/* =====================================================================
   labs.css — shared stylesheet for the ICANN and PAVE lab pages.
   Carries the same visual language as the main site (styles.css):
   blue-forward gradients, washed cards, gradient-chip section titles.
   Self-contained: no Tailwind, no CDN, no build step.
   ===================================================================== */

:root{
  /* page */
  --bg-top:#fbfafa;
  --bg-bottom:#f3eeee;
  --fg:#0b0f13;
  --muted:#5b6472;
  --muted-2:#78818f;

  /* surfaces */
  --card-top:#ffffff;
  --card-bottom:#fdfbfb;
  --card-border:#e3e8ef;
  --card-border-hover:#e3b9bc;

  /* accent bar */
  --bar1:#73000a;
  --bar2:#9c2731;
  --bar3:#14b8a6;

  /* links */
  --link:#73000a;
  --link-hover:#3a0206;

  --nav:#0f172a;
  --nav-hover:#560008;
  --pill:#fdf6f6;

  --shadow-sm:0 10px 25px rgba(2,6,23,.05), 0 2px 6px rgba(2,6,23,.035);
  --shadow-md:0 18px 30px rgba(2,6,23,.06), 0 2px 6px rgba(2,6,23,.04);
  --shadow-lg:0 22px 38px rgba(2,6,23,.10), 0 6px 12px rgba(2,6,23,.06);

  --radius:1.1rem;
  --maxw:1240px;
}

/* --------------------------- reset --------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100%;
  background:linear-gradient(180deg,var(--bg-top),var(--bg-bottom));
  background-attachment:fixed;
  color:var(--fg);
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation:none !important}
}
h1,h2,h3,h4{margin:0;line-height:1.24;letter-spacing:-.014em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{max-width:100%}
[hidden]{display:none !important}
em{font-style:italic}

a{color:inherit}
a.u{
  color:var(--link);
  text-decoration:underline;
  text-decoration-thickness:1.5px;
  text-underline-offset:3px;
}
a.u:hover{color:var(--link-hover)}

:where(a,button,[tabindex]):focus-visible{
  outline:3px solid var(--accent,#73000a);
  outline-offset:3px;
  border-radius:10px;
}

.skip{
  position:absolute;left:-9999px;top:0;z-index:120;
  background:#fff;color:var(--fg);font-weight:600;
  padding:.75rem 1rem;border-radius:.75rem;border:2px solid currentColor;
}
.skip:focus{left:1rem;top:1rem}

/* --------------------------- chrome --------------------------- */
.topbar{
  height:6px;
  background:linear-gradient(90deg,var(--bar1),var(--bar2),var(--bar3));
  box-shadow:0 2px 8px rgba(0,0,0,.09) inset;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
@media (min-width:640px){.wrap{padding:0 28px}}

/* breadcrumb / site nav */
.sitenav{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  padding:18px 0 0;font-size:14px;color:var(--muted);
}
.sitenav .sep{color:#c3ccd8}

/* --------------------------- cards --------------------------- */
.card{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--card-top),var(--card-bottom));
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:1.15rem 1.35rem;
  box-shadow:var(--shadow-md);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.7;
  background:
    radial-gradient(600px 120px at 110% -10%, rgba(231,163,168,.20), transparent 60%),
    radial-gradient(400px 100px at -10% 110%, rgba(160,214,208,.16), transparent 60%);
}
.card > *{position:relative;z-index:1}
.card:hover{
  transform:translateY(-2px);
  border-color:var(--card-border-hover);
  box-shadow:var(--shadow-lg);
}
.card.flat{box-shadow:var(--shadow-sm)}
.card.flat:hover{transform:none;box-shadow:var(--shadow-sm);border-color:var(--card-border)}
.card.open{
  background:none;border-style:dashed;box-shadow:none;
  border-color:#cfd9e6;
}
.card.open::after{display:none}
.card.open:hover{transform:none;box-shadow:none;border-color:var(--accent-soft-line,#b9c9de)}

