/* メンテナンス全画面オーバーレイ(maintenance.js) */
.mnt-overlay {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(5, 8, 20, 0.94);
  backdrop-filter: blur(6px);
}
.mnt-card {
  width: 100%;
  max-width: 340px;
  text-align: center;
  padding: 28px 22px 22px;
  border-radius: 18px;
  background: linear-gradient(150deg, #0d1430, #070b1c);
  border: 1px solid rgba(96, 130, 255, 0.4);
  box-shadow: 0 0 40px rgba(60, 90, 200, 0.3);
}
.mnt-icon { font-size: 52px; line-height: 1; }
.mnt-title {
  margin-top: 12px;
  font-size: 18px;
  font-weight: 900;
  color: #dcecff;
  letter-spacing: 0.04em;
}
.mnt-msg {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-dim, #9aa0b5);
}
.mnt-reload {
  margin-top: 18px;
  width: 100%;
  padding: 11px 0;
  border: none;
  border-radius: 11px;
  font-size: 13px;
  font-weight: 900;
  color: #04101c;
  cursor: pointer;
  background: linear-gradient(90deg, #22d3ee, #4da3ff);
  box-shadow: 0 2px 14px rgba(46, 144, 255, 0.4);
}
/* メンテ表示中は背面の操作を抑止 */
body.mnt-active { overflow: hidden; }