body {
  font-family: sans-serif;
  background: linear-gradient(135deg, #e0c3fc, #8ec5fc);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.chat-container {
  background: white;
  width: 100%;
  max-width: 420px;
  height: 80vh;
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.header {
  padding: 15px;
  text-align: center;
  border-bottom: 1px solid #eee;
}

#chat {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
}

.msg {
  margin: 5px 0;
  padding: 10px;
  border-radius: 10px;
  max-width: 80%;
}

.user {
  background: #667eea;
  color: white;
  margin-left: auto;
}

.bot {
  background: #eee;
}

.input-area {
  display: flex;
  padding: 10px;
}

input {
  flex: 1;
  padding: 10px;
}

button {
  padding: 10px;
}