/* =========================================================
   MBNRG — Mobile Broadband Network Research Group
   Stylesheet
   ========================================================= */

:root{
  --ink:        #071A2C;
  --ink-soft:   #0A3B63;
  --paper:      #F5F7F9;
  --paper-raise:#FFFFFF;
  --line:       #E2E7EC;
  --text:       #16232F;
  --text-soft:  #48586B;
  --text-mute:  #8593A3;
  --signal:     #1F6FB2;
  --signal-dark:#0A3B63;
  --signal-tint:#E9F1F8;
  --pulse:      #0A3B63;
  --radius:     10px;
  --maxw:       1180px;
  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body:  'Inter', 'Segoe UI', sans-serif;
  --font-mono:  'JetBrains Mono', ui-monospace, monospace;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--text);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-wrap:break-word;
  word-wrap:break-word;
  word-break:break-word;
}
img{ max-width:100%; display:block; }
a{ color:var(--signal-dark); text-decoration:none; }
a:hover{ color:var(--pulse); }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--ink);
  line-height:1.15;
  margin:0 0 .5em 0;
  letter-spacing:-0.01em;
}
p{ margin:0 0 1em 0; }
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 28px; }
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--signal-dark);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:18px; height:1px;
  background:var(--signal-dark);
  display:inline-block;
}
:focus-visible{ outline:2px solid var(--signal); outline-offset:3px; }

/* ---------- Thin accent line (ETH-style single clean top bar) ---------- */
.accent-line{
  height:4px;
  background:linear-gradient(90deg, var(--ink) 0%, var(--signal-dark) 55%, var(--signal) 100%);
}

/* ---------- Header ---------- */
.site-header{
  background:var(--paper-raise);
  border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:50;
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:13px 28px;
  max-width:var(--maxw); margin:0 auto;
  gap:20px;
}
.brand{ display:flex; align-items:center; gap:14px; }
.brand-mark{
  width:44px; height:44px; border-radius:10px;
  background:var(--paper-raise);
  border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0; padding:5px;
}
.brand-mark img{ width:100%; height:100%; object-fit:contain; }
.iust-badge{
  width:34px; height:34px; border-radius:50%;
  background:#fff; border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0; padding:4px; margin-left:2px;
}
.iust-badge img{ width:100%; height:100%; object-fit:contain; }
.brand-text h1{
  font-size:17px; margin:0; letter-spacing:-.01em;
}
.brand-text span{
  display:block; font-size:12px; color:var(--text-mute); font-family:var(--font-mono);
}
nav.main-nav ul{ display:flex; gap:4px; flex-wrap:nowrap; }
nav.main-nav li{ flex-shrink:0; }
nav.main-nav a{
  color:var(--text-soft);
  font-weight:700;
  font-size:16px;
  padding:12px 16px;
  border-radius:7px;
  white-space:nowrap;
  transition:background .15s, color .15s;
}
nav.main-nav a:hover{ background:var(--signal-tint); color:var(--signal-dark); }
nav.main-nav a.active{ color:var(--signal-dark); background:var(--signal-tint); }

.lang-switch{
  display:flex; align-items:center; gap:9px;
  border:1.5px solid var(--signal); border-radius:24px;
  padding:7px 16px 7px 9px; flex-shrink:0;
  background:var(--signal-tint); transition:background .15s, transform .15s;
}
.lang-switch:hover{ background:var(--signal); transform:translateY(-1px); }
.lang-switch:hover .fa-text{ color:#fff; }
.lang-switch .flag-ir{ width:22px; height:22px; border-radius:5px; object-fit:cover; box-shadow:0 0 0 1px rgba(7,26,44,.12); flex-shrink:0; }
.lang-switch .fa-text{
  font-family:'Vazirmatn', var(--font-body); font-weight:700; font-size:15.5px;
  color:var(--signal-dark); line-height:1;
}
@media (max-width:900px){ .lang-switch{ order:3; } }
@media (max-width:480px){ .lang-switch .fa-text{ font-size:14px; } .lang-switch{ padding:6px 12px 6px 7px; } }
.nav-toggle{ display:none; background:none; border:none; cursor:pointer; padding:8px; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:24px; height:2px; background:var(--ink); position:relative; transition:.2s;
}
.nav-toggle span::before{ position:absolute; top:-7px; }
.nav-toggle span::after{ position:absolute; top:7px; }

