/* 🐕🦌💕 聊天室 — 主布局 */

#app {
  display: flex; flex-direction: column;
  height: 100vh; height: 100dvh;
}
#app.hidden { display: none; }

.app-layout {
  display: flex; flex: 1; overflow: hidden;
}
.main-content {
  flex: 1; display: flex; flex-direction: column; min-width: 0;
  overflow: hidden;
}