/* Blog layout: sticky masthead, feed + sidebar on wide screens, single reading column for posts */
:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --ink: #1d2422;
  --graphite: #5f6764;
  --rule: #e2e4df;
  --slate: #34536b;
  --mark: #f0dc5a;
  --mark-ink: #1d2422;
  --sans: 'IBM Plex Sans KR', system-ui, sans-serif;
  --serif: 'Gowun Batang', 'Noto Serif KR', serif;
  --measure: 40rem;
  --wide: 72rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #181c1b;
    --surface: #1f2423;
    --ink: #e5e8e3;
    --graphite: #a2a9a5;
    --rule: #333a38;
    --slate: #9fbad0;
    --mark: #d9c445;
    color-scheme: dark;
  }
}
:root[data-theme='dark'] {
  --bg: #181c1b;
  --surface: #1f2423;
  --ink: #e5e8e3;
  --graphite: #a2a9a5;
  --rule: #333a38;
  --slate: #9fbad0;
  --mark: #d9c445;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1rem/1.7 var(--sans);
  word-break: keep-all;
  overflow-wrap: break-word;
}
::selection { background: var(--mark); color: var(--mark-ink); }
a { color: var(--slate); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--slate); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; height: auto; }
h1, h2, h3, h4 { font-family: var(--sans); font-weight: 600; line-height: 1.4; letter-spacing: -0.02em; text-wrap: balance; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--mark); color: var(--mark-ink); padding: 0.4rem 0.8rem; z-index: 20; }

.wrap { max-width: var(--wide); margin: 0 auto; padding-inline: max(1.25rem, env(safe-area-inset-left, 0px)); }

/* ── masthead ───────────────────────────── */
.masthead {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.masthead .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; min-height: 3.75rem; flex-wrap: wrap; }
.brand { text-decoration: none; color: var(--ink); display: flex; align-items: baseline; gap: 0.55rem; }
.brand-name { font-family: var(--serif); font-weight: 700; font-size: 1.25rem; letter-spacing: -0.01em; }
.brand-author { font-size: 0.85rem; color: var(--graphite); }
.masthead nav { display: flex; gap: 1.5rem; font-size: 0.95rem; }
.masthead nav a { color: var(--graphite); text-decoration: none; padding: 0.25rem 0; }
.masthead nav a:hover { color: var(--ink); }
.masthead nav a[aria-current='page'] { color: var(--ink); font-weight: 600; box-shadow: inset 0 -0.35em 0 var(--mark); }

/* ── blog grid ──────────────────────────── */
.blog { display: grid; gap: 3rem; padding-block: 2.5rem 0; }
@media (min-width: 960px) { .blog { grid-template-columns: minmax(0, 1fr) 18rem; gap: 4rem; } }
.blog > * { min-width: 0; }

.feed-head { margin: 0 0 1.25rem; display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.feed-head h1 { font-size: 1.5rem; margin: 0; }
.feed-head p { margin: 0; color: var(--graphite); font-size: 0.9rem; }

/* featured (newest) */
.featured { display: block; text-decoration: none; color: var(--ink); padding-bottom: 2rem; margin-bottom: 0.5rem; border-bottom: 1px solid var(--rule); }
.featured .thumb { aspect-ratio: 16 / 9; border-radius: 6px; overflow: hidden; background: var(--surface); border: 1px solid var(--rule); margin-bottom: 1.25rem; max-width: 100%; }
.featured .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.featured h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0.35rem 0 0.6rem; }
.featured p.sub { margin: 0; color: var(--graphite); font-size: 1rem; line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.featured:hover h2 { color: var(--slate); }

/* card list */
.cards { list-style: none; margin: 0; padding: 0; }
.card { border-bottom: 1px solid var(--rule); }
.card a { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1.25rem; padding: 1.4rem 0; text-decoration: none; color: var(--ink); align-items: start; }
.card h3 { font-size: 1.15rem; margin: 0.25rem 0 0.4rem; }
.card a:hover h3 { color: var(--slate); }
.card .sub { margin: 0; font-size: 0.93rem; color: var(--graphite); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card .thumb { width: 9rem; aspect-ratio: 3 / 2; border-radius: 4px; overflow: hidden; border: 1px solid var(--rule); background: var(--surface); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 560px) { .card .thumb { width: 6rem; } }

