diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index e47f842..26b3f37 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -27,7 +27,8 @@
       "mcp__playwright__browser_navigate_back",
       "mcp__playwright__browser_run_code",
       "mcp__playwright__browser_wait_for",
-      "WebFetch(domain:www.bakertilly.nl)"
+      "WebFetch(domain:www.bakertilly.nl)",
+      "mcp__playwright__browser_type"
     ]
   }
 }
diff --git a/app/Http/Controllers/Auth/SocialiteController.php b/app/Http/Controllers/Auth/SocialiteController.php
index e79ee9f..6cce353 100644
--- a/app/Http/Controllers/Auth/SocialiteController.php
+++ b/app/Http/Controllers/Auth/SocialiteController.php
@@ -6,8 +6,10 @@
 
 use App\Http\Controllers\Controller;
 use App\Models\User;
+use App\Services\ActivityLogger;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Support\Arr;
 use Laravel\Socialite\Facades\Socialite;
 
 final class SocialiteController extends Controller
@@ -37,6 +39,8 @@ public function callback(): RedirectResponse
 
         auth()->login($user);
 
+        ActivityLogger::log('login', $user->id, metadata: ['email' => $user->email, 'firm_name' => Arr::get($azureUser, 'companyName')]);
+
         return redirect('/');
     }
 
@@ -45,6 +49,8 @@ public function callback(): RedirectResponse
      */
     public function logout(Request $request): RedirectResponse
     {
+        ActivityLogger::log('logout', auth()->id());
+
         auth()->logout();
 
         $request->session()->invalidate();
diff --git a/app/Http/Controllers/ScreeningController.php b/app/Http/Controllers/ScreeningController.php
index 7a8b9b4..deaa9da 100644
--- a/app/Http/Controllers/ScreeningController.php
+++ b/app/Http/Controllers/ScreeningController.php
@@ -7,8 +7,10 @@
 use App\Http\Requests\Screening\UpdateScreeningRequest;
 use App\Models\Category;
 use App\Models\Screening;
+use App\Services\ActivityLogger;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Support\Arr;
 use Inertia\Inertia;
 use Inertia\Response;
 
@@ -23,6 +25,8 @@ public function store(Request $request): RedirectResponse
             'user_id' => auth()->id(),
         ]);
 
+        ActivityLogger::log('screening_started', auth()->id());
+
         return redirect()->route('screening.show', $screening);
     }
 
@@ -44,8 +48,10 @@ public function update(UpdateScreeningRequest $request, Screening $screening): R
     {
         $validated = $request->validated();
 
-        $this->saveAnswers($screening, $validated['answers']);
-        $this->calculateAndUpdateScore($screening, $validated['answers']);
+        $this->saveAnswers($screening, Arr::get($validated, 'answers'));
+        $this->calculateAndUpdateScore($screening, Arr::get($validated, 'answers'));
+
+        ActivityLogger::log('screening_completed', auth()->id(), metadata: ['score' => $screening->score, 'passed' => $screening->passed]);
 
         return redirect()->route('screening.result', $screening);
     }
diff --git a/app/Http/Controllers/SessionController.php b/app/Http/Controllers/SessionController.php
index 319a761..9251c4f 100644
--- a/app/Http/Controllers/SessionController.php
+++ b/app/Http/Controllers/SessionController.php
@@ -6,9 +6,11 @@
 
 use App\Http\Requests\Session\UpdateSessionRequest;
 use App\Models\Session;
+use App\Services\ActivityLogger;
 use App\Services\ScoringService;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Support\Arr;
 use Inertia\Inertia;
 use Inertia\Response;
 
@@ -26,6 +28,8 @@ public function store(Request $request): RedirectResponse
             'status' => 'in_progress',
         ]);
 
+        ActivityLogger::log('session_started', auth()->id(), sessionId: $session->id, categoryId: (int) $request->input('category_id'), metadata: ['category_id' => $request->input('category_id')]);
+
         return redirect()->route('sessions.show', $session);
     }
 
@@ -42,6 +46,8 @@ public function show(Session $session): Response
             ->orderBy('sort_order')
             ->get();
 
+        ActivityLogger::log('step_viewed', auth()->id(), sessionId: $session->id, categoryId: $session->category_id, metadata: ['question_group_id' => $questionGroups->first()?->id]);
+
         $answers = $session->answers()->get()->keyBy('question_id');
 
         $scoringService = new ScoringService;
@@ -62,16 +68,16 @@ public function update(UpdateSessionRequest $request, Session $session): Redirec
     {
         $validated = $request->validated();
 
-        if (isset($validated['basic_info'])) {
-            $session->update(['basic_info' => $validated['basic_info']]);
+        if (Arr::has($validated, 'basic_info')) {
+            $session->update(['basic_info' => Arr::get($validated, 'basic_info')]);
         }
 
