/* Newve Clinic — Header (skinmdlab tone)
 * Single row: Logo | Nav (7 items + dropdown) | Book CTA
 * Sticky, white bg, minimal
 */

.nt-header {
  position: sticky;
  top: 0;
  z-index: var(--newve-z-header, 100);
  background: var(--newve-white);
  border-bottom: 1px solid var(--newve-border-soft, #eee);
}

.nt-header__inner {
  max-width: var(--newve-container-base, 1280px);
  margin: 0 auto;
  padding: 0 var(--newve-pad-desktop, 15px);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Logo */
.nt-header__logo {
  font-family: var(--newve-font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--newve-dark);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Nav */
.nt-header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nt-header__nav > a,
.nt-header__nav-item > a {
  font-size: 14px;
  font-weight: 500;
  color: var(--newve-black-03, #333);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--newve-radius-pill, 9999px);
  transition: background 150ms, color 150ms;
  white-space: nowrap;
}
.nt-header__nav > a:hover,
.nt-header__nav-item > a:hover {
  background: var(--newve-bg-soft, #fafafa);
  color: var(--newve-dark);
}

/* Dropdown */
.nt-header__nav-item--dropdown {
  position: relative;
}
.nt-header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--newve-white);
  border-radius: var(--newve-radius-md, 14px);
  box-shadow: var(--newve-shadow-md);
  padding: 12px 8px;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(4px);
  transition: all 200ms ease;
  z-index: 10;
}
.nt-header__nav-item--dropdown:hover .nt-header__dropdown,
.nt-header__nav-item--dropdown:focus-within .nt-header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nt-header__dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--newve-black-03, #333);
  text-decoration: none;
  border-radius: var(--newve-radius-sm, 6px);
  transition: background 150ms;
}
.nt-header__dropdown a:hover {
  background: var(--newve-bg-soft, #fafafa);
  color: var(--newve-primary);
}

/* Auth link (Sign In / My Account) */
.nt-header__auth {
  font-size: 14px;
  font-weight: 500;
  color: var(--newve-black-03, #333);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--newve-radius-pill, 9999px);
  transition: background 150ms, color 150ms;
  white-space: nowrap;
}
.nt-header__auth:hover {
  background: var(--newve-bg-soft, #fafafa);
  color: var(--newve-primary);
}

/* Book CTA */
.nt-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.nt-header__book {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  background: var(--newve-dark);
  color: var(--newve-white);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--newve-radius-pill, 9999px);
  text-decoration: none;
  transition: background 200ms;
}
.nt-header__book:hover {
  background: var(--newve-primary);
  color: var(--newve-white);
}

/* Burger (mobile) */
.nt-header__burger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
}
.nt-header__burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--newve-dark);
  border-radius: 1px;
  transition: all 200ms;
}

/* ─── Mobile ──────────────────────────────────────── */

@media (max-width: 991px) {
  .nt-header__nav,
  .nt-header__actions { display: none; }
  .nt-header__burger { display: flex; }
}

/* Mobile menu overlay */
.nt-mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--newve-white);
  transform: translateX(100%);
  transition: transform 300ms ease;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.nt-mobile-menu--open {
  transform: translateX(0);
}

.nt-mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--newve-border-soft, #eee);
}
.nt-mobile-menu__logo {
  font-family: var(--newve-font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--newve-dark);
}
.nt-mobile-menu__close {
  background: none;
  border: none;
  font-size: 28px;
  color: var(--newve-black-06, #666);
  cursor: pointer;
  padding: 4px 8px;
}

.nt-mobile-menu__nav {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.nt-mobile-menu__nav > a {
  padding: 14px 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--newve-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--newve-border-soft, #eee);
}
.nt-mobile-menu__sub {
  padding: 0 0 8px 16px;
}
.nt-mobile-menu__sub a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--newve-black-06, #666);
  text-decoration: none;
}

.nt-mobile-menu__cta {
  padding: 20px;
  border-top: 1px solid var(--newve-border-soft, #eee);
}
.nt-mobile-menu__cta .nt-btn {
  width: 100%;
  justify-content: center;
}

/* Language link (한국어 사이트 바로가기) — header top-right */
.nt-header__lang {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  color: var(--newve-black-06, #666);
  text-decoration: none;
  transition: color 0.2s;
  white-space: nowrap;
}
.nt-header__lang:hover { color: var(--newve-gold, #bda363); }
.nt-header__lang svg { display: block; }
.nt-mobile-menu__lang { color: var(--newve-gold, #bda363) !important; }