/* 共通エラーダイアログ用CSS */
.error-dialog {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}
.error-dialog-inner {
  background: #fff;
  padding: 32px 24px 24px 24px;
  border-radius: 8px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.2);
  text-align: center;
  min-width: 280px;
  max-width: 90vw;
}
#error-dialog-message {
  font-size: 1.1em;
  margin-bottom: 16px;
  color: #d32f2f;
}
#error-dialog-code {
  font-size: 0.95em;
  color: #555;
  margin-bottom: 20px;
}
.error-dialog-btn {
  background: #d32f2f;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 8px 32px;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.2s;
}
.error-dialog-btn:hover {
  background: #b71c1c;
}