/* Responsive — desktop (1280) dựng trước, sau đó co dần: 1920 / 1440 / 1280 / 1024 / 768 / 390 */

/* >= 1600: chỉ có thêm khoảng thở hai bên, container giữ nguyên 1230 */

@media (max-width: 1279px) {
  :root { --container-gutter: 20px; }
  .menu-item > a { padding: 0 11px; font-size: 14px; }
  .site-header__inner { gap: 16px; }
  .ad-slot--leader img { width: 640px; height: auto; aspect-ratio: 728 / 90; }
}

@media (max-width: 1199px) and (min-width: 1101px) {
  .menu-item > a { padding: 0 9px; font-size: 13.5px; }
  .menu-item--home > a { padding: 0; }
  .ad-slot--leader img { width: 600px; }
}

/* tablet ngang: cột phải xuống dưới thành lưới 2 cột */
@media (max-width: 1100px) {
  .home-grid { grid-template-columns: minmax(0, 1fr); }
  .home-side { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .widget--popular { min-height: 0; }
  .ad-slot--tall { min-height: 260px; }
  .layout--sidebar { grid-template-columns: minmax(0, 1fr); }
  .sidebar { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .site-footer__grid { grid-template-columns: 1.4fr 1.4fr 1fr; }
  .footer-col:last-child { grid-column: auto; }
}

/* <= 1100: menu thu thành ngăn kéo */
@media (max-width: 1100px) {
  .site-header__inner { height: auto; padding: 10px 0; flex-wrap: wrap; justify-content: space-between; }
  .ad-slot--leader { margin-left: 0; width: 100%; }
  .ad-slot--leader img { width: 100%; max-width: 728px; margin-inline: auto; height: auto; }
  .site-nav__inner { align-items: center; justify-content: space-between; }
  .nav-toggle { display: inline-flex; align-items: center; gap: 10px; height: 100%; padding: 0 14px 0 4px; color: #fff; font: 700 14px/1 var(--font-heading); }
  .nav-toggle .ico { width: 24px; height: 24px; }
  .nav-search { height: 100%; margin-left: 0; }
  .site-menu { position: fixed; z-index: 150; top: 0; left: 0; bottom: 0; width: min(86vw, 320px); flex-direction: column; justify-content: flex-start; background: var(--c-navy); padding: 10px 0 24px; overflow-y: auto; transform: translateX(-102%); transition: transform var(--t-base) var(--ease); box-shadow: var(--shadow-lg); }
  .menu-open .site-menu { transform: none; }
  .menu-close { display: flex; justify-content: flex-end; padding: 0 10px 6px; }
  .menu-close__btn { width: 40px; height: 40px; display: grid; place-items: center; color: #fff; border-radius: 50%; }
  .menu-close__btn:hover { background: rgba(255, 255, 255, .14); }
  .menu-close__btn .ico { width: 22px; height: 22px; }
  .menu-item { display: block; }
  .menu-item > a { padding: 14px 22px; font-size: 15.5px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
  .menu-item > a::after { left: 0; right: auto; top: 0; bottom: 0; width: 4px; height: auto; transform: scaleY(0); border-radius: 0 3px 3px 0; }
  .menu-item.is-current > a::after { transform: scaleY(1); }
  .menu-item--home > a { width: auto; justify-content: flex-start; gap: 10px; background: transparent; }
  .menu-item--home .menu-label { position: static; width: auto; height: auto; clip: auto; }
  .site-footer__bottom-inner { height: auto; padding: 12px 0; flex-wrap: wrap; }
}

