:root{
  --bg: #0b0f19;
  --panel: rgba(255,255,255,0.06);
  --panel2: rgba(255,255,255,0.10);
  --text: #e9edf5;
  --muted: rgba(233,237,245,0.70);
  --border: rgba(255,255,255,0.10);
  --shadow: 0 10px 30px rgba(0,0,0,.22);
  --radius: 18px;
  --maxw: 1100px;
  --accent: #7dd3fc; /* sky */
  --accent2: #a78bfa; /* violet */
}

[data-theme="light"]{
  --bg: #f7f8fb;
  --panel: rgba(16,24,40,0.06);
  --panel2: rgba(16,24,40,0.10);
  --text: #101828;
  --muted: rgba(16,24,40,0.65);
  --border: rgba(16,24,40,0.14);
  --shadow: 0 10px 30px rgba(0,0,0,.22);
}

*{box-sizing:border-box}
html,body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background-color: var(--bg) !important;
  color: var(--text);
  line-height: 1.55;
  transition: none !important;
}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(125,211,252,.25), transparent 60%),
    radial-gradient(900px 700px at 90% 0%, rgba(167,139,250,.20), transparent 55%),
    radial-gradient(900px 700px at 70% 120%, rgba(34,211,238,.12), transparent 55%),
    var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a{color: inherit; text-decoration: none}
a:hover{opacity: .92}
small{color: var(--muted)}
img{max-width:100%; display:block}

.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 18px 70px;
}

.nav{
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(0,0,0,.25), rgba(0,0,0,0));
}
[data-theme="light"] .nav{
  background: linear-gradient(to bottom, rgba(255,255,255,.70), rgba(255,255,255,0));
}
.nav-inner{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 18px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
}
.brand{
  display:flex; align-items:center; gap: 10px;
}
.brand-badge{
  width: 34px; height: 34px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: var(--shadow);
}
.brand-title{
  font-weight: 750;
  letter-spacing: -0.03em;
  font-size: 30px;
  line-height: 1.05;
}
.nav-links{
  display:flex;
  align-items:center;
  gap: 6px;
  flex-wrap: nowrap;
  white-space: nowrap;
  overflow-x: visible;  /* allow full label */
  padding-right: 18px;
}
.chip{
  padding: 6px 7px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  font-size: 13px;
  color: var(--muted);
  transition: color .15s ease, opacity .15s ease;
}
.chip.active{
  color: var(--text);
  background: rgba(255,255,255,0.06);
  border-color: rgba(125,211,252,.22);
}
.actions{display:flex; gap: 10px; align-items:center}
.btn{
  padding: 8px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 13px;
  cursor:pointer;
  transition: background .15s ease, border-color .15s ease, transform .15s ease, opacity .15s ease;
}
.btn:hover{
  background: rgba(255,255,255,0.12);
  border-color: rgba(125,211,252,.40);
  transform: translateY(-1px);
}
.btn.primary{
  border-color: rgba(125,211,252,.35);
  background: rgba(125,211,252,.12);
}
.hamburger{display:none}
@media (max-width: 920px){
  .nav-links{display:none}
  .hamburger{display:inline-flex}
  .nav.open .nav-links{
    display:flex;
    padding-top: 10px;
  }
  .nav-inner{flex-wrap:wrap; align-items:flex-start}
}

.hero{
  margin-top: 18px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius);
  box-shadow: none;
  overflow:hidden;
}
.hero-inner{
  display:grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 0;
}
@media (max-width: 900px){
  .hero-inner{grid-template-columns: 1fr}
}
.hero-copy{
  padding: 26px 26px 24px;
}
.kicker{
  display:inline-flex;
  gap: 8px;
  align-items:center;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  font-size: 12px;
}
.kicker b{color: var(--text)}
h1{
  margin: 14px 0 12px;
  font-size: clamp(26px, 3.0vw, 38px);
  letter-spacing:-0.03em;
  line-height: 1.08;
}
.lede{
  color: var(--muted);
  font-size: 15.5px;
  max-width: 70ch;
}
.hero-cta{
  display:flex; flex-wrap:wrap; gap: 10px;
  margin-top: 16px;
}
.hero-meta{
  margin-top: 18px;
  display:flex; flex-wrap:wrap; gap: 10px;
}
.pill{
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.10);
  background: transparent;
  color: var(--muted);
  font-size: 14px;
}
.hero-photo{
  position:relative;
  padding: 22px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: transparent;
}
.portrait{
  width: min(330px, 86%);
  border-radius: 22px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 80px rgba(0,0,0,.35);
  overflow:hidden;
}
.portrait img{width:100%; height:auto}
.caption{
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
  text-align:center;
}

