/* ============================================================
   공통 레이아웃 — 헤더·GNB·드로어·서브 페이지 틀·푸터
   ============================================================ */
/* 스티키 푸터 — 아래 .site-footer 의 margin-top:auto 가 실제로 동작하려면
   body 가 세로 flex 이고 최소 높이가 화면 높이여야 한다. 이게 없으면 auto 가 0 으로
   계산돼서, 내용이 짧은 페이지(게시판 목록 등)는 푸터 아래가 흰 여백으로 남는다.
   (이 파일은 공개 페이지 전용 — 관리자는 tokens.css + admin.css 만 쓴다) */
body { display: flex; flex-direction: column; min-height: 100vh; }

.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 1000; padding: 8px 12px; background: var(--color-primary-deep); color: #fff; border-radius: var(--radius-sm); }
.skip-link:focus { left: 8px; }

/* ── 헤더 ─────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  background: rgba(255,255,255,0.92); backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner { display: flex; align-items: center; height: 100%; gap: var(--space-6); }
.logo { display: inline-flex; align-items: center; text-decoration: none !important; flex-shrink: 0; }
.logo img { height: 36px; width: auto; }

.gnb { flex: 1; display: flex; justify-content: center; height: 100%; }
.gnb-list { display: flex; height: 100%; }
.gnb-item { position: relative; height: 100%; display: flex; align-items: center; }
.gnb-link {
  display: inline-flex; align-items: center; height: 100%; padding: 0 clamp(10px, 1.2vw, 18px);
  color: var(--color-heading); font-weight: var(--weight-semibold); font-size: 0.95rem; text-decoration: none !important;
  position: relative; white-space: nowrap;
}
.gnb-link::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--color-accent); transform: scaleX(0); transition: transform var(--duration) var(--ease); }
.gnb-item:hover .gnb-link::after, .gnb-item.is-active .gnb-link::after, .gnb-item:focus-within .gnb-link::after { transform: scaleX(1); }
.gnb-item.is-active .gnb-link { color: var(--color-primary); }

.gnb-panel {
  position: absolute; top: calc(100% - 1px); left: 50%; transform: translateX(-50%) translateY(6px);
  min-width: 220px; padding: 10px; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: opacity var(--duration) var(--ease), transform var(--duration) var(--ease), visibility 0s linear var(--duration);
}
.gnb-item:hover .gnb-panel, .gnb-item:focus-within .gnb-panel, .gnb-item.is-open .gnb-panel { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); transition-delay: 0s; }
.gnb-panel > ul > li > a { display: block; padding: 8px 12px; border-radius: var(--radius-sm); color: var(--color-text); font-size: 0.9rem; font-weight: var(--weight-medium); white-space: nowrap; }
.gnb-panel a:hover { background: var(--color-accent-soft); color: var(--color-accent-ink); text-decoration: none; }
.gnb-panel-sub { padding: 0 0 4px 12px; border-left: 2px solid var(--color-border); margin: 0 0 4px 16px; }
.gnb-panel-sub a { display: block; padding: 5px 10px; font-size: 0.85rem; color: var(--color-text-muted); border-radius: var(--radius-sm); white-space: nowrap; }

.header-tools { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.header-sitemap { font-size: 0.85rem; color: var(--color-text-muted); }
.hamburger { display: none; width: 44px; height: 44px; padding: 10px; background: none; border: 0; border-radius: var(--radius-sm); flex-direction: column; justify-content: center; gap: 5px; }
.hamburger span { display: block; height: 2px; background: var(--color-heading); border-radius: 2px; transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease); }

@media (max-width: 1080px) {
  .gnb, .header-sitemap { display: none; }
  .hamburger { display: flex; }
  .header-inner { justify-content: space-between; }
}
@media (max-width: 480px) { .header-tools .btn { display: none; } }

/* ── 드로어 (모바일 메뉴) ───────────────────────────────────── */
.drawer { position: fixed; inset: 0; z-index: 200; }
.drawer[hidden] { display: none; }
.drawer-backdrop { position: absolute; inset: 0; background: rgba(7, 26, 51, 0.55); }
.drawer-panel { position: absolute; top: 0; right: 0; bottom: 0; width: min(360px, 88vw); background: #fff; box-shadow: var(--shadow-lg); display: flex; flex-direction: column; animation: drawer-in 0.25s var(--ease); }
@keyframes drawer-in { from { transform: translateX(100%); } to { transform: translateX(0); } }
.drawer-head img { height: 30px; width: auto; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 12px 12px 20px; border-bottom: 1px solid var(--color-border); }
.drawer-close { width: 44px; height: 44px; border: 0; background: none; font-size: 1.75rem; line-height: 1; color: var(--color-text-muted); border-radius: var(--radius-sm); }
.drawer-nav { overflow-y: auto; padding: 8px 12px 24px; }
.drawer-group summary { list-style: none; cursor: pointer; padding: 14px 8px; font-weight: var(--weight-semibold); color: var(--color-heading); display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--color-border); }
.drawer-group summary::-webkit-details-marker { display: none; }
.drawer-group summary::after { content: "+"; color: var(--color-text-subtle); font-weight: 400; font-size: 1.25rem; }
.drawer-group[open] summary::after { content: "–"; }
.drawer-group ul { padding: 6px 0 10px; }
.drawer-group li a { display: block; padding: 10px 16px; color: var(--color-text); font-size: 0.95rem; border-radius: var(--radius-sm); }
.drawer-group li ul { padding: 0 0 4px 16px; }
.drawer-group li li a { color: var(--color-text-muted); font-size: 0.875rem; padding: 8px 16px; }
.drawer-group li a:hover { background: var(--color-accent-soft); text-decoration: none; }
.drawer-link { display: block; padding: 14px 8px; color: var(--color-accent-ink); font-weight: var(--weight-medium); border-bottom: 1px solid var(--color-border); }
body.drawer-open { overflow: hidden; }