@media (max-width:900px){
  nav.main-nav{
    position:absolute; top:100%; left:0; right:0;
    background:var(--paper-raise); border-bottom:1px solid var(--line);
    display:none; padding:10px 20px 18px;
  }
  nav.main-nav.open{ display:block; }
  nav.main-nav ul{ flex-direction:column; }
  .nav-toggle{ display:block; }
}

/* ---------- Hero ---------- */
.photo-banner{
  width:100%; line-height:0; background:var(--ink);
}
/* ---------- Hero carousel (full-width, uncropped) ---------- */
.hero-carousel{
  position:relative; width:100%;
  height:clamp(280px, 40vw, 520px);
  overflow:hidden; background:var(--ink);
}
.carousel-track{ position:absolute; inset:0; }
.carousel-slide{
  position:absolute; inset:0; opacity:0; transition:opacity .9s ease;
  display:flex; align-items:center; justify-content:center;
}
.carousel-slide.active{ opacity:1; }
.carousel-slide img{ width:100%; height:100%; object-fit:contain; display:block; }
.hero-cta{ display:flex; gap:12px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-weight:700; font-size:14.5px;
  padding:12px 20px; border-radius:8px;
  transition:transform .15s, background .15s, color .15s;
  border:1px solid transparent;
}
.btn-primary{ background:var(--signal); color:#FFFFFF !important; }
.btn-primary:hover{ background:#2E86C1; transform:translateY(-1px); }
.btn-ghost{ border-color:rgba(255,255,255,.35); color:#fff !important; }
.btn-ghost:hover{ background:rgba(255,255,255,.08); }
.btn-ghost-light{ border-color:rgba(255,255,255,.35); color:#fff !important; }
.btn-ghost-light:hover{ background:rgba(255,255,255,.08); }
.btn-outline{ border-color:var(--line); color:var(--ink) !important; }
.btn-outline:hover{ background:var(--signal-tint); border-color:var(--signal); }

.carousel-arrow{
  position:absolute; top:50%; transform:translateY(-50%); z-index:3;
  width:38px; height:38px; border-radius:50%; border:1px solid rgba(255,255,255,.4);
  background:rgba(7,26,44,.35); color:#fff; font-size:13px; cursor:pointer;
  display:flex; align-items:center; justify-content:center; transition:background .15s;
}
.carousel-arrow:hover{ background:rgba(7,26,44,.65); }
.carousel-arrow.prev{ left:20px; }
.carousel-arrow.next{ right:20px; }
.carousel-dots{
  position:absolute; bottom:18px; left:50%; transform:translateX(-50%); z-index:3;
  display:flex; gap:8px;
}
.carousel-dot{
  width:8px; height:8px; border-radius:50%; border:none; background:rgba(255,255,255,.4); cursor:pointer; padding:0;
}
.carousel-dot.active{ background:var(--signal); width:20px; border-radius:5px; transition:width .2s; }
@media (max-width:640px){
  .carousel-arrow{ display:none; }
  .hero-carousel{ height:280px; }
}

/* ---------- Stats strip ---------- */
.stats-strip{
  background:var(--paper-raise);
  border-bottom:1px solid var(--line);
}
.stats-strip .wrap{
  display:grid; grid-template-columns:repeat(4,1fr);
  padding:18px 28px;
}
.stat{ text-align:center; padding:0 10px; border-left:1px solid var(--line); }
.stat:first-child{ border-left:none; }
.stat .num{
  font-family:var(--font-display); font-size:32px; color:var(--ink); font-weight:700;
}
.stat .num span{ color:var(--signal-dark); }
.stat .label{ font-size:12.5px; color:var(--text-mute); font-family:var(--font-mono); text-transform:uppercase; letter-spacing:.06em; margin-top:2px; }
@media (max-width:760px){
  .stats-strip .wrap{ grid-template-columns:repeat(2,1fr); row-gap:20px; }
  .stat:nth-child(3){ border-left:none; }
}

