/* Brandon B. Park — academic homepage
   Design system: clean white ground, navy ink, a restrained blue accent,
   generous whitespace and clear type hierarchy for maximum readability. */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,500;0,600;0,700;1,500&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --bg:#ffffff;
  --bg-alt:#f5f6f8;
  --ink:#161b22;
  --ink-soft:#3d4451;
  --ink-faint:#6b7280;
  --rule:#e3e6ea;
  --rule-strong:#c9ced6;
  --accent:#1d4d8f;
  --accent-dark:#123262;
  --accent-soft:#e9f0fa;
  --serif: 'Lora', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max: 840px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-soft);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

a{color:var(--accent); text-decoration:none;}
a:hover{text-decoration:underline; color:var(--accent-dark);}

.wrap{max-width:var(--max); margin:0 auto; padding:0 28px;}

/* ---------- Header / Nav ---------- */
header.site{
  border-bottom:1px solid var(--rule);
  background:rgba(255,255,255,0.94);
  backdrop-filter:blur(6px);
  position:sticky; top:0; z-index:10;
}
.nav-inner{
  max-width:var(--max); margin:0 auto; padding:18px 28px;
  display:flex; align-items:center; justify-content:space-between; flex-wrap:nowrap; gap:18px;
}
.brand{
  font-family:var(--serif); font-weight:700; font-size:1.55rem; color:var(--ink);
  letter-spacing:0.005em; white-space:nowrap; flex:none;
}
.brand:hover{text-decoration:none; color:var(--accent);}
.brand .kr{font-size:0.78rem; color:var(--ink-faint); font-family:var(--sans); margin-left:8px; font-weight:400;}
nav.links{display:flex; gap:18px; flex-wrap:nowrap;}
nav.links a{
  color:var(--ink-soft); font-size:0.94rem; font-weight:600;
  padding-bottom:4px; border-bottom:2px solid transparent;
}
nav.links a:hover{color:var(--ink); text-decoration:none; border-bottom-color:var(--rule-strong);}
nav.links a.active{color:var(--accent); border-bottom-color:var(--accent);}

/* ---------- Main / typography ---------- */
main{padding:56px 0 90px;}
.eyebrow{
  font-size:0.76rem; text-transform:uppercase; letter-spacing:0.05em;
  color:var(--accent); font-weight:700; margin:0 0 12px;
  white-space:nowrap;
}
.eyebrow-center{
  display:block; width:100%;
  text-align:center !important;
  margin:22px 0 6px !important;
  padding-left:76px;
  font-size:0.82rem;
}
h1{
  font-family:var(--serif); font-weight:700; font-size:2.25rem; line-height:1.28;
  margin:0 0 8px; color:var(--ink); letter-spacing:-0.01em;
}
h2{
  font-family:var(--serif); font-weight:700; font-size:1.4rem;
  margin:52px 0 18px; padding-top:24px; border-top:1px solid var(--rule);
  color:var(--ink); letter-spacing:-0.005em;
}
h2:first-of-type{margin-top:36px;}
h3{
  font-family:var(--serif); font-weight:600; font-size:1.12rem;
  margin:30px 0 10px; color:var(--ink);
}
p{
  margin:0 0 18px; color:var(--ink-soft); max-width:70ch;
  text-align:justify; text-justify:inter-word;
  -webkit-hyphens:auto; hyphens:auto;
}
.lede{
  font-size:1.08rem; color:var(--ink-soft); max-width:70ch;
  text-align:justify; text-justify:inter-word;
}
strong{color:var(--ink); font-weight:600;}

/* ---------- Hero / bio (home) ---------- */
.bio-grid{display:flex; gap:40px; margin-top:28px; align-items:flex-start; flex-wrap:wrap;}
.photo-col{flex:0 0 240px; width:240px; margin-top:10px;}
.avatar{
  display:block; width:100%; height:auto; aspect-ratio:784/1365;
  border-radius:6px; object-fit:cover; object-position:center 20%;
  box-shadow:0 8px 28px rgba(18,50,98,0.18);
  outline:1px solid var(--rule-strong);
}
.photo-links{display:flex; flex-direction:column; gap:6px; margin-top:16px;}
.photo-links a{font-size:0.92rem; font-weight:600; color:var(--accent);}
.bio-col{flex:1 1 420px; min-width:0;}
.bio-col p, .bio-col .lede{max-width:none;}

/* ---------- Cards / lists ---------- */
.item{
  margin:0 0 16px 24px; padding:0 0 16px 16px;
  border-bottom:1px solid var(--rule); border-left:2px solid var(--rule);
}
.item:last-child{border-bottom:none; padding-bottom:0;}
.item .status{
  display:inline-block; font-size:0.72rem; font-weight:700; color:var(--accent-dark);
  background:var(--accent-soft); padding:3px 9px; border-radius:4px; margin-left:8px; vertical-align:middle;
  letter-spacing:0.02em;
}
.item .meta{color:var(--ink-faint); font-size:0.9rem; margin-top:2px;}

