:root {
  --navy: #0a1f3c;
  --deep: #122a50;
  --blue: #1a4a8a;
  --sky: #2e7bc4;
  --accent: #4ab3e8;
  --teal: #0f7b8c;
  --light: #e8f4fb;
  --muted: #8faac0;
  --white: #ffffff;
  --off-white: #f4f8fc;
  --text: #1a2e42;
  --text-muted: #5a7a9a;
  --border: rgba(46,123,196,0.18);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Source Sans 3',sans-serif;color:var(--text);background:var(--white)}

/* NAV */
nav{position:fixed;top:0;width:100%;z-index:100;background:rgba(10,31,60,0.97);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:space-between;padding:0 60px;height:80px;border-bottom:1px solid rgba(74,179,232,0.2);transition:box-shadow .3s}
nav.scrolled{box-shadow:0 4px 32px rgba(0,0,0,.35)}
.nav-logo{display:flex;align-items:center;gap:18px;text-decoration:none}
/* ===== Logo Icone ===== */
.logo-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--sky),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center;font-family:'Playfair Display',serif;font-size:15px;font-weight:700;color:white;flex-shrink:0}
.nav-logo-img{width:80px;height:60px;border-radius:10px;object-fit:cover;flex-shrink:0;background:rgba(255,255,255,0.06)}
/* ===== Logo Lab Name Font Size ===== */
.logo-text{font-family:'Playfair Display',serif;font-size:16px;font-weight:600;color:white;line-height:1.2}
/* ===== Institute Name Below Logo ===== */
.logo-sub{font-size:14px;color:var(--accent);font-weight:300;letter-spacing:1px;text-transform:uppercase}
nav ul{list-style:none;display:flex;gap:26px}
nav ul a{color:rgba(255,255,255,.75);text-decoration:none;font-size:14px;letter-spacing:.5px;text-transform:uppercase;font-weight:400;transition:color .2s;padding:4px 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
nav ul a:hover{color:var(--accent);border-color:var(--accent)}
.hamburger{display:none;background:none;border:none;color:white;font-size:22px;cursor:pointer;padding:4px}

/* HERO */
.hero{min-height:100vh;background:linear-gradient(165deg,rgba(10,31,60,.97) 0%,rgba(18,42,80,.88) 50%,rgba(15,100,120,.72) 100%),url('https://images.unsplash.com/photo-1504608524841-42584120d693?w=1800&q=80') center/cover no-repeat;display:flex;align-items:center;padding:100px 60px 80px;position:relative;overflow:hidden}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:120px;background:linear-gradient(to bottom,transparent,var(--white));pointer-events:none}
.hero-content{max-width:780px;z-index:1;animation:fadeUp .9s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:translateY(0)}}
.hero-badge{display:inline-block;background:rgba(74,179,232,.12);border:1px solid rgba(74,179,232,.4);color:var(--accent);font-size:11px;letter-spacing:2px;text-transform:uppercase;padding:6px 16px;border-radius:40px;margin-bottom:22px}
.hero h1{font-family:'Playfair Display',serif;font-size:58px;line-height:1.1;color:white;font-weight:700;margin-bottom:18px}
.hero h1 span{color:var(--accent)}
.hero-subtitle{font-size:17px;color:rgba(255,255,255,.7);font-weight:300;line-height:1.75;margin-bottom:36px;max-width:600px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{background:var(--sky);color:white;padding:12px 26px;border-radius:6px;text-decoration:none;font-size:13px;font-weight:600;transition:background .2s,transform .15s;display:inline-block;border:none;cursor:pointer}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px)}
.btn-secondary{background:transparent;color:var(--sky);padding:12px 26px;border-radius:6px;text-decoration:none;font-size:13px;font-weight:600;border:1.5px solid var(--sky);transition:background .2s,color .2s;display:inline-block}
.btn-secondary:hover{background:var(--sky);color:white}
.btn-outline{border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.85);padding:12px 26px;border-radius:6px;text-decoration:none;font-size:13px;font-weight:400;transition:border-color .2s,color .2s;display:inline-block}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.hero-scroll{position:absolute;bottom:130px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.35);font-size:22px;animation:bounce 2s infinite;z-index:1;cursor:pointer}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(9px)}}

