/* =========================================================
   NTUSlab — Neuroimaging & Therapeutic Ultrasound Laboratory
   Design system  ·  modern · scientific · tech
   ========================================================= */

:root{
  /* palette */
  --ink:#080c16;
  --ink-2:#0e1626;
  --ink-3:#141f33;
  --paper:#ffffff;
  --mist:#f4f7fb;
  --mist-2:#eaf0f8;
  --line:#e2e9f3;
  --line-strong:#cdd8e8;
  --text:#16202e;
  --text-soft:#3a4759;
  --muted:#65748c;
  --muted-2:#8a98ac;

  /* brand */
  --brand:#0aa3bd;        /* teal */
  --brand-deep:#077e93;
  --brand-2:#5a7bff;      /* indigo */
  --brand-3:#8b5cf6;      /* violet */
  --accent-warm:#ff7a59;
  --grad: linear-gradient(120deg,#0aa3bd 0%,#3f6dff 55%,#8b5cf6 100%);
  --grad-soft: linear-gradient(120deg,rgba(10,163,189,.14),rgba(90,123,255,.12));

  /* type */
  --f-display:"Space Grotesk", "Inter", system-ui, sans-serif;
  --f-body:"Inter", system-ui, -apple-system, sans-serif;
  --f-mono:"IBM Plex Mono", ui-monospace, monospace;

  /* shape */
  --r-sm:10px; --r:16px; --r-lg:24px; --r-xl:32px;
  --shadow-sm:0 1px 2px rgba(14,22,38,.06),0 2px 8px rgba(14,22,38,.05);
  --shadow:0 8px 30px rgba(14,22,38,.10);
  --shadow-lg:0 24px 60px rgba(14,22,38,.16);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--f-body);color:var(--text);
  background:var(--paper);line-height:1.6;-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(--f-display);font-weight:600;line-height:1.12;margin:0;letter-spacing:-.02em}
p{margin:0 0 1rem}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
.mono{font-family:var(--f-mono)}
.eyebrow{
  font-family:var(--f-mono);font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brand-deep);font-weight:500;display:inline-flex;align-items:center;gap:.6rem;margin-bottom:1rem;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--brand)}
.eyebrow.on-dark{color:#7fe6f3}
.eyebrow.on-dark::before{background:#7fe6f3}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  backdrop-filter:saturate(160%) blur(14px);
  background:rgba(255,255,255,.78);border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s, box-shadow .3s;
}
.site-header.scrolled{border-color:var(--line);box-shadow:var(--shadow-sm);background:rgba(255,255,255,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px;gap:1.2rem}
.brand{display:flex;align-items:center;gap:.7rem;font-family:var(--f-display);font-weight:700;letter-spacing:-.02em}
.brand .mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:var(--ink);color:#fff;position:relative;overflow:hidden;
}
.brand .mark svg{width:24px;height:24px}
.brand b{font-size:1.18rem;color:var(--ink);line-height:1}
.brand small{display:block;font-family:var(--f-mono);font-weight:400;font-size:.58rem;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:.35rem;list-style:none;margin:0;padding:0}
.nav-links a{
  font-size:.92rem;font-weight:500;color:var(--text-soft);padding:.5rem .8rem;border-radius:9px;
  transition:color .2s,background .2s;position:relative;
}
.nav-links a:hover{color:var(--ink);background:var(--mist)}
.nav-links a.active{color:var(--brand-deep)}
.nav-right{display:flex;align-items:center;gap:.6rem}
.lang-toggle{
  display:inline-flex;border:1px solid var(--line-strong);border-radius:999px;overflow:hidden;font-family:var(--f-mono);
  font-size:.72rem;font-weight:500;
}
.lang-toggle button{
  border:0;background:transparent;color:var(--muted);padding:.38rem .62rem;cursor:pointer;transition:.2s;letter-spacing:.05em;
}
.lang-toggle button.active{background:var(--ink);color:#fff}
.btn{
  display:inline-flex;align-items:center;gap:.5rem;font-weight:600;font-size:.92rem;
  padding:.72rem 1.3rem;border-radius:999px;cursor:pointer;border:1px solid transparent;transition:.25s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-outline-light{border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--ink)}
.btn .arr{transition:transform .25s}
.btn:hover .arr{transform:translateX(3px)}
.hamburger{display:none;background:none;border:0;cursor:pointer;padding:.4rem;width:42px;height:42px}
.hamburger span{display:block;width:22px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;isolation:isolate}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:
    radial-gradient(900px 500px at 78% -10%,rgba(90,123,255,.30),transparent 60%),
    radial-gradient(700px 500px at 10% 110%,rgba(10,163,189,.28),transparent 60%),
    var(--ink);
}
.hero-waves{position:absolute;inset:0;z-index:-1;opacity:.5}
.hero-inner{padding:clamp(4rem,9vw,8rem) 0 clamp(4rem,8vw,7rem);max-width:880px}
.hero h1{font-size:clamp(2.4rem,6vw,4.6rem);font-weight:700;letter-spacing:-.03em;margin-bottom:1.5rem}
.hero .lead{font-size:clamp(1.05rem,2.1vw,1.3rem);color:rgba(255,255,255,.74);max-width:620px;margin-bottom:2.4rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.9rem}
.hero-stats{display:flex;flex-wrap:wrap;gap:2.6rem;margin-top:3.6rem;padding-top:2.4rem;border-top:1px solid rgba(255,255,255,.12)}
.hero-stats .stat b{font-family:var(--f-display);font-size:2rem;display:block;line-height:1}
.hero-stats .stat span{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.55)}

