:root{
  --void:#0b0e14;
  --panel:#12161f;
  --panel-2:#161b26;
  --hairline:#232a38;
  --gold:#e8b34c;
  --gold-dim:#8a6a2c;
  --cyan:#4fd6c4;
  --ink:#e7e4da;
  --muted:#8b92a6;
  --muted-2:#5c6478;

  --display:'Space Grotesk', sans-serif;
  --body:'Source Serif 4', Georgia, serif;
  --mono:'JetBrains Mono', ui-monospace, monospace;

  --maxw:1040px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--void);
  color:var(--ink);
  font-family:var(--body);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:var(--gold); color:var(--void); }

a{ color:var(--cyan); text-decoration:none; }
a:hover{ text-decoration:underline; }
a:focus-visible, button:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; }

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

/* ---- background: bulk emerging from a boundary, tiled + glow ---- */
body::before{
  content:"";
  position:fixed; inset:0; z-index:-1;
  background-image:
    radial-gradient(ellipse 900px 500px at 82% -10%, rgba(232,179,76,0.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at -10% 30%, rgba(79,214,196,0.07), transparent 60%),
    url("data:image/svg+xml;base64,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");
  background-repeat:no-repeat, no-repeat, repeat;
  background-position: 0 0, 0 0, 0 0;
  background-size: auto, auto, 160px 160px;
  background-color:var(--void);
}

/* ---------- NAV ---------- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(11,14,20,0.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hairline);
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; height:64px; }
.nav-name{ font-family:var(--mono); font-size:14px; letter-spacing:0.02em; color:var(--ink); }
.nav-name span{ color:var(--cyan); }
.nav-links{ display:flex; gap:26px; align-items:center; }
.nav-links a{ font-family:var(--mono); font-size:13px; color:var(--muted); letter-spacing:0.02em; }
.nav-links a:hover{ color:var(--gold); text-decoration:none; }
.nav-links a.active{ color:var(--ink); border-bottom:1px solid var(--gold); padding-bottom:4px; }
.nav-links a.cta{
  color:var(--void); background:var(--gold); padding:8px 14px; border-radius:3px;
}
.nav-links a.cta:hover{ color:var(--gold); background:transparent; border:1px solid var(--gold); text-decoration:none; padding:7px 13px; }

/* ---------- HERO (index) ---------- */
.hero{ padding:88px 0 64px; }
.hero .wrap{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:32px; align-items:center; }
.eyebrow{
  font-family:var(--mono); font-size:12.5px; color:var(--gold);
  letter-spacing:0.1em; text-transform:uppercase; margin:0 0 18px;
}
h1.title{
  font-family:var(--display); font-weight:600;
  font-size:clamp(2.2rem, 4.2vw, 3.3rem);
  line-height:1.08; margin:0 0 18px; color:var(--ink);
}
.tagline{
  font-family:var(--body); color:var(--muted);
  font-size:1.08rem; max-width:52ch; margin:0 0 30px;
}
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; }
.btn{
  font-family:var(--mono); font-size:13px; letter-spacing:0.02em;
  padding:11px 18px; border-radius:3px; border:1px solid var(--hairline);
  color:var(--ink); display:inline-flex; align-items:center; gap:8px;
  transition:border-color .2s ease, color .2s ease, background .2s ease;
}
.btn:hover{ text-decoration:none; border-color:var(--gold); color:var(--gold); }
.btn.primary{ background:var(--gold); border-color:var(--gold); color:var(--void); }
.btn.primary:hover{ background:transparent; color:var(--gold); }

.disk-wrap{ display:flex; justify-content:center; }
.disk-wrap svg{ width:100%; max-width:380px; height:auto; }

/* ---------- PhD callout banner ---------- */
.phd-callout{
  border:1px solid var(--gold-dim);
  background:linear-gradient(180deg, rgba(232,179,76,0.07), rgba(232,179,76,0.02));
  border-radius:4px;
  padding:18px 22px;
  display:flex; align-items:center; justify-content:space-between; gap:18px; flex-wrap:wrap;
  margin-top:14px;
}
.phd-callout p{ margin:0; color:var(--ink); font-size:0.95rem; }
.phd-callout p strong{ color:var(--gold); }

/* ---------- SECTION shell ---------- */
section.block{ padding:64px 0; border-top:1px solid var(--hairline); }
.sec-head{ margin-bottom:30px; }
h2.sec-title{
  font-family:var(--display); font-weight:600; font-size:1.5rem;
  color:var(--ink); margin:0; letter-spacing:-0.01em;
}
.sec-title span{ color:var(--gold); }
.sec-intro{ color:var(--muted); max-width:64ch; margin:10px 0 0; }

.page-header{ padding:64px 0 20px; }
.page-header .eyebrow{ margin-bottom:14px; }
.page-header h1{
  font-family:var(--display); font-weight:600; font-size:clamp(1.9rem,3.4vw,2.6rem);
  margin:0 0 14px; color:var(--ink);
}
.page-header p{ color:var(--muted); max-width:60ch; margin:0; }

