.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: none;
    z-index: 999;
  }
  
  .popup-box {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    padding: 30px;
    width: 600px;
    max-width: 90%;
    z-index: 1000;
    display: none;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  }
  
  .close-btn {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 24px;
    cursor: pointer;
    color: #aaa;
  }
  .close-btn:hover {
    color: #000;
  }
  
  .popup-alert {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #2ecc71;
    color: white;
    padding: 12px 20px;
    border-radius: 6px;
    font-weight: 500;
    display: none;
    z-index: 1100;
  }