.overlay-pu {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.65);
    display: none;
    justify-content: center;
    align-items: center;
    padding: 16px;
    z-index: 9999;
  }

  .popup {
    position: relative;
    max-width: min(92vw, 1000px);
    width: 100%;
  }

  .popup img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.45);
  }

  .close-btn {
    position: absolute;
    top: -12px;
    right: -12px;
    background: white;
    border-radius: 50%;
    width: 34px;
    height: 34px;
    text-align: center;
    line-height: 34px;
    font-weight: bold;
    cursor: pointer;
    font-size: 18px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.4);
  }

  .close-btn:hover {
    background: red;
    color: white;
  }

  /* Migliorie mobile */
  @media (max-width: 480px) {
    .close-btn {
      top: -8px;
      right: -8px;
      width: 30px;
      height: 30px;
      line-height: 30px;
      font-size: 16px;
    }
  }