/* ============================================================
   Olopade Neuroscience & Comparative Anatomy Lab
   Design tokens
   Ink Navy   #10182B   — primary dark ground
   Parchment  #EDE6D6   — light ground (aged atlas paper, not cream-cliché)
   Brass      #C9A227   — accent, gold leaf / engraved plate lettering
   Verdigris  #4F7A68   — secondary accent, specimen green
   Rust Clay  #A24936   — tertiary, used sparingly for emphasis marks
   ============================================================ */

:root{
  --ink:        #10182B;
  --ink-2:      #182342;
  --parchment:  #EDE6D6;
  --parchment-2:#E3D9C4;
  --paper-line: #CFC3A6;
  --brass:      #C9A227;
  --brass-dim:  #9c7f22;
  --verdigris:  #4F7A68;
  --clay:       #A24936;
  --ink-text:   #1B2333;
  --cream-text: #F4EFE3;
  --muted:      #7C8AA0;
  --muted-2:    #8a7f66;

  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --wrap: 1180px;
  --radius: 4px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--parchment);
  color:var(--ink-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; }

.wrap{ max-width:var(--wrap); margin:0 auto; padding:0 32px; }

/* subtle paper grain */
.grain{
  position:fixed; inset:0; pointer-events:none; z-index:999;
  opacity:.035; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- headings ---------- */
h1,h2,h3{ font-family:var(--font-display); font-weight:600; margin:0; letter-spacing:-0.01em; }
h1 em, h2 em, h3 em{ font-style:italic; font-weight:500; color:var(--brass); }
.kicker{
  font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.14em;
  font-size:12px; color:var(--verdigris); margin:0 0 14px; font-weight:500;
}
.kicker.light{ color:var(--brass); }
.section-title{ font-size:clamp(28px,3.4vw,42px); max-width:760px; margin-bottom:8px; }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(16,24,43,.94); backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:76px; }
.brand{ display:flex; align-items:center; gap:12px; text-decoration:none; color:#fff; }
.ui-logo{ width:32px; height:32px; flex-shrink:0; border-radius:50%; background:#fff; padding:2px; }
.brand-div{ width:1px; height:26px; background:rgba(255,255,255,.18); }
.cenmat-logo{ height:30px; width:auto; display:block; }
.brand-tagline{
  font-family:var(--font-mono); font-size:11px; color:#9fb0c9; letter-spacing:.02em;
  max-width:210px; line-height:1.35; padding-left:12px; border-left:1px solid rgba(255,255,255,.15);
}
.nav-toggle{ display:none; }

/* ---------- hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:radial-gradient(120% 100% at 50% -10%, #1c2a4d 0%, var(--ink) 55%, #0b1120 100%);
  color:var(--cream-text);
  padding:110px 0 0;
  min-height:640px;
}
.hero-inner{ position:relative; z-index:2; text-align:center; padding-bottom:60px; }
.eyebrow{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase;
  color:#9fb0c9; margin-bottom:22px;
}
.hero h1{
  font-size:clamp(34px,5.4vw,64px); line-height:1.08; color:#fff;
  max-width:820px; margin:0 auto 22px;
}
.hero-lede{
  max-width:600px; margin:0 auto 36px; color:#c3cade; font-size:17px;
}
.hero-tagline{ position:relative; max-width:600px; margin:0 auto 36px; min-height:52px; }
.hero-tagline .tagline{
  position:absolute; left:0; right:0; top:0; color:#c3cade; font-size:17px;
  opacity:0; transition:opacity .6s ease;
}
.hero-tagline .tagline.is-active{ position:relative; opacity:1; }
.hero-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:13px 26px; border-radius:2px; font-weight:600; font-size:14px;
  text-decoration:none; transition:transform .2s ease, background .2s ease, color .2s ease;
  border:1px solid transparent;
}
.btn-primary{ background:var(--brass); color:#20180a; }
.btn-primary:hover{ background:#dcb236; transform:translateY(-1px); }
.btn-ghost{ border-color:rgba(255,255,255,.35); color:#fff; }
.btn-ghost:hover{ background:rgba(255,255,255,.08); transform:translateY(-1px); }

