:root {
  --bg: #f6f7f9;
  --fg: #1d2025;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #5b5bd6;
  --on-accent: #ffffff;
  --claude: #d97757;
  --card: #ffffff;
  --room-bg: #bfd1e2;
  --room-bar: #aec3d7;
  --bubble-ai: #ffffff;
  --bubble-ai-fg: #1d2025;
  --bubble-me: #fee500;
  --bubble-me-fg: #191919;
  --code-bg: #f3f4f6;
  --code-bg-me: rgba(0, 0, 0, .07);
  --chip-bg: rgba(255, 255, 255, .55);
  --divider-bg: rgba(0, 0, 0, .14);
  --divider-fg: #fff;
  --shadow: 0 1px 1px rgba(0, 0, 0, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --fg: #e7e9ec;
    --muted: #9aa1ab;
    --line: #262a31;
    --accent: #8b8cf0;
    --on-accent: #111317;
    --claude: #e8916f;
    --card: #181b20;
    --room-bg: #1a1f26;
    --room-bar: #222831;
    --bubble-ai: #2a3038;
    --bubble-ai-fg: #e7e9ec;
    --bubble-me: #e6cf2e;
    --bubble-me-fg: #191919;
    --code-bg: #1e2329;
    --code-bg-me: rgba(0, 0, 0, .12);
    --chip-bg: rgba(255, 255, 255, .07);
    --divider-bg: rgba(255, 255, 255, .08);
    --divider-fg: #b6bcc5;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a { color: inherit; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .88em; }

.site-header, .site-footer, .post, .home, .page { max-width: 820px; margin: 0 auto; padding: 0 16px; }
.site-header { padding-top: 28px; padding-bottom: 8px; }
.brand { display: inline-flex; align-items: center; gap: 7px; font-weight: 800; font-size: 20px; text-decoration: none; letter-spacing: -.02em; }
.logo { width: 22px; height: 22px; flex: none; }
.site-footer { padding-top: 48px; padding-bottom: 48px; color: var(--muted); font-size: 14px; }
.site-footer a { text-decoration: none; }

/* ---------- home */
.lede { color: var(--muted); margin: 4px 0 28px; }
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.card a {
  display: block; text-decoration: none; background: var(--card);
  border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px;
  transition: border-color .15s, transform .15s;
}
.card a:hover { border-color: var(--accent); transform: translateY(-1px); }
.card time { color: var(--muted); font-size: 13px; }
.card h2 { margin: 4px 0 6px; font-size: 20px; line-height: 1.4; letter-spacing: -.02em; }
.card p { margin: 0 0 10px; color: var(--muted); font-size: 15px; }
.empty { color: var(--muted); }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 12px; padding: 2px 9px; border-radius: 999px; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); font-weight: 600; }

/* ---------- post head */
.post-head { padding: 28px 0 8px; }
.post-head h1 { font-size: clamp(26px, 5vw, 36px); line-height: 1.3; letter-spacing: -.03em; margin: 12px 0 8px; }
.meta { color: var(--muted); font-size: 14px; margin: 0; }
.summary { font-size: 17px; color: var(--muted); margin: 14px 0 0; }

.prose { margin: 24px 0; }
.prose h2 { font-size: 22px; letter-spacing: -.02em; margin: 40px 0 12px; }
.prose pre { background: var(--code-bg); padding: 14px 16px; border-radius: 10px; overflow-x: auto; }
.prose :not(pre) > code { background: var(--code-bg); padding: 1px 5px; border-radius: 5px; }

/* ---------- chat room */
.room { background: var(--room-bg); border-radius: 22px; overflow: hidden; margin: 28px 0; }
.room-bar {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px 18px; background: var(--room-bar); font-size: 14px;
}
.room-title { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.room-people { color: var(--muted); white-space: nowrap; }
@media (prefers-color-scheme: light) { .room-people { color: #4b5563; } }
.chat { padding: 14px 14px 22px; display: flex; flex-direction: column; gap: 6px; }

.divider { text-align: center; margin: 10px 0; }
.divider span { display: inline-block; font-size: 12px; padding: 3px 12px; border-radius: 999px; background: var(--divider-bg); color: var(--divider-fg); }

.row { display: flex; gap: 8px; align-items: flex-start; }
.row:not(.cont) { margin-top: 10px; }
.row.user { justify-content: flex-end; }
.col { display: flex; flex-direction: column; min-width: 0; max-width: min(88%, 680px); }
.row.user .col { align-items: flex-end; max-width: min(80%, 600px); }

.avatar {
  flex: none; width: 40px; height: 40px; border-radius: 14px; display: grid; place-items: center;
  font-size: 18px; font-weight: 700; overflow: hidden;
}
.avatar.assistant { background: var(--claude); color: #fff; }
.avatar.spacer { visibility: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.name { font-size: 13px; margin: 0 0 4px 2px; font-weight: 600; }

