/* avenpa.com — 흑백 전용 리디자인 (Vercel 참고: 압축 타이포 · 그림자 테두리 · 모노 라벨)
   규칙: 검정·흰색·회색만. 강조는 굵기·크기·여백·1px 선. 외부 폰트/CDN 없음. */
:root {
  --bg:#ffffff;
  --fg:#171717;
  --muted:#4d4d4d;
  --muted2:#666666;
  --line:#ebebeb;
  --ring:rgba(0,0,0,.08);
  --ring2:rgba(0,0,0,.16);
  --panel:#fafafa;
  --nav:rgba(255,255,255,.8);
  --wrap:1080px;
  --rad:8px;
  --sans:"Geist",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,
         "Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,
         "Liberation Mono",monospace;
}
html[data-theme="dark"] {
  --bg:#000000;
  --fg:#ededed;
  --muted:#a1a1a1;
  --muted2:#888888;
  --line:#1f1f1f;
  --ring:rgba(255,255,255,.14);
  --ring2:rgba(255,255,255,.28);
  --panel:#0a0a0a;
  --nav:rgba(0,0,0,.8);
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  margin:0; background:var(--bg); color:var(--fg);
  font-family:var(--sans); font-size:16px; line-height:1.6;
  font-feature-settings:"liga" 1,"tnum" 0;
  overflow-wrap:break-word;          /* 긴 URL·영단어가 좁은 폭을 밀어내지 않게 */
  -webkit-font-smoothing:antialiased;
}
a { color:inherit; text-decoration:none; }
h1,h2,h3 { margin:0; font-weight:600; line-height:1.1; letter-spacing:-.02em; }
p { margin:0; }
::selection { background:var(--fg); color:var(--bg); }
:focus-visible { outline:2px solid var(--fg); outline-offset:3px; border-radius:4px; }
.wrap { max-width:var(--wrap); margin:0 auto; padding:0 24px; }

/* 모노 라벨 — 기술적 표기 (Vercel 의 콘솔 보이스) */
.mono, .kicker {
  font-family:var(--mono); font-size:12px; font-weight:500; letter-spacing:.08em;
  text-transform:uppercase; color:var(--muted2);
}

/* ---------------------------------------------------------------- 내비 */
.nav {
  position:sticky; top:0; z-index:30; height:56px; background:var(--nav);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner { height:56px; display:flex; align-items:center; gap:8px; }
.brand { font-size:15px; font-weight:600; letter-spacing:-.01em; }
.brand span { color:var(--muted2); }
.nav-links { list-style:none; display:flex; align-items:center; gap:4px; margin:0 0 0 auto; padding:0; }
.nav-links a {
  display:block; padding:6px 10px; border-radius:6px;
  font-size:14px; font-weight:500; color:var(--muted);
}
.nav-links a:hover { color:var(--fg); background:var(--panel); }
.nav-links a[aria-current="page"] { color:var(--fg); }
.theme {
  margin-left:4px; width:30px; height:30px; flex:0 0 auto; cursor:pointer;
  background:var(--bg); box-shadow:inset 0 0 0 1px var(--ring); border:0; border-radius:6px;
  color:var(--muted); font-size:12px; line-height:1;
}
.theme:hover { color:var(--fg); box-shadow:inset 0 0 0 1px var(--ring2); }
.nav .admin {
  display:inline-flex; align-items:center; gap:6px; padding:5px 10px; border-radius:6px;
  box-shadow:inset 0 0 0 1px var(--fg); color:var(--fg);
  font-size:13px; font-weight:500; margin-left:6px;
}
.nav .admin:hover { background:var(--fg); color:var(--bg); }
.nav .admin .adm-dot { width:5px; height:5px; border-radius:99px; background:currentColor; }

/* 하위 페이지 제목 줄 */
.local {
  position:sticky; top:56px; z-index:20; background:var(--nav);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.local-inner { min-height:48px; display:flex; align-items:center; gap:12px; }
.local-title { font-size:14px; font-weight:600; letter-spacing:-.01em; }
.local-back { margin-left:auto; font-size:13px; color:var(--muted); }
.local-back:hover { color:var(--fg); }