.hero-signature{
  position:absolute; left:0; right:0; bottom:0; width:100%; height:auto;
  color:#3a4a72; opacity:.55; z-index:1;
}
.sig-outline{ fill:none; stroke:#5b6d96; stroke-width:1.1; }
.sig-inner{ fill:none; stroke:var(--brass); stroke-width:1; opacity:.8; }
.sig-fiber{ fill:none; stroke:var(--verdigris); stroke-width:1; opacity:.9; }
.sig-node{ fill:var(--brass); }
.sig-pulse{ transform-origin:600px 300px; animation:breathe 7s ease-in-out infinite; }
@keyframes breathe{
  0%,100%{ transform:scale(1); opacity:1; }
  50%{ transform:scale(1.015); opacity:.85; }
}

/* ---------- about ---------- */
.section{ padding:96px 0; }
.about{ background:var(--parchment); }
.about-grid{ display:grid; grid-template-columns:1.4fr 1fr; gap:64px; align-items:start; }
.about-copy h2{ font-size:clamp(26px,3vw,36px); margin-bottom:20px; max-width:600px; }
.about-copy p{ color:#3b4256; max-width:560px; margin:0 0 16px; }
.stat-row{ display:flex; gap:40px; margin-top:36px; padding-top:28px; border-top:1px solid var(--paper-line); }
.stat{ display:flex; flex-direction:column; }
.stat-num{ font-family:var(--font-display); font-size:34px; color:var(--verdigris); font-weight:600; }
.stat-label{ font-size:12.5px; color:var(--muted-2); font-family:var(--font-mono); margin-top:4px; }

.pi-card{
  background:var(--ink); color:var(--cream-text); border-radius:var(--radius); overflow:hidden;
  box-shadow:0 18px 40px -18px rgba(16,24,43,.45);
}
.pi-card img{ width:100%; aspect-ratio:4/5; object-fit:cover; object-position:top center; filter:grayscale(8%); }
.pi-card-body{ padding:26px 24px 30px; }
.pi-role{ font-family:var(--font-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--brass); margin:0 0 10px; }
.pi-card-body h3{ font-size:20px; color:#fff; margin-bottom:8px; }
.pi-cred{ font-size:13.5px; color:#a9b4cc; margin:0 0 14px; }
.pi-desc{ font-size:14px; color:#c3cade; margin:0; }

/* ---------- honors ---------- */
.honors{ background:var(--parchment); border-top:1px solid var(--paper-line); border-bottom:1px solid var(--paper-line); }
.honors .section-title{ max-width:640px; }
.honors-list{
  list-style:none; margin:44px 0 0; padding:0;
  border-top:1px solid var(--paper-line);
}
.honors-list li{
  display:grid; grid-template-columns:110px 1fr; gap:24px;
  padding:20px 0; border-bottom:1px solid var(--paper-line);
}
.honors-year{ font-family:var(--font-mono); color:var(--verdigris); font-size:13.5px; padding-top:2px; }
.honors-list p{ margin:0; font-size:15px; color:var(--ink-text); max-width:640px; }
.honors-note{ margin-top:26px; font-size:13.5px; color:var(--muted-2); max-width:640px; }
.honors-note em{ font-style:italic; color:var(--clay); font-weight:600; }

/* ---------- focus ---------- */
.focus{ background:var(--ink); color:var(--cream-text); }
.focus .section-title{ color:#fff; }
.focus-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:rgba(255,255,255,.08); margin-top:48px; border:1px solid rgba(255,255,255,.08); }
.focus-card{ background:var(--ink); padding:32px 26px; min-height:220px; display:flex; flex-direction:column; }
.focus-index{ font-family:var(--font-mono); color:var(--brass); font-size:13px; margin-bottom:22px; }
.focus-card h3{ font-size:18px; color:#fff; margin-bottom:12px; line-height:1.3; }
.focus-card p{ font-size:13.5px; color:#aab4cb; margin:0; }

/* ---------- team ---------- */
.team{ background:var(--parchment-2); }

.team-subhead{
  font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.12em;
  font-size:12px; color:var(--ink); font-weight:600;
  margin:52px 0 20px; padding-bottom:10px; border-bottom:1px solid var(--paper-line);
  display:flex; align-items:center; gap:10px;
}
.team-subhead::before{ content:""; width:8px; height:8px; background:var(--brass); border-radius:50%; flex-shrink:0; }
.team .team-subhead:first-of-type{ margin-top:8px; }
.team-subnote{ font-size:13.5px; color:var(--muted-2); margin:-10px 0 20px; max-width:520px; }
.phd-grid .team-body{ border-top-color:var(--verdigris); }
.phd-grid .team-role{ color:var(--clay); }

