body {
  font-family: sans-serif;
  background: #f2f2f2;
  margin: 0;
  padding: 0;
}

.chat-container {
  max-width: 600px;
  margin: 30px auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  padding: 20px;
}

h1 {
  text-align: center;
  font-size: 1.5em;
  margin-bottom: 15px;
}

#chat-box {
  height: 300px;
  overflow-y: auto;
  border: 1px solid #ccc;
  padding: 10px;
  margin-bottom: 15px;
  background-color: #fafafa;
  font-size: 0.95em;
  border-radius: 5px;
}

.message {
  margin-bottom: 10px;
}

.message strong {
  display: block;
  margin-bottom: 2px;
  color: #333;
}

form {
  display: flex;
  gap: 10px;
}

input[type="text"] {
  flex: 1;
  padding: 10px;
  font-size: 1em;
  border-radius: 5px;
  border: 1px solid #ccc;
}

button {
  padding: 10px 15px;
  font-size: 1em;
  background-color: #0078d4;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #005fa3;
}

a {
  color: #0078d4;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}