/* ============ TOKENS ============ */
:root{
  --bg:#FBFAFE;
  --surface:#FFFFFF;
  --ink:#1A1626;
  --ink-soft:#423B54;
  --muted:#766F86;
  --line:#ECE7F6;
  --line-strong:#DDD5EE;

  --accent:#6D28D9;
  --accent-strong:color-mix(in srgb, var(--accent) 80%, #000);
  --accent-soft:color-mix(in srgb, var(--accent) 7%, #fff);
  --accent-line:color-mix(in srgb, var(--accent) 20%, #fff);
  --accent-glow:color-mix(in srgb, var(--accent) 16%, transparent);

  --radius:16px;
  --radius-sm:10px;
  --maxw:1160px;
  --shadow-sm:0 1px 2px rgba(26,22,38,.05), 0 2px 6px rgba(26,22,38,.05);
  --shadow-md:0 10px 34px rgba(76,29,149,.10);
  --shadow-lg:0 24px 60px rgba(76,29,149,.16);

  --font-sans:'Hanken Grotesk', system-ui, sans-serif;
  --font-mono:'JetBrains Mono', ui-monospace, monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(900px 500px at 88% -8%, var(--accent-glow), transparent 60%),
    radial-gradient(700px 480px at -6% 12%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 55%);
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}

/* emphasis word styling — switched via body[data-emph] */
.emph{color:var(--accent);font-style:normal}
body[data-emph="serif"] .emph{font-family:'Instrument Serif',serif;font-style:italic;font-weight:400;letter-spacing:-.005em}
body[data-emph="condensed"] .emph{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.005em}
body[data-emph="bold"] .emph{font-weight:800;letter-spacing:-.02em}

/* ============ LAYOUT ============ */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:32px}
.eyebrow{
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent-strong);
}
section{padding:64px 0}
.sec-head{margin-bottom:38px;max-width:620px}
.sec-head .eyebrow{margin-bottom:14px;display:block}
.sec-head h2{font-size:clamp(30px,4vw,44px);font-weight:700;letter-spacing:-.025em;line-height:1.08}
.sec-head p{color:var(--muted);font-size:17px;margin-top:14px;text-wrap:pretty}

/* ============ NAV ============ */
.nav{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter:saturate(1.2) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 32px;height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;letter-spacing:-.02em;font-size:18px;white-space:nowrap}
.brand .nm{color:var(--ink)}
.brand .bar{color:var(--line-strong);font-weight:400}
.brand b{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;padding:9px 16px;border-radius:999px;font-weight:600;font-size:15px;
  color:var(--ink-soft);transition:color .18s, background .18s;display:flex;align-items:center;gap:6px;
}
.nav-link:hover{color:var(--ink);background:var(--accent-soft)}
.nav-link.active{color:var(--accent);background:var(--accent-soft)}
.nav-link .ext{font-size:11px;opacity:.7}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;gap:9px;cursor:pointer;border:none;
  font-family:inherit;font-weight:600;font-size:15.5px;padding:13px 24px;border-radius:999px;
  transition:transform .14s ease, box-shadow .2s ease, background .2s ease;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 20px var(--accent-glow)}
.btn-primary:hover{background:var(--accent-strong);box-shadow:0 10px 28px var(--accent-glow)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line-strong);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:var(--accent-line);color:var(--accent-strong)}
.btn .arr{transition:transform .18s}
.btn:hover .arr{transform:translateX(3px)}

/* ============ HERO (shared) ============ */
.hero{display:none;padding:72px 0 44px}
body[data-hero="a"] .hero-a{display:block}
body[data-hero="b"] .hero-b{display:block}
body[data-hero="c"] .hero-c{display:block}
.hero h1{font-weight:700;letter-spacing:-.035em;line-height:1.02;color:var(--ink)}
.hero .lead{color:var(--ink-soft);font-size:19px;line-height:1.6;text-wrap:pretty}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}