/* Collaborators: distinct, elevated treatment to signal seniority — outside the member grid */
.collab-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:24px;
}
.collab-card{
  display:flex; align-items:center; gap:16px;
  background:var(--ink); border:1px solid rgba(201,162,39,.35);
  padding:18px; border-radius:2px;
}
.collab-photo{ width:64px; height:64px; border-radius:50%; overflow:hidden; flex-shrink:0; border:2px solid var(--brass); }
.collab-photo img{ width:100%; height:100%; object-fit:cover; }
.collab-body{ min-width:0; }
.collab-role{
  font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:.08em;
  color:var(--brass); margin:0 0 4px;
}
.collab-name{ font-family:var(--font-display); font-size:15.5px; color:#fff; margin:0 0 3px; font-weight:600; }
.collab-focus{ font-size:12px; color:#aab4cb; margin:0; }

.team-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:28px;
}
.team-contact{
  display:block; margin-top:10px; font-family:var(--font-mono); font-size:11.5px;
  color:var(--verdigris); text-decoration:none; word-break:break-all;
}
.team-contact:hover{ text-decoration:underline; }
.team-contact-empty{ color:var(--muted-2); font-style:italic; }

.past-list{
  list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(2,1fr);
  gap:0 40px; border-top:1px solid var(--paper-line);
}
.past-row{
  display:flex; justify-content:space-between; align-items:baseline; gap:16px;
  padding:14px 0; border-bottom:1px solid var(--paper-line);
}
.past-name{ font-family:var(--font-display); font-size:15px; font-weight:600; }
.past-role{ font-family:var(--font-mono); font-size:11.5px; color:var(--muted-2); text-align:right; flex-shrink:0; }
.past-empty{
  grid-column:1 / -1; border:1px dashed var(--paper-line); padding:40px 24px; text-align:center;
  color:var(--muted-2); font-size:14px; background:rgba(255,255,255,.3); list-style:none;
}
.team-card{
  background:var(--parchment); border:1px solid var(--paper-line);
  display:flex; flex-direction:column; overflow:hidden;
}
.team-photo{ position:relative; aspect-ratio:3/3.6; overflow:hidden; background:#ddd3ba; }
.team-photo img{ width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.team-card:hover .team-photo img{ transform:scale(1.04); }
.team-body{ padding:18px 18px 22px; border-top:2px solid var(--brass); }
.team-role{
  font-family:var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.1em;
  color:var(--verdigris); margin:0 0 6px;
}
.team-name{ font-family:var(--font-display); font-size:17px; font-weight:600; margin:0 0 4px; }
.team-focus{ font-size:12.5px; color:var(--muted-2); margin:0; }
.team-card.pi-highlight{ grid-column:span 2; }
.team-card.pi-highlight .team-photo{ aspect-ratio:16/10; }

/* ---------- publications ---------- */
.publications{ background:var(--ink); color:var(--cream-text); }
.publications .section-title{ color:#fff; }
.pub-list{ list-style:none; margin:44px 0 0; padding:0; border-top:1px solid rgba(255,255,255,.12); }
.pub-list li{
  display:grid; grid-template-columns:80px 1fr; gap:24px;
  padding:24px 0; border-bottom:1px solid rgba(255,255,255,.12);
}
.pub-year{ font-family:var(--font-mono); color:var(--brass); font-size:14px; padding-top:2px; }
.pub-title{ font-size:16px; color:#fff; margin:0 0 6px; line-height:1.4; font-family:var(--font-display); font-weight:500;}
.pub-title a{ color:#fff; text-decoration:none; border-bottom:1px solid rgba(201,162,39,.5); transition:border-color .2s ease, color .2s ease; }
.pub-title a:hover{ color:var(--brass); border-color:var(--brass); }
.pub-meta{ font-size:13px; color:#9fb0c9; margin:0; }
.pub-note{ margin-top:28px; font-size:13.5px; color:#8b9ab8; }
.pub-note a{ color:var(--brass); text-decoration:underline; text-underline-offset:3px; }

