.popup-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.4);
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 9999;
    }

    .popup-content {
        background: white;
        padding: 20px;
        border-radius: 10px;
        width: 90%;
        max-width: 500px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        animation: popupFadeIn 0.3s ease;
    }


    @keyframes popupFadeIn {
        from {
            opacity: 0;
            transform: scale(0.95);
        }

        to {
            opacity: 1;
            transform: scale(1);
        }
    }


    /* Responsive: tối ưu input và button nhỏ gọn hơn */
    @media (max-width: 480px) {
        .popup-content {
            padding: 15px;
            font-size: 14px;
        }

        .popup-content input,
        .popup-content textarea {
            font-size: 14px;
        }

        .popup-content button {
            font-size: 14px;
            padding: 6px 10px;
        }
    }

    .bang-danh-sach {
        width: 100%;
        max-width: 1200px;
        margin: 20px auto;
        padding: 10px;
    }

    .tieu-de {
        font-size: 22px;
        margin-bottom: 15px;
        font-weight: bold;
        color: #222;
        text-align: center;
    }

    .bang-wrapper {
        overflow-x: auto;
    }

    .bang {
        width: 100%;
        border-collapse: collapse;
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
    }

    .bang thead {
        background-color: #e74c3c;
        color: white;
    }

    .bang th,
    .bang td {
        padding: 10px 15px;
        text-align: center;
        border: 1px solid #ddd;
    }

    .bang tbody tr:hover {
        background-color: #f9f9f9;
    }

    .row-duyet {
        background-color: #d4edda !important;
    }

    .modal {
        display: none;
        position: fixed;
        z-index: 1050;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        justify-content: center;
        align-items: center;
    }

    .modal-content {
        background-color: white;
        padding: 20px;
        border-radius: 6px;
        width: 400px;
    }

    .close {
        float: right;
        cursor: pointer;
        font-size: 20px;
    }


    .banner-container {
        text-align: center;
        /* Căn giữa nội dung bên trong */
        margin-top: 20px;
        /* Khoảng cách phía trên (tùy chọn) */
    }

    .banner {
        max-width: 100%;
        /* Tự co giãn theo chiều rộng */
        height: auto;
    }