/* header.css — дээд цэс, MENU, WhatsApp товч */
.site-header {
  position: sticky; top: 0; z-index: 30;
  height: var(--header-h);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  padding: 0 20px;
  background: #fff;
  border-bottom: 1px solid #e6e6e0;
}

/* MENU товч */
.menu-toggle {
  justify-self: start;
  display: flex; align-items: center; gap: 10px;
  background: none; border: none; cursor: pointer;
  font: inherit; font-weight: 700; font-size: 0.95rem;
  color: var(--charcoal);
}
.menu-icon, .menu-icon::before, .menu-icon::after {
  display: block; width: 20px; height: 2px;
  background: var(--altai-forest);
  position: relative;
}
.menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; }
.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; width: 14px; }

/* Лого. Брэндбүүк: дэлгэц дээр хамгийн бага өргөн 180px */
.logo img { display: block; width: 190px; height: auto; }

/* WhatsApp товч: брэндийн ногоон "pill", WhatsApp-ын ногоон дугуй дүрстэй */
.whatsapp-btn {
  justify-self: end;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 18px 6px 6px;
  border-radius: 999px;
  background: var(--altai-forest);
  color: var(--ivory);
  text-decoration: none;
  font-weight: 700; font-size: 0.9rem;
  letter-spacing: 0.01em;
  box-shadow: 0 6px 16px rgba(27, 94, 59, 0.25);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.whatsapp-btn:hover {
  background: #154b2f;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(27, 94, 59, 0.32);
}
.whatsapp-btn:focus-visible { outline: 3px solid var(--sand-gold); outline-offset: 3px; }
.whatsapp-icon {
  display: grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--whatsapp);
}

/* Guest portal товч + WhatsApp (menu.js нэг хайрцагт хийнэ) */
.header-actions { justify-self: end; display: flex; align-items: center; gap: 10px; }
.account-btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px;
  border: 1px solid #d9dcd4; border-radius: 999px; color: var(--charcoal);
  text-decoration: none; font-weight: 700; font-size: 0.88rem; white-space: nowrap;
}
.account-btn:hover { border-color: var(--altai-forest); color: var(--altai-forest); }
.account-btn svg { color: var(--altai-forest); }

/* MENU дарахад гарах хажуугийн цэс (гар утас, таблет). menu.js accordion болгож бөглөнө */
.side-menu {
  /* Header-ийн доор нээгдэнэ: MENU товч харагдсаар байж, дахин дарахад хаагдана */
  position: fixed; top: var(--header-h); left: 0; bottom: 0; z-index: 40;
  width: min(340px, 88vw);
  padding: 12px 24px 32px;
  background: var(--altai-forest);
  display: flex; flex-direction: column;
  overflow-y: auto; overscroll-behavior: contain;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}
.side-menu a { color: var(--ivory); text-decoration: none; }
.side-home,
.side-item summary {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  font-weight: 700; font-size: 1.15rem;
  color: var(--ivory);
  cursor: pointer;
  list-style: none;
}
.side-item summary::-webkit-details-marker { display: none; }
.side-item summary::after {
  content: "+";
  font-size: 1.4rem; font-weight: 400; line-height: 1;
  transition: transform 0.2s;
}
.side-item[open] summary::after { transform: rotate(45deg); }
.side-home.current,
.side-item summary.current,
.side-home:hover,
.side-item summary:hover { color: var(--sand-gold); }
.side-body { padding: 6px 0 16px; border-bottom: 1px solid rgba(255, 255, 255, 0.14); }
.side-group {
  margin: 12px 0 6px;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--sand-gold);
}
.side-body ul { list-style: none; padding: 0; margin: 0; }
.side-body li a { display: block; padding: 7px 0; font-size: 0.98rem; opacity: 0.92; }
.side-body li a:hover { opacity: 1; color: var(--sand-gold); }
.side-all { display: inline-block; margin-top: 12px; font-weight: 700; color: var(--sand-gold) !important; }
.menu-backdrop {
  position: fixed; inset: var(--header-h) 0 0; z-index: 35;
  background: rgba(31, 35, 35, 0.5);
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
body.menu-open .side-menu { transform: translateX(0); }
body.menu-open .menu-backdrop { opacity: 1; pointer-events: auto; }
/* Нээлттэй үед MENU дүрс X болно */
.menu-icon, .menu-icon::before, .menu-icon::after { transition: transform 0.25s, background 0.25s, top 0.25s; }
body.menu-open .menu-icon { background: transparent; }
body.menu-open .menu-icon::before { top: 0; transform: rotate(45deg); }
body.menu-open .menu-icon::after { top: 0; width: 20px; transform: rotate(-45deg); }

/* ===== Компьютерийн цэс + том цонх (mega menu, WeRoad шиг) ===== */
.main-nav { display: none; }

