:root{--bg:#06070d;--surface:#0d0f1a;--border:rgba(255,255,255,.07);--accent:#a78bfa;--accent2:#67e8f9;--dim:#8892a4;--text:#e8eaf0;--white:#fff;--serif:'DM Serif Display',serif;--mono:'DM Mono',monospace;--sans:'DM Sans',sans-serif}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;overflow-y:scroll}
body{background:var(--bg);color:var(--text);font-family:var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
#starfield{position:fixed;inset:0;z-index:0;pointer-events:none}
.page{position:relative;z-index:2}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent2);outline-offset:3px}

/* Nav */
nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 48px;background:rgba(6,7,13,.75);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.nav-logo{font-family:var(--mono);font-size:.85rem;color:var(--accent);letter-spacing:.08em;text-decoration:none}
.nav-links{display:flex;gap:24px;list-style:none}
.nav-links a{font-family:var(--mono);font-size:.78rem;color:var(--dim);text-decoration:none;letter-spacing:.06em;text-transform:uppercase;transition:color .2s;padding-bottom:4px;border-bottom:1px solid transparent;white-space:nowrap}
.nav-links a:hover{color:var(--white)}
.nav-links a.active{color:var(--white);border-bottom-color:var(--accent)}

/* Hero */
#home{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:120px 24px 80px;text-align:center}
.hero-inner{max-width:760px}
.hero-tag{display:inline-block;font-family:var(--mono);font-size:.75rem;color:var(--accent2);letter-spacing:.15em;text-transform:uppercase;margin-bottom:24px;opacity:0;animation:fadeUp .7s ease .2s forwards}
.hero-name{font-family:var(--serif);font-size:clamp(3rem,8vw,5.5rem);line-height:1.05;color:var(--white);margin-bottom:12px;opacity:0;animation:fadeUp .8s ease .4s forwards}
.hero-name em{font-style:italic;color:var(--accent)}
.hero-sub{font-weight:300;font-size:1.05rem;color:var(--dim);max-width:560px;margin:0 auto 40px;line-height:1.7;opacity:0;animation:fadeUp .8s ease .6s forwards}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:44px;opacity:0;animation:fadeUp .8s ease .8s forwards}
.tag{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;padding:6px 14px;border:1px solid var(--border);border-radius:999px;color:var(--dim);background:rgba(255,255,255,.03);text-transform:uppercase;transition:all .2s}
.tag:hover{color:var(--accent);border-color:rgba(167,139,250,.4);background:rgba(167,139,250,.06)}
.hero-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;opacity:0;animation:fadeUp .8s ease 1s forwards}
.btn{font-family:var(--mono);font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;padding:12px 28px;border-radius:6px;transition:all .25s;cursor:pointer;border:none;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:var(--accent);color:#0a0012;font-weight:500}
.btn-primary:hover{background:#c4b5fd;transform:translateY(-2px);box-shadow:0 8px 30px rgba(167,139,250,.3)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{border-color:rgba(255,255,255,.25);background:rgba(255,255,255,.04);transform:translateY(-2px)}

/* Sections */
.sec{padding:90px 24px;max-width:1000px;margin:0 auto;scroll-margin-top:40px}
.page-head{max-width:1000px;margin:0 auto;padding:150px 24px 20px}
.page-head .section-title{margin-bottom:14px}
.page-sub{color:var(--dim);font-weight:300;line-height:1.7;max-width:520px}
.section-label{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent2);margin-bottom:12px;display:block}
.section-title{font-family:var(--serif);font-size:clamp(2rem,4vw,2.8rem);color:var(--white);margin-bottom:48px;line-height:1.1;font-weight:400}
.divider{width:100%;height:1px;background:var(--border);max-width:1000px;margin:0 auto}

