/* =========================================================
   chaeys.com — Chaeyoung Lee / 이채영
   Media artist · Infoborg / The Non-Callable
   Pure white, Pretendard, minimal monochrome.
   ========================================================= */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');

:root {
  --bg:        #ffffff;
  --bg-2:      #fafafa;
  --ink:       #111111;
  --ink-soft:  #3d3d3d;
  --muted:     #8a8a8a;
  --line:      #e7e7e7;
  --line-2:    #d8d8d8;
  --accent:    #111111;   /* monochrome — accents are ink */

  --sans: 'Pretendard', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --maxw: 1140px;
  --pad: clamp(1.25rem, 5vw, 4rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: -0.012em;
  font-weight: 400;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-block: 1.05rem;
}
.brand {
  font-size: 1.05rem; letter-spacing: 0.02em; font-weight: 600;
  line-height: 1.1;
}
.brand small { display:block; font-size:.6rem; letter-spacing:.26em; color:var(--muted); font-weight:500; text-transform:uppercase; margin-top:3px;}
.nav-links { display: flex; gap: clamp(1rem, 3vw, 2.2rem); align-items:center; }
.nav-links a {
  font-size: .85rem; letter-spacing: -0.01em; color: var(--ink-soft); font-weight: 500;
  position: relative; padding-bottom: 3px; transition: color .2s;
}
.nav-links a .en { display:block; font-size:.58rem; letter-spacing:.16em; color:var(--muted); text-transform:uppercase; font-weight:500;}
.nav-links a::after {
  content:''; position:absolute; left:0; bottom:0; height:1.5px; width:0;
  background: var(--ink); transition: width .25s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }

.nav-toggle { display:none; background:none; border:none; cursor:pointer; font-size:1.5rem; line-height:1; color:var(--ink);}

/* ---------- Hero ---------- */
.hero { padding-block: clamp(4rem, 13vh, 8.5rem) clamp(2.5rem, 8vh, 5rem); }
.hero .kicker {
  font-size:.7rem; letter-spacing:.26em; text-transform:uppercase;
  color:var(--muted); margin-bottom:1.8rem; font-weight:500;
}
.hero h1 {
  font-weight: 600;
  font-size: clamp(2rem, 5.4vw, 4rem); line-height: 1.18;
  letter-spacing: -0.035em; max-width: 20ch;
}
.hero h1 em { font-style: normal; color: var(--ink); border-bottom: 3px solid var(--ink); padding-bottom:1px; }
.hero .lede {
  margin-top: 2rem; max-width: 46ch;
  font-size: clamp(1rem, 1.5vw, 1.15rem); color: var(--ink-soft); font-weight:400;
}
.hero .sig { margin-top:2.4rem; font-size:.8rem; letter-spacing:0; color:var(--muted); font-weight:500;}

/* ---------- Generic section ---------- */
section { padding-block: clamp(2.5rem, 7vh, 5rem); }
.section-label {
  font-size:.68rem; letter-spacing:.24em; text-transform:uppercase;
  color:var(--muted); margin-bottom:2.2rem; font-weight:600;
  display:flex; align-items:center; gap:1rem;
}
.section-label::after { content:''; flex:1; height:1px; background:var(--line); }

h2.lead {
  font-weight:600;
  font-size:clamp(1.5rem,3.6vw,2.5rem); line-height:1.32; letter-spacing:-0.03em;
  max-width:26ch;
}
h2.lead em { font-style:normal; color:var(--ink); border-bottom:2px solid var(--line-2); }

.prose { max-width: 62ch; }
.prose p { margin-top: 1.3rem; color: var(--ink-soft); }
.prose p:first-child { margin-top: 0; }
.prose strong { font-weight:600; color:var(--ink); }
.prose .en { color: var(--muted); font-size:.92em; }