-        if (isset($validated['answers'])) {
-            $this->saveAnswers($session, $validated['answers']);
+        if (Arr::has($validated, 'answers')) {
+            $this->saveAnswers($session, Arr::get($validated, 'answers'));
         }
 
-        if (isset($validated['additional_comments'])) {
-            $session->update(['additional_comments' => $validated['additional_comments']]);
+        if (Arr::has($validated, 'additional_comments')) {
+            $session->update(['additional_comments' => Arr::get($validated, 'additional_comments')]);
         }
 
         if ($request->boolean('complete')) {
@@ -90,10 +96,15 @@ private function saveAnswers(Session $session, array $answers): void
             $session->answers()->updateOrCreate(
                 ['question_id' => (int) $questionId],
                 [
-                    'value' => $answer['value'] ?? null,
-                    'text_value' => $answer['text_value'] ?? null,
+                    'value' => Arr::get($answer, 'value'),
+                    'text_value' => Arr::get($answer, 'text_value'),
                 ]
             );
+
+            ActivityLogger::log('answer_saved', auth()->id(), sessionId: $session->id, categoryId: $session->category_id, metadata: [
+                'question_id' => (int) $questionId,
+                'value' => Arr::get($answer, 'value'),
+            ]);
         }
     }
 
@@ -113,6 +124,8 @@ private function completeSession(Session $session): RedirectResponse
             'completed_at' => now(),
         ]);
 
+        ActivityLogger::log('session_completed', auth()->id(), sessionId: $session->id, categoryId: $session->category_id, metadata: ['category_id' => $session->category_id, 'score' => $score, 'result' => $result]);
+
         return redirect()->route('sessions.result', $session);
     }
 
