/* TÚ AN CLINIC — HEADER CSS */

/* ══ CHECKBOX TRICK ══ */
.nav-toggle-input { display: none; }

/* ══ DESKTOP HEADER ══ */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  background: rgba(249,250,250,.9);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: height .3s, background .3s, border-color .3s, box-shadow .3s;
}
#site-header.scrolled {
  height: 58px;
  background: rgba(249,250,250,.98);
  border-color: rgba(91,170,175,.15);
  box-shadow: 0 2px 20px rgba(26,46,50,.07);
}

/* ── Logo ── */
.hdr-logo {
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-decoration: none;
  user-select: none;
  flex-shrink: 0;
}
.hdr-logo-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 4px;
  color: var(--ink-900);
  transition: color .25s;
}
.hdr-logo-sub {
  font-size: 8px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--teal-400);
}
.hdr-logo:hover .hdr-logo-name { color: var(--teal-500); }

/* ── Desktop Nav ── */
.hdr-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: center;
}
.hdr-nav-link {
  font-size: 12px;
  letter-spacing: .8px;
  color: var(--ink-500);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
  transition: color .25s;
  white-space: nowrap;
}
.hdr-nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--teal-400);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s;
}
.hdr-nav-link:hover,
.hdr-nav-link.active { color: var(--ink-900); }
.hdr-nav-link:hover::after,
.hdr-nav-link.active::after { transform: scaleX(1); transform-origin: left; }

/* Dropdown item không có underline hover */
.hdr-dropdown-item::after { display: none !important; }

/* ── CTA ── */
.hdr-cta {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--teal-500);
  border: 1px solid var(--teal-400);
  padding: 10px 24px;
  text-decoration: none;
  flex-shrink: 0;
  transition: background .25s, color .25s;
}
.hdr-cta:hover { background: var(--teal-400); color: #fff; }

/* ── Hamburger ── */
.hdr-ham {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  padding: 8px;
  cursor: pointer;
  flex-shrink: 0;
}
.hdr-ham span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--ink-900);
  transition: transform .35s, opacity .35s;
  transform-origin: center;
  pointer-events: none;
}
.nav-toggle-input:checked ~ header .hdr-ham span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle-input:checked ~ header .hdr-ham span:nth-child(2) { opacity: 0; }
.nav-toggle-input:checked ~ header .hdr-ham span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ══ DROPDOWN DESKTOP ══ */
.hdr-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}
.hdr-dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}
.hdr-caret {
  font-size: 9px;
  display: inline-block;
  transition: transform .25s;
  line-height: 1;
  opacity: .7;
}
.hdr-dropdown.open .hdr-caret { transform: rotate(180deg); }

.hdr-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 190px;
  background: rgba(249,250,250,.98);
  border: 1px solid rgba(91,170,175,.2);
  box-shadow: 0 8px 32px rgba(26,46,50,.13);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s, visibility .2s, transform .2s;
  z-index: 300;
}
.hdr-dropdown.open .hdr-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
/* Mũi tên nhỏ trỏ lên */
.hdr-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top: none;
  border-bottom-color: rgba(91,170,175,.2);
}
.hdr-dropdown-menu::after {
  content: '';
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top: none;
  border-bottom-color: rgba(249,250,250,.98);
}

.hdr-dropdown-item {
  display: block !important;
  padding: 12px 20px !important;
  font-size: 12px !important;
  letter-spacing: .6px;
  color: var(--ink-500) !important;
  border-bottom: 1px solid rgba(91,170,175,.08);
  white-space: nowrap;
  transition: background .15s, color .15s, padding-left .15s;
}
.hdr-dropdown-item:last-child { border-bottom: none; }
.hdr-dropdown-item:hover {
  background: var(--teal-xl, #E4F4F5);
  color: var(--ink-900) !important;
  padding-left: 26px !important;
}