/* ---------- Concept pillars ---------- */
.pillars { display:grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap:0; border-top:1px solid var(--line); margin-top:2.5rem;}
.pillar { padding: 2rem 1.8rem 2.2rem 0; border-bottom:1px solid var(--line); }
.pillar .num { color:var(--muted); font-size:.9rem; font-weight:600; font-variant-numeric:tabular-nums;}
.pillar h3 { font-weight:600; font-size:1.3rem; margin:.5rem 0 .2rem; letter-spacing:-0.02em;}
.pillar .en-term { font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); font-weight:500;}
.pillar p { margin-top:.9rem; font-size:.93rem; color:var(--ink-soft); max-width:34ch;}

/* ---------- Works ---------- */
.work { display:grid; grid-template-columns: 1fr; gap:1.4rem; padding-block: clamp(2.2rem,5vh,4rem); border-top:1px solid var(--line); }
.work:last-of-type { border-bottom:1px solid var(--line); }
.work-head { display:flex; flex-wrap:wrap; align-items:baseline; gap:1rem; justify-content:space-between;}
.work-title { font-weight:600; font-size:clamp(1.4rem,3.2vw,2.1rem); letter-spacing:-0.03em;}
.work-title em { font-style:normal; }
.work-meta { font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); white-space:nowrap; font-weight:500; display:flex; align-items:center; gap:.6rem;}
.badge { display:inline-block; font-size:.6rem; letter-spacing:.14em; text-transform:uppercase; font-weight:600;
  color:var(--ink); border:1px solid var(--line-2); border-radius:999px; padding:.18rem .65rem; }
.work-body { max-width:64ch; color:var(--ink-soft); }
.work-body .en { display:block; margin-top:.8rem; color:var(--muted); font-size:.93em;}
.work-tags { margin-top:1.1rem; display:flex; flex-wrap:wrap; gap:.5rem;}
.tag { font-size:.7rem; letter-spacing:0; color:var(--ink-soft); background:var(--bg-2); border:1px solid var(--line); border-radius:4px; padding:.2rem .6rem; font-weight:500;}

.work-figure { aspect-ratio: 16/9; background: var(--bg-2);
   border:1px solid var(--line); border-radius:4px; position:relative; overflow:hidden;
   display:flex; align-items:center; justify-content:center;}
.work-figure::before { content:''; position:absolute; inset:0;
   background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
   background-size: 28px 28px; opacity:.5;}
.work-figure span { position:relative; font-size:.66rem; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); font-weight:500;}

/* ---------- CV ---------- */
.cv-grid { display:grid; grid-template-columns: 180px 1fr; gap:.2rem 2.5rem; }
.cv-grid dt { font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); padding-top:.95rem; border-top:1px solid var(--line); font-weight:600;}
.cv-grid dd { padding-top:.95rem; border-top:1px solid var(--line); color:var(--ink-soft); }
.cv-grid dd strong { color:var(--ink); font-weight:600; }
.cv-grid dd .yr { color:var(--muted); font-variant-numeric:tabular-nums; margin-right:.6rem; font-weight:500;}

/* ---------- Pull quote ---------- */
.pullquote { font-weight:600;
  font-size:clamp(1.3rem,3vw,2rem); line-height:1.5; max-width:26ch; color:var(--ink); letter-spacing:-0.025em;
  border-left:2px solid var(--ink); padding-left:1.5rem; margin-block:1rem;}

/* ---------- CTA / contact ---------- */
.contact-box { border:1px solid var(--line); border-radius:6px; padding:clamp(1.8rem,5vw,3rem); background:var(--bg-2); }
.contact-box a.mail { font-size:clamp(.95rem,1.6vw,1.15rem); color:var(--ink); font-weight:500; border-bottom:1px solid var(--ink); letter-spacing:-0.01em;}
.contact-box a.mail:hover { color:var(--muted); border-color:var(--muted); }

/* ---------- Footer ---------- */
.site-footer { border-top:1px solid var(--line); margin-top:2.5rem; padding-block:2.5rem 3.5rem; color:var(--muted); font-size:.78rem;}
.site-footer .row { display:flex; flex-wrap:wrap; gap:1rem; justify-content:space-between; align-items:baseline;}
.site-footer a:hover { color:var(--ink); }

