/* ============================================================
   Dr. Madhu Anand — Personal Website
   Concept: "Trace" — analytical-chemistry visual language
   style.css  ·  design tokens, base, layout, components
   (breakpoints live in responsive.css)
   ============================================================ */

/* ---------- Design tokens : LIGHT (default) ---------- */
:root{
  --bg:#ECEFEA;
  --panel:#F5F7F2;
  --panel-2:#FBFCF9;
  --ink:#14231F;
  --muted:#5C6B64;
  --line:#D4DBD3;
  --accent:#AC6338;          /* burnished copper */
  --accent-text:#8F4E2A;     /* darker copper for small text on light */
  --accent-soft:rgba(172,99,56,.10);
  --on-accent:#FCFBF7;

  /* Committed dark bands (header · hero · banners · footer) */
  --dark:#0B1F1B;
  --dark-2:#0E2A23;
  --dark-ink:#EEF1EA;
  --dark-muted:#9DB1A7;
  --dark-line:rgba(214,147,95,.26);
  --dark-hair:rgba(255,255,255,.10);
  --dark-accent:#D6935F;

  /* logo jewel echo (from the MA gradient dot) */
  --jewel:linear-gradient(135deg,#8a4fd6,#e0568f 45%,#e8935a);

  --maxw:1200px;
  --pad:clamp(1.25rem,5vw,4rem);
  --sec:clamp(4rem,9vw,7rem);
  --hdr-h:74px;
  --radius:4px;

  --serif:"Fraunces","Constantia","Palatino Linotype",Georgia,serif;
  --sans:"Manrope","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono","Consolas","SFMono-Regular",ui-monospace,monospace;

  --shadow:0 18px 50px -24px rgba(11,31,27,.45);
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0C1714; --panel:#12211D; --panel-2:#16271F; --ink:#E9EDE7; --muted:#9AAAA2;
    --line:#24332E; --accent:#D6935F; --accent-text:#E1A876;
    --accent-soft:rgba(214,147,95,.12); --on-accent:#0B1F1B;
    --shadow:0 18px 50px -24px rgba(0,0,0,.6);
  }
}
:root[data-theme="light"]{
  --bg:#ECEFEA; --panel:#F5F7F2; --panel-2:#FBFCF9; --ink:#14231F; --muted:#5C6B64;
  --line:#D4DBD3; --accent:#AC6338; --accent-text:#8F4E2A;
  --accent-soft:rgba(172,99,56,.10); --on-accent:#FCFBF7;
  --shadow:0 18px 50px -24px rgba(11,31,27,.45);
}
:root[data-theme="dark"]{
  --bg:#0C1714; --panel:#12211D; --panel-2:#16271F; --ink:#E9EDE7; --muted:#9AAAA2;
  --line:#24332E; --accent:#D6935F; --accent-text:#E1A876;
  --accent-soft:rgba(214,147,95,.12); --on-accent:#0B1F1B;
  --shadow:0 18px 50px -24px rgba(0,0,0,.6);
}

/* ---------- Reset / base ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--sans); font-size:1.0625rem; line-height:1.7; font-weight:400;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; overflow-x:hidden;
}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif); font-weight:500; margin:0; text-wrap:balance; letter-spacing:-.01em}
p{margin:0}
:where(a,button,input,textarea,select):focus-visible{outline:2px solid var(--accent); outline-offset:3px; border-radius:3px}
::selection{background:var(--accent); color:var(--on-accent)}

.wrap{max-width:var(--maxw); margin-inline:auto; padding-inline:var(--pad)}
.skip{position:absolute; left:-999px; top:0; background:var(--accent); color:var(--on-accent);
  padding:.6rem 1rem; z-index:100; border-radius:0 0 6px 0}
.skip:focus{left:0}

