0.1.2

admin/edit_question.php

@@ -0,0 +1,99 @@
+<?php
+require_once '../db/config.php';
+require_once 'partials/header.php';
+
+$pdo = db();
+$message = '';
+$question_id = $_GET['id'] ?? null;
+
+if (!$question_id) {
+    header("Location: questions.php");
+    exit;
+}
+
+// Handle form submission for update
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && $_POST['action'] === 'update_question') {
+    try {
+        $pdo->beginTransaction();
+
+        // Update question text and score
+        $stmt = $pdo->prepare('UPDATE questions SET question_text = ?, score = ? WHERE id = ?');
+        $stmt->execute([$_POST['question_text'], $_POST['score'], $question_id]);
+
+        // Update answers
+        $correctAnswerIndex = $_POST['is_correct'];
+        foreach ($_POST['answers'] as $answer_id => $answerText) {
+            $isCorrect = ($answer_id == $_POST['correct_answer_id']); // This needs to be adjusted
+            
+            // Simplified logic: update text, and then separately update the correct flag
+             $stmt_update_text = $pdo->prepare('UPDATE answers SET answer_text = ? WHERE id = ? AND question_id = ?');
+             $stmt_update_text->execute([$answerText, $answer_id, $question_id]);
+        }
+        
+        // Set all to incorrect first
+        $stmt_reset = $pdo->prepare('UPDATE answers SET is_correct = 0 WHERE question_id = ?');
+        $stmt_reset->execute([$question_id]);
+
+        // Set the new correct answer
+        $stmt_set_correct = $pdo->prepare('UPDATE answers SET is_correct = 1 WHERE id = ? AND question_id = ?');
+        $stmt_set_correct->execute([$_POST['correct_answer_id'], $question_id]);
+
+        $pdo->commit();
+        $message = '<div class="alert alert-success">Domanda aggiornata con successo. <a href="questions.php">Torna alla lista</a>.</div>';
+
+    } catch (Exception $e) {
+        $pdo->rollBack();
+        $message = '<div class="alert alert-error">Errore durante l\'aggiornamento: ' . $e->getMessage() . '</div>';
+    }
+}
+
+
+// Fetch the question and its answers
+$stmt = $pdo->prepare('SELECT * FROM questions WHERE id = ?');
+$stmt->execute([$question_id]);
+$question = $stmt->fetch(PDO::FETCH_ASSOC);
+
+if (!$question) {
+    echo "<p>Domanda non trovata.</p>";
+    require_once 'partials/footer.php';
+    exit;
+}
+
+$stmt = $pdo->prepare('SELECT * FROM answers WHERE question_id = ? ORDER BY id ASC');
+$stmt->execute([$question_id]);
+$answers = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+?>
+
+<?php echo $message; ?>
+
+<div class="content-block">
+    <h2>Modifica Domanda</h2>
+    <form action="edit_question.php?id=<?php echo $question_id; ?>" method="POST">
+        <input type="hidden" name="action" value="update_question">
+        <div class="form-group">
+            <label for="question_text">Testo della Domanda</label>
+            <textarea name="question_text" id="question_text" rows="3" required><?php echo htmlspecialchars($question['question_text']); ?></textarea>
+        </div>
+        <div class="form-group">
+            <label for="score">Punteggio</label>
+            <input type="number" name="score" id="score" value="<?php echo htmlspecialchars($question['score']); ?>" required>
+        </div>
+        <div class="form-group">
+            <label>Risposte (seleziona quella corretta)</label>
+            <div class="answers-container">
+                <?php foreach ($answers as $answer):
+                ?>
+                <div class="answer-group">
+                     <input type="radio" name="correct_answer_id" value="<?php echo $answer['id']; ?>" <?php echo $answer['is_correct'] ? 'checked' : ''; ?>> 
+                     <input type="text" name="answers[<?php echo $answer['id']; ?>]" value="<?php echo htmlspecialchars($answer['answer_text']); ?>" required>
+                </div>
+                <?php endforeach; ?>
+            </div>
+        </div>
+        <button type="submit" class="btn">Aggiorna Domanda</button>
+        <a href="questions.php" style="margin-left: 15px;">Annulla</a>
+    </form>
+</div>
+
+<?php require_once 'partials/footer.php'; ?>

admin/index.php

@@ -0,0 +1,5 @@
+<?php
+// For now, we redirect to the questions management page.
+// In the future, this could be a dashboard.
+header("Location: questions.php");
+exit;

admin/partials/footer.php

@@ -0,0 +1,4 @@
+        </main>
+    </div>
+</body>
+</html>

admin/partials/header.php

@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html lang="it">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Backoffice Quiz</title>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Roboto:wght@400;700&display=swap" rel="stylesheet">
+    <link rel="stylesheet" href="style.css?v=<?php echo time(); ?>">
+</head>
+<body>
+    <div class="container">
+        <header class="main-header">
+            <h1>Backoffice</h1>
+            <nav>
+                <a href="questions.php">Gestione Domande</a>
+                <a href="results.php">Risultati</a>
+                <a href="../index.php" target="_blank">Vedi Sito Pubblico</a>
+            </nav>
+        </header>
+        <main>