.kicker { display: flex; flex-wrap: wrap; gap: 0.25rem 0.75rem; font-size: 0.8rem; color: var(--graphite); align-items: center; }
.kicker .cat { color: var(--slate); font-weight: 500; }
.lang-tag { font-size: 0.7rem; border: 1px solid var(--rule); border-radius: 3px; padding: 0 0.3rem; color: var(--graphite); }

/* pagination */
.pager { display: flex; justify-content: center; align-items: center; gap: 0.35rem; margin: 2.5rem 0 0; font-size: 0.95rem; flex-wrap: wrap; }
.pager a, .pager span { min-width: 2.25rem; text-align: center; padding: 0.35rem 0.6rem; border-radius: 4px; text-decoration: none; color: var(--graphite); font-variant-numeric: tabular-nums; }
.pager a:hover { background: var(--surface); color: var(--ink); }
.pager [aria-current='page'] { color: var(--mark-ink); background: var(--mark); font-weight: 600; }

/* ── sidebar ────────────────────────────── */
.sidebar { display: flex; flex-direction: column; gap: 2.25rem; }
@media (min-width: 960px) { .sidebar { position: sticky; top: 5.5rem; align-self: start; } }
.side-title { font-size: 0.85rem; font-weight: 600; color: var(--graphite); margin: 0 0 0.75rem; letter-spacing: 0.02em; }
.profile { background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; padding: 1.25rem; }
.profile .name { font-family: var(--serif); font-size: 1.3rem; font-weight: 700; margin: 0; }
.profile .role { margin: 0.15rem 0 0.75rem; font-size: 0.85rem; color: var(--graphite); }
.profile p { margin: 0 0 1rem; font-size: 0.9rem; line-height: 1.65; }
.profile .book-mini { display: grid; grid-template-columns: 3.25rem 1fr; gap: 0.75rem; align-items: center; padding-top: 1rem; border-top: 1px solid var(--rule); text-decoration: none; color: var(--ink); font-size: 0.85rem; line-height: 1.5; }
.profile .book-mini img { width: 100%; border-radius: 2px; box-shadow: 0 1px 3px rgb(0 0 0 / 0.15); }
.profile .book-mini span { color: var(--graphite); display: block; font-size: 0.78rem; }
.profile .book-mini:hover strong { color: var(--slate); }

/* category index — keeps the book-index leaders */
.index { list-style: none; margin: 0; padding: 0; font-size: 0.93rem; }
.index a { display: flex; align-items: baseline; gap: 0.5rem; padding: 0.3rem 0; color: var(--ink); text-decoration: none; }
.index .leader { flex: 1; border-bottom: 1px dotted var(--graphite); opacity: 0.5; transform: translateY(-0.3em); min-width: 1rem; }
.index .count { font-size: 0.85rem; color: var(--graphite); font-variant-numeric: tabular-nums; }
.index a:hover .term, .index a[aria-current='page'] .term { box-shadow: inset 0 -0.4em 0 var(--mark); }
.side-list { list-style: none; margin: 0; padding: 0; font-size: 0.93rem; display: grid; gap: 0.5rem; }
.side-list a { color: var(--ink); text-decoration: none; }
.side-list a:hover { color: var(--slate); }
.side-list span { color: var(--graphite); font-size: 0.82rem; margin-left: 0.35rem; }

/* ── page heads ─────────────────────────── */
.page-head { padding: 3rem 0 1.5rem; max-width: var(--measure); }
.page-head h1 { font-size: clamp(1.75rem, 4vw, 2.25rem); margin: 0 0 0.5rem; }
.page-head p { margin: 0; color: var(--graphite); }
.meta { font-size: 0.85rem; color: var(--graphite); }
.section-title { font-size: 1.2rem; margin: 0 0 1rem; }

/* compact list (archive, series) */
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { padding: 0.9rem 0; border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: 0.15rem 1.25rem; }
.post-list time { font-size: 0.85rem; color: var(--graphite); padding-top: 0.15rem; font-variant-numeric: tabular-nums; }
.post-list a { color: var(--ink); text-decoration: none; font-weight: 500; }
.post-list a:hover { color: var(--slate); }
.post-list .sub { grid-column: 2; margin: 0; font-size: 0.9rem; color: var(--graphite); }
@media (max-width: 560px) { .post-list li { grid-template-columns: 1fr; } .post-list .sub { grid-column: 1; } }
.year { font-size: 1rem; font-weight: 600; color: var(--graphite); margin: 2.5rem 0 0.25rem; }