/* ---------- ABOUT ---------- */
.about-grid{ display:grid; grid-template-columns:200px 1fr; gap:40px; align-items:start; }
.avatar{
  width:180px; height:180px; border-radius:50%;
  object-fit:cover; object-position:50% 22%;
  border:1px solid var(--hairline);
  box-shadow:0 0 0 6px rgba(232,179,76,0.05), 0 0 40px rgba(79,214,196,0.08);
  display:block;
}
.about-text p{ color:#c9c6ba; margin:0 0 14px; }
.about-text .institute{ color:var(--muted); font-family:var(--mono); font-size:13px; }

/* ---------- BULLET LIST (interests, future directions) ---------- */
ul.bullet-list{ list-style:none; margin:0; padding:0; max-width:70ch; }
ul.bullet-list li{
  position:relative; padding-left:22px; margin-bottom:14px;
  color:var(--ink); font-size:1rem;
}
ul.bullet-list li::before{
  content:"◦"; position:absolute; left:0; top:0; color:var(--cyan);
}

/* ---------- PAPERS ---------- */
.paper{
  border:1px solid var(--hairline); background:var(--panel);
  padding:22px 24px; margin-bottom:14px; border-radius:4px;
  transition:border-color .2s ease;
}
.paper:hover{ border-color:var(--gold-dim); }
.paper-top{ display:flex; justify-content:space-between; gap:16px; align-items:baseline; flex-wrap:wrap; }
.paper-title{ font-family:var(--display); font-weight:600; font-size:1.05rem; color:var(--ink); margin:0; }
.paper-year{ font-family:var(--mono); font-size:12px; color:var(--gold); white-space:nowrap; }
.paper p.paper-desc{ color:var(--muted); font-size:0.94rem; margin:10px 0 12px; }
.paper-links a{ font-family:var(--mono); font-size:12.5px; margin-right:16px; }

/* ---------- TIMELINE (education / exploratory research) ---------- */
.timeline{ position:relative; padding-left:26px; }
.timeline::before{
  content:""; position:absolute; left:5px; top:6px; bottom:6px; width:1px;
  background:linear-gradient(var(--cyan), var(--hairline));
}
.t-item{ position:relative; margin-bottom:30px; }
.t-item:last-child{ margin-bottom:0; }
.t-item::before{
  content:""; position:absolute; left:-26px; top:5px; width:9px; height:9px;
  border-radius:50%; background:var(--void); border:2px solid var(--cyan);
}
.t-item .t-date{ font-family:var(--mono); font-size:12px; color:var(--gold); }
.t-item h3{ font-family:var(--display); font-size:1.05rem; margin:6px 0 4px; color:var(--ink); font-weight:600; }
.t-item .t-sub{ font-family:var(--mono); font-size:12.5px; color:var(--muted); margin-bottom:8px; }
.t-item p{ color:#c9c6ba; margin:0; font-size:0.95rem; }

/* ---------- CODE / PROJECT PREVIEWS ---------- */
.code-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.code-card{
  border:1px solid var(--hairline); background:var(--panel);
  padding:20px 22px; border-radius:4px; transition:border-color .2s ease;
}
.code-card:hover{ border-color:var(--cyan); }
.code-card-top{ display:flex; align-items:center; justify-content:space-between; gap:10px; }
.code-card h3{ font-family:var(--display); font-weight:600; font-size:1rem; margin:0; color:var(--ink); }
.code-card .lang{ font-family:var(--mono); font-size:11px; color:var(--gold); }
.code-card p{ color:var(--muted); font-size:0.92rem; margin:10px 0 12px; }
.code-card a.repo-link{ font-family:var(--mono); font-size:12.5px; }
.code-more{ margin-top:22px; }
.code-more a{ font-family:var(--mono); font-size:13px; }

/* ---------- PLACEHOLDER NOTE ---------- */
.editme{
  font-family:var(--mono); font-size:12px; color:var(--muted-2);
  border:1px dashed var(--hairline); padding:10px 14px; border-radius:3px;
  margin-bottom:22px; display:inline-block;
}

/* ---------- CONTACT PAGE ---------- */
.contact-hero{ padding:80px 0 20px; text-align:left; }
.contact-title{ font-family:var(--display); font-weight:600; font-size:clamp(2rem,4vw,2.8rem); margin:0 0 16px; }
.contact-sub{ color:var(--muted); max-width:56ch; margin:0 0 30px; font-size:1.05rem; }
.contact-row{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:20px; }
.contact-detail{ font-family:var(--mono); font-size:13px; color:var(--muted-2); margin-top:30px; }

/* ---------- FOOTER ---------- */
footer.site-footer{ border-top:1px solid var(--hairline); padding:36px 0; margin-top:40px; }
.foot-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-family:var(--mono); font-size:12px; color:var(--muted-2); }

@media (max-width: 760px){
  .nav-links{ gap:16px; }
  .nav-links a:not(.cta){ display:none; }
  .hero .wrap{ grid-template-columns:1fr; }
  .disk-wrap{ order:-1; margin-bottom:10px; }
  .disk-wrap svg{ max-width:240px; }
  .about-grid{ grid-template-columns:1fr; }
  .avatar{ width:120px; height:120px; }
  .phd-callout{ flex-direction:column; align-items:flex-start; }
  .code-grid{ grid-template-columns:1fr; }
}

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; }
}