/* --------------------------- type helpers --------------------------- */
.muted{color:var(--muted)}
.small{font-size:14.5px}
.xsmall{font-size:12.5px}
.lede{font-size:17px;color:#2b3440;max-width:74ch}

/* section title with gradient chip, matching the main site */
.section-title{
  display:flex;align-items:center;gap:.65rem;
  font-size:1.22rem;font-weight:700;color:#0f172a;
  margin:2.1rem 0 .9rem;
}
.section-title::before{
  content:"";flex:none;
  width:11px;height:26px;border-radius:999px;
  background:linear-gradient(180deg,var(--accent-200,#e8a3a8),var(--accent,#73000a));
  box-shadow:0 6px 14px rgba(115,0,10,.18);
}
.section-title .count{
  font-size:12px;font-weight:600;color:var(--muted-2);
  letter-spacing:.04em;
}

.badge{
  display:inline-block;padding:.2rem .6rem;border-radius:.5rem;
  background:var(--accent-050,#fdeeef);color:var(--accent-900,#4a0207);
  font-weight:650;font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;
}

.btn-pill{
  display:inline-flex;align-items:center;gap:.45rem;
  background:var(--pill);
  border:1px solid var(--card-border);
  border-radius:999px;padding:.5rem .95rem;
  font-size:.9rem;font-weight:500;text-decoration:none;color:var(--nav);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-pill:hover{
  background:linear-gradient(90deg,#fafcff,#e6f0ff);
  border-color:#c7d2fe;
  box-shadow:0 10px 18px rgba(2,6,23,.08);
  transform:translateY(-1px);
}
.btn-solid{
  display:inline-flex;align-items:center;gap:.45rem;
  border-radius:999px;padding:.55rem 1.1rem;
  font-size:.9rem;font-weight:600;text-decoration:none;
  color:#fff;background:linear-gradient(135deg,var(--accent,#73000a),var(--accent-700,#560008));
  border:1px solid transparent;
  box-shadow:0 10px 20px var(--accent-glow,rgba(115,0,10,.22));
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-solid:hover{transform:translateY(-1px);filter:saturate(1.08) brightness(1.04);box-shadow:0 14px 26px var(--accent-glow,rgba(115,0,10,.30))}

.stack{display:grid;gap:14px}
.stack-lg{display:grid;gap:18px}

/* --------------------------- lab accents --------------------------- */
/* ICANN: indigo / sky. PAVE: teal / emerald. Both sit inside the site palette. */
.lab-icann{
  --accent:#73000a;--accent-700:#560008;--accent-200:#e8a3a8;
  --accent-050:#fdeeef;--accent-900:#4a0207;
  --accent-glow:rgba(115,0,10,.25);
  --accent-soft-line:#e3b9bc;
}
.lab-pave{
  --accent:#0d9488;--accent-700:#0f766e;--accent-200:#5eead4;
  --accent-050:#effcf9;--accent-900:#115e59;
  --accent-glow:rgba(13,148,136,.26);
  --accent-soft-line:#9fd9d1;
}

/* --------------------------- lab identity block --------------------------- */
.labhead{
  position:relative;overflow:hidden;
  border:1px solid var(--card-border);
  border-radius:1.35rem;
  padding:1.5rem 1.6rem;
  background:linear-gradient(180deg,#ffffff,#fdfbfb);
  box-shadow:var(--shadow-md);
}
.labhead::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 180px at 108% -30%, var(--accent-050), transparent 62%),
    radial-gradient(420px 160px at -12% 118%, var(--accent-050), transparent 60%);
}
.labhead::after{
  content:"";position:absolute;left:0;right:0;top:0;height:5px;
  background:linear-gradient(90deg,var(--accent),var(--accent-200));
}
.labhead > *{position:relative;z-index:1}
.labtop{display:flex;align-items:flex-start;gap:1rem}
.labmark{
  flex:none;width:58px;height:58px;border-radius:8px;overflow:hidden;
  box-shadow:0 10px 20px var(--accent-glow);
}
.labmark svg{width:100%;height:100%;display:block}
.labname{font-size:1.8rem;font-weight:700;margin-top:.15rem}
.labexpand{font-size:.95rem;font-weight:650;color:var(--accent-900);margin-top:.1rem}
.labblurb{margin-top:.9rem;color:#2b3440;font-size:15.5px}
.labmeta{
  display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1rem;
}
.chip{
  font-size:12px;font-weight:600;letter-spacing:.02em;
  padding:.28rem .65rem;border-radius:999px;
  background:var(--accent-050);color:var(--accent-900);
  border:1px solid var(--accent-soft-line);
}