/* page hero (inner pages) */
.page-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;isolation:isolate}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:radial-gradient(800px 460px at 85% -20%,rgba(90,123,255,.28),transparent 60%),
    radial-gradient(600px 420px at 5% 120%,rgba(10,163,189,.24),transparent 60%),var(--ink);
}
.page-hero .hero-waves{opacity:.4}
.page-hero-inner{padding:clamp(3.2rem,7vw,5.5rem) 0 clamp(2.6rem,5vw,4rem);max-width:820px}
.page-hero h1{font-size:clamp(2rem,5vw,3.4rem);margin-bottom:1.1rem}
.page-hero p{color:rgba(255,255,255,.72);font-size:1.1rem;max-width:640px;margin:0}
.breadcrumbs{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.5);margin-bottom:1.4rem;display:flex;gap:.5rem;align-items:center}
.breadcrumbs a:hover{color:#7fe6f3}

/* ---------- sections ---------- */
section{position:relative}
.section{padding:clamp(3.6rem,7vw,6rem) 0}
.section.tight{padding:clamp(2.6rem,5vw,4rem) 0}
.section.mist{background:var(--mist)}
.section.ink{background:var(--ink);color:#fff}
.section-head{max-width:720px;margin-bottom:3rem}
.section-head.center{margin-inline:auto;text-align:center}
.section-head h2{font-size:clamp(1.8rem,3.6vw,2.7rem);margin-bottom:1rem}
.section-head p{color:var(--muted);font-size:1.08rem;margin:0}
.section.ink .section-head p{color:rgba(255,255,255,.7)}
.lead-text{font-size:1.18rem;color:var(--text-soft);max-width:760px}

/* ---------- generic grids ---------- */
.grid{display:grid;gap:1.4rem}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}

/* ---------- cards ---------- */
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.8rem;
  transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .ico{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:1.2rem;
  background:var(--grad-soft);color:var(--brand-deep);
}
.card .ico svg{width:26px;height:26px}
.card h3{font-size:1.25rem;margin-bottom:.6rem}
.card p{color:var(--muted);font-size:.97rem;margin:0}
.card .num{font-family:var(--f-mono);font-size:.8rem;color:var(--brand);letter-spacing:.1em;margin-bottom:.8rem;display:block}

/* research feature rows */
.feature{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.feature.flip .feature-media{order:2}
.feature-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:var(--mist)}
.feature-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.feature h3{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:1rem}
.feature p{color:var(--text-soft)}
.feature .tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.4rem}
.tag{
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.04em;padding:.35rem .7rem;border-radius:999px;
  background:var(--mist-2);color:var(--text-soft);border:1px solid var(--line)
}
.section.ink .tag{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:rgba(255,255,255,.8)}

/* link list */
.ref-link{display:inline-flex;align-items:center;gap:.4rem;font-family:var(--f-mono);font-size:.82rem;color:var(--brand-deep);font-weight:500;margin-top:.4rem}
.ref-link:hover{text-decoration:underline}

