:root{
  --bg:#ffffff;
  --text:#0b0b0b;
  --muted:#5b5b5b;
  --border:#e9e9e9;
  --panel:#f9f9fb;
  --brand:#101010;
  --accent:#0b5cff;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Space Grotesk",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--text); background:var(--bg); line-height:1.5;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
a:hover{text-decoration:underline}
.skip-link{
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden
}
.skip-link:focus{
  position:fixed; left:16px; top:16px; width:auto; height:auto; padding:8px 12px; background:#000; color:#fff; z-index:1000; border-radius:6px
}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50; backdrop-filter:saturate(180%) blur(8px);
  background:color-mix(in oklab, var(--bg) 88%, transparent);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  max-width:1100px; margin:0 auto; padding:14px 20px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
}
.brand{
  font-weight:700; letter-spacing:0.08em; text-transform:uppercase;
  border:1px solid var(--border); padding:6px 10px; border-radius:999px; background:var(--panel)
}
.nav{display:flex; gap:22px}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--text)}
.menu-btn{display:none; background:#000; color:#fff; border:0; padding:8px 12px; border-radius:999px}

/* Mobile nav */
.mobile-nav{display:none; flex-direction:column; gap:10px; padding:10px 20px 16px; border-bottom:1px solid var(--border)}
.mobile-nav a{color:var(--muted)}

/* Hero */
.hero{
  max-width:1100px; margin:0 auto; padding:82px 20px 44px;
  display:grid; grid-template-columns:1.1fr .9fr; align-items:center; gap:32px;
}
.hero-title{
  font-size: clamp(42px, 7vw, 96px);
  line-height:0.95; letter-spacing:-0.02em; margin:0 0 12px; color:var(--brand)
}
.hero-tagline{font-size: clamp(18px, 2.8vw, 24px); color:var(--muted); margin:0 0 12px}
.hero-meta{display:flex; flex-wrap:wrap; align-items:center; gap:10px; color:#444}
.dot{opacity:.4}

/* Hero media: circular portrait + orb behind */
.hero-visual{
  position:relative; height:auto; min-height:300px;
  display:flex; align-items:center; justify-content:center;
}
.hero-photo{
  width: clamp(180px, 30vw, 320px);
  aspect-ratio: 1 / 1; object-fit: cover; border-radius: 50%;
  border: 2px solid var(--border); box-shadow: 0 12px 28px rgba(0,0,0,.08);
  position: relative; z-index: 1;
}
.orb{
  position:absolute; inset:auto; width: min(92%, 440px);
  aspect-ratio:1/1; border-radius:50%;
  background:
    radial-gradient(120% 120% at 30% 30%, #b3d4ff 0%, #e9efff 40%, #fff 60%),
    conic-gradient(from 180deg at 50% 50%, #d9e6ff, #ffffff, #e1ebff);
  filter:blur(22px) saturate(1.2); opacity:.9; z-index:0; transform: translateX(8%);
}

/* Sections */
.section{max-width:1100px; margin:0 auto; padding:42px 20px}
.section-head{display:flex; align-items:end; justify-content:space-between; margin-bottom:16px}
.section-sub{color:var(--muted)}

/* Projects tabs */
.projects-tabs{display:flex; gap:10px; margin:8px 0 18px; flex-wrap:wrap}
.tab-button{
  appearance:none; border:1px solid var(--border); background:var(--panel); color:#222;
  padding:8px 12px; border-radius:999px; cursor:pointer; font-weight:500;
}
.tab-button:hover{background:#fff}
.tab-button.active{border-color:var(--accent); box-shadow:0 0 0 3px color-mix(in oklab, var(--accent) 20%, transparent)}
.projects-panel[hidden]{display:none}

/* Work cards (support image or text-only) */
.work .case{
  display:grid; grid-template-columns: .9fr 1.1fr; gap:24px;
  padding:22px; border:1px solid var(--border); border-radius:16px; background:var(--panel);
  transition:transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.work .case + .case{margin-top:18px}
.work .case:hover{transform:translateY(-2px); background:#fff; box-shadow:0 8px 24px rgba(0,0,0,.04)}
/* text-only variant (no image column) */
.work .case.text-only{grid-template-columns:1fr}
.case-media{display:block; border-radius:12px; overflow:hidden; border:1px solid var(--border); background:#fff}
.case-media img{width:100%; height:100%; object-fit:cover; transform:scale(1.005); transition:transform .5s ease}
.case:hover .case-media img{transform:scale(1.02)}
.case-title{margin:0 0 6px; font-size: clamp(20px, 2.2vw, 28px)}
.case-desc{margin:0 0 8px; color:var(--muted)}
.case-meta{margin:0 0 10px; color:#555; font-size:14px}
.case-actions{display:flex; gap:16px}
.arrow{display:inline-flex; align-items:center; gap:6px; font-weight:500}
.arrow span{transition:transform .2s ease}
.arrow:hover span{transform:translateX(4px)}

