body {
  font-family: Tahoma, sans-serif;
  background: #f0f0f0;
  display: flex;
  justify-content: center;
  padding: 30px;
}

.chat-container {
  background: white;
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 500px;
}

#chat-box {
  border: 1px solid #ccc;
  padding: 10px;
  height: 300px;
  overflow-y: auto;
  margin-bottom: 10px;
  border-radius: 10px;
  background: #fafafa;
}

textarea {
  width: 100%;
  height: 60px;
  resize: none;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #aaa;
}

button {
  margin-top: 10px;
  padding: 10px 15px;
  background: #1a73e8;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}