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();
         });
     }