/* =============================================================
   responsive.css — Дэлгэцийн хэмжээст тохируулга
   Breakpoints: 1080 (нэвтрэх цэс), 900 (таблет), 620 (мобайл)
   ============================================================= */

/* ===== Том дэлгэц — жижиг тохируулга ====================== */
@media (max-width: 1200px) {
  .nav-link { padding-inline: .65rem; font-size: .88rem; }
}

/* ===== ТАБЛЕТ / БАГА ЛАПТОП — цэсийг мобайл болгох ======== */
@media (max-width: 1080px) {
  :root { --header-h: 70px; }

  .nav-toggle { display: block; }

  .nav-menu {
    position: fixed;
    top: 0; right: 0;
    width: min(380px, 86vw);
    height: 100vh;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: calc(var(--header-h) + 1rem) 1.2rem 2rem;
    box-shadow: -20px 0 60px rgba(20,19,56,.2);
    transform: translateX(100%);
    transition: transform .38s var(--ease);
    overflow-y: auto;
    z-index: 995;
  }
  .nav-menu.is-open { transform: translateX(0); }

  .nav-item { border-bottom: 1px solid var(--line); }
  .nav-link {
    justify-content: space-between;
    padding: 1rem .4rem;
    font-size: 1rem;
    width: 100%;
  }
  .nav-link::after { display: none; }
  .nav-link .caret { opacity: .8; }
  .nav-item.is-expanded .nav-link .caret { transform: rotate(180deg); }

  /* Dropdown / mega-г accordion болгох */
  .dropdown, .mega {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-top: none;
    border-radius: 0;
    padding: 0 0 .8rem .4rem;
    width: 100%;
    display: none;
    grid-template-columns: 1fr;
    background: transparent;
  }
  .nav-item.is-expanded > .dropdown,
  .nav-item.is-expanded > .mega { display: block; transform: none; }
  /* Гар утсан дээр товшиход :hover наалддаг тул компьютерийн дүрэм ажиллаж,
     цэсийг translateX(-50%)-аар зүүн тийш түлхэж алга болгодог байсан.
     Энд байрлалын бүх шилжилтийг тэглэнэ. */
  .nav-item:hover .dropdown,
  .nav-item:hover .mega,
  .nav-item:focus-within .dropdown,
  .nav-item:focus-within .mega { opacity: 1; visibility: visible; transform: none; }
  .mega { gap: 1rem; }
  .mega__feature { display: none; }
  .dropdown a, .mega__col a { padding: .55rem .4rem; font-weight: 600; }
  .mega__col h5 { margin-top: .6rem; }

}

/* ===== ТАБЛЕТ layout ==================================== */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat { border-bottom: 1px solid rgba(255,255,255,.14); }
  .stat:nth-last-child(-n+2) { border-bottom: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .mega { width: min(560px, 90vw); grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  :root { --space-7: 4.5rem; --space-6: 3.5rem; }
  .split { grid-template-columns: 1fr; gap: 2.5rem; }
  .split .split__media { order: -1; }
  .leaders__slide { grid-template-columns: 1fr; gap: 2.5rem; }
  .leaders__slide .leaders__media { order: -1; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-cta .container { flex-direction: column; align-items: flex-start; text-align: left; }

  /* Нарийн дэлгэцэд page-hero-г нэг багана болгож, зургийн коллажийг нуана */
  .page-hero .container { display: block; }
  .page-hero__collage { display: none; }
}

/* ===== МОБАЙЛ ========================================== */
@media (max-width: 620px) {
  :root { --header-h: 64px; }

  h1 { font-size: clamp(2.1rem, 8vw, 2.8rem); }
  .section { padding-block: 3.2rem; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .stat-strip { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,.14); }
  .stat:last-child { border-bottom: none; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom .container { flex-direction: column; text-align: center; }

  .hero { min-height: auto; padding-block: 1rem; }
  .hero__inner { padding-block: 3rem; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
  .hero__stats { gap: 1.4rem 2rem; }
  /* Мөнгөн урамшуулал — дүн дээрээ, тайлбар доороо */
  .reward { flex-direction: column; align-items: flex-start; text-align: left; }

  /* Давхар диплом — хоёр карт дээр доор нь давхарлана */
  .diploma-pair { flex-direction: column; align-items: center; }
  .diploma { max-width: 100%; width: 100%; }

  /* Жижиг дэлгэц дээр сумууд текстийг халхлахгүйн тулд жижигрэнэ */
  .hero__arrow { width: 38px; height: 38px; }
  .hero__arrow svg { width: 17px; height: 17px; }

  .btn { width: 100%; justify-content: center; }
  .footer-cta .btn, .nav-actions .btn { width: auto; }

  .pillar { grid-template-columns: 1fr; gap: .6rem; }
  .step { grid-template-columns: 1fr; text-align: left; }
  .event { grid-template-columns: 1fr; text-align: left; }
  .event__date { justify-self: start; display: inline-flex; gap: .5rem; align-items: baseline; }

  .lightbox__prev { left: .6rem; }
  .lightbox__next { right: .6rem; }
}

@media (max-width: 380px) {
  .brand { gap: .55rem; }
  .brand__sub { font-size: .6rem; letter-spacing: .02em; }
  .brand__crest { width: 38px; height: auto; }
}

@media (max-width: 330px) {
  .brand__sub { font-size: .54rem; }
  .brand__crest { width: 34px; height: auto; }
}

/* ===== Хэвлэх ========================================== */
@media print {
  .site-header, .site-footer, .back-to-top, .page-loader,
  .footer-cta, .nav-toggle { display: none !important; }
  body { color: #000; }
  .section--navy, .page-hero, .hero { background: #fff !important; color: #000 !important; }
}

/* ===== Хөдөлгөөн багасгах хүсэлт ======================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}