body {
  background-color: #f0f4f8;
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  text-align: center;
  padding: 40px;
  background-color: #1a237e;
  color: white;
}

.chat-section {
  max-width: 600px;
  margin: 40px auto;
  padding: 20px;
  background-color: white;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

textarea {
  width: 100%;
  height: 100px;
  font-size: 16px;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  resize: vertical;
}

button {
  display: block;
  width: 100%;
  padding: 12px;
  margin-top: 10px;
  background-color: #1a237e;
  color: white;
  border: none;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
}

#chatLog {
  margin-top: 20px;
}