/* ── 관리자 미리보기 띠 (닫힌 메뉴) ─────────────────────────── */
.closed-banner { background: #fff4d6; color: #7a4b00; border-bottom: 1px solid #f3d38a; padding: 10px var(--gutter); font-size: var(--text-caption); text-align: center; }
.closed-banner a { color: #7a4b00; text-decoration: underline; margin-left: 6px; }
/* 관리자 로그인 상태에서만 뜨는 "내용 수정" 링크 (layout.html) */
.edit-content-link { position: fixed; right: 16px; bottom: 16px; z-index: 50; padding: 9px 14px; border-radius: 999px; background: var(--color-primary); color: #fff; font-size: var(--text-caption); font-weight: var(--weight-semibold); box-shadow: var(--shadow-md); text-decoration: none; opacity: 0.92; }
.edit-content-link:hover { opacity: 1; color: #fff; text-decoration: none; }

/* ── 플래시 위치 ───────────────────────────────────────────── */
.flash-wrap { padding-top: var(--space-4); }

/* ── 서브 페이지 틀 ───────────────────────────────────────── */
.sub-hero {
  --sh-angle: 112deg; --sh-from: #06375a; --sh-mid: var(--color-primary-dark); --sh-to: #0b86c9;
  padding: clamp(26px, 3.4vw, 40px) 0 clamp(24px, 3vw, 34px);
  color: #fff; position: relative; overflow: hidden;
  background: linear-gradient(var(--sh-angle), var(--sh-from) 0%, var(--sh-mid) 46%, var(--sh-to) 100%);
}
/* 섹션별 차이는 그라데이션 각도·양끝 색만 — 브랜드 파랑 안에서만 움직여 한 사이트로 읽히게 한다 */
.sub-hero--company     { --sh-angle: 106deg; --sh-from: #04304f; }
.sub-hero--business    { --sh-angle: 118deg; --sh-to: #2094da; }
.sub-hero--information { --sh-angle: 100deg; --sh-from: #06405f; --sh-to: #1a9ad5; }
.sub-hero--regulation  { --sh-angle: 124deg; --sh-from: #052e4c; }
.sub-hero--news        { --sh-angle: 110deg; --sh-to: #1d90d0; }
.sub-hero--notice      { --sh-angle: 116deg; --sh-from: #06385c; }
.sub-hero--qna         { --sh-angle: 104deg; --sh-to: #2099dd; }

.sub-hero::after { content: ""; position: absolute; right: -8%; top: -60%; width: 44%; height: 200%; background: radial-gradient(closest-side, rgba(255,255,255,0.14), transparent); pointer-events: none; }
/* 메인 히어로와 같은 해도 격자 — 글자 쪽은 마스크로 지운다 */
.sub-hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(100deg, transparent 24%, #000 60%);
  mask-image: linear-gradient(100deg, transparent 24%, #000 60%);
}
/* 섹션 글리프 — 빈 오른쪽을 채우고 어느 구역인지 알려준다 */
.sub-hero-mark {
  position: absolute; right: clamp(8px, 4vw, 64px); top: 50%; transform: translateY(-50%);
  width: clamp(76px, 9vw, 120px); color: rgba(255,255,255,0.14); pointer-events: none;
}
.sub-hero-mark svg { display: block; width: 100%; height: auto; stroke-width: 0.7; }

.sub-hero-inner { position: relative; display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4) var(--space-8); flex-wrap: wrap; }
.sub-hero .eyebrow { color: rgba(255,255,255,0.78); }
.sub-hero h1 { color: #fff; font-size: var(--text-h1); margin-top: 4px; }
.sub-hero .breadcrumb { margin-top: 0; padding-bottom: 5px; }
@media (max-width: 720px) {
  .sub-hero-mark { width: 72px; right: -6px; opacity: 0.75; }
  .sub-hero .breadcrumb { padding-bottom: 0; }
}
.breadcrumb { margin-top: var(--space-4); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; font-size: var(--text-caption); color: rgba(255,255,255,0.8); }
.breadcrumb li + li::before { content: "›"; margin-right: 6px; opacity: 0.6; }
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb [aria-current] { color: #fff; }

