// Add schema markup
$schema = array(
    "@context" => "https://schema.org",
    "@type" => "WebApplication",
    "name" => "Spelling Bee Practice",
    "description" => "Practice spelling bee puzzles with customizable difficulty levels. Improve your vocabulary and spelling skills.",
    "applicationCategory" => "EducationalApplication",
    "operatingSystem" => "Web",
    "offers" => array(
        "@type" => "Offer",
        "price" => "0",
        "priceCurrency" => "USD"
    ),
    "author" => array(
        "@type" => "Organization",
        "name" => "SpellBee",
        "url" => "https://www.spellbeepuzzle.com"
    ),
    "publisher" => array(
        "@type" => "Organization",
        "name" => "SpellBee",
        "logo" => array(
            "@type" => "ImageObject",
            "url" => "https://www.spellbeepuzzle.com/images/logo.png"
        )
    ),
    "mainEntityOfPage" => array(
        "@type" => "WebPage",
        "@id" => "https://www.spellbeepuzzle.com/practice"
    ),
    "learningResourceType" => array(
        "@type" => "LearningResource",
        "name" => "Spelling Bee Practice",
        "description" => "Interactive spelling practice with customizable difficulty levels",
        "educationalUse" => "Practice",
        "learningResourceType" => "Interactive Resource",
        "interactivityType" => "Active",
        "educationalLevel" => "Beginner to Advanced"
    )
);

$template->set('SCHEMA_JSON', json_encode($schema, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));