/* Responsive Design Stylesheet */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-visual-card {
    max-width: 580px;
    margin: 0 auto;
  }

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

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

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

  .trainer-card-layout {
    grid-template-columns: 1fr;
  }

  .course-detail-layout {
    grid-template-columns: 1fr;
  }

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

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

  .contact-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  :root {
    --nav-height: 68px;
  }

  .section-padding {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .nav-links, .nav-actions .btn-login {
    display: none;
  }

  .nav-toggle-btn {
    display: block;
  }

  .hero-content h1 {
    font-size: 2.35rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

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

  .how-it-works-grid {
    grid-template-columns: 1fr;
  }

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

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

  .enrolled-courses-grid {
    grid-template-columns: 1fr;
  }

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

  .lesson-player-container {
    grid-template-columns: 1fr;
  }

  .lesson-sidebar {
    position: static;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .lesson-content-area {
    padding: 1.5rem 1rem;
  }

  .lesson-article {
    padding: 1.75rem 1.25rem;
  }

  .quiz-card {
    padding: 1.5rem 1.25rem;
  }

  .cert-recipient-name {
    font-size: 1.85rem;
    padding: 0 1rem 0.5rem 1rem;
  }

  .cert-frame {
    padding: 2.5rem 1.5rem;
    border-width: 8px;
  }

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

  .cert-gold-seal {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

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

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.95rem;
  }

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

  .hero-ctas .btn {
    width: 100%;
  }

  .catalog-search-row {
    flex-direction: column;
  }

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

  .lesson-nav-bar {
    flex-direction: column;
    gap: 0.75rem;
  }

  .lesson-nav-bar .btn {
    width: 100%;
  }

  .timer-controls {
    flex-direction: column;
  }
}