/* ---------------------------------------------------------------- 본문 */
main { position:relative; }
.hero { padding:clamp(72px,11vw,140px) 0 clamp(44px,6vw,84px); }
.display {
  font-size:clamp(36px,6.4vw,68px); font-weight:600; letter-spacing:-.045em; line-height:1.03;
}
.display .soft { color:var(--muted2); }
.sub {
  margin-top:20px; max-width:46ch;
  font-size:clamp(17px,1.6vw,20px); line-height:1.6; color:var(--muted);
}
.sub.wide { max-width:54ch; }
.cta { display:flex; flex-wrap:wrap; gap:10px; margin-top:28px; }
.btn {
  display:inline-flex; align-items:center; gap:8px; padding:9px 15px; border-radius:6px;
  font-size:14px; font-weight:500; background:var(--bg); color:var(--fg);
  box-shadow:inset 0 0 0 1px var(--ring);
  transition:background .16s ease, color .16s ease, box-shadow .16s ease, opacity .16s ease;
}
.btn:hover { box-shadow:inset 0 0 0 1px var(--ring2); }
.btn.solid { background:var(--fg); color:var(--bg); box-shadow:none; }
.btn.solid:hover { opacity:.85; }
.btn.q { box-shadow:none; color:var(--muted); padding-left:4px; padding-right:4px; }
.btn.q:hover { color:var(--fg); }
.admin-note { margin-top:16px; font-size:13px; color:var(--muted2); }
.admin-note::before { content:"ⓘ "; }

.band { padding:clamp(48px,7vw,96px) 0; border-top:1px solid var(--line); }
.band h2 { font-size:clamp(22px,2.6vw,32px); letter-spacing:-.03em; }
.band h2 + p { margin-top:12px; color:var(--muted); max-width:52ch; }
.lead-1 { font-size:17px; line-height:1.65; color:var(--muted); max-width:52ch; }
.kicker { display:block; margin-bottom:14px; }
.more { display:inline-block; margin-top:18px; font-size:14px; font-weight:500; }
.more::after { content:" →"; color:var(--muted2); }
.more:hover { color:var(--muted); }

/* 카드 — CSS border 대신 그림자 테두리 (Vercel 방식) */
.grid { display:grid; gap:20px; margin-top:32px; }
.grid.t2 { grid-template-columns:repeat(2,1fr); }
.grid.t3 { grid-template-columns:repeat(3,1fr); }
.card {
  background:var(--bg); border-radius:var(--rad); padding:24px;
  box-shadow:0 0 0 1px var(--ring), 0 2px 2px rgba(0,0,0,.03);
  transition:box-shadow .18s ease;
}
.card:hover { box-shadow:0 0 0 1px var(--ring2), 0 4px 10px -6px rgba(0,0,0,.18); }
.card .label { display:block; margin-bottom:14px; }
.card h3 { font-size:17px; letter-spacing:-.015em; }
.card p { margin-top:8px; color:var(--muted); font-size:15px; line-height:1.55; }

/* ---------------------------------------------------- 글 목록(인덱스) */
.rows { margin-top:30px; border-top:1px solid var(--line); }
.row {
  display:flex; align-items:baseline; gap:22px; padding:22px 0;
  border-bottom:1px solid var(--line); position:relative;
}
.row > div { flex:1; min-width:0; }
.row > div { flex:1 1 auto; }
.row .n {
  flex:0 0 92px; font-family:var(--mono); font-size:12px; letter-spacing:.04em;
  color:var(--muted2);
}
.row h3 {
  font-size:19px; font-weight:500; letter-spacing:-.02em; line-height:1.3;
  transition:color .18s ease;
}
.row p { margin-top:8px; color:var(--muted); font-size:15px; line-height:1.6; max-width:58ch; }
.row::after {
  content:"→"; margin-left:auto; padding-left:16px; color:var(--muted2);
  opacity:0; transition:opacity .18s ease, transform .18s ease; transform:translateX(-3px);
}
.row:hover::after { opacity:1; transform:none; }
.row:hover h3 { color:var(--muted); }
.empty {
  margin-top:30px; padding:34px 0; border-top:1px solid var(--line);
  border-bottom:1px solid var(--line); color:var(--muted2);
  font-family:var(--mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase;
}

/* 연락 링크 */
.links { display:grid; gap:12px; margin-top:24px; }
.link {
  display:flex; align-items:center; gap:14px; padding:18px 20px; border-radius:var(--rad);
  background:var(--bg); box-shadow:0 0 0 1px var(--ring);
}
.link:hover { box-shadow:0 0 0 1px var(--ring2); }
.link b { display:block; font-size:15px; font-weight:500; }
.link em { font-style:normal; font-size:14px; color:var(--muted); }
.link .arrow { margin-left:auto; color:var(--muted2); transition:transform .18s ease; }
.link:hover .arrow { transform:translateX(3px); color:var(--fg); }

/* ------------------------------------------------------------ 글(포스트) */
.note { max-width:var(--wrap); }
.note-head {
  padding:clamp(56px,8vw,104px) 0 28px; border-bottom:1px solid var(--line);
}
.note-head h1 {
  margin-top:14px; font-size:clamp(30px,4.4vw,52px); line-height:1.06; letter-spacing:-.04em;
  max-width:22ch;
}
.note-meta {
  margin-top:18px; display:flex; gap:16px; flex-wrap:wrap;
  font-family:var(--mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase;
  color:var(--muted2);
}
.note-actions { margin-top:22px; }