/* ---------- Section shell ---------- */
section.block{ padding:64px 0; }
section.block.alt{ background:var(--paper-raise); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ max-width:680px; margin-bottom:36px; }
.section-head h2{ font-size:28px; }
.section-head p{ color:var(--text-soft); font-size:15.5px; }

/* ---------- Research cards ---------- */
.research-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.research-card{
  background:var(--paper-raise);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  transition:border-color .15s, transform .15s;
}
.research-card:hover{ border-color:var(--signal); transform:translateY(-3px); }
.research-card .icon{
  width:46px; height:46px; border-radius:9px; background:var(--signal-tint);
  display:flex; align-items:center; justify-content:center; margin-bottom:16px;
}
.research-card .icon img{ width:26px; height:26px; }
.research-card h3{ font-size:17px; margin-bottom:8px; }
.research-card p{ color:var(--text-soft); font-size:14px; margin-bottom:0; }
.research-card .tags{ margin-top:14px; display:flex; flex-wrap:wrap; gap:6px; }
.research-card .tags span{
  font-family:var(--font-mono); font-size:11px; color:var(--signal-dark);
  background:var(--signal-tint); padding:3px 8px; border-radius:20px;
}
@media (max-width:900px){ .research-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .research-grid{ grid-template-columns:1fr; } }

/* ---------- Quick links row ---------- */
.quicklinks{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.quicklink{
  display:flex; align-items:center; justify-content:space-between;
  background:var(--ink); color:#fff; border-radius:var(--radius);
  padding:20px 22px; font-weight:700; font-size:15px;
  transition:background .15s;
}
.quicklink:hover{ background:var(--signal-dark); color:#fff; }
.quicklink .arrow{ font-size:18px; }
@media (max-width:900px){ .quicklinks{ grid-template-columns:1fr; } }

/* ---------- Footer (compact) ---------- */
footer.site-footer{
  background:var(--ink); color:#93A2B5; padding:0 0 20px; margin-top:0;
}
.footer-compact{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap;
  gap:20px; padding:28px 28px 24px; border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{ display:flex; align-items:center; gap:16px; flex-wrap:wrap; }
.footer-logo-mbnrg{ height:34px; width:auto; }
.footer-logo-divider{ width:1px; height:26px; background:rgba(255,255,255,.18); }
.footer-logo-iust{ height:40px; width:auto; background:#fff; border-radius:7px; padding:3px 6px; }
.footer-affil{ display:flex; flex-direction:column; gap:2px; }
.footer-affil strong{ color:#fff; font-size:13.5px; }
.footer-affil span{ color:#93A2B5; font-size:12px; }
.footer-contact{ display:flex; align-items:center; gap:16px; flex-wrap:wrap; font-size:13px; }
.footer-contact a{ color:#93A2B5; font-weight:600; }
.footer-contact a:hover{ color:#fff; }
.footer-bottom{
  margin-top:16px; padding-top:0;
  text-align:center; font-size:12px; color:#6E7C8F;
}

/* ---------- Page header (interior pages) ---------- */
.page-hero{
  background:var(--ink); color:#fff; padding:52px 0 40px; position:relative; overflow:hidden;
}
.page-hero .wrap{ position:relative; }
.page-hero .eyebrow{ color:var(--signal); }
.page-hero .eyebrow::before{ background:var(--signal); }
.page-hero h2{ color:#fff; font-size:clamp(26px,3.6vw,38px); margin-bottom:8px; }
.page-hero p{ color:#B9C4D3; max-width:640px; font-size:15.5px; margin-bottom:0; }