.section{
  margin-top: 18px;
}
.section h2{
  margin: 20px 0 10px;
  font-size: 20px;
  letter-spacing:-0.02em;
}
.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius);
  box-shadow: none;
  padding: 16px 16px 14px;
}
.card h3{
  margin: 0 0 6px;
  font-size: 16px;
  letter-spacing:-0.02em;
}
.card p{margin: 0; color: var(--muted); font-size: 14px}
.card .meta{margin-top:10px; color: var(--muted); font-size: 12.5px; display:flex; gap: 12px; flex-wrap:wrap}
.card a.inline{
  text-decoration: underline;
  text-underline-offset: 3px;
}
.col-12{grid-column: span 12}
.col-8{grid-column: span 8}
.col-6{grid-column: span 6}
.col-4{grid-column: span 4}
@media (max-width: 900px){
  .col-8,.col-6,.col-4{grid-column: span 12}
}

.timeline{
  display:flex;
  flex-direction:column;
  gap: 12px;
}
.tl-item{
  display:grid;
  grid-template-columns: 160px 1fr;
  gap: 14px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: transparent;
}
@media (max-width: 700px){
  .tl-item{grid-template-columns: 1fr}
}
.tl-time{
  color: var(--muted);
  font-size: 13px;
}
.tl-title{
  font-weight: 650;
  letter-spacing:-0.02em;
}
.tl-sub{
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}
.tags{margin-top: 10px; display:flex; flex-wrap:wrap; gap: 8px}
.tag{
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}

.footer{
  margin-top: 34px;
  color: var(--muted);
  display:flex;
  justify-content: space-between;
  flex-wrap:wrap;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
kbd{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  padding: 2px 6px;
  border-radius: 8px;
  font-size: 12px;
}
.notice{
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 13px;
}

.linkrow{
  display:flex;
  flex-wrap:wrap;
  gap: 14px;
  margin-top: 10px;
}
.linkrow a{
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.linkrow a:hover{color: var(--text)}

.chip:hover{
  color: var(--text);
  opacity: .95;
}

.dropdown{position: relative; display:inline-flex; align-items:center}
.dropdown > .chip{white-space:nowrap}
.dropdown-menu{
  position:absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 170px;
  padding: 8px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(10,14,24,0.92);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  display:none;
  flex-direction:column;
  gap: 6px;
}
[data-theme="light"] .dropdown-menu{background: rgba(255,255,255,0.92)}
.dropdown:hover .dropdown-menu{display:flex}
.dropdown-menu a{
  padding: 9px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
}
.dropdown-menu a:hover{
  background: rgba(255,255,255,0.08);
  border-color: rgba(125,211,252,.20);
  color: var(--text);
}

.footer-copy{
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.map-anim{
  margin-top: 12px;
  height: 260px;
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow:hidden;
  position:relative;
  background:
    radial-gradient(420px 260px at 20% 40%, rgba(125,211,252,.22), transparent 60%),
    radial-gradient(520px 320px at 75% 55%, rgba(167,139,250,.18), transparent 60%),
    linear-gradient(120deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
}
.map-anim::before{
  content:"";
  position:absolute; inset:-40%;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.12) 0 1px, transparent 1px 18px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.10) 0 1px, transparent 1px 18px);
  opacity:.35;
  transform: rotate(8deg);
  animation: drift 6.5s ease-in-out infinite;
}
.map-anim::after{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(12px 12px at 18% 35%, rgba(125,211,252,.9), transparent 60%),
    radial-gradient(10px 10px at 35% 55%, rgba(167,139,250,.85), transparent 60%),
    radial-gradient(11px 11px at 62% 40%, rgba(34,211,238,.9), transparent 60%),
    radial-gradient(9px 9px at 78% 62%, rgba(125,211,252,.85), transparent 60%);
  opacity:.55;
  animation: pulse 2.8s ease-in-out infinite;
}
@keyframes drift{
  0%,100%{transform: translate3d(-2%, -1%, 0) rotate(8deg)}
  50%{transform: translate3d(2%, 2%, 0) rotate(8deg)}
}
@keyframes pulse{
  0%,100%{opacity:.40}
  50%{opacity:.70}
}
.map-anim-label{
  position:absolute;
  left: 14px; bottom: 12px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.10);
  padding: 6px 8px;
  border-radius: 999px;
}

