diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index dc0cc13..83e80e6 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -22,5 +22,3 @@ jobs:
             composer install
             php artisan migrate --force
             php artisan cache:clear
-            npm ci
-            npm run build
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..a7135b9
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,32 @@
+name: CI-BUILD-TEST
+on: [ push, pull_request ]
+
+jobs:
+  coding-standard:
+    name: Coding Standard
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.3'
+          coverage: none
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v1
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer install --no-progress --no-suggest --prefer-dist --no-interaction --ignore-platform-reqs
+
+      - name: Check coding style
+        run: composer cs-check
diff --git a/app/Models/Achievement.php b/app/Models/Achievement.php
new file mode 100644
index 0000000..468fb1f
--- /dev/null
+++ b/app/Models/Achievement.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Achievement extends Model
+{
+    use HasFactory;
+
+    protected $fillable = ['name', 'description', 'image_id'];
+
+    public function challenges()
+    {
+        return $this->hasMany(Challenge::class);
+    }
+
+    public function image()
+    {
+        return $this->belongsTo(Image::class);
+    }
+}
diff --git a/app/Models/Category.php b/app/Models/Category.php
new file mode 100644
index 0000000..db6da00
--- /dev/null
+++ b/app/Models/Category.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Category extends Model
+{
+    use HasFactory;
+
+    protected $fillable = ['name'];
+
+    public  function  challenges ()
+     {
+          return $this->hasMany(Challenge::class);
+    }
+}
diff --git a/app/Models/Challenge.php b/app/Models/Challenge.php
new file mode 100644
index 0000000..b9fa4bb
--- /dev/null
+++ b/app/Models/Challenge.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Challenge extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'name',
+        'description',
+        'category_id',
+        'start_date',
+        'end_date',
+        'achievement_id',
+        'image_id'
+    ];
+
+    public function users()
+    {
+        return $this->belongsToMany(User::class, 'users_challenges');
+    }
+
+    public function image()
+    {
+        return $this->belongsTo(Image::class);
+    }
+
+    public function category()
+    {
+        return $this->belongsTo(Category::class);
+    }
+
+    public function achievement()
+    {
+        return $this->belongsTo(Achievement::class);
+    }
+}
diff --git a/app/Models/Image.php b/app/Models/Image.php
new file mode 100644
index 0000000..ca530ba
--- /dev/null
+++ b/app/Models/Image.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Image extends Model
+{
+    use HasFactory;
+
+    protected $fillable = ['image_path'];
+
+    public function users()
+    {
+        return $this->hasMany(User::class);
+    }
+
+    public function challenges()
+    {
+        return $this->hasMany(Challenge::class);
+    }
+
+    public function achievements()
+    {
+        return $this->hasMany(Achievement::class);
+    }
+}
diff --git a/app/Models/User.php b/app/Models/User.php
index 3dfbd80..958bb48 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -19,10 +19,24 @@ class User extends Authenticatable
      */
     protected $fillable = [
         'name',
+        'surname',
         'email',
         'password',
+        'about',
+        'image_id',
+        'is_admin'
     ];
 
+    public function challenges()
+    {
+        return $this->belongsToMany(Challenge::class, 'users_challenges');
+    }
+
+    public function image()
+    {
+        return $this->belongsTo(Image::class);
+    }
+
     /**
      * The attributes that should be hidden for serialization.
