/* ============================================================================
   Amirul Islam — personal site
   Based on the C2NS "signal-domain" theme (communicationlab.github.io/research)
   Palette : white foundation + spectrum gradient (RF→mmWave→THz→optical)
   Type    : Space Grotesk (display) · Inter (body) · JetBrains Mono (data)
   ========================================================================== */

:root{
  /* surfaces */
  --ink:#ffffff;
  --surface:#ffffff;
  --surface-2:#f5f7fc;
  --surface-3:#eceff6;
  --line:rgba(15,23,42,.10);
  --line-2:rgba(15,23,42,.17);

  /* text */
  --mist:#0f172a;
  --soft:#334155;
  --muted:#64748b;

  /* spectrum accents */
  --rf:#0e7490;         /* cyan  — sub-6 / RF   */
  --mm:#4f46e5;         /* indigo — mmWave      */
  --thz:#9333ea;        /* violet — THz         */
  --signal:#0f766e;     /* teal — signature accent for hero/about */
  --spectrum:linear-gradient(90deg,var(--rf),var(--mm) 55%,var(--thz));
  --spectrum-soft:linear-gradient(120deg,rgba(34,211,238,.16),rgba(99,102,241,.14),rgba(168,85,247,.16));

  --radius:16px;
  --radius-sm:10px;
  --wrap:1160px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-d:"Space Grotesk",system-ui,sans-serif;
  --font-b:"Inter",system-ui,sans-serif;
  --font-m:"JetBrains Mono",ui-monospace,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;
  font-family:var(--font-b);
  color:var(--soft);
  background:var(--ink);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-d);color:var(--mist);line-height:1.12;letter-spacing:-.02em;font-weight:600;margin:0}
p{margin:0 0 1rem}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}

/* ambient background wash */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(60vw 60vw at 82% -8%,rgba(79,70,229,.06),transparent 60%),
    radial-gradient(50vw 50vw at -6% 12%,rgba(14,116,144,.05),transparent 55%),
    radial-gradient(50vw 40vw at 50% 108%,rgba(147,51,234,.05),transparent 60%);
}

/* recurring signature: thin spectrum band */
.spectrum-bar{display:block;height:3px;width:100%;background:var(--spectrum);opacity:.9}

/* accessibility */
.skip-link{position:absolute;left:-999px;top:0;background:var(--rf);color:#ffffff;padding:.6rem 1rem;border-radius:0 0 8px 0;z-index:200}
.skip-link:focus{left:0}
:focus-visible{outline:2px solid var(--rf);outline-offset:3px;border-radius:4px}

/* ============================ NAV ========================================= */
.nav{position:sticky;top:0;z-index:100;backdrop-filter:blur(14px);
  background:rgba(255,255,255,.72);border-bottom:1px solid transparent;transition:background .3s,border-color .3s}
.nav.is-scrolled{background:rgba(255,255,255,.88);border-bottom-color:var(--line)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:.7rem}
.brand__mark{display:inline-flex;gap:3px;align-items:flex-end;height:22px}
.brand__mark span{width:4px;border-radius:2px;background:var(--spectrum);display:block;animation:eq 1.6s var(--ease) infinite}
.brand__mark span:nth-child(1){height:10px;animation-delay:0s;background:var(--rf)}
.brand__mark span:nth-child(2){height:20px;animation-delay:.2s;background:var(--mm)}
.brand__mark span:nth-child(3){height:14px;animation-delay:.4s;background:var(--thz)}
@keyframes eq{0%,100%{transform:scaleY(.5)}50%{transform:scaleY(1)}}
.brand__text{display:flex;flex-direction:column;line-height:1.05}
.brand__text b{font-family:var(--font-d);font-size:1.02rem;color:var(--mist);letter-spacing:.02em}
.brand__text i{font-style:normal;font-size:.66rem;color:var(--muted);font-family:var(--font-m);letter-spacing:.04em}
.nav__links{display:flex;gap:.35rem;align-items:center}
.nav__links a{font-size:.92rem;color:var(--soft);padding:.5rem .8rem;border-radius:8px;position:relative;transition:color .2s,background .2s}
.nav__links a:hover{color:var(--mist);background:rgba(15,23,42,.05)}
.nav__links a.is-active{color:var(--mist)}
.nav__links a.is-active::after{content:"";position:absolute;left:.8rem;right:.8rem;bottom:.28rem;height:2px;border-radius:2px;background:var(--spectrum)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--mist);border-radius:2px;transition:transform .3s,opacity .3s}
.nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){opacity:0}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:860px){
  .nav__toggle{display:flex}
  .nav__links{position:fixed;inset:70px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);
    padding:.6rem clamp(20px,5vw,40px) 1.2rem;
    transform:translateY(-14px);opacity:0;pointer-events:none;transition:.28s var(--ease)}
  .nav__links.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav__links a{padding:.85rem .4rem;border-bottom:1px solid var(--line)}
  .nav__links a.is-active::after{display:none}
}

