.multi-parent {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0 28px;
}

.multi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.multi-header h1,
.multi-header p,
.multi-chat-panel h2 {
  margin: 0;
}

.multi-header p {
  color: var(--muted);
  font-size: 13px;
}

.multi-normal-link {
  color: var(--accent-dark);
  font-weight: 700;
}

.multi-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.multi-auth {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.multi-auth .auth-form {
  grid-template-columns: minmax(150px, 1fr) minmax(150px, 1fr) auto;
}

.multi-content {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.8fr);
  gap: 12px;
}

.multi-content.hidden {
  display: none;
}

.multi-room-panel,
.multi-users-panel,
.multi-chat-panel {
  min-height: 0;
}

.multi-room-panel .section-head {
  align-items: center;
}

.multi-room-panel .section-head button {
  width: auto;
}

.multi-room-tools {
  display: flex;
  gap: 8px;
}

.multi-record-dialog {
  width: min(680px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  color: var(--ink);
  background: var(--panel);
}

.multi-record-dialog::backdrop {
  background: rgb(24 32 29 / 32%);
}

.multi-record-content {
  display: grid;
  gap: 10px;
}

.multi-record-content .record-result-list {
  max-height: min(420px, 50vh);
  overflow-y: auto;
}

.multi-room-panel .room-list {
  max-height: 55vh;
  overflow-y: auto;
}

.multi-room-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.multi-room-row .room-name-button {
  padding: 4px 0;
}

.multi-room-state {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.multi-chat-panel {
  grid-column: 1 / -1;
}

.multi-chat-panel .lobby-chat-log {
  height: 220px;
  margin: 8px 0;
}

@media (max-width: 760px) {
  .multi-content,
  .multi-auth .auth-form {
    grid-template-columns: 1fr;
  }
  .multi-parent::before {
    content: "マルチウィンドウ版はデスクトップ環境向けです";
    display: block;
    margin-bottom: 10px;
    color: #8f2e24;
    font-weight: 700;
  }
}