.modal-button-wrapper {
  text-align: center;
  margin: 100px 0;
}

.open-modal {
  padding: 15px 30px;
  font-size: 18px;
  background-color: #0077cc;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  width: 100vw;
  height: 100vh;
  background: rgba(50, 50, 100, 0.7); /* 🔷 青系の半透明背景 */
  justify-content: center;
  align-items: center;
}

.modal-content {
  background: #fff;
  padding: 30px;
  max-width: 800px;
  width: 90%;
  position: relative;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
  max-height: 80vh; /* 画面高の80%までに制限 */
  overflow-y: auto; /* はみ出したらスクロール */
}


.close-modal {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 28px;
  font-weight: bold;
  color: #333;
  cursor: pointer;
}