#subscriber-popup {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6); /* dark overlay */
  z-index: 9999;
}

#subscriber-popup .subscriber-popup-content {
  background: #fff;  /* white modal background */
  color: #000;
  padding: 20px;
  max-width: 500px;
  margin: 100px auto;
  border-radius: 10px;
  text-align: center;
  position: relative;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

#subscriber-popup .subscriber-popup-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
}