/* --------------------------- focus areas --------------------------- */
.focus{display:flex;gap:.95rem;align-items:flex-start}
.focus-num{
  flex:none;width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  font-size:13px;font-weight:750;
  color:var(--accent-900);
  background:var(--accent-050);
  border:1px solid var(--accent-soft-line);
}
.focus h4{font-size:15.5px;font-weight:650}
.focus p{margin-top:.28rem;font-size:14.5px;color:var(--muted)}

/* --------------------------- projects --------------------------- */
.proj h4{font-size:15.5px;font-weight:650}
.proj p{margin-top:.32rem;font-size:14.5px;color:var(--muted)}
.tag{
  display:inline-block;margin-top:.7rem;
  font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  color:var(--accent-900);background:var(--accent-050);
  border:1px solid var(--accent-soft-line);
  padding:.22rem .55rem;border-radius:.45rem;
}

/* --------------------------- people --------------------------- */
.person{display:flex;align-items:center;gap:.85rem}
.avatar{
  flex:none;width:42px;height:42px;border-radius:50%;
  display:grid;place-items:center;
  font-weight:700;font-size:14px;color:#fff;
  background:linear-gradient(140deg,var(--accent),var(--accent-700));
  box-shadow:0 8px 16px var(--accent-glow);
}
.avatar.ghost{
  background:none;color:var(--muted-2);
  border:1.5px dashed #c3ccd8;box-shadow:none;
}
.person h4{font-size:15px;font-weight:650}
.person p{font-size:13.5px;color:var(--muted)}

/* --------------------------- publications --------------------------- */
.pub{
  border-left:3px solid var(--accent-050);
  padding:.1rem 0 .1rem .95rem;
  transition:border-color .2s ease;
}
.pub:hover{border-left-color:var(--accent)}
.pub h4{font-size:14.8px;font-weight:650;line-height:1.45}
.pub .cite{font-size:12.8px;color:var(--muted);margin-top:.25rem}
.pub .venue{font-weight:600;color:var(--accent-900)}

/* --------------------------- join box --------------------------- */
.join{
  border:1px solid var(--accent-soft-line);
  background:
    linear-gradient(180deg,#ffffff,var(--accent-050));
}
.join::after{display:none}
.join:hover{transform:none;box-shadow:var(--shadow-md);border-color:var(--accent-soft-line)}
.join h3{font-size:1.05rem;font-weight:700}
.join p + p{margin-top:.7rem}
.join .checklist{margin-top:.8rem;display:grid;gap:.4rem}
.join .checklist li{display:flex;gap:.5rem;font-size:14.5px;color:var(--muted)}
.join .checklist li::before{
  content:"";flex:none;margin-top:.55rem;
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}

/* --------------------------- footer --------------------------- */
.footer{
  border-top:1px solid #e2e8f0;
  margin-top:2.4rem;padding:1rem 0 2.6rem;
  color:#64748b;font-size:12.8px;
  display:flex;flex-wrap:wrap;gap:.6rem;justify-content:space-between;
}

/* --------------------------- print --------------------------- */
@media print{
  .btn-pill,.btn-solid,.tabbar,.skip{display:none !important}
  body{background:#fff}
  .card,.labhead{box-shadow:none;break-inside:avoid}
  a.u{color:#000 !important}
}

/* =====================================================================
   Hub page (labs.html): split view on desktop, tab switcher on mobile
   ===================================================================== */

