/* Shared header for SOTA — used on home + child pages.
   Vars are self-contained so this file works without style.css. */
:root {
  --anchor-scroll-offset: 32px;
}

html {
  scroll-padding-top: var(--anchor-scroll-offset);
}

[id] {
  scroll-margin-top: var(--anchor-scroll-offset);
}

.site-header {
  --hd-cyan: #37d5ff;
  --hd-line: rgba(94, 195, 255, 0.18);
  --hd-text: #d7ecff;
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(180deg, #051431 0%, #061a3d 100%);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--hd-line);
  font-family: "Inter", Arial, Helvetica, sans-serif;
}

.site-header * {
  box-sizing: border-box;
}

.navbar {
  width: min(1180px, calc(100% - 32px));
  height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
  line-height: 1;
  text-decoration: none;
}

.brand-logo {
  height: 38px;
  width: auto;
  display: block;
}

.brand-sub {
  color: #7fbaff;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex: 1;
}

.nav-menu a,
.language {
  color: var(--hd-text);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  text-decoration: none;
}

.language {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  user-select: none;
  outline: none;
}

/* Language switcher dropdown */
.language .caret {
  font-size: 0.6rem;
  transition: transform 0.2s ease;
}

.language.open .caret {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 140px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: #06214d;
  border: 1px solid var(--hd-line);
  border-radius: 10px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
  z-index: 60;
}

.language.open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu li {
  padding: 9px 12px;
  border-radius: 7px;
  color: var(--hd-text);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  white-space: nowrap;
}

.lang-menu li:hover {
  background: rgba(94, 195, 255, 0.14);
  color: #ffffff;
}

.lang-menu li.is-active {
  color: #ffffff;
  background: rgba(55, 213, 255, 0.18);
}

.nav-menu a {
  position: relative;
  padding: 10px 0;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  transform: scaleX(0);
  background: var(--hd-cyan);
  transition: transform 0.2s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  transform: scaleX(1);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #ffffff;
}

.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-self: stretch;
  align-items: center;
  padding-right: 12px;
}

.nav-dropdown::before {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  color: var(--hd-text);
  transform: translateY(-35%);
  transition: transform 0.18s ease, color 0.18s ease;
}

.nav-dropdown:hover::before,
.nav-dropdown:focus-within::before {
  color: #ffffff;
  transform: translateY(-35%) rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 80;
  width: min(280px, calc(100vw - 32px));
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 8px;
  padding: 14px;
  background: rgba(5, 21, 50, 0.98);
  border: 1px solid rgba(94, 195, 255, 0.22);
  border-radius: 8px;
  box-shadow: 0 24px 54px rgba(2, 12, 30, 0.42);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.nav-dropdown-menu a,
.nav-dropdown-menu .nav-dropdown-item {
  position: static;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 46px;
  padding: 11px 12px;
  border: 1px solid rgba(94, 195, 255, 0.12);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--hd-text);
  font-size: 0.76rem;
  font-weight: 800;
  line-height: 1.25;
  text-decoration: none;
  text-transform: none;
  white-space: normal;
}

.nav-dropdown-menu a::after {
  display: none;
}

.nav-dropdown-menu a:hover {
  color: #ffffff;
  background: rgba(55, 213, 255, 0.13);
  border-color: rgba(55, 213, 255, 0.32);
}

.nav-dropdown-menu .is-coming-soon {
  cursor: default;
  opacity: 0.48;
  filter: grayscale(0.35);
}

.nav-dropdown-menu .is-coming-soon em {
  flex: 0 0 auto;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #c7d7e8;
  font-size: 0.58rem;
  font-style: normal;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-panel {
  min-width: 0;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-toggle {
  position: relative;
  display: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: #ffffff;
  transform-origin: center;
  transition: transform 0.24s ease, opacity 0.18s ease;
}

.site-header.menu-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.menu-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.menu-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(142, 203, 255, 0.58);
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  gap: 6px;
  transition: transform 0.2s ease, background 0.2s ease;
}

.site-header .btn:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.12);
}

.site-header .btn .arrow {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.site-header .btn .arrow svg {
  width: 13px;
  height: 13px;
}