/* Hero A — editorial split */
.hero-a .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-a h1{font-size:clamp(40px,6vw,72px);margin:20px 0 22px}
.hero-a .lead{max-width:30em}
.hero-a .eyebrow{display:block}
.portrait-card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:14px;
  box-shadow:var(--shadow-lg);
}
.portrait-card image-slot{width:100%;height:340px;border-radius:16px;overflow:hidden;display:block}
.portrait-meta{display:flex;align-items:center;justify-content:space-between;padding:14px 8px 6px}
.portrait-meta .nm{font-weight:700;letter-spacing:-.02em;display:flex;align-items:baseline;gap:7px;flex-wrap:wrap}
.portrait-meta .nm .cred{font-family:var(--font-mono);font-weight:500;font-size:10.5px;letter-spacing:.01em;
  color:var(--accent-strong);white-space:nowrap;
  padding-left:10px;border-left:2px solid var(--accent)}
.portrait-meta .rl{font-size:13px;color:var(--muted)}
.portrait-meta .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
/* portrait extras: links + tenure counter */
.portrait-links{display:flex;flex-direction:column;gap:7px;padding:0 8px 6px}
.portrait-links a{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-soft);transition:color .16s}
.portrait-links a:hover{color:var(--accent-strong)}
.portrait-links a .pl-ic{width:18px;text-align:center;color:var(--accent);font-size:13px;flex-shrink:0}
.tenure{
  margin:2px 8px 6px;padding:8px 4px 0;
  display:flex;align-items:baseline;justify-content:space-between;gap:10px;
  border-top:1px solid var(--line);
}
.tenure .tn-lbl{font-family:var(--font-mono);font-size:9.5px;font-weight:500;letter-spacing:.08em;
  text-transform:uppercase;color:var(--muted);opacity:.85}
.tenure .tn-val{display:flex;align-items:baseline;gap:5px;flex-wrap:nowrap;flex-shrink:0}
.tenure .tn-val .unit{display:flex;align-items:baseline;gap:1px}
.tenure .tn-val .num{font-size:12px;font-weight:600;letter-spacing:-.01em;color:var(--muted);
  font-variant-numeric:tabular-nums}
.tenure .tn-val .suf{font-size:10.5px;font-weight:500;color:var(--muted);opacity:.7}

/* Hero B — centered statement */
.hero-b{text-align:center;padding:84px 0 56px}
.hero-b .eyebrow{display:block;margin-bottom:22px}
.hero-b h1{font-size:clamp(48px,9vw,108px);max-width:14ch;margin:0 auto}
.hero-b .lead{max-width:46ch;margin:26px auto 0}
.hero-b .hero-cta{justify-content:center}

/* Hero C — split with accent panel */
.hero-c .grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:28px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);background:var(--surface)}
.hero-c .left{padding:64px 56px}
.hero-c h1{font-size:clamp(38px,5.2vw,64px);margin:18px 0 22px}
.hero-c .panel{
  background:linear-gradient(160deg, var(--accent), var(--accent-strong));
  color:#fff;padding:64px 52px;display:flex;flex-direction:column;justify-content:space-between;
  position:relative;overflow:hidden;
}
.hero-c .panel::after{content:"";position:absolute;width:360px;height:360px;border-radius:50%;
  right:-120px;bottom:-140px;background:rgba(255,255,255,.12)}
.hero-c .panel .pname{font-size:clamp(28px,3.4vw,40px);font-weight:700;letter-spacing:-.03em;line-height:1.1;
  display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}
.hero-c .panel .pname .cred{font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.01em;
  color:rgba(255,255,255,.85);white-space:nowrap;
  padding-left:11px;border-left:2px solid rgba(255,255,255,.55)}
.hero-c .panel .prole{opacity:.85;margin-top:8px}
.hero-c .panel .plink{
  font-family:var(--font-mono);font-size:14px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  padding:11px 16px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  transition:background .18s;
}
.hero-c .panel .plink:hover{background:rgba(255,255,255,.26)}