/* ---------- Reveal animation ---------- */
.reveal { opacity:0; transform: translateY(16px); 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;} }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  body { font-size:16px; }
  .nav-links {
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px);
    background: var(--bg); flex-direction: column; align-items:flex-start;
    padding: 5rem 2rem; gap:1.8rem; transform: translateX(100%);
    transition: transform .3s ease; box-shadow:-20px 0 60px rgba(0,0,0,.06); border-left:1px solid var(--line);
  }
  .nav-links.open { transform:none; }
  .nav-toggle { display:block; z-index:60; }
  .cv-grid { grid-template-columns: 1fr; gap:0; }
  .cv-grid dt { border-top:1px solid var(--line); padding-bottom:0; }
  .cv-grid dd { border-top:none; padding-top:.2rem; padding-bottom:.8rem; }
}

/* ---------- Bilingual block (KO → EN) ---------- */
.bl { margin-top: 1.5rem; max-width: 60ch; }
.bl:first-child { margin-top: 0; }
.bl .ko { color: var(--ink-soft); }
.bl .en { margin-top: .35rem; color: var(--muted); font-size: .9em; line-height: 1.7; }
.bl .ko strong { color: var(--ink); font-weight: 600; }

/* ---------- Index list (home) ---------- */
.index-list { border-top: 1px solid var(--line); margin-top: 2rem; }
.index-item {
  display: block; padding: 1.6rem 0; border-bottom: 1px solid var(--line);
  transition: padding-left .25s ease;
}
a.index-item:hover { padding-left: .5rem; }
.index-item .it-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: .8rem 1.2rem; justify-content: space-between; }
.index-item .it-title { font-size: clamp(1.25rem, 2.6vw, 1.7rem); font-weight: 600; letter-spacing: -0.03em; }
.index-item .it-title em { font-style: normal; }
.index-item .it-meta { font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 500; white-space: nowrap; }
.index-item .it-ko { margin-top: .7rem; color: var(--ink-soft); font-size: .95rem; max-width: 58ch; }
.index-item .it-en { margin-top: .25rem; color: var(--muted); font-size: .85rem; line-height: 1.6; max-width: 58ch; }

/* ---------- More-link ---------- */
.more-link { display: inline-flex; align-items: center; gap: .4rem; margin-top: 2.2rem;
  font-size: .8rem; letter-spacing: .04em; color: var(--ink); font-weight: 500; border-bottom: 1px solid var(--ink); padding-bottom: 2px; }
.more-link:hover { color: var(--muted); border-color: var(--muted); }

/* ---------- Article (reading) ---------- */
.narrow { max-width: 760px; }
.art-meta { font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; color:var(--muted); font-weight:600; margin-bottom:1.6rem; display:flex; flex-wrap:wrap; gap:.4rem 1rem; }
.art-title { font-weight:600; font-size:clamp(1.8rem,4.4vw,2.9rem); line-height:1.22; letter-spacing:-0.035em; }
.art-title .sub { display:block; color:var(--muted); font-weight:500; font-size:.42em; letter-spacing:.01em; margin-top:.5rem; }
.art-lead { margin-top:1.6rem; font-size:clamp(1.05rem,1.7vw,1.25rem); line-height:1.6; color:var(--ink-soft); }
.art-lead .en { display:block; margin-top:.5rem; font-size:.82em; color:var(--muted); }
.article h2 { font-weight:600; font-size:clamp(1.25rem,2.6vw,1.6rem); letter-spacing:-0.03em; margin:0 0 .3rem; }
.article h2 .en-h { display:block; font-size:.6em; letter-spacing:.04em; color:var(--muted); font-weight:500; margin-top:.2rem; }
.article .sec { padding-block: clamp(2rem,5vh,3.2rem); border-top:1px solid var(--line); }
.article .sec:first-of-type { border-top:none; }
.back-link { display:inline-flex; align-items:center; gap:.4rem; font-size:.78rem; letter-spacing:.04em; color:var(--muted); font-weight:500; margin-bottom:2.4rem; }
.back-link:hover { color:var(--ink); }
.note { margin-top:1rem; font-size:.82rem; color:var(--muted); border-left:2px solid var(--line-2); padding-left:1rem; }
.note .en { display:block; margin-top:.3rem; }

