:root{
  --bg:#fafaf9;--surface:#fff;--text:#18181b;--muted:#6b6b73;--line:#e7e5e4;--accent:#4f46e5;--accent-soft:rgba(79,70,229,.1);
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;--mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
  box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--bg:#0b0b0d;--surface:#141418;--text:#f4f4f5;--muted:#9a9aa5;--line:#25252b;--accent:#818cf8;--accent-soft:rgba(129,140,248,.14);color-scheme:dark}
}
:root[data-theme="dark"]{--bg:#0b0b0d;--surface:#141418;--text:#f4f4f5;--muted:#9a9aa5;--line:#25252b;--accent:#818cf8;--accent-soft:rgba(129,140,248,.14);color-scheme:dark}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.65;font-size:clamp(1rem,.95rem + .25vw,1.125rem);transition:background .4s,color .4s;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{width:min(100% - 2.5rem,62rem);margin-inline:auto}
section{padding:clamp(4rem,10vw,7rem) 0}
.eyebrow{font-family:var(--mono);font-size:.8rem;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin:0 0 1rem}
h1,h2,h3{line-height:1.15;letter-spacing:-.03em;margin:0}
h2{font-size:clamp(1.75rem,1.2rem + 2vw,2.5rem);margin-bottom:2rem}
p{margin:0 0 1rem;color:var(--muted)}

/* nav */
nav{position:sticky;top:0;z-index:20;padding-top:env(safe-area-inset-top,0px);background:color-mix(in srgb,var(--bg) 80%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:3.75rem}
.logo{font-weight:700;letter-spacing:-.03em}
.logo span{color:var(--accent)}
.links{display:flex;align-items:center;gap:clamp(.9rem,3vw,1.75rem);font-size:.9rem;color:var(--muted)}
.links a{transition:color .2s}.links a:hover{color:var(--text)}
#theme{width:2.25rem;height:2.25rem;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--text);cursor:pointer;display:grid;place-items:center;transition:transform .3s,border-color .2s}
#theme:hover{transform:rotate(25deg);border-color:var(--accent)}
#theme svg{width:1.05rem;height:1.05rem}
.sun{display:none}
:root[data-theme="dark"] .sun{display:block}:root[data-theme="dark"] .moon{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .sun{display:block}:root:not([data-theme="light"]) .moon{display:none}}
@media (max-width:560px){.links a.hide-sm{display:none}}

/* hero */
.hero{min-height:calc(100svh - 3.75rem);display:flex;align-items:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:min(60vw,34rem);aspect-ratio:1;right:-10%;top:10%;background:radial-gradient(circle,var(--accent-soft),transparent 65%);filter:blur(20px);animation:float 12s ease-in-out infinite;pointer-events:none}
@keyframes float{50%{transform:translate(-4%,8%) scale(1.08)}}
h1{font-size:clamp(2.5rem,1.2rem + 6vw,5.25rem);font-weight:700;margin-bottom:1.25rem}
h1 em{font-style:normal;color:var(--accent)}
.lead{font-size:clamp(1.05rem,1rem + .5vw,1.3rem);max-width:38rem}
.cta{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;border-radius:999px;font-weight:500;font-size:.95rem;border:1px solid var(--line);transition:transform .25s,background .25s,border-color .25s}
.btn:hover{transform:translateY(-2px);border-color:var(--accent)}
.btn.primary{background:var(--text);color:var(--bg);border-color:var(--text)}
.btn.primary:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.tag-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:2.25rem}
.chip{font-family:var(--mono);font-size:.78rem;padding:.3rem .7rem;border-radius:999px;border:1px solid var(--line);color:var(--muted);background:var(--surface);transition:color .2s,border-color .2s}
.chip:hover{color:var(--accent);border-color:var(--accent)}