.pub{margin-bottom:22px; font-size:1rem; padding-bottom:22px; border-bottom:1px solid var(--rule); text-align:justify;}
.pub:last-child{border-bottom:none;}
.pub .year{color:var(--accent-dark); font-weight:700; font-family:var(--serif); font-size:0.98rem;}
.pub .title{color:var(--ink); font-weight:600;}
.pub .venue{font-style:italic; color:var(--ink-soft);}

.hint{font-size:0.86rem; color:var(--ink-faint); font-style:italic; margin:-6px 0 22px;}

.title.has-abstract{
  position:relative; cursor:help;
  border-bottom:1px dotted var(--accent);
}
.abstract-box{
  display:none; position:absolute; left:0; top:calc(100% + 8px);
  width:min(460px, 82vw); z-index:30;
  background:var(--bg); border:1px solid var(--rule-strong);
  box-shadow:0 12px 32px rgba(18,50,98,0.18);
  border-radius:8px; padding:16px 18px;
  font-size:0.86rem; line-height:1.65; font-weight:400;
  color:var(--ink-soft); font-style:normal;
  text-align:left; white-space:normal;
}
.title.has-abstract:hover .abstract-box,
.title.has-abstract.open .abstract-box{display:block;}
.pub .coauthor{color:var(--ink-faint); font-size:0.92rem; margin-top:4px;}
.pub .links a{
  display:inline-block; font-size:0.76rem; font-weight:700; white-space:nowrap;
  color:var(--accent-dark); background:var(--accent-soft);
  padding:3px 11px; border-radius:12px; margin:0 4px 4px 0;
  letter-spacing:0.02em; text-decoration:none; vertical-align:middle;
}
.pub .links a:hover{background:var(--accent); color:#fff; text-decoration:none;}
.award{display:inline-block; margin-top:6px; color:var(--accent-dark); font-size:0.85rem; font-weight:700; background:var(--accent-soft); padding:3px 9px; border-radius:4px;}

/* theme card */
.theme{margin-bottom:48px;}
.theme .q{color:var(--ink-soft); font-style:italic; margin-bottom:16px; font-size:1.02rem;}
.theme ul{margin:0 0 0 8px; padding-left:28px; border-left:2px solid var(--rule);}
.theme li{margin-bottom:10px; color:var(--ink-soft); font-size:0.97rem; text-align:justify;}

/* teaching */
.post{
  display:flex; justify-content:space-between; align-items:baseline;
  gap:12px; flex-wrap:wrap; margin:32px 0 8px;
}
.post h3{margin:0;}
.post .years{color:var(--ink-faint); font-size:0.88rem; font-weight:600; white-space:nowrap;}
.courses{margin:0 0 12px; padding-left:22px;}
.courses li{color:var(--ink-soft); margin-bottom:6px;}

/* data */
.dataset{margin-bottom:40px; padding-bottom:40px; border-bottom:1px solid var(--rule);}
.dataset:last-child{border-bottom:none;}
.dataset h3{margin-top:0; margin-bottom:10px;}
.dataset .cta{
  display:inline-block; margin-top:6px; font-size:0.9rem; font-weight:700;
  color:var(--accent);
}

/* cv */
.cv-cta{
  display:inline-block; margin:12px 0 34px; padding:13px 24px;
  background:var(--accent); color:#fff; border-radius:6px; font-weight:600;
  font-size:0.95rem;
}
.cv-cta:hover{background:var(--accent-dark); text-decoration:none; color:#fff;}
.cv-block{margin-bottom:22px; padding-bottom:22px; border-bottom:1px solid var(--rule); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;}
.cv-block:last-child{border-bottom:none;}
.cv-block .role{font-weight:600; color:var(--ink);}
.cv-block .place{color:var(--ink-soft);}
.cv-block .yr{color:var(--ink-faint); font-size:0.88rem; font-weight:600; white-space:nowrap;}

footer{
  border-top:1px solid var(--rule); margin-top:48px; padding:28px 0 60px;
  color:var(--ink-faint); font-size:0.85rem;
}

@media (max-width:640px){
  .bio-grid{flex-direction:column;}
  .photo-col{width:220px; flex-basis:auto; margin-top:0;}
  .nav-inner{flex-wrap:wrap;}
  nav.links{gap:12px 18px; flex-wrap:wrap;}
  h1{font-size:1.85rem;}
  .cv-block{flex-direction:column; gap:2px;}
}