/* ---------- Shared type helpers ---------- */
.eyebrow{
  font-family:var(--mono); font-size:.7rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--accent-text); margin:0 0 1.1rem; display:inline-flex; align-items:center; gap:.6rem;
}
.eyebrow::before{content:""; width:1.6rem; height:1px; background:var(--accent)}
.sec-title{font-size:clamp(1.7rem,3.4vw,2.7rem); line-height:1.12}
.lead{max-width:62ch; color:var(--muted)}
.center{text-align:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.55rem; cursor:pointer;
  font-family:var(--sans); font-size:.92rem; font-weight:600; letter-spacing:.01em;
  padding:.85rem 1.5rem; border-radius:var(--radius); border:1px solid transparent;
  transition:transform .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn .ar{transition:transform .25s ease}
.btn:hover .ar{transform:translateX(3px)}
.btn-primary{background:var(--accent); color:var(--on-accent); border-color:var(--accent)}
.btn-primary:hover{background:transparent; color:var(--accent-text)}
.btn-ghost{background:transparent; color:var(--ink); border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent-text)}
.link-more{
  font-family:var(--mono); font-size:.78rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--accent-text); display:inline-flex; gap:.5rem; align-items:center;
  border-bottom:1px solid transparent; padding-bottom:2px; transition:.25s;
}
.link-more:hover{border-color:var(--accent); gap:.75rem}

/* ============ HEADER (static / fixed / premium) ============ */
.siteheader{
  position:fixed; inset:0 0 auto 0; z-index:50;
  border-bottom:1px solid transparent;
  transition:background .35s ease, box-shadow .35s ease, border-color .35s ease, backdrop-filter .35s ease;
}
.siteheader.solid{
  background:color-mix(in srgb, var(--dark) 84%, transparent);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid var(--dark-line);
}
.header-inner{
  max-width:var(--maxw); margin-inline:auto; padding:.7rem var(--pad); min-height:var(--hdr-h);
  display:flex; align-items:center; justify-content:space-between; gap:1.5rem;
}
.brand{display:inline-flex; align-items:center; gap:.7rem;
  background:none; border:0; padding:0; margin:0; font:inherit; color:inherit; cursor:zoom-in}
.logo-img{height:50px; width:auto}
.header-right{display:flex; align-items:center; gap:1.25rem}
.theme-btn{background:none; border:0; padding:0; cursor:pointer; color:var(--dark-ink); opacity:.82;
  width:40px; height:40px; border-radius:50%; display:grid; place-items:center; flex:none;
  transition:opacity .2s, color .2s, background .2s}
.theme-btn:hover{opacity:1; color:var(--dark-accent); background:rgba(255,255,255,.06)}
.theme-btn svg{width:20px; height:20px}
.theme-btn .ic-sun{display:none}
.theme-btn .ic-moon{display:block}
:root[data-theme="dark"] .theme-btn .ic-sun{display:block}
:root[data-theme="dark"] .theme-btn .ic-moon{display:none}
.nav{display:flex; align-items:center; gap:2rem}
.nav a.navlink{
  color:var(--dark-ink); font-size:.9rem; font-weight:500; opacity:.82;
  position:relative; padding:.2rem 0; transition:opacity .2s;
}
.nav a.navlink::after{content:""; position:absolute; left:0; bottom:-3px; height:1px; width:0;
  background:var(--dark-accent); transition:width .25s ease}
.nav a.navlink:hover{opacity:1}
.nav a.navlink:hover::after,.nav a.navlink[aria-current="page"]::after{width:100%}
.nav a.navlink[aria-current="page"]{opacity:1; color:var(--dark-accent)}
.nav .btn-outline{background:transparent; color:var(--dark-ink); border-color:var(--dark-line);
  padding:.6rem 1.15rem; font-size:.82rem; margin-left:.4rem}
.nav .btn-outline:hover{border-color:var(--dark-accent); color:var(--dark-accent); transform:translateY(-2px)}
.menu-btn{display:none; background:none; border:0; cursor:pointer; padding:.5rem; z-index:60}
.menu-btn span{display:block; width:24px; height:2px; background:var(--dark-ink); margin:5px 0;
  transition:transform .3s ease, opacity .3s ease}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-scrim{position:fixed; inset:0; background:rgba(6,15,13,.55); opacity:0; visibility:hidden;
  transition:.3s; z-index:40}
.nav-scrim.show{opacity:1; visibility:visible}