diff --git a/app/Nova/AnswerResource.php b/app/Nova/AnswerResource.php
new file mode 100644
index 0000000..6358067
--- /dev/null
+++ b/app/Nova/AnswerResource.php
@@ -0,0 +1,127 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Nova;
+
+use Laravel\Nova\Fields\BelongsTo;
+use Laravel\Nova\Fields\DateTime;
+use Laravel\Nova\Fields\ID;
+use Laravel\Nova\Fields\Text;
+use Laravel\Nova\Fields\Textarea;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Maatwebsite\LaravelNovaExcel\Actions\DownloadExcel;
+
+final class AnswerResource extends Resource
+{
+    /**
+     * The model the resource corresponds to.
+     *
+     * @var class-string<\App\Models\Answer>
+     */
+    public static string $model = \App\Models\Answer::class;
+
+    /**
+     * The single value that should be used to represent the resource when being displayed.
+     *
+     * @var string
+     */
+    public static $title = 'id';
+
+    /**
+     * The columns that should be searched.
+     *
+     * @var array
+     */
+    public static $search = ['id', 'value'];
+
+    /**
+     * Indicates if the resource should be displayed in the sidebar.
+     *
+     * @var bool
+     */
+    public static $displayInNavigation = false;
+
+    /**
+     * Get the fields displayed by the resource.
+     *
+     * @return array<int, \Laravel\Nova\Fields\Field|\Laravel\Nova\Panel|\Laravel\Nova\ResourceTool|\Illuminate\Http\Resources\MergeValue>
+     */
+    public function fields(NovaRequest $request): array
+    {
+        return [
+            ID::make()->sortable(),
+
+            BelongsTo::make('Session', 'session', SessionResource::class)
+                ->sortable()
+                ->filterable()
+                ->rules('required'),
+
+            BelongsTo::make('Question', 'question', QuestionResource::class)
+                ->sortable()
+                ->filterable()
+                ->rules('required'),
+
+            Text::make('Value')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('nullable', 'max:255'),
+
+            Textarea::make('Text Value')
+                ->rules('nullable'),
+
+            DateTime::make('Created At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            DateTime::make('Updated At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+        ];
+    }
+
+    /**
+     * Get the cards available for the request.
+     *
+     * @return array<int, \Laravel\Nova\Card>
+     */
+    public function cards(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the filters available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Filters\Filter>
+     */
+    public function filters(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the lenses available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Lenses\Lens>
+     */
+    public function lenses(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the actions available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Actions\Action>
+     */
+    public function actions(NovaRequest $request): array
+    {
+        return [
+            new DownloadExcel,
+        ];
+    }
+}
diff --git a/app/Nova/CategoryResource.php b/app/Nova/CategoryResource.php
new file mode 100644
index 0000000..f0733fc
--- /dev/null
+++ b/app/Nova/CategoryResource.php
@@ -0,0 +1,124 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Nova;
+
+use Laravel\Nova\Fields\DateTime;
+use Laravel\Nova\Fields\HasMany;
+use Laravel\Nova\Fields\ID;
+use Laravel\Nova\Fields\Number;
+use Laravel\Nova\Fields\Text;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Maatwebsite\LaravelNovaExcel\Actions\DownloadExcel;
+
+final class CategoryResource extends Resource
+{
+    /**
+     * The model the resource corresponds to.
+     *
+     * @var class-string<\App\Models\Category>
+     */
+    public static string $model = \App\Models\Category::class;
+
+    /**
+     * The single value that should be used to represent the resource when being displayed.
+     *
+     * @var string
+     */
+    public static $title = 'name';
+
+    /**
+     * The columns that should be searched.
+     *
+     * @var array
+     */
+    public static $search = ['id', 'name'];
+
+    /**
+     * Indicates if the resource should be displayed in the sidebar.
+     *
+     * @var bool
+     */
+    public static $displayInNavigation = false;
+
+    /**
+     * Get the fields displayed by the resource.
+     *
+     * @return array<int, \Laravel\Nova\Fields\Field|\Laravel\Nova\Panel|\Laravel\Nova\ResourceTool|\Illuminate\Http\Resources\MergeValue>
+     */
+    public function fields(NovaRequest $request): array
+    {
+        return [
+            ID::make()->sortable(),
+
+            Text::make('Name')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('required', 'max:255'),
+
+            Number::make('Sort Order')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('required', 'integer'),
+
+            DateTime::make('Created At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            DateTime::make('Updated At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            HasMany::make('Question Groups', 'questionGroups', QuestionGroupResource::class),
+
+            HasMany::make('Sessions', 'sessions', SessionResource::class),
+        ];
+    }
+
+    /**
+     * Get the cards available for the request.
+     *
+     * @return array<int, \Laravel\Nova\Card>
+     */
+    public function cards(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the filters available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Filters\Filter>
+     */
+    public function filters(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the lenses available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Lenses\Lens>
+     */
+    public function lenses(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the actions available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Actions\Action>
+     */
+    public function actions(NovaRequest $request): array
+    {
+        return [
+            new DownloadExcel,
+        ];
+    }
+}
diff --git a/app/Nova/LogResource.php b/app/Nova/LogResource.php