admin/questions.php

@@ -0,0 +1,149 @@
+<?php
+require_once '../db/config.php';
+require_once 'partials/header.php';
+
+// In a real app, you'd have a session-based login check here.
+
+$pdo = db();
+$message = '';
+
+// Handle POST requests for CUD actions
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    if (isset($_POST['action'])) {
+        switch ($_POST['action']) {
+            case 'add_question':
+                try {
+                    $pdo->beginTransaction();
+
+                    // Insert question
+                    $stmt = $pdo->prepare('INSERT INTO questions (question_text, score) VALUES (?, ?)');
+                    $stmt->execute([$_POST['question_text'], $_POST['score']]);
+                    $questionId = $pdo->lastInsertId();
+
+                    // Insert answers
+                    $correctAnswerIndex = $_POST['is_correct'];
+                    foreach ($_POST['answers'] as $index => $answerText) {
+                        if (!empty($answerText)) {
+                            $isCorrect = ($index == $correctAnswerIndex);
+                            $stmt = $pdo->prepare('INSERT INTO answers (question_id, answer_text, is_correct) VALUES (?, ?, ?)');
+                            $stmt->execute([$questionId, $answerText, $isCorrect]);
+                        }
+                    }
+                    $pdo->commit();
+                    $message = '<div class="alert alert-success">Domanda aggiunta con successo.</div>';
+                } catch (Exception $e) {
+                    $pdo->rollBack();
+                    $message = '<div class="alert alert-error">Errore: ' . $e->getMessage() . '</div>';
+                }
+                break;
+
+            case 'delete_question':
+                 try {
+                    $pdo->beginTransaction();
+                    // Note: foreign keys with ON DELETE CASCADE would simplify this
+                    $stmt = $pdo->prepare('DELETE FROM answers WHERE question_id = ?');
+                    $stmt->execute([$_POST['question_id']]);
+                    
+                    $stmt = $pdo->prepare('DELETE FROM questions WHERE id = ?');
+                    $stmt->execute([$_POST['question_id']]);
+                    
+                    $pdo->commit();
+                    $message = '<div class="alert alert-success">Domanda eliminata con successo.</div>';
+                } catch (Exception $e) {
+                    $pdo->rollBack();
+                    $message = '<div class="alert alert-error">Errore: ' . $e->getMessage() . '</div>';
+                }
+                break;
+        }
+    }
+}
+
+// Fetch all questions with their answers
+$stmt = $pdo->query('SELECT * FROM questions ORDER BY id DESC');
+$questions = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+?>
+
+<?php echo $message; ?>
+
+<div class="content-block">
+    <h2>Aggiungi Nuova Domanda</h2>
+    <form action="questions.php" method="POST">
+        <input type="hidden" name="action" value="add_question">
+        <div class="form-group">
+            <label for="question_text">Testo della Domanda</label>
+            <textarea name="question_text" id="question_text" rows="3" required></textarea>
+        </div>
+        <div class="form-group">
+            <label for="score">Punteggio</label>
+            <input type="number" name="score" id="score" value="10" required>
+        </div>
+        <div class="form-group">
+            <label>Risposte (seleziona quella corretta)</label>
+            <div class="answers-container">
+                <?php for ($i = 0; $i < 4; $i++): ?>
+                <div class="answer-group">
+                     <input type="radio" name="is_correct" value="<?php echo $i; ?>" <?php echo $i === 0 ? 'checked' : ''; ?>>
+                     <input type="text" name="answers[]" placeholder="Testo della risposta <?php echo $i + 1; ?>" required>
+                </div>
+                <?php endfor; ?>
+            </div>
+        </div>
+        <button type="submit" class="btn">Aggiungi Domanda</button>
+    </form>
+</div>
+
+<div class="content-block">
+    <h2>Elenco Domande</h2>
+    <table>
+        <thead>
+            <tr>
+                <th>ID</th>
+                <th>Domanda</th>
+                <th>Punteggio</th>
+                <th>Azioni</th>
+            </tr>
+        </thead>
+        <tbody>
+            <?php foreach ($questions as $question): ?>
+            <tr>
+                <td><?php echo htmlspecialchars($question['id']); ?></td>
+                <td><?php echo htmlspecialchars($question['question_text']); ?></td>
+                <td><?php echo htmlspecialchars($question['score']); ?></td>
+                <td class="actions">
+                    <a href="edit_question.php?id=<?php echo $question['id']; ?>" class="btn-link">Modifica</a>
+                    <form action="questions.php" method="POST" style="display:inline;" onsubmit="return confirm('Sei sicuro di voler eliminare questa domanda?');">
+                        <input type="hidden" name="action" value="delete_question">
+                        <input type="hidden" name="question_id" value="<?php echo $question['id']; ?>">
+                        <button type="submit" class="btn-link">Elimina</button>
+                    </form>
+                </td>
+            </tr>
+            <?php endforeach; ?>
+        </tbody>
+    </table>
+</div>
+
+<style>
+.content-block {
+    background-color: #16213e;
+    padding: 20px;
+    border-radius: 8px;
+    margin-bottom: 30px;
+}
+.btn-link {
+    background: none;
+    border: none;
+    color: #e94560;
+    text-decoration: underline;
+    cursor: pointer;
+    padding: 0;
+    font-size: inherit;
+    font-family: inherit;
+}
+.btn-link:hover {
+    color: #c73c52;
+}
+</style>
+
+<?php require_once 'partials/footer.php'; ?>