/* ============ HERO (home) ============ */
.hero{
  position:relative; min-height:100svh; display:flex; align-items:center;
  background:radial-gradient(120% 90% at 78% 10%,var(--dark-2),var(--dark) 62%);
  color:var(--dark-ink); overflow:hidden; isolation:isolate;
}
.hero::before{
  content:""; position:absolute; inset:0; z-index:0; opacity:.5; pointer-events:none;
  background-image:linear-gradient(var(--dark-hair) 1px,transparent 1px);
  background-size:100% 25%;
  -webkit-mask-image:linear-gradient(transparent,#000 40%,transparent);
          mask-image:linear-gradient(transparent,#000 40%,transparent);
}
.hero-trace{position:absolute; left:0; right:0; bottom:0; height:46%; z-index:0; pointer-events:none}
.hero-trace svg{width:100%; height:100%; display:block}
.trace-line{fill:none; stroke:var(--dark-accent); stroke-width:2; opacity:.85}
.trace-glow{fill:none; stroke:var(--dark-accent); stroke-width:7; opacity:.14; filter:blur(2px)}
.hero .wrap{position:relative; z-index:2; padding-top:calc(var(--hdr-h) + 3.5rem); padding-bottom:5rem; width:100%}
.hero .eyebrow{color:var(--dark-accent)}
.hero .eyebrow::before{background:var(--dark-accent)}
.hero h1{
  font-family:var(--serif); font-weight:500; font-size:clamp(2.5rem,6.2vw,5rem);
  line-height:1.03; letter-spacing:-.02em; max-width:17ch; margin:.4rem 0 1.4rem;
}
.hero h1 em{font-style:italic; color:var(--dark-accent)}
.hero-lead{max-width:56ch; color:var(--dark-muted); font-size:clamp(1rem,1.5vw,1.18rem)}
.hero-cta{display:flex; flex-wrap:wrap; gap:1rem; margin-top:2.2rem}
.hero-cta .btn-ghost{color:var(--dark-ink); border-color:var(--dark-line)}
.hero-cta .btn-ghost:hover{border-color:var(--dark-accent); color:var(--dark-accent)}
.hero-place{
  margin-top:2rem; font-family:var(--mono); font-size:.72rem; letter-spacing:.13em;
  text-transform:uppercase; color:var(--dark-muted); display:flex; align-items:center; gap:.6rem;
}
.pulse{width:8px; height:8px; border-radius:50%; background:var(--jewel);
  box-shadow:0 0 0 0 rgba(224,86,143,.5); animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(224,86,143,.5)}70%{box-shadow:0 0 0 9px rgba(224,86,143,0)}100%{box-shadow:0 0 0 0 rgba(224,86,143,0)}}

/* ============ PAGE BANNER (inner pages) ============ */
.pagehead{
  position:relative; color:var(--dark-ink); overflow:hidden; isolation:isolate;
  background:radial-gradient(120% 130% at 82% 0%,var(--dark-2),var(--dark) 60%);
  padding-top:calc(var(--hdr-h) + clamp(3rem,7vw,5.5rem));
  padding-bottom:clamp(3rem,7vw,5rem);
}
.pagehead::before{
  content:""; position:absolute; inset:0; z-index:0; opacity:.4; pointer-events:none;
  background-image:linear-gradient(var(--dark-hair) 1px,transparent 1px);
  background-size:100% 33%; -webkit-mask-image:linear-gradient(#000,transparent); mask-image:linear-gradient(#000,transparent);
}
.pagehead .wrap{position:relative; z-index:2}
.pagehead .eyebrow{color:var(--dark-accent)}
.pagehead .eyebrow::before{background:var(--dark-accent)}
.pagehead h1{font-family:var(--serif); font-weight:500; font-size:clamp(2.3rem,5.2vw,3.8rem);
  line-height:1.05; letter-spacing:-.02em; max-width:20ch}
.pagehead h1 em{font-style:italic; color:var(--dark-accent)}
.pagehead .sub{max-width:58ch; color:var(--dark-muted); margin-top:1.1rem; font-size:1.08rem}
.crumb{display:flex; gap:.5rem; align-items:center; font-family:var(--mono); font-size:.72rem;
  letter-spacing:.1em; text-transform:uppercase; color:var(--dark-muted); margin-top:1.8rem}
.crumb a:hover{color:var(--dark-accent)}
.crumb .sep{opacity:.5}
.banner-trace{position:absolute; left:0; right:0; bottom:0; height:60%; z-index:0; opacity:.5; pointer-events:none}
.banner-trace svg{width:100%; height:100%}