/* ---------- Director / Head of Group (prominent) ---------- */
.director-hero{
  display:grid; grid-template-columns:180px 1fr; gap:27px;
  background:var(--paper-raise); border:1px solid var(--line); border-radius:16px;
  padding:27px; box-shadow:0 1px 3px rgba(10,30,50,.05);
}
.director-hero .photo-wrap{
  position:relative; border-radius:14px; overflow:hidden; width:180px; height:225px;
  box-shadow:0 12px 28px -12px rgba(10,42,67,.35);
}
.director-hero .photo-wrap img{ width:100%; height:100%; object-fit:cover; }
.director-hero .photo-wrap .badge{
  position:absolute; left:8px; bottom:8px; background:var(--ink);
  color:#fff; font-family:var(--font-mono); font-size:8px; padding:4px 8px; border-radius:20px;
}
.director-hero h3{ font-size:19.5px; margin-bottom:3px; }
.director-hero .role{ color:var(--signal-dark); font-family:var(--font-mono); font-size:10px; margin-bottom:12px; }
.director-hero .bio{ font-size:13.8px; color:var(--text-soft); max-width:820px; margin-bottom:14px; }
.director-hero .contact-line{ font-size:10.5px; color:var(--text-soft); margin-bottom:3px; }
.director-hero .contact-line a{ color:var(--signal-dark); font-weight:600; }
.profile-links{ display:flex; flex-wrap:wrap; gap:7.5px; margin-top:15px; }
.profile-links a{
  display:inline-flex; align-items:center; gap:6px;
  border:1px solid var(--line); border-radius:6px; padding:6px 10.5px;
  font-size:10px; font-weight:700; color:var(--ink); background:var(--paper);
  transition:border-color .15s, background .15s, color .15s;
}
.profile-links a:hover{ border-color:var(--signal); background:var(--signal-tint); color:var(--signal-dark); }
.profile-links .ic{
  width:15px; height:15px; border-radius:4px; background:var(--ink); color:#fff;
  display:flex; align-items:center; justify-content:center; font-size:7px; font-weight:800;
  font-family:var(--font-mono); flex-shrink:0;
}
.profile-links a.ic-scholar .ic{ background:#4285C6; }
.profile-links a.ic-linkedin .ic{ background:#0A66C2; }
.profile-links a.ic-orcid .ic{ background:#A6CE39; color:#0b3b0b; }
.profile-links a.ic-scopus .ic{ background:#E9711C; }
.profile-links a.ic-email .ic{ background:var(--signal-dark); }
@media (max-width:640px){ .director-hero{ grid-template-columns:1fr; } .director-hero .photo-wrap{ width:165px; height:206px; } }

/* ---------- PhD students: row cards (photo left, content right) ---------- */
.phd-rows{ display:flex; flex-direction:column; gap:18px; }
.phd-row{
  display:grid; grid-template-columns:112px 1fr; gap:22px;
  background:var(--paper-raise); border:1px solid var(--line); border-radius:14px;
  padding:20px 24px; box-shadow:0 2px 10px -4px rgba(10,30,50,.08);
  transition:box-shadow .15s, transform .15s;
}
.phd-row:hover{ box-shadow:0 10px 24px -10px rgba(10,30,50,.18); transform:translateY(-2px); }
.phd-row .fig{
  width:112px; height:112px; border-radius:12px; overflow:hidden; flex-shrink:0;
  display:block;
}
.phd-row .fig .avatar-fig{
  width:100%; height:100%; display:flex; align-items:center; justify-content:center;
  background:var(--signal-tint); color:var(--signal-dark); font-family:var(--font-display);
  font-weight:700; font-size:30px;
}
.phd-row .fig .avatar-photo{ width:100%; height:100%; object-fit:cover; display:block; }
.phd-row .fig.clickable{ cursor:pointer; }
.phd-row .fig.clickable:hover .avatar-fig{ background:var(--signal); color:#fff; }
.phd-row h4{ font-size:16.5px; margin-bottom:2px; }
.phd-row .tag{ font-family:var(--font-mono); font-size:11px; color:var(--signal-dark); display:block; margin-bottom:8px; }
.phd-row .bio{ font-size:13.8px; color:var(--text-soft); margin-bottom:10px; max-width:640px; }
.phd-row .row-links{ display:flex; gap:14px; flex-wrap:wrap; align-items:center; }
.phd-row .row-links a{ font-size:12.5px; font-weight:700; color:var(--signal-dark); display:inline-flex; align-items:center; gap:5px; }
@media (max-width:600px){ .phd-row{ grid-template-columns:78px 1fr; padding:16px; gap:14px; } .phd-row .fig{ width:78px; height:78px; } .phd-row .fig .avatar-fig{ font-size:20px; } }