/* ── article ────────────────────────────── */
.article { max-width: var(--measure); margin: 0 auto; padding-top: 3rem; }
.article-head h1 { font-size: clamp(1.7rem, 4.5vw, 2.35rem); margin: 0.6rem 0 0.9rem; }
.article-cover { margin: 0 0 2rem; border-radius: 6px; overflow: hidden; border: 1px solid var(--rule); }
.article-cover img { display: block; width: 100%; }
.prose { font-family: var(--serif); font-size: 1.1rem; line-height: 1.95; margin-top: 2rem; }
.prose h2, .prose h3, .prose h4 { font-family: var(--sans); }
.prose h2 { font-size: 1.35rem; margin: 2.75rem 0 0.75rem; }
.prose h3, .prose h4 { font-size: 1.12rem; margin: 2.25rem 0 0.5rem; }
.prose p { margin: 0 0 1.2rem; }
.prose img { display: block; margin: 2rem auto; border-radius: 4px; }
.prose blockquote { margin: 1.75rem 0; padding: 0.25rem 0 0.25rem 1.25rem; border-left: 3px solid var(--mark); color: var(--graphite); }
.prose ul { padding-left: 1.25rem; }
.prose li { margin: 0.3rem 0; }
.prose table { border-collapse: collapse; font-family: var(--sans); font-size: 0.9rem; display: block; overflow-x: auto; }
.prose td, .prose th { border: 1px solid var(--rule); padding: 0.4rem 0.6rem; }

.author-box { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1.25rem; align-items: center; margin: 3.5rem 0 0; padding: 1.25rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; font-size: 0.9rem; }
.author-box strong { font-family: var(--serif); font-size: 1.1rem; }
.author-box p { margin: 0.25rem 0 0; color: var(--graphite); line-height: 1.6; }
.author-box img { width: 3.5rem; border-radius: 2px; box-shadow: 0 1px 3px rgb(0 0 0 / 0.15); }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); font-size: 0.95rem; }
.post-nav a { color: var(--ink); text-decoration: none; font-weight: 500; }
.post-nav a:hover { color: var(--slate); }
.post-nav span { display: block; font-size: 0.8rem; color: var(--graphite); font-weight: 400; }
.post-nav .next { text-align: right; }
.origin { font-size: 0.85rem; color: var(--graphite); margin-top: 2rem; }

/* ── about / book ───────────────────────── */
.book { display: grid; grid-template-columns: minmax(8rem, 12rem) minmax(0, 1fr); gap: 2rem; align-items: start; }
.book img { width: 100%; border-radius: 2px; box-shadow: 0 2px 10px rgb(0 0 0 / 0.15); }
.book h3 { margin: 0 0 0.2rem; font-size: 1.5rem; }
.book .subtitle { margin: 0 0 1rem; color: var(--graphite); }
.book .lead { font-family: var(--serif); font-size: 1.15rem; margin: 0 0 1rem; padding-left: 1rem; border-left: 3px solid var(--mark); }
.book .about p { font-family: var(--serif); margin: 0 0 0.9rem; line-height: 1.85; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr)); gap: 0.75rem 1.25rem; margin: 1.5rem 0; padding: 1rem 0; border-block: 1px solid var(--rule); font-size: 0.85rem; }
.facts dt { color: var(--graphite); }
.facts dd { margin: 0; }
.button { display: inline-block; font-size: 0.95rem; font-weight: 500; padding: 0.6rem 1.1rem; border: 1px solid var(--ink); color: var(--ink); text-decoration: none; border-radius: 4px; }
.button:hover { background: var(--mark); color: var(--mark-ink); border-color: var(--mark); }
@media (max-width: 600px) { .book { grid-template-columns: 1fr; } .book img { max-width: 11rem; } }

/* ── footer ─────────────────────────────── */
.colophon { margin-top: 5rem; border-top: 1px solid var(--rule); font-size: 0.85rem; color: var(--graphite); }
.colophon .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; padding-block: 1.5rem 3rem; }
.colophon p { margin: 0; }
.colophon a { color: var(--graphite); }