body { font-family: sans-serif; background-color: #f4f4f9; display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; }
#chat-container { width: 400px; height: 600px; border: 1px solid #ccc; border-radius: 8px; background-color: #fff; display: flex; flex-direction: column; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
#chat-window { flex-grow: 1; padding: 10px; overflow-y: auto; border-bottom: 1px solid #ccc; }
.message { margin-bottom: 10px; padding: 8px 12px; border-radius: 18px; max-width: 80%; line-height: 1.4; }
.user-message { background-color: #007bff; color: white; align-self: flex-end; margin-left: auto; }
.bot-message { background-color: #e9e9eb; color: black; align-self: flex-start; }
#chat-form { display: flex; padding: 10px; }
#message-input { flex-grow: 1; border: 1px solid #ccc; border-radius: 18px; padding: 10px; }
button { background-color: #007bff; color: white; border: none; border-radius: 18px; padding: 10px 15px; margin-left: 10px; cursor: pointer; }
button:hover { background-color: #0056b3; }