/* ---------- team ---------- */
.team-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.5rem}
.member{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s;display:flex;flex-direction:column;
}
.member:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.member .photo{aspect-ratio:1;overflow:hidden;background:var(--ink-2);position:relative}
.member .photo img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.02);transition:filter .5s,transform .6s var(--ease)}
.member:hover .photo img{filter:grayscale(0);transform:scale(1.04)}
.member .avatar-fallback{width:100%;height:100%;display:grid;place-items:center;font-family:var(--f-display);font-weight:600;font-size:2.6rem;color:#fff;background:var(--grad)}
.member .body{padding:1.2rem 1.3rem 1.5rem;display:flex;flex-direction:column;flex:1}
.member .role{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-deep);margin-bottom:.4rem}
.member h3{font-size:1.12rem;margin-bottom:.6rem}
.member .bio{color:var(--muted);font-size:.86rem;line-height:1.55;margin:0 0 1rem}
.member .links{margin-top:auto;display:flex;gap:.5rem}
.member .links a{
  width:32px;height:32px;border-radius:8px;display:grid;place-items:center;border:1px solid var(--line);
  color:var(--muted);transition:.2s
}
.member .links a:hover{background:#0a66c2;border-color:#0a66c2;color:#fff}
.member .links a svg{width:16px;height:16px}
.member.lead-card{grid-column:span 1}

/* ---------- facilities ---------- */
.facility-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.4rem}
.facility{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s
}
.facility:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.facility .fimg{aspect-ratio:16/10;background:var(--mist);overflow:hidden;display:grid;place-items:center;padding:1rem}
.facility .fimg img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.facility .fbody{padding:1.3rem 1.4rem 1.6rem;display:flex;flex-direction:column;flex:1}
.facility .ftag{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.08em;color:var(--brand-deep);text-transform:uppercase;margin-bottom:.5rem}
.facility h3{font-size:1.1rem;margin-bottom:.5rem}
.facility p{color:var(--muted);font-size:.9rem;margin:0 0 1rem}
.facility .ref-link{margin-top:auto}

/* ---------- news / posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.6rem}
.post{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s
}
.post:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.post .pimg{aspect-ratio:16/9;overflow:hidden}
.post .pimg img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.post:hover .pimg img{transform:scale(1.05)}
.post .pbody{padding:1.4rem 1.5rem 1.7rem;display:flex;flex-direction:column;flex:1}
.post .pdate{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;color:var(--muted-2);text-transform:uppercase;margin-bottom:.7rem;display:flex;gap:.6rem;align-items:center}
.post .pcat{color:var(--brand-deep)}
.post h3{font-size:1.2rem;margin-bottom:.7rem;line-height:1.25}
.post p{color:var(--muted);font-size:.92rem;margin:0 0 1.1rem}
.post .ref-link{margin-top:auto}

/* ---------- publications ---------- */
.pub-tabs{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2.4rem}
.pub-tab{
  font-family:var(--f-mono);font-size:.82rem;padding:.5rem 1rem;border-radius:999px;border:1px solid var(--line-strong);
  background:#fff;color:var(--text-soft);cursor:pointer;transition:.2s
}
.pub-tab:hover{border-color:var(--ink)}
.pub-tab.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.pub-list{display:flex;flex-direction:column;gap:1rem}
.pub{
  display:grid;grid-template-columns:auto 1fr auto;gap:1.4rem;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.4rem 1.6rem;transition:.25s var(--ease)
}
.pub:hover{border-color:var(--brand);box-shadow:var(--shadow);transform:translateX(4px)}
.pub .pub-year{font-family:var(--f-mono);font-size:.78rem;color:var(--brand-deep);font-weight:500;white-space:nowrap}
.pub .pub-main h3{font-size:1.05rem;line-height:1.35;margin-bottom:.4rem}
.pub .pub-journal{font-style:italic;color:var(--brand-deep);font-size:.9rem;margin-bottom:.3rem}
.pub .pub-authors{color:var(--muted);font-size:.84rem;margin:0}
.pub .pub-cta{flex:none}
.pub .pub-cta a{display:inline-flex;align-items:center;gap:.4rem;font-family:var(--f-mono);font-size:.78rem;color:var(--ink);border:1px solid var(--line-strong);padding:.5rem .9rem;border-radius:999px;transition:.2s;white-space:nowrap}
.pub .pub-cta a:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- projects ---------- */
.project-hero-card{
  display:grid;grid-template-columns:1.1fr .9fr;gap:0;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)
}
.project-hero-card .phc-body{padding:clamp(2rem,4vw,3.2rem)}
.project-hero-card .phc-media{background:var(--mist);overflow:hidden}
.project-hero-card .phc-media img{width:100%;height:100%;object-fit:cover}
.status-pill{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;padding:.4rem .8rem;border-radius:999px;font-weight:500}
.status-pill.active{background:rgba(10,163,189,.12);color:var(--brand-deep)}
.status-pill.done{background:rgba(34,197,94,.13);color:#15803d}
.status-pill.upcoming{background:rgba(139,92,246,.13);color:#7c3aed}
.status-pill .dot{width:7px;height:7px;border-radius:50%;background:currentColor}
.status-pill.active .dot{animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}

