/* dodaseo.cc — 양연동 (교사·교육사회학 연구자)
   Academic / editorial design system. Light default + dark toggle. */

:root{
  /* light (default) — warm paper */
  --bg:#fbfaf6; --bg2:#f3f0e8; --card:#ffffff;
  --fg:#1f2328; --muted:#586070; --faint:#8b8f99;
  --line:#e6e2d8; --line2:#d9d4c7;
  --accent:#2f5d7c;        /* scholarly ink-blue */
  --accent-soft:#3a6e90;
  --warm:#9a6a4f;          /* restrained clay highlight */
  --accent3:#2f8a86;       /* teal — modern gradient accent */
  --sel:#dce8f0;
  --serif:"Noto Serif KR",Nanum Myeongjo,Georgia,"Times New Roman",serif;
  --sans:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",sans-serif;
  --maxw:760px; --wide:980px;
}
:root[data-theme="dark"]{
  --bg:#15171c; --bg2:#1d2026; --card:#1c1f25;
  --fg:#e8e6df; --muted:#a6abb4; --faint:#7b818b;
  --line:#2a2e36; --line2:#343943;
  --accent:#86b4d6; --accent-soft:#9ec6e3; --warm:#c89a82; --accent3:#6fc7c0; --sel:#26323c;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme]){
    --bg:#15171c; --bg2:#1d2026; --card:#1c1f25;
    --fg:#e8e6df; --muted:#a6abb4; --faint:#7b818b;
    --line:#2a2e36; --line2:#343943;
    --accent:#86b4d6; --accent-soft:#9ec6e3; --warm:#c89a82; --accent3:#6fc7c0; --sel:#26323c;
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font-family:var(--sans); font-size:17px; line-height:1.75;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  transition:background .4s ease, color .4s ease;
  word-break:keep-all; overflow-wrap:break-word;   /* 한국어: 어절 단위 줄바꿈 (이름·고유명사 중간 끊김 방지) */
}
::selection{background:var(--sel)}
a{color:inherit; text-decoration:none}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px}
.wrap.wide{max-width:var(--wide)}
.serif{font-family:var(--serif)}

/* ---- nav ---- */
.nav{position:sticky; top:0; z-index:50; background:color-mix(in oklab,var(--bg) 88%,transparent);
  backdrop-filter:saturate(120%) blur(8px); border-bottom:1px solid var(--line)}
.nav .row{display:flex; align-items:center; justify-content:space-between; height:62px; max-width:var(--wide); margin:0 auto; padding:0 24px}
.nav .brand{font-family:var(--serif); font-weight:600; font-size:1.18rem; letter-spacing:.01em}
.nav .brand small{font-family:var(--sans); font-weight:400; color:var(--faint); font-size:.72rem; margin-left:8px; letter-spacing:.02em}
.nav .links{display:flex; align-items:center; gap:24px}
.nav .links a{font-size:.92rem; color:var(--muted)} .nav .links a:hover{color:var(--fg)}
@media (max-width:600px){.nav .links a:not(.theme-toggle){display:none}}

.theme-toggle{display:inline-grid; place-items:center; width:36px; height:36px; border-radius:50%;
  border:1px solid var(--line2); background:transparent; color:var(--muted); cursor:pointer; transition:.2s}
.theme-toggle:hover{color:var(--fg); border-color:var(--accent)}
.theme-toggle svg{width:17px; height:17px}
.theme-toggle .moon{display:none} :root[data-theme="dark"] .theme-toggle .sun{display:none}
:root[data-theme="dark"] .theme-toggle .moon{display:block}
@media (prefers-color-scheme:dark){:root:not([data-theme]) .theme-toggle .sun{display:none} :root:not([data-theme]) .theme-toggle .moon{display:block}}

/* ---- hero ---- */
.hero{padding:clamp(56px,10vw,104px) 0 clamp(40px,6vw,64px)}
.eyebrow{font-size:.82rem; letter-spacing:.14em; text-transform:uppercase; color:var(--accent); font-weight:600}
.hero h1{font-family:var(--serif); font-weight:700; font-size:clamp(2.8rem,7vw,4.4rem); line-height:1.05; letter-spacing:-.01em; margin:.35em 0 0}
.hero .romaja{color:var(--faint); font-size:.98rem; margin-top:.7em; letter-spacing:.03em}
.hero .lead{font-size:1.18rem; color:var(--muted); margin-top:1.1em; max-width:34em}
.hero-lead{font-family:var(--serif); font-weight:500; font-size:clamp(1.35rem,3.3vw,2.05rem); line-height:1.5; letter-spacing:-.01em; color:var(--fg); margin:0; max-width:23em}
.hero-lead em{color:var(--warm); font-style:normal}
.hero-by{margin-top:1.6em; color:var(--muted); font-size:1rem; letter-spacing:.01em}
.hero-by .nm{color:var(--fg); font-weight:600; font-family:var(--serif)}
.hero .cta{display:flex; flex-wrap:wrap; gap:12px; margin-top:2em}