/* STATS BAR */
.stats-bar{background:var(--off-white);border-bottom:1px solid var(--border);display:flex;justify-content:center;flex-wrap:wrap}
.stat-item{flex:1;min-width:120px;max-width:220px;text-align:center;padding:28px 16px;border-right:1px solid var(--border)}
.stat-item:last-child{border-right:none}
.stat-num{font-family:'Playfair Display',serif;font-size:34px;font-weight:700;color:var(--blue)}
.stat-label{font-size:11px;color:var(--text-muted);letter-spacing:.5px;text-transform:uppercase;margin-top:4px}

/* SECTIONS */
section{padding:50px 30px}
.alt-bg{background:var(--off-white)}
.section-label{font-size:8px;letter-spacing:3px;text-transform:uppercase;color:var(--sky);font-weight:600;margin-bottom:10px}
.section-title{font-family:'Playfair Display',serif;font-size:30px;font-weight:700;color:var(--navy);line-height:1.2}
.section-divider{width:40px;height:3px;background:var(--accent);margin:16px 0 40px;border-radius:2px}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.about-text p,.about-text div{font-size:16px;line-height:1.85;color:var(--text-muted);font-weight:300}
.about-text strong{color:var(--text);font-weight:600}
.about-text em{font-style:italic;color:var(--sky)}
.pi-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.pi-links a{background:var(--light);color:var(--sky);font-size:12px;padding:7px 16px;border-radius:20px;text-decoration:none;font-weight:600;border:1px solid var(--border);transition:all .2s}
.pi-links a:hover{background:var(--sky);color:white;border-color:var(--sky)}
.prof-card{background:var(--navy);border-radius:16px;padding:36px 30px;color:white}
.prof-photo-wrap{margin-bottom:20px}
.prof-avatar{width:80px;height:80px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:'Playfair Display',serif;font-size:26px;font-weight:700;color:white;background:linear-gradient(135deg,var(--sky),var(--teal))}
.prof-photo{width:80px;height:80px;border-radius:50%;object-fit:cover;border:3px solid rgba(74,179,232,.4)}
.prof-name{font-family:'Playfair Display',serif;font-size:22px;font-weight:700;margin-bottom:4px}
.prof-title-text{font-size:13px;color:var(--accent);letter-spacing:.3px;margin-bottom:20px;line-height:1.4;display:block}
.prof-details{border-top:1px solid rgba(255,255,255,.1);padding-top:18px}
.prof-detail-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:10px}
.prof-detail-icon{font-size:14px;margin-top:1px;flex-shrink:0}
.prof-detail-text{font-size:13px;color:rgba(255,255,255,.7);line-height:1.5}
.contact-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.contact-links a{background:rgba(74,179,232,.12);border:1px solid rgba(74,179,232,.3);color:var(--accent);font-size:12px;padding:6px 12px;border-radius:20px;text-decoration:none;transition:background .2s}
.contact-links a:hover{background:rgba(74,179,232,.28)}

/* RESEARCH */
.research-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.research-card{background:white;border-radius:12px;border:1px solid var(--border);padding:28px 22px;transition:transform .2s,box-shadow .2s;position:relative;overflow:hidden}
.research-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--sky),var(--accent));opacity:0;transition:opacity .2s}
.research-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(10,31,60,.1)}
.research-card:hover::before{opacity:1}
.research-icon{width:50px;height:50px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.research-card h3{font-family:'Playfair Display',serif;font-size:17px;font-weight:600;color:var(--navy);margin-bottom:10px;line-height:1.3}
.research-card p{font-size:14px;color:var(--text-muted);line-height:1.75;font-weight:300}
.tag{display:inline-block;background:var(--light);color:var(--sky);font-size:11px;padding:4px 10px;border-radius:12px;margin:14px 0 0;font-weight:600;letter-spacing:.2px}

