/* ══════════════════════════════════════════════════════════════
   zlgoon clone — header.css
   고정 헤더: 히어로 위 투명+흰색 → 스크롤 후 흰 배경+진색 (JS .is-scrolled)
   ══════════════════════════════════════════════════════════════ */

#header { position: relative; }

#hd {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 5.2rem;
  z-index: 9999;
  background-color: transparent;
  transition: background-color 0.35s ease;
}
#hd .hd-wrap { height: 100%; }

/* 로고: 흰/검 두 벌을 준비해 상태별 스왑 */
.hd-logo { line-height: 0; }
.hd-logo a { display: inline-block; line-height: 0; }
.hd-logo .logo-img { width: 7rem; height: auto; display: block; }
.hd-logo .logo-dark { display: none; }
#hd.is-scrolled { background-color: #FFFFFF; }
#hd.is-scrolled .logo-white { display: none; }
#hd.is-scrolled .logo-dark { display: block; }

/* GNB */
#gnb { margin-left: auto; }
#gnb .navbar-nav { display: flex; align-items: center; }
#gnb .nav-item { position: relative; margin: 0 2rem; }
#gnb .nav-item:last-child { margin-right: 0; }
#gnb .nav-item > a {
  display: block;
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.04rem;
  line-height: 5.2rem;
  color: #FFFFFF;
  white-space: nowrap;
  transition: color 0.35s ease;
}
#hd.is-scrolled #gnb .nav-item > a { color: #111111; }

/* 드롭다운 depth (데스크톱: 아이템 호버 시 흰 패널) */
#gnb .depth {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 0.6rem);
  min-width: 11em;
  padding: 1.2rem 1.6rem;
  background: #FFFFFF;
  border-radius: 0.8rem;
  box-shadow: 0 0.8rem 2.4rem rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
#gnb .nav-item:hover .depth,
#gnb .nav-item:focus-within .depth {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
#gnb .depth li + li { margin-top: 0.4rem; }
#gnb .depth li a {
  display: block;
  font-size: 1.15rem;
  font-weight: 500;
  color: #4B4B4B;
  padding: 0.5rem 0.4rem;
  white-space: nowrap;
  text-align: center;
}
#gnb .depth li a:hover { color: var(--color-primary); }

.closeNavBtn { display: none; }
.btn-depth { display: none; }
.js-mn { display: none; }

/* ── 모바일 (≤1024): 흰 배경 고정 헤더 + 슬라이드 메뉴 ── */
@media (max-width: 1024px) {
  #hd {
    background-color: #FFFFFF;
    height: 5.6rem;
  }
  #hd .logo-white { display: none; }
  #hd .logo-dark { display: block; }
  #hd .logo-img { width: 6.4rem; }

  .js-mn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.55rem;
    width: 2.6rem;
    height: 2.6rem;
  }
  .js-mn span {
    display: block;
    width: 100%;
    height: 0.2rem;
    border-radius: 0.2rem;
    background: #111111;
  }

  #gnb {
    position: fixed;
    top: 0;
    right: 0;
    width: min(78%, 34rem);
    height: 100vh;
    height: 100dvh;
    background: #FFFFFF;
    padding: 7rem 2.4rem 3rem;
    transform: translateX(105%);
    transition: transform 0.35s ease;
    overflow-y: auto;
    box-shadow: -1rem 0 3rem rgba(0, 0, 0, 0.08);
  }
  body.nav-open #gnb { transform: translateX(0); }
  body.nav-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 9998;
  }

  .closeNavBtn {
    display: block;
    position: absolute;
    top: 1.6rem;
    right: 2.4rem;
    font-size: 2rem;
    line-height: 1;
    color: #111111;
  }
  #gnb .navbar-nav { display: block; }
  #gnb .nav-item { margin: 0; border-bottom: 1px solid var(--color-grey-3); }
  #gnb .nav-item > a {
    line-height: 6.4rem;
    color: #111111;
    font-size: 1.5rem;
  }
  .btn-depth {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: 4.4rem;
    height: 6.4rem;
    font-size: 1.6rem;
    color: #919191;
  }
  #gnb .depth {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    box-shadow: none;
    padding: 0 0 1.6rem 1.2rem;
    min-width: 0;
    display: none;
  }
  #gnb .nav-item.open .depth { display: block; }
  #gnb .depth li a { text-align: left; font-size: 1.35rem; color: #4B4B4B; }
}