new file mode 100644
index 0000000..69954c3
--- /dev/null
+++ b/app/Nova/LogResource.php
@@ -0,0 +1,138 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Nova;
+
+use Laravel\Nova\Fields\BelongsTo;
+use Laravel\Nova\Fields\Code;
+use Laravel\Nova\Fields\DateTime;
+use Laravel\Nova\Fields\ID;
+use Laravel\Nova\Fields\Text;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Maatwebsite\LaravelNovaExcel\Actions\DownloadExcel;
+
+final class LogResource extends Resource
+{
+    /**
+     * The model the resource corresponds to.
+     *
+     * @var class-string<\App\Models\Log>
+     */
+    public static string $model = \App\Models\Log::class;
+
+    /**
+     * The single value that should be used to represent the resource when being displayed.
+     *
+     * @var string
+     */
+    public static $title = 'action';
+
+    /**
+     * The columns that should be searched.
+     *
+     * @var array
+     */
+    public static $search = ['id', 'action'];
+
+    /**
+     * Indicates if the resource should be displayed in the sidebar.
+     *
+     * @var bool
+     */
+    public static $displayInNavigation = true;
+
+    /**
+     * The group associated with the resource.
+     *
+     * @var string
+     */
+    public static $group = 'Analytics';
+
+    /**
+     * Get the fields displayed by the resource.
+     *
+     * @return array<int, \Laravel\Nova\Fields\Field|\Laravel\Nova\Panel|\Laravel\Nova\ResourceTool|\Illuminate\Http\Resources\MergeValue>
+     */
+    public function fields(NovaRequest $request): array
+    {
+        return [
+            ID::make()->sortable(),
+
+            BelongsTo::make('User', 'user', User::class)
+                ->nullable()
+                ->sortable()
+                ->filterable()
+                ->rules('nullable'),
+
+            BelongsTo::make('Session', 'session', SessionResource::class)
+                ->nullable()
+                ->sortable()
+                ->filterable()
+                ->rules('nullable'),
+
+            BelongsTo::make('Category', 'category', CategoryResource::class)
+                ->nullable()
+                ->sortable()
+                ->filterable()
+                ->rules('nullable'),
+
+            Text::make('Action')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('required', 'max:255'),
+
+            Code::make('Metadata')
+                ->json()
+                ->rules('nullable'),
+
+            DateTime::make('Created At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+        ];
+    }
+
+    /**
+     * Get the cards available for the request.
+     *
+     * @return array<int, \Laravel\Nova\Card>
+     */
+    public function cards(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the filters available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Filters\Filter>
+     */
+    public function filters(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the lenses available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Lenses\Lens>
+     */
+    public function lenses(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the actions available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Actions\Action>
+     */
+    public function actions(NovaRequest $request): array
+    {
+        return [
+            new DownloadExcel,
+        ];
+    }
+}
diff --git a/app/Nova/QuestionGroupResource.php b/app/Nova/QuestionGroupResource.php
new file mode 100644
index 0000000..895c115
--- /dev/null
+++ b/app/Nova/QuestionGroupResource.php
@@ -0,0 +1,135 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Nova;
+
+use Laravel\Nova\Fields\BelongsTo;
+use Laravel\Nova\Fields\DateTime;
+use Laravel\Nova\Fields\HasMany;
+use Laravel\Nova\Fields\ID;
+use Laravel\Nova\Fields\Number;
+use Laravel\Nova\Fields\Text;
+use Laravel\Nova\Fields\Textarea;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Maatwebsite\LaravelNovaExcel\Actions\DownloadExcel;
+
+final class QuestionGroupResource extends Resource
+{
+    /**
+     * The model the resource corresponds to.
+     *
+     * @var class-string<\App\Models\QuestionGroup>
+     */
+    public static string $model = \App\Models\QuestionGroup::class;
+
+    /**
+     * The single value that should be used to represent the resource when being displayed.
+     *
+     * @var string
+     */
+    public static $title = 'name';
+
+    /**
+     * The columns that should be searched.
+     *
+     * @var array
+     */
+    public static $search = ['id', 'name'];
+
+    /**
+     * Indicates if the resource should be displayed in the sidebar.
+     *
+     * @var bool
+     */
+    public static $displayInNavigation = false;
+
+    /**
+     * Get the fields displayed by the resource.
+     *
+     * @return array<int, \Laravel\Nova\Fields\Field|\Laravel\Nova\Panel|\Laravel\Nova\ResourceTool|\Illuminate\Http\Resources\MergeValue>
+     */
+    public function fields(NovaRequest $request): array
+    {
+        return [
+            ID::make()->sortable(),
+
+            BelongsTo::make('Category', 'category', CategoryResource::class)
+                ->sortable()
+                ->filterable()
+                ->rules('required'),
+
+            Text::make('Name')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('required', 'max:255'),
+
+            Number::make('Sort Order')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('required', 'integer'),
+
+            Textarea::make('Description')
+                ->rules('nullable'),
+
+            Textarea::make('Scoring Instructions')
+                ->rules('nullable'),
+
+            DateTime::make('Created At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            DateTime::make('Updated At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            HasMany::make('Questions', 'questions', QuestionResource::class),
+        ];
+    }
+
+    /**
+     * Get the cards available for the request.
+     *
+     * @return array<int, \Laravel\Nova\Card>
+     */
