@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,500;0,9..144,600;1,9..144,500&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg: #12162A;
  --bg-alt: #1A2038;
  --bg-alt-2: #202748;
  --text: #E9E6DA;
  --text-dim: #9BA1C4;
  --text-faint: #6E7396;
  --accent-cyan: #7FE8DC;
  --accent-amber: #F2A65A;
  --rule: #2B3157;
  --rule-soft: #232951;
  --max: 880px;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a{ color: var(--accent-cyan); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover{ border-bottom-color: var(--accent-cyan); }
a:focus-visible, button:focus-visible{ outline: 2px solid var(--accent-cyan); outline-offset: 3px; }

.mono{ font-family: 'IBM Plex Mono', monospace; }

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

header.site{
  position: sticky; top:0; z-index: 20;
  background: rgba(18,22,42,0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule-soft);
}
header.site .wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding-top:18px; padding-bottom:18px;
}
.brand{
  font-family:'IBM Plex Mono', monospace;
  font-size: 14.5px;
  color: var(--text);
  letter-spacing: 0.02em;
}
.brand .dot{ color: var(--accent-amber); }
nav.primary{ display:flex; gap: 28px; }
nav.primary a{
  font-family:'IBM Plex Mono', monospace;
  font-size: 13.5px;
  color: var(--text-dim);
  letter-spacing: 0.03em;
  border-bottom: none;
}
nav.primary a::before{ content:"› "; color: var(--text-faint); }
nav.primary a:hover, nav.primary a.active{ color: var(--accent-cyan); }

/* ---------- hero ---------- */
.hero{
  padding: 76px 0 56px;
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items:center;
}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-amber);
  margin: 0 0 14px;
}
h1.name{
  font-family:'Fraunces', serif;
  font-weight: 500;
  font-size: clamp(2.6rem, 5.2vw, 3.6rem);
  line-height: 1.04;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.role{
  font-size: 1.08rem;
  color: var(--text-dim);
  margin: 0 0 22px;
  max-width: 46ch;
}
.hero p.lede{
  color: var(--text);
  max-width: 52ch;
  margin: 0 0 26px;
}
.hero-links{ display:flex; gap: 18px; flex-wrap:wrap; font-family:'IBM Plex Mono', monospace; font-size: 13.5px; }
.hero-links a{ color: var(--text-dim); }
.hero-links a:hover{ color: var(--accent-cyan); }

/* signature graphic: double-well potential */
.wellgraphic{ width:100%; height:auto; }
.wellgraphic .curve{ fill:none; stroke: var(--rule); stroke-width: 1.6; }
.wellgraphic .state{ fill: var(--accent-cyan); }
.wellgraphic .state.right{ fill: var(--accent-amber); }
.wellgraphic .state{ animation: pulse 3.2s ease-in-out infinite; }
.wellgraphic .state.right{ animation-delay: 1.6s; }
@keyframes pulse{
  0%,100%{ opacity: 0.55; r: 4.2; }
  50%{ opacity: 1; r: 5.6; }
}
@media (prefers-reduced-motion: reduce){
  .wellgraphic .state{ animation: none; opacity: 0.9; }
}

/* ---------- sections ---------- */
section{ padding: 8px 0 52px; }
h2.section-title{
  font-family:'Fraunces', serif;
  font-weight: 500;
  font-size: 1.6rem;
  margin: 0 0 6px;
}
.section-sub{
  color: var(--text-faint);
  font-family:'IBM Plex Mono', monospace;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 26px;
}
hr.rule{ border: none; border-top: 1px solid var(--rule-soft); margin: 0 0 40px; }

/* ---------- publications ---------- */
.pub-year{
  font-family:'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--accent-amber);
  margin: 34px 0 10px;
  letter-spacing: 0.04em;
}
.pub-year:first-of-type{ margin-top: 0; }
.pub{
  padding: 14px 0;
  border-top: 1px solid var(--rule-soft);
}
.pub:first-of-type{ border-top:none; padding-top:0; }
.pub .title{ color: var(--text); font-size: 1rem; margin: 0 0 4px; }
.pub .authors{ color: var(--text-dim); font-size: 0.92rem; margin: 0 0 3px; }
.pub .authors b{ color: var(--text); font-weight: 600; }
.pub .venue{ color: var(--text-faint); font-family:'IBM Plex Mono', monospace; font-size: 0.82rem; }

/* ---------- CV page ---------- */
.cv-block{ margin-bottom: 40px; }
.cv-entry{ display:grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 12px 0; border-top: 1px solid var(--rule-soft); }
.cv-entry:first-of-type{ border-top:none; }
.cv-date{ font-family:'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--text-faint); padding-top: 2px; }
.cv-role{ color: var(--text); font-weight: 600; margin: 0 0 3px; }
.cv-org{ color: var(--text-dim); font-size: 0.94rem; margin: 0 0 6px; }
.cv-detail{ color: var(--text-dim); font-size: 0.92rem; margin: 0; }
.cv-detail ul{ margin: 6px 0 0; padding-left: 18px; }
.cv-detail li{ margin-bottom: 4px; }

.mentee-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 6px 24px; font-size: 0.92rem; color: var(--text-dim); }
.mentee-grid .role{ color: var(--text-faint); font-family:'IBM Plex Mono', monospace; font-size:0.8rem; }

.tag{
  display:inline-block; font-family:'IBM Plex Mono', monospace; font-size: 11.5px;
  color: var(--accent-cyan); border: 1px solid var(--rule); border-radius: 3px;
  padding: 2px 7px; margin-right: 8px;
}

footer.site{
  border-top: 1px solid var(--rule-soft);
  padding: 30px 0 60px;
  color: var(--text-faint);
  font-family:'IBM Plex Mono', monospace;
  font-size: 12.5px;
}

@media (max-width: 720px){
  .hero{ grid-template-columns: 1fr; }
  .hero .wellwrap{ order:-1; max-width: 260px; }
  nav.primary{ gap: 16px; }
}