/* ============ SECTIONS ============ */
.section{padding-block:var(--sec)}
.section.panel{background:var(--panel); border-block:1px solid var(--line)}
.sec-head{margin-bottom:3rem; max-width:70ch}
.sec-head.split{display:flex; justify-content:space-between; align-items:end; gap:2rem; flex-wrap:wrap; max-width:none}
.sec-head .lead{margin-top:.8rem}

/* ---- Stat band ---- */
.stats{background:var(--dark); border-top:1px solid var(--dark-line)}
.stats .wrap{display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--dark-line); padding-inline:0}
.stat{background:var(--dark); padding:2.4rem clamp(1rem,3vw,2rem); text-align:center}
.stat .num{font-family:var(--serif); font-size:clamp(2rem,3.4vw,2.9rem); color:var(--dark-ink);
  font-variant-numeric:tabular-nums; line-height:1}
.stat .num sup{font-size:.5em; color:var(--dark-accent); font-family:var(--sans)}
.stat .lbl{font-family:var(--mono); font-size:.66rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--dark-muted); margin-top:.6rem}

/* ---- About / two-column ---- */
.grid-about{display:grid; grid-template-columns:.85fr 1.15fr; gap:clamp(2rem,6vw,5rem); align-items:center}
.portrait{
  position:relative; aspect-ratio:4/5; border:1px solid var(--line); border-radius:var(--radius);
  background:radial-gradient(140% 120% at 30% 12%,var(--accent-soft),transparent 55%),var(--panel);
  display:grid; place-items:center; overflow:hidden;
}
.portrait img{width:100%; height:100%; object-fit:cover}
.portrait .ph-mark{width:44%; aspect-ratio:1; border-radius:50%; border:1px solid var(--accent);
  display:grid; place-items:center; font-family:var(--serif); font-size:clamp(2rem,4vw,3.2rem); color:var(--accent-text)}
.portrait .cap{position:absolute; bottom:.9rem; left:0; right:0; text-align:center;
  font-family:var(--mono); font-size:.62rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted)}
.chips{display:flex; flex-wrap:wrap; gap:.6rem; margin:1.6rem 0 1.8rem}
.chip{font-family:var(--mono); font-size:.72rem; letter-spacing:.04em; padding:.45rem .8rem;
  border:1px solid var(--line); border-radius:100px; color:var(--muted); background:var(--panel)}
.chip b{color:var(--accent-text); font-weight:600}
.prose p+p{margin-top:1rem}

/* ---- Cards (focus areas) ---- */
.cards{display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line);
  border:1px solid var(--line); border-radius:var(--radius); overflow:hidden}
.card{background:var(--bg); padding:2rem 1.6rem; display:flex; flex-direction:column; gap:1rem; transition:background .3s ease}
.card:hover{background:var(--panel)}
.card .ic{width:34px; height:34px; color:var(--accent)}
.card .no{font-family:var(--mono); font-size:.66rem; letter-spacing:.14em; color:var(--muted); opacity:.75}
.card h3{font-size:1.16rem; line-height:1.25; margin-top:.15rem}
.card p{font-size:.92rem; color:var(--muted); line-height:1.6}

/* ---- Feature grid (research themes) ---- */
.feature-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:1.4rem}
.feature{border:1px solid var(--line); border-radius:var(--radius); padding:1.8rem; background:var(--panel-2);
  display:flex; flex-direction:column; gap:.7rem; transition:transform .3s ease, box-shadow .3s ease, border-color .3s}
.feature:hover{transform:translateY(-4px); box-shadow:var(--shadow); border-color:var(--accent)}
.feature .ic{width:30px; height:30px; color:var(--accent)}
.feature h3{font-size:1.2rem}
.feature p{color:var(--muted); font-size:.94rem}

/* ---- Tag / pill lists ---- */
.pill-row{display:flex; flex-wrap:wrap; gap:.65rem}
.pill{font-family:var(--sans); font-size:.9rem; padding:.55rem 1rem; border-radius:100px;
  border:1px solid var(--line); background:var(--panel); color:var(--ink); transition:.25s}
.pill:hover{border-color:var(--accent); color:var(--accent-text)}
.pill .u{font-family:var(--mono); font-size:.72rem; color:var(--muted); margin-left:.4rem}

