/* UNFADE shared site shell — based on AI Trend Light Design System. */
:root {
  --unfade-font-kr: "Pretendard Variable", Pretendard, SUIT, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --unfade-font-en: Inter, var(--unfade-font-kr);
  --unfade-ink: #111214;
  --unfade-muted: #626871;
  --unfade-paper: #ffffff;
  --unfade-wash: #f3f4f6;
  --unfade-line: #dfe2e7;
  --unfade-coral: #ff8c86;
  --unfade-coral-wash: #ffe4e1;
  --unfade-mint: #99f0dc;
  --unfade-lime: #a7e982;
  --unfade-lime-wash: #e9f8df;
  --unfade-navy: #17334b;
  --unfade-content-width: 1200px;
  --unfade-sitebar-height: 72px;
  /* Visible height of the shell header; unfade-shell.js lowers it to 0 as the header scrolls away. */
  --unfade-shell-offset: var(--unfade-sitebar-height);
}

#unfade-site-chrome,
#unfade-site-chrome * { box-sizing: border-box; }

#unfade-site-chrome {
  color: var(--unfade-ink);
  font-family: var(--unfade-font-kr);
}

/* The header scrolls with the page. Tool bars that stay on screen use --unfade-shell-offset,
   so they sit right under the header at the top and move to 0 once it is gone (no gap). */
#unfade-site-chrome .site-header {
  position: relative;
  z-index: 1000;
  background: var(--unfade-paper);
  border-bottom: 1px solid var(--unfade-line);
}

#unfade-site-chrome .sitebar {
  min-height: var(--unfade-sitebar-height);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 38px;
}

#unfade-site-chrome button { font: inherit; }

#unfade-site-chrome .menu-toggle {
  justify-self: start;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--unfade-ink);
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

#unfade-site-chrome .menu-icon,
#unfade-site-chrome .menu-icon::before,
#unfade-site-chrome .menu-icon::after {
  display: block;
  width: 15px;
  height: 1.5px;
  background: currentColor;
}

#unfade-site-chrome .menu-icon { position: relative; }
#unfade-site-chrome .menu-icon::before,
#unfade-site-chrome .menu-icon::after { content: ""; position: absolute; left: 0; }
#unfade-site-chrome .menu-icon::before { top: -5px; }
#unfade-site-chrome .menu-icon::after { top: 5px; }

#unfade-site-chrome .wordmark {
  color: inherit;
  font: 800 25px/1 var(--unfade-font-en);
  letter-spacing: -0.075em;
  text-align: center;
  text-decoration: none;
}

#unfade-site-chrome .header-meta {
  justify-self: end;
  font: 650 13px/1 var(--unfade-font-en);
}

#unfade-site-chrome .header-meta strong {
  display: inline-block;
  margin-left: 10px;
  padding: 10px 13px;
  background: var(--unfade-mint);
  color: var(--unfade-ink);
}

#unfade-site-chrome .menu-scrim {
  position: fixed;
  inset: 0;
  z-index: 1090;
  background: rgb(17 18 20 / 18%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

#unfade-site-chrome .side-menu {
  position: fixed;
  z-index: 1100;
  inset: 0 auto 0 0;
  width: min(380px, 88vw);
  padding: 30px;
  background: var(--unfade-paper);
  border-right: 1px solid var(--unfade-line);
  box-shadow: 16px 0 45px rgb(17 18 20 / 10%);
  transform: translateX(-105%);
  transition: transform 220ms ease;
}

body.unfade-menu-open #unfade-site-chrome .menu-scrim { opacity: 1; pointer-events: auto; }
body.unfade-menu-open #unfade-site-chrome .side-menu { transform: translateX(0); }

#unfade-site-chrome .side-menu__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--unfade-line);
}

#unfade-site-chrome .side-menu__close {
  appearance: none;
  border: 1px solid var(--unfade-ink);
  background: var(--unfade-paper);
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 20px;
}

