:root {
    --navy:#080f1e; --navy-mid:#0d1a2e; --navy-light:#112240;
    --teal:#00d4c8; --teal-dim:#00b4aa;
    --teal-glow:rgba(0,212,200,0.15); --teal-subtle:rgba(0,212,200,0.06);
    --white:#e8f0f2; --white-dim:rgba(232,240,242,0.6);
    --white-subtle:rgba(232,240,242,0.25); --accent:#64ffda;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{background:var(--navy);color:var(--white);font-family:'DM Sans',sans-serif;font-weight:300;overflow-x:hidden;}
  body::before{content:'';position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");pointer-events:none;z-index:1000;opacity:0.4;}
  .grid-bg{position:fixed;inset:0;background-image:linear-gradient(rgba(0,212,200,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,212,200,0.03) 1px,transparent 1px);background-size:60px 60px;pointer-events:none;z-index:0;}

  nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:1.5rem 4rem;display:flex;justify-content:space-between;align-items:center;background:linear-gradient(180deg,rgba(8,15,30,0.95) 0%,transparent 100%);backdrop-filter:blur(12px);border-bottom:1px solid rgba(0,212,200,0.08);}
  .nav-logo{font-family:'Syne',sans-serif;font-weight:800;font-size:1.4rem;letter-spacing:0.1em;color:var(--teal);text-decoration:none;}
  .nav-logo span{color:var(--white);}
  .nav-links{display:flex;gap:2rem;list-style:none;}
  .nav-links a{color:var(--white-dim);text-decoration:none;font-size:0.8rem;letter-spacing:0.12em;text-transform:uppercase;transition:color 0.3s;position:relative;}
  .nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:1px;background:var(--teal);transition:width 0.3s;}
  .nav-links a:hover{color:var(--teal);}
  .nav-links a:hover::after{width:100%;}

  #hero{min-height:100vh;display:flex;align-items:center;padding:8rem 4rem 4rem;position:relative;overflow:hidden;}
  .hero-glow{position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(0,212,200,0.08) 0%,transparent 70%);top:50%;right:-100px;transform:translateY(-50%);pointer-events:none;}
  .hero-glow-2{position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(0,100,200,0.1) 0%,transparent 70%);bottom:-100px;left:200px;pointer-events:none;}
  .hero-layout{display:grid;grid-template-columns:1fr auto;gap:4rem;align-items:center;width:100%;max-width:1200px;position:relative;z-index:1;}
  .hero-content{animation:fadeUp 1s ease both;}
  .hero-tag{display:inline-flex;align-items:center;gap:0.5rem;font-size:0.75rem;letter-spacing:0.2em;text-transform:uppercase;color:var(--teal);margin-bottom:1.5rem;padding:0.4rem 1rem;border:1px solid rgba(0,212,200,0.3);border-radius:100px;background:var(--teal-subtle);}
  .hero-tag::before{content:'';width:6px;height:6px;background:var(--teal);border-radius:50%;animation:pulse 2s infinite;}
  @keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.5;transform:scale(0.8)}}
  .hero-name{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:clamp(2.6rem,5vw,4.2rem);line-height:1.12;margin-bottom:0.5rem;letter-spacing:-0.01em;}
  .hero-name .highlight{color:var(--teal);}
  .hero-title{font-family:'Syne',sans-serif;font-weight:400;font-size:clamp(0.85rem,1.8vw,1.05rem);color:var(--white-dim);margin-bottom:1.5rem;letter-spacing:0.05em;}
  .hero-desc{font-size:1rem;line-height:1.8;color:var(--white-dim);max-width:560px;margin-bottom:2.5rem;}
  .hero-cta{display:flex;gap:1rem;flex-wrap:wrap;}
  .btn-primary{padding:0.85rem 2rem;background:var(--teal);color:var(--navy);font-family:'Syne',sans-serif;font-weight:700;font-size:0.85rem;letter-spacing:0.1em;text-transform:uppercase;text-decoration:none;border-radius:4px;transition:all 0.3s;border:none;cursor:pointer;}
  .btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,212,200,0.3);}
  .btn-outline{padding:0.85rem 2rem;background:transparent;color:var(--teal);font-family:'Syne',sans-serif;font-weight:700;font-size:0.85rem;letter-spacing:0.1em;text-transform:uppercase;text-decoration:none;border-radius:4px;border:1px solid rgba(0,212,200,0.4);transition:all 0.3s;cursor:pointer;}
  .btn-outline:hover{background:var(--teal-subtle);border-color:var(--teal);transform:translateY(-2px);}