/* ============================ BUTTONS / LINKS ============================= */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-d);font-weight:500;
  font-size:.95rem;padding:.8rem 1.4rem;border-radius:999px;cursor:pointer;border:1px solid transparent;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
.btn--primary{background:var(--spectrum);color:#ffffff;box-shadow:0 8px 30px -12px rgba(99,102,241,.7)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -12px rgba(99,102,241,.85)}
.btn--ghost{border-color:var(--line-2);color:var(--mist)}
.btn--ghost:hover{border-color:var(--rf);color:var(--rf);transform:translateY(-2px)}
.text-link{font-family:var(--font-d);color:var(--rf);font-weight:500;display:inline-block;transition:.2s}
.text-link:hover{filter:brightness(1.15);transform:translateX(3px)}

/* eyebrow / section heads */
.eyebrow{font-family:var(--font-m);font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;color:var(--rf);margin:0 0 .8rem}
.section{padding:clamp(40px,5.5vw,76px) 0}
.section__head{max-width:660px;margin-bottom:clamp(2rem,5vw,3.4rem)}
.section__head h2{font-size:clamp(1.8rem,4.2vw,2.9rem)}
.section__head p{color:var(--muted);margin-top:.9rem;font-size:1.05rem}
.section--alt{background:#f4f6fb}

/* ============================ HERO ======================================= */
.hero{position:relative;min-height:min(92vh,820px);display:flex;align-items:center;overflow:hidden;border-bottom:1px solid var(--line)}
#heroCanvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,255,255,.5) 72%,#ffffff)}
.hero__inner{position:relative;z-index:2;padding-block:clamp(3rem,8vw,5rem)}
.hero__kicker{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--font-m);font-size:.74rem;
  letter-spacing:.2em;text-transform:uppercase;color:var(--soft);padding:.4rem .9rem;border:1px solid var(--line-2);
  border-radius:999px;background:rgba(11,17,32,.5);margin-bottom:1.5rem}
.hero__kicker::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--rf);box-shadow:0 0 12px var(--rf);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(2.3rem,6vw,4.4rem);max-width:15ch;font-weight:600}
.hero h1 .grad{background:var(--spectrum);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__lead{color:var(--soft);font-size:clamp(1.02rem,1.6vw,1.22rem);max-width:56ch;margin-top:1.5rem}
.hero__cta{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2.2rem}
.hero__scroll{position:absolute;bottom:1.4rem;left:50%;transform:translateX(-50%);z-index:2;
  font-family:var(--font-m);font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);
  display:flex;flex-direction:column;align-items:center;gap:.5rem}
.hero__scroll span{width:1px;height:34px;background:linear-gradient(var(--rf),transparent);animation:drop 2s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}50.1%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============================ STATS ====================================== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:var(--surface);padding:2rem 1.4rem;text-align:center}
.stat__num{font-family:var(--font-d);font-size:clamp(2rem,4vw,2.9rem);color:var(--mist);font-weight:600;
  background:var(--spectrum);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat__label{font-size:.82rem;color:var(--muted);margin-top:.35rem;letter-spacing:.02em}
@media (max-width:720px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ============================ RESEARCH CARDS ============================= */
.rgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
@media (max-width:960px){.rgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.rgrid{grid-template-columns:1fr}}
.rcard{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.7rem 1.6rem 1.9rem;overflow:hidden;transition:transform .3s var(--ease),border-color .3s,background .3s}
.rcard::before{content:"";position:absolute;left:0;top:0;height:100%;width:3px;background:var(--spectrum);
  transform:scaleY(0);transform-origin:top;transition:transform .35s var(--ease)}
.rcard:hover{transform:translateY(-5px);border-color:var(--line-2);background:var(--surface-2)}
.rcard:hover::before{transform:scaleY(1)}
.rcard__band{font-family:var(--font-m);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--rf);border:1px solid var(--line-2);border-radius:999px;padding:.24rem .6rem;display:inline-block}
.rcard__icon{width:48px;height:48px;margin:1.1rem 0 1rem;border-radius:12px;display:grid;place-items:center;
  background:var(--spectrum-soft);border:1px solid var(--line-2)}
.rcard__icon svg{width:24px;height:24px;color:var(--rf)}
.rcard h3{font-size:1.16rem;margin-bottom:.6rem}
.rcard p{color:var(--muted);font-size:.94rem;margin-bottom:1rem}
.rcard__pts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.4rem}
.rcard__pts li{font-size:.86rem;color:var(--soft);padding-left:1.1rem;position:relative}
.rcard__pts li::before{content:"";position:absolute;left:0;top:.55em;width:5px;height:5px;border-radius:50%;background:var(--mm)}

/* ============================ PEOPLE (brief cards) ======================= */
.people{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
@media (max-width:820px){.people{grid-template-columns:1fr}}
.person{display:flex;gap:1.3rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.5rem;transition:transform .3s var(--ease),border-color .3s}
.person:hover{transform:translateY(-4px);border-color:var(--line-2)}
.person__photo{position:relative;flex:0 0 104px;height:104px;border-radius:14px;overflow:hidden;border:1px solid var(--line-2)}
.person__photo img{width:100%;height:100%;object-fit:cover}
.person__mono{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--font-d);font-size:2rem;
  color:var(--mist);background:var(--spectrum-soft)}
.person__body h3{font-size:1.18rem}
.person__role{color:var(--rf);font-size:.82rem;font-family:var(--font-m);letter-spacing:.02em;margin:.2rem 0 .7rem}
.person__short{color:var(--muted);font-size:.9rem;margin-bottom:.9rem}
.person__links{display:flex;gap:1rem;margin-top:.3rem}
.person__links a{font-size:.82rem;color:var(--rf);font-family:var(--font-d)}
.person__links a:hover{filter:brightness(1.2)}