.post-body {
  margin:40px 0 clamp(40px,6vw,72px); max-width:68ch;
  font-size:17.5px; line-height:1.75;
}
.post-body > * + * { margin-top:18px; }
.post-body p { color:var(--muted); }
.post-body h2 {
  margin-top:50px; font-size:clamp(21px,2.2vw,25px); letter-spacing:-.025em; line-height:1.3;
}
.post-body h2::before {
  content:""; display:block; width:38px; height:1px; background:var(--line);
  margin-bottom:18px;
}
.post-body h3 { margin-top:36px; font-size:18px; letter-spacing:-.015em; }
.post-body ul, .post-body ol { padding-left:20px; }
.post-body li { margin-top:10px; color:var(--muted); padding-left:2px; }
.post-body li::marker { color:var(--muted2); }
.post-body strong { color:var(--fg); font-weight:600; }
.post-body em { font-style:italic; color:var(--muted); }
.post-body a { text-decoration:underline; text-underline-offset:3px; text-decoration-thickness:1px; }
.post-body a:hover { color:var(--muted); }
.post-body code {
  font-family:var(--mono); font-size:.86em; background:var(--panel); color:var(--fg);
  border-radius:4px; padding:2px 6px; box-shadow:inset 0 0 0 1px var(--ring);
}
.post-body pre {
  background:var(--panel); border-radius:12px; padding:18px 20px; overflow-x:auto;
  box-shadow:inset 0 0 0 1px var(--ring); font-size:13.5px; line-height:1.65;
}
.post-body pre code { background:none; box-shadow:none; padding:0; font-size:inherit; }
.post-body blockquote {
  padding:2px 0 2px 18px; border-left:2px solid var(--line); color:var(--muted);
}
.post-body hr { border:0; border-top:1px solid var(--line); margin:40px 0; }
.post-body img { max-width:100%; height:auto; border-radius:10px; }
.post-body table { width:100%; border-collapse:collapse; font-size:15px; }
.post-body th, .post-body td { text-align:left; padding:10px 12px; border-bottom:1px solid var(--line); }
.post-body th { font-weight:600; color:var(--fg); }
.note-foot { border-top:1px solid var(--line); padding:24px 0 clamp(48px,6vw,80px); }

/* ------------------------------------- 글 수정 폼 (허용 IP 에게만 보인다) */
.edit {
  margin-top:26px; padding:24px; border-radius:12px; background:var(--panel);
  box-shadow:inset 0 0 0 1px var(--ring);
}
.field + .field { margin-top:18px; }
.field .kicker { display:block; margin-bottom:8px; }
.field input[type="text"], .field textarea {
  width:100%; font-family:var(--sans); font-size:15px; color:var(--fg);
  background:var(--bg); border:0; border-radius:8px; padding:11px 13px;
  box-shadow:inset 0 0 0 1px var(--ring);
}
.field textarea {
  font-family:var(--mono); font-size:13.5px; line-height:1.7; min-height:340px;
  resize:vertical; white-space:pre; overflow-wrap:normal; overflow-x:auto;
}
.field input:focus, .field textarea:focus {
  outline:0; box-shadow:inset 0 0 0 1px var(--fg);
}
.edit .cta { margin-top:20px; }
.edit-msg { margin-top:14px; font-size:13px; color:var(--muted2); min-height:1em; }
.btn.danger { box-shadow:inset 0 0 0 1px var(--ring2); }
.btn.danger:hover { background:var(--fg); color:var(--bg); }

/* -------------------------------------- 글 본문 확장 (후크·강조·이미지·영상·배너) */
.note-lead {
  font-size:clamp(18px,2.1vw,23px); line-height:1.5; letter-spacing:-.02em;
  color:var(--fg); max-width:52ch;
}
.post-body > .note-lead:first-child { margin-top:0; }
mark { background:var(--fg); color:var(--bg); padding:0 4px; border-radius:3px; }

.callout {
  border-radius:12px; background:var(--panel); padding:18px 20px;
  box-shadow:inset 0 0 0 1px var(--ring); border-left:2px solid var(--fg);
}
.callout .label {
  display:block; margin-bottom:10px; font-family:var(--mono); font-size:11.5px;
  letter-spacing:.1em; text-transform:uppercase; color:var(--fg);
}
.callout p { color:var(--muted); }
.callout p + p { margin-top:10px; }
.callout.tip { border-left-width:4px; }
.callout.warn { border-left-width:5px; }
.callout.danger { border-left-width:8px; }

