.popup-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
    z-index: 9999;
  }
  .popup-box {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    animation: popIn 0.3s ease;
  }
  .popup-box h3 {
    margin: 0 0 10px;
    color: #2c3e50;
  }
  .popup-box p {
    margin-bottom: 15px;
    color: #555;
  }
  .popup-box button {
    padding: 8px 20px;
    background: #0078ff;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
  }
  .popup-box button:hover {
    background: #005ecb;
  }
  @keyframes popIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
  }