.chips{display:flex;flex-wrap:wrap;gap:.4rem}
.chip{font-family:var(--font-m);font-size:.68rem;letter-spacing:.02em;color:var(--soft);
  background:rgba(99,102,241,.1);border:1px solid var(--line-2);border-radius:999px;padding:.24rem .62rem}

/* ============================ DOSSIER (people page) ===================== */
.dossier{display:grid;grid-template-columns:290px 1fr;gap:2.4rem;padding:clamp(2rem,4vw,3rem);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:2rem;scroll-margin-top:90px}
@media (max-width:820px){.dossier{grid-template-columns:1fr;gap:1.6rem}}
.dossier__photo{position:relative;aspect-ratio:1;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-2)}
.dossier__photo img{width:100%;height:100%;object-fit:cover}
.dossier__meta{display:flex;gap:1.4rem;margin:1.2rem 0;padding:0}
.dossier__meta div{display:flex;flex-direction:column}
.dossier__meta dt{font-family:var(--font-m);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.dossier__meta dd{margin:0;font-family:var(--font-d);color:var(--mist);font-size:1.05rem}
.dossier__links{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.4rem}
.dossier__links a{font-size:.86rem;color:var(--rf);font-family:var(--font-d)}
.dossier__stats{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.dossier__stats div{background:var(--surface-2);padding:.9rem;text-align:center}
.dossier__stats b{display:block;font-family:var(--font-d);font-size:1.15rem;color:var(--mist);
  background:var(--spectrum);-webkit-background-clip:text;background-clip:text;color:transparent}
.dossier__stats span{font-size:.68rem;color:var(--muted)}
.dossier__main h2{font-size:clamp(1.6rem,3.4vw,2.3rem);margin-bottom:1rem}
.dossier__main p{color:var(--soft);font-size:.98rem}
.dossier__h{font-family:var(--font-d);color:var(--mist);font-size:1.05rem;margin:1.8rem 0 .9rem;
  padding-top:1.4rem;border-top:1px solid var(--line);letter-spacing:.01em}
.timeline{list-style:none;margin:0 0 .5rem;padding:0;display:flex;flex-direction:column;gap:.9rem}
.timeline li{display:grid;grid-template-columns:64px 1fr;gap:1rem;align-items:baseline}
.timeline__year{font-family:var(--font-m);font-size:.8rem;color:var(--rf)}
.timeline b{color:var(--mist);font-weight:600;display:block;font-family:var(--font-d);font-size:.96rem}
.timeline em{color:var(--muted);font-style:normal;font-size:.86rem}
.tick{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:.55rem}
@media (max-width:620px){.tick{grid-template-columns:1fr}}
.tick li{position:relative;padding-left:1.4rem;font-size:.9rem;color:var(--soft)}
.tick li::before{content:"";position:absolute;left:0;top:.5em;width:8px;height:8px;border-radius:2px;background:var(--spectrum)}

/* ============================ PUBLICATIONS =============================== */
.pubtools{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;margin-bottom:2rem}
.pubfilters{display:flex;flex-wrap:wrap;gap:.4rem}
.pubfilters .fgroup{display:flex;gap:.3rem;flex-wrap:wrap;padding-right:.7rem;margin-right:.4rem;border-right:1px solid var(--line)}
.pubfilters .fgroup:last-child{border-right:0}
.fbtn{font-family:var(--font-m);font-size:.74rem;color:var(--muted);background:transparent;border:1px solid var(--line);
  border-radius:999px;padding:.4rem .8rem;cursor:pointer;transition:.2s}
.fbtn:hover{color:var(--mist);border-color:var(--line-2)}
.fbtn.is-on{color:#ffffff;background:var(--spectrum);border-color:transparent}
.pubsearch{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:.55rem 1rem;
  color:var(--mist);font-family:var(--font-b);font-size:.86rem;min-width:210px}
.pubsearch::placeholder{color:var(--muted)}
.pubsearch:focus{outline:none;border-color:var(--rf)}

