.group-header-bar {
    display: flex;
    justify-content: space-between;
    padding: 0 10px;
}
.create-channel-popup.hidden { display: none; }
.create-channel-popup {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}
.create-channel-popup .popup-inner {
    background: #ffffff;
    padding: 20px;
    border-radius: 8px;
    width: 320px;
}
button.btn-add-channel {
    padding: 0;
    margin: 0;
    background: none;
    color: black;
}