/* ==========================================================================
   Sab Works Pvt Ltd — breakpoints (mobile-first enhancements)
   480 / 768 / 1024 / 1440
   ========================================================================== */

@media (min-width: 480px) {
  .hero-visual img {
    height: 320px;
  }

  .stats {
    padding: 1.8rem 1.5rem;
  }

  .cta-banner {
    padding: 2.6rem 2rem;
  }
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-panel {
    position: static;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
    max-height: none;
    overflow: visible;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    margin: 0;
  }

  .nav-links a {
    padding: 0.4rem 0.65rem;
  }

  .sub-toggle {
    width: auto;
    padding: 0.4rem 0.65rem;
    justify-content: flex-start;
    border-radius: 8px;
  }

  .sub-toggle:hover,
  .sub-toggle[aria-current="page"] {
    color: var(--color-primary);
  }

  .has-sub:hover,
  .has-sub:focus-within,
  .has-sub.is-open {
    z-index: 200;
  }

  .sub-menu {
    position: absolute;
    top: calc(100% + 0.2rem);
    right: 0;
    left: auto;
    min-width: 18.5rem;
    padding: 0.55rem;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 200;
  }

  #courses-menu {
    left: 0;
    right: auto;
    min-width: 20.5rem;
  }

  #gallery-menu {
    left: 0;
    right: auto;
    min-width: 11rem;
  }

  .sub-menu::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -0.75rem;
    height: 0.75rem;
  }

  .has-sub:hover .sub-menu,
  .has-sub:focus-within .sub-menu,
  .has-sub.is-open .sub-menu {
    display: grid;
  }

  .sub-menu a {
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
  }

  .sub-menu a:hover,
  .sub-menu a[aria-current="location"] {
    background: var(--color-primary-soft);
  }

  .hero-grid,
  .split {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
    align-items: center;
  }

  .detail-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem;
    align-items: start;
  }

  .hero-visual img,
  .split img,
  .campus-inline {
    height: 380px;
  }

  .stats {
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
  }

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

  .course-grid,
  .story-grid,
  .partner-grid,
  .campus-grid,
  .gallery-grid,
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
  }

  .filter-bar {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .contact-top {
    margin-top: -2.8rem;
    padding-top: 0;
  }

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

  .contact-tile {
    border-bottom: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
  }

  .contact-tile:nth-child(2n) {
    border-right: 0;
  }

  .contact-tile:nth-child(n + 3) {
    border-bottom: 0;
  }

  .contact-workspace {
    grid-template-columns: 1.12fr 0.88fr;
    align-items: start;
    gap: 1.6rem;
  }

  .campus-panel {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
  }

  .sidebar {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 4.5rem 0;
  }

  .contact-top {
    margin-top: -3rem;
    padding-top: 0;
    padding-bottom: 1.6rem;
  }

  .contact-main {
    padding-top: 1.6rem;
  }

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

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

  .story-grid,
  .partner-grid,
  .campus-grid,
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .contact-strip {
    grid-template-columns: 1.35fr 0.95fr 1fr 1.15fr;
  }

  .contact-tile {
    border-bottom: 0;
    border-right: 1px solid var(--color-border);
  }

  .contact-tile:nth-child(2n),
  .contact-tile:nth-child(n + 3),
  .contact-tile:last-child {
    border-right: 1px solid var(--color-border);
    border-bottom: 0;
  }

  .contact-tile:last-child {
    border-right: 0;
  }

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

  .form-row--full {
    grid-column: 1 / -1;
  }

  .contact-form-card {
    padding: 1.8rem 1.7rem 1.9rem;
  }

  .map-wrap,
  .map-wrap iframe {
    min-height: 280px;
    height: 280px;
  }

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

  .hero {
    padding: 4rem 0 2rem;
  }

  .quote {
    min-height: 15rem;
  }

  .photo-slider img {
    height: 460px;
  }

  .campus-photo {
    height: 220px;
  }
}

@media (min-width: 1440px) {
  :root {
    --container: 78rem;
  }

  .hero h1 {
    font-size: 3.8rem;
  }

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

  .partner-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}