/* ---------- MSc students: grid cards ---------- */
.msc-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.msc-card{
  background:var(--paper-raise); border:1px solid var(--line); border-radius:14px;
  padding:25px; text-align:left; box-shadow:0 2px 10px -4px rgba(10,30,50,.08);
  transition:box-shadow .15s, transform .15s;
}
.msc-card:hover{ box-shadow:0 10px 24px -10px rgba(10,30,50,.18); transform:translateY(-2px); }
.msc-card .fig{ width:96px; height:96px; border-radius:50%; overflow:hidden; margin-bottom:18px; display:block; }
.msc-card .fig .avatar-fig{
  width:100%; height:100%; display:flex; align-items:center; justify-content:center;
  background:var(--signal-tint); color:var(--signal-dark); font-family:var(--font-display); font-weight:700; font-size:28px;
}
.msc-card .fig .avatar-photo{ width:100%; height:100%; object-fit:cover; display:block; }
.msc-card .msc-email{ display:block; margin-top:10px; font-size:14px; color:var(--text-mute); word-break:break-all; }
.msc-card .msc-email:hover{ color:var(--signal-dark); }
.msc-card .fig.clickable{ cursor:pointer; }
.msc-card .fig.clickable:hover .avatar-fig{ background:var(--signal); color:#fff; }
.msc-card h4{ font-size:19px; margin-bottom:5px; }
.msc-card .title{ font-size:16.6px; color:var(--text-soft); margin-bottom:12px; min-height:43px; }
.msc-card .meta-row{ display:flex; justify-content:space-between; align-items:center; margin-top:10px; }
.msc-card .year{ font-family:var(--font-mono); font-size:14px; color:var(--signal-dark); }
.msc-card a.mail{ color:var(--text-mute); }
.msc-card a.mail:hover{ color:var(--signal-dark); }
@media (max-width:900px){ .msc-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .msc-grid{ grid-template-columns:1fr; } }

/* ---------- BSc students: compact cards ---------- */
.bsc-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.bsc-card{
  background:var(--paper-raise); border:1px solid var(--line); border-radius:12px;
  padding:18px; text-align:left; box-shadow:0 2px 8px -4px rgba(10,30,50,.06);
  transition:box-shadow .15s, transform .15s;
}
.bsc-card:hover{ box-shadow:0 8px 18px -8px rgba(10,30,50,.16); transform:translateY(-2px); }
.bsc-card .fig{ width:82px; height:82px; border-radius:50%; overflow:hidden; margin-bottom:12px; display:block; }
.bsc-card .fig .avatar-fig{
  width:100%; height:100%; display:flex; align-items:center; justify-content:center;
  background:var(--signal-tint); color:var(--signal-dark); font-family:var(--font-display); font-weight:700; font-size:23px;
}
.bsc-card .fig .avatar-photo{ width:100%; height:100%; object-fit:cover; display:block; }
.bsc-card .fig.clickable{ cursor:pointer; }
.bsc-card .fig.clickable:hover .avatar-fig{ background:var(--signal); color:#fff; }
.bsc-card h4{ font-size:17.5px; margin-bottom:4px; }
.bsc-card .title{ font-size:14.5px; color:var(--text-soft); margin-bottom:10px; line-height:1.4; }
.bsc-card .meta-row{ display:flex; justify-content:space-between; align-items:center; gap:8px; margin-top:8px; flex-wrap:wrap; }
.bsc-card .year{ font-family:var(--font-mono); font-size:13px; color:var(--signal-dark); }
.bsc-card .meta-row a{ font-size:13px; font-weight:700; }
@media (max-width:900px){ .bsc-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .bsc-grid{ grid-template-columns:1fr; } }