#unfade-site-chrome nav { padding-top: 20px; }
#unfade-site-chrome nav a {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--unfade-line);
  color: inherit;
  text-decoration: none;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.04em;
}
#unfade-site-chrome nav a::after { content: "↗"; font: 500 16px/1 var(--unfade-font-en); }

body.unfade-site-page { background: var(--unfade-wash); }
body.unfade-site-page .appbar { top: var(--unfade-shell-offset); }

@media (max-width: 800px) {
  :root { --unfade-sitebar-height: 58px; }
  #unfade-site-chrome .sitebar { padding: 0 18px; }
  #unfade-site-chrome .wordmark { font-size: 20px; }
  #unfade-site-chrome .header-meta { display: none; }
}

@media print {
  #unfade-site-chrome { display: none !important; }
  body.unfade-site-page .appbar { top: 0; }
}

/* ── 사이트 전체 통일 (2026-10-14 UI 검토) ───────────────────────────────── */
/* 셸은 자기 토큰을 다시 선언한다 — 도구 테마가 body 에 덮어쓴 색을 물려받지 않게(헤더가 모든 화면에서 같음) */
#unfade-site-chrome {
  --unfade-ink: #111214; --unfade-muted: #626871; --unfade-paper: #ffffff;
  --unfade-line: #dfe2e7; --unfade-mint: #99f0dc; --unfade-coral: #ff8c86; --unfade-navy: #17334b;
  line-height: 1.5;
}
:root { --unfade-focus: #17334b; }

/* 닫힌 서랍은 키보드 순서에서 빠진다 */
#unfade-site-chrome :is(.side-menu, .menu-scrim) {
  visibility: hidden;
  transition: transform 220ms ease, opacity 180ms ease, visibility 0s linear 220ms;
}
body.unfade-menu-open #unfade-site-chrome :is(.side-menu, .menu-scrim) { visibility: visible; transition-delay: 0s; }
#unfade-site-chrome :focus-visible { outline: 2px solid var(--unfade-ink); outline-offset: 3px; }
#unfade-site-chrome .side-menu__close { width: 44px; height: 44px; }
#unfade-site-chrome nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--unfade-coral); padding-left: 14px; }
#unfade-site-chrome nav a::after { content: "→"; }

/* 오른쪽 머리 정보: 장식 배지 대신 PC↔모바일 전환 링크(있는 도구만) */
#unfade-site-chrome .header-meta strong { background: none; padding: 0; margin: 0; color: var(--unfade-muted); }
#unfade-site-chrome .header-meta a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 4px; color: var(--unfade-ink); text-decoration: underline; text-underline-offset: 3px; font: 600 13px/1 var(--unfade-font-kr); }
#unfade-site-chrome .header-meta:not(.has-switch) { color: var(--unfade-muted); font: 600 12px/1 var(--unfade-font-en); letter-spacing: .06em; }
@media (max-width: 800px) {
  #unfade-site-chrome .header-meta.has-switch { display: block; }
  #unfade-site-chrome .header-meta a { font-size: 12px; }
}

/* 모든 화면 공통 포커스 표시 */
body.unfade-site-page :is(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--unfade-focus); outline-offset: 2px;
}

/* '맨 위로' 버튼 — 없던 화면에는 셸이 넣고, 있던 화면은 모양만 맞춘다 */
.unfade-to-top,
body.unfade-site-page :is(#back-top, #totop, .totop) {
  width: 46px; height: 46px; border-radius: 0; border: 1px solid #dfe2e7;
  background: #ffffff; color: #111214; box-shadow: 0 6px 18px rgb(17 18 20 / 8%);
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
}
.unfade-to-top { position: fixed; right: 20px; bottom: 20px; z-index: 900; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s, visibility 0s linear .2s; font: 600 18px/1 var(--unfade-font-en); }
.unfade-to-top.is-on { opacity: 1; visibility: visible; pointer-events: auto; transition-delay: 0s; }
@media print { .unfade-to-top { display: none !important; } }