/* PUBLICATIONS */
.pub-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.filter-btn{background:white;border:1px solid var(--border);color:var(--text-muted);font-size:12px;padding:7px 16px;border-radius:20px;cursor:pointer;transition:all .2s;font-family:'Source Sans 3',sans-serif}
.filter-btn:hover,.filter-btn.active{background:var(--navy);color:white;border-color:var(--navy)}
.pub-list{display:flex;flex-direction:column;gap:16px;max-width:960px}
.pub-item{background:var(--off-white);border-radius:10px;border-left:4px solid var(--sky);padding:05px 05px;transition:border-color .2s,opacity .3s}
.pub-item:hover{border-color:var(--accent)}
.pub-item.hidden{display:none}
.pub-year-badge{float:right;background:var(--navy);color:white;font-size:11px;padding:3px 10px;border-radius:20px;font-weight:600}
.pub-title{font-size:15px;font-weight:600;color:var(--navy);margin-bottom:6px;line-height:1.4}
.pub-authors{font-size:13px;color:var(--text-muted);margin-bottom:5px;font-weight:300}
.pub-journal{font-size:13px;color:var(--sky);font-style:italic}
.pub-doi{margin-top:7px}
.pub-doi a{color:var(--accent);text-decoration:none;font-size:12px;font-weight:600}
.pub-doi a:hover{text-decoration:underline}

/* NEWS */
.news-list{display:flex;flex-direction:column;gap:14px;max-width:860px;margin-bottom:32px}
.news-item{display:flex;gap:18px;align-items:flex-start;background:white;border-radius:10px;padding:18px 22px;border:1px solid var(--border);transition:box-shadow .2s}
.news-item:hover{box-shadow:0 4px 16px rgba(10,31,60,.08)}
.news-date{background:var(--navy);color:var(--accent);font-size:11px;padding:4px 12px;border-radius:20px;white-space:nowrap;font-weight:600;height:fit-content;margin-top:2px;flex-shrink:0}
.news-text{font-size:14px;color:var(--text);line-height:1.65}
.news-text a{color:var(--sky);text-decoration:none;font-size:12px;margin-left:8px;font-weight:600}
.recruiting-banner{background:var(--navy);border-radius:12px;padding:24px 28px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;max-width:860px}
.recruiting-icon{font-size:28px;flex-shrink:0}
.recruiting-banner div{flex:1;font-size:14px;color:rgba(255,255,255,.8);line-height:1.6;min-width:200px}
.recruiting-banner strong{color:var(--accent);font-size:15px}

/* TEAM */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
a.team-card{text-decoration:none;color:inherit;display:block;cursor:pointer}
.team-view-profile{font-size:11px;color:var(--sky);font-weight:600;margin-top:10px;opacity:0;transition:opacity .2s}
.team-card:hover .team-view-profile{opacity:1}
.team-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(10,31,60,.1)}
.team-card{background:white;border-radius:12px;border:1px solid var(--border);padding:26px 16px;text-align:center;transition:transform .2s,box-shadow .2s}
.team-avatar{width:70px;height:70px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:'Playfair Display',serif;font-size:22px;font-weight:700;color:white;margin:0 auto 14px}
.team-photo{width:70px;height:70px;border-radius:50%;object-fit:cover;margin:0 auto 14px;display:block;border:3px solid var(--light)}
.team-name{font-size:14px;font-weight:600;color:var(--navy);margin-bottom:4px}
.team-role{font-size:12px;color:var(--text-muted);font-weight:300}
.team-research{font-size:11px;color:var(--sky);margin-top:6px;font-style:italic;line-height:1.4}
.team-email{font-size:11px;margin-top:8px}
.team-email a{color:var(--muted);text-decoration:none}
.team-card.recruit{border:2px dashed var(--border);background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:175px}
.recruit-plus{font-size:32px;color:var(--muted);margin-bottom:8px}
.team-card.recruit a{color:var(--sky);font-size:12px;text-decoration:none;font-weight:600}

