/* ============================================================
   header.css - Header gradient + accent bar + drawer
   ============================================================ */

.site-header {
  /* Bảng màu ấm/lime (tham khảo: #f7fee7 -> #ecfccb -> #fafaf9, mực xanh đậm) */
  --hdr-ink: #1a2e05;
  --hdr-ink-soft: #365314;
  --hdr-accent: #4d7c0f;
  --hdr-orange: #4d7c0f;
  --white-60: rgba(54, 83, 20, 0.75);
  --white-45: rgba(54, 83, 20, 0.55);
  --white-15: rgba(77, 124, 15, 0.22);
  --white-10: rgba(77, 124, 15, 0.10);
  --white-08: rgba(77, 124, 15, 0.10);

  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(135deg, #f7fee7 0%, #ecfccb 40%, #fafaf9 100%);
  border-bottom: 1px solid #d9f99d;
  box-shadow: 0 4px 20px rgba(77, 124, 15, .06);
}

/* ---------- Main bar ---------- */
.site-mainbar {
  position: relative;
  /* Phải cao hơn .site-accent (z-index 1): nếu không, accent bar đè lên
     phần dropdown tràn xuống, cướp hover và làm menu con bị đóng khi hover xuống */
  z-index: 2;
}
/* Header cần wrap rộng hơn mặc định để nav + search + CTA không bị tràn */
.site-mainbar .wrap {
  max-width: 1400px;
}
.site-mainbar__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: .75rem;
  min-height: 70px;
  height: auto;
  padding-top: .35rem;
  padding-bottom: .35rem;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo__icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #a3e635, #4d7c0f);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 3px 14px rgba(77, 124, 15, .35);
  flex-shrink: 0;
  transition: transform .2s;
}
.site-logo:hover .site-logo__icon { transform: scale(1.06); }
.site-logo__icon img { border-radius: 11px; }
.site-logo__text {
  display: flex;
  flex-direction: column;
}
.site-logo__name {
  font-size: 19px;
  font-weight: 700;
  color: var(--hdr-ink);
  letter-spacing: -.4px;
  line-height: 1;
}
.site-logo__dot { color: var(--hdr-accent); }
.site-logo__tagline {
  font-size: 9px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--hdr-ink);
  margin-top: 3px;
  font-weight: 400;
}

/* Vertical divider */
.site-divider {
  width: 1px;
  height: 34px;
  background: var(--white-15);
  flex-shrink: 0;
}

/* ---------- Nav ---------- */
.main-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 0;
  min-width: 0;
  position: relative;
  z-index: 1;
  /* Cho phep wrap khi man hinh tablet (iPad) - khong cho nav tran vao logo */
  flex-wrap: wrap;
}
.main-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 6px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(26, 46, 5, .88);
  text-decoration: none;
  white-space: nowrap;
  transition: background .18s, color .18s;
  min-width: 0;
}
.main-nav__link:hover {
  background: var(--white-10);
  color: var(--hdr-ink);
}
.main-nav__item.is-active > .main-nav__link,
.main-nav__link.is-active {
  background: rgba(77, 124, 15, .14);
  color: var(--hdr-ink);
  font-weight: 600;
}
.main-nav__link.is-active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 2.5px;
  background: #4d7c0f;
  border-radius: 2px;
}
.main-nav__icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

/* Badge */
.main-nav__badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .4px;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 2px;
  flex-shrink: 0;
}
.main-nav__badge--new { background: var(--hdr-orange); color: #fff; }
.main-nav__badge--hot { background: #e63c3c; color: #fff; }

/* Dropdown caret */
.main-nav__item {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.main-nav__caret {
  width: 1rem;
  height: 2rem;
  margin-left: -.3rem;
  margin-right: .15rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--white-45);
  cursor: pointer;
  position: relative;
}
.main-nav__item.is-active > .main-nav__caret { color: var(--hdr-accent); }
.main-nav__caret::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -35%);
  border: 4px solid transparent;
  border-top-color: currentColor;
  transition: transform .16s;
}
.main-nav__item.is-open > .main-nav__caret::after {
  transform: translate(-50%, -70%) rotate(180deg);
}
.main-nav__item:hover .main-nav__caret,
.main-nav__caret:focus-visible { color: var(--hdr-ink); }