admin/results.php

@@ -0,0 +1,192 @@
+<?php
+require_once '../db/config.php';
+require_once '../mail/MailService.php';
+require_once 'partials/header.php';
+
+$pdo = db();
+$message = '';
+$is_published = file_exists('../leaderboard_published.flag');
+
+// Handle POST actions
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action'])) {
+    switch ($_POST['action']) {
+        case 'delete_participant':
+            try {
+                $participant_id = $_POST['participant_id'];
+                $pdo->beginTransaction();
+                
+                $stmt = $pdo->prepare('DELETE FROM submissions WHERE participant_id = ?');
+                $stmt->execute([$participant_id]);
+
+                $stmt = $pdo->prepare('DELETE FROM participants WHERE id = ?');
+                $stmt->execute([$participant_id]);
+                
+                $pdo->commit();
+                $message = '<div class="alert alert-success">Partecipante eliminato con successo.</div>';
+            } catch (Exception $e) {
+                $pdo->rollBack();
+                $message = '<div class="alert alert-error">Errore: ' . $e->getMessage() . '</div>';
+            }
+            break;
+
+        case 'publish_leaderboard':
+            if (!$is_published) {
+                // Create flag file
+                file_put_contents('../leaderboard_published.flag', time());
+
+                // Send emails
+                try {
+                    $participants_emails_stmt = $pdo->query("SELECT email FROM participants");
+                    $emails = $participants_emails_stmt->fetchAll(PDO::FETCH_COLUMN);
+                    
+                    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? "https" : "http";
+                    $host = $_SERVER['HTTP_HOST'];
+                    $leaderboard_url = $protocol . "://" . $host . "/leaderboard.php";
+
+                    $subject = "La classifica del Quiz è online!";
+                    $body_html = "<h1>Ciao!</h1><p>La classifica finale del quiz è stata pubblicata. <a href='{$leaderboard_url}'>Clicca qui per vederla!</a></p><p>Grazie per aver partecipato.</p>";
+                    $body_text = "Ciao! La classifica finale del quiz è stata pubblicata. Vai su {$leaderboard_url} per vederla. Grazie per aver partecipato.";
+
+                    foreach ($emails as $email) {
+                        MailService::sendMail($email, $subject, $body_html, $body_text);
+                    }
+
+                    $message = '<div class="alert alert-success">Classifica pubblicata con successo! Email di notifica inviate a ' . count($emails) . ' partecipanti.</div>';
+                    $is_published = true; // Update status for the current page view
+
+                } catch (Exception $e) {
+                    $message = '<div class="alert alert-error">Errore durante l\'invio delle email: ' . $e->getMessage() . '</div>';
+                }
+            } else {
+                $message = '<div class="alert alert-error">La classifica è già stata pubblicata.</div>';
+            }
+            break;
+    }
+}
+    try {
+        $participant_id = $_POST['participant_id'];
+        $pdo->beginTransaction();
+        
+        // First delete submissions, then the participant
+        $stmt = $pdo->prepare('DELETE FROM submissions WHERE participant_id = ?');
+        $stmt->execute([$participant_id]);
+
+        $stmt = $pdo->prepare('DELETE FROM participants WHERE id = ?');
+        $stmt->execute([$participant_id]);
+        
+        $pdo->commit();
+        $message = '<div class="alert alert-success">Partecipante eliminato con successo.</div>';
+    } catch (Exception $e) {
+        $pdo->rollBack();
+        $message = '<div class="alert alert-error">Errore: ' . $e->getMessage() . '</div>';
+    }
+}
+
+
+// Fetch all participants and their submission details
+$participants_stmt = $pdo->query("SELECT * FROM participants ORDER BY created_at DESC");
+$participants = $participants_stmt->fetchAll(PDO::FETCH_ASSOC);
+
+// Function to calculate score for a participant
+function calculate_score($participant_id, $pdo) {
+    $score_stmt = $pdo->prepare(
+        'SELECT q.score, a.is_correct 
+         FROM submissions s
+         JOIN answers a ON s.answer_id = a.id
+         JOIN questions q ON s.question_id = q.id
+         WHERE s.participant_id = ?'
+    );
+    $score_stmt->execute([$participant_id]);
+    $results = $score_stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    $total_score = 0;
+    foreach ($results as $result) {
+        if ($result['is_correct']) {
+            $total_score += (int)$result['score'];
+        } else {
+            // As per requirements, wrong answer gives negative score
+            $total_score -= (int)$result['score'];
+        }
+    }
+    return $total_score;
+}
+
+?>
+
+<?php echo $message; ?>
+
+<div class="content-block">
+    <h2>Pubblica Classifica</h2>
+    <?php if ($is_published): ?>
+        <p>La classifica è stata pubblicata. <a href="../leaderboard.php" target="_blank">Vedi la classifica pubblica</a>.</p>
+    <?php else: ?>
+        <p>Una volta pubblicata la classifica, tutti i partecipanti riceveranno un'email con il link per visualizzarla. Questa azione è irreversibile.</p>
+        <form action="results.php" method="POST" onsubmit="return confirm('Sei sicuro di voler pubblicare la classifica e inviare le email a tutti i partecipanti?');">
+            <input type="hidden" name="action" value="publish_leaderboard">
+            <button type="submit" class="btn">Pubblica Classifica e Invia Email</button>
+        </form>
+    <?php endif; ?>
+</div>
+
+<div class="content-block">
+    <h2>Risultati e Partecipanti</h2>
+    <table>
+        <thead>
+            <tr>
+                <th>Nickname</th>
+                <th>Email</th>
+                <th>Data Invio</th>
+                <th>Punteggio</th>
+                <th>Azioni</th>
+            </tr>
+        </thead>
+        <tbody>
+            <?php if (empty($participants)): ?>
+                <tr>
+                    <td colspan="5">Nessun partecipante ha ancora completato il quiz.</td>
+                </tr>
+            <?php else: ?>
+                <?php foreach ($participants as $participant): ?>
+                <tr>
+                    <td><?php echo htmlspecialchars($participant['nickname']); ?></td>
+                    <td><?php echo htmlspecialchars($participant['email']); ?></td>
+                    <td><?php echo date('d/m/Y H:i', strtotime($participant['created_at'])); ?></td>
+                    <td><?php echo calculate_score($participant['id'], $pdo); ?></td>
+                    <td class="actions">
+                        <a href="view_submission.php?id=<?php echo $participant['id']; ?>" class="btn-link">Dettagli</a>
+                        <form action="results.php" method="POST" style="display:inline;" onsubmit="return confirm('Sei sicuro di voler eliminare questo partecipante e tutte le sue risposte?');">
+                            <input type="hidden" name="action" value="delete_participant">
+                            <input type="hidden" name="participant_id" value="<?php echo $participant['id']; ?>">
+                            <button type="submit" class="btn-link">Elimina</button>
+                        </form>
+                    </td>
+                </tr>
+                <?php endforeach; ?>
+            <?php endif; ?>
+        </tbody>
+    </table>
+</div>
+
+<style>
+.content-block {
+    background-color: #16213e;
+    padding: 20px;
+    border-radius: 8px;
+    margin-bottom: 30px;
+}
+.btn-link {
+    background: none;
+    border: none;
+    color: #e94560;
+    text-decoration: underline;
+    cursor: pointer;
+    padding: 0;
+    font-size: inherit;
+    font-family: inherit;
+}
+.btn-link:hover {
+    color: #c73c52;
+}
+</style>
+
+<?php require_once 'partials/footer.php'; ?>