@media (max-width: 900px) {
  .top-row { grid-template-columns: minmax(0, 1fr); height: auto; }
  .hero { height: 380px; }
  .hero-side ul { grid-template-rows: none; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .side-item { grid-template-columns: minmax(0, 1fr); gap: 8px; align-content: start; }
  .side-item__thumb { width: 100%; aspect-ratio: 16 / 10; }
  .block-grid { grid-template-columns: minmax(0, 1fr); }
  .lead { grid-template-columns: 220px minmax(0, 1fr); }
  .post-row { grid-template-columns: 200px minmax(0, 1fr); gap: 16px; }
  .post-row__title { font-size: 17px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .pslide__item { flex-basis: 100%; }
  .pcard .overlay-card__title { font-size: 17px; }
  .pcard .overlay-card__body { left: 14px; bottom: 13px; }
  .pslide__nav { width: 34px; height: 34px; top: calc(50% - 17px); }
  :root { --container-gutter: 16px; }
  body { font-size: 15px; }
  .site-topbar { height: auto; padding: 6px 0; }
  .site-topbar__inner { flex-wrap: wrap; gap: 6px 14px; }
  .site-topbar__date { flex-basis: 100%; margin-right: 0; font-size: 12px; }
  .site-topbar__links { margin-right: auto; }
  .site-logo__img { width: 112px; }
  .site-logo__tag { font-size: 11.5px; max-width: 120px; }
  .site-header__inner { justify-content: flex-start; gap: 10px; }
  .ticker-wrap { padding: 10px 0 16px; }
  .ticker { gap: 8px; }
  .ticker__label { padding: 0 9px; font-size: 11px; }
  .ticker__btns { display: none; }
  .hero { height: 330px; }
  .hero__body { left: 16px; right: 16px; bottom: 18px; gap: 7px; }
  .hero__title { font-size: 19px; }
  .hero__excerpt { display: none; }
  .hero__nav { top: 90px; }
  .hero__dots { right: 16px; bottom: 20px; }
  .hero-side ul { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .side-item { grid-template-columns: 112px minmax(0, 1fr); align-items: center; gap: 12px; }
  .side-item__thumb { aspect-ratio: 112 / 80; }
  .home-side { grid-template-columns: minmax(0, 1fr); }
  .sidebar { grid-template-columns: minmax(0, 1fr); }
  .ad-pair--mid { margin-top: 18px; }
  .ad-pair { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .ad-slot--half { min-height: 90px; }
  .lead { grid-template-columns: 124px minmax(0, 1fr); gap: 12px; }
  .lead__thumb { aspect-ratio: 124 / 92; }
  .lead .post-card__title { font-size: 15px; }
  .lead__body { gap: 8px; }
  .mini-grid { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .mini { grid-template-columns: 70px minmax(0, 1fr); }
  .post-card__title--xs { font-size: 13.5px; }
  .overlay-card--wide { aspect-ratio: 16 / 10; }
  .block__title { font-size: 15px; }
  .block__head { gap: 10px; padding-right: 10px; }
  .block__more { font-size: 11.5px; gap: 3px; }
  .block__icon { width: 42px; }
  .cat-hero { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .post-row { grid-template-columns: 112px minmax(0, 1fr); gap: 12px; padding: 14px 0; }
  .post-row__thumb { aspect-ratio: 112 / 90; }
  .post-row__excerpt { display: none; }
  .post-row__title { font-size: 15.5px; -webkit-line-clamp: 4; }
  .page-head__title { font-size: 22px; }
  .block__icon--lg { width: 52px; height: 38px; }
  .post-single__title { font-size: 24px; }
  .prose { font-size: 16.5px; }
  .related__grid { grid-template-columns: minmax(0, 1fr); }
  .related-card { grid-template-columns: 112px minmax(0, 1fr); align-items: center; gap: 12px; }
  .related-card__thumb { aspect-ratio: 112 / 80; }
  .page-single { padding: 22px 18px 24px; }
  .author-card { padding: 16px; gap: 14px; }
  .author-card__avatar { width: 56px; height: 56px; font-size: 26px; }
  .author-card__name { font-size: 20px; }
  .inline-search { max-width: none; }
  .site-footer__grid { grid-template-columns: minmax(0, 1fr); gap: 22px; padding-top: 26px; }
  .footer-brand p { max-width: none; }
  .back-top { right: 14px; bottom: 14px; }
  .breadcrumb [aria-current] span { max-width: 22ch; }
  .search-overlay { padding-top: 12vh; }
  .search-overlay__form { flex-wrap: wrap; }
  .search-overlay__form .btn { flex: 1; }
}

/* giảm chuyển động theo cài đặt hệ điều hành */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; transition-delay: 0s !important; }
  .js-reveal { opacity: 1 !important; transform: none !important; }
  .post-card:hover, .post-card.is-hover { transform: none; }
  .post-card:hover .thumb img { transform: none; }
}