/* Piyush Mishra portfolio: design system */
:root{--navy:#0B1120;--ink:#111827;--blue:#3B82F6;--cyan:#06B6D4;--white:#F8FAFC;--muted:#94A3B8;
--line:rgba(248,250,252,.09);--line2:rgba(248,250,252,.16);--grad:linear-gradient(120deg,var(--blue),var(--cyan));
--fh:'Bricolage Grotesque','Segoe UI',system-ui,sans-serif;--fb:'Instrument Sans','Segoe UI',system-ui,sans-serif;
--ease:cubic-bezier(.2,.8,.2,1);--r:18px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-padding-top:90px;overflow-x:clip}main{overflow-x:clip}
body{background:var(--navy);color:var(--white);font:400 1.05rem/1.7 var(--fb);overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:8px;background:var(--blue);color:#fff;padding:8px 16px;border-radius:8px;z-index:200}.skip:focus{left:8px}
.wrap{max-width:1160px;margin:auto;padding:0 24px;position:relative}
h1,h2,h3,h4{font-family:var(--fh);letter-spacing:-.02em;line-height:1.1}
h1{font-weight:800;font-size:clamp(2.6rem,7vw,5.4rem);letter-spacing:-.035em}
h2{font-weight:700;font-size:clamp(1.8rem,3.6vw,2.7rem);margin-bottom:16px}
h3{font-weight:700;font-size:1.3rem;margin-bottom:8px}
h4{font:600 .95rem var(--fb);color:var(--muted);margin:22px 0 8px}
p+p{margin-top:14px}.muted{color:var(--muted)}.mt{margin-top:28px}
/* background lighting */
.bg{position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(rgba(248,250,252,.03) 1px,transparent 1px) 0 0/56px 56px,linear-gradient(90deg,rgba(248,250,252,.03) 1px,transparent 1px) 0 0/56px 56px;-webkit-mask:radial-gradient(ellipse 80% 70% at 50% 30%,#000,transparent);mask:radial-gradient(ellipse 80% 70% at 50% 30%,#000,transparent)}
.bg i{position:fixed;border-radius:50%;filter:blur(20px);will-change:transform;animation:drift 18s ease-in-out infinite alternate}
.bg i:first-child{width:640px;height:640px;top:-220px;right:-160px;background:radial-gradient(circle,rgba(59,130,246,.28),transparent 65%)}
.bg i:last-child{width:560px;height:560px;bottom:-240px;left:-180px;background:radial-gradient(circle,rgba(6,182,212,.2),transparent 65%);animation-duration:24s;animation-direction:alternate-reverse}
@keyframes drift{to{translate:-50px 40px}}
#bar{position:fixed;top:0;left:0;right:0;height:3px;z-index:120;background:var(--grad);transform:scaleX(0);transform-origin:left}
/* navigation */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(11,17,32,.6);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:background .3s,border-color .3s}
.nav.sc{background:rgba(11,17,32,.88);border-color:var(--line)}
.nav .wrap{display:flex;justify-content:space-between;align-items:center;height:72px}
.logo{display:flex;align-items:center;gap:10px;font:700 1.08rem var(--fh)}.logo img{width:38px;height:38px;object-fit:contain}
.links{display:flex;gap:4px}.links a{position:relative;color:var(--muted);padding:8px 16px;font-weight:500;font-size:.95rem;transition:color .2s}
.links a::after{content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;border-radius:2px;background:var(--grad);scale:0 1;transform-origin:left;transition:scale .4s var(--ease)}
.links a:hover,.links a[aria-current]{color:var(--white)}.links a:hover::after,.links a[aria-current]::after{scale:1 1}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line2);border-radius:12px;background:transparent;cursor:pointer;position:relative}
.burger span{position:absolute;left:12px;right:12px;height:2px;background:var(--white);border-radius:2px;transition:transform .3s var(--ease),top .3s var(--ease)}
.burger span:first-child{top:16px}.burger span:last-child{top:25px}
.burger[aria-expanded=true] span:first-child{top:20px;transform:rotate(45deg)}.burger[aria-expanded=true] span:last-child{top:20px;transform:rotate(-45deg)}
/* buttons */
.btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:12px;border:1px solid var(--line2);background:transparent;color:var(--white);font:600 .95rem var(--fb);cursor:pointer;transition:background .25s,border-color .25s,box-shadow .25s,translate .25s var(--ease)}
