.modal-mask {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.5);
      display: none;
      justify-content: center;
      align-items: center;
      z-index: 999;
    }
    .modal-content {
      background-color: white;
      width: 90%;
      max-width: 400px;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    }
    .modal-header {
      background-color: #007aff;
      color: white;
      padding: 12px 16px;
      font-weight: bold;
      font-size: 16px;
    }
    .modal-body {
      padding: 16px;
      color: #333;
      font-size: 14px;
      line-height: 1.6;
    }
    .modal-close {
      text-align: center;
      margin: 12px 0;
    }
    .close-btn {
      background-color: #007aff;
          color: white;
      border: none;
      border-radius: 20px;
      padding: 8px 20px;
      font-size: 14px;
      cursor: pointer;
    }