figure.media { margin:30px 0; }
figure.media img, figure.media video {
  display:block; width:100%; height:auto; border-radius:12px;
  box-shadow:inset 0 0 0 1px var(--ring); background:var(--panel);
}
figure.media figcaption, .banner figcaption {
  display:block; margin-top:10px; font-family:var(--mono); font-size:11.5px;
  letter-spacing:.06em; text-transform:uppercase; color:var(--muted2);
}
.banner { margin:34px 0; }
.banner .banner-title { display:block; margin-bottom:12px; font-size:15px; font-weight:600; }
.banner img {
  display:block; width:100%; height:auto; border-radius:14px;
  box-shadow:inset 0 0 0 1px var(--ring);
}
.embed { margin:30px 0; }
.embed .frame {
  position:relative; aspect-ratio:16/9; border-radius:12px; overflow:hidden;
  background:var(--panel); box-shadow:inset 0 0 0 1px var(--ring);
}
.embed iframe { position:absolute; inset:0; width:100%; height:100%; border:0; }
.embed-cap {
  display:block; margin-top:10px; font-family:var(--mono); font-size:11.5px;
  letter-spacing:.06em; text-transform:uppercase; color:var(--muted2);
}

/* 편집 폼 문법 치트시트 */
.syntax { margin-top:18px; }
.syntax summary {
  cursor:pointer; font-family:var(--mono); font-size:12px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--muted2);
}
.syntax-list {
  margin:12px 0 0; padding:16px 18px; overflow-x:auto; border-radius:8px;
  background:var(--bg); box-shadow:inset 0 0 0 1px var(--ring);
  font-family:var(--mono); font-size:12.5px; line-height:1.8; color:var(--muted);
  white-space:pre;
}

/* ------------------------------------------------ 모바일 다듬기 (터치·간격) */
@media (max-width:640px) {
  body { font-size:15.5px; }
  .hero { padding:clamp(48px,11vw,96px) 0 36px; }
  .display { font-size:clamp(30px,9vw,44px); letter-spacing:-.035em; }
  .sub { margin-top:16px; font-size:16.5px; }
  .band { padding:40px 0; }
  .band h2 { font-size:clamp(20px,6vw,26px); }
  .btn { padding:12px 16px; min-height:44px; }          /* 손가락 터치 크기 */
  .nav-links a { min-height:40px; display:flex; align-items:center; }
  .local-inner { min-height:46px; }
  .note-head { padding:44px 0 22px; }
  .note-head h1 { font-size:clamp(26px,7.5vw,34px); }
  .post-body { font-size:16.5px; line-height:1.72; margin:28px 0 40px; }
  .post-body h2 { margin-top:38px; }
  .row { flex-direction:column; gap:6px; padding:18px 0; }   /* 날짜를 제목 위로 */
  .row .n { flex:none; }
  .row::after { display:none; }
  .row p { max-width:none; }
  figure.media, .embed, .banner { margin:24px 0; }
  figure.media img, figure.media video, .banner img { border-radius:10px; }
  .edit { padding:18px; }
  .field textarea { min-height:260px; }
}
@media (max-width:430px) {
  .wrap { padding:0 16px; }
  .nav { height:52px; }
  .nav-inner { height:52px; gap:6px; }
  .brand { font-size:13.5px; }
  .nav-links { gap:0; }
  .nav-links a { padding:5px 5px; font-size:11px; letter-spacing:0; }
  .theme { width:26px; height:26px; margin-left:2px; }
  .local { top:52px; }
}

/* -------------------------------------------------------------- footer */
.foot { border-top:1px solid var(--line); padding:28px 0 56px; }
.foot-inner { display:flex; flex-wrap:wrap; gap:10px 20px; align-items:center; }
.foot a { font-size:13px; color:var(--muted); }
.foot a:hover { color:var(--fg); }
.foot .sep { color:var(--line); }
.foot .copy { margin-left:auto; font-size:12px; color:var(--muted2); }

/* -------------------------------------------------------------- 반응형 */
@media (max-width:900px) { .grid.t3 { grid-template-columns:1fr; } }
@media (max-width:640px) {
  .wrap { padding:0 18px; }
  .grid.t2 { grid-template-columns:1fr; }
  .row { gap:14px; }
  .row .n { flex:0 0 74px; }
}
@media (max-width:430px) {
  .wrap { padding:0 16px; }
  .nav-inner { gap:6px; }
  .brand { font-size:14px; }
  .nav-links { gap:0; }
  .nav-links a { padding:5px 6px; font-size:11.5px; }
  .theme { width:26px; height:26px; margin-left:2px; }
}

/* --------------------------------------------------------------- 등장 */
.reveal { opacity:0; transform:translateY(10px); transition:opacity .5s ease, transform .5s ease; }
.reveal.in { opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  .reveal { opacity:1; transform:none; transition:none; }
  .link:hover .arrow { transform:none; }
}