///////////////////////////////////// Task 1 Form Handling //////////////////////////
if ($_SERVER['REQUEST_METHOD'] === 'GET' && !empty($_GET)) {
    $required_fields = ['shop', 'name', 'email', 'rating'];
    $missing_fields = [];
    
    foreach ($required_fields as $field) {
        if (empty($_GET[$field])) {
            $missing_fields[] = $field;
        }
    }
    
    if (!empty($missing_fields)) {
        echo '<div class="error">Please fill in all required fields: ' . implode(', ', $missing_fields) . '</div>';
    } else {
        echo '<div class="feedback">';
        echo '<h3>Thank you for your feedback!</h3>';
        echo '<p><strong>Shop:</strong> ' . htmlspecialchars($_GET['shop']) . '</p>';
        echo '<p><strong>Name:</strong> ' . htmlspecialchars($_GET['name']) . '</p>';
        echo '<p><strong>Email:</strong> ' . htmlspecialchars($_GET['email']) . '</p>';
        echo '<p><strong>Rating:</strong> ' . htmlspecialchars($_GET['rating']) . '/5</p>';
        
        if (!empty($_GET['comments'])) {
            echo '<p><strong>Comments:</strong> ' . nl2br(htmlspecialchars($_GET['comments'])) . '</p>';
        }
        
        echo '</div>';
    }
}