.meta-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1.4rem;margin:2rem 0}
.meta-grid .mi b{font-family:var(--f-display);font-size:1.5rem;display:block}
.meta-grid .mi span{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

.timeline{position:relative;margin-top:2rem;padding-left:0}
.timeline::before{content:"";position:absolute;left:15px;top:8px;bottom:8px;width:2px;background:var(--line-strong)}
.tl-item{position:relative;padding:0 0 2rem 3rem}
.tl-item::before{content:"";position:absolute;left:8px;top:4px;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid var(--brand)}
.tl-item.done::before{background:var(--brand);}
.tl-item .tl-phase{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-deep);margin-bottom:.3rem}
.tl-item h4{font-family:var(--f-display);font-size:1.15rem;margin-bottom:.4rem}
.tl-item p{color:var(--muted);font-size:.94rem;margin:0}

/* prose */
.prose{max-width:760px}
.prose p{color:var(--text-soft);font-size:1.06rem;margin-bottom:1.3rem}
.prose h2{font-size:1.7rem;margin:2.4rem 0 1rem}
.prose h3{font-size:1.3rem;margin:1.8rem 0 .8rem}
.prose ul{color:var(--text-soft);padding-left:1.2rem;margin-bottom:1.3rem}
.prose li{margin-bottom:.5rem}
.callout{background:var(--grad-soft);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:var(--r);padding:1.4rem 1.6rem;margin:1.6rem 0}
.callout p{margin:0;color:var(--text)}

/* CTA band */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--r-xl);padding:clamp(2.4rem,5vw,4rem);position:relative;overflow:hidden;text-align:center}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% -40%,rgba(90,123,255,.3),transparent 60%);z-index:0}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{font-size:clamp(1.7rem,3.5vw,2.6rem);margin-bottom:1rem}
.cta-band p{color:rgba(255,255,255,.72);max-width:560px;margin:0 auto 2rem}

/* contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:3rem;align-items:start}
.contact-info .ci-item{display:flex;gap:1rem;padding:1.3rem 0;border-bottom:1px solid var(--line)}
.contact-info .ci-item:last-child{border-bottom:0}
.contact-info .ci-ico{width:44px;height:44px;border-radius:12px;background:var(--grad-soft);color:var(--brand-deep);display:grid;place-items:center;flex:none}
.contact-info .ci-ico svg{width:20px;height:20px}
.contact-info h4{font-family:var(--f-display);font-size:1rem;margin-bottom:.2rem}
.contact-info p,.contact-info a{color:var(--muted);font-size:.94rem;margin:0}
.contact-info a:hover{color:var(--brand-deep)}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:2rem;box-shadow:var(--shadow-sm)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{margin-bottom:1.1rem;display:flex;flex-direction:column}
.field label{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--text-soft);margin-bottom:.45rem}
.field input,.field textarea{
  font-family:var(--f-body);font-size:.96rem;padding:.8rem .95rem;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  background:var(--mist);transition:.2s;color:var(--text)
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(10,163,189,.12)}
.field textarea{resize:vertical;min-height:130px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:4rem 0 2rem;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2.5rem;padding-bottom:3rem;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .brand b{color:#fff}
.footer-brand p{color:rgba(255,255,255,.55);font-size:.92rem;margin-top:1rem;max-width:300px}
.footer-col h5{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.5);margin:0 0 1.1rem}
.footer-col a{display:block;color:rgba(255,255,255,.72);font-size:.92rem;padding:.3rem 0;transition:.2s}
.footer-col a:hover{color:#7fe6f3;transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;padding-top:2rem;font-size:.84rem;color:rgba(255,255,255,.45)}
.footer-bottom .mono{font-size:.78rem;letter-spacing:.04em}

/* reveal animation */
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
[data-reveal].in{opacity:1;transform:none}
[data-reveal][data-delay="1"]{transition-delay:.08s}
[data-reveal][data-delay="2"]{transition-delay:.16s}
[data-reveal][data-delay="3"]{transition-delay:.24s}
[data-reveal][data-delay="4"]{transition-delay:.32s}

/* i18n helper */
[data-es]{display:revert}
html[lang="en"] .only-es{display:none}
html[lang="es"] .only-en{display:none}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .feature,.feature.flip{grid-template-columns:1fr;gap:1.6rem}
  .feature.flip .feature-media{order:0}
  .project-hero-card{grid-template-columns:1fr}
  .project-hero-card .phc-media{min-height:240px;order:-1}
  .contact-grid{grid-template-columns:1fr;gap:2rem}
  .footer-top{grid-template-columns:1fr 1fr;gap:2rem}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .g-3{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .nav-links{
    position:fixed;inset:74px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
    padding:1rem 1.2rem 1.6rem;transform:translateY(-120%);transition:transform .35s var(--ease);box-shadow:var(--shadow);
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:.85rem .6rem;border-radius:8px;font-size:1rem}
  .hamburger{display:block}
  .nav .btn-primary{display:none}
  .pub{grid-template-columns:1fr;gap:.8rem;text-align:left}
  .pub .pub-cta{justify-self:start}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .hero-stats{gap:1.8rem}
  .form .row{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
}

/* ---------- figure gallery (research) ---------- */
.fig-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem;margin-top:1.6rem}
.fig-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;
}
.fig-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand)}
.fig-card .fig-img{aspect-ratio:4/3;background:var(--mist);display:grid;place-items:center;padding:.6rem}
.fig-card .fig-img img{width:100%;height:100%;object-fit:contain}
.fig-card .fig-cap{padding:.7rem .85rem;display:flex;align-items:center;justify-content:space-between;gap:.5rem;border-top:1px solid var(--line)}
.fig-card .fig-cap span{font-family:var(--f-mono);font-size:.7rem;color:var(--muted);letter-spacing:.04em;line-height:1.3}
.fig-card .fig-cap .ext{color:var(--brand-deep);flex:none}
.section.ink .fig-card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
.section.ink .fig-card .fig-img{background:rgba(255,255,255,.06)}

/* research figure media: do not crop scientific figures */
.feature-media.contain{background:#fff;display:grid;place-items:center;padding:1.2rem}
.feature-media.contain img{aspect-ratio:auto;width:100%;height:auto;max-height:420px;object-fit:contain}

/* ---------- collaborating centers map ---------- */
.centers-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:2.5rem;align-items:center}
.map-frame{position:relative;background:var(--mist);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.4rem;overflow:hidden}
.map-frame svg{width:100%;height:auto;display:block;overflow:visible}
.map-frame .spain-path{fill:#e7eef8;stroke:var(--line-strong);stroke-width:1}
.map-pin{cursor:default}
.map-pin .pin-dot{fill:var(--brand)}
.map-pin .pin-ring{fill:none;stroke:var(--brand);stroke-width:2;opacity:.55;transform-origin:center;animation:ringpulse 2.6s ease-out infinite}
.map-pin.home .pin-dot{fill:var(--brand-3)}
.map-pin.home .pin-ring{stroke:var(--brand-3)}
.map-pin text{font-family:var(--f-mono);font-size:9px;fill:var(--text-soft);font-weight:500}
@keyframes ringpulse{0%{r:5;opacity:.6}100%{r:16;opacity:0}}
.center-list{display:flex;flex-direction:column;gap:.55rem}
.center-list .ci{display:flex;gap:.8rem;align-items:flex-start;padding:.7rem .9rem;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);transition:.2s}
.center-list .ci:hover{border-color:var(--brand);transform:translateX(3px)}
.center-list .ci .cdot{width:9px;height:9px;border-radius:50%;background:var(--brand);margin-top:6px;flex:none}
.center-list .ci.home .cdot{background:var(--brand-3)}
.center-list .ci b{font-family:var(--f-display);font-size:.92rem;display:block;line-height:1.2}
.center-list .ci span{font-family:var(--f-mono);font-size:.72rem;color:var(--muted)}