admin/style.css

@@ -0,0 +1,138 @@
+
+body {
+    background-color: #1a1a2e;
+    color: #ffffff;
+    font-family: 'Roboto', sans-serif;
+    margin: 0;
+    padding: 20px;
+}
+
+.container {
+    max-width: 1200px;
+    margin: 0 auto;
+}
+
+.main-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 20px 0;
+    border-bottom: 1px solid #0f3460;
+    margin-bottom: 20px;
+}
+
+.main-header h1 {
+    font-family: 'Orbitron', sans-serif;
+    color: #e94560;
+    margin: 0;
+}
+
+.main-header nav a {
+    color: #ffffff;
+    text-decoration: none;
+    margin-left: 20px;
+    font-weight: bold;
+    transition: color 0.3s;
+}
+
+.main-header nav a:hover {
+    color: #e94560;
+}
+
+h2 {
+    font-family: 'Orbitron', sans-serif;
+    color: #e94560;
+    border-bottom: 2px solid #0f3460;
+    padding-bottom: 10px;
+}
+
+table {
+    width: 100%;
+    border-collapse: collapse;
+    margin-top: 20px;
+}
+
+th, td {
+    padding: 12px;
+    text-align: left;
+    border-bottom: 1px solid #0f3460;
+}
+
+th {
+    background-color: #16213e;
+    font-weight: bold;
+}
+
+tr:hover {
+    background-color: #1f2a4a;
+}
+
+.actions a {
+    color: #e94560;
+    text-decoration: none;
+    margin-right: 10px;
+}
+
+.btn {
+    background-color: #e94560;
+    color: #ffffff;
+    padding: 10px 15px;
+    border: none;
+    border-radius: 5px;
+    text-decoration: none;
+    font-weight: bold;
+    cursor: pointer;
+    transition: background-color 0.3s;
+}
+
+.btn:hover {
+    background-color: #c73c52;
+}
+
+.form-group {
+    margin-bottom: 15px;
+}
+
+.form-group label {
+    display: block;
+    margin-bottom: 5px;
+    font-weight: bold;
+}
+
+.form-group input[type="text"],
+.form-group textarea {
+    width: 100%;
+    padding: 10px;
+    background-color: #16213e;
+    border: 1px solid #0f3460;
+    color: #ffffff;
+    border-radius: 5px;
+}
+
+.form-group .answers-container .answer-group {
+    margin-bottom: 10px;
+    display: flex;
+    align-items: center;
+}
+.form-group .answers-container .answer-group input[type='radio'] {
+    margin-right: 10px;
+}
+.form-group .answers-container .answer-group input[type='text'] {
+    flex-grow: 1;
+}
+
+.alert {
+    padding: 15px;
+    margin-bottom: 20px;
+    border-radius: 5px;
+}
+
+.alert-success {
+    background-color: #28a745;
+    color: white;
+}
+
+.alert-error {
+    background-color: #dc3545;
+    color: white;
+}

admin/view_submission.php

@@ -0,0 +1,95 @@
+<?php
+require_once '../db/config.php';
+require_once 'partials/header.php';
+
+$pdo = db();
+$participant_id = $_GET['id'] ?? null;
+
+if (!$participant_id) {
+    header("Location: results.php");
+    exit;
+}
+
+// Fetch participant details
+$stmt = $pdo->prepare('SELECT * FROM participants WHERE id = ?');
+$stmt->execute([$participant_id]);
+$participant = $stmt->fetch(PDO::FETCH_ASSOC);
+
+if (!$participant) {
+    echo "<p>Partecipante non trovato.</p>";
+    require_once 'partials/footer.php';
+    exit;
+}
+
+// Fetch submission details
+$query = <<<SQL
+SELECT 
+    q.question_text, 
+    q.score,
+    their_a.answer_text as chosen_answer,
+    their_a.is_correct as was_correct,
+    correct_a.answer_text as correct_answer
+FROM submissions s
+JOIN questions q ON s.question_id = q.id
+JOIN answers their_a ON s.answer_id = their_a.id
+LEFT JOIN answers correct_a ON q.id = correct_a.question_id AND correct_a.is_correct = 1
+WHERE s.participant_id = ?
+ORDER BY q.id ASC
+SQL;
+
+$stmt = $pdo->prepare($query);
+$stmt->execute([$participant_id]);
+$submission_details = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+
+?>
+
+<div class="content-block">
+    <h2>Dettaglio Risposte - <?php echo htmlspecialchars($participant['nickname']); ?></h2>
+    <p><strong>Email:</strong> <?php echo htmlspecialchars($participant['email']); ?></p>
+    <a href="results.php">&laquo; Torna alla lista dei risultati</a>
+
+    <div class="submission-list">
+        <?php foreach ($submission_details as $detail): ?>
+            <div class="submission-item <?php echo $detail['was_correct'] ? 'correct' : 'incorrect'; ?>">
+                <h4><?php echo htmlspecialchars($detail['question_text']); ?></h4>
+                <p>
+                    <strong>Risposta data:</strong> <?php echo htmlspecialchars($detail['chosen_answer']); ?>
+                    (Punti: <?php echo $detail['was_correct'] ? '+' : '-'; echo htmlspecialchars($detail['score']); ?>)
+                </p>
+                <?php if (!$detail['was_correct']): ?>
+                    <p><strong>Risposta corretta:</strong> <?php echo htmlspecialchars($detail['correct_answer']); ?></p>
+                <?php endif; ?>
+            </div>
+        <?php endforeach; ?>
+    </div>
+</div>
+
+<style>
+.content-block {
+    background-color: #16213e;
+    padding: 20px;
+    border-radius: 8px;
+}
+.submission-list {
+    margin-top: 20px;
+}
+.submission-item {
+    border-left: 5px solid;
+    padding: 15px;
+    margin-bottom: 15px;
+    background-color: #1f2a4a;
+}
+.submission-item.correct {
+    border-left-color: #28a745;
+}
+.submission-item.incorrect {
+    border-left-color: #dc3545;
+}
+.submission-item h4 {
+    margin: 0 0 10px 0;
+}
+</style>
+
+<?php require_once 'partials/footer.php'; ?>
+