/* Dropdown panel */
.main-nav__sub {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  margin-top: .45rem;
  padding: .5rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .18), 0 2px 8px rgba(0, 0, 0, .10);
  border: .5px solid rgba(0, 0, 0, .06);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  /* Đóng có độ trễ: chuột băng qua khe hở không bị miss menu */
  transition: opacity .14s ease, transform .14s ease, visibility 0s linear .18s;
  z-index: 70;
}
/* invisible bridge to close gap */
.main-nav__sub::before {
  content: "";
  position: absolute;
  top: -.6rem;
  left: 0;
  right: 0;
  height: .65rem;
}
/* Mở tức thì (không delay); focus chỉ giữ menu khi focus bằng bàn phím,
   không giữ bằng focus do bấm chuột (tránh menu bị kẹt mở) */
.main-nav__item:hover > .main-nav__sub,
.main-nav__item:has(:focus-visible) > .main-nav__sub,
.main-nav__item.is-open > .main-nav__sub {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity .14s ease, transform .14s ease, visibility 0s linear 0s;
}
.main-nav__sub-all {
  color: var(--ocean-mid);
  font-size: .88rem;
  font-weight: 700;
  text-decoration: none;
  padding: .55rem .75rem .5rem;
  border-bottom: 1px solid #e2ecf2;
  margin-bottom: .25rem;
  transition: color .12s;
}
.main-nav__sub-all:hover { color: var(--hdr-ink); }
.main-nav__sub-link {
  color: var(--ocean);
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  padding: .55rem .75rem;
  border-radius: 8px;
  transition: background .15s, color .15s;
}
.main-nav__sub-link:hover,
.main-nav__sub-link.is-active {
  background: var(--ocean-light);
  color: var(--ocean-mid);
}

/* ---------- Right actions ---------- */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  position: relative;
  z-index: 10;
  margin-left: auto;
  padding-left: 16px;
}

/* Search */
.site-search {
  position: relative;
  z-index: 10;
}
.site-search__icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--white-45);
  pointer-events: none;
}
.site-search__input {
  width: 150px;
  height: 36px;
  background: rgba(255, 255, 255, .75);
  border: 1px solid var(--white-15);
  border-radius: 18px;
  padding: 0 14px 0 36px;
  font-size: 13px;
  font-family: inherit;
  color: var(--hdr-ink);
  outline: none;
  transition: width .2s, background .2s, border-color .2s, box-shadow .2s;
}
.site-search__input::placeholder { color: var(--white-45); }
.site-search__input:focus {
  width: 170px;
  background: #fff;
  border-color: rgba(77, 124, 15, .5);
  box-shadow: 0 0 0 3px rgba(77, 124, 15, .15);
}

/* CTA button */
.site-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 18px;
  background: #4d7c0f;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  border: none;
  border-radius: 18px;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(77, 124, 15, .2);
  transition: transform .2s, box-shadow .2s, background .2s;
  white-space: nowrap;
}
.site-cta:hover {
  background: #365314;
  transform: translateY(-2px);
  box-shadow: 0 5px 14px rgba(77, 124, 15, .28);
}
.site-cta svg { width: 15px; height: 15px; }

/* ---------- Hamburger (mobile) ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: .55rem .5rem;
  border: 1px solid var(--white-15);
  border-radius: 8px;
  background: var(--white-10);
  cursor: pointer;
}
.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--hdr-ink);
  transition: transform .2s, opacity .2s;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Accent bar ---------- */
.site-accent {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--white-08);
}
.site-accent .wrap {
  display: flex;
  align-items: center;
  gap: 0;
  height: 40px;
  overflow-x: auto;
  scrollbar-width: none;
}
.site-accent .wrap::-webkit-scrollbar { display: none; }
.site-accent__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  height: 100%;
  font-size: 12.5px;
  font-weight: 500;
  color: rgba(54, 83, 20, .9);
  text-decoration: none;
  white-space: nowrap;
  border-right: 1px solid var(--white-08);
  transition: color .18s, background .18s;
}
.site-accent__link:first-child { border-left: 1px solid var(--white-08); }
.site-accent__link:hover {
  color: var(--hdr-accent);
  background: var(--white-10);
}
.site-accent__link--highlight { color: var(--hdr-accent); font-weight: 600; }

