:root {
  --bg: #fbfaf7;
  --surface: #f3f1ec;
  --text: #1c1b19;
  --muted: #6b6760;
  --line: #e4e0d8;
  --accent: #c2410c;
  --accent-soft: #fbe6da;
  --code-bg: #f3f1ec;
  --sans: "Pretendard", system-ui, -apple-system, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "D2Coding", monospace;
  --measure: 42rem;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121211;
    --surface: #1b1b19;
    --text: #e9e6e0;
    --muted: #9a958c;
    --line: #2c2b28;
    --accent: #f08a4b;
    --accent-soft: #3a2519;
    --code-bg: #1b1b19;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0 auto;
  max-width: calc(var(--measure) + 2.5rem);
  padding: 0 1.25rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 400 1rem/1.7 var(--sans);
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1; }
a { color: inherit; }
::selection { background: var(--accent-soft); }

/* header & footer */
.site-header {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  padding: 2.25rem 0 3rem;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font: 700 1.2rem/1 var(--mono);
  letter-spacing: -.02em;
  text-decoration: none;
}
.wordmark .mark {
  width: .7rem;
  height: .7rem;
  border-radius: 2px;
  background: var(--accent);
}
.site-header nav { display: flex; gap: 1.25rem; font-size: .925rem; }
.site-header nav a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover, .site-header nav a[aria-current] { color: var(--text); }
.site-header nav a[aria-current] { box-shadow: 0 2px 0 var(--accent); }

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem;
  margin-top: 5rem;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .85rem;
}
.site-footer a { color: inherit; }

/* home */
.intro p {
  margin: 0 0 3rem;
  font-size: clamp(1.35rem, 3.6vw, 1.7rem);
  line-height: 1.35;
  letter-spacing: -.02em;
  font-weight: 600;
  max-width: 30ch;
}
.year {
  margin: 2.5rem 0 .75rem;
  font: 500 .8rem/1 var(--mono);
  letter-spacing: .08em;
  color: var(--muted);
}
.posts { list-style: none; margin: 0; padding: 0; }
.posts li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}
.posts time { font: .85rem/1.9 var(--mono); color: var(--muted); }
.post-link {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -.01em;
  text-decoration: none;
}
.post-link:hover { color: var(--accent); }
.posts p { margin: .2rem 0 0; color: var(--muted); font-size: .95rem; line-height: 1.6; }
.empty { color: var(--muted); }

/* post */
.post-header { margin-bottom: 2.5rem; }
.post-header h1, .page-title {
  margin: 0 0 .75rem;
  font-size: clamp(1.9rem, 5vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -.03em;
}
.page-title { margin-bottom: 2rem; }
.meta { margin: 0; color: var(--muted); font-size: .9rem; }
.tag {
  color: var(--accent);
  text-decoration: none;
  font-family: var(--mono);
  font-size: .9em;
}
.tag:hover { text-decoration: underline; }

.prose { font-size: 1.0625rem; line-height: 1.8; }
.prose > :first-child { margin-top: 0; }
.prose h2, .prose h3 { position: relative; line-height: 1.3; letter-spacing: -.02em; }
.prose h2 { margin: 2.75rem 0 .75rem; font-size: 1.45rem; }
.prose h3 { margin: 2rem 0 .5rem; font-size: 1.15rem; }
.prose .anchor {
  margin-left: .4rem;
  color: var(--muted);
  text-decoration: none;
  opacity: 0;
}
.prose h2:hover .anchor, .prose h3:hover .anchor, .prose .anchor:focus { opacity: 1; }
.prose a { text-decoration-color: var(--accent); text-underline-offset: .2em; text-decoration-thickness: 1.5px; }
.prose a:hover { color: var(--accent); }
.prose blockquote {
  margin: 1.5rem 0;
  padding: .25rem 0 .25rem 1.25rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}
.prose img { max-width: 100%; height: auto; border-radius: 8px; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 3rem 0; }
.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li + li { margin-top: .25rem; }
.prose table { display: block; overflow-x: auto; border-collapse: collapse; font-size: .95rem; }
.prose th, .prose td { padding: .5rem .9rem; border-bottom: 1px solid var(--line); text-align: left; }
.prose th { font-weight: 600; }

code, pre { font-family: var(--mono); }
.prose :not(pre) > code {
  padding: .12em .35em;
  border-radius: 4px;
  background: var(--code-bg);
  font-size: .88em;
}
.prose pre, .prose .hl {
  border-radius: 8px;
  background: var(--code-bg);
}
.prose .hl { margin: 1.5rem 0; border: 1px solid var(--line); }
.prose pre {
  margin: 0;
  padding: 1rem 1.15rem;
  overflow-x: auto;
  font-size: .875rem;
  line-height: 1.6;
}
.prose > pre { margin: 1.5rem 0; border: 1px solid var(--line); }

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.pager a { text-decoration: none; font-weight: 600; line-height: 1.4; }
.pager a:hover { color: var(--accent); }
.pager small { display: block; margin-bottom: .2rem; color: var(--muted); font-weight: 400; font-size: .8rem; }
.pager .newer { text-align: right; grid-column: 2; }

/* tags page */
.tag-cloud { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; }
.tag-cloud span { color: var(--muted); font: .8rem var(--mono); }

/* 404 */
.notfound h1 { margin: 0; font: 700 clamp(4rem, 15vw, 7rem)/1 var(--mono); color: var(--accent); letter-spacing: -.05em; }
.notfound p { color: var(--muted); }

@media (max-width: 30rem) {
  .site-header { padding-bottom: 2rem; }
  .posts li { grid-template-columns: 1fr; gap: .15rem; }
  .pager { grid-template-columns: 1fr; }
  .pager .newer { grid-column: 1; grid-row: 1; text-align: left; }
}