:root{
  --bg:#07090d; --panel:#0e1219; --line:#1c2431; --text:#e7ecf3; --muted:#8a96a8;
  --accent:#5cffb0; --accent2:#4db8ff;
  --mono:'JetBrains Mono',ui-monospace,monospace; --sans:'Space Grotesk',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.6;overflow-x:hidden}
.mono{font-family:var(--mono)}
a{color:inherit;text-decoration:none}
#bg{position:fixed;inset:0;z-index:0;width:100%;height:100%}
main,footer,.nav{position:relative;z-index:1}

/* loader */
.loader{position:fixed;inset:0;background:var(--bg);z-index:100;display:grid;place-items:center;transition:opacity .6s,visibility .6s}
.loader.done{opacity:0;visibility:hidden}
.loader-text{font-family:var(--mono);color:var(--accent);font-size:1.1rem}
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--accent),var(--accent2));z-index:60}

/* cursor glow */
.cursor{position:fixed;top:0;left:0;width:340px;height:340px;margin:-170px 0 0 -170px;border-radius:50%;
  background:radial-gradient(circle,rgba(92,255,176,.10),transparent 65%);pointer-events:none;z-index:0;will-change:transform}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;
  padding:18px clamp(20px,5vw,64px);z-index:50;backdrop-filter:blur(10px);background:rgba(7,9,13,.55);border-bottom:1px solid rgba(255,255,255,.04)}
.logo{font-family:var(--mono);font-weight:600}.logo span{color:var(--accent)}
.nav nav{display:flex;gap:clamp(12px,3vw,32px)}
.nav nav a{font-size:.9rem;color:var(--muted);transition:color .2s;position:relative}
.nav nav a:hover{color:var(--text)}
.nav nav a::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--accent);transition:width .25s}
.nav nav a:hover::after{width:100%}

/* hero */
.hero{min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding:120px clamp(20px,8vw,120px) 60px;position:relative}
.eyebrow{color:var(--accent);margin-bottom:12px}
h1{font-size:clamp(3rem,10vw,8rem);line-height:1;font-weight:700;letter-spacing:-.03em;position:relative;
  background:linear-gradient(120deg,#fff 30%,var(--accent) 70%,var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent;background-size:200% auto;animation:shine 6s linear infinite}
@keyframes shine{to{background-position:200% center}}
.glitch:hover{animation:shine 6s linear infinite,jitter .25s steps(2) 2}
@keyframes jitter{0%{transform:translate(0)}50%{transform:translate(-3px,2px) skewX(-2deg)}100%{transform:translate(2px,-1px)}}
.role{font-size:clamp(1.1rem,2.6vw,1.8rem);margin:20px 0;color:var(--accent2);min-height:2.2em}
.caret{animation:blink 1s steps(1) infinite;color:var(--accent)}
@keyframes blink{50%{opacity:0}}
.lede{max-width:560px;color:var(--muted);font-size:1.15rem}
.cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px}
.btn{padding:14px 26px;border:1px solid var(--line);border-radius:999px;font-weight:500;transition:background .25s,border-color .25s,color .25s,transform .15s;display:inline-block;will-change:transform}
.btn.primary{background:var(--accent);color:#04120b;border-color:var(--accent)}
@media(hover:hover){.btn:hover{border-color:var(--accent);color:var(--accent)}.btn.primary:hover{background:transparent;color:var(--accent)}}
.btn:active{transform:scale(.96)}
.scroll-hint{position:absolute;bottom:28px;left:clamp(20px,8vw,120px);color:var(--muted);font-size:.8rem;animation:bob 2s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(8px)}}

/* marquee */
.marquee{overflow:hidden;border-block:1px solid var(--line);background:rgba(14,18,25,.7);padding:18px 0}
.marquee-track{display:flex;gap:48px;width:max-content;animation:scroll 40s linear infinite}
.marquee-track span{font-family:var(--mono);font-size:1.1rem;color:var(--muted);white-space:nowrap}
.marquee-track span::before{content:"◆ ";color:var(--accent)}
@keyframes scroll{to{transform:translateX(-50%)}}

/* sections */
.section{padding:clamp(80px,12vw,150px) clamp(20px,8vw,120px);max-width:1300px;margin:auto}
.section-title{font-size:clamp(2rem,5vw,3.4rem);margin-bottom:48px;letter-spacing:-.02em}
.section-title .mono{color:var(--accent);font-size:1rem;margin-right:12px;vertical-align:middle}
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:56px;align-items:center}
.about-text{font-size:1.25rem;color:var(--muted)}.about-text strong{color:var(--accent)}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px;transition:border-color .3s,transform .3s}
.stat:hover,.stat.focus{border-color:var(--accent);transform:translateY(-4px)}
.stat b{display:block;font-size:2.8rem;line-height:1;color:var(--accent);font-family:var(--mono)}
.stat span{color:var(--muted);font-size:.9rem}