  .hero-photo-wrap{position:relative;flex-shrink:0;}
  .hero-photo{width:260px;height:260px;border-radius:50%;border:2px solid rgba(0,212,200,0.3);object-fit:cover;display:block;background:var(--navy-light);box-shadow:0 0 60px rgba(0,212,200,0.15);}
  .hero-photo-placeholder{width:260px;height:260px;border-radius:50%;border:2px dashed rgba(0,212,200,0.3);background:var(--navy-light);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem;color:var(--white-dim);font-size:0.8rem;letter-spacing:0.08em;box-shadow:0 0 60px rgba(0,212,200,0.1);cursor:pointer;transition:all 0.3s;}
  .hero-photo-placeholder:hover{border-color:var(--teal);background:var(--teal-subtle);}
  .hero-photo-ring{position:absolute;inset:-12px;border-radius:50%;border:1px solid rgba(0,212,200,0.15);animation:spin 20s linear infinite;pointer-events:none;}
  .hero-photo-ring::before{content:'';position:absolute;top:-3px;left:50%;transform:translateX(-50%);width:6px;height:6px;background:var(--teal);border-radius:50%;}
  @keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}

  .hero-stats{display:flex;gap:3rem;margin-top:4rem;padding-top:3rem;border-top:1px solid rgba(0,212,200,0.1);flex-wrap:wrap;}
  .stat-num{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:2rem;color:var(--teal);line-height:1;font-stretch:normal;}
  .stat-label{font-size:0.72rem;color:var(--white-dim);letter-spacing:0.12em;text-transform:uppercase;margin-top:0.4rem;font-family:'DM Sans',sans-serif;font-weight:400;}

  section{padding:6rem 4rem;position:relative;z-index:1;}
  .section-tag{font-size:0.7rem;letter-spacing:0.25em;text-transform:uppercase;color:var(--teal);margin-bottom:0.75rem;display:flex;align-items:center;gap:0.75rem;}
  .section-tag::before{content:'';width:30px;height:1px;background:var(--teal);}
  .section-title{font-family:'Syne',sans-serif;font-weight:800;font-size:clamp(2rem,4vw,2.8rem);line-height:1.1;margin-bottom:1rem;letter-spacing:-0.02em;}
  .section-sub{color:var(--white-dim);max-width:560px;line-height:1.8;margin-bottom:3rem;}

  #about{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-mid) 100%);}
  .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:start;max-width:1200px;margin:0 auto;}
  .about-text p{color:var(--white-dim);line-height:1.9;margin-bottom:1.2rem;font-size:0.95rem;}
  .about-text p strong{color:var(--white);font-weight:500;}
  .cert-badge{display:inline-flex;align-items:center;gap:0.6rem;padding:0.6rem 1.2rem;background:var(--teal-subtle);border:1px solid rgba(0,212,200,0.2);border-radius:6px;font-size:0.8rem;margin-top:0.5rem;}
  .cert-badge span{color:var(--teal);font-weight:500;}
  .about-skills{display:flex;flex-direction:column;gap:1.5rem;}
  .skill-tags{display:flex;flex-wrap:wrap;gap:0.6rem;}
  .skill-tag{padding:0.45rem 1rem;background:var(--navy-light);border:1px solid rgba(0,212,200,0.15);border-radius:100px;font-size:0.8rem;color:var(--white-dim);transition:all 0.3s;}
  .skill-tag:hover{border-color:var(--teal);color:var(--teal);background:var(--teal-subtle);}
  .highlight-tag{border-color:rgba(0,212,200,0.4);color:var(--teal);background:var(--teal-subtle);}

  #services{background:var(--navy-mid);}
  .services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;max-width:1200px;margin:0 auto;}
  .service-card{padding:2.5rem;background:var(--navy-light);border:1px solid rgba(0,212,200,0.08);border-radius:8px;transition:all 0.4s;position:relative;overflow:hidden;}
  .service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--teal),transparent);transform:scaleX(0);transition:transform 0.4s;}
  .service-card:hover{border-color:rgba(0,212,200,0.2);transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,0.3);}
  .service-card:hover::before{transform:scaleX(1);}
  .service-icon{width:48px;height:48px;background:var(--teal-subtle);border:1px solid rgba(0,212,200,0.15);border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:1.5rem;font-size:1.4rem;}
  .service-title{font-family:'Syne',sans-serif;font-weight:700;font-size:1.05rem;margin-bottom:0.75rem;}
  .service-desc{color:var(--white-dim);font-size:0.875rem;line-height:1.7;}

  #gallery{background:var(--navy);}
  .gallery-carousel{position:relative;max-width:1200px;margin:0 auto;}
  .gallery-track-wrap{overflow:hidden;border-radius:10px;}
  .gallery-track{display:flex;transition:transform 0.5s cubic-bezier(0.4,0,0.2,1);}
  .gallery-slide{display:grid;grid-template-columns:1fr 1fr;gap:1rem;min-width:100%;padding:0 2px;}
  .gallery-item{aspect-ratio:4/3;border-radius:8px;overflow:hidden;border:1px solid rgba(0,212,200,0.08);background:var(--navy-light);position:relative;cursor:pointer;transition:all 0.3s;}
  .gallery-item:hover{border-color:rgba(0,212,200,0.3);transform:scale(1.02);}
  .gallery-item img{width:100%;height:100%;object-fit:cover;display:block;}
  .gallery-item-overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,15,30,0.8) 0%,transparent 60%);opacity:0;transition:opacity 0.3s;display:flex;align-items:flex-end;padding:1rem;}
  .gallery-item:hover .gallery-item-overlay{opacity:1;}
  .gallery-item-label{font-size:0.75rem;color:var(--white);letter-spacing:0.05em;}
  .gallery-btn{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;background:rgba(8,15,30,0.85);border:1px solid rgba(0,212,200,0.3);color:var(--teal);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.3s;z-index:10;backdrop-filter:blur(8px);}
  .gallery-btn:hover{background:var(--teal);color:var(--navy);border-color:var(--teal);box-shadow:0 0 20px rgba(0,212,200,0.4);}
  .gallery-btn.prev{left:-22px;}
  .gallery-btn.next{right:-22px;}
  .gallery-dots{display:flex;justify-content:center;gap:0.5rem;margin-top:1.5rem;}
  .gallery-dot{width:8px;height:8px;border-radius:50%;background:rgba(0,212,200,0.2);border:1px solid rgba(0,212,200,0.3);cursor:pointer;transition:all 0.3s;}
  .gallery-dot.active{background:var(--teal);box-shadow:0 0 8px rgba(0,212,200,0.5);width:24px;border-radius:4px;}
  @media(max-width:600px){.gallery-slide{grid-template-columns:1fr;}.gallery-btn.prev{left:-10px;}.gallery-btn.next{right:-10px;}}

  #experience{background:var(--navy-mid);}
  .exp-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;max-width:1200px;margin:0 auto;}
  .exp-col-title{font-family:'Syne',sans-serif;font-weight:700;font-size:0.8rem;letter-spacing:0.2em;text-transform:uppercase;color:var(--teal);margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid rgba(0,212,200,0.15);}
  .timeline{display:flex;flex-direction:column;}
  .timeline-item{display:flex;gap:1.5rem;padding-bottom:2rem;position:relative;}
  .timeline-item:not(:last-child)::before{content:'';position:absolute;left:7px;top:16px;bottom:0;width:1px;background:linear-gradient(180deg,rgba(0,212,200,0.3),transparent);}
  .timeline-dot{width:15px;height:15px;min-width:15px;border-radius:50%;border:2px solid var(--teal);background:var(--navy);margin-top:3px;position:relative;z-index:1;}
  .timeline-dot.current{background:var(--teal);box-shadow:0 0 10px rgba(0,212,200,0.5);}
  .timeline-period{font-size:0.7rem;letter-spacing:0.12em;text-transform:uppercase;color:var(--teal);margin-bottom:0.3rem;}
  .timeline-role{font-family:'Syne',sans-serif;font-weight:700;font-size:0.95rem;margin-bottom:0.2rem;}
  .timeline-org{font-size:0.8rem;color:var(--white-dim);margin-bottom:0.6rem;}
  .timeline-desc{font-size:0.82rem;color:rgba(232,240,242,0.5);line-height:1.6;}