/* ---------- contact ---------- */
.contact{ background:var(--parchment); }
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:64px; }
.contact-lede{ color:#3b4256; max-width:440px; }
.contact-details{ display:flex; flex-direction:column; gap:0; border-top:1px solid var(--paper-line); }
.contact-item{
  display:flex; justify-content:space-between; gap:20px; padding:18px 0;
  border-bottom:1px solid var(--paper-line); flex-wrap:wrap;
}
.contact-label{ font-family:var(--font-mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.1em; color:var(--muted-2); }
.contact-value{ font-weight:600; text-align:right; text-decoration:none; }
a.contact-value:hover{ color:var(--verdigris); }

/* ---------- footer ---------- */
.site-footer{ background:#0b1120; color:#7684a0; padding:32px 0; }
.footer-inner{ display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; font-size:12.5px; }
.footer-note{ max-width:480px; }

/* ---------- multi-page nav ---------- */
.main-nav{ display:flex; align-items:center; gap:30px; }
.nav-item{ position:relative; display:flex; align-items:center; gap:2px; }
.nav-link{ text-decoration:none; color:#dfe4ee; font-size:14px; font-weight:500; padding:8px 4px; position:relative; }
.nav-link::after{ content:""; position:absolute; left:0; bottom:1px; width:0; height:1px; background:var(--brass); transition:width .25s ease; }
.nav-link:hover{ color:#fff; }
.nav-link:hover::after{ width:100%; }
.nav-link.active{ color:var(--brass); }
.nav-link.active::after{ width:100%; }
.nav-caret{
  background:none; border:none; cursor:pointer; color:#9fb0c9; font-size:9px;
  padding:8px 4px; line-height:1;
}
.dropdown{
  position:absolute; top:100%; left:0; min-width:230px; background:var(--ink);
  border:1px solid rgba(255,255,255,.1); padding:8px 0; box-shadow:0 18px 40px -18px rgba(16,24,43,.5);
  opacity:0; visibility:hidden; transform:translateY(4px);
  transition:opacity .18s ease, transform .18s ease; z-index:60;
}
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown, .nav-item.open .dropdown{
  opacity:1; visibility:visible; transform:translateY(0);
}
.dropdown a{ display:block; padding:10px 18px; font-size:13px; color:#dbe1ec; text-decoration:none; white-space:nowrap; }
.dropdown a:hover{ color:var(--brass); background:rgba(255,255,255,.05); }
.nav-cta{
  margin-left:16px; background:var(--brass); color:#20180a !important; padding:10px 20px;
  border-radius:2px; font-weight:600;
}
.nav-cta::after{ display:none; }
.nav-cta:hover{ background:#dcb236; }

/* ---------- interior page hero ---------- */
.page-hero{
  background:radial-gradient(120% 100% at 50% -10%, #1c2a4d 0%, var(--ink) 55%, #0b1120 100%);
  color:var(--cream-text); padding:76px 0 64px;
}
.page-hero .eyebrow{ color:#9fb0c9; }
.page-hero h1{ font-size:clamp(30px,4.4vw,50px); color:#fff; max-width:760px; line-height:1.12; }
.page-hero p{ color:#c3cade; max-width:600px; margin-top:16px; font-size:16px; }

/* ---------- home: mission ---------- */
.mission{ background:var(--parchment); padding:88px 0 30px; text-align:center; }
.mission p{ max-width:740px; margin:0 auto; font-size:18px; color:#3b4256; line-height:1.75; }
.mission .btn{ margin-top:30px; }

/* ---------- home: research cards (link variant of focus-card) ---------- */
.focus-card-link{ text-decoration:none; color:inherit; display:block; }
.focus-card-link .focus-card{ height:100%; transition:background .2s ease; }
.focus-card-link:hover .focus-card{ background:#171f38; }
.focus-more{ margin-top:40px; text-align:center; }

