:root{
  --bg:#0a0a0a;
  --bg-raised:#131313;
  --border:#242424;
  --text:#e8e8e8;
  --text-dim:#8a8a8a;
  --text-faint:#565656;
  --accent:#c8ff4d;
  --accent-dim:#3a4520;
  --display:'Space Grotesk',sans-serif;
  --mono:'JetBrains Mono',monospace;
  --sidebar-w:300px;
  --content-max:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg);
  color:var(--text-dim);
  font-family:var(--display);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
code{font-family:var(--mono);background:var(--bg-raised);padding:0.12em 0.4em;border-radius:4px;font-size:0.88em;color:var(--accent);}
strong{color:var(--text);}
em{color:var(--text);font-style:italic;}

#grid-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;opacity:0.7;pointer-events:none;}

.wrap{display:flex;max-width:1600px;margin:0 auto;position:relative;z-index:1;}

/* sidebar */
.sidebar{width:var(--sidebar-w);flex-shrink:0;position:sticky;top:0;height:100vh;padding:4.5rem 2.5rem 3rem;}
.sidebar-inner{display:flex;flex-direction:column;justify-content:space-between;height:100%;}
.brand-name{margin:0 0 0.6rem;}
.brand-name a{
  font-family:var(--display);font-weight:700;
  font-size:2.1rem;line-height:1.05;letter-spacing:-0.02em;
  color:var(--text);text-transform:uppercase;
}
.sidebar-tag{font-family:var(--mono);font-size:0.82rem;color:var(--accent);margin:0;}

.sidebar-nav ul{list-style:none;margin:0;padding:0;}
.sidebar-nav li{margin-bottom:0.9rem;}
.nav-link{
  display:flex;align-items:center;gap:0.9rem;
  font-family:var(--mono);font-size:0.78rem;letter-spacing:0.06em;text-transform:uppercase;
  color:var(--text-faint);transition:color .2s ease;
}
.nav-line{display:block;height:1px;width:20px;background:var(--text-faint);transition:width .2s ease, background .2s ease;}
.nav-link:hover{color:var(--text);}
.nav-link:hover .nav-line{background:var(--text);}
.nav-link.active{color:var(--text);}
.nav-link.active .nav-line{width:40px;background:var(--accent);}

.sidebar-bottom{display:flex;flex-direction:column;gap:1.1rem;}
.resume-link{
  display:flex;align-items:center;gap:0.6rem;
  font-family:var(--display);font-size:0.85rem;font-weight:600;color:var(--bg);
  background:var(--accent);border-radius:8px;
  padding:0.7rem 1rem;width:fit-content;
  transition:transform .2s ease, box-shadow .2s ease;
}
.resume-link:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(200,255,77,0.25);}
.social-list{list-style:none;display:flex;gap:0.7rem;margin:0;padding:0;}
.social-list a{
  display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;
  color:var(--text);background:var(--bg-raised);
  border:1px solid var(--border);border-radius:8px;
  transition:color .2s ease, border-color .2s ease, transform .2s ease;
}
.social-list a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px);}

/* content */
.content{flex:1;max-width:calc(var(--content-max) + 6rem);margin:0 auto;padding:5rem 3.5rem 5rem;}
.section{padding-bottom:5rem;scroll-margin-top:3rem;}
.section-heading{
  font-family:var(--mono);font-size:1.25rem;font-weight:500;color:var(--text);
  letter-spacing:0.02em;margin:0 0 2rem;display:flex;align-items:baseline;gap:0.6rem;
}
.num{color:var(--accent);}

/* hero */
.hero-section{
  padding-bottom:4.5rem;
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:4rem;
  align-items:center;
}
.eyebrow{font-family:var(--mono);font-size:0.82rem;color:var(--accent);letter-spacing:0.04em;margin:0 0 1rem;}
.hero-line{
  font-family:var(--display);font-weight:700;
  font-size:clamp(1.7rem,2.6vw,2.5rem);line-height:1.15;letter-spacing:-0.01em;
  color:var(--text);margin:0 0 0.6rem;
}
.hero-subline{
  font-family:var(--mono);font-size:0.85rem;font-weight:400;
  color:var(--text-faint);margin:0 0 1.25rem;
}
.hero-type{
  font-family:var(--mono);font-weight:500;
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  color:var(--accent);white-space:nowrap;
}
.hero-type .scramble-char{color:var(--text-faint);}
.fact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
.fact-card{
  display:flex;flex-direction:column;gap:0.6rem;
  background:var(--bg-raised);border:1px solid var(--border);border-radius:10px;
  padding:1.4rem;font-size:0.88rem;transition:border-color .2s ease, transform .2s ease;
}
.fact-card:hover{border-color:var(--accent);transform:translateY(-3px);}
.fact-num{font-family:var(--mono);color:var(--accent);font-size:1.3rem;font-weight:500;}

