body {
        background-color: #f8f9fa;
        font-size: 15px;
    }

    .card {
        border: none;
        border-radius: 12px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    }

    .card-header {
        background: #fff;
        border-bottom: 1px solid #eee;
        font-weight: 600;
        font-size: 18px;
    }

    label {
        font-weight: 500;
        font-size: 14px;
    }

    .table thead th {
        background-color: #f1f3f5;
        font-weight: 600;
        text-align: center;
    }

    .table tbody td {
        vertical-align: middle;
    }

    .total-box {
        font-size: 18px;
        font-weight: 600;
    }

    .total-box span {
        font-size: 22px;
        color: #0d6efd;
    }

    .btn {
        border-radius: 8px;
    }

    .btn-add {
        background-color: #e9ecef;
        color: #333;
        border: none;
    }

    .btn-add:hover {
        background-color: #dee2e6;
    }

    body {
            background-color: #f4f6f9;
            font-size: 15px;
        }

        .card {
            border: none;
            border-radius: 14px;
            box-shadow: 0 8px 24px rgba(0,0,0,.06);
        }

        .card-header {
            background: #fff;
            font-size: 20px;
            font-weight: 600;
            border-bottom: 1px solid #eee;
        }

        label {
            font-weight: 500;
            font-size: 14px;
        }

        .section-title {
            font-weight: 600;
            color: #6c757d;
            margin-bottom: 10px;
        }

        .table thead th {
            background-color: #f1f3f5;
            text-align: center;
            font-weight: 600;
        }

        .table tbody td {
            vertical-align: middle;
        }

        .total-box {
            font-size: 18px;
            font-weight: 600;
        }

        .total-box span {
            font-size: 22px;
            color: #0d6efd;
        }

        .btn {
            border-radius: 8px;
        }

        .btn-back {
            background-color: #e9ecef;
            border: none;
        }

        .btn-back:hover {
            background-color: #dee2e6;
        }