/* ---------- Responsive ---------- */
/* An search tren man hinh < 1200px de nav khong bi de len */
@media (max-width: 1200px) {
  .site-search { display: none; }
}

/* Giua 1101-1280: nav desktop gon hon cho laptop/nho */
@media (min-width: 1101px) and (max-width: 1280px) {
  .main-nav { gap: 4px; }
  .main-nav__link {
    padding: 6px 4px;
    font-size: 12px;
    gap: 3px;
  }
  .main-nav__icon { width: 13px; height: 13px; }
  .main-nav__badge { display: none; }
  .main-nav__caret { width: .7rem; margin-left: -.15rem; }
}

/* iPad Pro 13" doc (1024px), tablet, mobile: drawer thay nav day du */
@media (max-width: 1100px) {
  .site-divider { display: none; }
  .main-nav { display: none; }
  .site-search { display: none; }
  .site-accent { display: none; }

  .nav-toggle { display: flex; }

  /* drawer nav (inline) */
  .main-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: .5rem 1rem .9rem;
    background: linear-gradient(135deg, #3f6212 0%, #4d7c0f 50%, #3f6212 100%);
    box-shadow: 0 18px 28px rgba(26, 46, 5, .25);
    z-index: 50;
  }
  .main-nav.is-open .main-nav__item {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
  }
  /* Nen dang mo = xanh dam -> chu/icon phai sang de doc duoc */
  .main-nav.is-open .main-nav__link {
    flex: 1;
    padding: .65rem .6rem;
    color: #f0fce0;
    background: transparent;
    white-space: normal;
  }
  .main-nav.is-open .main-nav__link:hover {
    background: rgba(255, 255, 255, .1);
    color: #fff;
  }
  .main-nav.is-open .main-nav__item.is-active > .main-nav__link,
  .main-nav.is-open .main-nav__link.is-active {
    background: rgba(255, 255, 255, .12);
    color: #fff;
  }
  .main-nav.is-open .main-nav__link.is-active::after {
    background: #a3e635;
    left: .6rem;
    transform: none;
    width: 18px;
  }
  .main-nav.is-open .main-nav__icon {
    color: #d9f99d;
  }
  .main-nav.is-open .main-nav__caret {
    width: 2.4rem;
    height: 2.4rem;
    margin-left: 0;
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 6px;
    color: #e6f2e8;
  }
  .main-nav.is-open .main-nav__item.is-open > .main-nav__caret {
    color: #fff;
    background: rgba(255, 255, 255, .1);
  }
  .main-nav.is-open .main-nav__badge--hot {
    background: #f87171;
    color: #450a0a;
  }
  .main-nav.is-open .main-nav__badge--new {
    background: #a3e635;
    color: #1a2e05;
  }
  .main-nav.is-open .main-nav__sub {
    position: static;
    display: none;
    width: 100%;
    margin: .15rem 0 .4rem;
    padding: .35rem;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(0, 0, 0, .22);
    box-shadow: none;
    border-radius: 8px;
    border: 0;
  }
  .main-nav.is-open .main-nav__sub::before { display: none; }
  .main-nav.is-open .main-nav__item.is-open > .main-nav__sub { display: flex; }
  .main-nav.is-open .main-nav__sub-all {
    color: #f0fce0;
    border-bottom-color: rgba(255, 255, 255, .2);
  }
  .main-nav.is-open .main-nav__sub-link { color: #e6f2e8; }
  .main-nav.is-open .main-nav__sub-link:hover,
  .main-nav.is-open .main-nav__sub-link.is-active {
    background: rgba(255, 255, 255, .16);
    color: #fff;
  }
}

@media (max-width: 580px) {
  .site-cta span,
  .site-cta { padding: 0 12px; font-size: 12px; }
  .site-logo__tagline { display: none; }
  .site-mainbar__inner { min-height: 60px; gap: .75rem; }
  .site-logo__icon { width: 36px; height: 36px; font-size: 18px; border-radius: 9px; }
  .site-logo__name { font-size: 16px; }
}