/* afkdesk — 모던 에디토리얼 스타일 (프레임워크 없음, 모바일 우선, 라이트/다크) */

:root {
  --max-width: 760px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "D2Coding", Consolas,
    "Liberation Mono", Menlo, monospace;

  /* light */
  --bg: #fbfbfa;
  --surface: #ffffff;
  --text: #1c1e21;
  --muted: #6b7280;
  --accent: #4f46e5;
  --accent-soft: #eef2ff;
  --border: #e8e8e6;
  --code-bg: #1e2029;
  --code-text: #e6e6ef;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f14;
    --surface: #14171d;
    --text: #e7e9ee;
    --muted: #9aa0ac;
    --accent: #8b8cf5;
    --accent-soft: #1c1e2b;
    --border: #23262f;
    --code-bg: #0a0b0f;
    --code-text: #e0e2ec;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.75;
  font-size: 17px;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
}

/* ── 헤더 ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  flex-wrap: wrap;
}
.site-title {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.site-title::before {
  content: ">_";
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  padding: 3px 7px;
  border-radius: 7px;
  letter-spacing: 0;
}
.site-header nav { display: flex; gap: 18px; font-size: 14.5px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-weight: 500; transition: color .15s; }
.site-header nav a:hover { color: var(--accent); }

/* ── 본문 컨테이너 ── */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 72px;
}

/* ── 홈 히어로 ── */
.hero { margin-bottom: 40px; }
.hero h1 {
  font-size: 34px;
  line-height: 1.25;
  font-weight: 820;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}
.hero p { color: var(--muted); font-size: 18px; margin: 0; max-width: 62ch; }

/* ── 글 목록 (카드) ── */
.post-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.post-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.post-list li:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}
.post-list li a { text-decoration: none; display: block; margin-bottom: 6px; }
.post-list li .card-title {
  font-size: 19px; font-weight: 700; letter-spacing: -0.02em;
  color: var(--text); display: block; margin-top: 10px;
}
.post-list li:hover .card-title { color: var(--accent); }
.post-list li p { color: var(--muted); font-size: 15px; margin: 0; line-height: 1.6; }

/* ── 카테고리 배지 ── */
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 3px 10px;
  border-radius: 999px;
  vertical-align: middle;
}
.badge-story { background: #fce7f3; color: #9d174d; }
.badge-tutorial { background: var(--accent-soft); color: var(--accent); }
@media (prefers-color-scheme: dark) {
  .badge-story { background: #3b1226; color: #f9a8d4; }
}

/* ── 글 상단 킥커 ── */
.post-kicker { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.post-kicker .read-time { color: var(--muted); font-size: 13.5px; }

/* ── 이전/다음 글 네비 ── */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 48px 0 24px;
}
.post-nav a {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 14.5px;
  line-height: 1.4;
  transition: border-color .16s, transform .16s;
}
.post-nav a:hover { border-color: var(--accent); transform: translateY(-2px); }
.post-nav a span { color: var(--muted); font-size: 12.5px; font-weight: 500; }
.post-nav .pn-next { text-align: right; grid-column: 2; }
.post-nav .pn-prev { grid-column: 1; }

.back-link {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
}
.back-link:hover { color: var(--accent); }

@media (max-width: 640px) {
  .post-nav { grid-template-columns: 1fr; }
  .post-nav .pn-next, .post-nav .pn-prev { grid-column: 1; text-align: left; }
}

/* ── 도식(다이어그램) ── */
figure.diagram {
  margin: 28px 0;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  text-align: center;
  overflow-x: auto;
}
figure.diagram svg { max-width: 100%; height: auto; }
figure.diagram figcaption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13.5px;
}

/* ── 아티클 타이포그래피 ── */
article { font-size: 17.5px; }
article h1 {
  font-size: 32px;
  line-height: 1.25;
  font-weight: 820;
  letter-spacing: -0.03em;
  margin: 0 0 28px;
}
article h2 {
  font-size: 23px;
  font-weight: 750;
  letter-spacing: -0.02em;
  margin: 48px 0 16px;
  padding-top: 8px;
}
article h3 { font-size: 19px; font-weight: 700; margin: 32px 0 12px; }
article p { margin: 0 0 20px; }
article a { color: var(--accent); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
article a:hover { border-bottom-color: var(--accent); }
article ul, article ol { margin: 0 0 20px; padding-left: 24px; }
article li { margin: 6px 0; }
article strong { font-weight: 700; }
article hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
article em { color: var(--muted); }
article blockquote {
  margin: 24px 0;
  padding: 4px 20px;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
}

/* ── 코드 ── */
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 5px;
}
pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 20px 22px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 0 0 24px;
  line-height: 1.6;
  font-size: 14.5px;
  border: 1px solid rgba(255,255,255,.06);
}
pre code { background: none; color: inherit; padding: 0; font-size: inherit; border-radius: 0; }

/* ── 표 ── */
article table {
  display: block;
  overflow-x: auto;
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 24px;
  font-size: 15.5px;
}
article th, article td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
article th { font-weight: 700; background: var(--accent-soft); }
article tr:last-child td { border-bottom: none; }

/* ── 푸터 ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px 48px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.site-footer nav { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 12px; }
.site-footer nav a { color: var(--muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--accent); }
.site-footer p { margin: 0; }

/* ── 반응형 ── */
@media (max-width: 640px) {
  body { font-size: 16px; }
  main { padding: 32px 18px 56px; }
  .hero h1 { font-size: 27px; }
  article h1 { font-size: 26px; }
  article h2 { font-size: 20px; }
  .site-header { padding: 12px 18px; }
}