.map-gif-wrap{
  margin-top: 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow:hidden;
  background: rgba(0,0,0,0.14);
  aspect-ratio: 16 / 9;
  display:flex;
  align-items:center;
  justify-content:center;
}
.map-gif{
  width: 100%;
  height: 100%;
  object-fit: contain;
  display:block;
}
@media (max-width: 900px){
  .map-gif{height: 260px;}
}

.card.col-12{padding-bottom: 16px}

html{background-color: var(--bg) !important;} 

/* Prevent layout shift between pages with/without vertical scrollbars */
html{
  overflow-y: scroll;            /* always reserve scrollbar space */
  scrollbar-gutter: stable;      /* modern browsers: keep gutter stable */
}

@keyframes spectrumSweep{
  0%{transform: translateX(-30%);}
  50%{transform: translateX(0%);}
  100%{transform: translateX(30%);}
}

.award-callout{
  position: relative;
  overflow:hidden;
}
.award-callout::after{
  content:"";
  position:absolute;
  left:-30%;
  bottom:0;
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(125,211,252,.95), rgba(167,139,250,.95), transparent);
  animation: sweep 2.8s ease-in-out infinite;
  opacity: .95;
}
@keyframes sweep{
  0%{transform: translateX(0)}
  50%{transform: translateX(260%)}
  100%{transform: translateX(0)}
}

.header-inner{
  overflow: visible;padding-right:12px;}

.header-actions{display:flex; align-items:center; gap: 10px;}

.header-actions .btn{
  padding: 7px 9px;
  font-size: 12px;
}

/* Awards-only spectrum sweep */
.award-callout{
  position: relative;
  overflow: hidden;
}
.award-callout::after{
  content:"";
  position:absolute;
  left:-35%;
  bottom:0;
  width:45%;
  height:3px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(96,165,250,0.9),
    rgba(167,139,250,0.9),
    rgba(244,114,182,0.9),
    transparent
  );
  animation: awardSweep 3s ease-in-out infinite;
}
@keyframes awardSweep{
  0%{transform: translateX(0);}
  50%{transform: translateX(280%);}
  100%{transform: translateX(0);}
}

/* ─── Card hover: lift + border glow ─── */
.card{
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover{
  transform: translateY(-3px);
  border-color: rgba(125,211,252,.28);
  box-shadow: 0 8px 30px rgba(125,211,252,.08);
}

/* ─── Tag hover ─── */
.tag{
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.tag:hover{
  background: rgba(125,211,252,.10);
  border-color: rgba(125,211,252,.30);
  color: var(--text);
}

/* ─── Portrait hover ─── */
.portrait img{
  transition: transform .35s ease;
}
.portrait:hover img{
  transform: scale(1.03);
}

/* ─── Project link pills (replaces plain underlined text) ─── */
.card .meta a.inline{
  display:inline-flex;
  align-items:center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  text-decoration: none;
  font-size: 12px;
  color: var(--muted);
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.card .meta a.inline:hover{
  background: rgba(125,211,252,.10);
  border-color: rgba(125,211,252,.30);
  color: var(--text);
}

/* ─── Timeline item hover ─── */
.tl-item{
  transition: border-color .2s ease, background .2s ease;
}
.tl-item:hover{
  border-color: rgba(125,211,252,.22);
  background: rgba(255,255,255,0.02);
}

/* ─── Scroll-reveal ─── */
.reveal{
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal.visible{
  opacity: 1;
  transform: translateY(0);
}

/* ─── Smooth mobile nav drawer ─── */
@media (max-width: 920px){
  .nav-links{
    display:flex !important;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease, opacity .25s ease;
    opacity: 0;
    width: 100%;
    padding-top: 0;
    flex-wrap: wrap;
  }
  .nav.open .nav-links{
    max-height: 300px;
    opacity: 1;
    padding-top: 10px;
  }
}

/* ─── Back-to-top button ─── */
.back-to-top{
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(11,15,25,.75);
  backdrop-filter: blur(10px);
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease, background .15s ease, border-color .15s ease;
  z-index: 50;
}
[data-theme="light"] .back-to-top{
  background: rgba(247,248,251,.75);
}
.back-to-top.show{
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover{
  background: rgba(125,211,252,.12);
  border-color: rgba(125,211,252,.35);
  color: var(--text);
}