/* ══ MOBILE NAV ══ */
#mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 199;
  background: var(--bg-base, #F9FAFA);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .35s, visibility .35s;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding-top: 70px;
  padding-bottom: 32px;
}
.nav-toggle-input:checked ~ #mobile-nav {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 198;
  cursor: pointer;
}
.nav-toggle-input:checked ~ .nav-overlay { display: block; }

.mob-close {
  position: absolute;
  top: 20px; right: 5%;
  width: 44px; height: 44px;
  font-size: 22px;
  color: var(--ink-500, #4A6A70);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color .25s, transform .25s;
  user-select: none;
}
.mob-close:hover { color: var(--ink-900); transform: rotate(90deg); }

.mob-link {
  display: block;
  width: 100%;
  text-align: center;
  font-family: var(--font-serif, 'Cormorant Garamond', serif);
  font-size: clamp(17px, 3.8vw, 24px);
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--ink-900, #1A2E32);
  text-decoration: none;
  padding: 11px 5%;
  border-bottom: 1px solid rgba(91,170,175,.12);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .4s, transform .4s, color .25s;
  cursor: pointer;
}
.mob-link:first-of-type { border-top: 1px solid rgba(91,170,175,.12); }
.nav-toggle-input:checked ~ #mobile-nav .mob-link { opacity: 1; transform: none; }
.nav-toggle-input:checked ~ #mobile-nav .mob-link:nth-child(2) { transition-delay: .05s; }
.nav-toggle-input:checked ~ #mobile-nav .mob-link:nth-child(3) { transition-delay: .10s; }
.nav-toggle-input:checked ~ #mobile-nav .mob-link:nth-child(4) { transition-delay: .15s; }
.nav-toggle-input:checked ~ #mobile-nav .mob-link:nth-child(5) { transition-delay: .20s; }
.nav-toggle-input:checked ~ #mobile-nav .mob-link:nth-child(6) { transition-delay: .25s; }
.nav-toggle-input:checked ~ #mobile-nav .mob-link:nth-child(7) { transition-delay: .30s; }
.mob-link:hover { color: var(--teal-400, #5BAAAF); }

.mob-cta {
  display: inline-block;
  margin-top: 32px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #fff;
  background: var(--teal-400, #5BAAAF);
  padding: 15px 48px;
  text-decoration: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .4s .32s, transform .4s .32s, background .25s;
}
.nav-toggle-input:checked ~ #mobile-nav .mob-cta { opacity: 1; transform: none; }
.mob-cta:hover { background: var(--teal-500, #3D8A8F); }

/* ══ MOBILE DROPDOWN (submenu) ══ */
.mob-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .4s, transform .4s;
}
.nav-toggle-input:checked ~ #mobile-nav .mob-group { opacity: 1; transform: none; }

.mob-group-toggle {
  border-bottom: 1px solid rgba(91,170,175,.12) !important;
  display: flex !important;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
}
.mob-caret {
  font-size: 13px;
  display: inline-block;
  transition: transform .3s;
  opacity: .6;
}
.mob-group.open .mob-caret { transform: rotate(180deg); }

.mob-submenu {
  width: 100%;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  background: rgba(91,170,175,.04);
}
.mob-group.open .mob-submenu { max-height: 600px; }

.mob-sublink {
  font-size: clamp(13px, 3vw, 17px) !important;
  padding: 9px 5% !important;
  color: var(--teal-500, #3D8A8F) !important;
  border-top: none !important;
  letter-spacing: 1.5px;
}
.mob-sublink:last-child { border-bottom: 1px solid rgba(91,170,175,.12) !important; }

