/* ============================================
   EngNetwork - Responsive Styles
   ============================================ */

@media (min-width: 992px) {
  .top-bar {
    display: block;
  }
}

@media (max-width: 1199px) {
  .membership-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1280px) {
  .nav-link {
    padding: 8px 8px;
    font-size: 0.75rem;
  }

  .header-actions .btn-sm {
    padding: 6px 14px;
    font-size: 0.8125rem;
  }
}

@media (max-width: 1199px) {
  .mobile-toggle {
    display: flex;
  }

  .header-inner {
    display: flex;
    justify-content: flex-start;
    gap: 16px;
  }

  .header-nav-group {
    flex: 1;
    min-width: 0;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 999;
  }

  .nav.open {
    transform: translateX(0);
  }

  .nav-item {
    border-bottom: 1px solid var(--gray-100);
  }

  .nav-link {
    padding: 16px;
    justify-content: space-between;
    font-size: 1rem;
  }

  .mega-menu,
  .mega-menu.wide {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    min-width: 100%;
    display: none;
    padding: 0 0 16px 16px;
    grid-template-columns: 1fr;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    margin: 0 16px 8px;
  }

  .nav-item.open .mega-menu {
    display: grid;
  }

  .nav-item.open .nav-link i {
    transform: rotate(180deg);
  }

  .header-actions .btn-outline,
  .header-actions .btn-primary {
    display: none;
  }
}

@media (max-width: 991px) {
  :root {
    --header-height: 70px;
  }

  .section {
    padding: 60px 0;
  }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-search {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-mentor-carousel {
    text-align: left;
  }

  .hero-mentor-carousel-label {
    justify-content: center;
    text-align: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .discipline-tags {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    max-width: 500px;
    margin: 0 auto;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .events-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .testimonials-slider {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

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

  .sidebar {
    position: static;
  }

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

  .auth-info {
    display: none;
  }

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

@media (max-width: 767px) {
  .section {
    padding: 50px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .hero {
    min-height: auto;
    padding: 50px 0;
  }

  .hero-search {
    flex-direction: column;
    border-radius: var(--radius-md);
    padding: 8px;
  }

  .hero-search input {
    border-radius: var(--radius-sm);
  }

  .hero-search .btn {
    border-radius: var(--radius-sm);
    width: 100%;
  }

  .hero-carousel-card {
    width: 220px;
    padding: 24px 20px 20px;
  }

  .hero-carousel-avatar,
  .hero-carousel-avatar img {
    width: 90px;
    height: 90px;
  }

  .hero-carousel-track {
    gap: 16px;
    animation-duration: 35s;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat strong {
    font-size: 1.5rem;
  }

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

  .membership-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .mentors-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
    margin: 0 auto;
  }

  .articles-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .content-main {
    padding: 24px;
  }

  .auth-form {
    padding: 40px 24px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-buttons .btn {
    width: 100%;
    max-width: 300px;
  }

  .page-header {
    padding: 40px 0;
  }

  .data-table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .logo-text {
    font-size: 1.125rem;
  }

  .logo-icon {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.875rem;
  }

  .mentor-card-footer {
    flex-direction: column;
  }
}