17_000001_allow_negative_special_price_profits.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        if (! Schema::hasTable('customer_special_price_packages')) {
+            return;
+        }
+
+        DB::statement('ALTER TABLE customer_special_price_packages MODIFY profit_buy BIGINT NOT NULL DEFAULT 0');
+        DB::statement('ALTER TABLE customer_special_price_packages MODIFY profit_sell BIGINT NOT NULL DEFAULT 0');
+    }
+
+    public function down(): void
+    {
+        if (! Schema::hasTable('customer_special_price_packages')) {
+            return;
+        }
+
+        DB::statement('ALTER TABLE customer_special_price_packages MODIFY profit_buy BIGINT UNSIGNED NOT NULL DEFAULT 0');
+        DB::statement('ALTER TABLE customer_special_price_packages MODIFY profit_sell BIGINT UNSIGNED NOT NULL DEFAULT 0');
+    }
+};