body {
            font-family: Arial, sans-serif;
            background: #f8f9fa;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            padding: 30px;
        }

        h2 {
            margin-bottom: 20px;
            font-weight: bold;
            color: #2ecc71;
        }

        .bundle-box {
            width: 350px;
            background: #fff;
            border: 2px solid #ccc;
            border-radius: 10px;
            margin: 12px 0;
            padding: 15px;
            transition: all 0.3s ease;
            overflow: hidden;
            position: relative;
        }

        .bundle-box.active {
            border-color: #2ecc71;
            background: #e8f9f0;
            transform: scale(1.02);
        }

        .bundle-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: bold;
            font-size: 16px;
            cursor: pointer;
        }

        .bundle-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .discount {
            color: black;
            font-weight: bold;
            font-size: 14px;
            margin-top: 5px;
            padding-left: 30px;
        }

        .most-popular {
            position: absolute;
            top: -2px;
            right: 10px;
            color: #2ecc71;
            font-size: 12px;
            font-weight: bold;
            padding: 2px 8px;
        }

        .bundle-content {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, opacity 0.4s ease;
        }

        .bundle-box.active .bundle-content {
            margin-top: 12px;
            opacity: 1;
            max-height: 500px;
        }

        label {
            display: block;
            margin: 8px 0 5px;
            font-size: 14px;
            font-weight: 500;
        }

        select {
            width: 100%;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid #ccc;
            margin-bottom: 10px;
        }

        .shipping {
            margin-top: 15px;
            font-size: 14px;
            font-weight: bold;
            color: #2ecc71;
            text-align: left;
            width: 350px;
        }

        .total {
            margin-top: -16px;
            font-size: 18px;
            font-weight: bold;
            color: #333;
            text-align: right;
            width: 350px;
        }

        .add-to-cart {
            width: 350px;
            margin-top: 15px;
            background: #2ecc71;
            color: white;
            font-size: 18px;
            font-weight: bold;
            padding: 12px;
            border-radius: 10px;
            text-align: center;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .add-to-cart:hover {
            background: #27ae60;
        }

        .bundle-content .table {
            display: table;
            border-spacing: 10px;
        }

        .row {
            display: table-row;
        }

        .cell {
            display: table-cell;
        }

        select {
            width: 70px;
        }