+    public function cards(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the filters available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Filters\Filter>
+     */
+    public function filters(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the lenses available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Lenses\Lens>
+     */
+    public function lenses(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the actions available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Actions\Action>
+     */
+    public function actions(NovaRequest $request): array
+    {
+        return [
+            new DownloadExcel,
+        ];
+    }
+}
diff --git a/app/Nova/QuestionResource.php b/app/Nova/QuestionResource.php
new file mode 100644
index 0000000..6780167
--- /dev/null
+++ b/app/Nova/QuestionResource.php
@@ -0,0 +1,158 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Nova;
+
+use Laravel\Nova\Fields\BelongsTo;
+use Laravel\Nova\Fields\Boolean;
+use Laravel\Nova\Fields\DateTime;
+use Laravel\Nova\Fields\ID;
+use Laravel\Nova\Fields\Number;
+use Laravel\Nova\Fields\Text;
+use Laravel\Nova\Fields\Textarea;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Maatwebsite\LaravelNovaExcel\Actions\DownloadExcel;
+
+final class QuestionResource extends Resource
+{
+    /**
+     * The model the resource corresponds to.
+     *
+     * @var class-string<\App\Models\Question>
+     */
+    public static string $model = \App\Models\Question::class;
+
+    /**
+     * The single value that should be used to represent the resource when being displayed.
+     *
+     * @var string
+     */
+    public static $title = 'text';
+
+    /**
+     * The columns that should be searched.
+     *
+     * @var array
+     */
+    public static $search = ['id', 'text'];
+
+    /**
+     * Indicates if the resource should be displayed in the sidebar.
+     *
+     * @var bool
+     */
+    public static $displayInNavigation = true;
+
+    /**
+     * The group associated with the resource.
+     *
+     * @var string
+     */
+    public static $group = 'Questionnaire';
+
+    /**
+     * Get the fields displayed by the resource.
+     *
+     * @return array<int, \Laravel\Nova\Fields\Field|\Laravel\Nova\Panel|\Laravel\Nova\ResourceTool|\Illuminate\Http\Resources\MergeValue>
+     */
+    public function fields(NovaRequest $request): array
+    {
+        return [
+            ID::make()->sortable(),
+
+            BelongsTo::make('Question Group', 'questionGroup', QuestionGroupResource::class)
+                ->sortable()
+                ->filterable()
+                ->readonly(),
+
+            Textarea::make('Text')
+                ->rules('required')
+                ->updateRules('required'),
+
+            Boolean::make('Has Yes')
+                ->sortable()
+                ->filterable()
+                ->readonly(),
+
+            Boolean::make('Has No')
+                ->sortable()
+                ->filterable()
+                ->readonly(),
+
+            Boolean::make('Has NA', 'has_na')
+                ->sortable()
+                ->filterable()
+                ->readonly(),
+
+            Text::make('Details')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->readonly(),
+
+            Number::make('Sort Order')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->readonly(),
+
+            Boolean::make('Is Scored')
+                ->sortable()
+                ->filterable()
+                ->readonly(),
+
+            DateTime::make('Created At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            DateTime::make('Updated At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+        ];
+    }
+
+    /**
+     * Get the cards available for the request.
+     *
+     * @return array<int, \Laravel\Nova\Card>
+     */
+    public function cards(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the filters available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Filters\Filter>
+     */
+    public function filters(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the lenses available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Lenses\Lens>
+     */
+    public function lenses(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the actions available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Actions\Action>
+     */
+    public function actions(NovaRequest $request): array
+    {
+        return [
+            new DownloadExcel,
+        ];
+    }
+}
diff --git a/app/Nova/ScreeningResource.php b/app/Nova/ScreeningResource.php
new file mode 100644
index 0000000..aea1584
--- /dev/null
+++ b/app/Nova/ScreeningResource.php
@@ -0,0 +1,134 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Nova;
+
+use Laravel\Nova\Fields\BelongsTo;
+use Laravel\Nova\Fields\Boolean;
+use Laravel\Nova\Fields\DateTime;
+use Laravel\Nova\Fields\HasMany;
+use Laravel\Nova\Fields\ID;
+use Laravel\Nova\Fields\Number;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Maatwebsite\LaravelNovaExcel\Actions\DownloadExcel;
+
+final class ScreeningResource extends Resource
+{
+    /**
+     * The model the resource corresponds to.
+     *
+     * @var class-string<\App\Models\Screening>
+     */
+    public static string $model = \App\Models\Screening::class;
+
+    /**
+     * The single value that should be used to represent the resource when being displayed.
+     *
+     * @var string
+     */
+    public static $title = 'id';
+
+    /**
+     * The columns that should be searched.
+     *
+     * @var array
+     */
+    public static $search = ['id'];
+
+    /**
+     * Indicates if the resource should be displayed in the sidebar.
+     *
+     * @var bool
+     */
+    public static $displayInNavigation = true;
+
+    /**
+     * The group associated with the resource.
+     *
+     * @var string
+     */
+    public static $group = 'Questionnaire';
+
+    /**
+     * Get the fields displayed by the resource.
+     *
+     * @return array<int, \Laravel\Nova\Fields\Field|\Laravel\Nova\Panel|\Laravel\Nova\ResourceTool|\Illuminate\Http\Resources\MergeValue>
+     */
+    public function fields(NovaRequest $request): array