/* ---------- funding band ---------- */
.funding{background:var(--mist);border-top:1px solid var(--line)}
.funding-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:2.5rem;align-items:center}
.funding h3{font-size:1.3rem;margin-bottom:.7rem}
.funding p{color:var(--muted);font-size:.95rem;margin:0 0 .6rem}
.funding .grant-ref{font-family:var(--f-mono);font-size:.8rem;color:var(--text-soft);background:#fff;border:1px solid var(--line);border-radius:999px;padding:.35rem .8rem;display:inline-block;margin-top:.4rem}
.funding-logos{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:flex-end}
.gov-logo{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:.9rem 1.1rem;display:flex;flex-direction:column;gap:.25rem;min-width:150px}
.gov-logo .gl-flag{display:flex;height:6px;border-radius:2px;overflow:hidden;width:46px;margin-bottom:.3rem}
.gov-logo .gl-flag i{flex:1}
.gov-logo .gl-flag i:nth-child(1){background:#c60b1e}.gov-logo .gl-flag i:nth-child(2){background:#ffc400;flex:2}.gov-logo .gl-flag i:nth-child(3){background:#c60b1e}
.gov-logo b{font-family:var(--f-display);font-size:.78rem;line-height:1.25;color:var(--text)}
.gov-logo span{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.04em;color:var(--muted);text-transform:uppercase}
@media(max-width:820px){
  .centers-wrap{grid-template-columns:1fr;gap:1.6rem}
  .funding-inner{grid-template-columns:1fr;gap:1.4rem}
  .funding-logos{justify-content:flex-start}
}

/* ---------- tools landing ---------- */
.tool-card{position:relative}
.tool-card .ico{width:54px;height:54px}
.tool-card .badge{position:absolute;top:1.2rem;right:1.2rem;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;padding:.3rem .6rem;border-radius:999px}
.tool-card .badge.live{background:rgba(10,163,189,.13);color:var(--brand-deep)}
.tool-card .badge.soon{background:var(--mist-2);color:var(--muted)}
.tool-card.disabled{opacity:.7;pointer-events:none}
.tool-card .open{margin-top:1.2rem;display:inline-flex;align-items:center;gap:.4rem;font-family:var(--f-mono);font-size:.8rem;color:var(--brand-deep);font-weight:500}

/* ---------- calculator tool ---------- */
.tool-layout{display:grid;grid-template-columns:380px 1fr;gap:2rem;align-items:start}
.tool-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:1.6rem;position:sticky;top:90px}
.tool-panel h3{font-size:1rem;margin:0 0 1.2rem;font-family:var(--f-display)}
.tool-panel h3.sub{margin-top:1.6rem;padding-top:1.2rem;border-top:1px solid var(--line)}
.tfield{margin-bottom:1rem}
.tfield label{display:block;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.04em;color:var(--text-soft);margin-bottom:.4rem;text-transform:uppercase}
.tfield .hint{font-family:var(--f-body);font-size:.72rem;color:var(--muted-2);text-transform:none;letter-spacing:0;margin-left:.3rem}
.tfield input,.tfield select{
  width:100%;font-family:var(--f-mono);font-size:.92rem;padding:.6rem .7rem;border:1px solid var(--line-strong);
  border-radius:var(--r-sm);background:var(--mist);color:var(--text);transition:.2s}
.tfield input:focus,.tfield select:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(10,163,189,.12)}
.inline2{display:grid;grid-template-columns:1fr 92px;gap:.5rem}
.seg{display:flex;background:var(--mist);border:1px solid var(--line-strong);border-radius:999px;padding:3px;gap:2px}
.seg button{flex:1;border:0;background:transparent;font-family:var(--f-mono);font-size:.74rem;padding:.45rem .3rem;border-radius:999px;cursor:pointer;color:var(--muted);transition:.2s;white-space:nowrap}
.seg button.active{background:var(--ink);color:#fff}

.out-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem;margin-bottom:1.6rem}
.out-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.1rem 1.2rem}
.out-card .ok{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:.5rem;display:block}
.out-card .ov{font-family:var(--f-display);font-size:1.7rem;line-height:1;letter-spacing:-.02em}
.out-card .ov small{font-size:.85rem;color:var(--muted);font-family:var(--f-mono);margin-left:.2rem;letter-spacing:0}
.out-card.accent{background:var(--ink);color:#fff;border-color:var(--ink)}
.out-card.accent .ok{color:rgba(255,255,255,.55)}
.out-card.warn{border-color:#f0b429;background:#fffaf0}

