jQuery Study Plan

<!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; }
        .plan-card { background: white; padding: 20px; border-radius: 8px; border: 1px solid #cbd5e1; max-width: 450px; }
        .day-row { padding: 10px 0; border-bottom: 1px solid #f1f5f9; display: flex; align-items: center; }
        .day-row input { margin-right: 12px; transform: scale(1.2); }
        .progress-bar-bg { background: #e2e8f0; border-radius: 99px; height: 12px; margin: 15px 0; overflow: hidden; }
        .progress-bar-fill { background: #00758f; height: 100%; width: 0%; transition: width 0.3s; }
    </style>
</head>
<body>
    <div class="plan-card">
        <h3 style="margin-top:0; color:#0d2e5c;">Target Belajar 7 Hari</h3>
        <div class="progress-bar-bg">
            <div id="progresFill" class="progress-bar-fill"></div>
        </div>
        <p id="teksPersen" style="font-size:13px; font-weight:bold; color:#00758f; margin:0 0 10px 0;">Kemajuan: 0% Selesai</p>

        <div class="day-row"><label><input type="checkbox" class="cbHari"> Hari 1: Pengenalan & Selektor</label></div>
        <div class="day-row"><label><input type="checkbox" class="cbHari"> Hari 2: Penanganan Event Pengguna</label></div>
        <div class="day-row"><label><input type="checkbox" class="cbHari"> Hari 3: Efek Fade & Slide</label></div>
        <div class="day-row"><label><input type="checkbox" class="cbHari"> Hari 4: Manipulasi Teks & HTML</label></div>
        <div class="day-row"><label><input type="checkbox" class="cbHari"> Hari 5: Navigasi DOM Traversing</label></div>
        <div class="day-row"><label><input type="checkbox" class="cbHari"> Hari 6: Mengambil Data dengan AJAX</label></div>
        <div class="day-row"><label><input type="checkbox" class="cbHari"> Hari 7: Ujian Sertifikasi Skillance</label></div>
    </div>

    <script>
        $(document).ready(function() {
            $('.cbHari').change(function() {
                const total = $('.cbHari').length;
                const checked = $('.cbHari:checked').length;
                const persen = Math.round((checked / total) * 100);

                $('#progresFill').css('width', persen + '%');
                $('#teksPersen').text('Kemajuan: ' + persen + '% Selesai (' + checked + ' dari ' + total + ' hari)');
            });
        });
    </script>
</body>
</html>