/* main.css — lightweight academic style (US-style faculty profile) */
:root{
  --bg: #ffffff;
  --surface: #ffffff;
  --ink: #0b1220;
  --muted: rgba(11, 18, 32, 0.72);
  --hairline: rgba(11, 18, 32, 0.12);
  --soft: rgba(11, 18, 32, 0.06);
  --accent: #3b5ccc;
  --accent2: #7c3aed;
  --maxw: 1040px;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(11,18,32,0.10);
  --shadow2: 0 18px 55px rgba(11,18,32,0.12);
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  --serif: ui-serif, Georgia, "Times New Roman", Times, serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace;
}
*{ box-sizing: border-box; }
html, body{ height:100%; }
body{
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
a{ color: var(--accent); text-decoration: none; }
a:hover{ text-decoration: underline; }

.container{ max-width: var(--maxw); margin: 0 auto; padding: 28px 18px 80px; }

.skip{ position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden; }
.skip:focus{
  left: 18px; top: 12px; width:auto; height:auto; padding: 10px 12px;
  border-radius: 12px; background: var(--surface); border: 1px solid var(--hairline);
  box-shadow: var(--shadow); z-index: 9999;
}

.topbar{
  display:flex; align-items:center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding-bottom: 16px; border-bottom: 1px solid var(--hairline);
}
.brand{ display:flex; align-items:center; gap: 14px; min-width: 260px; }
.mark{ width: 360px; height: 360px; overflow:hidden; display:flex; align-items:center; justify-content:center; }
.brand h1{ margin: 0; font-size: 1.05rem; letter-spacing: 0.2px; }
.brand .sub{ margin: 2px 0 0; font-size: 0.92rem; color: var(--muted); }

.nav{ display:flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.nav a{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 8px 10px; border-radius: 12px;
  color: rgba(11,18,32,0.82); border: 1px solid transparent;
}
.nav a:hover{ background: rgba(59,92,204,0.06); border-color: rgba(59,92,204,0.18); text-decoration: none; }
.nav a.active{ background: rgba(59,92,204,0.10); border-color: rgba(59,92,204,0.22); }

.hero{
  display:grid; grid-template-columns: 1.1fr 0.9fr;
  gap: 18px; margin-top: 22px; align-items: stretch;
}
@media (max-width: 860px){ .hero{ grid-template-columns: 1fr; } }

.card{
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}

.hero-main{ padding: 22px 20px; position: relative; }
.hero-main::before{
  content:""; position:absolute; inset:-2px;
  background:
    radial-gradient(520px 240px at 12% 0%, rgba(59,92,204,0.14), transparent 60%),
    radial-gradient(480px 240px at 80% 20%, rgba(124,58,237,0.10), transparent 60%);
  pointer-events:none;
}
.hero-main > *{ position: relative; }
.kicker{ font-family: var(--mono); font-size: 0.85rem; color: rgba(11,18,32,0.70); margin: 0 0 10px; }
.hero-main h2{
  font-family: var(--serif);
  margin: 0 0 10px;
  font-size: clamp(1.55rem, 2.7vw, 2.05rem);
  line-height: 1.18;
  letter-spacing: 0.2px;
}
.hero-main p{ margin: 0 0 14px; color: var(--muted); max-width: 80ch; }

.actions{ display:flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap: 8px;
  padding: 10px 12px; border-radius: 14px;
  border: 1px solid var(--hairline);
  background: #fff; color: rgba(11,18,32,0.88);
  font-weight: 600; font-size: 0.95rem;
}
.btn:hover{
  text-decoration:none;
  border-color: rgba(59,92,204,0.35);
  box-shadow: 0 10px 26px rgba(59,92,204,0.10);
}
.btn.primary{
  background: linear-gradient(180deg, rgba(59,92,204,0.12), rgba(59,92,204,0.06));
  border-color: rgba(59,92,204,0.26);
  color: rgba(11,18,32,0.95);
}
.btn.primary:hover{ box-shadow: 0 14px 36px rgba(59,92,204,0.14); }

.hero-side{ display:flex; flex-direction: column; min-height: 100%; }
.profile{ padding: 18px 16px 16px; display:flex; flex-direction: column; gap: 12px; height:100%;  padding: 22px 18px 20px; }
.avatar{ display:flex; align-items:center; gap: 14px; }
.avatar img{
  width: 220px; height: 220px; /* larger photo */
  border-radius: 26px;
  object-fit: cover;
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow);
}
.avatar .who{ min-width: 220px; }
.avatar .who strong{ display:block; font-size: 1.02rem; }
.avatar .who span{ display:block; color: var(--muted); font-size: 0.92rem; margin-top: 6px; line-height: 1.35; }

.factgrid{ display:grid; grid-template-columns: 1fr; gap: 8px; margin-top: 2px; }
.fact{
  display:flex; justify-content: space-between; gap: 10px;
  padding: 10px 12px; border-radius: 14px;
  border: 1px solid var(--soft);
  background: rgba(11,18,32,0.02);
}
.fact b{ font-family: var(--mono); font-size: 0.82rem; color: rgba(11,18,32,0.72); }
.fact span{ color: rgba(11,18,32,0.82); font-size: 0.92rem; text-align:right; }

.section{ margin-top: 26px; }
.section h3{ margin: 0 0 10px; font-size: 1.05rem; letter-spacing: 0.2px; }

.grid{ display:grid; grid-template-columns: repeat(12, 1fr); gap: 14px; }
.col6{ grid-column: span 12; }
@media (min-width: 860px){ .col6{ grid-column: span 6; } }