/* ---------- home: achievement band ---------- */
.achieve-band{ background:var(--ink-2); color:#fff; padding:76px 0; text-align:center; border-top:1px solid rgba(255,255,255,.08); }
.achieve-band h2{ font-size:clamp(24px,3vw,34px); max-width:760px; margin:0 auto 18px; color:#fff; }
.achieve-band p{ color:#c3cade; max-width:660px; margin:0 auto 30px; font-size:15.5px; }
.achieve-band .stat-row{ justify-content:center; border-top:none; margin-top:0; padding-top:0; margin-bottom:34px; }
.achieve-band .stat-num{ color:var(--brass); }
.achieve-band .stat-label{ color:#9aa6c0; }

/* ---------- pi spotlight (homepage) ---------- */
.pi-spotlight{ background:var(--parchment-2); padding:88px 0; }
.pi-spotlight-inner{
  display:grid; grid-template-columns:220px 1fr; gap:44px; align-items:center;
}
.pi-spotlight-inner img{
  width:220px; height:220px; border-radius:50%; object-fit:cover; object-position:top center;
  border:3px solid var(--brass); filter:grayscale(6%);
}
.pi-spotlight-cred{ font-size:14px; color:var(--muted-2); margin:10px 0 14px; }
.pi-spotlight-desc{ font-size:15.5px; color:#3b4256; max-width:560px; margin:0 0 24px; }

/* ---------- affiliations strip ---------- */
.affil-strip{ background:var(--parchment); padding:64px 0; border-top:1px solid var(--paper-line); border-bottom:1px solid var(--paper-line); }
.affil-strip p.affil-lede{ color:#3b4256; max-width:640px; }
.affil-row{ display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
.affil-badge{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.05em; text-transform:uppercase;
  border:1px solid var(--paper-line); padding:10px 16px; color:var(--ink); background:var(--parchment-2);
}

/* ---------- join / CTA band ---------- */
.join-band{ background:var(--brass); color:#20180a; padding:60px 0; text-align:center; }
.join-band h2{ font-size:clamp(22px,2.6vw,30px); margin-bottom:14px; color:#20180a; }
.join-band p{ max-width:560px; margin:0 auto 26px; color:#4a3c10; }
.join-band .btn-primary{ background:#20180a; color:#F4EFE3; }
.join-band .btn-primary:hover{ background:#2f2412; }
.join-band .btn-ghost{ border-color:rgba(32,24,10,.4); color:#20180a; }
.join-band .btn-ghost:hover{ background:rgba(32,24,10,.08); }

/* ---------- research page: species grid ---------- */
.species-intro{ max-width:680px; color:#3b4256; margin-top:8px; }
.species-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-top:36px; }
.species-card{ background:var(--parchment); border:1px solid var(--paper-line); padding:22px; }
.species-card h3{ font-size:16px; margin-bottom:6px; font-weight:600; }
.species-card p{ font-size:13px; color:var(--muted-2); margin:0; }

/* ---------- research page: gallery ---------- */
.gallery-intro{ max-width:680px; color:#3b4256; margin-top:8px; }
.gallery-grid{
  display:grid; grid-template-columns:repeat(3,1fr); grid-auto-rows:260px;
  gap:16px; margin-top:36px;
}
.gallery-item{
  margin:0; position:relative; overflow:hidden; border-radius:var(--radius);
  box-shadow:0 14px 30px -18px rgba(16,24,43,.35);
}
.gallery-item-wide{ grid-column:span 2; grid-row:span 2; }
.gallery-item img{
  width:100%; height:100%; object-fit:contain; background:var(--ink); display:block;
  transition:transform .5s cubic-bezier(.16,.8,.24,1);
}
.gallery-item:hover img{ transform:scale(1.05); }
.gallery-item figcaption{
  position:absolute; left:0; right:0; bottom:0;
  padding:14px 16px 12px; font-family:var(--font-mono); font-size:12px; color:var(--cream-text);
  background:linear-gradient(to top, rgba(16,24,43,.88), rgba(16,24,43,0));
}

/* ---------- research page: method blocks ---------- */
.method-block{ display:grid; grid-template-columns:220px 1fr; gap:32px; padding:28px 0; border-bottom:1px solid rgba(255,255,255,.1); }
.method-block h3{ font-size:16px; color:var(--brass); }
.method-block p{ font-size:14.5px; color:#c3cade; margin:0; max-width:620px; }