+    {
+        return [
+            ID::make()->sortable(),
+
+            BelongsTo::make('User', 'user', User::class)
+                ->sortable()
+                ->filterable()
+                ->rules('required'),
+
+            Number::make('Score')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('required', 'integer'),
+
+            Boolean::make('Passed')
+                ->sortable()
+                ->filterable()
+                ->rules('required', 'boolean'),
+
+            DateTime::make('Created At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            DateTime::make('Updated At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            HasMany::make('Sessions', 'sessions', SessionResource::class),
+        ];
+    }
+
+    /**
+     * Get the cards available for the request.
+     *
+     * @return array<int, \Laravel\Nova\Card>
+     */
+    public function cards(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the filters available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Filters\Filter>
+     */
+    public function filters(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the lenses available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Lenses\Lens>
+     */
+    public function lenses(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the actions available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Actions\Action>
+     */
+    public function actions(NovaRequest $request): array
+    {
+        return [
+            new DownloadExcel,
+        ];
+    }
+}
diff --git a/app/Nova/SessionResource.php b/app/Nova/SessionResource.php
new file mode 100644
index 0000000..633545e
--- /dev/null
+++ b/app/Nova/SessionResource.php
@@ -0,0 +1,168 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Nova;
+
+use Laravel\Nova\Fields\BelongsTo;
+use Laravel\Nova\Fields\Code;
+use Laravel\Nova\Fields\DateTime;
+use Laravel\Nova\Fields\HasMany;
+use Laravel\Nova\Fields\ID;
+use Laravel\Nova\Fields\Number;
+use Laravel\Nova\Fields\Text;
+use Laravel\Nova\Fields\Textarea;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Maatwebsite\LaravelNovaExcel\Actions\DownloadExcel;
+
+final class SessionResource extends Resource
+{
+    /**
+     * The model the resource corresponds to.
+     *
+     * @var class-string<\App\Models\Session>
+     */
+    public static string $model = \App\Models\Session::class;
+
+    /**
+     * The single value that should be used to represent the resource when being displayed.
+     *
+     * @var string
+     */
+    public static $title = 'id';
+
+    /**
+     * The columns that should be searched.
+     *
+     * @var array
+     */
+    public static $search = ['id', 'status', 'result'];
+
+    /**
+     * Indicates if the resource should be displayed in the sidebar.
+     *
+     * @var bool
+     */
+    public static $displayInNavigation = true;
+
+    /**
+     * The group associated with the resource.
+     *
+     * @var string
+     */
+    public static $group = 'Questionnaire';
+
+    /**
+     * Get the fields displayed by the resource.
+     *
+     * @return array<int, \Laravel\Nova\Fields\Field|\Laravel\Nova\Panel|\Laravel\Nova\ResourceTool|\Illuminate\Http\Resources\MergeValue>
+     */
+    public function fields(NovaRequest $request): array
+    {
+        return [
+            ID::make()->sortable(),
+
+            BelongsTo::make('User', 'user', User::class)
+                ->sortable()
+                ->filterable()
+                ->rules('required'),
+
+            BelongsTo::make('Category', 'category', CategoryResource::class)
+                ->sortable()
+                ->filterable()
+                ->rules('required'),
+
+            BelongsTo::make('Screening', 'screening', ScreeningResource::class)
+                ->nullable()
+                ->sortable()
+                ->filterable()
+                ->rules('nullable'),
+
+            Text::make('Status')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('required', 'max:255'),
+
+            Number::make('Score')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('nullable', 'integer'),
+
+            Text::make('Result')
+                ->sortable()
+                ->filterable()
+                ->copyable()
+                ->rules('nullable', 'max:255'),
+
+            Code::make('Basic Info', 'basic_info')
+                ->json()
+                ->rules('nullable'),
+
+            Textarea::make('Additional Comments')
+                ->rules('nullable'),
+
+            DateTime::make('Completed At')
+                ->sortable()
+                ->filterable()
+                ->rules('nullable'),
+
+            DateTime::make('Created At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            DateTime::make('Updated At')
+                ->exceptOnForms()
+                ->sortable()
+                ->filterable(),
+
+            HasMany::make('Answers', 'answers', AnswerResource::class),
+
+            HasMany::make('Logs', 'logs', LogResource::class),
+        ];
+    }
+
+    /**
+     * Get the cards available for the request.
+     *
+     * @return array<int, \Laravel\Nova\Card>
+     */
+    public function cards(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the filters available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Filters\Filter>
+     */
+    public function filters(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the lenses available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Lenses\Lens>
+     */
+    public function lenses(NovaRequest $request): array
+    {
+        return [];
+    }
+
+    /**
+     * Get the actions available for the resource.
+     *
+     * @return array<int, \Laravel\Nova\Actions\Action>
+     */
+    public function actions(NovaRequest $request): array
+    {
+        return [
+            new DownloadExcel,
+        ];
+    }
+}
diff --git a/app/Nova/User.php b/app/Nova/User.php
index f52f8bd..aa0d224 100644
--- a/app/Nova/User.php
+++ b/app/Nova/User.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App\Nova;
 
