body {
  background: #0f172a;
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.chat-container {
  width: 400px;
  height: 600px;
  background: #020617;
  color: white;
  display: flex;
  flex-direction: column;
  border-radius: 10px;
}

header {
  padding: 15px;
  text-align: center;
  border-bottom: 1px solid #1e293b;
}

#messages {
  flex: 1;
  padding: 10px;
  overflow-y: auto;
}

.message {
  margin-bottom: 8px;
}

.user {
  color: #38bdf8;
  font-weight: bold;
}

.input-area {
  display: flex;
  gap: 5px;
  padding: 10px;
}

input {
  flex: 1;
  padding: 8px;
  background: #020617;
  color: white;
  border: 1px solid #1e293b;
}

button {
  padding: 8px 12px;
}