db/seed.php

@@ -0,0 +1,97 @@
+<?php
+require_once __DIR__ . '/config.php';
+
+try {
+    $pdo = db();
+    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+
+    // Clean up tables before seeding to make the script idempotent
+    $pdo->exec('SET FOREIGN_KEY_CHECKS=0;');
+    $pdo->exec('TRUNCATE TABLE submissions;');
+    $pdo->exec('TRUNCATE TABLE answers;');
+    $pdo->exec('TRUNCATE TABLE questions;');
+    $pdo->exec('TRUNCATE TABLE participants;');
+    $pdo->exec('SET FOREIGN_KEY_CHECKS=1;');
+
+    $quiz_data = [
+        [
+            'question' => "Quale sarà l'auto vincitrice del 'Best of Show' al Concorso d'Eleganza di Villa d'Este 2025?",
+            'points' => 5,
+            'answers' => [
+                ['text' => "Un'auto d'epoca degli anni '30", 'correct' => true],
+                ['text' => "Una supercar moderna", 'correct' => false],
+                ['text' => "Un prototipo di design", 'correct' => false],
+            ]
+        ],
+        [
+            'question' => "Chi vincerà il premio 'FIVA World Motoring Heritage Year'?",
+            'points' => 5,
+            'answers' => [
+                ['text' => "Un club di auto storiche italiano", 'correct' => false],
+                ['text' => "Un museo dell'automobile americano", 'correct' => true],
+                ['text' => "Una collezione privata giapponese", 'correct' => false],
+            ]
+        ],
+        [
+            'question' => "Quale brand presenterà il prototipo più audace?",
+            'points' => 5,
+            'answers' => [
+                ['text' => "Un marchio di lusso europeo", 'correct' => false],
+                ['text' => "Una startup di veicoli elettrici", 'correct' => true],
+                ['text' => "Un produttore di hypercar di nicchia", 'correct' => false],
+            ]
+        ],
+        [
+            'question' => "DOMANDA JOLLY: Quale sarà il valore di aggiudicazione più alto all'asta RM Sotheby's di Villa Erba?",
+            'points' => 45,
+            'answers' => [
+                ['text' => "Tra 5 e 10 milioni di euro", 'correct' => true],
+                ['text' => "Sotto i 5 milioni di euro", 'correct' => false],
+                ['text' => "Oltre 10 milioni di euro", 'correct' => false],
+            ]
+        ],
+        [
+            'question' => "ITALIAN TGA: Quale auto italiana vincerà il premio nella sua categoria?",
+            'points' => 30,
+            'answers' => [
+                ['text' => "Una Ferrari classica", 'correct' => false],
+                ['text' => "Una Lamborghini rara", 'correct' => false],
+                ['text' => "Un'Alfa Romeo da competizione", 'correct' => true],
+            ]
+        ],
+    ];
+    
+    $pdo->beginTransaction();
+
+    foreach ($quiz_data as $item) {
+        // Insert question
+        $sql_question = "INSERT INTO questions (question_text, points) VALUES (:question_text, :points)";
+        $stmt_question = $pdo->prepare($sql_question);
+        $stmt_question->execute([
+            ':question_text' => $item['question'],
+            ':points' => $item['points']
+        ]);
+        $question_id = $pdo->lastInsertId();
+
+        // Insert answers
+        foreach ($item['answers'] as $answer) {
+            $sql_answer = "INSERT INTO answers (question_id, answer_text, is_correct) VALUES (:question_id, :answer_text, :is_correct)";
+            $stmt_answer = $pdo->prepare($sql_answer);
+            $stmt_answer->execute([
+                ':question_id' => $question_id,
+                ':answer_text' => $answer['text'],
+                ':is_correct' => (int)$answer['correct'] // Explicitly cast boolean to integer
+            ]);
+        }
+    }
+
+    $pdo->commit();
+
+    echo "Database popolato con successo con le domande e le risposte del quiz." . PHP_EOL;
+
+} catch (PDOException $e) {
+    if ($pdo->inTransaction()) {
+        $pdo->rollBack();
+    }
+    die("Errore durante il popolamento del database: " . $e->getMessage());
+}

db/setup.php

@@ -0,0 +1,51 @@
+<?php
+require_once __DIR__ . '/config.php';
+
+try {
+    $pdo = db();
+    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+
+    // SQL statements for creating tables
+    $sql = <<<SQL
+        CREATE TABLE IF NOT EXISTS `participants` (
+          `id` INT AUTO_INCREMENT PRIMARY KEY,
+          `email` VARCHAR(255) NOT NULL UNIQUE,
+          `nickname` VARCHAR(255) NOT NULL,
+          `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+        CREATE TABLE IF NOT EXISTS `questions` (
+          `id` INT AUTO_INCREMENT PRIMARY KEY,
+          `question_text` TEXT NOT NULL,
+          `score` INT NOT NULL DEFAULT 10,
+          `image_url` VARCHAR(255) NULL,
+          `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+        CREATE TABLE IF NOT EXISTS `answers` (
+          `id` INT AUTO_INCREMENT PRIMARY KEY,
+          `question_id` INT NOT NULL,
+          `answer_text` VARCHAR(255) NOT NULL,
+          `is_correct` BOOLEAN NOT NULL DEFAULT FALSE,
+          `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+          FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE CASCADE
+        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+        CREATE TABLE IF NOT EXISTS `submissions` (
+          `id` INT AUTO_INCREMENT PRIMARY KEY,
+          `participant_id` INT NOT NULL,
+          `question_id` INT NOT NULL,
+          `answer_id` INT NOT NULL,
+          `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+          FOREIGN KEY (`participant_id`) REFERENCES `participants`(`id`) ON DELETE CASCADE,
+          FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE CASCADE,
+          FOREIGN KEY (`answer_id`) REFERENCES `answers`(`id`) ON DELETE CASCADE
+        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+    SQL;
+
+    $pdo->exec($sql);
+    echo "Tabelle create con successo (o già esistenti)." . PHP_EOL;
+
+} catch (PDOException $e) {
+    die("Errore nella creazione delle tabelle: " . $e->getMessage());
+}