  #publications{background:var(--navy);}
  .pub-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;max-width:1200px;margin:0 auto;}
  .pub-card{padding:2rem;background:var(--navy-light);border:1px solid rgba(0,212,200,0.08);border-radius:8px;transition:all 0.3s;}
  .pub-card:hover{border-color:rgba(0,212,200,0.2);transform:translateY(-3px);}
  .pub-journal{font-size:0.7rem;letter-spacing:0.15em;text-transform:uppercase;color:var(--teal);margin-bottom:0.5rem;}
  .pub-title{font-family:'Syne',sans-serif;font-weight:700;font-size:0.95rem;line-height:1.4;margin-bottom:0.75rem;}
  .pub-desc{font-size:0.82rem;color:var(--white-dim);line-height:1.6;}
  .pub-date{font-size:0.75rem;color:var(--white-subtle);margin-top:1rem;}

  #teaching{background:var(--navy-mid);}
  .teaching-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;max-width:1200px;margin:0 auto;}
  .courses-list{display:flex;flex-direction:column;gap:0.75rem;}
  .course-item{display:flex;align-items:center;gap:1rem;padding:0.9rem 1.2rem;background:var(--navy-light);border:1px solid rgba(0,212,200,0.08);border-radius:6px;font-size:0.875rem;transition:all 0.3s;}
  .course-item:hover{border-color:rgba(0,212,200,0.2);background:var(--teal-subtle);}
  .course-dot{width:6px;height:6px;min-width:6px;background:var(--teal);border-radius:50%;}
  .training-cards{display:flex;flex-direction:column;gap:1rem;}
  .training-card{padding:1.5rem;background:var(--navy-light);border:1px solid rgba(0,212,200,0.08);border-radius:6px;transition:all 0.3s;}
  .training-card:hover{border-color:rgba(0,212,200,0.2);}
  .training-label{font-size:0.7rem;letter-spacing:0.15em;text-transform:uppercase;color:var(--teal);margin-bottom:0.4rem;}
  .training-title{font-family:'Syne',sans-serif;font-weight:600;font-size:0.9rem;margin-bottom:0.4rem;}
  .training-desc{font-size:0.8rem;color:var(--white-dim);line-height:1.6;}

  #projects{background:var(--navy);}
  .projects-carousel{position:relative;max-width:1200px;margin:0 auto;}
  .projects-track-wrap{overflow:hidden;border-radius:10px;}
  .projects-track{display:flex;transition:transform 0.5s cubic-bezier(0.4,0,0.2,1);}
  .projects-slide{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;min-width:100%;padding:0 2px;}
  .project-card{background:var(--navy-light);border:1px solid rgba(0,212,200,0.08);border-radius:10px;overflow:hidden;transition:all 0.4s;position:relative;display:flex;flex-direction:column;}
  .project-card:hover{border-color:rgba(0,212,200,0.25);transform:translateY(-5px);box-shadow:0 24px 60px rgba(0,0,0,0.4);}
  .project-card-header{padding:1.8rem 1.8rem 1rem;display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;}
  .project-icon{width:44px;height:44px;background:var(--teal-subtle);border:1px solid rgba(0,212,200,0.2);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0;}
  .project-year{font-size:0.7rem;letter-spacing:0.15em;text-transform:uppercase;color:var(--white-subtle);}
  .project-card-body{padding:0 1.8rem 1.5rem;flex:1;}
  .project-client{font-size:0.7rem;letter-spacing:0.15em;text-transform:uppercase;color:var(--teal);margin-bottom:0.4rem;}
  .project-title{font-family:'Syne',sans-serif;font-weight:700;font-size:1rem;line-height:1.35;margin-bottom:0.75rem;}
  .project-desc{font-size:0.82rem;color:var(--white-dim);line-height:1.7;margin-bottom:1rem;}
  .project-tags{display:flex;flex-wrap:wrap;gap:0.4rem;}
  .project-tag{padding:0.3rem 0.75rem;background:rgba(0,212,200,0.06);border:1px solid rgba(0,212,200,0.15);border-radius:100px;font-size:0.72rem;color:var(--teal);letter-spacing:0.05em;}
  .project-card-footer{padding:1rem 1.8rem;border-top:1px solid rgba(0,212,200,0.07);display:flex;align-items:center;gap:0.5rem;margin-top:auto;}
  .project-img-wrap{width:100%;aspect-ratio:4/3;overflow:hidden;background:var(--navy-light);border-bottom:1px solid rgba(0,212,200,0.08);position:relative;}
  .project-img-wrap img{width:100%;height:100%;object-fit:cover;display:block;transition:transform 0.5s ease;}
  .project-card:hover .project-img-wrap img{transform:scale(1.04);}
  .project-img-placeholder{width:100%;aspect-ratio:4/3;background:linear-gradient(135deg,var(--navy-light) 0%,rgba(0,212,200,0.04) 100%);border-bottom:1px solid rgba(0,212,200,0.08);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem;color:var(--white-subtle);font-size:0.72rem;letter-spacing:0.1em;}
  .project-location{font-size:0.75rem;color:var(--white-subtle);}
  .projects-btn{position:absolute;top:40%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;background:rgba(8,15,30,0.85);border:1px solid rgba(0,212,200,0.3);color:var(--teal);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.3s;z-index:10;backdrop-filter:blur(8px);}
  .projects-btn:hover{background:var(--teal);color:var(--navy);border-color:var(--teal);box-shadow:0 0 20px rgba(0,212,200,0.4);}
  .projects-btn.prev{left:-22px;}
  .projects-btn.next{right:-22px;}
  .projects-dots{display:flex;justify-content:center;gap:0.5rem;margin-top:1.5rem;}
  .projects-dot{width:8px;height:8px;border-radius:50%;background:rgba(0,212,200,0.2);border:1px solid rgba(0,212,200,0.3);cursor:pointer;transition:all 0.3s;}
  .projects-dot.active{background:var(--teal);box-shadow:0 0 8px rgba(0,212,200,0.5);width:24px;border-radius:4px;}
  .pub-link{display:inline-flex;align-items:center;gap:0.4rem;font-size:0.75rem;color:var(--teal);text-decoration:none;margin-top:0.75rem;transition:opacity 0.2s;}
  .pub-link:hover{opacity:0.7;}
  @media(max-width:900px){.projects-slide{grid-template-columns:1fr 1fr;}.projects-btn.prev{left:-10px;}.projects-btn.next{right:-10px;}}
  @media(max-width:600px){.projects-slide{grid-template-columns:1fr;}}