/* ---- Definition list (education / details) ---- */
.deflist{display:grid; gap:0; border-top:1px solid var(--line)}
.defrow{display:grid; grid-template-columns:.9fr 1.4fr auto; gap:1.5rem; align-items:baseline;
  padding:1.5rem 0; border-bottom:1px solid var(--line)}
.defrow .k{font-family:var(--serif); font-size:1.15rem}
.defrow .v{color:var(--muted); font-size:.96rem}
.defrow .yr{font-family:var(--mono); font-size:.82rem; color:var(--accent-text); white-space:nowrap; justify-self:end}

/* ---- Timeline (experience) ---- */
.timeline{position:relative; margin-top:1rem}
.tl-item{position:relative; padding:0 0 2.6rem 2.4rem; border-left:1px solid var(--line)}
.tl-item:last-child{border-left-color:transparent; padding-bottom:0}
.tl-item::before{content:""; position:absolute; left:-6px; top:.35rem; width:11px; height:11px; border-radius:50%;
  background:var(--bg); border:2px solid var(--accent)}
.tl-item.current::before{background:var(--accent); box-shadow:0 0 0 4px var(--accent-soft)}
.tl-when{font-family:var(--mono); font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; color:var(--accent-text)}
.tl-role{font-family:var(--serif); font-size:1.35rem; margin:.3rem 0 .1rem}
.tl-org{color:var(--ink); font-weight:600; font-size:.98rem}
.tl-org .place{color:var(--muted); font-weight:400}
.tl-desc{color:var(--muted); font-size:.95rem; margin-top:.6rem; max-width:65ch}

/* ---- Publications ---- */
.filter-tabs{display:flex; flex-wrap:wrap; gap:.5rem; margin-bottom:2.4rem}
.filter-tabs button{
  font-family:var(--mono); font-size:.76rem; letter-spacing:.08em; text-transform:uppercase;
  padding:.55rem 1rem; border-radius:100px; border:1px solid var(--line); background:transparent;
  color:var(--muted); cursor:pointer; transition:.25s;
}
.filter-tabs button .n{opacity:.6; margin-left:.35rem}
.filter-tabs button:hover{border-color:var(--accent); color:var(--accent-text)}
.filter-tabs button[aria-pressed="true"]{background:var(--accent); border-color:var(--accent); color:var(--on-accent)}
.filter-tabs button[aria-pressed="true"] .n{opacity:.8}
.publist{border-top:1px solid var(--line)}
.pubitem{
  display:grid; grid-template-columns:auto 1fr auto; gap:1.4rem; align-items:baseline;
  padding:1.5rem 0; border-bottom:1px solid var(--line);
}
.pubitem .yr{font-family:var(--mono); font-size:.82rem; color:var(--accent-text); font-variant-numeric:tabular-nums}
.pubitem .ti{font-family:var(--serif); font-size:1.16rem; line-height:1.32}
.pubitem .au{font-size:.86rem; color:var(--muted); margin-top:.35rem}
.pubitem .au b{color:var(--ink); font-weight:600}
.pubitem .jr{font-size:.86rem; color:var(--ink); margin-top:.2rem; font-style:italic}
.pubitem .tags{margin-top:.55rem; display:flex; gap:.5rem; flex-wrap:wrap}
.badge{font-family:var(--mono); font-size:.68rem; letter-spacing:.05em; padding:.28rem .55rem;
  border-radius:100px; border:1px solid var(--line); color:var(--muted); white-space:nowrap}
.badge.type{color:var(--accent-text); border-color:var(--accent)}
.badge.if{background:var(--accent-soft)}
.pub-hidden{display:none!important}

/* ---- Info blocks / notes ---- */
.notegrid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:1rem}
.note{border:1px solid var(--line); border-left:2px solid var(--accent); border-radius:var(--radius);
  padding:1.2rem 1.3rem; background:var(--panel-2)}
.note b{display:block; margin-bottom:.4rem; font-family:var(--serif); font-size:1.05rem; font-weight:500}
.note span{font-size:.9rem; color:var(--muted)}
.note .ic{width:26px;height:26px;color:var(--accent);margin-bottom:.6rem}

