*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter','Poppins',sans-serif;background:#04070f;color:#cbd5e1;overflow-x:hidden}
p{line-height:1.75}
img{max-width:100%}

/* ── CANVAS ── */
#bg-canvas{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}

/* ── NAV ── */
.vk-nav{position:fixed;top:0;width:100%;z-index:200;background:rgba(4,7,15,0.82);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,180,0,0.08)}
.vk-nav-inner{max-width:1280px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:60px}
.vk-logo{font-size:1.4rem;font-weight:900;letter-spacing:-0.02em;color:#fff;text-decoration:none}
.vk-logo span{color:#f59e0b}
.vk-links{display:flex;align-items:center;gap:28px}
.vk-link{font-size:0.78rem;font-weight:500;color:#64748b;text-decoration:none;letter-spacing:0.04em;transition:color 0.2s;position:relative;padding-bottom:2px}
.vk-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:1.5px;background:#f59e0b;transition:width 0.25s}
.vk-link:hover,.vk-link.active{color:#f8fafc}
.vk-link:hover::after,.vk-link.active::after{width:100%}
.vk-hamburger{display:none;background:none;border:none;color:#94a3b8;font-size:1.2rem;cursor:pointer;padding:6px}
.vk-mobile-menu{display:none;position:absolute;top:60px;left:0;right:0;background:rgba(4,7,15,0.97);border-bottom:1px solid rgba(255,180,0,0.1);padding:16px 24px;flex-direction:column;gap:4px}
.vk-mobile-menu.open{display:flex}
.vk-mobile-link{display:block;padding:10px 0;font-size:0.85rem;color:#94a3b8;text-decoration:none;border-bottom:1px solid rgba(255,255,255,0.04)}
.vk-mobile-link:hover{color:#f59e0b}

/* ── HERO ── */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding-top:60px;overflow:hidden}
.hero-inner{max-width:1280px;margin:0 auto;padding:60px 24px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;width:100%;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(245,158,11,0.08);border:1px solid rgba(245,158,11,0.22);color:#fbbf24;padding:5px 14px;border-radius:999px;font-size:0.72rem;font-weight:600;letter-spacing:0.06em;text-transform:uppercase;margin-bottom:20px}
.hero-badge .pulse{width:7px;height:7px;background:#10b981;border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.4)}}
.hero-name{font-size:clamp(2.4rem,5vw,3.8rem);font-weight:900;line-height:1.05;color:#f8fafc;letter-spacing:-0.03em;margin-bottom:12px}
.hero-name .accent{background:linear-gradient(135deg,#f59e0b 0%,#fbbf24 40%,#06b6d4 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-typed{font-size:1.15rem;font-weight:500;color:#94a3b8;min-height:1.8rem;margin-bottom:20px}
.cursor{display:inline-block;width:2px;height:1.1em;background:#f59e0b;margin-left:2px;vertical-align:middle;animation:blink 1s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
.hero-desc{font-size:0.9rem;color:#64748b;line-height:1.8;max-width:520px;margin-bottom:28px}
.hero-desc strong{color:#cbd5e1}
.hero-ctas{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.btn-amber{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#f59e0b,#d97706);color:#0a0a0a;font-weight:700;font-size:0.82rem;padding:11px 22px;border-radius:8px;text-decoration:none;transition:all 0.2s;border:none;cursor:pointer;letter-spacing:0.02em}
.btn-amber:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,0.35)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.04);color:#94a3b8;font-weight:600;font-size:0.82rem;padding:10px 20px;border-radius:8px;text-decoration:none;transition:all 0.2s;border:1px solid rgba(255,255,255,0.1)}
.btn-ghost:hover{color:#f8fafc;border-color:rgba(255,255,255,0.25);transform:translateY(-2px)}
.hero-stats{display:flex;gap:28px;flex-wrap:wrap}
.stat{text-align:left}
.stat-n{font-size:1.6rem;font-weight:800;color:#f8fafc;line-height:1;background:linear-gradient(135deg,#f59e0b,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-l{font-size:0.68rem;color:#475569;letter-spacing:0.05em;margin-top:3px;font-weight:500;text-transform:uppercase}
.hero-photo-wrap{display:flex;justify-content:center;align-items:center;position:relative}
.hero-photo-ring{position:relative;display:inline-block}
.hero-photo-ring::before{content:'';position:absolute;inset:-4px;border-radius:50%;background:conic-gradient(#f59e0b,#06b6d4,#8b5cf6,#f59e0b);animation:spin 6s linear infinite}
.hero-photo-ring::after{content:'';position:absolute;inset:-2px;border-radius:50%;background:#04070f}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-photo-ring img{position:relative;z-index:1;width:240px;height:240px;border-radius:50%;object-fit:cover;display:block}

/* ── SECTIONS ── */
.sec{padding:80px 0;position:relative;z-index:1}
.sec-alt{background:rgba(8,12,24,0.6)}
.sec-inner{max-width:1280px;margin:0 auto;padding:0 24px}
.sec-eyebrow{display:inline-block;font-size:0.68rem;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:#f59e0b;background:rgba(245,158,11,0.08);border:1px solid rgba(245,158,11,0.18);padding:3px 12px;border-radius:999px;margin-bottom:10px}
.sec-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:#f1f5f9;margin-bottom:6px;letter-spacing:-0.02em}
.sec-bar{width:36px;height:3px;background:linear-gradient(90deg,#f59e0b,#06b6d4);border-radius:2px;margin-bottom:48px}

/* ── CARDS ── */
.card{background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);border-radius:14px;transition:all 0.28s}
.card:hover{border-color:rgba(245,158,11,0.2);transform:translateY(-4px);background:rgba(255,255,255,0.04);box-shadow:0 16px 40px rgba(0,0,0,0.4)}

/* ── ABOUT ── */
.about-grid{display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:start}
.about-text{font-size:0.88rem;color:#64748b;line-height:1.9;margin-bottom:16px}
.about-text strong{color:#cbd5e1}
.socials{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.soc-btn{width:40px;height:40px;border-radius:9px;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.07);color:#64748b;font-size:0.95rem;display:flex;align-items:center;justify-content:center;text-decoration:none;transition:all 0.2s}
.soc-btn:hover{transform:translateY(-3px)}
.soc-btn.li:hover{background:rgba(10,102,194,0.15);border-color:rgba(10,102,194,0.3);color:#60a5fa}
.soc-btn.gh:hover{background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.2);color:#f1f5f9}
.soc-btn.kg:hover{background:rgba(32,154,207,0.15);border-color:rgba(32,154,207,0.3);color:#7dd3fc}
.soc-btn.md:hover{background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.2);color:#f1f5f9}
.soc-btn.tw:hover{background:rgba(29,161,242,0.12);border-color:rgba(29,161,242,0.3);color:#7dd3fc}
.soc-btn.em:hover{background:rgba(239,68,68,0.12);border-color:rgba(239,68,68,0.3);color:#fca5a5}
.info-cards{display:flex;flex-direction:column;gap:10px}
.info-card{padding:14px 16px;border-radius:10px;background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.05);display:flex;align-items:center;gap:12px}
.info-icon{width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:0.85rem;flex-shrink:0}
.info-label{font-size:0.65rem;color:#475569;text-transform:uppercase;letter-spacing:0.06em}
.info-val{font-size:0.82rem;color:#cbd5e1;font-weight:500;margin-top:1px}

/* ── EXPERIENCE TIMELINE ── */
.timeline{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.exp-card{background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);border-radius:16px;padding:24px;transition:all 0.28s}
.exp-card:hover{border-color:rgba(245,158,11,0.18);box-shadow:0 12px 36px rgba(0,0,0,0.35)}
.exp-header{display:flex;align-items:center;gap:12px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,0.05)}
.exp-logo{width:48px;height:48px;object-fit:contain;border-radius:8px;background:rgba(255,255,255,0.05);padding:4px;flex-shrink:0}
.exp-role{font-size:0.95rem;font-weight:700;color:#f1f5f9}
.exp-company{font-size:0.72rem;font-weight:600;color:#f59e0b;margin-top:2px;letter-spacing:0.03em}
.exp-period{font-size:0.68rem;color:#475569;margin-top:2px}
.proj-item{margin-bottom:14px;padding:11px 13px;border-radius:8px;border-left:2px solid rgba(245,158,11,0.35);background:rgba(245,158,11,0.025)}
.proj-item.purple{border-left-color:rgba(139,92,246,0.4);background:rgba(139,92,246,0.025)}
.proj-name{font-size:0.8rem;font-weight:700;color:#e2e8f0;margin-bottom:3px}
.proj-tech{font-size:0.68rem;color:#f59e0b;font-weight:500;margin-bottom:5px}
.proj-item.purple .proj-tech{color:#a78bfa}
.proj-desc{font-size:0.75rem;color:#64748b;line-height:1.6}
.proj-desc strong{color:#94a3b8}

/* ── EDUCATION ── */
.edu-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.edu-card{padding:24px;border-radius:14px;background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);display:flex;gap:16px;align-items:flex-start;transition:all 0.28s}
.edu-card:hover{border-color:rgba(245,158,11,0.18);transform:translateY(-3px)}
.edu-logo{width:52px;height:52px;object-fit:contain;background:rgba(255,255,255,0.05);border-radius:10px;padding:4px;flex-shrink:0}
.edu-degree{font-size:0.9rem;font-weight:700;color:#f1f5f9;margin-bottom:4px}
.edu-school{font-size:0.72rem;color:#f59e0b;font-weight:600;margin-bottom:4px}
.edu-period{font-size:0.68rem;color:#475569;margin-bottom:8px}
.edu-course{font-size:0.72rem;color:#475569;line-height:1.6}
.edu-course strong{color:#64748b}

/* ── SKILLS ── */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.skill-card{padding:18px;border-radius:12px;background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);transition:all 0.28s}
.skill-card:hover{border-color:rgba(6,182,212,0.2);transform:translateY(-3px)}
.skill-card-header{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.skill-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:0.8rem;flex-shrink:0}
.skill-cat{font-size:0.78rem;font-weight:700;color:#e2e8f0}
.pills{display:flex;flex-wrap:wrap;gap:6px}
.pill{font-size:0.68rem;font-weight:500;padding:3px 9px;border-radius:5px;border:1px solid rgba(6,182,212,0.18);color:#67e8f9;background:rgba(6,182,212,0.05);transition:all 0.2s}
.pill:hover{background:rgba(6,182,212,0.12);border-color:rgba(6,182,212,0.35)}

/* ── PUBLICATIONS ── */
.pubs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pub-card{padding:20px;border-radius:12px;background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);cursor:pointer;transition:all 0.28s;display:flex;flex-direction:column}
.pub-card:hover{border-color:rgba(245,158,11,0.25);transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,0.4)}
.pub-venue-badge{display:inline-block;font-size:0.65rem;font-weight:700;letter-spacing:0.05em;padding:3px 9px;border-radius:999px;text-transform:uppercase;margin-bottom:10px}
.badge-arxiv{background:rgba(220,38,38,0.1);color:#fca5a5;border:1px solid rgba(220,38,38,0.2)}
.badge-ieee{background:rgba(59,130,246,0.1);color:#93c5fd;border:1px solid rgba(59,130,246,0.2)}
.badge-irjiet{background:rgba(16,185,129,0.1);color:#6ee7b7;border:1px solid rgba(16,185,129,0.2)}
.pub-title{font-size:0.85rem;font-weight:700;color:#e2e8f0;margin-bottom:6px}
.pub-sub{font-size:0.72rem;color:#475569;line-height:1.5;flex:1;margin-bottom:12px}
.pub-read{font-size:0.72rem;font-weight:600;color:#f59e0b}
.pub-img{width:48px;height:48px;object-fit:contain;margin-bottom:10px}

/* ── CERTS ── */
.certs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.cert-card{padding:18px;border-radius:12px;background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);cursor:pointer;transition:all 0.28s;display:flex;flex-direction:column}
.cert-card:hover{border-color:rgba(245,158,11,0.25);transform:translateY(-4px);box-shadow:0 10px 28px rgba(0,0,0,0.35)}
.cert-logo{height:36px;object-fit:contain;margin-bottom:12px}
.cert-name{font-size:0.82rem;font-weight:700;color:#e2e8f0;margin-bottom:4px}
.cert-issuer{font-size:0.7rem;color:#475569;margin-bottom:12px;flex:1}
.cert-view{font-size:0.7rem;font-weight:600;color:#f59e0b}

/* ── OSS ── */
.oss-wrap{border-radius:18px;overflow:hidden;border:1px solid rgba(245,158,11,0.12);background:rgba(8,12,24,0.8)}
.oss-grid{display:grid;grid-template-columns:3fr 2fr}
.oss-left{padding:36px}
.oss-icon-wrap{width:56px;height:56px;border-radius:14px;background:rgba(245,158,11,0.1);border:1px solid rgba(245,158,11,0.2);display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:#f59e0b;margin-bottom:16px}
.oss-name{font-size:1.8rem;font-weight:900;color:#f1f5f9;margin-bottom:6px}
.oss-badges{display:flex;gap:8px;margin-bottom:16px}
.oss-badge{font-size:0.65rem;font-weight:700;padding:3px 10px;border-radius:999px;letter-spacing:0.05em;text-transform:uppercase}
.oss-badge-blue{background:rgba(59,130,246,0.1);color:#93c5fd;border:1px solid rgba(59,130,246,0.2)}
.oss-badge-green{background:rgba(16,185,129,0.1);color:#6ee7b7;border:1px solid rgba(16,185,129,0.2)}
.oss-desc{font-size:0.85rem;color:#64748b;line-height:1.8;margin-bottom:12px}
.oss-roadmap{font-size:0.75rem;color:#475569;margin-bottom:20px}
.oss-roadmap strong{color:#f59e0b}
.oss-checks{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:24px}
.oss-check{font-size:0.75rem;color:#64748b;display:flex;align-items:center;gap:6px}
.oss-check i{color:#10b981;font-size:0.65rem}
.oss-btns{display:flex;gap:10px;flex-wrap:wrap}
.oss-right{padding:36px;border-left:1px solid rgba(245,158,11,0.08);display:flex;align-items:center}
.code-block{background:#060910;border-radius:12px;padding:20px;font-family:'Fira Code','Courier New',monospace;font-size:0.78rem;line-height:1.9;width:100%;border:1px solid rgba(255,255,255,0.05)}

/* ── PROJECTS ── */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.project-card{border-radius:14px;overflow:hidden;background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);cursor:pointer;transition:all 0.28s}
.project-card:hover{transform:translateY(-5px);border-color:rgba(245,158,11,0.2);box-shadow:0 14px 40px rgba(0,0,0,0.45)}
.proj-thumb-wrap{position:relative;overflow:hidden}
.proj-thumb{width:100%;height:170px;object-fit:cover;display:block;transition:transform 0.4s}
.project-card:hover .proj-thumb{transform:scale(1.06)}
.proj-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(4,7,15,0.95) 0%,transparent 100%)}
.proj-body{padding:16px}
.proj-tags{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:8px}
.proj-tag-pill{font-size:0.63rem;font-weight:600;padding:2px 8px;border-radius:4px;background:rgba(245,158,11,0.08);border:1px solid rgba(245,158,11,0.18);color:#fbbf24}
.proj-title{font-size:0.85rem;font-weight:700;color:#e2e8f0;margin-bottom:6px}
.proj-brief{font-size:0.72rem;color:#475569;line-height:1.55}
.proj-footer{display:flex;gap:6px;margin-top:12px}
.proj-link{font-size:0.7rem;font-weight:600;padding:4px 10px;border-radius:6px;text-decoration:none;transition:all 0.2s;display:inline-flex;align-items:center;gap:5px}
.proj-link.demo{background:rgba(245,158,11,0.1);border:1px solid rgba(245,158,11,0.2);color:#fbbf24}
.proj-link.demo:hover{background:rgba(245,158,11,0.2)}
.proj-link.code{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.1);color:#94a3b8}
.proj-link.code:hover{background:rgba(255,255,255,0.08);color:#f1f5f9}

/* ── MODAL ── */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(2,4,10,0.88);z-index:500;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(8px)}
.modal-overlay.open{display:flex}
.modal-box{background:#080d1a;border:1px solid rgba(245,158,11,0.15);border-radius:18px;max-width:640px;width:100%;max-height:85vh;overflow-y:auto;position:relative;padding:32px}
.modal-close{position:absolute;top:16px;right:16px;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.08);border-radius:8px;color:#94a3b8;width:34px;height:34px;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:all 0.2s}
.modal-close:hover{background:rgba(239,68,68,0.1);border-color:rgba(239,68,68,0.3);color:#fca5a5}
.modal-logo{height:48px;object-fit:contain;margin-bottom:14px}
.modal-title{font-size:1.15rem;font-weight:800;color:#f1f5f9;margin-bottom:6px}
.modal-sub{font-size:0.78rem;color:#475569;margin-bottom:16px}
.modal-body{font-size:0.82rem;color:#64748b;line-height:1.8;margin-bottom:20px}
.modal-cta{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#f59e0b,#d97706);color:#0a0a0a;font-weight:700;font-size:0.8rem;padding:10px 20px;border-radius:8px;text-decoration:none;margin-top:4px}
.modal-cta:hover{opacity:0.9;transform:translateY(-1px)}
.modal-img{width:100%;border-radius:10px;margin-bottom:16px;object-fit:cover;max-height:200px}

/* ── CONTACT ── */
.contact-wrap{max-width:560px}
.contact-desc{font-size:0.88rem;color:#475569;line-height:1.8;margin-bottom:24px}
.contact-email{display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:12px;background:rgba(255,255,255,0.025);border:1px solid rgba(255,255,255,0.06);margin-bottom:20px}
.contact-email-icon{width:38px;height:38px;border-radius:9px;background:rgba(239,68,68,0.1);display:flex;align-items:center;justify-content:center;color:#f87171;flex-shrink:0}
.contact-email-label{font-size:0.65rem;color:#475569;text-transform:uppercase;letter-spacing:0.07em}
.contact-email-val{font-size:0.85rem;color:#cbd5e1;font-weight:500}
.contact-socials{display:flex;flex-wrap:wrap;gap:10px}

/* ── FOOTER ── */
footer{background:rgba(2,4,10,0.9);border-top:1px solid rgba(245,158,11,0.06);padding:22px 24px;text-align:center;color:#1e293b;font-size:0.75rem;position:relative;z-index:1}
footer span{color:#334155}

/* ── SCROLL ANIM ── */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 0.65s ease,transform 0.65s ease}
.reveal.in{opacity:1;transform:translateY(0)}

/* ── RESPONSIVE ── */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;text-align:center;gap:40px}
  .hero-photo-wrap{order:-1}
  .hero-ctas{justify-content:center}
  .hero-stats{justify-content:center}
  .about-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .edu-grid{grid-template-columns:1fr}
  .skills-grid{grid-template-columns:repeat(2,1fr)}
  .pubs-grid{grid-template-columns:1fr 1fr}
  .certs-grid{grid-template-columns:1fr 1fr}
  .oss-grid{grid-template-columns:1fr}
  .oss-right{border-left:none;border-top:1px solid rgba(245,158,11,0.08)}
  .proj-grid{grid-template-columns:repeat(2,1fr)}
  .hero-desc{margin:0 auto 28px}
}
@media(max-width:768px){
  .vk-links{display:none}
  .vk-hamburger{display:block}
  .hero-photo-ring img{width:180px;height:180px}
  .skills-grid{grid-template-columns:1fr}
  .pubs-grid{grid-template-columns:1fr}
  .certs-grid{grid-template-columns:1fr}
  .proj-grid{grid-template-columns:1fr}
  .sec{padding:56px 0}
  .modal-box{padding:22px;max-height:92vh}
}