      *
diff --git a/composer.json b/composer.json
index efc0f7e..82ad9c4 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,9 @@
         "laravel/sail": "^1.26",
         "mockery/mockery": "^1.6",
         "nunomaduro/collision": "^8.1",
-        "phpunit/phpunit": "^11.0.1"
+        "phpunit/phpunit": "^11.0.1",
+        "slevomat/coding-standard": "^8.15",
+        "squizlabs/php_codesniffer": "^3.10"
     },
     "autoload": {
         "psr-4": {
@@ -50,7 +52,9 @@
         "dev": [
             "Composer\\Config::disableProcessTimeout",
             "npx concurrently -c \"#93c5fd,#c4b5fd,#fb7185,#fdba74\" \"php artisan serve\" \"php artisan queue:listen --tries=1\" \"php artisan pail --timeout=0\" \"npm run dev\" --names=server,queue,logs,vite"
-        ]
+        ],
+        "cs-check": "phpcs",
+        "cs-fix": "phpcbf"
     },
     "extra": {
         "laravel": {
@@ -63,7 +67,8 @@
         "sort-packages": true,
         "allow-plugins": {
             "pestphp/pest-plugin": true,
-            "php-http/discovery": true
+            "php-http/discovery": true,
+            "dealerdirect/phpcodesniffer-composer-installer": true
         }
     },
     "minimum-stability": "stable",
diff --git a/composer.lock b/composer.lock
index 5cfa736..d3240a6 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "071932fc77f95477cb014ca9c6d9152d",
+    "content-hash": "58d2205fe8a263a17422e92586c0298c",
     "packages": [
         {
             "name": "anourvalar/eloquent-serialize",
@@ -7455,6 +7455,84 @@
         }
     ],
     "packages-dev": [
+        {
+            "name": "dealerdirect/phpcodesniffer-composer-installer",
+            "version": "v1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHPCSStandards/composer-installer.git",
+                "reference": "4be43904336affa5c2f70744a348312336afd0da"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHPCSStandards/composer-installer/zipball/4be43904336affa5c2f70744a348312336afd0da",
+                "reference": "4be43904336affa5c2f70744a348312336afd0da",
+                "shasum": ""
+            },
+            "require": {
+                "composer-plugin-api": "^1.0 || ^2.0",
+                "php": ">=5.4",
+                "squizlabs/php_codesniffer": "^2.0 || ^3.1.0 || ^4.0"
+            },
+            "require-dev": {
+                "composer/composer": "*",
+                "ext-json": "*",
+                "ext-zip": "*",
+                "php-parallel-lint/php-parallel-lint": "^1.3.1",
+                "phpcompatibility/php-compatibility": "^9.0",
+                "yoast/phpunit-polyfills": "^1.0"
+            },
+            "type": "composer-plugin",
+            "extra": {
+                "class": "PHPCSStandards\\Composer\\Plugin\\Installers\\PHPCodeSniffer\\Plugin"
+            },
+            "autoload": {
+                "psr-4": {
+                    "PHPCSStandards\\Composer\\Plugin\\Installers\\PHPCodeSniffer\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Franck Nijhof",
+                    "email": "franck.nijhof@dealerdirect.com",
+                    "homepage": "http://www.frenck.nl",
+                    "role": "Developer / IT Manager"
+                },
+                {
+                    "name": "Contributors",
+                    "homepage": "https://github.com/PHPCSStandards/composer-installer/graphs/contributors"
+                }
+            ],
+            "description": "PHP_CodeSniffer Standards Composer Installer Plugin",
+            "homepage": "http://www.dealerdirect.com",
+            "keywords": [
+                "PHPCodeSniffer",
+                "PHP_CodeSniffer",
+                "code quality",
+                "codesniffer",
+                "composer",
+                "installer",
+                "phpcbf",
+                "phpcs",
+                "plugin",
+                "qa",
+                "quality",
+                "standard",
+                "standards",
+                "style guide",
+                "stylecheck",
+                "tests"
+            ],
+            "support": {
+                "issues": "https://github.com/PHPCSStandards/composer-installer/issues",
+                "source": "https://github.com/PHPCSStandards/composer-installer"
+            },
+            "time": "2023-01-05T11:28:13+00:00"
+        },
         {
             "name": "fakerphp/faker",
             "version": "v1.23.1",
@@ -8204,6 +8282,53 @@
             },
             "time": "2022-02-21T01:04:05+00:00"
         },
+        {
+            "name": "phpstan/phpdoc-parser",
