body {
  background-color: #f8f9fa;
}

.chat-container {
  max-width: 800px;
  margin: 50px auto;
}

.chat-box {
  height: 500px;
  overflow-y: auto;
  background-color: white;
  border: 1px solid #dee2e6;
  border-radius: 10px;
  padding: 20px;
  padding-bottom: 80px;
}

.message {
  margin-bottom: 15px;
  padding: 10px 15px;
  border-radius: 15px;
  max-width: 70%;
}

.message.sent {
  background-color: #0d6efd;
  color: white;
  margin-left: auto;
  text-align: right;
}

.message.received {
  background-color: #e9ecef;
  color: #212529;
}

.message-time {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: 5px;
}

#credentialsModal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
}

#credentialsModal::backdrop {
  background: rgba(0, 0, 0, 0.5);
}