/* ==========================================================================
   RESPONSIVE ADJUSTMENTS - SCALABLE & PERSISTENT 2-COLUMN LAYOUT
   ========================================================================== */

@media (max-width: 1400px) {
  .nav-menu {
    gap: 8px;
  }
  .nav-link {
    font-size: 0.925rem;
    padding: 6px 2px;
  }
  .campus-links {
    font-size: 0.8rem;
  }
  .btn-tuvan {
    padding: 10px 18px;
    font-size: 0.9rem;
  }
  .khampha-text-box {
    padding: 10px 30px 45px 20px !important;
  }
}

@media (max-width: 1200px) {
  .nav-menu {
    gap: 5px;
  }
  .nav-link {
    font-size: 0.85rem;
    padding: 5px 1px;
  }
  .campus-links {
    font-size: 0.75rem;
  }
  .brand-logo img {
    height: 44px;
  }
  .khampha-full-grid {
    grid-template-columns: 44% 56% !important;
  }
  .khampha-text-box {
    padding: 10px 20px 35px 15px !important;
  }
}

@media (max-width: 991px) {
  .nav-menu {
    display: none;
  }
  .campus-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
}

/* Chỉ chuyển thành 1 cột trên điện thoại di động (< 768px) */
@media (max-width: 768px) {
  .container-full {
    padding: 0 16px;
  }
  .header-inner {
    height: 70px;
  }
  .brand-logo img {
    height: 40px;
  }
  .khampha-full-grid {
    grid-template-columns: 1fr !important;
  }
  .khampha-img-box {
    position: relative !important;
    top: 0 !important;
    width: 100% !important;
  }
  .khampha-img-box img {
    width: 100% !important;
    height: auto !important;
  }
  .khampha-text-box {
    padding: 25px 16px 50px !important;
  }
  .khampha-heading {
    font-size: 1.45rem;
  }
  .elementor-tab-title {
    font-size: 1rem;
    padding: 16px 0;
  }

  /* TẠI SAO CHỌN UEH RESPONSIVE */
  .section-taisao {
    padding: 40px 0 60px 0;
  }
  .taisao-title {
    font-size: 1.6rem;
    margin-bottom: 25px;
  }
  .taisao-visual-container {
    flex-direction: column;
    align-items: center;
    margin-bottom: 30px;
  }
  .taisao-image-box {
    width: 100%;
    max-width: 100%;
  }
  .taisao-tabs-sidebar {
    flex-direction: row;
    margin-left: 0;
    margin-top: 15px;
    gap: 10px;
  }
  .taisao-tab-btn {
    writing-mode: horizontal-tb;
    transform: none;
    padding: 10px 18px;
    font-size: 0.9rem;
  }
  .taisao-tab-btn:hover {
    transform: translateY(-2px);
  }
  .taisao-detail-container {
    flex-direction: column;
    gap: 20px;
    padding: 0 10px;
  }
  .taisao-detail-heading {
    flex: 1 1 100%;
    text-align: left;
    width: 100%;
  }
  .taisao-detail-heading h3 {
    font-size: 1.35rem;
  }
  .taisao-divider-line {
    width: 100%;
    height: 2px;
  }
  .taisao-detail-content {
    flex: 1 1 100%;
    width: 100%;
  }
  .taisao-ranking-list li {
    font-size: 0.95rem;
  }
  .taisao-visual-container.layout-reverse {
    flex-direction: column;
  }
  .taisao-tabs-sidebar.sidebar-left {
    margin-right: 0;
    margin-top: 15px;
  }
  .taisao-block-item {
    margin-bottom: 50px;
  }

  /* VIDEO SHOWCASE RESPONSIVE */
  .video-showcase-grid {
    grid-template-columns: 1fr;
  }
  .video-content-col {
    padding: 35px 20px 45px 20px;
  }
  .video-heading-badge {
    margin-left: 0 !important;
    padding: 14px 20px;
    margin-bottom: 18px;
  }
  .video-heading-badge h2 {
    font-size: 1.4rem;
  }
  .video-body-text p {
    font-size: 0.975rem;
    line-height: 1.65;
  }
}