+            "version": "1.33.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpdoc-parser.git",
+                "reference": "82a311fd3690fb2bf7b64d5c98f912b3dd746140"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpdoc-parser/zipball/82a311fd3690fb2bf7b64d5c98f912b3dd746140",
+                "reference": "82a311fd3690fb2bf7b64d5c98f912b3dd746140",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2 || ^8.0"
+            },
+            "require-dev": {
+                "doctrine/annotations": "^2.0",
+                "nikic/php-parser": "^4.15",
+                "php-parallel-lint/php-parallel-lint": "^1.2",
+                "phpstan/extension-installer": "^1.0",
+                "phpstan/phpstan": "^1.5",
+                "phpstan/phpstan-phpunit": "^1.1",
+                "phpstan/phpstan-strict-rules": "^1.0",
+                "phpunit/phpunit": "^9.5",
+                "symfony/process": "^5.2"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "PHPStan\\PhpDocParser\\": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPDoc parser with support for nullable, intersection and generic types",
+            "support": {
+                "issues": "https://github.com/phpstan/phpdoc-parser/issues",
+                "source": "https://github.com/phpstan/phpdoc-parser/tree/1.33.0"
+            },
+            "time": "2024-10-13T11:25:22+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "11.0.7",
@@ -9550,6 +9675,151 @@
             ],
             "time": "2024-10-09T05:16:32+00:00"
         },
+        {
+            "name": "slevomat/coding-standard",
+            "version": "8.15.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/slevomat/coding-standard.git",
+                "reference": "7d1d957421618a3803b593ec31ace470177d7817"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/slevomat/coding-standard/zipball/7d1d957421618a3803b593ec31ace470177d7817",
+                "reference": "7d1d957421618a3803b593ec31ace470177d7817",
+                "shasum": ""
+            },
+            "require": {
+                "dealerdirect/phpcodesniffer-composer-installer": "^0.6.2 || ^0.7 || ^1.0",
+                "php": "^7.2 || ^8.0",
+                "phpstan/phpdoc-parser": "^1.23.1",
+                "squizlabs/php_codesniffer": "^3.9.0"
+            },
+            "require-dev": {
+                "phing/phing": "2.17.4",
+                "php-parallel-lint/php-parallel-lint": "1.3.2",
+                "phpstan/phpstan": "1.10.60",
+                "phpstan/phpstan-deprecation-rules": "1.1.4",
+                "phpstan/phpstan-phpunit": "1.3.16",
+                "phpstan/phpstan-strict-rules": "1.5.2",
+                "phpunit/phpunit": "8.5.21|9.6.8|10.5.11"
+            },
+            "type": "phpcodesniffer-standard",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "8.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "SlevomatCodingStandard\\": "SlevomatCodingStandard/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Slevomat Coding Standard for PHP_CodeSniffer complements Consistence Coding Standard by providing sniffs with additional checks.",
+            "keywords": [
+                "dev",
+                "phpcs"
+            ],
+            "support": {
+                "issues": "https://github.com/slevomat/coding-standard/issues",
+                "source": "https://github.com/slevomat/coding-standard/tree/8.15.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/kukulich",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/slevomat/coding-standard",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2024-03-09T15:20:58+00:00"
+        },
+        {
+            "name": "squizlabs/php_codesniffer",
+            "version": "3.10.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHPCSStandards/PHP_CodeSniffer.git",
+                "reference": "62d32998e820bddc40f99f8251958aed187a5c9c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/62d32998e820bddc40f99f8251958aed187a5c9c",
+                "reference": "62d32998e820bddc40f99f8251958aed187a5c9c",
+                "shasum": ""
+            },
+            "require": {
+                "ext-simplexml": "*",
+                "ext-tokenizer": "*",
+                "ext-xmlwriter": "*",
+                "php": ">=5.4.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.3.4"
+            },
+            "bin": [
+                "bin/phpcbf",
+                "bin/phpcs"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.x-dev"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Greg Sherwood",
+                    "role": "Former lead"