.block{ padding: 18px 16px; }
.block h4{ margin: 0 0 8px; font-size: 1.02rem; }
.block p{ margin: 0; color: var(--muted); }

/* Rich content styling for imported legacy HTML */
.rich h1, .rich h2, .rich h3, .rich h4{
  font-family: var(--serif);
  margin: 0 0 10px;
  line-height: 1.2;
}
.rich h3{
  font-size: 1.25rem;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 10px;
}
.rich h4{ font-size: 1.05rem; margin-top: 18px; }
.rich p{ color: var(--muted); }
.rich img{ max-width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--hairline); }
.rich iframe{ width: 100%; max-width: 100%; border-radius: 14px; border: 1px solid var(--hairline); }
.rich table{ width: 100%; border-collapse: collapse; }
.rich td, .rich th{ padding: 10px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
.rich .tag{
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(11,18,32,0.12);
  background: rgba(11,18,32,0.03);
  color: rgba(11,18,32,0.72);
  display:inline-block;
}

ul.clean{ margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
ul.clean li{ margin: 6px 0; }

.footer{
  margin-top: 34px;
  padding-top: 14px;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 0.92rem;
  display:flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.smalllinks{ display:flex; gap: 12px; flex-wrap: wrap; align-items:center; }
.badge{
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(11,18,32,0.10);
  background: rgba(11,18,32,0.03);
  color: rgba(11,18,32,0.70);
}


/* Subtle icons (MIT-style) for profile links */

.iconbtn{
  display:inline-flex;
  align-items:center;
  gap: 8px;
}
.icon{
  width: 16px;
  height: 16px;
  display:inline-block;
  vertical-align: -2px;
  opacity: 0.82;
}
.icon svg{ width:16px; height:16px; display:block; fill: rgba(11,18,32,0.74); }
.btn:hover .icon svg{ fill: rgba(11,18,32,0.88); }

/* Publications: subtle separation by category */
.pub-section{
  margin-top: 18px;
  padding-top: 6px;
}
.pub-section > h4{
  margin-top: 18px;
  margin-bottom: 6px;
}
.pub-box{
  border: 1px solid rgba(11,18,32,0.10);
  border-radius: 16px;
  background: rgba(11,18,32,0.015);
  padding: 10px 14px;
  margin: 10px 0 18px;
}
.pub-box.journal{ background: rgba(59,92,204,0.03); border-color: rgba(59,92,204,0.14); }
.pub-box.conference{ background: rgba(124,58,237,0.03); border-color: rgba(124,58,237,0.14); }
.pub-box.book{ background: rgba(11,18,32,0.012); border-color: rgba(11,18,32,0.10); }
.pub-box.special{ background: rgba(11,18,32,0.02); border-style: dashed; border-color: rgba(11,18,32,0.16); }

.pub-box .tag{ opacity: 0.95; }


/* Affiliation badges under name */
.affils{
  display:flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.affil{ font-family: var(--mono); font-size: 0.78rem; padding: 4px 8px; border-radius: 999px; border: 1px solid transparent; background: transparent; color: rgba(11,18,32,0.68); }

/* Callout box */
.callout{
  border: 1px solid rgba(59,92,204,0.18);
  background: rgba(59,92,204,0.04);
  border-radius: 16px;
  padding: 14px 14px;
  margin: 14px 0 18px;
}
.callout h4{ margin: 0 0 6px; }
.callout p{ margin: 0; color: rgba(11,18,32,0.72); }
.callout ul{ margin: 10px 0 0; padding-left: 18px; color: rgba(11,18,32,0.72); }
.callout li{ margin: 6px 0; }

/* Timeline layout for PhD students */
.timeline{
  margin-top: 10px;
}
.tl-item{
  display:grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(11,18,32,0.10);
}
.tl-year{
  font-family: var(--mono);
  color: rgba(11,18,32,0.70);
  font-size: 0.92rem;
  padding-top: 2px;
}
.tl-title{
  font-size: 0.98rem;
  color: rgba(11,18,32,0.88);
}
.tl-thesis{
  color: rgba(11,18,32,0.82);
}
.tl-meta{
  margin-top: 6px;
  color: rgba(11,18,32,0.70);
  font-size: 0.94rem;
}

.affil-link{
  display:inline-flex;
  align-items:center;
  gap: 6px;
  text-decoration: none;
}
.affil-link:hover{ text-decoration: none; border-color: rgba(11,18,32,0.14); background: rgba(11,18,32,0.03); }

/* Header logo inside .mark */
.mark{ width: 360px; height: 360px; overflow:hidden; display:flex; align-items:center; justify-content:center; }
.mark img{ width: 100%; height: 100%; object-fit: contain; }

/* Vertical avatar layout: name and roles under photo */
.avatar-vertical{
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.avatar-vertical .who{
  margin-top: 14px;
}
.avatar-vertical .who strong{
  display:block;
  font-size: 1.05rem;
  margin-bottom: 6px;
}

/* Micro-polish: tighter roles + faint divider */
.avatar-vertical .who{
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(11,18,32,0.08);
}
.avatar-vertical .who span{
  margin-top: 4px;       /* tighter vertical spacing */
  line-height: 1.28;
}


/* Header logo sizing override */
.topbar .brand .mark{
  width: 360px !important;
  height: 360px !important;
}
.topbar .brand{ align-items: flex-start; }
.topbar .brand .sub{ margin-top: 8px; }