.admin-container { display: flex; flex-direction: column; width: 800px; margin: 20px auto; }
#user-list { border: 1px solid #ccc; padding: 5px; margin-bottom: 10px; }
.user-item { padding: 5px; border-bottom: 1px solid #eee; cursor: pointer; }
#chat-window { border: 1px solid #aaa; padding: 10px; }
#chat-box { height: 300px; overflow-y: auto; border: 1px solid #ccc; padding: 5px; margin-bottom: 10px; }
.user-msg { text-align: left; background: #f1f0f0; margin: 3px; padding: 5px; border-radius: 5px; }
.admin-msg { text-align: right; background: #dcf8c6; margin: 3px; padding: 5px; border-radius: 5px; }
#reply-input { width: 75%; padding: 5px; }
#reply-btn { width: 20%; padding: 5px; }