+                },
+                {
+                    "name": "Juliette Reinders Folmer",
+                    "role": "Current lead"
+                },
+                {
+                    "name": "Contributors",
+                    "homepage": "https://github.com/PHPCSStandards/PHP_CodeSniffer/graphs/contributors"
+                }
+            ],
+            "description": "PHP_CodeSniffer tokenizes PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.",
+            "homepage": "https://github.com/PHPCSStandards/PHP_CodeSniffer",
+            "keywords": [
+                "phpcs",
+                "standards",
+                "static analysis"
+            ],
+            "support": {
+                "issues": "https://github.com/PHPCSStandards/PHP_CodeSniffer/issues",
+                "security": "https://github.com/PHPCSStandards/PHP_CodeSniffer/security/policy",
+                "source": "https://github.com/PHPCSStandards/PHP_CodeSniffer",
+                "wiki": "https://github.com/PHPCSStandards/PHP_CodeSniffer/wiki"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/PHPCSStandards",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/jrfnl",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/php_codesniffer",
+                    "type": "open_collective"
+                }
+            ],
+            "time": "2024-09-18T10:38:58+00:00"
+        },
         {
             "name": "symfony/yaml",
             "version": "v7.1.5",
@@ -9681,5 +9951,5 @@
         "php": "^8.2"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.6.0"
+    "plugin-api-version": "2.2.0"
 }
diff --git a/database/factories/UserFactory.php b/database/factories/UserFactory.php
index 584104c..63d6747 100644
--- a/database/factories/UserFactory.php
+++ b/database/factories/UserFactory.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Database\Factories;
 
 use Illuminate\Database\Eloquent\Factories\Factory;
diff --git a/database/migrations/2024_10_25_212704_create_images_table.php b/database/migrations/2024_10_25_212704_create_images_table.php
new file mode 100644
index 0000000..6d193fb
--- /dev/null
+++ b/database/migrations/2024_10_25_212704_create_images_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('images', function (Blueprint $table) {
+            $table->id();
+            $table->string('image_path');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('images');
+    }
+};
diff --git a/database/migrations/2024_10_25_213135_create_achievements_table.php b/database/migrations/2024_10_25_213135_create_achievements_table.php
new file mode 100644
index 0000000..c7bf293
--- /dev/null
+++ b/database/migrations/2024_10_25_213135_create_achievements_table.php
@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('achievements', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->text('description');
+            $table->foreignId('image_id')->nullable()->constrained('images')->onDelete('set null');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('achievements');
+    }
+};
diff --git a/database/migrations/0001_01_01_000000_create_users_table.php b/database/migrations/2024_10_25_213720_create_users_table.php
similarity index 80%
rename from database/migrations/0001_01_01_000000_create_users_table.php
rename to database/migrations/2024_10_25_213720_create_users_table.php
index 05fb5d9..a4c0404 100644
--- a/database/migrations/0001_01_01_000000_create_users_table.php
+++ b/database/migrations/2024_10_25_213720_create_users_table.php
@@ -14,9 +14,15 @@ public function up(): void
         Schema::create('users', function (Blueprint $table) {
             $table->id();
             $table->string('name');
+            $table->string('surname');
+            $table->string('patronymic');
             $table->string('email')->unique();
             $table->timestamp('email_verified_at')->nullable();
             $table->string('password');
+            $table->text('about')->nullable();
+            $table->foreignId('image_id')->nullable()->constrained('images')->onDelete('set null');
+            $table->boolean('is_admin')->default(false);
+            $table->boolean('is_confirmed')->default(false);
             $table->rememberToken();
             $table->timestamps();
         });
diff --git a/database/migrations/2024_10_25_214120_create_challenges_table.php b/database/migrations/2024_10_25_214120_create_challenges_table.php
new file mode 100644
index 0000000..64345c3
--- /dev/null
+++ b/database/migrations/2024_10_25_214120_create_challenges_table.php