.alumni-toggle{
  display:inline-flex; align-items:center; gap:8px;
  background:none; border:1px solid var(--line); border-radius:8px;
  padding:10px 16px; font-family:var(--font-mono); font-size:13px;
  color:var(--ink); cursor:pointer; margin-bottom:18px;
}
.alumni-toggle:hover{ border-color:var(--signal); color:var(--signal-dark); }
.alumni-list{ display:none; }
.alumni-list.open{ display:block; }
.alumni-table{ width:100%; border-collapse:collapse; }
.alumni-table tr{ border-bottom:1px solid var(--line); }
.alumni-table td{ padding:12px 6px; font-size:14px; vertical-align:top; }
.alumni-table td.name{ font-weight:700; color:var(--ink); width:220px; }
.alumni-table td.detail{ color:var(--text-soft); }
.alumni-table td.detail .yrs{ font-family:var(--font-mono); font-size:12px; color:var(--signal-dark); }
.alumni-table td.detail a{
  display:inline-flex; align-items:center;
  background:var(--signal-tint); color:var(--signal-dark);
  border:1px solid var(--signal); border-radius:20px;
  padding:2px 10px; margin-inline-start:4px;
  font-size:12px; font-weight:700; text-decoration:none;
  white-space:nowrap;
}
.alumni-table td.detail a:hover{ background:var(--signal); color:#fff; }


/* ---------- Publications ---------- */
.pub-toolbar{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px;
  margin-bottom:30px; padding:20px 24px; background:var(--paper-raise); border:1px solid var(--line); border-radius:var(--radius);
}
.pub-toolbar .scholar{ display:flex; align-items:center; gap:12px; }
.pub-toolbar img{ width:32px; height:32px; }
.pub-list{ counter-reset:pub; }
.pub-item{
  display:flex; gap:16px; padding:16px 0; border-bottom:1px solid var(--line);
}
.pub-item::before{
  counter-increment:pub; content:counter(pub);
  font-family:var(--font-mono); color:var(--text-mute); font-size:13px; width:28px; flex-shrink:0; padding-top:2px;
}
.pub-item .body{ flex:1; font-size:14.5px; color:var(--text-soft); }
.pub-item .body strong{ color:var(--ink); }
.pub-item .links{ flex-shrink:0; display:flex; gap:8px; align-items:flex-start; padding-top:2px;}
.pub-item .links a{
  width:30px; height:30px; border-radius:7px; background:var(--signal-tint);
  display:flex; align-items:center; justify-content:center;
}
.pub-item .links img{ width:16px; height:16px; }
.pub-tabs{ display:flex; gap:10px; margin-bottom:22px; }

/* ---------- News & announcements ---------- */
.news-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.news-card{
  background:var(--paper-raise); border:1px solid var(--line); border-radius:12px;
  padding:22px; box-shadow:0 2px 10px -4px rgba(10,30,50,.06);
}
.news-card.compact{ padding:20px; }
.news-meta{ display:flex; align-items:center; gap:10px; margin-bottom:12px; }
.news-tag{
  font-family:var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.06em;
  padding:4px 9px; border-radius:20px; font-weight:700;
}
.news-tag.tag-pub{ background:var(--signal-tint); color:var(--signal-dark); }
.news-tag.tag-seminar{ background:#FDF0DA; color:#8A5A0A; }
.news-tag.tag-milestone{ background:#E7F6EC; color:#187A41; }
.news-date{ font-family:var(--font-mono); font-size:12px; color:var(--text-mute); }
.news-card h4{ font-size:15px; margin-bottom:8px; line-height:1.35; }
.news-card p{ font-size:13.5px; color:var(--text-soft); margin-bottom:12px; }
.news-card .news-link{ font-size:13px; font-weight:700; }
section.block.alt + section.block.alt{ border-top:none; }
@media (max-width:900px){ .news-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .news-grid{ grid-template-columns:1fr; } }

/* ---------- Compact homepage sections (IIP-style low scroll) ---------- */
.block-tight{ padding:40px 0 48px; }