.hero{padding:26px 0 6px}
.hero h1{font-size:2.2rem;font-weight:700}
@media (min-width:640px){.hero h1{font-size:2.6rem}}
.hero .kicker{
  font-size:12.5px;font-weight:700;letter-spacing:.11em;text-transform:uppercase;
  color:#73000a;
}
.hero .lede{margin-top:.85rem}
.hero .actions{margin-top:1.15rem;display:flex;flex-wrap:wrap;gap:.5rem}

/* mobile lab switcher */
.tabbar{
  position:sticky;top:0;z-index:40;
  margin:1.2rem -20px 0;padding:.55rem 20px .7rem;
  background:linear-gradient(180deg,rgba(251,250,250,.96),rgba(251,250,250,.82));
  backdrop-filter:blur(10px);
}
@media (min-width:640px){.tabbar{margin-left:-28px;margin-right:-28px;padding-left:28px;padding-right:28px}}
.tablist{
  display:flex;gap:.4rem;padding:.35rem;
  background:#fff;border:1px solid var(--card-border);
  border-radius:1rem;box-shadow:var(--shadow-sm);
}
.tabbtn{
  flex:1;min-width:0;padding:.6rem .4rem;
  border:0;border-radius:.75rem;background:transparent;
  font:inherit;font-weight:700;font-size:.95rem;color:var(--muted);
  cursor:pointer;text-align:center;
  transition:background .18s ease,color .18s ease;
}
.tabbtn small{display:block;font-size:11px;font-weight:500;color:var(--muted-2);margin-top:1px}
.tabbtn[aria-selected="true"]{color:#0f172a}
.tabbtn[data-lab="icann"][aria-selected="true"]{background:#fdeeef;box-shadow:inset 0 -3px 0 #73000a}
.tabbtn[data-lab="pave"][aria-selected="true"]{background:#effcf9;box-shadow:inset 0 -3px 0 #0d9488}
@media (min-width:1024px){.tabbar{display:none}}

.split{display:grid;grid-template-columns:1fr;gap:2rem;margin-top:1.4rem}
@media (min-width:1024px){
  .split{grid-template-columns:1fr 1fr;gap:2.5rem;align-items:start;margin-top:1.9rem}
}
/* Line the two columns up section by section so "Focus areas" in ICANN sits
   level with "Focus areas" in PAVE. Both panels have the same 12 blocks.
   Browsers without subgrid fall back to two plain columns. */
@supports (grid-template-rows: subgrid){
  @media (min-width:1024px){
    .split{grid-template-rows:repeat(12,auto);row-gap:0}
    .panel{display:grid;grid-template-rows:subgrid;grid-row:span 12;align-content:start}
    .panel > *{align-self:start}
    .panel .stack,.panel .stack-lg{align-content:start}
  }
}
.panel{min-width:0}
.panel:focus{outline:none}

.morelink{margin-top:.9rem;font-size:14.5px}

/* cross-lab band */
.band{
  margin:2.6rem 0 0;
  border:1px solid var(--card-border);
  border-radius:1.35rem;
  padding:1.6rem 1.7rem;
  background:
    radial-gradient(700px 200px at 100% 0%, #fdeeef, transparent 60%),
    radial-gradient(700px 200px at 0% 100%, #effcf9, transparent 60%),
    linear-gradient(180deg,#ffffff,#fdfbfb);
  box-shadow:var(--shadow-md);
}
.band h2{font-size:1.35rem;font-weight:700}
.band .cols{
  display:grid;gap:1.1rem;margin-top:1rem;
}
@media (min-width:760px){.band .cols{grid-template-columns:1fr 1fr}}
.band p{color:var(--muted);font-size:15px;max-width:62ch}