/* Projects */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.project-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:28px;transition:all .3s ease;position:relative;overflow:hidden;display:flex;flex-direction:column}
.project-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent2));opacity:0;transition:opacity .3s}
.project-card:hover{border-color:rgba(167,139,250,.3);transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,.5)}
.project-card:hover::before{opacity:1}
.project-icon{font-size:1.4rem;margin-bottom:14px}
.project-name{font-size:.95rem;font-weight:500;color:var(--white);margin-bottom:8px}
.project-desc{font-size:.85rem;color:var(--dim);line-height:1.6;flex:1}
.project-stack,.research-models,.experience-skills{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}
.stack-tag,.exp-tag{font-family:var(--mono);font-size:.65rem;letter-spacing:.05em;padding:3px 9px;border-radius:4px}
.stack-tag{background:rgba(103,232,249,.07);border:1px solid rgba(103,232,249,.15);color:var(--accent2)}
.exp-tag{background:rgba(167,139,250,.07);border:1px solid rgba(167,139,250,.18);color:var(--accent)}
.project-github,.research-github{margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}
.project-github a,.research-github a{font-family:var(--mono);font-size:.72rem;letter-spacing:.07em;text-transform:uppercase;color:var(--dim);text-decoration:none;display:inline-flex;align-items:center;gap:6px;transition:color .2s}
.project-github a:hover,.research-github a:hover{color:var(--accent)}
.project-github svg,.research-github svg{width:14px;height:14px;fill:currentColor;flex-shrink:0}

/* Research */
.research-list,.experience-list{display:flex;flex-direction:column;gap:20px}
.research-item,.experience-item{display:grid;gap:20px;align-items:start;padding:28px;background:var(--surface);border:1px solid var(--border);border-radius:12px;transition:all .25s;position:relative;overflow:hidden}
.research-item{grid-template-columns:48px 1fr}
.experience-item{grid-template-columns:auto 1fr}
.research-item:hover,.experience-item:hover{border-color:rgba(167,139,250,.25);box-shadow:0 10px 40px rgba(0,0,0,.4)}
.research-num{font-family:var(--mono);font-size:1.1rem;color:rgba(167,139,250,.35);font-weight:500;padding-top:2px}
.research-title{font-weight:500;font-size:1rem;color:var(--white);margin-bottom:8px}
.research-desc,.experience-desc{font-size:.85rem;color:var(--dim);line-height:1.65}

/* Experience */
.experience-item::before{content:'';position:absolute;top:0;left:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--accent),var(--accent2));opacity:0;transition:opacity .3s}
.experience-item:hover::before{opacity:1}
.experience-icon{width:44px;height:44px;border-radius:10px;background:rgba(167,139,250,.1);border:1px solid rgba(167,139,250,.2);display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.experience-role{font-weight:500;font-size:1rem;color:var(--white);margin-bottom:4px}
.experience-org{font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;color:var(--accent);margin-bottom:6px}
.experience-period{font-family:var(--mono);font-size:.7rem;letter-spacing:.05em;color:var(--dim);margin-bottom:10px}

/* Activities */
.extra-tabs{display:flex;gap:8px;margin-bottom:32px;flex-wrap:wrap}
.extra-tab{font-family:var(--mono);font-size:.73rem;letter-spacing:.08em;text-transform:uppercase;padding:8px 18px;border-radius:6px;border:1px solid var(--border);background:transparent;color:var(--dim);cursor:pointer;transition:all .2s}
.extra-tab.active,.extra-tab:hover{background:rgba(167,139,250,.1);border-color:rgba(167,139,250,.4);color:var(--accent)}
.extra-panel{display:flex;flex-direction:column;gap:16px;width:100%}
.extra-item{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;padding:22px 24px;background:var(--surface);border:1px solid var(--border);border-radius:10px;transition:all .25s;width:100%;min-width:0}
.extra-item[hidden]{display:none}
.extra-item:hover{border-color:rgba(103,232,249,.25);box-shadow:0 8px 30px rgba(0,0,0,.35)}
.extra-dot{width:8px;height:8px;border-radius:50%;background:var(--accent2);margin-top:7px}
.extra-dot.hackathon{background:var(--accent)}.extra-dot.seminar{background:#f9a84d}.extra-dot.competition{background:#4ade80}.extra-dot.volunteer{background:#f472b6}
.extra-item-title{font-weight:500;font-size:.95rem;color:var(--white);margin-bottom:4px}
.extra-item-meta{font-family:var(--mono);font-size:.72rem;letter-spacing:.05em;color:var(--dim);margin-bottom:6px}
.extra-item-desc{font-size:.83rem;color:var(--dim);line-height:1.6}
.extra-badge{display:inline-block;font-family:var(--mono);font-size:.62rem;letter-spacing:.07em;text-transform:uppercase;padding:2px 8px;border-radius:4px;margin-left:8px;vertical-align:middle}
.badge-workshop{background:rgba(103,232,249,.1);color:var(--accent2);border:1px solid rgba(103,232,249,.2)}
.badge-hackathon{background:rgba(167,139,250,.1);color:var(--accent);border:1px solid rgba(167,139,250,.2)}
.badge-seminar{background:rgba(249,168,77,.1);color:#f9a84d;border:1px solid rgba(249,168,77,.2)}
.badge-competition{background:rgba(74,222,128,.1);color:#4ade80;border:1px solid rgba(74,222,128,.2)}
.badge-volunteer{background:rgba(244,114,182,.1);color:#f472b6;border:1px solid rgba(244,114,182,.2)}
.extra-cert{margin-top:10px}
.extra-cert a{font-family:var(--mono);font-size:.7rem;letter-spacing:.07em;text-transform:uppercase;color:var(--accent2);text-decoration:none;display:inline-flex;align-items:center;gap:5px;border:1px solid rgba(103,232,249,.2);padding:3px 10px;border-radius:4px;background:rgba(103,232,249,.04);transition:all .2s}
.extra-cert a:hover{color:var(--white);border-color:rgba(103,232,249,.5);background:rgba(103,232,249,.1)}
.extra-cert svg{width:11px;height:11px}

