jQuery Effects

<!DOCTYPE html>
<html>
<head>
    <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
    <style>
        body { font-family: sans-serif; padding: 20px; background: #f8fafc; }
        .stage { background: white; padding: 25px; border: 1px solid #cbd5e1; border-radius: 8px; min-height: 120px; display: flex; align-items: center; justify-content: center; }
        .box { width: 100px; height: 100px; background: #fca311; border-radius: 8px; }
        button { background: #0d2e5c; color: white; border: none; padding: 8px 14px; border-radius: 6px; cursor: pointer; margin: 4px; }
    </style>
</head>
<body>
    <h3>Uji Efek Transisi Visual</h3>
    <div class="stage">
        <div class="box" id="kotakUji"></div>
    </div>

    <div style="margin-top: 15px;">
        <button id="btnFadeToggle">fadeToggle()</button>
        <button id="btnSlideToggle">slideToggle()</button>
        <button id="btnZoomAnim">animate (Zoom)</button>
        <button id="btnReset" style="background:#64748b;">Reset</button>
    </div>

    <script>
        $(document).ready(function() {
            $('#btnFadeToggle').click(function() { $('#kotakUji').fadeToggle(); });
            $('#btnSlideToggle').click(function() { $('#kotakUji').slideToggle(); });
            $('#btnZoomAnim').click(function() {
                $('#kotakUji').animate({ width: '160px', height: '160px', opacity: 0.5 }, 400);
            });
            $('#btnReset').click(function() {
                $('#kotakUji').stop().css({ width: '100px', height: '100px', opacity: 1, display: 'block' });
            });
        });
    </script>
</body>
</html>