/* =====================================================================
   Individual lab pages (icann.html, pave.html)
   ===================================================================== */
.labpage-grid{display:grid;gap:1.6rem;margin-top:1.4rem}
@media (min-width:1000px){
  .labpage-grid{grid-template-columns:minmax(0,1fr) 300px;gap:2.2rem;align-items:start}
  .labpage-side{position:sticky;top:1.5rem}
}
.sidecard h4{
  font-size:12px;font-weight:750;letter-spacing:.09em;text-transform:uppercase;
  color:var(--accent-900);margin-bottom:.6rem;
}
.sidenav{display:grid;gap:.15rem}
.sidenav a{
  display:block;border-radius:.7rem;padding:.45rem .7rem;
  font-size:14.5px;text-decoration:none;color:var(--nav);
  transition:background .15s ease,color .15s ease,transform .15s ease;
}
.sidenav a:hover{background:var(--accent-050);color:var(--accent-900);transform:translateX(2px)}
.two-col{display:grid;gap:14px}
@media (min-width:700px){.two-col{grid-template-columns:1fr 1fr}}
.section{scroll-margin-top:1.5rem}

/* =====================================================================
   Standalone lab site: masthead navigation
   ===================================================================== */
.sitehead{
  position:sticky;top:0;z-index:50;
  background:rgba(251,250,250,.88);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--card-border);
}
.sitehead .inner{
  max-width:var(--maxw);margin:0 auto;padding:.7rem 20px;
  display:flex;align-items:center;gap:1rem;flex-wrap:wrap;
}
@media (min-width:640px){.sitehead .inner{padding-left:28px;padding-right:28px}}
.brand{
  display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--fg);
  font-weight:750;font-size:15.5px;letter-spacing:-.01em;margin-right:auto;
}
.brand .bmark{
  width:34px;height:34px;border-radius:5px;flex:none;overflow:hidden;
  box-shadow:0 4px 10px rgba(32,30,29,.18);
}
.brand .bmark svg{width:100%;height:100%;display:block}
.brand small{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:0}
.mainnav{display:flex;flex-wrap:wrap;gap:.15rem}
.mainnav a{
  display:inline-block;padding:.42rem .75rem;border-radius:.7rem;
  font-size:14.5px;font-weight:500;text-decoration:none;color:var(--nav);
  transition:background .15s ease,color .15s ease;
}
.mainnav a:hover{background:#fdf0f0;color:var(--nav-hover)}
.mainnav a[aria-current="page"]{background:#fbe6e6;color:var(--nav-hover);font-weight:650}

/* publications page */
.pubfilter{display:flex;flex-wrap:wrap;gap:.4rem;margin:.2rem 0 1.4rem}
.yearhead{
  font-size:1.05rem;font-weight:700;color:#0f172a;
  margin:2rem 0 .8rem;padding-bottom:.4rem;border-bottom:1px solid var(--line,#e3e8ef);
}
.pub .labtag{
  display:inline-block;font-size:10.5px;font-weight:750;letter-spacing:.06em;text-transform:uppercase;
  padding:.1rem .4rem;border-radius:.3rem;margin-right:.4rem;vertical-align:1px;
}
.labtag.i{background:#fdeeef;color:#4a0207}
.labtag.p{background:#effcf9;color:#115e59}

/* join page */
.faq{display:grid;gap:12px}
.faq details{
  background:linear-gradient(180deg,#fff,#fdfbfb);
  border:1px solid var(--card-border);border-radius:var(--radius);
  padding:1rem 1.25rem;box-shadow:var(--shadow-sm);
}
.faq summary{
  cursor:pointer;font-weight:650;font-size:15.5px;list-style:none;
  display:flex;justify-content:space-between;gap:1rem;align-items:center;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;font-size:20px;color:var(--muted-2);flex:none}
.faq details[open] summary::after{content:"−"}
.faq details p{margin-top:.7rem;font-size:14.8px;color:var(--muted)}
.faq details p + p{margin-top:.6rem}

/* 404 */
.center-page{max-width:620px;margin:0 auto;padding:5rem 0;text-align:center}
.center-page h1{font-size:2.4rem;font-weight:750}
.center-page p{margin-top:.9rem;color:var(--muted)}
.center-page .actions{margin-top:1.6rem;display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap}