body {
  margin: 0;
  padding: 40px;
  font-family: Arial, sans-serif;
  background: #111;
  color: white;
  display: flex;
  justify-content: center;
}

.chat-container {
  width: 100%;
  max-width: 700px;
  background: #1b1b1b;
  border: 2px solid #333;
  border-radius: 12px;
  padding: 20px;
}

#chat-box {
  height: 400px;
  overflow-y: auto;
  background: #0d0d0d;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 15px;
}

.message {
  margin-bottom: 12px;
}

.user {
  color: #4fc3f7;
}

.bot {
  color: #ff6b6b;
}

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

input {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 8px;
}

button {
  padding: 12px 18px;
  border: none;
  border-radius: 8px;
  background: crimson;
  color: white;
  cursor: pointer;
}