/* ===== Responsive Design ===== */
@media (max-width: 968px) {
  .nav-links {
    gap: var(--spacing-md);
  }

  .nav-links a {
    font-size: 0.875rem;
  }

  .architecture-content {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 640px) {
  section {
    padding: var(--spacing-2xl) 0;
  }

  .nav-content {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 90vh;
    padding-top: 140px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .device-screenshot {
    width: 220px;
  }

  .preview-devices {
    gap: var(--spacing-xl);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}