.btn:hover{background:rgba(59,130,246,.14);border-color:var(--blue);translate:0 -2px}.btn:active{translate:0 0;scale:.98}
.btn.f{background:var(--grad);border-color:transparent;color:#04101f;box-shadow:0 10px 30px rgba(59,130,246,.3)}.btn.f:hover{box-shadow:0 14px 38px rgba(6,182,212,.4);filter:brightness(1.08)}
.tlink{display:inline-block;color:var(--cyan);font-weight:600;border-bottom:1px solid transparent;transition:border-color .2s}.tlink:hover{border-color:var(--cyan)}
/* hero */
.hero{min-height:100vh;display:flex;align-items:center;padding:120px 0 80px}
.hgrid{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:10px;border:1px solid rgba(6,182,212,.35);background:rgba(6,182,212,.08);color:#a5f3fc;padding:6px 16px;border-radius:999px;font-size:.88rem;font-weight:500;margin-bottom:26px}
.badge i{width:8px;height:8px;border-radius:50%;background:var(--cyan);animation:pulse 2.2s infinite}@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(6,182,212,.6)}70%,100%{box-shadow:0 0 0 9px transparent}}
.ln{display:block;overflow:hidden;padding-bottom:.1em}.ln>span{display:block}
.lead{color:var(--muted);font-size:1.15rem;max-width:560px;margin:22px 0 32px}
.meta{display:flex;gap:36px;flex-wrap:wrap;margin-top:44px;color:var(--muted);font-size:.9rem}.meta b{display:block;font:700 1.9rem var(--fh);color:var(--white);line-height:1.1}
.portrait{position:relative;justify-self:center;width:100%;max-width:400px}
.portrait::before{content:"";position:absolute;inset:-14% -18% -8%;background:radial-gradient(closest-side,rgba(59,130,246,.38),transparent);filter:blur(10px);z-index:-1}
.pimg{aspect-ratio:4/5;border-radius:200px 200px 26px 26px;padding:2px;background:linear-gradient(160deg,var(--blue),rgba(6,182,212,.2) 55%,var(--cyan));overflow:hidden;box-shadow:0 30px 80px rgba(59,130,246,.25)}
.pimg img{width:100%;height:100%;object-fit:cover;border-radius:198px 198px 24px 24px}
.pchip{position:absolute;left:-28px;bottom:26px;max-width:270px;background:rgba(17,24,39,.82);backdrop-filter:blur(14px);border:1px solid var(--line2);border-radius:14px;padding:12px 16px}
.pchip b{display:block;font:700 .92rem/1.3 var(--fh)}.pchip span{color:var(--muted);font-size:.82rem}
.portrait.small{max-width:380px}.portrait.small .pimg{border-radius:26px}.portrait.small .pimg img{border-radius:24px}
/* sections */
.sec{padding:104px 0}.sec.tight{padding-top:24px}.sec.alt{background:linear-gradient(var(--ink),rgba(17,24,39,.55));border-block:1px solid var(--line)}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.shead{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:44px}.shead h2{margin:0}
.phead{padding:150px 0 56px}.phead .lead{margin-bottom:0}
.prose p{color:#cbd5e1}.split>.rv>p{color:#cbd5e1;max-width:60ch}
.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:22px 28px;margin-top:36px}.facts div{border-left:2px solid var(--cyan);padding-left:16px}
.facts dt{color:var(--muted);font-size:.85rem}.facts dd{font:600 1.02rem var(--fh);margin-top:2px}
/* projects */
.proj{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;margin-bottom:96px}.proj:last-child{margin-bottom:0}.proj.flip{grid-template-columns:.85fr 1.15fr}.proj.flip .frame{order:2}
.frame{border:1px solid var(--line2);border-radius:var(--r);background:var(--ink);overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.4),0 0 0 1px rgba(59,130,246,.08);transition:border-color .4s,box-shadow .4s}
.proj:hover .frame,.mini:hover .frame{border-color:rgba(59,130,246,.5);box-shadow:0 30px 80px rgba(59,130,246,.2)}
.fbar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid var(--line);background:rgba(248,250,252,.03)}.fbar span{width:10px;height:10px;border-radius:50%;background:var(--line2)}
.fbar b{margin-left:10px;flex:1;text-align:center;font:500 .78rem var(--fb);color:var(--muted);background:rgba(248,250,252,.05);border-radius:8px;padding:3px 10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.screen{position:relative;aspect-ratio:16/10;overflow:hidden}
