/* Full-screen overlay */
#embedModal {
  display: none;                  /* Hidden by default */
  position: fixed;                /* Stay in place on screen */
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.6); /* Dim background */
  z-index: 9999;                  /* On top of all content */
}

/* Centered popup box */
#embedModal .modal-content {
  position: relative;
  background: #fff;
  width: 80%;
  max-width: 900px;
  margin: 10% auto;               /* Center vertically & horizontally */
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

/* Close button in top-right corner */
#embedModal .close-button {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 24px;
  cursor: pointer;
}