/* about */
.about{display:grid;gap:2.5rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,18rem),1fr))}
.facts{display:grid;gap:1rem;align-content:start}
.fact{padding:1rem 1.25rem;border:1px solid var(--line);border-radius:1rem;background:var(--surface);transition:transform .3s,border-color .3s}
.fact:hover{transform:translateY(-3px);border-color:var(--accent)}
.fact small{display:block;font-family:var(--mono);font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.fact b{font-weight:600}

/* projects */
.grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,17rem),1fr))}
.card{display:flex;flex-direction:column;padding:1.5rem;border:1px solid var(--line);border-radius:1.25rem;background:var(--surface);transition:transform .35s cubic-bezier(.2,.8,.2,1),border-color .3s,box-shadow .3s}
.card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:0 18px 40px -22px var(--accent)}
.card h3{font-size:1.2rem;margin-bottom:.6rem}
.card p{flex:1;font-size:.95rem}
.card .chips{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.5rem}
.num{font-family:var(--mono);font-size:.78rem;color:var(--accent);margin-bottom:1rem}

/* stack */
.stack{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,13rem),1fr))}
.stack h3{font-size:.8rem;font-family:var(--mono);font-weight:500;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:.75rem}
.stack ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.stack li{padding-bottom:.4rem;border-bottom:1px solid var(--line)}

/* contact */
.contact{text-align:center}
.contact h2{font-size:clamp(2rem,1rem + 4.5vw,3.75rem);margin-bottom:1.25rem}
.contact p{max-width:30rem;margin-inline:auto}
.contact .cta{justify-content:center}
footer{padding:2rem 0 3rem;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;justify-content:space-between}

/* animated background */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg .grid-lines{position:absolute;inset:-48px;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:48px 48px;opacity:.55;-webkit-mask-image:radial-gradient(ellipse at 50% 35%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse at 50% 35%,#000 20%,transparent 75%);animation:pan 30s linear infinite}
@keyframes pan{to{transform:translate(48px,48px)}}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.28;will-change:transform}
.b1{width:42vmax;height:42vmax;left:-12vmax;top:-10vmax;background:var(--accent);animation:d1 22s ease-in-out infinite alternate}
.b2{width:36vmax;height:36vmax;right:-10vmax;top:25vh;background:color-mix(in srgb,var(--accent) 45%,#06b6d4);animation:d2 26s ease-in-out infinite alternate}
.b3{width:32vmax;height:32vmax;left:25vw;bottom:-16vmax;background:color-mix(in srgb,var(--accent) 50%,#ec4899);animation:d3 30s ease-in-out infinite alternate}
@keyframes d1{to{transform:translate(18vw,14vh) scale(1.2)}}
@keyframes d2{to{transform:translate(-16vw,-12vh) scale(1.15)}}
@keyframes d3{to{transform:translate(-14vw,-18vh) scale(1.25)}}
#net{position:absolute;inset:0;width:100%;height:100%}

/* motion */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.8,.2,1),transform .8s cubic-bezier(.2,.8,.2,1);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
.hero .reveal{animation:up .9s cubic-bezier(.2,.8,.2,1) both;animation-delay:var(--d,0s);opacity:1;transform:none;transition:none}
@keyframes up{from{opacity:0;transform:translateY(22px)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}.reveal{opacity:1;transform:none}}

/* contact form */
.form{max-width:34rem;margin:2rem auto 1.5rem;text-align:left;display:grid;gap:1rem}
.form .row{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,14rem),1fr))}
.form label{display:grid;gap:.4rem;font-size:.85rem;font-family:var(--mono);color:var(--muted)}
.form input,.form textarea{font:inherit;font-size:1rem;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:.85rem;padding:.8rem 1rem;transition:border-color .2s,box-shadow .2s;resize:vertical}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.form .btn{justify-self:start;cursor:pointer;font-family:inherit}
.form .btn[disabled]{opacity:.6;cursor:wait}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
#form-status{margin:0;min-height:1.5rem;font-size:.9rem}
#form-status.ok{color:#16a34a}#form-status.err{color:#dc2626}