/* GNB scroll / hover state */
#gnb {
  background-color: transparent;
}

/* 투명 배경 → logo.svg (화이트) */
#gnb .gnb-logo-white {
  display: block;
  opacity: 1;
}

#gnb .gnb-logo-or {
  display: none;
  opacity: 0;
}

/* 화이트 배경 → logo_or.svg (컬러): 스크롤 시에만 */
#gnb.is-scrolled {
  background-color: #ffffff;
  box-shadow: 0 1px 0 rgba(19, 19, 19, 0.06);
}

#gnb.is-scrolled .gnb-logo-white {
  display: none;
  opacity: 0;
}

#gnb.is-scrolled .gnb-logo-or {
  display: block;
  opacity: 1;
}

#gnb.is-scrolled .gnb-nav {
  color: #131313;
}

#gnb.is-scrolled .gnb-nav > .group > a:hover {
  opacity: 0.7;
}

/* Desktop GNB 하위메뉴 — 위에서 아래로 흘러내림
   clip-path는 안쪽 ul에만 적용: 잘린 영역은 pointer-events가 없어
   마우스를 패널로 내릴 때 :hover가 끊기는 문제를 막기 위함 */
.gnb-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 10;
  min-width: 100%;
  padding-top: 4px; /* 트리거 ↔ 패널 사이 호버 브릿지 */
  margin-top: -4px;
  pointer-events: none;
  transform: translateX(-50%);
}

.gnb-panel > ul {
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.group:hover > .gnb-panel,
.group:focus-within > .gnb-panel {
  pointer-events: auto;
}

.group:hover > .gnb-panel > ul,
.group:focus-within > .gnb-panel > ul {
  clip-path: inset(0);
}

/* Single button — left → right primary fill */
.btn-fill {
  --cta-fill: #628AD1;
  position: relative;
  z-index: 0;
  overflow: hidden;
  transition: color 0.2s ease;
}

.btn-fill::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-color: var(--cta-fill);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.14s linear;
}

.btn-fill:hover::before,
.btn-fill:active::before {
  transform: scaleX(1);
}

.btn-fill:hover,
.btn-fill:active {
  color: #ffffff;
}

.btn-fill .btn-fill-icon {
  position: relative;
  z-index: 1;
  transition: filter 0.14s ease;
}

.btn-fill:hover .btn-fill-icon,
.btn-fill:active .btn-fill-icon {
  filter: brightness(0) invert(1);
}

/* ---- 모바일 슬라이드 메뉴 ---- */
#mobileNav .border-line {
  border-color: rgba(19, 19, 19, 0.08);
}

#mobileNav .acc-panel {
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  pointer-events: none;
  transition: max-height 0.35s ease, visibility 0.35s;
}

#mobileNav .acc-panel.is-open {
  max-height: 640px;
  visibility: visible;
  pointer-events: auto;
}

#mobileNav [data-acc-toggle][aria-expanded="true"] .acc-chevron {
  transform: rotate(180deg);
}

/* 메뉴 열림: 헤더 화이트 (스크롤 상태와 동일) */
#gnb.gnb-menu-open {
  background-color: #ffffff;
  box-shadow: 0 1px 0 rgba(19, 19, 19, 0.06);
}

#gnb.gnb-menu-open .gnb-logo-white {
  display: none;
  opacity: 0;
}

#gnb.gnb-menu-open .gnb-logo-or {
  display: block;
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  #mobileNav .acc-panel {
    transition: none !important;
  }
}