/* GALLERY */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}
.gallery-item{border-radius:10px;overflow:hidden;cursor:pointer;position:relative;aspect-ratio:4/3;background:var(--light)}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s;display:block}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-overlay{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(10,31,60,.88));padding:24px 14px 14px;opacity:0;transition:opacity .3s}
.gallery-item:hover .gallery-overlay{opacity:1}
.gallery-caption{color:white;font-size:12px;font-weight:400;line-height:1.4}
.gallery-placeholder{width:100%;height:100%;background:var(--light);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:40px;color:var(--muted);gap:8px}
.gallery-placeholder span{font-size:11px;color:var(--text-muted);font-family:'Source Sans 3',sans-serif;text-align:center;padding:0 12px}
.gallery-note{font-size:13px;color:var(--text-muted);font-style:italic}
.gallery-note code{background:white;border:1px solid var(--border);padding:2px 6px;border-radius:4px;font-size:12px}

.activities-preview,
#activities-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 40px;
}

.activity-card {
  background: white;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.08);
}

.activity-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.activity-meta {
  display: flex;
  gap: 12px;
}

.activity-date,
.activity-role {
  background: #eef4ff;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 14px;
}

.activity-description {
  margin-top: 16px;
  line-height: 1.7;
}

.activity-gallery {
  margin-top: 24px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.activity-thumb {
  width: 220px;
  height: 160px;
  object-fit: cover;
  border-radius: 10px;
  cursor: pointer;
  transition: 0.3s;
}

.activity-thumb:hover {
  transform: scale(1.03);
}


.publications-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(350px,1fr));
    gap:10px;
}

.publication-card{
    background:#fff;
    border-radius:16px;
    padding:10px;
    box-shadow:0 4px 18px rgba(0,0,0,.08);
    transition:.3s;
}

.publication-card:hover{
    transform:translateY(-4px);
}

.pub-year{
    color:#1a4a8a;
    font-weight:700;
}

.pub-type{
    display:inline-block;
    margin-top:8px;
    background:#eef4ff;
    padding:4px 12px;
    border-radius:20px;
}

.pub-title{
    margin-top:10px;
    line-height:1.5;
}

.pub-authors{
    color:#666;
}

.pub-venue{
    font-style:italic;
}

.pub-buttons{
    margin-top:10px;
    display:flex;
    gap:10px;
}

.pub-btn{
    padding:8px 16px;
    border-radius:8px;
    text-decoration:none;
    background:#1a4a8a;
    color:white;
}

.hero-small{
    padding:120px 0 70px;
    background:linear-gradient(
        135deg,
        rgba(26,74,138,.06),
        rgba(26,74,138,.02)
    );
    text-align:center;
}

.hero-description{
    max-width:800px;
    margin:20px auto 0;
    color:#555;
    font-size:1.1rem;
    line-height:1.8;
}
.publication-year-section{
    margin-bottom:60px;
}

.publication-year{
    color:#1a4a8a;
    margin-bottom:20px;
    border-bottom:3px solid #1a4a8a;
    padding-bottom:10px;
}

.publication-category{
    margin:30px 0 15px;
    color:#444;
}

.publication-card{

    background:#fff;

    padding:24px;

    border-radius:16px;

    box-shadow:0 4px 16px rgba(0,0,0,.08);

    margin-bottom:20px;

    transition:.3s;
}

.publication-card:hover{

    transform:translateY(-4px);

}

.publication-type{

    display:inline-block;

    padding:5px 12px;

    background:#eef4ff;

    color:#1a4a8a;

    border-radius:20px;

    font-size:14px;

    font-weight:600;
}

.publication-title{

    margin-top:10px;

    line-height:1.6;
}

.publication-authors{

    color:#666;

    margin-top:10px;
}

.publication-venue{

    color:#444;

    font-style:italic;
}

.publication-links{

    margin-top:15px;

    display:flex;

    gap:10px;

    flex-wrap:wrap;
}

.pub-btn{

    text-decoration:none;

    background:#1a4a8a;

    color:white;

    padding:8px 16px;

    border-radius:8px;

    font-size:14px;

    transition:.3s;
}

.pub-btn:hover{

    opacity:.85;
}

#publications-preview{
    padding-top: 10px;
    padding-bottom: 0px;
}




/* LIGHTBOX */

.lightbox {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.92);
  justify-content: center;
  align-items: center;
}