/* ════════════
   TAP BAR
════════════ */
:root {
  --tb-height: 72px;
  --tb-icon-size: 24px;
  --tb-text-size: 8px;
  --ink-300: #7A9DA3;
  --ink-900: #1A2E32;
  --teal-400: #5BAAAF;
  --teal-500: #3D8A8F;
}
.tb-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
  text-decoration: none;
  color: var(--ink-300);
  font-size: var(--tb-text-size);
  font-weight: 600;
  letter-spacing: .7px;
  text-transform: uppercase;
  -webkit-tap-highlight-color: transparent;
  transition: color .18s ease;
  user-select: none;
}
.tb-item svg, .tb-item .tb-zalo {
  width: var(--tb-icon-size);
  height: var(--tb-icon-size);
  min-width: var(--tb-icon-size);
  min-height: var(--tb-icon-size);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.tb-item svg {
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}
.tb-item svg[fill="currentColor"] { fill: currentColor; stroke: none; }
.tb-zalo {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -1px;
  color: currentColor;
}
.tb-item span { line-height: 1; white-space: nowrap; }
.tb-item:hover { color: var(--teal-500); }
.tb-item:active { opacity: .75; }

/* Mobile tap bar */
#tap-bar-mobile {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-height: 72px;
  padding: 8px 6px;
  box-sizing: border-box;
  background: rgba(249,250,250,.97);
  border-top: 1px solid rgba(91,170,175,.12);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  transform: translateY(0);
  -webkit-transform: translateY(0);
  will-change: transform;
  contain: layout style paint;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
#tap-bar-mobile .tb-item { height: 100%; padding: 0; margin: 0; justify-content: center; }
#tap-bar-mobile .tb-item svg, #tap-bar-mobile .tb-item .tb-zalo { width: 24px; height: 24px; }
#tap-bar-mobile .tb-item span { font-size: 8px; letter-spacing: .8px; }

/* Desktop tap bar */
#tap-bar-desktop {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 150;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 0;
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(91,170,175,.18);
  border-radius: 999px;
  box-shadow: 0 8px 40px rgba(91,170,175,.15), 0 2px 8px rgba(26,46,50,.06);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}
#tap-bar-desktop .tb-item { width: 68px; padding: 10px 8px; border-radius: 999px; }
#tap-bar-desktop .tb-item:hover { background: rgba(91,170,175,.07); color: var(--teal-500); }
#tap-bar-desktop .tb-item::before {
  content: attr(data-tip);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--ink-900);
  color: #fff;
  font-size: 9px;
  letter-spacing: 1px;
  padding: 5px 10px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
#tap-bar-desktop .tb-item:hover::before { opacity: 1; }

/* ════════════
   RESPONSIVE
════════════ */
@media (max-width: 768px) {
  .hdr-nav, .hdr-cta { display: none !important; }
  .hdr-ham { display: flex !important; }
  #site-header { padding: 0 16px; }
  #tap-bar-mobile { display: flex; }
  #tap-bar-desktop { display: none !important; }
  body { padding-bottom: 72px; }
}
@media (min-width: 769px) {
  .hdr-nav, .hdr-cta { display: flex; }
  .hdr-ham { display: none !important; }
  #tap-bar-mobile { display: none !important; }
  #tap-bar-desktop { display: flex; }
}


/* Fix: Bridge gap giua toggle va menu de chuot khong bi mat */
.hdr-dropdown { /* hdr-dropdown-bridge */ }
.hdr-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: -10px;
  right: -10px;
  height: 14px;
  background: transparent;
}


/* ══════════════════════════════════════════════════════
   MEGA MENU — thêm vào header.css
   Dùng khi sub-menu có sub-sub (chia cột tự động)
   Sub = tiêu đề cột (đậm), Sub-sub = items trong cột
   ══════════════════════════════════════════════════════ */

/* Trigger: .hdr-mega wraps the whole thing */
.hdr-mega { position: relative; }

/* Panel: full-width bar bên dưới header */
.hdr-mega-panel {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 480px;
  background: var(--color-header-bg, #fff);
  border: 1px solid rgba(0,0,0,.08);
  box-shadow: 0 8px 32px rgba(0,0,0,.10);
  padding: 24px 28px;
  z-index: 200;
}

/* Mở khi hover hoặc .open */
.hdr-mega:hover .hdr-mega-panel,
.hdr-mega.open .hdr-mega-panel {
  display: block;
}