.publist{list-style:none;margin:0;padding:0}
.pub{display:grid;grid-template-columns:70px 1fr;gap:1.2rem;padding:1.4rem 0;border-bottom:1px solid var(--line)}
.pub__year{font-family:var(--font-m);font-size:.9rem;color:var(--rf);padding-top:.2rem}
.pub__tags{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-bottom:.45rem}
.pub__badge{font-family:var(--font-m);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;padding:.2rem .5rem;border-radius:5px;border:1px solid var(--line-2)}
.pub__badge--journal{color:var(--rf);border-color:rgba(34,211,238,.4)}
.pub__badge--conference{color:var(--mm);border-color:rgba(99,102,241,.45)}
.pub__badge--patent{color:var(--thz);border-color:rgba(168,85,247,.45)}
.pub__badge--status{color:#22c55e; border-color:#22c55e55;}
/* Quartile badge (common style) */
.pub__badge--quartile{font-weight:600;}
/* Q1 */
.pub__badge--q1{color:#22c55e; border-color:rgba(34,197,94,.45); background:rgba(34,197,94,.08);}
/* Q2 */
.pub__badge--q2{color:#3b82f6; border-color:rgba(59,130,246,.45); background:rgba(59,130,246,.08);}
/* Q3 */
.pub__badge--q3{color:#f59e0b; border-color:rgba(245,158,11,.45); background:rgba(245,158,11,.08);}
/* Q4 */
.pub__badge--q4{ color:#9ca3af; border-color:rgba(156,163,175,.45); background:rgba(156,163,175,.08);}
.pub__who{font-size:.76rem;color:var(--muted)}
.pub__award{font-size:.72rem;color:#fcd34d;font-family:var(--font-m)}
.pub__title{margin:0 0 .3rem;font-family:var(--font-d);color:var(--mist);font-size:1.04rem;line-height:1.35;font-weight:500}
.pub__title a:hover{color:var(--rf)}
.pub__meta{margin:0;font-size:.86rem;color:var(--muted)}
.pub__authors{color:var(--soft)}
.pub__who{display:none;}
#pubEmpty{display:none;padding:2rem 0;color:var(--muted);font-family:var(--font-m)}
@media (max-width:600px){.pub{grid-template-columns:1fr;gap:.5rem}.pub__year{padding-top:0}}

/* ============================ PROJECTS =================================== */
.pgrid{display:grid; grid-template-columns:1fr; gap:2rem; max-width:1200px; margin:0 auto;}
@media (max-width:820px){.pgrid{grid-template-columns:1fr}}
.proj{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.proj:hover{transform:translateY(-4px);border-color:var(--signal);box-shadow:0 20px 44px -26px rgba(15,23,42,.4)}
.proj__fig{height:420px;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;padding:1rem;overflow:hidden}
.proj__fig img{max-width:100%;max-height:100%;object-fit:contain;display:block}
.proj{max-width:1200px; margin:auto;}
.proj__fig--ph{background:var(--spectrum-soft);border-bottom:1px solid var(--line)}
.proj__fig--ph span{font-family:var(--font-m);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--rf)}
.proj__pad{padding:1.5rem 1.6rem 1.6rem;display:flex;flex-direction:column;flex:1}
.proj__top{display:flex;justify-content:space-between;gap:1rem;margin-bottom:.9rem;align-items:center}
.proj__role{font-family:var(--font-m);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--rf);
  border:1px solid var(--line-2);border-radius:999px;padding:.24rem .6rem}
.proj__period{font-family:var(--font-m);font-size:.76rem;color:var(--muted)}
.proj h3{font-size:1.12rem;margin-bottom:.4rem;line-height:1.25}
.proj__org{color:var(--rf);font-size:.84rem;margin-bottom:.7rem}
.proj__desc{color:var(--muted);font-size:.9rem;margin-bottom:1rem}
.proj__pi{font-family:var(--font-m);font-size:.74rem;color:var(--soft);margin:auto 0 0;padding-top:.9rem;border-top:1px solid var(--line)}

/* ============================ ABOUT / PROSE ============================== */
.lead-block{max-width:760px}
.lead-block p{font-size:1.12rem;color:var(--soft)}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:1rem}
@media (max-width:820px){.pillars{grid-template-columns:1fr}}
.pillar{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem}
.pillar__n{font-family:var(--font-m);font-size:.8rem;color:var(--rf)}
.pillar h3{font-size:1.15rem;margin:.6rem 0 .5rem}
.pillar p{color:var(--muted);font-size:.92rem;margin:0}
.mission{display:grid;grid-template-columns:1.3fr 1fr;gap:2.4rem;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.6rem,4vw,3rem)}
@media (max-width:820px){.mission{grid-template-columns:1fr;gap:1.4rem}}
.mission h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:1rem}
.mission p{color:var(--soft)}
.spectrum-viz{display:flex;flex-direction:column;gap:.7rem}
.spectrum-viz .band{display:flex;align-items:center;gap:.9rem}
.spectrum-viz .band b{font-family:var(--font-m);font-size:.72rem;color:var(--muted);width:74px}
.spectrum-viz .band .track{flex:1;height:8px;border-radius:999px;background:rgba(15,23,42,.08);overflow:hidden}
.spectrum-viz .band .fill{height:100%;border-radius:999px;background:var(--spectrum);width:0;transition:width 1.1s var(--ease)}
.reveal.is-in .spectrum-viz .band .fill{width:var(--w,70%)}