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 45;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  background: rgba(2, 12, 30, 0.46);
  backdrop-filter: blur(4px);
}

@media (max-width: 1100px) {
  @keyframes mobileMenuDown {
    0% {
      opacity: 0;
      transform: translateY(-26px) scaleY(0.96);
    }

    64% {
      opacity: 1;
      transform: translateY(7px) scaleY(1.02);
    }

    82% {
      transform: translateY(-3px) scaleY(0.995);
    }

    100% {
      opacity: 1;
      transform: translateY(0) scaleY(1);
    }
  }

  @keyframes mobileMenuUp {
    0% {
      opacity: 1;
      transform: translateY(0) scaleY(1);
    }

    100% {
      opacity: 0;
      transform: translateY(-24px) scaleY(0.96);
    }
  }

  @keyframes mobileOverlayIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  @keyframes mobileOverlayOut {
    from { opacity: 1; }
    to { opacity: 0; }
  }

  .navbar {
    position: relative;
    width: 100%;
    padding-inline: 16px 8px;
    gap: 16px;
  }

  .brand {
    flex: 0 1 auto;
    min-width: 0;
  }

  .nav-panel {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 2;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 18px;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    background: rgba(5, 21, 50, 0.98);
    border-top: 1px solid rgba(80, 172, 255, 0.18);
    box-shadow: 0 22px 48px rgba(2, 12, 30, 0.36);
    transform: translateY(-24px);
    transform-origin: top center;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* When the menu is fully closed, take the panel out of the layout entirely.
     Otherwise children like .nav-dropdown-menu re-assert pointer-events/visibility
     and the invisible (opacity:0) panel keeps intercepting taps over the page. */
  .site-header:not(.menu-open):not(.menu-closing) .nav-panel {
    display: none;
  }

  .nav-toggle {
    flex: 0 0 42px;
    display: block;
    margin-left: auto;
  }

  .site-header.menu-open,
  .site-header.menu-closing {
    background: rgba(5, 21, 50, 0.98);
  }

  .site-header.menu-open .navbar,
  .site-header.menu-closing .navbar {
    height: 72px;
    flex-wrap: nowrap;
    padding-bottom: 0;
  }

  .site-header.menu-open .nav-panel,
  .site-header.menu-closing .nav-panel {
    visibility: visible;
    pointer-events: auto;
  }

  .nav-menu {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-menu a {
    padding: 14px 4px;
    border-bottom: 1px solid rgba(80, 172, 255, 0.12);
  }

  .nav-dropdown {
    display: block;
    align-self: auto;
    padding-right: 0;
  }

  .nav-dropdown::before {
    display: none;
  }

  .nav-dropdown-toggle {
    display: block;
  }

  .nav-dropdown-menu {
    position: static;
    width: 100%;
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 8px 0 12px 14px;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .nav-dropdown:hover .nav-dropdown-menu,
  .nav-dropdown:focus-within .nav-dropdown-menu {
    transform: none;
  }

  .nav-dropdown-menu a,
  .nav-dropdown-menu .nav-dropdown-item {
    min-height: 42px;
    padding: 10px 12px;
    border-color: rgba(80, 172, 255, 0.12);
    background: rgba(255, 255, 255, 0.035);
  }

  .nav-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 4px 0;
  }

  .site-header.menu-open .nav-panel {
    opacity: 1;
    animation: mobileMenuDown 0.48s cubic-bezier(0.2, 0.9, 0.25, 1.1) both;
  }

  .site-header.menu-closing .nav-panel {
    animation: mobileMenuUp 0.28s ease-in both;
  }

  .site-header.menu-open + .nav-overlay,
  .site-header.menu-closing + .nav-overlay {
    visibility: visible;
    pointer-events: auto;
  }

  .site-header.menu-open + .nav-overlay {
    opacity: 1;
    animation: mobileOverlayIn 0.24s ease both;
  }

  .site-header.menu-closing + .nav-overlay {
    animation: mobileOverlayOut 0.24s ease both;
  }
}

/* === TẠM ẨN nav "AI Box" (desktop + mobile). Gỡ 2 dòng dưới để hiện lại. === */
.nav-dropdown:has(> .nav-dropdown-toggle[data-i18n="nav.products"]) { display: none; }