 use Illuminate\Http\Request;
@@ -9,7 +11,7 @@
 use Laravel\Nova\Fields\Text;
 use Laravel\Nova\Http\Requests\NovaRequest;
 
-class User extends Resource
+final class User extends Resource
 {
     use PasswordValidationRules;
 
diff --git a/app/Policies/AnswerPolicy.php b/app/Policies/AnswerPolicy.php
new file mode 100644
index 0000000..ef34360
--- /dev/null
+++ b/app/Policies/AnswerPolicy.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Answer;
+use App\Models\User;
+
+final class AnswerPolicy
+{
+    /**
+     * Determine whether the user can view any answers.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the answer.
+     */
+    public function view(User $user, Answer $answer): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can create answers.
+     */
+    public function create(User $user): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can update the answer.
+     */
+    public function update(User $user, Answer $answer): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can delete the answer.
+     */
+    public function delete(User $user, Answer $answer): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can restore the answer.
+     */
+    public function restore(User $user, Answer $answer): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the answer.
+     */
+    public function forceDelete(User $user, Answer $answer): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Policies/CategoryPolicy.php b/app/Policies/CategoryPolicy.php
new file mode 100644
index 0000000..1cd74ae
--- /dev/null
+++ b/app/Policies/CategoryPolicy.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Category;
+use App\Models\User;
+
+final class CategoryPolicy
+{
+    /**
+     * Determine whether the user can view any categories.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the category.
+     */
+    public function view(User $user, Category $category): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can create categories.
+     */
+    public function create(User $user): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can update the category.
+     */
+    public function update(User $user, Category $category): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can delete the category.
+     */
+    public function delete(User $user, Category $category): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can restore the category.
+     */
+    public function restore(User $user, Category $category): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the category.
+     */
+    public function forceDelete(User $user, Category $category): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Policies/LogPolicy.php b/app/Policies/LogPolicy.php
new file mode 100644
index 0000000..4100950
--- /dev/null
+++ b/app/Policies/LogPolicy.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Log;
+use App\Models\User;
+
+final class LogPolicy
+{
+    /**
+     * Determine whether the user can view any logs.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the log.
+     */
+    public function view(User $user, Log $log): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can create logs.
+     */
+    public function create(User $user): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can update the log.
+     */
+    public function update(User $user, Log $log): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can delete the log.
+     */
+    public function delete(User $user, Log $log): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can restore the log.
+     */
+    public function restore(User $user, Log $log): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the log.
+     */
+    public function forceDelete(User $user, Log $log): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Policies/QuestionGroupPolicy.php b/app/Policies/QuestionGroupPolicy.php
new file mode 100644
index 0000000..6f1c0c3
--- /dev/null
+++ b/app/Policies/QuestionGroupPolicy.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\QuestionGroup;
+use App\Models\User;
+
+final class QuestionGroupPolicy
+{
+    /**
+     * Determine whether the user can view any question groups.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the question group.
+     */
+    public function view(User $user, QuestionGroup $questionGroup): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can create question groups.
+     */
+    public function create(User $user): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can update the question group.
+     */
+    public function update(User $user, QuestionGroup $questionGroup): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can delete the question group.
+     */
+    public function delete(User $user, QuestionGroup $questionGroup): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can restore the question group.
+     */
+    public function restore(User $user, QuestionGroup $questionGroup): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the question group.
+     */
+    public function forceDelete(User $user, QuestionGroup $questionGroup): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Policies/QuestionPolicy.php b/app/Policies/QuestionPolicy.php
new file mode 100644
index 0000000..179a054
--- /dev/null
+++ b/app/Policies/QuestionPolicy.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Question;
+use App\Models\User;
+
+final class QuestionPolicy
+{
+    /**
+     * Determine whether the user can view any questions.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the question.
+     */
+    public function view(User $user, Question $question): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can create questions.
+     */
+    public function create(User $user): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can update the question.
+     */
+    public function update(User $user, Question $question): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can delete the question.
+     */
+    public function delete(User $user, Question $question): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can restore the question.
+     */
+    public function restore(User $user, Question $question): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the question.
+     */
+    public function forceDelete(User $user, Question $question): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Policies/ScreeningPolicy.php b/app/Policies/ScreeningPolicy.php
new file mode 100644
index 0000000..e8d683c
--- /dev/null
+++ b/app/Policies/ScreeningPolicy.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Screening;
+use App\Models\User;
+
+final class ScreeningPolicy
+{
+    /**
+     * Determine whether the user can view any screenings.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the screening.
+     */
+    public function view(User $user, Screening $screening): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can create screenings.
+     */
+    public function create(User $user): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can update the screening.
+     */
+    public function update(User $user, Screening $screening): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can delete the screening.
+     */
+    public function delete(User $user, Screening $screening): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can restore the screening.
+     */
+    public function restore(User $user, Screening $screening): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the screening.
+     */
+    public function forceDelete(User $user, Screening $screening): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Policies/SessionPolicy.php b/app/Policies/SessionPolicy.php
new file mode 100644
index 0000000..5cfba74
--- /dev/null
+++ b/app/Policies/SessionPolicy.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Session;
+use App\Models\User;
+
+final class SessionPolicy
+{
+    /**
+     * Determine whether the user can view any sessions.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the session.
+     */
+    public function view(User $user, Session $session): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can create sessions.
+     */
+    public function create(User $user): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can update the session.
+     */
+    public function update(User $user, Session $session): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can delete the session.
+     */
+    public function delete(User $user, Session $session): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can restore the session.
+     */
+    public function restore(User $user, Session $session): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the session.
+     */
+    public function forceDelete(User $user, Session $session): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Services/ActivityLogger.php b/app/Services/ActivityLogger.php
new file mode 100644
index 0000000..7a14c72
--- /dev/null
+++ b/app/Services/ActivityLogger.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services;
+
+use App\Models\Log;
+
+final class ActivityLogger
+{
+    /**
+     * Log an activity to the database.
+     */
+    public static function log(
+        string $action,
+        ?int $userId = null,
+        ?int $sessionId = null,
+        ?int $categoryId = null,
+        ?array $metadata = null,
+    ): void {
+        Log::create([
+            'user_id' => $userId,
+            'session_id' => $sessionId,
+            'category_id' => $categoryId,
+            'action' => $action,
+            'metadata' => $metadata,
+        ]);
+    }
+}
diff --git a/composer.json b/composer.json
index 677efef..ac05227 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,8 @@
         "laravel/framework": "^12.0",
         "laravel/nova": "^5.0",
         "laravel/socialite": "^5.24",
-        "laravel/tinker": "^2.10.1"
+        "laravel/tinker": "^2.10.1",
+        "maatwebsite/laravel-nova-excel": "^1.3"
     },
     "require-dev": {
         "fakerphp/faker": "^1.23",
diff --git a/composer.lock b/composer.lock
index 8235452..db6b2ad 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": "846969b15fec689e62554bd1be9c57a8",
+    "content-hash": "c5908b1cf6b95103d6009afd8de09581",
     "packages": [
         {
             "name": "bacon/bacon-qr-code",
@@ -247,6 +247,85 @@
             ],
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+                {
+                    "name": "Mark Baker",
+                    "homepage": "https://markbakeruk.net"
+                },
+                {
+                    "name": "Franck Lefevre",
+                    "homepage": "https://rootslabs.net"
+                },
+                {
+                    "name": "Erik Tilt"
+                },
+                {
+                    "name": "Adrien Crivelli"
+                },
+                {
+                    "name": "Owen Leibman"
+                }
+            ],
+            "description": "PHPSpreadsheet - Read, Create and Write Spreadsheet documents in PHP - Spreadsheet engine",
+            "homepage": "https://github.com/PHPOffice/PhpSpreadsheet",
+            "keywords": [
+                "OpenXML",
+                "excel",
+                "gnumeric",
+                "ods",
+                "php",
+                "spreadsheet",
+                "xls",
+                "xlsx"
+            ],
+            "support": {
+                "issues": "https://github.com/PHPOffice/PhpSpreadsheet/issues",
+                "source": "https://github.com/PHPOffice/PhpSpreadsheet/tree/1.30.2"
+            },
+            "time": "2026-01-11T05:58:24+00:00"
+        },
         {
             "name": "phpoption/phpoption",
             "version": "1.9.5",
diff --git a/docs/implementation-plan.md b/docs/implementation-plan.md
index 4aa9c99..506ef4f 100644
--- a/docs/implementation-plan.md
+++ b/docs/implementation-plan.md
@@ -366,7 +366,7 @@ ## Step 10: Scoring and Result
 