/* ============================ CTA / CONTACT ============================== */
.cta{position:relative;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(2.4rem,6vw,4rem);text-align:center;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:var(--spectrum-soft);opacity:.5}
.cta > *{position:relative}
.cta h2{font-size:clamp(1.7rem,4vw,2.6rem)}
.cta p{color:var(--soft);max-width:52ch;margin:1rem auto 1.8rem}
.cta__actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr}}
.contact-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:2rem}
.contact-card h3{font-size:1.2rem;margin-bottom:1.2rem}
.contact-row{display:flex;gap:1rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.contact-row:last-child{border-bottom:0}
.contact-row .k{font-family:var(--font-m);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--rf);width:88px;flex:0 0 88px;padding-top:.2rem}
.contact-row .v{color:var(--soft)}
.contact-row .v a:hover{color:var(--rf)}
.map{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:340px}
.map iframe{width:100%;height:100%;min-height:340px;border:0;filter:grayscale(.3) invert(.9) hue-rotate(180deg) contrast(.9)}

/* ============================ FOOTER ==================================== */
.foot{background:var(--surface);border-top:1px solid var(--line);margin-top:2rem}
.foot__grid{display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:2rem;padding-block:clamp(2.4rem,5vw,3.4rem)}
@media (max-width:820px){.foot__grid{grid-template-columns:1fr;gap:1.6rem}}
.brand--foot{margin-bottom:1rem}
.foot__brand p{color:var(--muted);font-size:.9rem;margin:.3rem 0}
.foot__inst{font-size:.84rem !important;color:var(--soft) !important}
.foot__col h4{font-family:var(--font-m);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:1rem}
.foot__col a{display:block;color:var(--soft);font-size:.9rem;padding:.28rem 0;transition:color .2s}
.foot__col a:hover{color:var(--rf)}
.foot__addr{display:block;color:var(--muted);font-size:.86rem;margin-top:.4rem;max-width:34ch}
.foot__base{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-block:1.4rem;
  border-top:1px solid var(--line);font-family:var(--font-m);font-size:.74rem;color:var(--muted)}

/* ============================ REVEAL ANIM =============================== */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s var(--ease),transform .6s var(--ease);transition-delay:calc(var(--i,0)*60ms)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .brand__mark span,.hero__kicker::before,.hero__scroll span{animation:none}
}

/* page intro band shared by inner pages */
.pagehead{position:relative;padding:clamp(4.5rem,10vw,7rem) 0 clamp(2.5rem,5vw,3.5rem);border-bottom:1px solid var(--line);overflow:hidden}
.pagehead::before{content:"";position:absolute;inset:0;background:var(--spectrum-soft);opacity:.4;z-index:-1}
.pagehead h1{font-size:clamp(2.1rem,5.5vw,3.6rem);max-width:16ch}
.pagehead p{color:var(--soft);max-width:60ch;margin-top:1rem;font-size:1.08rem}

/* ============================================================================
   Hero + About redesign (matches signals/connect + "what we care about")
   ========================================================================== */

/* colored, bold lab-member names in publications & projects */
.member{color:var(--signal);font-weight:700}
.proj__pi .member{font-family:var(--font-m);font-size:.82rem}

/* signal eyebrow: teal with a leading dash */
.eyebrow--signal{color:var(--signal);display:inline-flex;align-items:center;gap:.7rem}
.eyebrow--signal::before{content:"";width:30px;height:1px;background:var(--signal);opacity:.85}
.hero .eyebrow--signal{margin-bottom:1.4rem}

/* hero headline rainbow word + solid-teal primary button (as in the mock) */
.hero h1 .grad{background:linear-gradient(90deg,#7c3aed 0%,#4f46e5 22%,#0891b2 48%,#0d9488 68%,#16a34a 84%,#d97706 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero .btn--primary{background:var(--signal);color:#ffffff;box-shadow:0 10px 30px -12px rgba(13,148,136,.5)}
.hero .btn--primary:hover{box-shadow:0 16px 44px -12px rgba(45,212,191,.8)}

/* spectrum band under the hero CTA */
.spectrum-band{margin-top:clamp(2.4rem,6vw,3.6rem);max-width:760px}
.spectrum-band__bar{display:block;height:5px;border-radius:999px;
  background:linear-gradient(90deg,#7c3aed,#4f46e5 22%,#0891b2 48%,#0d9488 68%,#16a34a 84%,#d97706 100%)}
.spectrum-band__ticks{display:flex;justify-content:space-between;margin-top:.7rem;
  font-family:var(--font-m);font-size:.68rem;letter-spacing:.06em;color:var(--muted)}
@media (max-width:560px){.spectrum-band__ticks span:nth-child(2),.spectrum-band__ticks span:nth-child(3){display:none}}

/* about: two-column intro + "what we care about" card */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(2rem,5vw,4rem);align-items:start}
@media (max-width:900px){.about-grid{grid-template-columns:1fr}}
.about-grid__intro h2{font-size:clamp(1.9rem,4.4vw,3rem);margin-bottom:1.4rem}
.about-grid__intro p{color:var(--muted);margin-bottom:1.1rem}
.about-grid__intro strong{color:var(--mist);font-weight:600}
.care-card{position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:2rem 1.9rem;overflow:hidden}
.care-card::before{content:"";position:absolute;left:0;top:0;right:0;height:2px;
  background:linear-gradient(90deg,#7c3aed,#0891b2 45%,#0d9488 70%,#d97706)}
.care-card h3{font-size:1.25rem;margin-bottom:.4rem}
.care-card__sub{color:var(--muted);font-size:.92rem;margin-bottom:1.4rem}
.care-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:1.05rem}
.care-list li{display:flex;gap:.85rem;align-items:flex-start;color:var(--muted);font-size:.95rem;line-height:1.5}
.care-list strong{color:var(--mist);font-weight:600}
.care-dot{flex:0 0 8px;width:8px;height:8px;margin-top:.5rem;border-radius:50%;
  background:var(--signal);box-shadow:0 0 8px rgba(13,148,136,.45)}

