/* 화이트 단일 테마로 고정 — 보는 사람 OS 설정과 무관하게 같은 화면 */

:root {
  --bg: #FFFFFF;
  --bg-2: #F7F8F8;
  --ink: #16191C;
  --ink-2: #33383D;
  --muted: #6D757C;
  --faint: #9AA1A8;
  --rule: #E4E7E9;
  --rule-2: #EEF0F1;
  --code-bg: #F6F7F8;
  --code-ink: #24292F;
  --accent: #146E68;
  --accent-wash: #E8F2F1;

  --font-body: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo",
               "Malgun Gothic", system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "D2Coding", monospace;
}

* { box-sizing: border-box; }

html { background: var(--bg); color-scheme: only light; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.shell {
  display: grid;
  grid-template-columns: 15.5rem minmax(0, 1fr);
  gap: 3.5rem;
  max-width: 74rem;
  margin: 0 auto;
  padding: 0 2rem;
  align-items: start;
}

.sidenav {
  position: sticky; top: 0; max-height: 100vh; overflow-y: auto;
  padding: 2.5rem 0 3rem; scrollbar-width: thin;
}

main { padding: 3rem 0 8rem; min-width: 0; max-width: 46rem; }

/* ── 사이드 메뉴 ─────────────────────────── */

.brand { display: block; margin-bottom: 2rem; text-decoration: none; border: 0; }
.brand h1 {
  font-size: 1rem; font-weight: 660; color: var(--ink);
  margin: 0 0 0.15rem; letter-spacing: -0.015em;
}
.brand p {
  margin: 0; font-family: var(--font-mono); font-size: 0.6875rem;
  color: var(--faint); letter-spacing: 0.06em;
}

.navgroup { margin-bottom: 1.5rem; }

.navlabel {
  font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint); margin: 0 0 0.55rem;
  padding-left: 0.8rem;
}

.sidenav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.08rem; }

.sidenav ul a {
  display: block;
  padding: 0.34rem 0.8rem; font-size: 0.8125rem; line-height: 1.5;
  color: var(--muted); text-decoration: none; border: 0;
  border-left: 2px solid transparent;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.sidenav ul a:hover { color: var(--ink); }
.sidenav ul a.active {
  color: var(--accent); border-left-color: var(--accent); background: var(--accent-wash);
}

.sidefoot {
  border-top: 1px solid var(--rule); padding-top: 1rem; margin-top: 0.5rem;
  display: grid; gap: 0.3rem;
}
.sidefoot a {
  font-family: var(--font-mono); font-size: 0.6875rem; color: var(--muted);
  text-decoration: none; letter-spacing: 0.03em; padding-left: 0.8rem; border: 0;
}
.sidefoot a:hover { color: var(--accent); }

/* ── 홈 ────────────────────────────────── */

.home { margin-bottom: 2.5rem; }
.home > p:first-of-type {
  font-size: 1.125rem; line-height: 1.75; color: var(--ink); letter-spacing: -0.012em;
}
.home h2 {
  font-size: 0.9375rem; font-weight: 660; letter-spacing: -0.008em;
  margin: 2.6rem 0 1rem; scroll-margin-top: 2rem;
  display: flex; align-items: baseline; gap: 0.5rem;
}
.home h2::before {
  content: "#"; font-family: var(--font-mono); font-size: 0.8125rem;
  color: var(--accent); font-weight: 400;
}

/* 사이트 지도 */
.sitemap {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 0.5rem; max-width: 46rem;
}
.sitemap li {
  display: flex; align-items: baseline; gap: 0.55rem;
  padding-left: 0; position: static;
}
.sitemap li::before { content: none; }
.sitemap span {
  font-family: var(--font-mono); font-size: 0.6875rem; color: var(--faint);
}

.morelink {
  margin-top: 1.25rem; font-size: 0.875rem;
}
.morelink a { border-bottom: 0; }
.morelink a:hover { border-bottom: 1px solid var(--accent); }

.listhead {
  font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint);
  padding-bottom: 0.7rem; border-bottom: 1px solid var(--rule); margin: 0 0 0.5rem;
  max-width: 46rem;
}

.postlist { display: grid; max-width: 46rem; }

.postcard {
  display: block; padding: 1.4rem 0; border-bottom: 1px solid var(--rule-2);
  text-decoration: none; border-left: 0; border-right: 0; border-top: 0;
  color: inherit;
}
.postcard:hover .postcard__title { color: var(--accent); }

.postcard__meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.55rem;
  margin-bottom: 0.4rem;
}

.cat {
  font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.09em;
  text-transform: uppercase; color: #fff;
  background: var(--ink); padding: 0.22rem 0.6rem; border-radius: 999px;
}

/* 초안 표시. 로컬(npm run dev)에서만 보인다 */
.cat--draft {
  color: #fff; background: #B07A16;
}

.postcard__date {
  font-family: var(--font-mono); font-size: 0.6875rem; color: var(--faint);
  letter-spacing: 0.03em;
}

.postcard__title {
  font-size: 1.1875rem; font-weight: 660; color: var(--ink);
  letter-spacing: -0.018em; line-height: 1.5; margin: 0 0 0.3rem;
  transition: color 0.12s ease;
}

.postcard__sum { margin: 0; font-size: 0.875rem; color: var(--muted); line-height: 1.7; }

/* ── 글 ──────────────────────────────────── */

.posthead { margin-bottom: 2.6rem; }
.posthead .postcard__meta { margin-bottom: 0.6rem; }

h2 {
  font-size: 2.125rem; font-weight: 700; letter-spacing: -0.032em;
  line-height: 1.3; color: var(--ink); margin: 0; text-wrap: balance;
}

