.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 1000;
}

.modal-window {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  max-width: 90%;
  padding: 20px 30px;
  background: #ffffff;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  z-index: 1001;
}

.close-button {
  float: right;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}