@@ -0,0 +1,35 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('challenges', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->text('description');
+            $table->dateTime('start_date');
+            $table->dateTime('end_date');
+            $table->text('result')->nullable();
+            $table->timestamps();
+            $table->foreignId('achievement_id')->nullable()->constrained('achievements')->onDelete('set null');
+            $table->foreignId('image_id')->nullable()->constrained('images')->onDelete('set null');
+            $table->string('type')->default(false);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('challenges');
+    }
+};
diff --git a/database/migrations/2024_10_25_214308_create_users_challenges_table.php b/database/migrations/2024_10_25_214308_create_users_challenges_table.php
new file mode 100644
index 0000000..25f399f
--- /dev/null
+++ b/database/migrations/2024_10_25_214308_create_users_challenges_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('users_challenges', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('user_id')->constrained('users')->onDelete('cascade');
+            $table->foreignId('challenge_id')->constrained('challenges')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('users_challenges');
+    }
+};
diff --git a/database/migrations/2024_10_26_081158_create_users_achievements_table.php b/database/migrations/2024_10_26_081158_create_users_achievements_table.php
new file mode 100755
index 0000000..39b0c2b
--- /dev/null
+++ b/database/migrations/2024_10_26_081158_create_users_achievements_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('users_achievements', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('user_id')->constrained('users')->onDelete('cascade');
+            $table->foreignId('achievement_id')->constrained('achievements')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('users_achievements');
+    }
+};
diff --git a/database/migrations/2024_10_26_081419_create_teams_table.php b/database/migrations/2024_10_26_081419_create_teams_table.php
new file mode 100644
index 0000000..f536371
--- /dev/null
+++ b/database/migrations/2024_10_26_081419_create_teams_table.php
@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('teams', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->text('description');
+            $table->string('code');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('teams');
+    }
+};
diff --git a/database/migrations/2024_10_26_081833_create_users_teams_table.php b/database/migrations/2024_10_26_081833_create_users_teams_table.php
new file mode 100644
index 0000000..d8bd152
--- /dev/null
+++ b/database/migrations/2024_10_26_081833_create_users_teams_table.php
@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('users_teams', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('user_id')->constrained('users')->onDelete('cascade');
+            $table->foreignId('team_id')->constrained('teams')->onDelete('cascade');
+            $table->boolean('is_captain')->default(false);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('users_teams');
+    }
+};
diff --git a/database/migrations/2024_10_26_083853_create_teams_challenge_table.php b/database/migrations/2024_10_26_083853_create_teams_challenge_table.php
new file mode 100644
index 0000000..d188941
--- /dev/null
+++ b/database/migrations/2024_10_26_083853_create_teams_challenge_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('teams_challenge', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('team_id')->constrained('teams')->onDelete('cascade');
+            $table->foreignId('challenge_id')->constrained('challenges')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('teams_challenge');
+    }
+};
diff --git a/database/migrations/2024_10_26_084324_create_teams_achievements_table.php b/database/migrations/2024_10_26_084324_create_teams_achievements_table.php
new file mode 100644
index 0000000..49d8ee6
--- /dev/null
+++ b/database/migrations/2024_10_26_084324_create_teams_achievements_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('teams_achievements', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('team_id')->constrained('teams')->onDelete('cascade');
+            $table->foreignId('achievement_id')->constrained('achievements')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('teams_achievements');
+    }
+};
diff --git a/database/seeders/DatabaseSeeder.php b/database/seeders/DatabaseSeeder.php
index d01a0ef..392c776 100644
--- a/database/seeders/DatabaseSeeder.php
+++ b/database/seeders/DatabaseSeeder.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Database\Seeders;
 
 use App\Models\User;