/* 본문 소제목 (마크다운 ##) */
main article h2 {
  font-size: 1.125rem; font-weight: 680; letter-spacing: -0.014em;
  margin: 3rem 0 1rem; scroll-margin-top: 2rem;
  display: flex; align-items: baseline; gap: 0.5rem;
}
main article h2::before {
  content: "#"; font-family: var(--font-mono); font-size: 0.8125rem;
  color: var(--accent); font-weight: 400;
}
/* 글 제목은 예외 */
.posthead h2 { font-size: 2.125rem; margin: 0; display: block; }
.posthead h2::before { content: none; }

h3 {
  font-size: 0.9375rem; font-weight: 660; color: var(--ink);
  margin: 2rem 0 0.8rem;
}

p { margin: 0 0 1.25rem; max-width: 46rem; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--accent); text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
a:hover { border-bottom-color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

strong { font-weight: 660; color: var(--ink); }

main article ul, main article ol {
  margin: 0 0 1.25rem; padding: 0; list-style: none;
  display: grid; gap: 0.6rem; max-width: 46rem;
}
main article li { padding-left: 1.05rem; position: relative; }
main article li::before {
  content: ""; position: absolute; left: 0; top: 0.82em;
  width: 6px; height: 1px; background: var(--faint);
}

code {
  font-family: var(--font-mono); font-size: 0.855em; background: var(--code-bg);
  color: var(--code-ink); padding: 0.15em 0.4em; border-radius: 3px;
  border: 1px solid var(--rule-2);
}

pre {
  margin: 0 0 1.25rem; background: var(--code-bg); border: 1px solid var(--rule);
  border-radius: 5px; padding: 0.95rem 1.1rem; overflow-x: auto; max-width: 46rem;
}
pre code {
  background: none; border: 0; padding: 0; font-size: 0.8125rem;
  line-height: 1.75; color: var(--code-ink); display: block; white-space: pre;
}

blockquote {
  margin: 0 0 1.25rem; padding: 0.15rem 0 0.15rem 1.1rem;
  border-left: 2px solid var(--accent); color: var(--ink); max-width: 46rem;
}
blockquote p { margin: 0; }

table {
  border-collapse: collapse; width: 100%; font-size: 0.875rem; line-height: 1.6;
  margin: 0 0 1.25rem; max-width: 46rem; display: block; overflow-x: auto;
}
th, td {
  text-align: left; padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--rule); vertical-align: top;
}
thead th {
  font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--faint); font-weight: 500; background: var(--bg-2);
}
tbody tr:last-child td { border-bottom: 0; }
td:last-child { color: var(--ink); font-variant-numeric: tabular-nums; }

hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; max-width: 46rem; }

/* 회고 박스 */
.afterthought {
  margin: 2.2rem 0 0; background: var(--bg-2); border: 1px solid var(--rule);
  border-radius: 5px; padding: 1.1rem 1.3rem; max-width: 46rem;
}
.afterthought .tag {
  font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 0.5rem;
}
.afterthought p { margin: 0; max-width: none; }

/* 댓글 */
.comments {
  margin-top: 3.5rem; padding-top: 1.6rem;
  border-top: 1px solid var(--rule); max-width: 46rem;
}
.comments .navlabel { padding-left: 0; margin-bottom: 1rem; }
.comments noscript { font-size: 0.875rem; color: var(--muted); }
.giscus, .giscus-frame { width: 100%; }
.giscus-frame { border: 0; color-scheme: light; }

/* 다른 글 */
.more {
  margin-top: 3.5rem; padding-top: 1.6rem;
  border-top: 1px solid var(--rule); max-width: 46rem;
}
.more .navlabel { padding-left: 0; }
.more ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.more li { padding-left: 0; }
.more li::before { content: none; }
.more a {
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.6rem;
  align-items: baseline; text-decoration: none; border: 0;
  color: var(--ink-2); font-size: 0.875rem; line-height: 1.55;
}
.more a:hover { color: var(--accent); }

/* 이력 표 */
.cv__row { padding: 1rem 0; border-bottom: 1px solid var(--rule-2); max-width: 46rem; }
.cv__row:last-child { border-bottom: 0; }
.cv__when {
  font-family: var(--font-mono); font-size: 0.6875rem; color: var(--faint);
  letter-spacing: 0.04em; display: block; margin-bottom: 0.25rem;
}
.cv__row b { font-weight: 660; color: var(--ink); }
.cv__row p { margin: 0.25rem 0 0; font-size: 0.875rem; color: var(--muted); }

.colophon {
  margin-top: 4rem; padding-top: 1.25rem; border-top: 1px solid var(--rule);
  font-family: var(--font-mono); font-size: 0.6875rem; color: var(--faint);
  line-height: 1.9; letter-spacing: 0.02em;
}

@media (max-width: 76rem) {
  .shell { grid-template-columns: 14.5rem minmax(0, 1fr); gap: 2.5rem; }
  .toc { display: none; }
}

@media (max-width: 54rem) {
  .shell { grid-template-columns: minmax(0, 1fr); gap: 0; padding: 0 1.4rem; }
  .sidenav {
    position: static; max-height: none; padding: 2.5rem 0 1.5rem;
    border-bottom: 1px solid var(--rule);
  }
  .sidenav ul { grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr)); }
  .sidefoot { display: flex; flex-wrap: wrap; gap: 1rem; }
  .sidefoot a { padding-left: 0; }
  main { padding-top: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}