.sub-body { display: grid; grid-template-columns: var(--side-nav-w) minmax(0, 1fr); gap: clamp(28px, 4vw, 56px); padding: clamp(28px, 4vw, 48px) var(--gutter) clamp(40px, 5vw, 56px); }
.side-nav { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
.side-nav-title { margin: 0 0 var(--space-3); padding: 0 0 var(--space-3); border-bottom: 2px solid var(--color-primary); font-weight: var(--weight-bold); color: var(--color-heading); font-size: var(--text-h3); }
.side-nav > ul > li > a { display: block; padding: 10px 12px; border-radius: var(--radius-sm); color: var(--color-text); font-weight: var(--weight-medium); font-size: 0.95rem; }
.side-nav > ul > li.is-active > a { background: var(--color-accent-soft); color: var(--color-primary); }
.side-nav a:hover { background: var(--color-surface-sunken); text-decoration: none; }
.side-nav li ul { margin: 2px 0 6px 12px; padding-left: 10px; border-left: 2px solid var(--color-border); }
.side-nav li li a { display: block; padding: 7px 10px; font-size: 0.875rem; color: var(--color-text-muted); border-radius: var(--radius-sm); }
.side-nav li li.is-active a { color: var(--color-accent-ink); font-weight: var(--weight-semibold); }
.sub-content { min-width: 0; }
.side-nav > .side-nav-children { display: none; }  /* 모바일 칩 스트립의 두 번째 줄 — 아래 미디어쿼리에서 켠다 */

@media (max-width: 900px) {
  .sub-body { grid-template-columns: minmax(0, 1fr); gap: var(--space-6); }  /* 1fr = minmax(auto,1fr) → 칩 스트립이 컬럼을 넓힘 */
  .side-nav { position: static; min-width: 0; margin: 0 calc(-1 * var(--gutter)); padding: 0 var(--gutter); }
  .side-nav-title { display: none; }
  .side-nav > ul { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; scroll-snap-type: x proximity; scroll-padding-inline: var(--gutter); }
  .side-nav > ul::-webkit-scrollbar { display: none; }
  .side-nav > ul > li { flex-shrink: 0; scroll-snap-align: start; }
  .side-nav > ul > li > a { padding: 10px 16px; border: 1px solid var(--color-border-strong); border-radius: var(--radius-full); font-size: 0.875rem; white-space: nowrap; }
  .side-nav > ul > li.is-active > a { border-color: var(--color-accent); }
  .side-nav li ul { display: none; }
  /* 현재 항목의 하위 메뉴: 위 스트립과 구분되게 작고 채워진 칩 (선택자는 .side-nav > ul 규칙보다 우선하도록 클래스 2개) */
  .side-nav > .side-nav-children { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; padding-bottom: 0; overflow: visible; }
  .side-nav > .side-nav-children > li > a { padding: 8px 14px; border: 0; background: var(--color-surface-alt); color: var(--color-text-muted); font-size: 0.8125rem; }
  .side-nav > .side-nav-children > li.is-active > a { background: var(--color-accent-soft); color: var(--color-primary); font-weight: var(--weight-semibold); }
}

/* ── 사이트맵 ───────────────────────────────────────────── */
.sitemap { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-8); padding: var(--space-10) var(--gutter) var(--section-gap); }
.sitemap h2 { font-size: var(--text-h3); padding-bottom: var(--space-2); border-bottom: 2px solid var(--color-primary); margin-bottom: var(--space-3); }
.sitemap h2 a { color: var(--color-heading); }
.sitemap li a { display: block; padding: 6px 0; color: var(--color-text); }
.sitemap li li a { padding-left: 14px; color: var(--color-text-muted); font-size: 0.9rem; }

/* ── 에러 ──────────────────────────────────────────────── */
.error-page { padding: var(--space-20) var(--gutter); text-align: center; }
.error-page h1 { font-size: var(--text-h2); margin-bottom: var(--space-6); }

/* ── 푸터 (두 줄, 낮게) ─────────────────────────────────────── */
.site-footer { background: var(--color-primary-deep); color: rgba(255,255,255,0.72); padding: 22px 0 16px; margin-top: auto; font-size: var(--text-caption); }
.footer-inner { display: grid; gap: 10px; }
.footer-brand { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.footer-brand img { filter: brightness(0) invert(1); opacity: 0.85; flex-shrink: 0; height: 30px; width: auto; }
.footer-brand p { margin: 0; line-height: 1.6; }
.footer-brand strong { color: #fff; }
.footer-brand a { color: #8fd0f5; }
.footer-sep { margin: 0 8px; opacity: 0.4; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 8px 20px; flex-wrap: wrap; padding-top: 10px; border-top: 1px solid rgba(255,255,255,0.1); }
.footer-copy { margin: 0; color: rgba(255,255,255,0.45); font-size: 0.75rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 0.75rem; }
.footer-links a { color: rgba(255,255,255,0.75); }
@media (max-width: 768px) {
  .footer-brand { align-items: flex-start; }
  .footer-sep { display: none; }
  .footer-brand p strong { display: block; }
  .footer-brand p a { display: block; }
  .footer-bottom { flex-direction: column-reverse; align-items: flex-start; }
}