/* Grid cột — tự co/giãn theo số cột */
.hdr-mega-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0 32px;
}

/* Đường phân cách giữa các cột */
.hdr-mega-col {
  border-right: 1px solid rgba(0,0,0,.06);
  padding-right: 24px;
  padding-bottom: 4px;
}
.hdr-mega-col:last-child {
  border-right: none;
  padding-right: 0;
}

/* Tiêu đề cột — in đậm, màu chính */
.hdr-mega-col-title {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-primary, #5BAAAF);
  text-decoration: none;
  padding: 0 0 10px 0;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(0,0,0,.07);
  transition: opacity .15s;
}
.hdr-mega-col-title:hover { opacity: .7; }

/* Items trong cột — nhỏ hơn, nhạt hơn */
.hdr-mega-item {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text, #1A2E32);
  text-decoration: none;
  padding: 6px 0;
  letter-spacing: .2px;
  border-bottom: 1px solid rgba(0,0,0,.04);
  transition: color .15s, padding-left .15s;
  opacity: .75;
}
.hdr-mega-item:last-child { border-bottom: none; }
.hdr-mega-item:hover {
  color: var(--color-primary, #5BAAAF);
  padding-left: 4px;
  opacity: 1;
}

/* ── MOBILE: col-title dạng bold trong accordion ── */
.mob-col-title {
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-primary, #5BAAAF) !important;
}

/* ==============================================
   MEGA MENU
   Sub = tieu de cot (in hoa, mau chinh)
   Sub-sub = items trong cot
   ============================================== */

.hdr-mega { position: relative; }

.hdr-mega-panel {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid rgba(0,0,0,.08);
  box-shadow: 0 8px 32px rgba(0,0,0,.10);
  padding: 24px 28px 20px;
  z-index: 200;
  white-space: nowrap;
}

.hdr-mega:hover .hdr-mega-panel,
.hdr-mega.open  .hdr-mega-panel { display: flex; }

.hdr-mega-grid {
  display: flex;
  gap: 0;
  align-items: flex-start;
}

.hdr-mega-col {
  min-width: 160px;
  padding: 0 28px 0 0;
  margin-right: 28px;
  border-right: 1px solid rgba(0,0,0,.07);
  flex-shrink: 0;
}
.hdr-mega-col:last-child {
  border-right: none;
  padding-right: 0;
  margin-right: 0;
}

.hdr-mega-col-title {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--color-primary, #5BAAAF);
  text-decoration: none;
  padding-bottom: 10px;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(0,0,0,.08);
  white-space: nowrap;
}
.hdr-mega-col-title:hover { opacity: .75; }

.hdr-mega-item {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text, #1A2E32);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid rgba(0,0,0,.04);
  opacity: .8;
  transition: color .15s, padding-left .12s, opacity .15s;
  white-space: nowrap;
}
.hdr-mega-item:last-child { border-bottom: none; }
.hdr-mega-item:hover {
  color: var(--color-primary, #5BAAAF);
  padding-left: 5px;
  opacity: 1;
}

.mob-col-title {
  font-size: 10px !important;
  font-weight: 600 !important;
  letter-spacing: 1.2px !important;
  text-transform: uppercase !important;
  color: var(--color-primary, #5BAAAF) !important;
}


/* ── MOBILE NAV COMPACT OVERRIDE (patch) ── */
.mob-group-toggle {
  padding: 13px 5% !important;
}
.mob-submenu .mob-link {
  padding: 9px 5% !important;
  font-size: clamp(13px, 3vw, 17px) !important;
}
/* Max-height submenu cao hon de chua 8+ items */
.mob-group.open .mob-submenu { max-height: 1200px; }

/* Mob CTA gap nho hon */
.mob-cta { margin-top: 16px; }

/* Mobile nav: first-of-type border fix sau khi them padding-top */
#mobile-nav .mob-link:first-of-type,
#mobile-nav .mob-group:first-of-type { border-top: none; }