@media (min-width: 1024px) {
  .site-header { grid-template-columns: auto 1fr auto; gap: 24px; padding: 0 28px; }
  .menu-toggle { display: none; }
  .logo { justify-self: start; }
  .logo img { width: 180px; }
  .main-nav { display: block; justify-self: center; height: 100%; }
  .main-nav-list { display: flex; height: 100%; list-style: none; margin: 0; padding: 0; gap: 2px; }
  .main-nav-item { display: flex; }
  .main-nav-link {
    position: relative;
    display: flex; align-items: center;
    padding: 0 14px;
    font-weight: 700; font-size: 0.95rem;
    color: var(--charcoal);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s;
  }
  .main-nav-link::after {
    content: "";
    position: absolute; left: 14px; right: 14px; bottom: 18px;
    height: 2px; border-radius: 2px;
    background: var(--altai-forest);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.25s;
  }
  .main-nav-link:hover,
  .main-nav-item.is-open .main-nav-link,
  .main-nav-link.is-current { color: var(--altai-forest); }
  .main-nav-item.is-open .main-nav-link::after,
  .main-nav-link.is-current::after { transform: scaleX(1); }
  .main-nav-link:focus-visible { outline: 2px solid var(--sand-gold); outline-offset: -6px; border-radius: 8px; }

  .mega {
    position: absolute; top: 100%; left: 0; right: 0;
    width: min(1240px, calc(100% - 40px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr) 320px;
    min-height: 380px;
    border-radius: 0 0 16px 16px;
    background: #fff;
    box-shadow: 0 24px 48px rgba(31, 35, 35, 0.18);
    overflow: hidden;
    animation: mega-in 0.18s ease-out;
  }
  .mega[hidden] { display: none; }
  @keyframes mega-in { from { opacity: 0; transform: translateY(-6px); } }

  .mega-side { display: flex; flex-direction: column; padding: 22px 0 26px 22px; border-right: 1px solid #eceee7; }
  .mega-side ul { list-style: none; margin: 0; padding: 0; }
  .mega-group {
    width: 100%;
    display: flex; align-items: center; justify-content: space-between;
    padding: 13px 18px 13px 20px;
    border: 0; border-radius: 10px 0 0 10px;
    background: none;
    font: inherit; font-size: 0.98rem;
    color: var(--charcoal);
    text-align: left;
    cursor: pointer;
  }
  .mega-group svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
  .mega-group.is-active { background: #f2f3ee; font-weight: 700; color: var(--altai-forest); }
  .mega-group:focus-visible { outline: 2px solid var(--sand-gold); outline-offset: -2px; }
  .mega-all {
    margin: auto 0 0 20px; padding-top: 18px;
    font-weight: 700; color: var(--charcoal);
    text-decoration: underline; text-underline-offset: 4px;
  }
  .mega-all:hover { color: var(--altai-forest); }

  .mega-main { padding: 30px 36px; }
  .mega-links h3 { margin-bottom: 18px; font-size: 1.6rem; letter-spacing: -0.01em; color: var(--charcoal); }
  .mega-links ul {
    list-style: none; margin: 0; padding: 0;
    display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 4px 24px;
  }
  .mega-links a {
    display: inline-block; padding: 8px 0;
    color: #3c4340; text-decoration: none;
    transition: color 0.2s;
  }
  .mega-links a:hover { color: var(--altai-forest); text-decoration: underline; text-underline-offset: 4px; }

  .mega-photo { position: relative; background: #e9ece4; }
  .mega-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
}

/* Нарийн компьютер: WhatsApp зөвхөн дүрстэй, цэсний зай багасна */
@media (min-width: 1024px) and (max-width: 1279px) {
  .whatsapp-text { display: none; }
  .whatsapp-btn { padding: 6px; }
  .account-btn span { display: none; }
  .account-btn { padding: 8px; }
  .main-nav-link { padding: 0 10px; font-size: 0.9rem; }
  .main-nav-link::after { left: 10px; right: 10px; }
  .mega { grid-template-columns: 220px minmax(0, 1fr) 260px; }
}

/* Гар утас */
@media (max-width: 760px) {
  .site-header { padding: 0 12px; }
  .menu-toggle { font-size: 0; gap: 0; }
  .logo img { width: 150px; }
  .whatsapp-text { display: none; }
  .whatsapp-btn { padding: 6px; background: var(--whatsapp); box-shadow: 0 6px 16px rgba(37, 211, 102, 0.3); }
  .whatsapp-icon { width: 30px; height: 30px; }
  .account-btn span { display: none; }
  .account-btn { padding: 7px; }
  .header-actions { gap: 6px; }
}

/* Guest portal товч: зай багатай дэлгэцэд зөвхөн дүрс */
.whatsapp-btn { white-space: nowrap; }
@media (max-width: 1439px) {
  .account-btn span { display: none; }
  .account-btn { padding: 8px; }
  .whatsapp-text { display: none; }
  .whatsapp-btn { padding: 6px; }
}