/* timeline */
.role-head{margin-bottom:40px}
.role-head h3{font-size:1.6rem}.role-head em{color:var(--accent2);font-style:normal}
.role-head .mono{color:var(--muted);font-size:.85rem}
.timeline{position:relative;padding-left:48px;display:grid;gap:28px}
.line{position:absolute;left:11px;top:0;bottom:0;width:2px;background:var(--line)}
.line-fill{position:absolute;top:0;left:0;width:100%;height:0;background:linear-gradient(var(--accent),var(--accent2))}
.packet{position:absolute;left:-5px;top:0;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 18px 4px var(--accent)}
.node{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px 30px;transition:border-color .3s,box-shadow .3s,opacity .8s,transform .8s cubic-bezier(.2,.7,.2,1);transform-style:preserve-3d}
.node:hover,.node.focus{border-color:var(--accent);box-shadow:0 20px 60px -20px rgba(92,255,176,.25)}
.node .dot{position:absolute;left:-44px;top:34px;width:20px;height:20px;border-radius:50%;background:var(--bg);border:2px solid var(--line);transition:.4s}
.node.in .dot{border-color:var(--accent);box-shadow:0 0 14px var(--accent);background:var(--accent)}
.node h4{font-size:1.35rem}
.node h4 a.ext{color:var(--accent);border-bottom:1px solid transparent;transition:border-color .2s}
.node h4 a.ext:hover{border-color:var(--accent)}
.tag{color:var(--accent2);font-size:.8rem;margin:2px 0 14px}
.node ul{list-style:none;display:grid;gap:8px}
.node li{color:var(--muted);padding-left:20px;position:relative}
.node li::before{content:"›";position:absolute;left:0;color:var(--accent)}
.node li b{color:var(--text)}

/* skills */
.skills{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.skill-group{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px}
.skill-group h5{color:var(--accent);font-weight:400;margin-bottom:14px;font-size:.85rem}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips i{font-style:normal;font-size:.9rem;padding:6px 14px;border:1px solid var(--line);border-radius:999px;transition:.25s;cursor:default}
.chips i{opacity:0}
.skill-group.in .chips i{opacity:1;animation:chipPop .55s cubic-bezier(.2,.9,.3,1.4) calc(var(--i,0)*70ms + 250ms) backwards}
.skill-group.in.focus .chips i{animation:chipPop .55s cubic-bezier(.2,.9,.3,1.4) calc(var(--i,0)*70ms + 250ms) backwards,chipWave 1s ease calc(var(--i,0)*90ms + 700ms) 1}
@keyframes chipPop{from{opacity:0;transform:translateY(14px) scale(.85)}to{opacity:1;transform:none}}
@keyframes chipWave{40%{background:var(--accent);color:#04120b;border-color:var(--accent);transform:translateY(-4px) rotate(-2deg)}}
.chips i:hover,.chips i:active{background:var(--accent);color:#04120b;border-color:var(--accent);transform:translateY(-3px) rotate(-2deg)}
.skill-group.focus{border-color:var(--accent)}
.skill-group,.stat{transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1),border-color .3s}
#certificates{padding-bottom:clamp(20px,4vw,50px)}
#education{padding-top:clamp(20px,4vw,50px)}
.edu{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.edu div{border-left:2px solid var(--accent);padding-left:18px}
.edu b{display:block}.edu span{color:var(--muted);font-size:.95rem}

/* certificates */
.certs{display:grid;gap:20px}
.cert{display:flex;gap:28px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px 30px;position:relative;overflow:hidden;transition:border-color .3s,box-shadow .3s,opacity .8s,transform .8s cubic-bezier(.2,.7,.2,1)}
.cert:hover,.cert.focus{border-color:var(--accent);box-shadow:0 20px 60px -20px rgba(92,255,176,.25)}
.cert::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 40%,rgba(92,255,176,.10) 50%,transparent 60%);transform:translateX(-120%);animation:sweep 5s ease-in-out 1.5s infinite;pointer-events:none}
@keyframes sweep{to{transform:translateX(120%)}}
.cert-badge{flex:none;width:96px;height:96px;border-radius:50%;display:grid;place-items:center;font-weight:600;letter-spacing:.06em;color:#04120b;background:conic-gradient(from 0deg,var(--accent),var(--accent2),var(--accent));animation:spin 12s linear infinite}
.cert-badge{font-size:.8rem}
@keyframes spin{to{filter:hue-rotate(40deg)}}
.cert h4{font-size:1.35rem;margin-bottom:6px}
.cert-meta{color:var(--muted);font-size:.95rem}
.cert-id{color:var(--muted);font-size:.75rem;margin:6px 0 16px;word-break:break-all}
.nav nav .short{display:none}

/* contact */
.contact{text-align:center}
.contact .cta{justify-content:center}
.big{font-size:clamp(1.6rem,4.5vw,3rem);line-height:1.2;max-width:800px;margin:0 auto}
.big em{font-style:normal;color:var(--accent)}
footer{text-align:center;padding:40px 20px;color:var(--muted);font-size:.8rem;border-top:1px solid var(--line)}

@media(max-width:800px){
  .about-grid{grid-template-columns:1fr}
  .nav nav a:nth-child(-n+0){display:none}
  .timeline{padding-left:36px}.node{padding:22px 20px}.node .dot{left:-34px;top:28px}
  .hero{padding-top:100px}.scroll-hint{display:none}
  .btn{padding:13px 22px}.cta .btn{flex:1 1 auto;text-align:center}
  .nav{padding:14px 20px;gap:14px}.nav nav{gap:12px}.nav nav a{font-size:.8rem}
  .stat b{font-size:2.2rem}.stat{padding:18px}
  .about-text{font-size:1.1rem}
  .cert{flex-direction:column;align-items:flex-start;gap:18px;padding:22px 20px}.cert-badge{width:72px;height:72px;font-size:.7rem}
  .nav nav .long{display:none}.nav nav .short{display:inline}
}
@media(hover:none){.cursor{width:220px;height:220px;margin:-110px 0 0 -110px;opacity:0;transition:opacity .4s}.cursor.on{opacity:1}}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal,.chips i{opacity:1;transform:none}
  html{scroll-behavior:auto}
}