/* ============ ABOUT ============ */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
.about-photo image-slot{width:100%;height:420px;border-radius:20px;overflow:hidden;display:block;box-shadow:var(--shadow-md)}
.about-body h2{font-size:clamp(28px,3.6vw,40px);font-weight:700;letter-spacing:-.025em;line-height:1.1;margin-bottom:18px}
.about-body p{color:var(--ink-soft);font-size:17.5px;margin-bottom:16px;text-wrap:pretty}
.about-stats{display:flex;gap:36px;margin-top:28px;flex-wrap:wrap}
.about-stats .st .n{font-size:30px;font-weight:800;letter-spacing:-.03em;color:var(--accent)}
.about-stats .st .l{font-size:13.5px;color:var(--muted)}

/* image-slot placeholder tint */
image-slot{--placeholder-bg:linear-gradient(150deg,var(--accent-soft),color-mix(in srgb,var(--accent) 12%,#fff))}

/* ============ PROJECTS ============ */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.proj{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s, box-shadow .2s, border-color .2s;
  display:flex;flex-direction:column;
}
.proj:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent-line)}
.proj image-slot{width:100%;height:180px;display:block}
.proj .thumb-fallback{width:100%;height:180px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--accent-soft),color-mix(in srgb,var(--accent) 16%,#fff));
  color:var(--accent-strong);font-family:var(--font-mono);font-weight:600;font-size:13px}
.proj .thumb-infinity{font-family:var(--font-sans);font-size:64px;font-weight:300;line-height:1}
.proj .pbody{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.proj .ptag{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.proj h3{font-size:21px;font-weight:700;letter-spacing:-.02em}
.proj p{color:var(--muted);font-size:15px;flex:1}
.proj .plink-row{display:flex;align-items:center;gap:7px;font-weight:600;color:var(--accent);font-size:14.5px;margin-top:4px}
.proj.soon{opacity:.92}
.badge{display:inline-block;font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--accent-strong);background:var(--accent-soft);
  border:1px solid var(--accent-line);padding:4px 9px;border-radius:999px}

/* ============ ENGINEERING EXPERTISE ============ */
.eng-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.eng-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 28px 30px;box-shadow:var(--shadow-sm);transition:transform .2s, box-shadow .2s, border-color .2s}
.eng-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--accent-line)}
.eng-card .sk-h{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.eng-card .sk-ic{width:38px;height:38px;border-radius:10px;background:var(--accent-soft);color:var(--accent-strong);
  display:grid;place-items:center;font-size:19px;flex-shrink:0}
.eng-card h3{font-size:18.5px;font-weight:700;letter-spacing:-.015em}
.eng-card p{color:var(--muted);font-size:14.5px;margin:0 0 16px;text-wrap:pretty}

/* ============ SKILLS ============ */
.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.skill-grid.two{grid-template-columns:1fr 1fr}
.skill-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 28px;box-shadow:var(--shadow-sm)}
.skill-card .sk-h{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.skill-card .sk-ic{width:34px;height:34px;border-radius:9px;background:var(--accent-soft);color:var(--accent-strong);
  display:grid;place-items:center;font-size:17px}
.skill-card h3{font-size:17px;font-weight:700;letter-spacing:-.01em}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-family:var(--font-mono);font-size:12.5px;font-weight:500;color:var(--ink-soft);
  background:var(--bg);border:1px solid var(--line-strong);padding:6px 11px;border-radius:8px;transition:.16s}
.tag:hover{border-color:var(--accent-line);color:var(--accent-strong);background:var(--accent-soft)}

