.simulation-container {
  min-height: 80vh;
}

.step-number-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: bold;
  margin: 0 auto;
}

.ai-message {
  border-left: 4px solid #0d6efd;
  background-color: #f8f9fa;
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.simulation-step {
  animation: fadeIn 0.3s ease-out;
}

.progress-bar {
  transition: width 0.3s ease;
}

@media (max-width: 768px) {
  .simulation-container {
    padding: 1rem;
  }

  .step-number-circle {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .ai-message {
    font-size: 0.9rem;
  }
}