/* ==========================================================================
   Đầu trang hai tầng (Luminous Vision) — khớp design HTML.
   .gpkm-dau-trang (sticky + kính mờ) khai ở base.css.
   ========================================================================== */

/* Ngăn margin âm của hero collapse qua <main>; skip-link nhảy đúng dưới header. */
.gpkm-noi-dung { display: flow-root; }

.gpkm-dau-trang__tren {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  min-height: 80px;
  padding-block: var(--sp-2);
}

.gpkm-dau-trang__giua { flex: 1; min-width: 0; }

.gpkm-logo {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-family: var(--font-tieu-de);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--rose-red);
  text-decoration: none;
  white-space: nowrap;
}

.gpkm-logo:hover { color: var(--primary); }

.gpkm-tim-kiem {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 36rem;
  margin-inline: auto;
  background: var(--off-white);
  border: 1px solid color-mix(in srgb, var(--line) 30%, transparent);
  border-radius: var(--bo-goc-vien-thuoc);
  padding-inline: var(--sp-3);
  gap: var(--sp-2);
}

.gpkm-tim-kiem__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--line-2);
}

.gpkm-tim-kiem__o {
  flex: 1;
  min-width: 0;
  min-height: 44px;
  padding: 0;
  background: transparent;
  border: 0;
  color: var(--ink-2);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.gpkm-tim-kiem__o::placeholder { color: var(--line-2); font-weight: 400; letter-spacing: 0; }
.gpkm-tim-kiem__o::-webkit-search-cancel-button { -webkit-appearance: none; }

.gpkm-tim-kiem__nut {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 2px;
  padding: 0;
  background: var(--rose-red);
  border: 0;
  border-radius: 50%;
  color: var(--surface);
  cursor: pointer;
  transition: background var(--nhanh) var(--easing);
}

.gpkm-tim-kiem__nut:hover { background: var(--primary); }
.gpkm-tim-kiem__nut svg { width: 16px; height: 16px; }

.gpkm-dau-trang__hanh-dong {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  flex-shrink: 0;
}

.gpkm-hd-icon {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 44px;
  min-height: 44px;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--nhanh) var(--easing);
}

.gpkm-hd-icon:hover { color: var(--rose-red); }

.gpkm-hd-icon svg { width: 22px; height: 22px; }

.gpkm-hd-icon__nhan {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gpkm-hd-icon__badge {
  position: absolute;
  top: 0;
  right: 0;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  background: var(--rose-red);
  border-radius: var(--bo-goc-vien-thuoc);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 700;
  line-height: 16px;
  text-align: center;
}

.gpkm-hd-icon--avatar {
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  background: var(--primary);
  border-radius: 50%;
  color: #fff;
}

.gpkm-hd-icon--avatar:hover { color: #fff; opacity: 0.9; }
.gpkm-hd-icon--avatar svg { width: 18px; height: 18px; }
.gpkm-hd-icon--avatar .gpkm-hd-icon__nhan { display: none; }

.gpkm-dau-trang__duoi { border-top: 1px solid color-mix(in srgb, var(--line) 10%, transparent); }

.gpkm-dieu-huong__ds {
  display: flex;
  justify-content: center;
  gap: var(--sp-6);
  min-height: 48px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.gpkm-dieu-huong__ds a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 4px;
  color: var(--ink-soft);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--nhanh) var(--easing), border-color var(--nhanh) var(--easing);
}

.gpkm-dieu-huong__ds a:hover,
.gpkm-dieu-huong__ds .current-menu-item > a,
.gpkm-dieu-huong__ds .current_page_item > a {
  color: var(--rose-red);
  border-bottom-color: var(--rose-red);
}

@media (max-width: 899px) {
  .gpkm-dau-trang__giua { order: 1; flex-basis: 100%; }
  .gpkm-hd-icon__nhan { display: none; }
}

@media (max-width: 767px) {
  .gpkm-dau-trang__tren { min-height: 64px; gap: var(--sp-3); }
  .gpkm-logo { font-size: 1.25rem; }
  .gpkm-dau-trang__hanh-dong { gap: var(--sp-2); }

  .gpkm-dieu-huong {
    max-width: none;
    padding-inline: 0;
  }

  .gpkm-dieu-huong__ds {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    gap: var(--sp-4);
    padding-inline-start: var(--sp-3);
    padding-inline-end: var(--sp-6);
    background: linear-gradient(to left, var(--kinh-nen), transparent var(--sp-6)) right / var(--sp-6) 100% no-repeat;
  }

  .gpkm-dieu-huong__ds > li {
    flex-shrink: 0;
    white-space: nowrap;
  }
}