/* zupzup blog — reading-first layout. Dark theme aligned with the site
   (theme-color #0a0a0a). Single comfortable reading column; tables, quotes,
   code, and the tool CTA styled for long-form articles. */

:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --border: #262626;
  --text: #ededed;
  --muted: #9a9a9a;
  --accent: #d4f24a; /* zupzup lime */
  --link: #c7e85f;
  --reading: 44rem;
}

* {
  box-sizing: border-box;
}

/* skip link (WCAG 2.4.1) — off-screen until focused */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}
.skip-link:focus {
  left: 12px;
  top: 12px;
  z-index: 100;
  background: var(--accent);
  color: #0a0a0a;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', 'Pretendard',
    'Noto Sans KR', Roboto, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: var(--reading);
  margin: 0 auto;
  padding: 0 1.25rem 5rem;
}

/* top nav: home/blog + language toggle */
.blog-topnav {
  max-width: var(--reading);
  margin: 0 auto;
  padding: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
}
.blog-topnav a {
  color: var(--muted);
  text-decoration: none;
}
.blog-topnav a:hover {
  color: var(--text);
}
.blog-lang {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
}
.blog-lang:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
}

/* article */
.blog-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 1.5rem;
}

.blog-article h1 {
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 1.5rem;
}
.blog-article h2 {
  font-size: 1.4rem;
  line-height: 1.3;
  margin: 2.75rem 0 0.75rem;
  padding-top: 0.5rem;
}
.blog-article h3 {
  font-size: 1.125rem;
  margin: 2rem 0 0.5rem;
}

.blog-article p {
  margin: 0 0 1.25rem;
}

.blog-article a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.blog-article a:hover {
  color: var(--accent);
}

.blog-article strong {
  color: #fff;
  font-weight: 650;
}
.blog-article em {
  font-style: italic;
  color: #f2f2f2;
}

.blog-article code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.875em;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;
}

.blog-article ul,
.blog-article ol {
  margin: 0 0 1.25rem;
  padding-left: 1.4rem;
}
.blog-article li {
  margin: 0.35rem 0;
}

.blog-article blockquote {
  margin: 1.5rem 0;
  padding: 0.5rem 0 0.5rem 1.1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}
.blog-article blockquote p:last-child {
  margin-bottom: 0;
}

.blog-article hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

/* tables */
.blog-article table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
  display: block;
  overflow-x: auto;
}
.blog-article th,
.blog-article td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.75rem;
  text-align: left;
  vertical-align: top;
}
.blog-article th {
  background: var(--surface);
  color: #fff;
  font-weight: 600;
}

/* references / 출처 */
.blog-refs {
  margin: 3rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.blog-refs h2 {
  font-size: 1.05rem;
  margin: 0 0 0.75rem;
  color: var(--muted);
}
.blog-refs ol {
  margin: 0;
  padding-left: 1.4rem;
}
.blog-refs li {
  margin: 0.4rem 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted);
}
.blog-refs a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-word;
}
.blog-refs a:hover {
  color: var(--accent);
}

/* tool CTA */
.blog-cta {
  margin: 3.5rem 0 1.5rem;
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
}
.blog-cta p {
  margin: 0 0 1rem;
  color: var(--text);
}
.blog-cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 600;
  text-decoration: none;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
}
.blog-cta-btn:hover {
  filter: brightness(1.08);
}

.blog-back {
  margin-top: 1rem;
}
.blog-back a {
  color: var(--muted);
  text-decoration: none;
}
.blog-back a:hover {
  color: var(--text);
}

/* index */
.blog-index-head {
  margin: 1rem 0 2.5rem;
}
.blog-index-head h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  margin: 0 0 0.5rem;
}
.blog-index-head p {
  color: var(--muted);
  margin: 0;
}

.blog-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.blog-index-item {
  border-top: 1px solid var(--border);
}
.blog-index-item:last-child {
  border-bottom: 1px solid var(--border);
}
.blog-index-link {
  display: block;
  padding: 1.5rem 0 0.5rem;
  text-decoration: none;
  color: inherit;
}
.blog-index-link h2 {
  margin: 0 0 0.4rem;
  font-size: 1.3rem;
  color: var(--text);
}
.blog-index-link:hover h2 {
  color: var(--accent);
}
.blog-index-link p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.blog-index-meta {
  margin: 0.5rem 0 1.25rem;
  font-size: 0.8rem;
  color: #6f6f6f;
}
.blog-index-meta a {
  color: var(--link);
  text-decoration: none;
}
.blog-index-meta a:hover {
  color: var(--accent);
}

/* footer — 메인 랜딩의 매거진 콜로폰과 동일 톤 (블로그 토큰으로 매핑) */
.blog-footer {
  max-width: var(--reading);
  margin: 0 auto;
  padding: 36px 1.25rem 40px;
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-label {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}
.footer-label-ko {
  font-family: inherit;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text);
  margin-right: 2px;
}
.footer-value {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;
  font-size: 12px;
  color: var(--text);
}
a.footer-value {
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}
a.footer-value:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.footer-bottom {
  text-align: left;
  padding-top: 18px;
  border-top: 1px dashed var(--border);
}
.colophon-line {
  margin: 0 0 6px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.colophon-mark {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  letter-spacing: 0.01em;
  text-decoration: none;
}
.colophon-mark:hover {
  color: var(--accent);
}
.colophon-sep {
  font-family: ui-monospace, monospace;
  font-size: 12px;
  color: var(--muted);
}
.colophon-issue {
  font-family: ui-monospace, monospace;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}
.colophon-meta {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}
.colophon-meta a {
  color: var(--text);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}
.colophon-meta a:hover {
  color: var(--accent);
  border-color: currentColor;
}
@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}