/* ==========================================================================
   Component: datpro_header
   White corporate header — logo / primary nav / search + language.
   Reused on every page. Set data-dp-active="<route key>" on the <header>
   to mark the current page in the nav.
   ========================================================================== */

.dp-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.dp-header.is-stuck {
  border-bottom-color: var(--dp-border);
  box-shadow: var(--shadow-xs);
}

.dp-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--sp-4);
  min-height: var(--header-h);
}

/* ---------- Logo ---------------------------------------------------------- */

.dp-logo {
  display: inline-flex;
  align-items: center;
  flex: none;
}

.dp-logo img {
  width: auto;
  height: 46px;
}

@media (max-width: 767px) {
  .dp-logo img {
    height: 40px;
  }
}

/* ---------- Primary navigation -------------------------------------------- */

.dp-nav {
  justify-self: center;
}

.dp-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.75rem);
}

.dp-nav__link {
  position: relative;
  display: block;
  padding: 0.5rem 0.125rem;
  color: var(--dp-text-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}

.dp-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--dp-blue);
  transform: scaleX(0);
  transition: transform var(--dur) var(--ease);
}

.dp-nav__link:hover {
  color: var(--dp-blue);
}

/* "page" marks the current page; "true" marks the current *section* — an
   article sits under /tin-tuc/, so the News item is highlighted without
   claiming to be the page itself. Both get the same treatment. */
.dp-nav__link[aria-current="page"],
.dp-nav__link[aria-current="true"] {
  color: var(--dp-blue);
  font-weight: var(--fw-semibold);
}

.dp-nav__link[aria-current="page"]::after,
.dp-nav__link[aria-current="true"]::after {
  transform: scaleX(1);
}

/* ---------- Header actions ------------------------------------------------ */

.dp-header__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.dp-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  color: var(--dp-text-muted);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.dp-icon-btn:hover {
  background: var(--dp-surface);
  color: var(--dp-blue);
}

.dp-icon-btn svg {
  width: 20px;
  height: 20px;
}

.dp-header__divider {
  width: 1px;
  height: 22px;
  background: var(--dp-border);
}

/* ---------- Search -------------------------------------------------------- */

.dp-search {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  /* keeps the field aligned with .dp-container at every viewport */
  padding-inline: max(
    var(--container-pad),
    calc(50vw - var(--container-max) / 2 + var(--container-pad))
  );
  background: #fff;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
}

.dp-search.is-open {
  opacity: 1;
  visibility: visible;
}

.dp-search__field {
  flex: 1;
  min-width: 0;
  height: 44px;
  padding: 0 1rem;
  border: 1px solid var(--dp-border-strong);
  border-radius: var(--r-md);
  background: var(--dp-surface);
  color: var(--dp-text);
  font: inherit;
}

.dp-search__field::placeholder {
  color: var(--dp-text-subtle);
}

.dp-search__field:focus {
  outline: none;
  border-color: var(--dp-blue);
  background: #fff;
}

.dp-header__bar {
  position: relative;
}

/* ---------- Mobile trigger ------------------------------------------------ */

.dp-burger {
  display: none;
}

.dp-burger__box {
  position: relative;
  width: 20px;
  height: 14px;
}

.dp-burger__box span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}

.dp-burger__box span:nth-child(1) {
  top: 0;
}
.dp-burger__box span:nth-child(2) {
  top: 6px;
}
.dp-burger__box span:nth-child(3) {
  top: 12px;
}

.dp-burger[aria-expanded="true"] .dp-burger__box span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.dp-burger[aria-expanded="true"] .dp-burger__box span:nth-child(2) {
  opacity: 0;
}
.dp-burger[aria-expanded="true"] .dp-burger__box span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Mobile drawer ------------------------------------------------- */

.dp-drawer {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  background: #fff;
  padding: var(--sp-5) var(--container-pad) calc(var(--sp-8) + env(safe-area-inset-bottom));
  overflow-y: auto;
  overscroll-behavior: contain;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
    visibility var(--dur) var(--ease);
}

.dp-drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.dp-drawer__list {
  display: flex;
  flex-direction: column;
}

.dp-drawer__link {
  display: block;
  padding: 0.9375rem 0;
  border-bottom: 1px solid var(--dp-border);
  color: var(--dp-text);
  font-size: 1.0625rem;
  font-weight: var(--fw-medium);
}

.dp-drawer__link[aria-current="page"],
.dp-drawer__link[aria-current="true"] {
  color: var(--dp-blue);
  font-weight: var(--fw-semibold);
}

.dp-drawer__foot {
  margin-top: var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.dp-drawer__search {
  display: flex;
  gap: var(--sp-2);
}

body.dp-no-scroll {
  overflow: hidden;
}

/* ---------- Breakpoints --------------------------------------------------- */

@media (max-width: 1023px) {
  .dp-header__inner {
    grid-template-columns: auto 1fr;
  }

  .dp-nav,
  .dp-header__divider,
  .dp-header__search-toggle {
    display: none;
  }

  .dp-header__actions {
    justify-self: end;
  }

  .dp-burger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--r-sm);
    color: var(--dp-text);
  }
}

@media (min-width: 1024px) {
  .dp-drawer {
    display: none;
  }
}