/* Hobbies */
.hobbies-compact{display:flex;flex-wrap:wrap;gap:14px}
.hobby-pill{display:flex;align-items:center;gap:10px;padding:12px 20px;background:var(--surface);border:1px solid var(--border);border-radius:10px;transition:all .25s;text-decoration:none}
.hobby-pill:hover{border-color:rgba(167,139,250,.35);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.4)}
.hobby-pill-icon{font-size:1.25rem}
.hobby-pill-name{font-weight:500;font-size:.88rem;color:var(--white)}
.hobby-pill-link{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.contact-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:28px 24px;text-align:center;text-decoration:none;transition:all .25s;display:block}
.contact-item:hover{border-color:rgba(167,139,250,.35);transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,.45)}
.contact-item-icon{font-size:1.6rem;margin-bottom:10px}
.contact-item-label{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);margin-bottom:6px}
.contact-item-value{font-size:.85rem;color:var(--accent);font-weight:500;word-break:break-all}

/* Footer */
footer{border-top:1px solid var(--border);padding:36px 48px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-quote{font-family:var(--serif);font-style:italic;font-size:.9rem;color:var(--dim);max-width:500px;line-height:1.5}
.footer-copy{font-family:var(--mono);font-size:.75rem;color:rgba(255,255,255,.3);letter-spacing:.06em}

/* Motion */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.hero-tag,.hero-name,.hero-sub,.hero-tags,.hero-links{animation:none;opacity:1}html{scroll-behavior:auto}}

@media (max-width:760px){
  nav{padding:14px 20px;gap:14px}
  .nav-links{gap:16px;overflow-x:auto;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .contact-grid{grid-template-columns:1fr}
  footer{flex-direction:column;align-items:flex-start;padding:32px 20px}
  .sec{padding:64px 20px}
  .page-head{padding:120px 20px 10px}
  .research-item{grid-template-columns:1fr;gap:6px}
}

/* CV additions */
.about-text{color:var(--dim);font-weight:300;line-height:1.75;max-width:600px;margin:-20px 0 28px}
#hobbies .about-text{margin:0 0 24px}
.project-meta{font-family:var(--mono);font-size:.68rem;letter-spacing:.05em;color:var(--dim);margin-bottom:10px}
.experience-org a{color:inherit;text-decoration:none;border-bottom:1px dotted rgba(167,139,250,.5)}
.experience-org a:hover{color:var(--white)}
.experience-item .extra-cert{margin-top:14px}
.skill-groups{display:flex;flex-direction:column;gap:20px}
.skill-label{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.skill-group .experience-skills{margin-top:10px}
.research-github{display:flex;flex-wrap:wrap;gap:8px 22px}
.research-github svg{width:14px;height:14px}
.research-github a:nth-child(2) svg{fill:none;stroke:currentColor;stroke-width:2}