.screen>img,.mock{position:absolute;inset:0;width:100%;height:100%;transition:transform .8s var(--ease)}.screen>img{object-fit:cover;object-position:top;z-index:1}
.proj:hover .screen>img,.proj:hover .mock,.mini:hover .mock{transform:scale(1.05)}
.mock{display:flex;flex-direction:column;justify-content:center;gap:12px;padding:12% 12%;background:radial-gradient(circle at 80% 10%,rgba(6,182,212,.25),transparent 55%),linear-gradient(145deg,#16284a,#0c1730)}
.mock em{font:700 clamp(1.3rem,2.6vw,2rem) var(--fh);font-style:normal;margin-bottom:6px}.mock i{display:block;height:10px;border-radius:6px;background:rgba(248,250,252,.12)}.mock i:nth-of-type(2){width:80%}.mock i:nth-of-type(3){width:55%}
.pbody p{color:#cbd5e1}.built{display:grid;gap:8px}.built li{position:relative;padding-left:22px;color:#cbd5e1;font-size:.98rem}.built li::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:2px;background:var(--cyan)}
.pbody .btn{margin-top:26px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.tags li{border:1px solid var(--line2);background:rgba(248,250,252,.04);padding:5px 14px;border-radius:999px;font-size:.86rem;font-weight:500;color:#cbd5e1;transition:border-color .2s,background .2s}.tags li:hover{border-color:var(--blue);background:rgba(59,130,246,.12)}.tags.big li{font-size:.95rem;padding:8px 18px}
.minis{display:grid;grid-template-columns:repeat(2,1fr);gap:40px}.mini h3{margin-top:22px}.mini p{color:#cbd5e1}
/* skills */
.skgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.sk{border-top:2px solid var(--line2);padding-top:22px;position:relative}.sk::before{content:"";position:absolute;left:0;top:-2px;height:2px;width:0;background:var(--grad);transition:width .7s var(--ease)}.sk.in::before,.sk:hover::before{width:100%}.sk p{color:var(--muted)}
/* timeline */
.tl{position:relative;border-left:2px solid var(--line);padding-left:36px}.tl::before{content:"";position:absolute;left:-2px;top:0;bottom:0;width:2px;background:var(--grad);transform-origin:top;transform:scaleY(var(--p,0))}
.tl li{position:relative;padding-bottom:36px}.tl li:last-child{padding-bottom:0}.tl li::before{content:"";position:absolute;left:-45px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--navy);border:3px solid var(--line2);transition:border-color .5s,box-shadow .5s}.tl li.in::before{border-color:var(--cyan);box-shadow:0 0 14px rgba(6,182,212,.7)}
.tl time{display:inline-block;font:600 .88rem var(--fb);color:var(--cyan);margin-right:10px}.tl p{color:var(--muted)}.tl h3{margin-top:6px}
.tl.wide{max-width:820px;margin:0 auto}.tl.compact li{padding-bottom:26px}
.kind{display:inline-block;font:600 .78rem var(--fb);padding:2px 12px;border-radius:999px;border:1px solid}.k-education{color:#93c5fd;border-color:rgba(59,130,246,.5);background:rgba(59,130,246,.1)}.k-training{color:#67e8f9;border-color:rgba(6,182,212,.5);background:rgba(6,182,212,.1)}.k-project{color:#e2e8f0;border-color:var(--line2);background:rgba(248,250,252,.07)}
.legend{display:flex;gap:12px;justify-content:center;margin-bottom:44px}
.note{max-width:820px;margin:48px auto 0;border:1px solid var(--line);border-radius:var(--r);background:var(--ink);padding:24px 28px}.note+.note{margin-top:18px}.note p{color:var(--muted)}
.wide figure,figure.wide{max-width:900px;margin:auto;border-radius:24px;overflow:hidden;border:1px solid var(--line2)}figure.wide img{width:100%;height:auto;transition:transform .9s var(--ease)}figure.wide:hover img{transform:scale(1.04)}
/* cta */
.cta{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;padding:52px;border-radius:26px;border:1px solid transparent;background:linear-gradient(var(--ink),var(--ink)) padding-box,linear-gradient(120deg,rgba(59,130,246,.7),rgba(6,182,212,.7)) border-box;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;right:-80px;top:-120px;width:380px;height:380px;background:radial-gradient(circle,rgba(59,130,246,.22),transparent 65%);pointer-events:none}
.cta h2{margin-bottom:10px}.cta p{color:var(--muted);max-width:46ch}
/* contact */