/* ============================================================================
   Team placeholders (RA / collaborators) + pagination
   ========================================================================== */
.teamgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
@media (max-width:900px){.teamgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.teamgrid{grid-template-columns:1fr}}
.tcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:18px;overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.tcard:hover{transform:translateY(-4px);border-color:var(--signal);box-shadow:0 20px 44px -24px rgba(15,23,42,.4)}
.tcard__photo{aspect-ratio:1/1;background:var(--surface-2);overflow:hidden}
.tcard__photo img{width:100%;height:100%;object-fit:cover;display:block}
.tcard__ph{width:100%;height:100%;display:grid;place-items:center;font-family:var(--font-d);
  font-size:2.8rem;color:var(--signal);background:var(--spectrum-soft)}
.tcard__body{padding:1.3rem 1.4rem 1.5rem;display:flex;flex-direction:column}
.tcard__name{font-size:1.14rem;color:var(--mist);margin:0 0 .2rem}
.tcard__role{font-family:var(--font-m);font-size:.76rem;color:var(--rf);letter-spacing:.02em;margin:0 0 .3rem}
.tcard__dept{font-size:.82rem;color:var(--muted);margin:0}
.tcard__sup{font-family:var(--font-m);font-size:.58rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);margin:.5rem 0 0}
.tcard__area{font-size:.85rem;color:var(--soft);margin:.6rem 0 0;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tcard__icons{display:flex;flex-wrap:wrap;gap:.5rem;margin:1rem 0 .1rem}
.tcard__ico{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--c,var(--signal));
  color:#fff;font-family:var(--font-m);font-size:.6rem;font-weight:700;text-decoration:none;transition:transform .2s}
.tcard__ico:hover{transform:translateY(-2px)}
.tcard__btn{margin-top:1.1rem;display:inline-flex;align-items:center;justify-content:center;gap:.4rem;
  padding:.72rem 1rem;border-radius:11px;background:var(--rf);color:#fff;font-family:var(--font-d);
  font-size:.9rem;text-decoration:none;transition:filter .2s}
.tcard__btn:hover{filter:brightness(1.1)}
.tcard__btn--soft{background:var(--surface-2);color:var(--mist);border:1px solid var(--line-2)}

/* pagination */
.pagination{display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center;align-items:center;
  margin-top:2.4rem}
.pagination:empty{display:none}
.pagebtn{min-width:38px;height:38px;padding:0 .6rem;border-radius:10px;cursor:pointer;
  font-family:var(--font-m);font-size:.85rem;color:var(--soft);
  background:var(--surface);border:1px solid var(--line-2);transition:all .2s var(--ease)}
.pagebtn:hover:not(:disabled):not(.is-active){color:var(--mist);border-color:var(--rf)}
.pagebtn.is-active{background:var(--signal);border-color:var(--signal);color:#ffffff;font-weight:700}
.pagebtn:disabled{opacity:.35;cursor:not-allowed}
.pagegap{color:var(--muted);padding:0 .3rem;font-family:var(--font-m)}

/* home About: keep the "what we care about" card on the right, trim the
   empty space below the section */
#about{padding-block:clamp(40px,5.5vw,76px) clamp(16px,2vw,28px)}
#about .about-grid{align-items:center}
#about .care-card{margin-left:auto;width:100%}

/* light-theme depth: keep white cards legible on white */
.rcard,.person,.dossier,.proj,.pillar,.cta,.contact-card,.care-card,.tcard,.pubsearch,.stat,.dossier__stats{box-shadow:0 1px 2px rgba(15,23,42,.04),0 2px 6px rgba(15,23,42,.05)}

.pagehead__grid{display:grid;grid-template-columns:1fr;gap:2rem;align-items:center}
@media (min-width:920px){ .pagehead__grid{grid-template-columns:1.05fr .95fr} }
.pubstats{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem}
.pubstats__cell{background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:1rem .7rem;text-align:center}
.pubstats__cell b{display:block;font-family:var(--font-d);font-size:1.7rem;line-height:1;margin-bottom:.35rem;background:var(--spectrum);-webkit-background-clip:text;background-clip:text;color:transparent}
.pubstats__cell span{font-family:var(--font-m);font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
@media (max-width:420px){ .pubstats{grid-template-columns:repeat(2,1fr)} }
.contact-emails{display:flex;flex-direction:column;gap:.3rem}
.brand__logo{width:30px;height:30px;display:block;flex:0 0 auto}
.brand--foot .brand__logo{width:32px;height:32px}
.pagehead h1{white-space:nowrap}

body[data-page="people"] .pagehead h1{max-width:none;font-size:clamp(1.7rem,4.6vw,3rem)}
@media (min-width:760px){ body[data-page="people"] .pagehead h1{white-space:nowrap} }
.brand__logo{width:34px;height:34px;border-radius:9px;object-fit:cover;display:block;flex:0 0 auto;box-shadow:0 1px 3px rgba(15,23,42,.18)}
.brand--foot .brand__logo{width:36px;height:36px}