.lightbox-content {
  max-width: 90%;
  max-height: 90%;
  border-radius: 10px;
}

.close-lightbox {
  position: absolute;
  top: 30px;
  right: 40px;
  color: white;
  font-size: 42px;
  cursor: pointer;
}
/* LIGHTBOX */
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,.93);z-index:999;align-items:center;justify-content:center;flex-direction:column;gap:16px;padding:20px}
.lightbox.open{display:flex}
.lightbox img{max-width:90vw;max-height:80vh;border-radius:8px;object-fit:contain}
.lightbox p{color:rgba(255,255,255,.7);font-size:14px;text-align:center}
.lightbox-close{position:absolute;top:20px;right:28px;background:none;border:none;color:white;font-size:28px;cursor:pointer;opacity:.7;transition:opacity .2s;line-height:1}
.lightbox-close:hover{opacity:1}

/* CONTACT */
.contact-bg{background:var(--navy);color:white}
.contact-bg .section-title{color:white}
.contact-bg .section-label{color:var(--accent)}
.contact-bg .section-divider{background:var(--accent)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:20px}
.contact-row{display:flex;gap:16px;align-items:flex-start}
.contact-icon{width:42px;height:42px;border-radius:8px;background:rgba(74,179,232,.12);border:1px solid rgba(74,179,232,.28);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.contact-detail h4{font-size:11px;color:var(--accent);letter-spacing:1px;text-transform:uppercase;margin-bottom:4px}
.contact-detail p{font-size:14px;color:rgba(255,255,255,.72);font-weight:300;line-height:1.6;white-space:pre-line}
.contact-detail a{color:var(--accent);text-decoration:none}
.contact-detail a:hover{text-decoration:underline}
.contact-form-title{font-family:'Playfair Display',serif;font-size:22px;color:white;margin-bottom:8px;font-weight:600}
.contact-form-subtitle{font-size:13px;color:rgba(255,255,255,.5);margin-bottom:22px;line-height:1.5}
.google-form-btn{display:block;background:rgba(74,179,232,.15);border:1.5px solid rgba(74,179,232,.4);color:var(--accent);text-align:center;padding:18px 24px;border-radius:10px;text-decoration:none;font-size:15px;font-weight:600;transition:all .2s;margin-bottom:16px}
.google-form-btn:hover{background:rgba(74,179,232,.28);border-color:var(--accent)}
.google-form-btn .gf-icon{font-size:28px;display:block;margin-bottom:8px}
.google-form-note{font-size:12px;color:rgba(255,255,255,.4);line-height:1.5;text-align:center}
.google-form-note a{color:var(--accent)}

/* FOOTER */
footer{background:#050e1c;color:rgba(255,255,255,.4);padding:32px 60px}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-logo{display:flex;align-items:center;gap:12px}
.footer-links{display:flex;gap:20px}
.footer-links a{color:rgba(255,255,255,.35);text-decoration:none;font-size:12px;transition:color .2s}
.footer-links a:hover{color:var(--accent)}

/* RESPONSIVE */
@media(max-width:960px){
  nav{padding:0 24px}
  .hamburger{display:block}
  nav ul{display:none;flex-direction:column;position:absolute;top:66px;left:0;width:100%;background:rgba(10,31,60,.98);padding:16px 24px 24px;gap:14px;border-bottom:1px solid rgba(74,179,232,.2)}
  nav ul.open{display:flex}
  section{padding:40px 20px}
  .hero{padding:100px 24px 80px}
  .hero h1{font-size:38px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .research-grid{grid-template-columns:1fr 1fr}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .stats-bar{justify-content:flex-start}
  .stat-item{border-right:none;border-bottom:1px solid var(--border);flex:none;width:50%}
  .footer-inner{flex-direction:column;align-items:flex-start}
}
@media(max-width:560px){
  .hero h1{font-size:30px}
  .research-grid,.gallery-grid{grid-template-columns:1fr}
  .section-title{font-size:28px}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .recruiting-banner{flex-direction:column}
}