/* ============================================================
   Morteza Aghajanzadeh — personal website
   Hand-built static site. No framework, no build step.
   ============================================================ */

:root{
  --ink:#1d2330;
  --body:#39404f;
  --muted:#6b7280;
  --navy:#1a2e5a;
  --navy-soft:#33508c;
  --burgundy:#7d2233;
  --rule:#e6e3dc;
  --rule-soft:#f0eee9;
  --bg:#ffffff;
  --tint:#f7f6f2;
  --tint-navy:#f2f5fa;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Source Sans 3",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--body);
  background:var(--bg);
  font-size:17px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--navy);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .15s ease,color .15s ease;}
a:hover{color:var(--burgundy);border-bottom-color:var(--burgundy);}

/* NAV */
.nav{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--rule);
}
.nav-inner{
  max-width:1080px;margin:0 auto;padding:.85rem 2rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
}
.brand{font-family:var(--serif);font-style:italic;font-size:1.2rem;color:var(--navy);font-weight:500;border:none;}
.brand:hover{color:var(--navy);}
.nav-links{display:flex;gap:1.7rem;align-items:center;}
.nav-links a{
  font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--muted);border:none;font-weight:600;
}
.nav-links a:hover{color:var(--navy);}
.nav-links a.cv{color:var(--navy);border:1px solid var(--rule);padding:.32rem .75rem;border-radius:3px;}
.nav-links a.cv:hover{background:var(--navy);color:#fff;border-color:var(--navy);}

.wrap{max-width:1080px;margin:0 auto;padding:0 2rem;}

/* HERO */
.hero{display:flex;gap:3rem;align-items:flex-start;padding:3.6rem 0 2.4rem;}
.portrait{flex-shrink:0;}
.portrait img{
  width:330px;height:330px;object-fit:cover;border-radius:2px;
  outline:1px solid var(--rule);outline-offset:8px;
}
.hero-body{padding-top:.5rem;}
.hero h1{
  font-family:var(--serif);font-weight:500;font-size:3.1rem;line-height:1.04;
  color:var(--ink);margin:0 0 .4rem;letter-spacing:-.01em;
}
.hero .role{font-size:1.08rem;color:var(--body);margin:0 0 .15rem;}
.hero .affil{font-size:1.08rem;margin:0 0 1.1rem;}
.jm-pill{
  display:inline-flex;align-items:center;gap:.55rem;
  background:var(--tint-navy);color:var(--navy);
  border:1px solid #d8e2f0;border-radius:3px;
  font-size:.76rem;letter-spacing:.09em;text-transform:uppercase;font-weight:600;
  padding:.42rem .8rem;margin-bottom:1.3rem;
}
.jm-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--burgundy);}
.contacts{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;font-size:.95rem;}
.contacts a{color:var(--muted);border:none;}
.contacts a:hover{color:var(--navy);}

/* SECTIONS */
section{padding:2.8rem 0;border-top:1px solid var(--rule-soft);}
.eyebrow{
  font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);font-weight:600;margin:0 0 .25rem;
}
h2.sec{
  font-family:var(--serif);font-weight:500;font-size:2rem;color:var(--navy);
  margin:0 0 .25rem;letter-spacing:-.01em;
}
h2.sec::after{content:'';display:block;width:2.25rem;height:2px;background:var(--burgundy);margin:.6rem 0 1.5rem;}
.bio{font-size:1.07rem;line-height:1.8;max-width:52em;}
.bio p{margin:0 0 1rem;}
.interests{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.3rem;}
.tag{
  font-size:.85rem;color:var(--navy);background:var(--tint-navy);
  border:1px solid #e1e8f2;border-radius:3px;padding:.3rem .75rem;
}