/* ---------- Compact Head-of-Group bar (homepage) ---------- */
.director-bar{
  display:flex; align-items:center; gap:14px; flex-wrap:wrap;
  background:var(--paper-raise); border:1px solid var(--line); border-radius:10px;
  padding:14px 20px; margin:0 0 28px;
  box-shadow:0 2px 10px -4px rgba(10,30,50,.06);
}
.director-bar-photo{
  width:42px; height:42px; border-radius:50%; object-fit:cover; flex-shrink:0;
  border:2px solid var(--signal-tint);
}
.director-bar-text{
  display:flex; flex-direction:column; gap:2px;
  font-size:14.5px; color:var(--text); flex:1; min-width:200px;
}
.director-bar-label{
  font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.06em;
  color:var(--text-mute);
}
.director-bar-name{ font-size:16px; font-weight:700; color:var(--ink); }
.director-bar-affil{ font-size:12.5px; color:var(--text-soft); }
.director-bar-links{ display:flex; align-items:center; gap:16px; flex-shrink:0; }
.director-bar-links a{ font-size:12.5px; font-weight:600; color:var(--text-soft); }
.director-bar-links a:hover{ color:var(--signal-dark); }
@media (max-width:560px){
  .director-bar{ padding:14px 16px; }
  .director-bar-links{ gap:12px; width:100%; padding-top:8px; border-top:1px solid var(--line); }
}

/* ---------- Refined group description (homepage) ---------- */
.intro-text{ max-width:760px; margin:0 auto 8px; text-align:left; }
.intro-text p{
  font-size:17px; line-height:1.7; color:var(--text-soft);
  border-left:3px solid var(--signal); padding-left:18px;
}
.intro-text p strong{ color:var(--ink); }
.intro-text .hero-cta{ margin-top:22px; padding-left:21px; }
@media (max-width:560px){
  .intro-text p{ font-size:15.5px; padding-left:14px; }
  .intro-text .hero-cta{ padding-left:17px; }
}
.section-head-row{
  display:flex; align-items:baseline; justify-content:space-between; flex-wrap:wrap;
  gap:10px; margin-bottom:16px; padding-bottom:12px; border-bottom:1px solid var(--line);
}
.section-head-row .eyebrow{ margin-bottom:0; }
.see-all-link{ font-size:13px; font-weight:700; color:var(--signal-dark); flex-shrink:0; }
.news-list{ display:flex; flex-direction:column; }
.news-row{
  display:flex; align-items:center; gap:14px; padding:13px 4px;
  border-bottom:1px solid var(--line); transition:background .15s;
}
.news-row:last-child{ border-bottom:none; }
.news-row:hover{ background:var(--signal-tint); }
.news-row .news-tag{ flex-shrink:0; }
.news-row-title{
  flex:1; min-width:0; font-size:14px; color:var(--ink); font-weight:500;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.news-row .news-date{ flex-shrink:0; }
@media (max-width:600px){
  .news-row{ flex-wrap:wrap; }
  .news-row-title{ white-space:normal; order:3; flex-basis:100%; }
}

/* ---------- Publication action icons ---------- */
.pub-actions{ display:flex; gap:8px; flex-wrap:wrap; margin-top:8px; }
.pub-action{
  display:inline-flex; align-items:center; gap:6px;
  border:1px solid var(--line); background:var(--paper-raise);
  border-radius:20px; padding:5px 12px; font-size:12.5px; font-weight:600;
  color:var(--text-soft); cursor:pointer; transition:border-color .15s, color .15s, background .15s;
}
.pub-action:hover{ border-color:var(--signal); color:var(--signal-dark); background:var(--signal-tint); }
.pub-action .emoji{ font-size:13px; line-height:1; }

