/* Nav — see design-specs/shared-layout.md for full spec */

/* ---------- Logo: brand red on the white nav, white over a dark hero.
   Ships as two SVGs because an <img>-embedded SVG can't be recoloured from the page. ---------- */
.nav-logo__light { display: none; }
body.hero-overlay .nav-logo__dark { display: none; }
body.hero-overlay .nav-logo__light { display: block; }

/* ---------- Overlay variant: the nav floats over a full-bleed hero.
   Set ViewData["HeroOverlay"] on the page. Used by Home and Liên hệ. ---------- */
body.hero-overlay .nav-desktop,
body.hero-overlay .nav-mobile {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
}
body.hero-overlay .nav-main,
body.hero-overlay .nav-m-main {
  background: transparent;
}
body.hero-overlay .nav-main-inner {
  border-bottom-color: rgba(255, 255, 255, 0.4);
}
body.hero-overlay .nav-m-main-inner {
  border-bottom-color: rgba(255, 255, 255, 0.3);
}
body.hero-overlay .nav-menu .item span,
body.hero-overlay .nav-lang,
body.hero-overlay .nav-icons .icon-btn,
body.hero-overlay .nav-m-hamburger,
body.hero-overlay .nav-m-icons .icon-btn {
  color: #fff;
}
body.hero-overlay .nav-menu .item.is-open {
  background: rgba(255, 255, 255, 0.2); /* literal Figma value (node 923:17080) for the overlay nav */
}

.nav-announcement {
  height: 40px;
  background: var(--color-brand-red);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}
.nav-announcement span {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  line-height: 24px;
  color: var(--color-white);
  letter-spacing: 0.4px;
}

.nav-subbar {
  height: 48px;
  background: var(--color-grey-50);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
}
.nav-subbar-inner {
  width: 100%;
  max-width: var(--content-max-width);
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-subbar-left,
.nav-subbar-right {
  display: flex;
  align-items: center;
}
.nav-subbar-left { gap: 12px; }
.nav-subbar-right { gap: 40px; }
.nav-subbar-left span,
.nav-subbar-right a {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  line-height: 24px;
  color: var(--color-black);
  letter-spacing: 0.4px;
  text-decoration: none;
}
.nav-subbar-left img { width: 24px; height: 24px; }

.nav-desktop { position: relative; } /* anchors the mega-menu dropdown panels */
.nav-main {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
}
.nav-main-inner {
  width: 100%;
  max-width: var(--content-max-width);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  border-bottom: 1px solid var(--color-grey-500);
}
.nav-logo { width: 48px; height: 48px; }
.nav-menu { display: flex; align-items: center; gap: 16px; }
.nav-menu .item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px 4px 8px;
  border-radius: var(--radius-sm);
  border: none;
  background: none;
  cursor: pointer;
}
.nav-menu .item span {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  line-height: 24px;
  color: var(--color-black);
  letter-spacing: 0.4px;
}
.nav-menu .chevron { width: 16px; height: 16px; }
.nav-icons { display: flex; align-items: center; gap: 16px; }
.nav-icons .icon-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
}
.nav-icons .icon-btn img { width: 18.67px; height: 18.67px; }
.nav-cart-btn { position: relative; text-decoration: none; }
.nav-cart-badge {
  position: absolute; top: -4px; right: -6px; min-width: 16px; height: 16px; padding: 0 3px;
  border-radius: 8px; background: var(--color-brand-red); color: #fff; font-size: 10px; line-height: 16px;
  text-align: center; font-family: var(--font-body); font-weight: 600;
}
.nav-lang {
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  line-height: 24px;
  color: var(--color-black);
  text-decoration: none;
}
.nav-lang .en { opacity: 0.5; }

/* Mobile nav */
.nav-m-announcement {
  height: 32px;
  background: var(--color-brand-red);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}
.nav-m-announcement span {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 13px;
  line-height: 16px;
  color: var(--color-white);
}

.nav-m-main {
  height: 60px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-m-main-inner {
  width: 100%;
  border-bottom: 1.5px solid var(--color-grey-50);
  padding: 4px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-m-hamburger {
  width: 64px;
  height: 28px;
  display: flex;
  align-items: center;
  background: none;
  border: none;
  padding: 0;
}
.nav-m-hamburger img { width: 28px; height: 28px; }
.nav-m-logo { width: 36px; height: 36px; }
.nav-m-icons { display: flex; align-items: center; gap: 8px; }
.nav-m-icons .icon-btn {
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  padding: 0;
}

/* Mobile off-canvas drawer (reuses desktop menu item list) */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: none;
}
.nav-drawer.is-open { display: block; }
.nav-drawer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
}
.nav-drawer__panel {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 320px;
  max-width: 85vw;
  background: var(--color-white);
  padding: 16px 20px 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}
.nav-drawer__panel a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  line-height: 20px;
  color: var(--color-black);
  text-decoration: none;
}
.nav-drawer__close {
  align-self: flex-end;
  background: none;
  border: none;
  font-size: 24px;
  width: 44px;
  height: 44px;
  cursor: pointer;
}

/* ---------- Drawer accordion (mobile route into the mega-menu links) ---------- */
.nav-drawer__group { border-bottom: 1px solid var(--color-grey-200); }
.nav-drawer__group-toggle {
  width: 100%;
  min-height: 52px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font: 500 16px/20px var(--font-body);
  color: var(--color-black);
  text-align: left;
}
.nav-drawer__group-toggle .chevron { transition: transform .2s ease; flex-shrink: 0; }
.nav-drawer__group-toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }

.nav-drawer__sub { display: flex; flex-direction: column; padding: 0 0 12px 12px; }
.nav-drawer__sub-title {
  margin: 12px 0 4px;
  font: 500 13px/16px var(--font-body);
  color: var(--color-grey-500);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.nav-drawer__sub a {
  min-height: 44px;
  display: flex;
  align-items: center;
  font-weight: 400;
}
.nav-drawer__see-all { color: var(--color-brand-red) !important; font-weight: 500 !important; }

.nav-drawer__links { display: flex; flex-direction: column; padding-top: 8px; }
.nav-drawer__links a { min-height: 44px; display: flex; align-items: center; }

@media (prefers-reduced-motion: reduce) {
  .nav-drawer__group-toggle .chevron { transition: none; }
}

@media (min-width: 768px) {
  .nav-mobile { display: none; }
}
@media (max-width: 767.98px) {
  .nav-desktop { display: none; }
}

/* ---------- Mega-menu dropdowns — see Figma node 923:17080 ("Nav desktop") ---------- */
.mega-menu-wrap { position: absolute; top: 168px; left: 0; right: 0; z-index: 50; display: flex; justify-content: center; }
.mega-menu {
  display: none;
  width: 1440px;
  max-width: calc(100% - 48px);
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.15);
  overflow: hidden;
}
.mega-menu__columns { display: flex; gap: 40px; padding: 40px; flex: 1; }
.mega-menu__column { display: flex; flex-direction: column; gap: 8px; width: 200px; flex-shrink: 0; }
.mega-menu__column-title { font-family: var(--font-display); font-size: 24px; line-height: 56px; color: #000; margin: 0; }
.mega-menu__links { display: flex; flex-direction: column; gap: 16px; list-style: none; margin: 0; padding: 0; }
.mega-menu__links a {
  font-family: var(--font-body); font-weight: 500; font-size: 16px; line-height: 20px;
  color: var(--color-text-default); text-decoration: none;
}
.mega-menu__links a:hover { color: var(--color-brand-red); }

.mega-menu__visual {
  position: relative; width: 554px; flex-shrink: 0;
  background-color: var(--color-grey-100);
  background-size: cover; background-position: center; background-repeat: no-repeat;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-end;
  padding: 10px 10px 40px;
  overflow: hidden;
}
.mega-menu__see-all {
  position: relative; z-index: 1;
  background: rgba(0, 0, 0, 0.35); color: #fff; border-radius: var(--radius-sm); padding: 8px 20px;
  font-family: var(--font-body); font-weight: 700; font-size: 15px; line-height: 24px;
  letter-spacing: 0.4px; text-decoration: none; align-self: center;
  backdrop-filter: blur(2px);
}
.mega-menu__see-all:hover { background: rgba(0, 0, 0, 0.55); }

/* Active pill highlight — Figma's dropdown demo (923:17080) is built for the transparent/white-text
   nav variant (rgba(255,255,255,.2) highlight, reads well over a hero image); on the solid white
   nav bar used everywhere else, a light grey highlight is substituted so it stays visible
   (see body.hero-overlay override in home.css for the literal Figma value). */
.nav-menu .item.is-open { background: var(--color-grey-50); }

/* Hover-to-reveal, pure CSS (no JS required) — the matching mega-menu panel opens while the
   trigger pill OR the panel itself is hovered/focused (so the mouse can travel down into the
   dropdown without it closing). JS (site.js) only adds click support for touch/keyboard users. */
@media (min-width: 992px) {
  .nav-desktop:has([data-menu-trigger="qua-tet"]:hover) [data-menu-panel="qua-tet"],
  .nav-desktop:has([data-menu-panel="qua-tet"]:hover) [data-menu-panel="qua-tet"],
  .nav-desktop:has([data-menu-trigger="qua-tet"].is-open) [data-menu-panel="qua-tet"] { display: flex; }

  .nav-desktop:has([data-menu-trigger="qua-trung-thu"]:hover) [data-menu-panel="qua-trung-thu"],
  .nav-desktop:has([data-menu-panel="qua-trung-thu"]:hover) [data-menu-panel="qua-trung-thu"],
  .nav-desktop:has([data-menu-trigger="qua-trung-thu"].is-open) [data-menu-panel="qua-trung-thu"] { display: flex; }

  .nav-desktop:has([data-menu-trigger="qua-tang-theo-dip"]:hover) [data-menu-panel="qua-tang-theo-dip"],
  .nav-desktop:has([data-menu-panel="qua-tang-theo-dip"]:hover) [data-menu-panel="qua-tang-theo-dip"],
  .nav-desktop:has([data-menu-trigger="qua-tang-theo-dip"].is-open) [data-menu-panel="qua-tang-theo-dip"] { display: flex; }

  .nav-desktop:has([data-menu-trigger="san-pham-chon-loc"]:hover) [data-menu-panel="san-pham-chon-loc"],
  .nav-desktop:has([data-menu-panel="san-pham-chon-loc"]:hover) [data-menu-panel="san-pham-chon-loc"],
  .nav-desktop:has([data-menu-trigger="san-pham-chon-loc"].is-open) [data-menu-panel="san-pham-chon-loc"] { display: flex; }
}