body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to right, #4facfe, #00f2fe);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.chat-container {
  background: white;
  width: 400px;
  max-width: 90%;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
  padding: 20px;
}

.chat-box {
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 15px;
  border: 1px solid #eee;
  padding: 10px;
  border-radius: 8px;
  background: #f9f9f9;
}

.message {
  display: flex;
  margin-bottom: 10px;
  align-items: flex-start;
}

.user, .bot {
  padding: 10px;
  border-radius: 12px;
  max-width: 70%;
}

.user {
  background: #daf8cb;
  margin-left: auto;
}

.bot {
  background: #e3f0ff;
  margin-right: auto;
}

.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  margin: 0 8px;
}

.input-area {
  display: flex;
  gap: 8px;
}