:root{
  --bg:#070b14;
  --bg-2:#0b1020;
  --panel:rgba(18,25,43,.72);
  --panel-strong:#10182b;
  --line:rgba(255,255,255,.08);
  --text:#eef2ff;
  --muted:#9aa8c7;
  --accent:#69a6ff;
  --accent-2:#8a6cff;
  --accent-3:#20d6c7;
  --shadow:0 20px 70px rgba(0,0,0,.35);
  --radius:24px;
  --radius-sm:16px;
  --container:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',sans-serif;
  background:linear-gradient(180deg,#060913 0%,#0a1020 100%);
  color:var(--text);
  overflow-x:hidden;
}

a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,textarea{font:inherit}

#particleCanvas{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:-3;
  pointer-events:none;
}

.bg-grid{
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:42px 42px;
  mask-image:radial-gradient(circle at center, black, transparent 80%);
  z-index:-4;
}

.bg-orb{
  position:fixed;
  border-radius:50%;
  filter:blur(90px);
  z-index:-5;
  opacity:.55;
}
.orb-1{width:320px;height:320px;background:#416dff;top:90px;left:-40px}
.orb-2{width:360px;height:360px;background:#7b4cff;right:-60px;top:220px}

.container{
  width:min(var(--container), calc(100% - 32px));
  margin:0 auto;
}

.section{padding:110px 0;position:relative}
.section-dark{background:rgba(3,8,19,.42)}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  backdrop-filter:blur(16px);
  background:rgba(8,12,24,.55);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.site-header.scrolled{background:rgba(8,12,24,.82)}

.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:84px;
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
}
.brand-mark{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-weight:800;box-shadow:var(--shadow)
}
.brand-text{display:flex;flex-direction:column}
.brand-text strong{font-size:15px}
.brand-text small{font-size:12px;color:var(--muted)}

.desktop-nav{display:flex;gap:24px}
.desktop-nav a{color:#d5def3;font-size:14px;position:relative}
.desktop-nav a::after{
  content:'';
  position:absolute;
  left:0;
  bottom:-8px;
  width:0;
  height:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-3));
  transition:.3s;
}
.desktop-nav a:hover::after{width:100%}

.header-actions{display:flex;align-items:center;gap:12px}
.menu-btn{
  display:none;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:#fff;
  width:44px;
  height:44px;
  border-radius:14px;
  cursor:pointer
}
.mobile-nav{display:none;padding:0 16px 16px}
.mobile-nav a{
  display:block;
  padding:12px 14px;
  border-radius:14px;
  color:#d5def3
}
.mobile-nav a:hover{background:rgba(255,255,255,.05)}
.mobile-nav.open{display:block}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border:none;
  border-radius:16px;
  padding:14px 22px;
  font-weight:700;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
  cursor:pointer
}
.btn:hover{transform:translateY(-2px)}
.btn-sm{padding:11px 16px;border-radius:14px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;
  box-shadow:0 14px 40px rgba(78,104,255,.35)
}
.btn-secondary{
  background:rgba(255,255,255,.06);
  color:#fff;
  border:1px solid var(--line)
}
.btn-tertiary{
  background:rgba(255,255,255,.06);
  color:#cfe0ff;
  border:1px solid var(--line);
  padding:12px 18px;
  border-radius:14px
}
.btn-full{width:100%}

.hero{
  padding-top:88px;
  min-height:100vh;
  display:flex;
  align-items:center
}
.hero-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:42px;
  align-items:center
}
.hero-copy h1{
  margin:14px 0 14px;
  font-size:clamp(38px,6vw,70px);
  line-height:1.02;
  letter-spacing:-.04em
}
.hero-copy .hero-text{
  color:var(--muted);
  font-size:18px;
  line-height:1.9;
  max-width:700px
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  padding:10px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:#dce6ff;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  text-transform:uppercase
}
.typing-line{
  font-size:28px;
  margin:0 0 18px;
  color:#d6e4ff;
  min-height:40px
}
.cursor{
  display:inline-block;
  animation:blink .9s infinite
}
@keyframes blink{50%{opacity:0}}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin:28px 0 34px
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px
}
.stat-card{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  padding:22px;
  border-radius:20px;
  box-shadow:var(--shadow)
}
.stat-card h3{
  margin:0 0 8px;
  font-size:36px;
  color:#fff
}
.stat-card p{
  margin:0;
  color:var(--muted);
  font-size:14px
}