index.php

@@ -1,150 +1,205 @@
 <?php
 declare(strict_types=1);
-@ini_set('display_errors', '1');
-@error_reporting(E_ALL);
-@date_default_timezone_set('UTC');
+ini_set('display_errors', '1');
+error_reporting(E_ALL);
+date_default_timezone_set('Europe/Rome');
+
+session_start();
+
+require_once __DIR__ . '/db/config.php';
+require_once __DIR__ . '/mail/MailService.php';
+
+$pdo = db();
+$message = '';
+$error = '';
+$submitted_successfully = false;
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);
+    $nickname = filter_input(INPUT_POST, 'nickname', FILTER_SANITIZE_STRING);
+    $answers = $_POST['answers'] ?? [];
+
+    if (!$email || !$nickname || empty($answers)) {
+        $error = 'Per favore, compila tutti i campi e rispondi a tutte le domande.';
+    } else {
+        try {
+            // Check for duplicate email
+            $stmt = $pdo->prepare("SELECT id FROM participants WHERE email = ?");
+            $stmt->execute([$email]);
+            if ($stmt->fetch()) {
+                $error = 'Questo indirizzo email ha già partecipato. È consentito un solo invio per email.';
+            } else {
+                $pdo->beginTransaction();
+
+                // Insert participant
+                $stmt = $pdo->prepare("INSERT INTO participants (email, nickname) VALUES (?, ?)");
+                $stmt->execute([$email, $nickname]);
+                $participant_id = $pdo->lastInsertId();
+
+                // Insert submissions
+                $stmt_submission = $pdo->prepare("INSERT INTO submissions (participant_id, question_id, answer_id) VALUES (?, ?, ?)");
+                foreach ($answers as $question_id => $answer_id) {
+                    $stmt_submission->execute([$participant_id, $question_id, $answer_id]);
+                }
+
+                $pdo->commit();
+
+                // Send confirmation email
+                $subject = 'Grazie per aver partecipato al nostro Quiz!';
+                $body = "Ciao {$nickname},<br><br>Grazie per aver inviato le tue risposte. I risultati saranno pubblicati al termine del concorso.<br><br>In bocca al lupo!";
+                MailService::sendMail($email, $subject, $body, strip_tags($body));
+                
+                $message = 'Grazie per aver partecipato! Hai inviato con successo le tue risposte e riceverai una mail di conferma a breve.';
+                $submitted_successfully = true;
+            }
+        } catch (Exception $e) {
+            if ($pdo->inTransaction()) {
+                $pdo->rollBack();
+            }
+            $error = "Si è verificato un errore durante l'invio. Riprova. Dettagli: " . $e->getMessage();
+        }
+    }
+}
+
+// Fetch questions and answers for the form
+$questions = [];
+if (!$submitted_successfully) {
+    try {
+        $stmt = $pdo->query("SELECT id, question_text, points FROM questions ORDER BY id");
+        while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
+            $question_id = $row['id'];
+            $row['answers'] = [];
+            $stmt_answers = $pdo->prepare("SELECT id, answer_text FROM answers WHERE question_id = ? ORDER BY id");
+            $stmt_answers->execute([$question_id]);
+            $row['answers'] = $stmt_answers->fetchAll(PDO::FETCH_ASSOC);
+            $questions[] = $row;
+        }
+    } catch (Exception $e) {
+        $error = "Impossibile caricare le domande del quiz. Dettagli: " . $e->getMessage();
+    }
+}
 