/* ---------- footer ---------- */
.footer-grid{ display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:36px; padding-bottom:30px; border-bottom:1px solid rgba(255,255,255,.1); margin-bottom:22px; }
.footer-brand p{ color:#9aa6c0; font-size:13px; max-width:280px; margin-top:12px; }
.footer-logo{ height:26px; }
.footer-col h4{ font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.1em; font-size:11px; color:var(--brass); margin:0 0 14px; }
.footer-col a{ display:block; color:#aab4cb; text-decoration:none; font-size:13px; margin-bottom:10px; }
.footer-col a:hover{ color:#fff; }

/* ---------- animations ---------- */
.js .reveal{
  opacity:0; transform:translateY(26px);
  transition:opacity .7s cubic-bezier(.16,.8,.24,1), transform .7s cubic-bezier(.16,.8,.24,1);
}
.reveal.is-visible{ opacity:1; transform:translateY(0); }

.js .reveal-group > *{
  opacity:0; transform:translateY(22px);
  transition:opacity .6s cubic-bezier(.16,.8,.24,1), transform .6s cubic-bezier(.16,.8,.24,1);
}
.reveal-group.is-visible > *{ opacity:1; transform:translateY(0); }
.reveal-group > *:nth-child(1){ transition-delay:.02s; }
.reveal-group > *:nth-child(2){ transition-delay:.09s; }
.reveal-group > *:nth-child(3){ transition-delay:.16s; }
.reveal-group > *:nth-child(4){ transition-delay:.23s; }
.reveal-group > *:nth-child(5){ transition-delay:.30s; }
.reveal-group > *:nth-child(6){ transition-delay:.37s; }
.reveal-group > *:nth-child(7){ transition-delay:.44s; }
.reveal-group > *:nth-child(8){ transition-delay:.51s; }
.reveal-group > *:nth-child(9){ transition-delay:.58s; }
.reveal-group > *:nth-child(10){ transition-delay:.65s; }
.reveal-group > *:nth-child(11){ transition-delay:.72s; }

/* hover lift for interactive cards */
.focus-card, .species-card, .team-card, .collab-card, .pi-card{
  transition:transform .3s ease, box-shadow .3s ease;
}
.focus-card:hover{ transform:translateY(-4px); }
.species-card:hover{ transform:translateY(-4px); box-shadow:0 14px 30px -18px rgba(16,24,43,.35); }
.team-card:hover{ transform:translateY(-4px); box-shadow:0 14px 30px -18px rgba(16,24,43,.25); }
.collab-card:hover{ transform:translateY(-3px); box-shadow:0 14px 30px -18px rgba(16,24,43,.5); }
.affil-badge{ transition:transform .25s ease, background .25s ease; }
.affil-badge:hover{ transform:translateY(-2px); background:var(--brass); color:#20180a; border-color:var(--brass); }

/* logo mark subtle breathing, echoes the hero signature */
.cenmat-logo{ transition:transform .3s ease; }
.brand:hover .cenmat-logo{ transform:scale(1.03); }

@media (prefers-reduced-motion: reduce){
  .reveal, .reveal-group > *{ opacity:1; transform:none; transition:none; }
}

/* ---------- responsive ---------- */

/* Large tablet / small desktop */
@media (max-width: 1300px){
  .brand-tagline{ display:none; }
}

@media (max-width: 1080px){
  .wrap{ padding:0 24px; }
  .focus-grid{ grid-template-columns:repeat(2,1fr); }
  .team-grid{ grid-template-columns:repeat(3,1fr); }
}