/* RESEARCH — 2-column grid */
.research-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;margin-top:.5rem;}
.card{
  display:flex;flex-direction:column;
  background:var(--bg);border:1px solid var(--rule);
  border-left:3px solid var(--rule);border-radius:2px;overflow:hidden;
  transition:border-left-color .2s ease,transform .2s ease;
}
.card:hover{border-left-color:var(--burgundy);transform:translateY(-2px);}
.card.jmp{border-left-color:var(--burgundy);}
.card .fig{width:100%;aspect-ratio:16/9;object-fit:contain;background:#fff;padding:.7rem;border-bottom:1px solid var(--rule);}
.card .body{padding:1.1rem 1.25rem 1.25rem;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-block;width:fit-content;background:var(--burgundy);color:#fff;
  font-size:.62rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  padding:.2rem .5rem;margin-bottom:.6rem;
}
.card h3{font-family:var(--serif);font-weight:600;font-size:1.28rem;line-height:1.3;margin:0 0 .3rem;}
.card h3 a{color:var(--ink);border:none;}
.card h3 a:hover{color:var(--burgundy);}
.card .authors{font-size:.88rem;color:var(--muted);margin:0 0 .5rem;}
.card .authors .award{color:var(--burgundy);font-weight:600;}
.card p.sum{font-size:.95rem;color:var(--body);margin:0 0 1rem;}
.card .links{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:auto;}
.btn{
  font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;font-weight:600;
  padding:.38rem .8rem;border:1px solid var(--navy);border-radius:3px;
  color:var(--navy);background:transparent;
}
.btn:hover{background:var(--navy);color:#fff;}
.btn.solid{background:var(--navy);color:#fff;}
.btn.solid:hover{background:var(--navy-soft);border-color:var(--navy-soft);}

/* REFERENCES */
.refs{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
.ref{background:var(--bg);border:1px solid var(--rule);border-left:3px solid var(--navy);border-radius:2px;padding:1.1rem 1.25rem;}
.ref .rn{font-family:var(--serif);font-weight:600;font-size:1.15rem;margin:0 0 .2rem;}
.ref .rn a{color:var(--ink);border:none;}
.ref .rn a:hover{color:var(--burgundy);}
.ref .rt{font-size:.85rem;color:var(--muted);line-height:1.45;margin:0 0 .5rem;}
.ref a.email{font-size:.85rem;color:var(--navy);border:none;}

footer{border-top:1px solid var(--rule);padding:2rem 0 2.6rem;margin-top:1rem;}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;font-size:.82rem;color:var(--muted);}

/* PROJECT PAGES */
.back{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;font-weight:600;color:var(--muted);border:none;display:inline-block;margin:2.4rem 0 1.4rem;}
.back:hover{color:var(--navy);}
.paper-head h1{font-family:var(--serif);font-weight:600;font-size:2.3rem;line-height:1.18;color:var(--ink);margin:0 0 .5rem;letter-spacing:-.01em;}
.paper-head .meta{font-size:.98rem;color:var(--muted);margin:0 0 .3rem;}
.paper-head .award{color:var(--burgundy);font-weight:600;font-size:.95rem;}
.paper-fig{width:100%;max-width:760px;border:1px solid var(--rule);border-radius:2px;background:#fff;padding:1rem;margin:1.6rem 0;}
.paper-fig figcaption{font-size:.82rem;color:var(--muted);font-style:italic;margin-top:.6rem;text-align:center;}
.paper-body h2{font-family:var(--serif);font-weight:600;font-size:1.4rem;color:var(--navy);margin:1.8rem 0 .6rem;}
.paper-body p{font-size:1.05rem;line-height:1.8;margin:0 0 1rem;text-align:justify;}
.paper-links{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.6rem 0 1rem;}

/* RESPONSIVE */
@media(max-width:820px){
  .research-grid{grid-template-columns:1fr;}
  .refs{grid-template-columns:1fr;}
}
@media(max-width:680px){
  body{font-size:16px;}
  .hero{flex-direction:column;gap:1.5rem;padding-top:2.4rem;}
  .hero h1{font-size:2.3rem;}
  .portrait img{width:170px;height:170px;}
  .wrap,.nav-inner{padding-left:1.25rem;padding-right:1.25rem;}
  .nav-links{gap:1rem;}
  .nav-links a:not(.cv){display:none;}
  .paper-head h1{font-size:1.7rem;}
}