.btn{display:inline-flex; align-items:center; gap:8px; padding:11px 20px; border-radius:8px; font-size:.95rem; font-weight:500;
  border:1px solid var(--line2); color:var(--fg); background:var(--card); transition:.18s}
.btn:hover{border-color:var(--accent); color:var(--accent); transform:translateY(-1px)}
.btn.primary{background:var(--accent); color:#fff; border-color:var(--accent)}
.btn.primary:hover{background:var(--accent-soft); color:#fff; border-color:var(--accent-soft)}

/* ---- section scaffolding ---- */
section{padding:clamp(40px,7vw,72px) 0}
.divider{border:0; border-top:1px solid var(--line); margin:0}
.kicker{font-size:.78rem; letter-spacing:.15em; text-transform:uppercase; color:var(--accent); font-weight:600}
h2{font-family:var(--serif); font-weight:600; font-size:clamp(1.7rem,4vw,2.2rem); letter-spacing:-.01em; margin:.4rem 0 0}
.sub{color:var(--muted); margin-top:.5rem}
p{margin:0 0 1.1em} .lead-p{font-size:1.08rem}

/* about / profile */
.about p{color:var(--fg)} .about em{color:var(--warm); font-style:normal; font-weight:500}
.profile{margin-top:1.6em; border-top:1px solid var(--line)}
.profile .row{display:flex; gap:18px; padding:13px 0; border-bottom:1px solid var(--line); font-size:.96rem}
.profile .row dt{flex:0 0 96px; color:var(--faint); margin:0}
.profile .row dd{margin:0; color:var(--fg); font-weight:500}

.tags{display:flex; flex-wrap:wrap; gap:8px; margin-top:1.4em}
.tag{font-size:.84rem; color:var(--muted); border:1px solid var(--line2); border-radius:999px; padding:5px 13px; background:var(--bg2)}

/* research themes — editorial numbered list */
.themes{margin-top:1.8em; border-top:1px solid var(--line)}
.theme{display:grid; grid-template-columns:54px 1fr; gap:20px; padding:24px 0; border-bottom:1px solid var(--line)}
.theme .no{font-family:var(--serif); font-size:1.4rem; color:var(--accent); line-height:1}
.theme h3{font-family:var(--serif); font-weight:600; font-size:1.25rem; margin:0 0 .35em}
.theme p{margin:0; color:var(--muted)}

/* metrics */
.metrics{display:flex; gap:38px; flex-wrap:wrap; margin:1.6em 0 .4em}
.metric b{font-family:var(--serif); display:block; font-size:2.1rem; font-weight:600; line-height:1}
.metric span{color:var(--faint); font-size:.84rem}

/* publications */
.pubs{margin-top:1.6em; border-top:1px solid var(--line)}
.pub{display:grid; grid-template-columns:78px 1fr; gap:18px; padding:22px 0; border-bottom:1px solid var(--line)}
.pub .yr{color:var(--accent); font-weight:600; font-variant-numeric:tabular-nums; font-size:.9rem}
.pub h4{font-family:var(--serif); font-weight:600; margin:0 0 .4em; font-size:1.12rem; line-height:1.5}
.pub .meta{color:var(--muted); font-size:.92rem; margin:0}
.pub .badge{display:inline-block; margin-top:.7em; margin-right:6px; font-size:.74rem; padding:3px 10px; border-radius:999px; border:1px solid var(--line2); color:var(--muted)}
.pub .badge.star{color:var(--warm); border-color:color-mix(in oklab,var(--warm) 55%,var(--line2))}

/* blog list (게시판) */
.postlist{margin-top:1.6em; border-top:1px solid var(--line)}
.postitem{display:block; padding:24px 0; border-bottom:1px solid var(--line); transition:.15s}
.postitem:hover h3{color:var(--accent)}
.postitem .pmeta{color:var(--faint); font-size:.84rem; letter-spacing:.02em}
.postitem h3{font-family:var(--serif); font-weight:600; font-size:1.3rem; margin:.3em 0; line-height:1.4; transition:.15s}
.postitem p{margin:0; color:var(--muted); font-size:.96rem}
.postitem .cat{color:var(--accent); font-weight:500}

/* knowledge graph (그래프 뷰) */
.graphwrap{position:relative; margin:1.6em auto .4em; width:min(100%,760px); aspect-ratio:1/1; border:1px solid var(--line); border-radius:var(--r); background:var(--bg2); overflow:hidden}
.graphwrap canvas{width:100%; height:100%; display:block}
.graphcap{position:absolute; left:14px; bottom:10px; font-size:.76rem; color:var(--faint); pointer-events:none}

/* post (prose) */
.post-header{padding:clamp(40px,7vw,72px) 0 0}
.post-header .pmeta{color:var(--faint); font-size:.86rem; letter-spacing:.02em}
.post-header h1{font-family:var(--serif); font-weight:700; font-size:clamp(2rem,5vw,2.9rem); line-height:1.25; margin:.4em 0 0; letter-spacing:-.01em}
.prose{font-size:1.08rem; line-height:1.85; padding:2em 0 0}
.prose h2{font-size:1.45rem; margin:1.8em 0 .5em} .prose h3{font-family:var(--serif); font-size:1.2rem; margin:1.5em 0 .4em}
.prose p{margin:0 0 1.2em} .prose a{color:var(--accent); text-decoration:underline; text-underline-offset:3px}
.prose blockquote{margin:1.5em 0; padding:.3em 0 .3em 1.2em; border-left:3px solid var(--accent); color:var(--muted); font-style:italic}
.prose ul,.prose ol{margin:0 0 1.2em; padding-left:1.3em} .prose li{margin:.3em 0}
.prose code{background:var(--bg2); border:1px solid var(--line); border-radius:5px; padding:.1em .4em; font-size:.9em}
.prose hr{border:0; border-top:1px solid var(--line); margin:2em 0}
.backlink{display:inline-flex; gap:7px; align-items:center; color:var(--muted); font-size:.9rem; margin-top:2.5em}
.backlink:hover{color:var(--accent)}

/* contact */
.contact .cta{justify-content:flex-start}

/* footer */
footer{border-top:1px solid var(--line); padding:36px 0; color:var(--faint); font-size:.85rem}
footer .row{display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap; max-width:var(--wide); margin:0 auto; padding:0 24px}

/* reveal */
.reveal{opacity:0; transform:translateY(14px); transition:opacity .7s ease, transform .7s ease}
.reveal.in{opacity:1; transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1; transform:none; transition:none}}

/* ---- modern/visual hero + elevated cards ---- */
.hero.modern{position:relative; overflow:hidden}
.hero.modern .blob{position:absolute; z-index:-1; inset:-25% -10% auto -10%; height:150%; pointer-events:none; opacity:.45;
  background:
    radial-gradient(38vmax 26vmax at 18% 8%, color-mix(in oklab,var(--accent) 30%,transparent), transparent 62%),
    radial-gradient(34vmax 26vmax at 92% -2%, color-mix(in oklab,var(--accent3) 26%,transparent), transparent 62%);
  filter:blur(6px)}
.hero-grid{display:grid; grid-template-columns:1.6fr auto; gap:clamp(24px,5vw,56px); align-items:center}
@media(max-width:720px){.hero-grid{grid-template-columns:1fr; gap:26px}}
.grad-text{background:linear-gradient(100deg,var(--accent),var(--accent3)); -webkit-background-clip:text; background-clip:text; color:transparent}
.avatar-wrap{margin:0; display:grid; gap:12px; justify-items:center}
.avatar{width:clamp(118px,17vw,164px); aspect-ratio:1; border-radius:50%; display:grid; place-items:center;
  font-family:var(--serif); font-size:clamp(3rem,6vw,4.4rem); color:#fff; position:relative;
  background:linear-gradient(140deg,var(--accent),var(--accent3));
  box-shadow:0 20px 44px -18px color-mix(in oklab,var(--accent) 65%,transparent)}
.avatar img{width:100%; height:100%; border-radius:50%; object-fit:cover}
.avatar::after{content:""; position:absolute; inset:-7px; border-radius:50%; border:1px solid color-mix(in oklab,var(--accent) 30%,transparent)}
.avatar-wrap figcaption{font-family:var(--serif); color:var(--muted); font-size:.92rem}
.cards3{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px; margin-top:1.8em}
.ecard{padding:24px; border-radius:16px; border:1px solid var(--line); background:var(--card);
  box-shadow:0 1px 2px rgba(20,30,50,.04); transition:transform .2s ease, box-shadow .25s ease, border-color .2s ease}
.ecard:hover{transform:translateY(-5px); box-shadow:0 18px 36px -20px color-mix(in oklab,var(--accent) 45%,transparent); border-color:color-mix(in oklab,var(--accent) 35%,var(--line))}
.ecard .no{font-family:var(--serif); color:var(--accent); font-size:1.35rem; line-height:1}
.ecard h3{font-family:var(--serif); font-weight:600; margin:.45em 0 .35em; font-size:1.16rem; letter-spacing:-.01em}
.ecard p{margin:0; color:var(--muted); font-size:.95rem}