.hero-visual{position:relative}
.floating-card{animation:floatY 5s ease-in-out infinite}
@keyframes floatY{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-12px)}
}
.profile-shell{
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.06));
  border:1px solid rgba(255,255,255,.1);
  border-radius:28px;
  padding:16px;
  box-shadow:var(--shadow)
}
.profile-topbar{
  display:flex;
  gap:8px;
  padding:4px 4px 14px
}
.profile-topbar span{
  width:11px;
  height:11px;
  border-radius:50%;
  background:rgba(255,255,255,.2)
}
.profile-image{
  border-radius:22px;
  aspect-ratio:4/4.6;
  object-fit:cover;
  width:100%
}
.profile-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-top:14px
}
.profile-panel div{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:18px;
  padding:14px
}
.profile-panel small{
  display:block;
  color:var(--muted);
  margin-bottom:5px
}
.profile-panel strong{font-size:14px}

.section-heading{
  max-width:850px;
  margin-bottom:42px
}
.section-heading.center{
  text-align:center;
  margin-left:auto;
  margin-right:auto
}
.section-heading h2{
  font-size:clamp(30px,4vw,52px);
  line-height:1.08;
  letter-spacing:-.035em;
  margin:14px 0
}
.section-heading p{
  color:var(--muted);
  font-size:17px;
  line-height:1.85
}

.about-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px
}
.about-card,
.feature-card,
.project-card,
.research-card,
.contact-panel,
.contact-form,
.gallery-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(16px)
}
.about-card{padding:28px}
.about-card h3{
  margin-top:0;
  font-size:24px
}
.about-card p{
  color:var(--muted);
  line-height:1.9
}
.check-list{
  list-style:none;
  padding:0;
  margin:20px 0 0
}
.check-list li{
  padding-left:26px;
  position:relative;
  margin:12px 0;
  color:#dbe5ff
}
.check-list li::before{
  content:'✓';
  position:absolute;
  left:0;
  top:0;
  color:var(--accent-3);
  font-weight:800
}

.mini-cards{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
  margin-top:22px
}
.mini-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  padding:18px;
  border-radius:18px
}
.mini-card span{
  display:block;
  color:var(--muted);
  font-size:13px;
  margin-bottom:6px
}
.mini-card strong{font-size:15px}

.expertise-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px
}
.feature-card{
  padding:28px;
  transition:transform .3s ease,border-color .3s ease
}
.feature-card:hover{
  transform:translateY(-8px);
  border-color:rgba(105,166,255,.35)
}
.feature-icon{
  font-size:30px;
  margin-bottom:16px
}
.feature-card h3{
  margin:0 0 12px
}
.feature-card p{
  margin:0;
  color:var(--muted);
  line-height:1.85
}

.projects-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px
}
.project-card{
  overflow:hidden;
  transition:transform .3s ease,border-color .3s ease
}
.project-card:hover{
  transform:translateY(-10px);
  border-color:rgba(105,166,255,.35)
}
.project-image-wrap{
  aspect-ratio:16/11;
  overflow:hidden
}
.project-image-wrap img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease
}
.project-card:hover img{transform:scale(1.06)}
.project-body{padding:22px}
.project-badge{
  display:inline-block;
  padding:8px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  font-size:12px;
  color:#dce7ff;
  margin-bottom:12px
}
.project-body h3{
  margin:0 0 10px;
  font-size:22px
}
.project-body p{
  margin:0 0 18px;
  color:var(--muted);
  line-height:1.8
}
.link-btn{
  border:none;
  background:none;
  color:#9fc0ff;
  font-weight:700;
  padding:0;
  cursor:pointer
}

.gallery-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px
}
.gallery-card{
  overflow:hidden;
  aspect-ratio:1/1.1
}
.gallery-card img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s ease, filter .4s ease
}
.gallery-card:hover img{
  transform:scale(1.08);
  filter:saturate(1.12)
}

.research-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px
}
.research-card{
  padding:28px
}
.research-label{
  display:inline-block;
  padding:8px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  font-size:12px;
  color:#dce7ff
}
.research-card h3{
  margin:16px 0 10px;
  font-size:26px
}
.research-meta{
  color:#a8b6d4;
  font-weight:600;
  margin-bottom:14px
}
.research-card p{
  color:var(--muted);
  line-height:1.85
}

.contact-section{
  background:rgba(4,8,18,.58)
}
.contact-layout{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:24px
}
.contact-panel{padding:30px}
.contact-panel h3{
  margin-top:0;
  font-size:34px;
  letter-spacing:-.03em
}
.contact-panel p{
  color:var(--muted);
  line-height:1.9
}
.contact-cards{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
  margin-top:24px
}
.contact-card-item{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  padding:18px;
  border-radius:18px
}
.contact-card-item span{
  display:block;
  color:var(--muted);
  font-size:13px;
  margin-bottom:7px
}
.contact-card-item strong{
  font-size:15px;
  word-break:break-word
}