/* ---------- Modal (Abstract) ---------- */
.modal-overlay{
  position:fixed; inset:0; background:rgba(7,26,44,.62);
  display:none; align-items:center; justify-content:center; z-index:200; padding:20px;
}
.modal-overlay.open{ display:flex; }
.modal-box{
  background:var(--paper-raise); border-radius:14px; max-width:640px; width:100%;
  max-height:86vh; overflow-y:auto; padding:30px 32px; position:relative;
  box-shadow:0 30px 60px -20px rgba(7,26,44,.4);
}
.modal-close{
  position:absolute; top:16px; right:16px; width:32px; height:32px; border-radius:50%;
  border:1px solid var(--line); background:var(--paper); cursor:pointer; font-size:16px;
  color:var(--text-soft); display:flex; align-items:center; justify-content:center;
}
.modal-close:hover{ border-color:var(--signal); color:var(--signal-dark); }
.modal-box h3{ font-size:19px; margin-bottom:6px; padding-right:30px; }
.modal-box .modal-authors{ font-size:13.5px; color:var(--text-soft); margin-bottom:4px; }
.modal-box .modal-venue{ font-family:var(--font-mono); font-size:12px; color:var(--signal-dark); margin-bottom:18px; display:block; }
.modal-box .modal-section-label{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--text-mute); margin-bottom:6px; }
.modal-box .modal-abstract{ font-size:14px; line-height:1.65; color:var(--text-soft); margin-bottom:18px; }
.modal-box .modal-abstract.pending{ background:var(--paper); border:1px dashed var(--line); border-radius:8px; padding:14px 16px; }
.modal-box .modal-abstract a{ font-weight:700; }
.modal-keywords{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom:20px; }
.modal-keywords span{
  font-family:var(--font-mono); font-size:11px; color:var(--signal-dark); background:var(--signal-tint);
  padding:4px 10px; border-radius:20px;
}
.modal-actions{ display:flex; gap:10px; flex-wrap:wrap; align-items:center; }
.bibtex-box{
  background:var(--ink); color:#CFE0EE; font-family:var(--font-mono); font-size:12px;
  padding:14px 16px; border-radius:8px; white-space:pre-wrap; margin-bottom:14px; line-height:1.55;
}
.copy-bibtex-btn{
  display:inline-flex; align-items:center; gap:8px; background:var(--signal); color:#fff;
  border:none; border-radius:8px; padding:10px 16px; font-size:13px; font-weight:700; cursor:pointer;
}
.copy-bibtex-btn:hover{ background:#2E86C1; }
.copy-bibtex-btn.copied{ background:#1F9D55; }

/* ---------- Lightbox (Graphical abstract) ---------- */
.lightbox-box{
  background:var(--paper-raise); border-radius:14px; max-width:480px; width:100%;
  padding:28px; text-align:center; position:relative; box-shadow:0 30px 60px -20px rgba(7,26,44,.4);
}
.lightbox-box .fig-wrap{
  background:var(--signal-tint); border-radius:12px; padding:30px; margin-bottom:18px;
  display:flex; align-items:center; justify-content:center;
}
.lightbox-box .fig-wrap img{ width:120px; height:120px; }
.lightbox-box .lb-title{ font-size:15.5px; margin-bottom:8px; }
.lightbox-box .lb-summary{ font-size:13.8px; color:var(--text-soft); margin-bottom:10px; }
.lightbox-box .lb-note{ font-size:11.5px; color:var(--text-mute); font-style:italic; }
.pub-tab{
  font-family:var(--font-mono); font-size:13px; padding:9px 16px; border-radius:8px;
  border:1px solid var(--line); background:var(--paper-raise); cursor:pointer; color:var(--text-soft);
}
.pub-tab.active{ background:var(--ink); color:#fff; border-color:var(--ink); }
.pub-panel{ display:none; }
.pub-panel.active{ display:block; }

/* ---------- Seminars ---------- */
.seminar-item{
  background:var(--paper-raise); border:1px solid var(--line); border-left:3px solid var(--signal);
  border-radius:8px; padding:18px 20px; margin-bottom:14px;
}
.seminar-item p{ margin:0; font-size:14.5px; color:var(--text-soft); }
.seminar-item strong{ color:var(--ink); }

/* ---------- word cloud ---------- */
.topic-cloud{ display:flex; flex-wrap:wrap; gap:10px; }
.topic-cloud span{
  font-family:var(--font-mono); border:1px solid var(--line); border-radius:20px;
  padding:7px 14px; color:var(--text-soft); font-size:13px; background:var(--paper-raise);
}
.topic-cloud span.w1{ font-size:12px; }
.topic-cloud span.w2{ font-size:14px; }
.topic-cloud span.w3{ font-size:16px; color:var(--signal-dark); border-color:var(--signal); font-weight:700; }

/* utility */
.mt-40{ margin-top:40px; }
.text-center{ text-align:center; }