/* ---- List columns (memberships, awards) ---- */
.cols{columns:2; column-gap:3rem}
.tick{list-style:none; padding:0; margin:0}
.tick li{position:relative; padding:.7rem 0 .7rem 1.7rem; border-bottom:1px solid var(--line);
  break-inside:avoid; color:var(--ink); font-size:.98rem}
.tick li::before{content:""; position:absolute; left:0; top:1.15rem; width:8px; height:8px;
  border:1px solid var(--accent); transform:rotate(45deg)}
.tick li span{display:block; color:var(--muted); font-size:.85rem; margin-top:.2rem}

/* ============ CTA band ============ */
.cta{background:var(--dark); color:var(--dark-ink); padding-block:clamp(3.5rem,7vw,6rem);
  position:relative; overflow:hidden}
.cta::after{content:""; position:absolute; right:-10%; top:-40%; width:55%; height:180%;
  background:radial-gradient(closest-side,rgba(214,147,95,.14),transparent); pointer-events:none}
.cta .wrap{position:relative; display:flex; justify-content:space-between; align-items:center; gap:2.5rem; flex-wrap:wrap}
.cta .eyebrow{color:var(--dark-accent)}
.cta .eyebrow::before{background:var(--dark-accent)}
.cta h2{font-family:var(--serif); font-weight:500; font-size:clamp(1.7rem,3.2vw,2.5rem);
  color:var(--dark-ink); max-width:18ch; line-height:1.14}
.cta p{color:var(--dark-muted); max-width:44ch; margin-top:1rem}
.cta .btn-primary{background:var(--dark-accent); color:#0B1F1B; border-color:var(--dark-accent)}
.cta .btn-primary:hover{background:transparent; color:var(--dark-accent)}
.cta-links{display:flex; gap:1.4rem; margin-top:1.4rem; flex-wrap:wrap}
.cta-links a{font-family:var(--mono); font-size:.74rem; letter-spacing:.1em; text-transform:uppercase; color:var(--dark-muted)}
.cta-links a:hover{color:var(--dark-accent)}

/* ============ Two-column utility ============ */
.split-2{display:grid; grid-template-columns:1fr 1fr; gap:clamp(2rem,6vw,4rem); align-items:start}

/* ============ Contact ============ */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:clamp(2rem,6vw,4.5rem); align-items:start}
.field{display:flex; flex-direction:column; gap:.5rem; margin-bottom:1.3rem}
.field label{font-family:var(--mono); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--muted)}
.field input,.field textarea{
  font-family:var(--sans); font-size:1rem; color:var(--ink); background:var(--panel-2);
  border:1px solid var(--line); border-radius:var(--radius); padding:.85rem 1rem; transition:border-color .2s, background .2s;
}
.field input:focus,.field textarea:focus{border-color:var(--accent); background:var(--bg); outline:none}
.field textarea{resize:vertical; min-height:140px}
.contact-detail{border-top:1px solid var(--line); padding:1.3rem 0; display:flex; gap:1.1rem; align-items:flex-start}
.contact-detail .ic{width:24px; height:24px; color:var(--accent); flex:none; margin-top:.2rem}
.contact-detail .k{font-family:var(--mono); font-size:.7rem; letter-spacing:.12em; text-transform:uppercase; color:var(--muted)}
.contact-detail .v{font-size:1.02rem; margin-top:.2rem}
.contact-detail a.v:hover{color:var(--accent-text)}
.form-note{font-size:.82rem; color:var(--muted); margin-top:.4rem}
/* animated underline (matches the header nav) on scholarly / detail links */
.contact-detail .v a{position:relative; display:inline-block; color:inherit; transition:color .2s}
.contact-detail .v a:hover{color:var(--accent-text)}
.contact-detail .v a::after{content:""; position:absolute; left:0; bottom:-1px; height:1px; width:0;
  background:var(--accent); transition:width .25s ease}
.contact-detail .v a:hover::after{width:100%}
/* reCAPTCHA: hide the floating badge (attribution shown in text instead) */
.grecaptcha-badge{visibility:hidden !important}
.recaptcha-note{font-size:.72rem; opacity:.75; margin-top:.7rem}
.recaptcha-note a{color:var(--accent-text)}
.recaptcha-note a:hover{text-decoration:underline}