.contact-form{padding:28px}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px
}
.form-field{margin-bottom:14px}
.form-field label{
  display:block;
  font-size:14px;
  color:#dce6ff;
  margin-bottom:8px
}
.form-field input,
.form-field textarea{
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:#fff;
  border-radius:16px;
  padding:15px 16px;
  outline:none
}
.form-field input:focus,
.form-field textarea:focus{
  border-color:rgba(105,166,255,.5);
  box-shadow:0 0 0 4px rgba(105,166,255,.12)
}
.form-field textarea{
  min-height:160px;
  resize:vertical
}
.form-note{
  margin:14px 0 0;
  color:var(--muted);
  font-size:13px
}

.site-footer{
  padding:28px 0;
  border-top:1px solid rgba(255,255,255,.06);
  background:rgba(4,7,14,.8)
}
.footer-wrap{
  display:flex;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  color:var(--muted);
  font-size:14px
}

.project-modal{
  position:fixed;
  inset:0;
  background:rgba(4,8,18,.72);
  backdrop-filter:blur(12px);
  display:none;
  align-items:center;
  justify-content:center;
  padding:20px;
  z-index:300
}
.project-modal.open{display:flex}
.project-modal-card{
  width:min(700px,100%);
  background:#0d1425;
  border:1px solid var(--line);
  border-radius:24px;
  padding:28px;
  box-shadow:var(--shadow);
  position:relative
}
.modal-close{
  position:absolute;
  right:16px;
  top:14px;
  background:none;
  border:none;
  color:#fff;
  font-size:34px;
  cursor:pointer
}
.modal-label{
  display:inline-block;
  color:#9fb5e3;
  font-size:13px;
  text-transform:uppercase;
  letter-spacing:.08em
}
#modalTitle{
  margin:14px 0 10px;
  font-size:32px
}
#modalDescription{
  color:var(--muted);
  line-height:1.9
}
.modal-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px
}
.modal-tags span{
  padding:9px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  font-size:13px
}

.chatbot-wrap{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:350
}
.chatbot-toggle{
  width:58px;
  height:58px;
  border:none;
  border-radius:50%;
  cursor:pointer;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;
  font-weight:800;
  box-shadow:0 16px 38px rgba(78,104,255,.35)
}
.chatbot-panel{
  position:absolute;
  right:0;
  bottom:72px;
  width:320px;
  background:#0d1425;
  border:1px solid var(--line);
  border-radius:22px;
  box-shadow:var(--shadow);
  overflow:hidden;
  display:none
}
.chatbot-panel.open{display:block}
.chatbot-head{
  padding:16px 18px;
  border-bottom:1px solid var(--line);
  display:flex;
  flex-direction:column
}
.chatbot-head small{color:var(--muted)}
.chatbot-body{
  max-height:280px;
  overflow:auto;
  padding:16px;
  display:flex;
  flex-direction:column;
  gap:10px
}
.bot-msg,.user-msg{
  padding:12px 14px;
  border-radius:16px;
  line-height:1.6;
  font-size:14px
}
.bot-msg{
  background:rgba(255,255,255,.05);
  color:#dfe9ff
}
.user-msg{
  background:rgba(105,166,255,.16);
  align-self:flex-end
}
.chatbot-input-wrap{
  padding:14px;
  border-top:1px solid var(--line)
}
.chatbot-input-wrap input{
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:#fff;
  border-radius:14px;
  padding:13px 14px;
  outline:none
}

.reveal{
  opacity:0;
  transform:translateY(34px);
  transition:opacity .8s ease, transform .8s ease
}
.reveal.show{
  opacity:1;
  transform:translateY(0)
}
.delay-1{transition-delay:.08s}
.delay-2{transition-delay:.16s}
.delay-3{transition-delay:.24s}

@media (max-width: 1100px){
  .hero-grid,.about-layout,.contact-layout{grid-template-columns:1fr}
  .projects-grid,.expertise-grid{grid-template-columns:1fr 1fr}
  .gallery-grid{grid-template-columns:1fr 1fr}
}

@media (max-width: 840px){
  .desktop-nav{display:none}
  .menu-btn{display:block}
  .stats-grid,.projects-grid,.expertise-grid,.research-grid,.contact-cards,.form-row{grid-template-columns:1fr}
  .hero-copy h1{font-size:44px}
  .typing-line{font-size:24px}
  .contact-panel h3{font-size:28px}
}

@media (max-width: 560px){
  .section{padding:86px 0}
  .container{width:min(var(--container), calc(100% - 20px))}
  .hero-copy h1{font-size:36px}
  .section-heading h2{font-size:30px}
  .chatbot-panel{width:290px}
}