 ## Step 11: Activity Logging
 
-[ ] **Add append-only activity logging for analytics.**
+[x] **Add append-only activity logging for analytics.**
 
 Create a logging service (or helper) that writes to the `logs` table. Integrate log writes into all relevant actions: `login`, `logout`, `screening_started`, `screening_completed`, `session_started`, `session_completed`, `session_abandoned`, `answer_saved`, `step_viewed`. Each log includes `user_id`, `session_id`, `category_id`, `action`, and `metadata` JSON as defined in `docs/technical-requirements.md` section 5 (logs table). The Log model should have no `updated_at` and should prevent updates/deletes.
 
@@ -403,7 +403,7 @@ ## Step 11: Activity Logging
 
 ## Step 12: Nova Resources and Policies
 
-[ ] **Create all Nova resources, policies, and Excel export actions.**
+[x] **Create all Nova resources, policies, and Excel export actions.**
 
 Create Nova resources: `CategoryResource`, `QuestionGroupResource`, `QuestionResource`, `ScreeningResource`, `SessionResource`, `AnswerResource`, `LogResource`. Create corresponding policies enforcing the permission matrix from `docs/technical-requirements.md` section 9 (most are read-only; only Question.text is editable). Apply field behaviors: all fields filterable, sortable, and copyable where applicable. Set menu visibility (only Question, Screening, Session, Log appear in sidebar). Install `maatwebsite/laravel-nova-excel` and add `DownloadExcel` action to every resource.