/* ============ RESUME band ============ */
.resume-band{
  background:linear-gradient(155deg, var(--accent), var(--accent-strong));color:#fff;
  border-radius:26px;padding:54px 56px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  flex-wrap:wrap;position:relative;overflow:hidden;box-shadow:var(--shadow-lg);
}
.resume-band::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  right:-160px;top:-200px;background:rgba(255,255,255,.10)}
.resume-band .rt h2{font-size:clamp(26px,3.4vw,38px);font-weight:700;letter-spacing:-.025em;line-height:1.08;position:relative}
.resume-band .rt p{opacity:.86;margin-top:10px;font-size:16.5px;max-width:42ch;position:relative}
.resume-band .btn-white{background:#fff;color:var(--accent-strong);position:relative}
.resume-band .btn-white:hover{background:#f4eeff}

/* ============ CONTACT ============ */
.contact{text-align:center;padding-bottom:40px}
.contact h2{font-size:clamp(34px,5vw,58px);font-weight:700;letter-spacing:-.03em;line-height:1.05;margin:14px 0 10px}
.contact .em{color:var(--accent)}
.contact p{color:var(--muted);font-size:18px;max-width:40ch;margin:0 auto 30px}

/* ============ FOOTER ============ */
.foot{border-top:1px solid var(--line);padding:34px 0;margin-top:40px}
.foot-inner{max-width:var(--maxw);margin:0 auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.foot .brand{font-size:17px}
.foot .muted{color:var(--muted);font-size:14px}

/* ============ PRAXIS view ============ */
.praxis{position:relative;overflow:hidden;min-height:calc(100vh - 68px - 92px);display:grid;place-items:center;text-align:center;padding:80px 0}
.praxis > div{position:relative;z-index:1}
/* background structural-frame watermark — the subtle hint at what Praxis is */
.frame-art{
  position:absolute;left:50%;top:50%;z-index:0;
  width:min(1438px,150vw);height:auto;
  transform:translate(-50%,-50%) rotate(-13deg);transform-origin:center;
  opacity:.28;pointer-events:none;
}
.frame-art .fa-col line,.frame-art .fa-beam line{stroke:url(#fa-grad);stroke-width:3.2;stroke-linecap:round}
.frame-art .fa-brace line{stroke:url(#fa-grad);stroke-width:2.2;stroke-linecap:round}
.frame-art .fa-node circle{fill:url(#fa-grad)}
@media (max-width:760px){.frame-art{opacity:.2}}
.praxis .eyebrow{display:block;margin-bottom:26px}
.praxis h1{font-size:clamp(64px,14vw,180px);font-weight:700;letter-spacing:-.05em;line-height:.92;color:var(--ink)}
.praxis .tba{font-family:'Instrument Serif',serif;font-style:italic;font-size:clamp(26px,4vw,40px);color:var(--accent);margin-top:8px}
.praxis p{color:var(--muted);font-size:18px;max-width:34ch;margin:22px auto 30px}
.praxis .pulse{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:13px;color:var(--ink-soft);
  background:var(--surface);border:1px solid var(--line-strong);padding:9px 16px;border-radius:999px;box-shadow:var(--shadow-sm)}
.praxis .pulse .d{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.8)}}

[hidden]{display:none !important}

/* subtle reveal — never gates visibility (iframes can freeze anims) */
.rv{opacity:1}

/* ============ RESPONSIVE ============ */
@media (max-width:900px){
  .hero-a .grid,.hero-c .grid,.about-grid{grid-template-columns:1fr;gap:36px}
  .hero-c .grid{border-radius:22px}
  .hero-c .left{padding:44px 34px}
  .hero-c .panel{padding:40px 34px}
  .proj-grid,.skill-grid,.skill-grid.two,.eng-grid{grid-template-columns:1fr}
  .nav-links .label-long{display:none}
}
@media (max-width:560px){
  .wrap,.nav-inner,.foot-inner{padding-left:20px;padding-right:20px}
  section{padding:64px 0}
  .resume-band{padding:38px 30px}
  .nav-link{padding:8px 12px;font-size:14px}
}