.clist li a{display:block;padding:16px 0;border-bottom:1px solid var(--line);transition:padding .25s var(--ease),color .2s}.clist li a:hover{padding-left:12px;color:var(--cyan)}.clist b{display:block;font:700 1.05rem var(--fh)}.clist span{color:var(--muted);font-size:.9rem}
.clist+p{margin-top:24px}
form{border:1px solid var(--line2);border-radius:22px;background:var(--ink);padding:34px;display:grid;gap:18px}form h2{font-size:1.6rem;margin-bottom:0}
.field label{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px}
input,select,textarea{width:100%;background:var(--navy);border:1px solid var(--line2);color:var(--white);padding:13px 15px;border-radius:12px;font:inherit;transition:border-color .2s,box-shadow .2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(59,130,246,.2)}
[aria-invalid=true]{border-color:#f87171;box-shadow:0 0 0 4px rgba(248,113,113,.15)}
.err{color:#fca5a5;font-size:.88rem;margin-top:6px;min-height:0}.err:empty{display:none}
#fs{font-size:.95rem;margin:0!important}#fs.ok{color:#67e8f9}#fs.bad{color:#fca5a5}
button[disabled]{opacity:.6;cursor:wait}
/* footer */
footer{border-top:1px solid var(--line);padding:64px 0 28px;color:var(--muted);font-size:.95rem}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}.fgrid p{margin-top:14px;max-width:34ch}.fgrid h2{font:600 .9rem var(--fb);color:var(--white);margin-bottom:12px;letter-spacing:0}.fgrid a:not(.logo){display:block;padding:4px 0;transition:color .2s}.fgrid a:not(.logo):hover{color:var(--cyan)}.fgrid .logo{color:var(--white)}
.fbase{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:44px;padding-top:22px;border-top:1px solid var(--line);font-size:.88rem}.fbase a:hover{color:var(--cyan)}
/* motion: load sequence + scroll reveal */
.js .ln>span{transform:translateY(110%);animation:up 1s var(--ease) forwards}.js .ln:nth-child(2)>span{animation-delay:.1s}.js .ln:nth-child(3)>span{animation-delay:.2s}@keyframes up{to{transform:none}}
.js .badge,.js .hi{opacity:0;translate:0 20px;animation:fi .9s var(--ease) .35s forwards}.js .lead.hi{animation-delay:.5s}.js .btns.hi{animation-delay:.6s}.js .meta.hi{animation-delay:.7s}.js .portrait.hi{animation-delay:.3s}@keyframes fi{to{opacity:1;translate:0 0}}
.js .rv{opacity:0;translate:0 26px;transition:opacity .8s ease,translate .8s var(--ease)}.js .rv.in{opacity:1;translate:0 0;transition-delay:calc(var(--k,0)*90ms)}
.js .rv.proj{translate:0 40px}
/* responsive */
@media(max-width:900px){
.hgrid,.split,.proj,.proj.flip,.minis,.skgrid,.fgrid{grid-template-columns:1fr}
.proj{gap:28px;margin-bottom:72px}.proj.flip .frame{order:0}.split{gap:32px}.hero{padding-top:110px;min-height:auto}.portrait{max-width:320px;margin-top:20px}.pchip{left:-8px}
.sec{padding:76px 0}.phead{padding:120px 0 36px}.facts{grid-template-columns:1fr 1fr}.cta{padding:34px 26px}
.burger{display:block}.links{position:absolute;top:72px;left:0;right:0;flex-direction:column;background:rgba(11,17,32,.97);border-bottom:1px solid var(--line);padding:12px 24px 20px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .25s,transform .25s,visibility .25s}.links.open{opacity:1;visibility:visible;transform:none}.links a{padding:12px 4px}.links a::after{left:4px;right:auto;width:36px}}
@media(max-width:480px){.facts{grid-template-columns:1fr}.meta{gap:24px}form{padding:24px 20px}.legend{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.js .ln>span,.js .badge,.js .hi,.js .rv{opacity:1;translate:none;transform:none}.bg i{animation:none}}

/* seo additions: faq + honeypot */
.hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.faq details{border-bottom:1px solid var(--line2);padding:18px 0}
.faq summary{cursor:pointer;font-family:var(--fh);font-weight:700;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--cyan);font-size:1.4rem;line-height:1;transition:transform .25s var(--ease)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:#cbd5e1;margin-top:12px;max-width:62ch}
.faq details p a{color:var(--cyan);text-decoration:underline}
.faq summary:focus-visible{outline:2px solid var(--cyan);outline-offset:4px;border-radius:6px}