-$phpVersion = PHP_VERSION;
-$now = date('Y-m-d H:i:s');
 ?>
-<!doctype html>
-<html lang="en">
+<!DOCTYPE html>
+<html lang="it">
 <head>
-  <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>New Style</title>
-<?php
-// Read project preview data from environment
-$projectDescription = $_SERVER['PROJECT_DESCRIPTION'] ?? '';
-$projectImageUrl = $_SERVER['PROJECT_IMAGE_URL'] ?? '';
-?>
-<?php if ($projectDescription): ?>
-  <!-- Meta description -->
-  <meta name="description" content='<?= htmlspecialchars($projectDescription) ?>' />
-  <!-- Open Graph meta tags -->
-  <meta property="og:description" content="<?= htmlspecialchars($projectDescription) ?>" />
-  <!-- Twitter meta tags -->
-  <meta property="twitter:description" content="<?= htmlspecialchars($projectDescription) ?>" />
-<?php endif; ?>
-<?php if ($projectImageUrl): ?>
-  <!-- Open Graph image -->
-  <meta property="og:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
-  <!-- Twitter image -->
-  <meta property="twitter:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
-<?php endif; ?>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Quiz Eleganza Motoristica</title>
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
+    <link href="https://fonts.googleapis.com/css2?family=Orbitron:wght@700&family=Roboto:wght@400;700&display=swap" rel="stylesheet">
     <style>
         :root {
-      --bg-color-start: #6a11cb;
-      --bg-color-end: #2575fc;
+            --bg-color: #1a1a2e;
+            --surface-color: #16213e;
+            --primary-accent: #e94560;
+            --secondary-accent: #0f3460;
             --text-color: #ffffff;
-      --card-bg-color: rgba(255, 255, 255, 0.01);
-      --card-border-color: rgba(255, 255, 255, 0.1);
+            --text-muted: #a0a0a0;
+            --success-color: #50fa7b;
+            --error-color: #ff5555;
         }
         body {
             margin: 0;
-      font-family: 'Inter', sans-serif;
-      background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
+            font-family: 'Roboto', sans-serif;
+            background-color: var(--bg-color);
             color: var(--text-color);
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      min-height: 100vh;
-      text-align: center;
-      overflow: hidden;
-      position: relative;
-    }
-    body::before {
-      content: '';
-      position: absolute;
-      top: 0;
-      left: 0;
-      width: 100%;
-      height: 100%;
-      background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
-      animation: bg-pan 20s linear infinite;
-      z-index: -1;
-    }
-    @keyframes bg-pan {
-      0% { background-position: 0% 0%; }
-      100% { background-position: 100% 100%; }
-    }
-    main {
             padding: 2rem;
         }
-    .card {
-      background: var(--card-bg-color);
-      border: 1px solid var(--card-border-color);
-      border-radius: 16px;
-      padding: 2rem;
-      backdrop-filter: blur(20px);
-      -webkit-backdrop-filter: blur(20px);
-      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
-    }
-    .loader {
-      margin: 1.25rem auto 1.25rem;
-      width: 48px;
-      height: 48px;
-      border: 3px solid rgba(255, 255, 255, 0.25);
-      border-top-color: #fff;
-      border-radius: 50%;
-      animation: spin 1s linear infinite;
-    }
-    @keyframes spin {
-      from { transform: rotate(0deg); }
-      to   { transform: rotate(360deg); }
-    }
-    .hint {
-      opacity: 0.9;
-    }
-    .sr-only {
-      position: absolute;
-      width: 1px; height: 1px;
-      padding: 0; margin: -1px;
-      overflow: hidden;
-      clip: rect(0, 0, 0, 0);
-      white-space: nowrap; border: 0;
-    }
+        .container { max-width: 800px; margin: 0 auto; }
         h1 {
-      font-size: 3rem;
-      font-weight: 700;
-      margin: 0 0 1rem;
-      letter-spacing: -1px;
+            font-family: 'Orbitron', sans-serif;
+            color: var(--primary-accent);
+            text-align: center;
+            text-shadow: 0 0 10px var(--primary-accent);
         }
-    p {
-      margin: 0.5rem 0;
-      font-size: 1.1rem;
+        .header-image { width: 100%; height: 200px; background-color: var(--secondary-accent); margin-bottom: 2rem; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-style: italic; color: var(--text-muted); }
+        .question-card {
+            background-color: var(--surface-color);
+            border: 1px solid var(--secondary-accent);
+            border-radius: 12px;
+            padding: 1.5rem;
+            margin-bottom: 1.5rem;
+            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
+            transition: transform 0.2s;
         }
-    code {
-      background: rgba(0,0,0,0.2);
-      padding: 2px 6px;
-      border-radius: 4px;
-      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+        .question-card:hover { transform: translateY(-5px); }
+        .question-title { font-weight: 700; font-size: 1.2rem; margin-bottom: 1rem; }
+        .answer-option { margin-bottom: 0.5rem; }
+        .answer-option label { display: flex; align-items: center; cursor: pointer; padding: 0.5rem; border-radius: 6px; transition: background-color 0.2s; }
+        .answer-option input { margin-right: 0.8rem; }
+        .answer-option label:hover { background-color: var(--secondary-accent); }
+        .form-group { margin-bottom: 1.5rem; }
+        .form-group label { display: block; margin-bottom: 0.5rem; }
+        .form-group input[type='email'], .form-group input[type='text'] { 
+            width: 100%; 
+            padding: 0.8rem; 
+            border: 1px solid var(--secondary-accent); 
+            background-color: var(--surface-color); 
+            color: var(--text-color); 
+            border-radius: 6px; 
         }
-    footer {
-      position: absolute;
-      bottom: 1rem;
-      font-size: 0.8rem;
-      opacity: 0.7;
+        .btn-submit { 
+            display: block; width: 100%; padding: 1rem; font-size: 1.2rem; 
+            font-family: 'Orbitron', sans-serif; 
+            background-color: var(--primary-accent); 
+            color: var(--text-color); 
+            border: none; border-radius: 8px; cursor: pointer; 
+            transition: background-color 0.3s, box-shadow 0.3s; 
+            text-shadow: 0 0 5px rgba(255,255,255,0.5);
         }
+        .btn-submit:hover { background-color: #ff5e78; box-shadow: 0 0 15px var(--primary-accent); }
+        .message, .error { padding: 1rem; border-radius: 8px; text-align: center; margin: 1.5rem 0; }
+        .message { background-color: var(--success-color); color: var(--bg-color); }
+        .error { background-color: var(--error-color); color: var(--text-color); }
     </style>
 </head>
 <body>
-  <main>
-    <div class="card">
-      <h1>Analyzing your requirements and generating your website…</h1>
-      <div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
-        <span class="sr-only">Loading…</span>
+    <div class="container">
+        <div class="header-image">Spazio per logo e info</div>
+        <h1>Quiz The Unheard Edition 2025</h1>
+
+        <?php if ($message): ?>
+            <div class="message"><?= htmlspecialchars($message) ?></div>
+        <?php endif; ?>
+        <?php if ($error): ?>
+            <div class="error"><?= htmlspecialchars($error) ?></div>
+        <?php endif; ?>
+
+        <?php if (!$submitted_successfully): ?>
+            <form action="index.php" method="POST">
+                <div class="question-card">
+                    <h2>I tuoi dati</h2>
+                    <div class="form-group">
+                        <label for="email">Email</label>
+                        <input type="email" id="email" name="email" required>
                     </div>
-      <p class="hint"><?= ($_SERVER['HTTP_HOST'] ?? '') === 'appwizzy.com' ? 'AppWizzy' : 'Flatlogic' ?> AI is collecting your requirements and applying the first changes.</p>
-      <p class="hint">This page will update automatically as the plan is implemented.</p>
-      <p>Runtime: PHP <code><?= htmlspecialchars($phpVersion) ?></code> — UTC <code><?= htmlspecialchars($now) ?></code></p>
+                    <div class="form-group">
+                        <label for="nickname">Nickname</label>
+                        <input type="text" id="nickname" name="nickname" required>
+                    </div>
+                </div>
+
+                <?php foreach ($questions as $index => $q): ?>
+                <div class="question-card">
+                    <p class="question-title"><?= htmlspecialchars($q['question_text']) ?> <small>(<?= $q['points'] ?> punti)</small></p>
+                    <?php foreach ($q['answers'] as $a): ?>
+                    <div class="answer-option">
+                        <label>
+                            <input type="radio" name="answers[<?= $q['id'] ?>]" value="<?= $a['id'] ?>" required>
+                            <?= htmlspecialchars($a['answer_text']) ?>
+                        </label>
+                    </div>
+                    <?php endforeach; ?>
+                </div>
+                <?php endforeach; ?>
+                
+                <?php if (!empty($questions)): ?>
+                    <button type="submit" class="btn-submit">Invia le tue risposte</button>
+                <?php endif; ?>
+            </form>
+        <?php endif; ?>
     </div>
-  </main>
-  <footer>
-    Page updated: <?= htmlspecialchars($now) ?> (UTC)
-  </footer>
 </body>
 </html>