/* ============ FOOTER (static / premium) ============ */
.footer{background:var(--dark); color:var(--dark-ink); border-top:1px solid var(--dark-line)}
.footer .wrap{padding-block:clamp(3rem,6vw,4.5rem)}
.foot-grid{display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:2.5rem}
.foot-brand .logo-img{height:64px; margin-bottom:1rem}
.foot-brand p{color:var(--dark-muted); font-size:.9rem; max-width:32ch}
.foot-col h4{font-family:var(--mono); font-size:.68rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--dark-accent); margin:0 0 1.1rem; font-weight:500}
.foot-col p{display:block; color:var(--dark-muted); font-size:.9rem; margin-bottom:.65rem}
.foot-col a{position:relative; display:block; width:fit-content; color:var(--dark-muted);
  font-size:.9rem; margin-bottom:.65rem; transition:color .2s}
.foot-col a::after{content:""; position:absolute; left:0; bottom:-1px; height:1px; width:0;
  background:var(--dark-accent); transition:width .25s ease}
.foot-col a:hover{color:var(--dark-ink)}
.foot-col a:hover::after{width:100%}
.foot-bottom{border-top:1px solid var(--dark-line); margin-top:3rem; padding-top:1.6rem;
  display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap;
  font-family:var(--mono); font-size:.72rem; letter-spacing:.05em; color:var(--dark-muted)}

/* ============ Back-to-top button ============ */
.to-top{position:fixed; right:1.25rem; bottom:1.25rem; z-index:60; width:48px; height:48px; border-radius:50%;
  border:1px solid var(--accent); background:var(--accent); color:var(--on-accent); cursor:pointer;
  display:grid; place-items:center; box-shadow:var(--shadow);
  opacity:0; transform:translateY(16px) scale(.9); pointer-events:none;
  transition:opacity .3s ease, transform .3s ease, background .2s ease, color .2s ease}
.to-top.show{opacity:1; transform:none; pointer-events:auto}
.to-top:hover{transform:translateY(-3px); background:transparent; color:var(--accent-text); border-color:var(--accent)}
.to-top svg{width:22px; height:22px}
.to-top:hover svg{animation:bob .7s ease infinite}
@keyframes bob{0%,100%{transform:translateY(0)} 50%{transform:translateY(-3px)}}

/* ============ Logo modal (lightbox) ============ */
.logo-modal{position:fixed; inset:0; z-index:200; display:flex; align-items:center; justify-content:center;
  padding:2rem; background:rgba(6,15,13,.94); backdrop-filter:blur(6px);
  opacity:0; pointer-events:none; transition:opacity .25s ease}
.logo-modal[hidden]{display:none}   /* critical: keep the overlay out of the way when closed */
.logo-modal.open{opacity:1; pointer-events:auto}
.logo-modal-img{max-width:min(460px,86vw); max-height:78vh; width:auto; height:auto;
  animation:logopop .4s cubic-bezier(.16,1,.3,1)}
@keyframes logopop{from{transform:scale(.9); opacity:.3} to{transform:scale(1); opacity:1}}
.logo-modal-close{position:absolute; top:1.2rem; right:1.4rem; width:46px; height:46px; border-radius:50%;
  background:transparent; border:1px solid rgba(255,255,255,.25); color:#EEF1EA; font-size:1.7rem; line-height:1;
  cursor:pointer; display:grid; place-items:center; transition:border-color .2s, color .2s, transform .2s}
.logo-modal-close:hover{border-color:var(--dark-accent); color:var(--dark-accent); transform:rotate(90deg)}

/* ============ Anti-spam form bits ============ */
.hp-field{position:absolute !important; left:-9999px !important; top:auto; width:1px; height:1px; overflow:hidden}
.captcha-field input{max-width:170px; letter-spacing:.1em}

/* ============ Reveal animation ============ */
.reveal{opacity:0; transform:translateY(22px); transition:opacity .8s ease, transform .8s ease}
.reveal.in{opacity:1; transform:none}

/* ============ prefers-reduced-motion ============ */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important; transition:none!important; scroll-behavior:auto!important}
  .reveal{opacity:1; transform:none}
}