  #contact{background:var(--navy-mid);}
  .contact-wrap{max-width:700px;margin:0 auto;text-align:center;}
  .contact-wrap .section-tag{justify-content:center;}
  .contact-wrap .section-tag::before{display:none;}
  .contact-links{display:flex;justify-content:center;gap:1.5rem;margin-top:2rem;flex-wrap:wrap;}
  .contact-link{display:flex;align-items:center;gap:0.5rem;padding:0.65rem 1.5rem;border:1px solid rgba(0,212,200,0.2);border-radius:100px;color:var(--white-dim);text-decoration:none;font-size:0.8rem;letter-spacing:0.08em;transition:all 0.3s;}
  .contact-link:hover{border-color:var(--teal);color:var(--teal);background:var(--teal-subtle);}

  footer{padding:2rem 4rem;border-top:1px solid rgba(0,212,200,0.08);display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1;}
  .footer-logo{font-family:'Syne',sans-serif;font-weight:800;font-size:1.1rem;color:var(--teal);letter-spacing:0.1em;}
  .footer-copy{font-size:0.75rem;color:var(--white-subtle);}

  @keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
  .fade-up{opacity:1;transform:none;}

  @media(max-width:1000px){
    nav{padding:1.2rem 2rem;} .nav-links{gap:1.2rem;}
    #hero{padding:7rem 2rem 4rem;} section{padding:5rem 2rem;}
    .hero-layout{grid-template-columns:1fr;} .hero-photo-wrap{display:none;}
    .about-grid,.exp-grid,.teaching-grid,.pub-grid{grid-template-columns:1fr;gap:3rem;}
    .gallery-grid{grid-template-columns:repeat(2,1fr);}
    footer{padding:1.5rem 2rem;flex-direction:column;gap:0.75rem;text-align:center;}
  }
  @media(max-width:600px){.nav-links{display:none;}.gallery-grid{grid-template-columns:1fr;}.hero-stats{gap:2rem;}.admin-gallery-grid{grid-template-columns:repeat(2,1fr);}}
  ::-webkit-scrollbar{width:5px;} ::-webkit-scrollbar-track{background:var(--navy);} ::-webkit-scrollbar-thumb{background:rgba(0,212,200,0.3);border-radius:10px;}