/* ==========================================================================
   RESPONSIVE DESIGN SYSTEM
   Breakpoints: Mobile (< 640px), Tablet (< 768px), Laptop (< 1024px)
   ========================================================================== */

/* Laptop & Medium Screens (< 1024px) */
@media (max-width: 1024px) {
  :root {
    --max-width: 960px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

/* Tablet & Mobile (< 768px) */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .section {
    padding: 3.75rem 0;
  }

  .section-hero {
    padding: 4rem 0 3rem;
  }

  /* Navigation Mobile View */
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1.25rem;
    box-shadow: var(--shadow-xl);
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-slow), opacity var(--transition-normal);
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    padding: 0.5rem 0;
  }

  .nav-link.active::after {
    bottom: -4px;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .workflow-diagram {
    flex-direction: column;
    align-items: stretch;
  }

  .workflow-arrow {
    text-align: center;
    transform: rotate(90deg);
    margin: 0.25rem 0;
  }
}

/* Small Phones (< 480px) */
@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .cta-card {
    padding: 2.5rem 1.25rem;
  }

  .card {
    padding: 1.5rem;
  }

  .project-body {
    padding: 1.25rem;
  }

  .project-preview {
    height: 180px;
  }
}