/*
  header-footer.css v2 — Minimal transparent→solid header, Carbon Black minimal footer.
  헤더: 좌 워드마크 / 중앙 Service·Project·Area / 우 문의하기 ↗. 히어로 위에서는 투명.
*/
.skip-link{
  position: absolute; top: -120px; left: 12px; z-index: 100;
  background: var(--carbon); color: var(--white); padding: 12px 18px;
  font-weight: 700; text-decoration: none; transition: top .18s ease-out;
}
.skip-link:focus{ top: 12px; }

/* ===== 헤더 ===== */
.site-header{
  position: fixed; top: 0; left: 0; right: 0; z-index: 40; height: 68px;
  display: flex; align-items: center; color: var(--white);
  background: transparent; border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, color .25s ease;
}
.site-header.is-scrolled, .site-header.is-solid{
  background: rgba(243,243,240,.96); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line); color: var(--ink);
}
.site-header__inner{ width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; }

.site-logo{ flex: none; display: flex; flex-direction: column; line-height: 1.05; text-decoration: none; color: inherit; }
.site-logo strong{ font-family: var(--font-mono); font-weight: 700; font-size: 13.5px; letter-spacing: .04em; }
.site-logo span{ font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .22em; color: var(--accent); text-transform: uppercase; margin-top: 2px; }

.site-nav{ display: none; }
@media (min-width: 900px){
  .site-nav{ display: flex; align-items: center; gap: 40px; }
  .site-nav a{ color: inherit; text-decoration: none; font-family: var(--font-mono); font-weight: 600; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; opacity: .92; }
  .site-nav a:hover{ opacity: 1; color: var(--accent); }
}

.site-header__cta{ flex: none; font-size: 13px; }
.site-header__cta-mobile{ flex: none; display: none; font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; text-decoration: none; color: inherit; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
@media (max-width: 480px){
  .site-header__cta{ display: none; }
  .site-header__cta-mobile{ display: inline-flex; }
}

.site-nav-toggle{ display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border: none; background: none; cursor: pointer; color: inherit; }
@media (min-width: 900px){ .site-nav-toggle{ display: none; } }
.site-nav-mobile{ display: none; position: fixed; inset: 0; z-index: 39; background: var(--carbon); color: var(--white); overflow-y: auto; }
.site-nav-mobile.is-open{ display: block; }
.site-nav-mobile ul{ list-style: none; margin: 0; padding: 120px 28px 40px; }
.site-nav-mobile li{ border-bottom: 1px solid var(--line-on-dark); }
.site-nav-mobile a{ display: flex; align-items: center; justify-content: space-between; padding: 20px 2px; color: var(--white); text-decoration: none; font-weight: 700; font-size: 22px; letter-spacing: -.01em; }
.site-nav-mobile .num-xl{ font-size: 13px; color: var(--accent); }
@media (min-width: 900px){ .site-nav-mobile{ display: none !important; } }

/* 히어로가 없는(짧은) 페이지는 헤더를 처음부터 solid로 시작 */
.site-header.is-solid-always{ background: rgba(243,243,240,.96); border-bottom-color: var(--line); color: var(--ink); }

/* ===== 푸터 — Carbon Black 미니멀 ===== */
.site-footer{ background: var(--carbon); color: #C7C9CA; }
.site-footer__top{ padding-block: 64px 40px; border-bottom: 1px solid var(--line-on-dark); }
.site-footer__word{ display: flex; flex-wrap: wrap; align-items: baseline; gap: 14px 20px; }
.site-footer__word strong{ font-family: var(--font-mono); font-size: clamp(28px,5vw,46px); font-weight: 700; letter-spacing: -.01em; color: var(--white); text-transform: uppercase; }
.site-footer__word span{ font-family: var(--font-mono); font-size: 13px; letter-spacing: .2em; color: var(--accent); text-transform: uppercase; }

.site-footer__mid{ padding-block: 40px; border-bottom: 1px solid var(--line-on-dark); display: grid; gap: 28px; grid-template-columns: 1fr; }
@media (min-width: 700px){ .site-footer__mid{ grid-template-columns: repeat(3, 1fr); } }
.site-footer__col h4{ font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; font-weight: 600; }
.site-footer__col ul{ list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer__col a{ color: #D6D7D8; text-decoration: none; font-size: 14.5px; }
.site-footer__col a:hover{ color: var(--white); }

.site-footer__biz{ padding-block: 22px; display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 0; }
.site-footer__biz span{ font-size: 11.5px; line-height: 1.6; color: #8A8D8F; white-space: nowrap; padding-right: 16px; border-right: 1px solid #34373A; }
.site-footer__biz span:last-child{ padding-right: 0; border-right: 0; }
.site-footer__bottom{ border-top: 1px solid var(--line-on-dark); }
.site-footer__bottom p{ margin: 0; padding-block: 14px; font-size: 11px; color: #6E7173; }

@media (max-width: 767.98px){
  /* 모바일: 워드마크/메뉴 인덱스는 숨기고 사업자정보만 가로 배치로 남겨 푸터 세로폭을 줄인다 */
  .site-footer__top, .site-footer__mid{ display: none; }
  .site-footer__biz{ gap: 4px 10px; padding-block: 16px; }
  .site-footer__biz span{ font-size: 10.5px; white-space: normal; padding-right: 10px; }
}

/* ===== 모바일 하단 고정 CTA ===== */
body{ padding-bottom: 68px; }
@media (min-width: 768px){ body{ padding-bottom: 0; } }
.mobile-cta-bar{
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; display: flex;
  height: 60px; background: var(--carbon); border-top: 1px solid var(--line-on-dark);
  transition: transform .25s ease;
}
.mobile-cta-bar.is-hidden{ transform: translateY(100%); }
.mobile-cta-bar__btn{ flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px; color: var(--white); text-decoration: none; font-weight: 700; font-size: 14px; letter-spacing: .02em; }
.mobile-cta-bar__btn + .mobile-cta-bar__btn{ border-left: 1px solid var(--line-on-dark); }
@media (min-width: 768px){ .mobile-cta-bar{ display: none; } }

@media (prefers-reduced-motion: reduce){
  .skip-link{ transition: none !important; }
  .mobile-cta-bar{ transition: none; }
  .site-header{ transition: none; }
}