/* Tablet */
@media (max-width: 980px){
  .about-grid, .contact-grid{ grid-template-columns:1fr; }
  .about-grid{ gap:40px; }
  .pi-card{ max-width:420px; }
  .pi-spotlight-inner{ grid-template-columns:1fr; text-align:center; justify-items:center; }
  .pi-spotlight-desc{ margin-left:auto; margin-right:auto; }
  .focus-grid{ grid-template-columns:repeat(2,1fr); }
  .team-grid{ grid-template-columns:repeat(2,1fr); }
  .past-list{ grid-template-columns:1fr; }
  .team-card.pi-highlight{ grid-column:span 2; }
  .collab-grid{ grid-template-columns:repeat(2,1fr); }
  .gallery-grid{ grid-template-columns:repeat(2,1fr); grid-auto-rows:220px; }
  .gallery-item-wide{ grid-column:span 2; grid-row:span 1; }
  .main-nav{ display:none; }
  .nav-toggle{ display:flex; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px; }
  .nav-toggle span{ width:22px; height:2px; background:#fff; }
  .main-nav.open{
    display:flex; flex-direction:column; align-items:stretch; gap:0; position:absolute; top:76px; left:0; right:0;
    background:var(--ink); border-bottom:1px solid rgba(255,255,255,.1); padding:8px 24px 16px;
    z-index:50; max-height:80vh; overflow-y:auto;
  }
  .main-nav.open .nav-item{ flex-direction:column; align-items:stretch; }
  .main-nav.open .nav-link{ padding:12px 0; border-bottom:1px solid rgba(255,255,255,.1); color:#dfe4ee; }
  .main-nav.open .nav-link::after{ display:none; }
  .main-nav.open .nav-item > .nav-link{ display:flex; justify-content:space-between; align-items:center; border-bottom:none; }
  .main-nav.open .nav-caret{ position:absolute; right:0; top:2px; padding:12px 4px; color:#9fb0c9; }
  .main-nav.open .dropdown{
    position:static; opacity:1; visibility:visible; transform:none; display:none;
    background:transparent; border:none; box-shadow:none; padding:0 0 6px 14px;
  }
  .main-nav.open .nav-item.open .dropdown{ display:block; }
  .main-nav.open .dropdown a{ color:#c3cade; padding:9px 0; font-size:13px; }
  .main-nav.open .nav-item{ border-bottom:1px solid rgba(255,255,255,.1); }
  .main-nav.open .nav-item .nav-link{ border-bottom:none; }
  .main-nav.open .nav-cta{ margin:14px 0 0; text-align:center; }
  .brand-tagline{ display:none; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:28px; }
}

/* Large phone / small tablet */
@media (max-width: 720px){
  .section{ padding:72px 0; }
  .hero{ padding-top:90px; min-height:auto; }
  .hero-inner{ padding-bottom:70px; }
  .hero h1{ font-size:clamp(30px,7vw,44px); }
  .hero-lede{ font-size:15.5px; }
  .stat-row{ gap:24px; flex-wrap:wrap; row-gap:20px; }
  .focus-grid{ grid-template-columns:1fr; }
  .focus-card{ min-height:auto; padding:26px 22px; }
  .team-grid{ grid-template-columns:1fr; }
  .past-row{ flex-direction:column; align-items:flex-start; gap:2px; }
  .past-role{ text-align:left; }
  .team-card.pi-highlight{ grid-column:span 1; }
  .collab-grid{ grid-template-columns:1fr; }
  .pub-list li{ grid-template-columns:1fr; gap:6px; padding:20px 0; }
  .honors-list li{ grid-template-columns:1fr; gap:6px; padding:16px 0; }
  .contact-item{ flex-direction:column; gap:4px; }
  .contact-value{ text-align:left; }
  .footer-inner{ flex-direction:column; gap:10px; }
  .footer-grid{ grid-template-columns:1fr; }
  .species-grid{ grid-template-columns:1fr; }
  .gallery-grid{ grid-template-columns:1fr; grid-auto-rows:220px; }
  .gallery-item-wide{ grid-column:span 1; }
  .method-block{ grid-template-columns:1fr; gap:8px; }
  .mission{ padding:64px 0 20px; }
  .achieve-band, .pi-spotlight, .affil-strip, .join-band{ padding:56px 0; }
  .page-hero{ padding:64px 0 48px; }
}

/* Small phone */
@media (max-width: 420px){
  .wrap{ padding:0 18px; }
  .eyebrow{ font-size:10.5px; letter-spacing:.08em; }
  .btn{ padding:12px 20px; font-size:13px; }
  .ui-logo{ width:26px; height:26px; }
  .cenmat-logo{ height:24px; }
  .brand-div{ display:none; }
  .stat-num{ font-size:28px; }
  .collab-card{ flex-direction:column; text-align:center; }
}

@media (prefers-reduced-motion: reduce){
  .sig-pulse{ animation:none; }
  .team-photo img{ transition:none; }
}