/* ---------- Empty state (works in prep) ---------- */
.empty-state { border:1px solid var(--line); border-radius:6px; background:var(--bg-2); padding:clamp(2.5rem,7vw,4.5rem); text-align:center; margin-top:2rem; }
.empty-state .es-ko { font-size:1.05rem; color:var(--ink-soft); font-weight:500; }
.empty-state .es-en { margin-top:.5rem; font-size:.85rem; color:var(--muted); letter-spacing:.04em; text-transform:uppercase; }

/* ---------- Home central question ---------- */
.q-block { max-width: 24ch; }
.q-block .q-ko { font-weight:600; font-size:clamp(1.8rem,5vw,3.2rem); line-height:1.28; letter-spacing:-0.035em; color:var(--ink); }
.q-block .q-ko em { font-style:normal; border-bottom:3px solid var(--ink); padding-bottom:1px; }
.q-block .q-en { margin-top:1.4rem; max-width:46ch; font-size:clamp(1rem,1.5vw,1.12rem); color:var(--muted); line-height:1.6; }

/* ---------- Home hero image ---------- */
.home-hero-img { width:100%; aspect-ratio:16/7; object-fit:cover; border-radius:4px; display:block; }
@media (max-width:720px){ .home-hero-img { aspect-ratio:4/3; } }

/* ---------- Works gallery (masonry) ---------- */
.gallery { columns: 3 280px; column-gap: 14px; margin-top: 2rem; }
.gallery img { width:100%; margin:0 0 14px; border-radius:4px; display:block; break-inside:avoid; background:var(--bg-2); }
.gallery-cap { font-size:.72rem; letter-spacing:.04em; color:var(--muted); margin-top:.4rem; }

/* ---------- Works series (AI Work 등 시리즈 묶음) ---------- */
.series { margin-top: 3.2rem; }
.series:first-of-type { margin-top: 2.2rem; }
.series-title { font-weight:600; font-size:clamp(1.15rem,2.4vw,1.45rem); letter-spacing:-0.025em; }
.series-title .en { font-weight:500; color:var(--muted); font-size:.72em; letter-spacing:.02em; margin-left:.6rem; }
.series-cap { margin-top:.45rem; font-size:.9rem; color:var(--ink-soft); max-width:58ch; }
.series-cap .en { display:block; margin-top:.2rem; color:var(--muted); font-size:.92em; line-height:1.6; }

/* ---------- Project index (works) ---------- */
.proj-list { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:2.8rem 1.5rem; margin-top:2.5rem; }
.proj-card { display:block; }
.proj-card .cover { aspect-ratio:16/10; overflow:hidden; border-radius:4px; background:var(--bg-2); }
.proj-card .cover img { width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.proj-card:hover .cover img { transform:scale(1.03); }
.proj-card .p-title { margin-top:1rem; font-weight:600; font-size:1.15rem; letter-spacing:-0.02em; color:var(--ink); }
.proj-card .p-meta { margin-top:.25rem; font-size:.7rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); font-weight:500; }

/* ---------- Film flow (project detail) ---------- */
.film { display:grid; gap:14px; margin-top:2.5rem; }
.film img, .film video { width:100%; border-radius:4px; display:block; background:var(--bg-2); }
.film .two { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media (max-width:720px){ .film .two { grid-template-columns:1fr; } }
.proj-head { padding-top: clamp(3rem, 9vh, 5.5rem); }
.proj-head h1 { font-weight:600; font-