/* Skills */
.chips{list-style:none; padding:0; margin:0; display:flex; flex-wrap:wrap; gap:10px}
.chips li{border:1px solid var(--border); border-radius:999px; padding:8px 12px; background:var(--panel); color:#444}

/* Timelines */
.timeline{display:flex; flex-direction:column; gap:16px}
.t-item{border-left:3px solid var(--accent); padding-left:12px; background:transparent}
.t-head{display:flex; align-items:baseline; justify-content:space-between; gap:10px}
.t-item .time{color:#666; font-size:14px}
.t-item ul{margin:6px 0 0 0; padding-left:18px}

/* Cert badges + clickable links */
.badges{list-style:none; padding:0; margin:0; display:flex; flex-wrap:wrap; gap:10px}
.badges li{border:1px solid var(--border); border-radius:10px; background:#fff; color:#333}
.certs-list .cert-link{
  display:inline-block; padding:10px 12px; border-radius:10px;
  text-decoration:none; border:1px solid transparent;
}
.certs-list .cert-link:hover{border-color:var(--border); background:var(--panel)}

/* About */
.about .about-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:24px; align-items:start}
.about-text p{margin:0 0 10px; color:#333}
.about-media{
  border:0; border-radius:0; overflow:visible;
  display:flex; align-items:center; justify-content:center; padding:12px 0;
}
.about-media img{
  width: clamp(180px, 28vw, 320px);
  aspect-ratio: 1 / 1; object-fit: cover; border-radius: 50%;
  border: 2px solid var(--border); box-shadow: 0 10px 28px rgba(0,0,0,.08);
}
/* About lists formatting */
.about-text ul{margin:8px 0 14px 18px; color:#333}
.about-text ul li{margin:4px 0}

/* Lightbox (for certifications) */
.lightbox{
  position:fixed; inset:0; background:rgba(0,0,0,.64);
  display:none; align-items:center; justify-content:center; padding:24px;
}
.lightbox.open{display:flex}
.lightbox-figure{margin:0; max-width:90vw; max-height:85vh; display:flex; flex-direction:column; gap:10px}
#lightboxImg{max-width:100%; max-height:80vh; object-fit:contain; border-radius:10px; background:#fff}
.lightbox-caption{color:#fff; text-align:center; font-size:14px}
.lightbox-close{
  position:absolute; top:16px; right:16px; width:40px; height:40px;
  border-radius:999px; background:#fff; color:#000; border:1px solid var(--border); font-size:22px; cursor:pointer
}

/* Buttons shared (used in footer CTAs too) */
.btn{display:inline-block; border:1px solid var(--border); border-radius:999px; padding:10px 14px; background:#fff; color:#000}
.btn.primary{background:var(--text); color:#fff; border-color:#000}

/* Footer (merged with Contact) */
.site-footer{border-top:1px solid var(--border); background:var(--panel)}
.site-footer .foot-inner{
  max-width:1100px; margin:0 auto; padding:22px 20px 26px;
}
.foot-cta{
  border:1px solid var(--border); border-radius:16px; padding:28px;
  background:#fff; display:flex; flex-direction:column; gap:14px;
}
.foot-actions{display:flex; gap:10px; flex-wrap:wrap}
.foot-contact{display:flex; align-items:center; gap:10px; flex-wrap:wrap}
.pill-link, .foot-email{
  color:#0b5cff; text-decoration:none; padding:6px 10px;
  border:1px solid var(--border); border-radius:999px; background:#fff; font-size:14px;
}
.pill-link:hover, .foot-email:hover{
  text-decoration:none; background:var(--panel);
  border-color:color-mix(in oklab, var(--accent) 30%, var(--border));
}
.foot-socials, .foot-labs{
  display:flex; align-items:center; gap:10px; flex-wrap:wrap; color:#444;
}
.lab-link{
  display:inline-flex; align-items:center; gap:8px; padding:6px 10px;
  border:1px solid var(--border); border-radius:999px; background:#fff;
  text-decoration:none; color:#111; font-size:14px;
}
.lab-link:hover{
  background:var(--panel);
  border-color:color-mix(in oklab, var(--accent) 30%, var(--border));
}
.foot-note{color:#666; font-size:14px; margin-top:4px}

/* Reveal */
.reveal{opacity:0; transform:translateY(10px)}
.reveal.in{opacity:1; transform:none; transition:opacity .6s ease, transform .6s ease}

/* Responsive */
@media (max-width: 900px){
  .hero{grid-template-columns:1fr}
  .hero-visual{min-height:240px}
  .about .about-grid{grid-template-columns:1fr}
  .about-media img{width:220px; margin:0 auto}
  .work .case{grid-template-columns:1fr}
  .foot-cta{padding:22px}
  .nav{display:none}
  .menu-btn{display:inline-block}
  .mobile-nav.open{display:flex}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important; transition:none !important; scroll-behavior:auto}
}