.viz-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:1.6rem;margin-bottom:1.6rem}
.viz-card h3{font-size:1rem;margin:0 0 .3rem;font-family:var(--f-display)}
.viz-card .vsub{font-size:.84rem;color:var(--muted);margin:0 0 1.2rem}
.viz-card svg{width:100%;height:auto;display:block}

.lib-table{width:100%;border-collapse:collapse;font-size:.84rem}
.lib-table th,.lib-table td{text-align:left;padding:.7rem .6rem;border-bottom:1px solid var(--line)}
.lib-table th{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:500}
.lib-table td{font-family:var(--f-mono);color:var(--text-soft);white-space:nowrap}
.lib-table td.study{font-family:var(--f-body);white-space:normal;color:var(--text);min-width:180px}
.lib-table tr:hover td{background:var(--mist)}
.lib-table .loadbtn{font-family:var(--f-mono);font-size:.72rem;border:1px solid var(--line-strong);background:#fff;border-radius:999px;padding:.35rem .8rem;cursor:pointer;transition:.2s;color:var(--ink)}
.lib-table .loadbtn:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff}
.disclaimer{font-size:.82rem;color:var(--muted);background:var(--mist);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:var(--r-sm);padding:.9rem 1.1rem;margin-top:1.2rem}

/* sliders */
.slider-row{display:flex;flex-direction:column;gap:.5rem}
.slider-row .sr-top{display:flex;align-items:center;justify-content:space-between;gap:.6rem}
.slider-row .sr-val{font-family:var(--f-mono);font-size:.92rem;background:var(--mist);border:1px solid var(--line-strong);border-radius:var(--r-sm);padding:.35rem .55rem;width:96px;text-align:right;color:var(--text)}
.slider-row .sr-val:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(10,163,189,.12)}
input[type=range].rng{-webkit-appearance:none;appearance:none;width:100%;height:5px;border-radius:999px;background:linear-gradient(90deg,var(--brand) 0%,var(--brand) var(--p,50%),var(--mist-2) var(--p,50%),var(--mist-2) 100%);outline:none;cursor:pointer}
input[type=range].rng::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:#fff;border:2px solid var(--brand);box-shadow:0 2px 6px rgba(10,163,189,.4);transition:transform .15s,box-shadow .15s}
input[type=range].rng::-webkit-slider-thumb:hover{transform:scale(1.18);box-shadow:0 3px 10px rgba(10,163,189,.5)}
input[type=range].rng::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#fff;border:2px solid var(--brand);cursor:pointer}

/* output value flash on change */
.out-card .ov{transition:color .25s}
.out-card.flash .ov{animation:flashv .5s ease}
@keyframes flashv{0%{color:var(--brand)}100%{color:inherit}}

/* gauges */
.gauge{margin-top:.4rem}
.gauge .gl{display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.04em;color:var(--muted);margin-bottom:.3rem}
.gauge .gbar{position:relative;height:8px;border-radius:999px;background:var(--mist-2);overflow:hidden}
.gauge .gfill{position:absolute;inset:0 auto 0 0;width:0;border-radius:999px;background:var(--grad);transition:width .35s var(--ease)}
.gauge .gmark{position:absolute;top:-3px;bottom:-3px;width:2px;background:var(--accent-warm);opacity:.8}
.out-card.accent .gauge .gbar{background:rgba(255,255,255,.15)}

/* viz polish */
.viz-card{position:relative;overflow:hidden}
.viz-card .vchip{position:absolute;top:1.3rem;right:1.4rem;font-family:var(--f-mono);font-size:.72rem;color:var(--brand-deep);background:var(--grad-soft);border:1px solid var(--line);padding:.3rem .65rem;border-radius:999px}
.focal-wrap{display:grid;grid-template-columns:1fr;gap:0}
#focalCanvas{width:100%;height:auto;display:block;border-radius:var(--r);background:#0a0f1c}
.viz-legend{display:flex;gap:1.2rem;flex-wrap:wrap;margin-top:.9rem;font-family:var(--f-mono);font-size:.72rem;color:var(--muted)}
.viz-legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:.4rem;vertical-align:middle}

/* carrier wave */
#carrierSvg{width:100%;height:70px;display:block}

@media(max-width:900px){
  .tool-layout{grid-template-columns:1fr}
  .tool-panel{position:static}
}

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