/* experience */
.exp-row{display:flex;gap:2rem;}
.exp-date{flex-shrink:0;width:80px;font-family:var(--mono);font-size:0.75rem;color:var(--text-faint);padding-top:0.25rem;}
.exp-body h4{font-size:1.05rem;color:var(--text);margin:0 0 0.35rem;font-weight:700;font-family:var(--display);}
.exp-body .dim{color:var(--text-dim);font-weight:400;}
.exp-project{font-size:0.88rem;margin:0 0 0.9rem;}
.exp-project a{color:var(--accent);}
.exp-body ul{margin:0 0 1.1rem;padding-left:1.1rem;display:grid;gap:0.5rem;font-size:0.9rem;}
.exp-body ul li::marker{color:var(--accent-dim);}

.pill-row{display:flex;flex-wrap:wrap;gap:0.5rem;}
.pill-row span{
  font-family:var(--mono);font-size:0.68rem;color:var(--text-dim);
  background:var(--bg-raised);border:1px solid var(--border);
  padding:0.28rem 0.6rem;border-radius:5px;
}

/* projects */
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem;}
.project-card{
  position:relative;display:flex;flex-direction:column;gap:0.75rem;
  background:var(--bg-raised);border:1px solid var(--border);border-radius:10px;
  padding:1.5rem;transition:border-color .2s ease, transform .2s ease;
}
.project-card:hover{border-color:var(--accent);transform:translateY(-3px);}
.project-lang{font-family:var(--mono);font-size:0.7rem;color:var(--accent);}
.project-card h4{font-family:var(--display);font-size:1.15rem;margin:0;font-weight:700;color:var(--text);}
.project-card p{font-size:0.88rem;margin:0;color:var(--text-dim);max-width:56ch;}
.card-arrow{position:absolute;top:1.4rem;right:1.4rem;color:var(--text-faint);font-size:1rem;transition:color .2s ease, transform .2s ease;}
.project-card:hover .card-arrow{color:var(--accent);transform:translate(2px,-2px);}

.card-more{align-items:center;justify-content:center;text-align:center;gap:0.3rem;color:var(--text-faint);font-family:var(--mono);font-size:0.85rem;}
.more-plus{font-family:var(--display);font-size:1.8rem;color:var(--text-faint);}
.card-more:hover{border-color:var(--accent);}
.card-more:hover .more-plus,.card-more:hover span{color:var(--accent);}

.bottom-row{display:grid;grid-template-columns:1.3fr 1fr;gap:4rem;align-items:start;padding-bottom:5rem;}
.bottom-row .section{padding-bottom:0;}

/* research */
.pub-row h4{font-size:1.05rem;color:var(--text);margin:0 0 0.4rem;font-weight:700;font-family:var(--display);}
.pub-venue{font-family:var(--mono);color:var(--accent);font-size:0.8rem;margin:0 0 1rem;}
.pub-row p{max-width:var(--content-max);margin:0 0 1.1rem;font-size:0.92rem;}
.inline-link{color:var(--text);border-bottom:1px solid var(--accent-dim);font-size:0.88rem;}
.inline-link:hover{color:var(--accent);border-color:var(--accent);}

/* contact */
.contact-section{display:flex;flex-direction:column;align-items:flex-start;}
.contact-email{
  font-family:var(--display);font-weight:700;
  font-size:clamp(1.6rem,4vw,2.6rem);color:var(--text);
  border-bottom:2px solid var(--border);padding-bottom:0.6rem;
  transition:color .2s ease, border-color .2s ease;
}
.contact-email:hover{color:var(--accent);border-color:var(--accent);}
.contact-note{font-size:0.9rem;margin-top:1.25rem;}

@media (max-width:1200px){
  .project-grid{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:900px){
  .wrap{flex-direction:column;}
  .sidebar{position:relative;width:100%;height:auto;padding:2.5rem 1.75rem 1.5rem;}
  .sidebar-inner{gap:2rem;}
  .sidebar-nav{display:none;}
  .content{max-width:none;padding:1rem 1.75rem 5rem;}
  .hero-section{grid-template-columns:1fr;gap:2rem;}
  .hero-type{white-space:normal;}
  .fact-grid{grid-template-columns:1fr 1fr;}
  .exp-row{flex-direction:column;gap:0.4rem;}
  .exp-date{width:auto;}
  .project-grid{grid-template-columns:1fr;}
  .bottom-row{grid-template-columns:1fr;gap:0;}
  .bottom-row .section{padding-bottom:4rem;}
}