body {
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background: #f5f6fa;
}

.chat-container {
  width: 95%;
  max-width: 500px;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  height: 90vh;
}

.chat-container h2 {
  margin: 0 0 10px;
  text-align: center;
}

.chat-box {
  flex: 1;
  border: 1px solid #ddd;
  padding: 10px;
  border-radius: 5px;
  overflow-y: auto;
  margin-bottom: 10px;
}

.message {
  margin: 8px 0;
  padding: 8px 12px;
  border-radius: 8px;
  max-width: 80%;
  word-wrap: break-word;
}

.user {
  background: #d1f7c4;
  align-self: flex-end;
}

.bot {
  background: #f1f0f0;
  align-self: flex-start;
}

.input-container {
  display: flex;
}

#user-input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px 0 0 5px;
}

#send-btn {
  padding: 10px 20px;
  border: none;
  background: #007BFF;
  color: white;
  border-radius: 0 5px 5px 0;
  cursor: pointer;
}

#send-btn:hover {
  background: #0056b3;
}