.bubble {
  padding: 10px 14px; border-radius: 16px; box-shadow: var(--shadow);
  font-size: 15px; line-height: 1.65; max-width: 100%;
}
.row.assistant .bubble { background: var(--bubble-ai); color: var(--bubble-ai-fg); border-top-left-radius: 4px; }
.row.assistant.cont .bubble { border-top-left-radius: 16px; }
.row.user .bubble { background: var(--bubble-me); color: var(--bubble-me-fg); border-top-right-radius: 4px; }
.row.user.cont .bubble { border-top-right-radius: 16px; }

.bubble > :first-child { margin-top: 0; }
.bubble > :last-child { margin-bottom: 0; }
.bubble p { margin: .5em 0; }
.bubble ul, .bubble ol { padding-left: 1.3em; margin: .5em 0; }
.bubble h1, .bubble h2, .bubble h3, .bubble h4 { font-size: 1.02em; margin: 1em 0 .4em; }
.bubble blockquote { margin: .6em 0; padding: 2px 12px; border-left: 3px solid var(--line); color: var(--muted); }
.row.user .bubble blockquote { border-color: rgba(0, 0, 0, .2); color: inherit; opacity: .8; }
.bubble pre { background: var(--code-bg); padding: 12px 14px; border-radius: 10px; overflow-x: auto; margin: .6em 0; }
.bubble pre code.hljs { background: transparent; padding: 0; }
.bubble :not(pre) > code { background: var(--code-bg); padding: 1px 5px; border-radius: 5px; }
.row.user .bubble pre, .row.user .bubble :not(pre) > code { background: var(--code-bg-me); }
.bubble table { display: block; overflow-x: auto; border-collapse: collapse; margin: .6em 0; font-size: 14px; }
.bubble th, .bubble td { border: 1px solid var(--line); padding: 5px 10px; }
.bubble img { max-width: 100%; border-radius: 8px; }
.bubble hr { border: 0; border-top: 1px solid var(--line); }

.ts { font-size: 11px; color: var(--muted); margin: 3px 4px 0; }
@media (prefers-color-scheme: light) { .ts { color: #52606d; } }

.tools { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 5px; }
.chip { font-size: 11.5px; padding: 2px 8px; border-radius: 999px; background: var(--chip-bg); }

.link-card { display: flex; flex-direction: column; gap: 2px; text-decoration: none; min-width: 220px; }
.lc-kicker { font-size: 12px; opacity: .7; }
.lc-title { font-size: 15.5px; line-height: 1.45; }
.lc-meta, .lc-host { font-size: 12.5px; opacity: .7; }

.article { margin: 24px 0; border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; background: var(--card); }
.article summary { cursor: pointer; font-weight: 600; }

@media (max-width: 560px) {
  .room { margin-left: -8px; margin-right: -8px; border-radius: 16px; }
  .chat { padding: 10px 8px 18px; }
  .avatar { width: 34px; height: 34px; border-radius: 12px; font-size: 15px; }
  .col { max-width: calc(100% - 42px); }
  .row.user .col { max-width: 88%; }
}

/* 노란 말풍선 안의 코드는 테마와 무관하게 어두운 글자로 */
.row.user .bubble pre code.hljs, .row.user .bubble pre code.hljs * { color: var(--bubble-me-fg) !important; }

/* ---------- 공통 헤더·푸터 */
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.nav { display: flex; gap: 16px; font-size: 14px; }
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover { color: var(--fg); }
.footer-links a:hover { color: var(--fg); }
.copyright { margin: 6px 0 0; font-size: 13px; }

/* ---------- 정적 페이지 (소개, 개인정보처리방침) */
.page { padding-top: 20px; padding-bottom: 8px; margin: 0 auto; }
.page h1 { font-size: clamp(26px, 5vw, 34px); letter-spacing: -.03em; margin: 12px 0 8px; }
.page .lede { font-size: 17px; color: var(--muted); }
.page h2 { font-size: 19px; margin: 36px 0 10px; }
.page ul, .page ol { padding-left: 1.3em; }
.page li { margin: 4px 0; }
.page a { color: var(--accent); }
.page table { display: block; overflow-x: auto; border-collapse: collapse; font-size: 14px; margin: 12px 0; }
.page th, .page td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
.page th { background: var(--card); white-space: nowrap; }

/* ---------- 목록 페이징 */
.card[hidden] { display: none; }
.pager { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 22px 0 0; font-size: 14px; color: var(--muted); }
.pager[hidden] { display: none; }
.pager-size select {
  margin-left: 6px; font: inherit; color: var(--fg); background: var(--card);
  border: 1px solid var(--line); border-radius: 8px; padding: 4px 8px;
}
.pager-pages { display: flex; flex-wrap: wrap; gap: 4px; }
.pager-pages button {
  min-width: 34px; height: 34px; padding: 0 8px; font: inherit; color: var(--fg); cursor: pointer;
  background: var(--card); border: 1px solid var(--line); border-radius: 9px;
}
.pager-pages button:hover:not(:disabled) { border-color: var(--accent); }
.pager-pages button[aria-current="page"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 700; }
.pager-pages button:disabled { opacity: .35; cursor: default; }
.pager-gap { display: inline-grid; place-items: center; min-width: 20px; }
h1.lede { font-size: 16px; font-weight: 400; letter-spacing: 0; line-height: 1.7; }