leaderboard.php

@@ -0,0 +1,155 @@
+<?php
+require_once 'db/config.php';
+
+// We need a setting to check if the leaderboard is published.
+// Let's assume a simple file-based flag for now, for speed.
+// In a more robust app, this would be a database setting.
+$is_published = file_exists('leaderboard_published.flag');
+
+$pdo = db();
+$leaderboard_data = [];
+
+if ($is_published) {
+    // This is the same scoring logic from admin/results.php
+    // It would be better to refactor this into a shared function.
+    function calculate_score($participant_id, $pdo) {
+        $score_stmt = $pdo->prepare(
+            'SELECT q.score, a.is_correct 
+             FROM submissions s
+             JOIN answers a ON s.answer_id = a.id
+             JOIN questions q ON s.question_id = q.id
+             WHERE s.participant_id = ?'
+        );
+        $score_stmt->execute([$participant_id]);
+        $results = $score_stmt->fetchAll(PDO::FETCH_ASSOC);
+
+        $total_score = 0;
+        foreach ($results as $result) {
+            if ($result['is_correct']) {
+                $total_score += (int)$result['score'];
+            } else {
+                $total_score -= (int)$result['score'];
+            }
+        }
+        return $total_score;
+    }
+
+    $participants_stmt = $pdo->query("SELECT id, nickname FROM participants");
+    $participants = $participants_stmt->fetchAll(PDO::FETCH_ASSOC);
+    
+    foreach ($participants as $participant) {
+        $leaderboard_data[] = [
+            'nickname' => $participant['nickname'],
+            'score' => calculate_score($participant['id'], $pdo)
+        ];
+    }
+
+    // Sort by score descending
+    usort($leaderboard_data, function($a, $b) {
+        return $b['score'] <=> $a['score'];
+    });
+}
+
+// Using the same frontend style as index.php
+// I will read the content of index.php and extract the header and footer
+// For now I will just copy the style part
+?>
+<!DOCTYPE html>
+<html lang="it">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Classifica Quiz</title>
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Roboto:wght@400;700&display=swap" rel="stylesheet">
+    <style>
+        body {
+            background-color: #1a1a2e;
+            color: #ffffff;
+            font-family: 'Roboto', sans-serif;
+            margin: 0;
+            padding: 40px 20px;
+            display: flex;
+            justify-content: center;
+            align-items: flex-start;
+            min-height: 100vh;
+        }
+        .container {
+            width: 100%;
+            max-width: 800px;
+            background-color: #16213e;
+            border-radius: 8px;
+            padding: 40px;
+            border: 1px solid #0f3460;
+        }
+        h1, h2 {
+            font-family: 'Orbitron', sans-serif;
+            color: #e94560;
+            text-align: center;
+            margin-bottom: 30px;
+        }
+        table {
+            width: 100%;
+            border-collapse: collapse;
+            margin-top: 20px;
+        }
+        th, td {
+            padding: 15px;
+            text-align: left;
+            border-bottom: 1px solid #0f3460;
+        }
+        th {
+            background-color: #1a1a2e;
+            font-weight: bold;
+            font-family: 'Orbitron', sans-serif;
+        }
+         tr:nth-child(even) { background-color: #1f2a4a; }
+        .rank {
+            font-weight: bold;
+            font-size: 1.2em;
+            color: #e94560;
+        }
+        .not-published {
+             text-align: center;
+             font-size: 1.2em;
+        }
+        .home-link {
+            display: block;
+            text-align: center;
+            margin-top: 30px;
+            color: #e94560;
+            text-decoration: none;
+            font-weight: bold;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <h1>Classifica Finale</h1>
+        <?php if ($is_published): ?>
+            <table>
+                <thead>
+                    <tr>
+                        <th>Rank</th>
+                        <th>Nickname</th>
+                        <th>Punteggio</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    <?php foreach ($leaderboard_data as $index => $row): ?>
+                        <tr>
+                            <td class="rank"><?php echo $index + 1; ?></td>
+                            <td><?php echo htmlspecialchars($row['nickname']); ?></td>
+                            <td><?php echo $row['score']; ?></td>
+                        </tr>
+                    <?php endforeach; ?>
+                </tbody>
+            </table>
+        <?php else: ?>
+            <p class="not-published">La classifica non è stata ancora pubblicata. Torna più tardi!</p>
+        <?php endif; ?>
+        <a href="index.php" class="home-link">Torna al Quiz</a>
+    </div>
+</body>
+</html>