body {
  margin:0;
  font-family: system-ui;
  background:#1e1f22;
  color:white;
}

.app {
  display:flex;
  height:100vh;
}

.sidebar {
  width:240px;
  background:#2b2d31;
  padding:15px;
}

.chat {
  flex:1;
  display:flex;
  flex-direction:column;
}

#messages {
  flex:1;
  overflow:auto;
  padding:20px;
}

.input {
  display:flex;
  gap:10px;
  padding:10px;
  background:#313338;
}

input {
  flex:1;
  padding:8px;
  background:#1e1f22;
  border:none;
  color:white;
}