.brand{gap:.8rem}
.brand__logo{width:44px;height:44px;border-radius:11px;object-fit:cover;display:block;flex:0 0 auto;box-shadow:0 1px 4px rgba(15,23,42,.2)}
.brand--foot .brand__logo{width:44px;height:44px}
.teamcat{margin-bottom:2.6rem}
.teamcat:last-child{margin-bottom:0}
.teamcat__title{font-family:var(--font-m);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--rf);margin:0 0 1.2rem;padding-bottom:.55rem;border-bottom:1px solid var(--line)}

/* ============================================================================
   PERSONAL-SITE ADDITIONS
   ========================================================================== */
.pagehead h1{white-space:normal}
.muted{color:var(--muted)}

/* hero: text + profile card */
.hero--profile{min-height:min(88vh,760px)}
.hero__grid{display:grid;grid-template-columns:1.35fr .65fr;gap:clamp(2rem,5vw,4rem);align-items:center}
@media (max-width:900px){.hero__grid{grid-template-columns:1fr}}
.hero--profile h1{max-width:18ch;font-size:clamp(2.1rem,5vw,3.7rem)}
.hero__name{font-family:var(--font-d);font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--mist);font-weight:600;margin:0 0 .9rem;letter-spacing:-.01em}
.hero__name span{color:var(--muted);font-weight:500}

.pcard{background:rgba(255,255,255,.86);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border:1px solid var(--line);border-radius:20px;padding:1rem;box-shadow:0 20px 50px -24px rgba(15,23,42,.35)}
@media (max-width:900px){.pcard{display:grid;grid-template-columns:140px 1fr;gap:1.2rem;align-items:center;max-width:560px}}
@media (max-width:460px){.pcard{grid-template-columns:96px 1fr;gap:.9rem}}
.pcard__photo{position:relative;aspect-ratio:4/5;border-radius:14px;overflow:hidden;background:var(--surface-3)}
.pcard__photo img{width:100%;height:100%;object-fit:cover;object-position:50% 20%}
.pcard__body{padding:1rem .3rem .3rem;display:flex;flex-direction:column}
@media (max-width:900px){.pcard__body{padding:0}}
.pcard__name{font-family:var(--font-d);color:var(--mist);font-size:1.08rem;font-weight:600}
.pcard__role{font-size:.84rem;color:var(--muted)}
.pcard .dossier__meta{margin:.8rem 0 .6rem}
.pcard__mail{font-family:var(--font-m);font-size:.76rem;color:var(--rf);word-break:break-all}
.pcard__mail:hover{text-decoration:underline}
.pcard .tcard__icons{margin-top:.8rem;gap:.4rem}
.pcard .tcard__ico{width:30px;height:30px;font-size:.7rem}
@media (max-width:460px){.pcard .dossier__meta{gap:1rem}.pcard .tcard__icons{display:none}}

/* about block: bio + interests */
.about2{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(2rem,4vw,3.4rem);align-items:start}
@media (max-width:900px){.about2{grid-template-columns:1fr}}
.about2__bio p{font-size:1.02rem}
.about2 .tick{grid-template-columns:1fr}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.4rem,3vw,2rem);
  box-shadow:0 1px 2px rgba(15,23,42,.04),0 2px 6px rgba(15,23,42,.05)}
.panel h3{font-size:1.1rem;margin-bottom:1rem}

/* lab affiliation */
.labcard{display:grid;grid-template-columns:auto 1fr auto;gap:1.4rem;align-items:center;padding:clamp(1.4rem,3vw,2rem);
  border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);position:relative;overflow:hidden}
.labcard::before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--spectrum)}
.labcard__tag{font-family:var(--font-d);font-weight:700;font-size:1.3rem;letter-spacing:.02em;padding:.7rem .9rem;border-radius:12px;
  background:var(--spectrum-soft);color:var(--mm)}
.labcard h3{font-size:1.12rem;margin-bottom:.3rem}
.labcard p{margin:0;color:var(--muted);font-size:.92rem}
@media (max-width:720px){.labcard{grid-template-columns:1fr;gap:.9rem}.labcard__tag{justify-self:start}}

/* timelines on the experience page */
.timeline li{grid-template-columns:118px 1fr}
@media (max-width:560px){.timeline li{grid-template-columns:1fr;gap:.15rem}}
.timeline__note{display:block;font-size:.84rem;color:var(--soft);margin-top:.15rem}
.cvgrid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.4rem,3vw,2.4rem);align-items:start}
@media (max-width:900px){.cvgrid{grid-template-columns:1fr}}