diff --git a/phpcs.xml b/phpcs.xml
new file mode 100644
index 0000000..9dec104
--- /dev/null
+++ b/phpcs.xml
@@ -0,0 +1,78 @@
+<?xml version="1.0"?>
+<ruleset name="Coding standard">
+    <description>Coding standard</description>
+    <config name="installed_paths" value="../../slevomat/coding-standard"/>
+
+    <!-- display progress -->
+    <arg value="p"/>
+    <arg name="colors"/>
+
+    <!-- Paths to check -->
+    <file>database/factories</file>
+    <file>database/seeders</file>
+    <file>routes</file>
+    <exclude-pattern>*\.blade\.php</exclude-pattern>
+    <exclude-pattern>*\.js</exclude-pattern>
+    <exclude-pattern>*\.ts</exclude-pattern>
+    <exclude-pattern>*\.vue</exclude-pattern>
+    <exclude-pattern>config/*</exclude-pattern>
+    <exclude-pattern>resources/*</exclude-pattern>
+
+    <!-- inherit rules from: -->
+    <rule ref="PSR12"/>
+    <rule ref="PSR1.Files.SideEffects">
+    </rule>
+    <rule ref="Generic.Arrays.DisallowLongArraySyntax"/>
+    <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace">
+        <properties>
+            <property name="ignoreBlankLines" value="false"/>
+        </properties>
+    </rule>
+    <rule ref="Generic.Files.LineLength">
+        <properties>
+            <property name="lineLimit" value="240"/>
+            <property name="absoluteLineLimit" value="320"/>
+        </properties>
+    </rule>
+
+    <!-- Ban some functions -->
+    <rule ref="Generic.PHP.ForbiddenFunctions">
+        <properties>
+            <property name="forbiddenFunctions" type="array">
+                <element key="sizeof" value="count"/>
+                <element key="delete" value="unset"/>
+                <element key="print" value="echo"/>
+                <element key="is_null" value="null"/>
+                <element key="create_function" value="null"/>
+            </property>
+        </properties>
+    </rule>
+
+    <!-- Functional rules -->
+    <rule ref="SlevomatCodingStandard.TypeHints.DeclareStrictTypes">
+        <properties>
+            <property name="linesCountBeforeDeclare" value="1"/>
+            <property name="linesCountAfterDeclare" value="1"/>
+            <property name="spacesCountAroundEqualsSign" value="0"/>
+        </properties>
+    </rule>
+
+    <rule ref="SlevomatCodingStandard.TypeHints.UselessConstantTypeHint"/>
+    <rule ref="SlevomatCodingStandard.Exceptions.ReferenceThrowableOnly"/>
+    <rule ref="SlevomatCodingStandard.Classes.UselessLateStaticBinding"/>
+
+    <!-- Rules for detecting dead or useless code -->
+    <rule ref="SlevomatCodingStandard.Functions.UnusedInheritedVariablePassedToClosure"/>
+    <rule ref="SlevomatCodingStandard.Functions.UselessParameterDefaultValue"/>
+    <rule ref="SlevomatCodingStandard.Namespaces.UselessAlias"/>
+    <rule ref="SlevomatCodingStandard.PHP.UselessParentheses"/>
+    <rule ref="SlevomatCodingStandard.PHP.OptimizedFunctionsWithoutUnpacking"/>
+    <rule ref="SlevomatCodingStandard.Variables.DisallowSuperGlobalVariable"/>
+    <rule ref="SlevomatCodingStandard.Variables.DuplicateAssignmentToVariable"/>
+    <rule ref="SlevomatCodingStandard.Variables.UnusedVariable"/>
+    <rule ref="SlevomatCodingStandard.Variables.UselessVariable"/>
+    <rule ref="SlevomatCodingStandard.Exceptions.DeadCatch"/>
+
+    <!-- Rules for consistent code looks -->
+    <rule ref="SlevomatCodingStandard.Classes.ModernClassNameReference"/>
+</ruleset>
diff --git a/routes/console.php b/routes/console.php
index eff2ed2..12eea61 100644
--- a/routes/console.php
+++ b/routes/console.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Illuminate\Foundation\Inspiring;
 use Illuminate\Support\Facades\Artisan;
 
diff --git a/routes/web.php b/routes/web.php
index 86a06c5..7bceeaf 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Illuminate\Support\Facades\Route;
 
 Route::get('/', function () {
diff --git a/tests/Feature/ExampleTest.php b/tests/Feature/ExampleTest.php
index 8364a84..d26e6c9 100644
--- a/tests/Feature/ExampleTest.php
+++ b/tests/Feature/ExampleTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Tests\Feature;
 
 // use Illuminate\Foundation\Testing\RefreshDatabase;
diff --git a/tests/TestCase.php b/tests/TestCase.php
index fe1ffc2..6ac0072 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Tests;
 
 use Illuminate\Foundation\Testing\TestCase as BaseTestCase;
diff --git a/tests/Unit/ExampleTest.php b/tests/Unit/ExampleTest.php
index 5773b0c..262903d 100644
--- a/tests/Unit/ExampleTest.php
+++ b/tests/Unit/ExampleTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Tests\Unit;
 
 use PHPUnit\Framework\TestCase;