#tqn-loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,.45);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

    #tqn-loading-overlay.show {
        display: flex;
    }

#tqn-loading-box {
    background: #fff;
    border-radius: 10px;
    padding: 22px 28px;
    width: 280px;
    max-width: 80%;
    box-shadow: 0 6px 24px rgba(0,0,0,.35);
}

#tqn-loading-track {
    height: 10px;
    background: #e9ecef;
    border-radius: 5px;
    overflow: hidden;
}

#tqn-loading-bar {
    height: 100%;
    width: 0;
    background: #007bff;
    border-radius: 5px;
    transition: width .4s ease;
}