/* teaching cards */
.teachgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.2rem}
@media (max-width:820px){.teachgrid{grid-template-columns:1fr}}
.teach{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem 1.5rem;
  box-shadow:0 1px 2px rgba(15,23,42,.04),0 2px 6px rgba(15,23,42,.05)}
.teach__head{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;flex-wrap:wrap}
.teach h3{font-size:1.02rem}
.teach__role{font-size:.86rem;color:var(--muted);margin:.25rem 0 .7rem}
.teach__list{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:.4rem}
.teach__list li{font-size:.8rem;padding:.28rem .62rem;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);color:var(--soft)}

/* publications */
.pub__badge--standard{background:rgba(217,119,6,.10);color:#b45309;border-color:rgba(217,119,6,.25)}
.pubstats{grid-template-columns:repeat(4,1fr)}
@media (max-width:560px){.pubstats{grid-template-columns:repeat(2,1fr)}}
.pubcount{font-family:var(--font-m);font-size:.74rem;color:var(--muted);margin:0 0 1rem;letter-spacing:.04em}

/* contact */
.lrows{display:flex;flex-direction:column}
.lrow{display:flex;align-items:center;gap:.9rem;padding:.7rem 0;border-bottom:1px solid var(--line);color:var(--soft);font-size:.95rem}
.lrow:last-child{border-bottom:0}
.lrow .tcard__ico{width:30px;height:30px;font-size:.7rem;flex:0 0 auto}
.lrow i{margin-left:auto;font-style:normal;color:var(--muted)}
.lrow:hover span:not(.tcard__ico){color:var(--rf)}

/* footer icons */
.foot__icons{display:flex;gap:.4rem;flex-wrap:wrap}
.foot__icons .tcard__ico{width:28px;height:28px;font-size:.66rem}
.hero__kicker{background:rgba(255,255,255,.75);color:var(--signal);border-color:rgba(15,118,110,.25)}
.hero__kicker::before{background:var(--signal);box-shadow:0 0 10px var(--signal)}
.contact-row .v{min-width:0;overflow-wrap:anywhere}
@media (max-width:460px){.contact-row .k{width:64px;flex-basis:64px}}
.teachgrid{align-items:start}
.pgrid--3{grid-template-columns:repeat(3,1fr)}
@media (max-width:960px){.pgrid--3{grid-template-columns:1fr}}
.pgrid--3 .proj__fig{aspect-ratio:auto;height:96px}
.proj__fig--ph{display:flex;align-items:center;justify-content:center;gap:.6rem}
.proj__fig--ph svg{width:22px;height:22px;color:var(--mm)}
.pgrid--3 .proj{margin:0;max-width:none}

/* projects page */
.proj__pad{display:flex;flex-direction:column;height:100%}
.pgrid--3 .proj{display:flex;flex-direction:column}
.proj__status{font-family:var(--font-m);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;padding:.22rem .55rem;border-radius:999px;border:1px solid}
.proj__status--ongoing{color:#047857;background:rgba(16,185,129,.10);border-color:rgba(16,185,129,.35)}
.proj__status--completed{color:var(--mm);background:rgba(79,70,229,.08);border-color:rgba(79,70,229,.28)}
.proj__status--planned{color:#b45309;background:rgba(217,119,6,.10);border-color:rgba(217,119,6,.3)}
.proj__meta{font-size:.84rem;color:var(--soft);margin:0 0 .5rem}
.proj__meta b{font-family:var(--font-m);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:500;margin-right:.4rem}
.proj__links{display:flex;gap:1rem;flex-wrap:wrap;margin-top:auto;padding-top:1rem}
.proj__links a{font-size:.86rem;font-weight:500;color:var(--rf)}
.proj__links a:hover{text-decoration:underline}
.pgrid--3 .proj__fig img{width:100%;height:100%;object-fit:cover;max-height:none}
.fbtn__n{opacity:.6;margin-left:.2rem}

/* Google Scholar metrics on the profile card */
.pcard__metrics{display:grid;grid-template-columns:repeat(3,auto);justify-content:start;gap:.2rem 1.2rem;margin:.1rem 0 .3rem;padding:.7rem 0 0;border-top:1px solid var(--line)}
.pcard__metrics div{display:flex;flex-direction:column}
.pcard__metrics dt{font-family:var(--font-m);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.pcard__metrics dd{margin:0;font-family:var(--font-d);font-weight:600;font-size:1.12rem;color:var(--mist)}
.pcard__src{display:inline-block;font-family:var(--font-m);font-size:.66rem;color:var(--muted);margin-bottom:.7rem}
.pcard__src:hover{color:var(--rf)}

/* compact page headers (title only) */
.pagehead{padding:clamp(3.2rem,7vw,4.6rem) 0 clamp(2rem,4vw,2.6rem)}
.pagehead h1{max-width:none}

/* publications header: 3-column stat grid, citations spans the bottom row */
.pagehead h2{font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:600}
.pubstats{grid-template-columns:repeat(3,1fr);gap:.8rem}
.pubstats__cell{padding:1.15rem .7rem}
.pubstats__cell--wide{grid-column:span 2}
@media (max-width:560px){.pubstats{grid-template-columns:repeat(2,1fr)}}