fix: resolve login button overflow and improve form layout spacing

database/migrations/2026_06_27_132957_create_add_cards_table.php

@@ -12,9 +12,9 @@ return new class extends Migration
     public function up(): void
     {
         Schema::create('add_card', function (Blueprint $table) {
-            $table->string('buyer');
+            $table->integer('buyer');
             $table->integer('num_card');
-            $table->string('seller');
+            $table->integer('seller');
             $table->date('date')->nullable();
         });
     }

database/seeders/MockDataSeeder.php

@@ -110,9 +110,9 @@ class MockDataSeeder extends Seeder
 
         foreach ($addCardLogs as $index => $log) {
             AddCard::create([
-                'buyer' => 100 + $index, // Dummy int ID because the DB column is designed as int instead of string msnv
+                'buyer' => abs(crc32($log['buyer'])) % 1000000,
                 'num_card' => $log['num_card'],
-                'seller' => $adminId,
+                'seller' => abs(crc32('ADMIN')) % 1000000,
                 'date' => $log['date']
             ]);
         }