:root{
  --bg:#0a0a0a;
  --bg-2:#0f0f10;
  --text:#e9e9ea;
  --muted:#9b9ca1;
  --line:#1b1b1d;
  --accent:#ffffff;
  --accent-2:#d8d8d8;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow-soft:0 0 18px rgba(255,255,255,.18),0 0 36px rgba(255,255,255,.10);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(1200px 600px at 80% -10%,rgba(255,255,255,.05),transparent 60%),
    radial-gradient(900px 400px at 10% 10%,rgba(255,255,255,.04),transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

html{scroll-behavior:smooth}

/* account for sticky header when using anchor links */
section[id]{scroll-margin-top:84px}

/* Background canvas & scanlines */
#bg{position:fixed;inset:0;z-index:-2;filter:contrast(115%) brightness(110%)}
.scanlines{position:fixed;inset:0;pointer-events:none;z-index:-1;background-image:repeating-linear-gradient(transparent 0 2px,rgba(255,255,255,.03) 2px 3px)}

.site-header{
  position:sticky;top:0;z-index:10;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:16px 24px;background:rgba(10,10,10,.7);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.menu-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;color:var(--text);background:linear-gradient(180deg,var(--bg-2),#0b0b0c);box-shadow:var(--shadow)}
.menu-toggle:hover{border-color:#2a2a2d;color:#fff}
.site-header.is-solid{background:#0a0a0a}
.logo{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:8px;color:var(--accent);text-decoration:none;box-shadow:var(--shadow)}
.glitch{position:relative;font-family:"Space Mono",monospace;font-weight:700;letter-spacing:.5px}
.glitch::before,.glitch::after{content:attr(data-text);position:absolute;left:0;top:0}
.glitch::before{transform:translate(1px,0);color:#999}
.glitch::after{transform:translate(-1px,0);color:#fff;mix-blend-mode:difference;opacity:.6}

.site-nav{display:flex;gap:18px;flex-wrap:wrap}
.site-nav a{color:var(--muted);text-decoration:none;font-weight:600}
.site-nav a:hover{color:var(--accent)}
.site-nav a.active{color:#fff}

.cta-group{display:flex;gap:10px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;color:var(--text);text-decoration:none;background:linear-gradient(180deg,var(--bg-2),#0b0b0c);box-shadow:var(--shadow)}
.icon-btn:hover{border-color:#2a2a2d;color:#fff}

.section{padding:72px 24px;border-top:1px solid var(--line)}
.section:first-of-type{border-top:none}
.section .section-head{display:flex;align-items:center;gap:16px;margin-bottom:24px}
.section h2{margin:0;font-weight:800;letter-spacing:.3px;position:relative;overflow:hidden}
.section h2::after{content:"";position:absolute;inset:0;left:-20%;width:20%;background:linear-gradient(120deg,transparent,rgba(255,255,255,.25),transparent);transform:skewX(-20deg);animation:shine 6s linear infinite}
.section .bar{flex:1;height:1px;background:linear-gradient(90deg,#333,transparent)}
.copy{max-width:950px;color:var(--text);opacity:.9}

.grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;max-width:1200px;margin:0 auto}
@media (max-width: 920px){.grid{grid-template-columns:1fr}}

.hero{padding-top:96px}
.eyebrow{color:var(--muted);text-transform:uppercase;letter-spacing:.2em;font-size:.8rem;margin:0 0 8px 0}
.headline{font-size:clamp(2.4rem,6vw,4.5rem);margin:0;line-height:1.05;font-weight:900;animation:textGlow 4s ease-in-out infinite}
.headline .outline{-webkit-text-stroke:1px #fff;color:transparent}
.lede{max-width:720px;color:var(--muted);font-size:1.05rem}
.hero-cta{display:flex;gap:12px;margin-top:18px}
.btn{display:inline-block;padding:12px 18px;border-radius:10px;border:1px solid var(--line);text-decoration:none;color:var(--text);font-weight:600}
.btn.primary{background:#ffffff;color:#000}
.btn.ghost{background:transparent}
.btn:hover{border-color:#2a2a2d;box-shadow:var(--glow-soft)}

/* Orbital graphic */
.orbital{position:relative;min-height:280px;aspect-ratio:1/1;width:100%;max-width:520px;justify-self:center;border:none;border-radius:16px;padding:0;background:transparent}
.ring{position:absolute;inset:20px;border-radius:50%;border:1px dashed #2a2a2d;animation:spin 24s linear infinite;box-shadow:inset 0 0 0 1px rgba(255,255,255,.02)}
.r2{transform:scale(.7);animation-duration:18s}
.r3{transform:scale(.45);animation-duration:12s}

/* classic glowing dots */
.dot{position:absolute;width:10px;height:10px;border-radius:50%;background:#fff;filter:drop-shadow(0 0 6px rgba(255,255,255,.6))}

/* revolving carriers */
.carrier{position:absolute;inset:0;transform-origin:center;animation:spin 14s linear infinite}
.c1{animation-duration:12s}
.c2{animation-duration:16s}
.c3{animation-duration:20s}
.c1 .dot{top:50%;left:50%;transform:translate(-50%,-50%) translateX(180px)}
.c2 .dot{top:50%;left:50%;transform:translate(-50%,-50%) translateX(125px)}
.c3 .dot{top:50%;left:50%;transform:translate(-50%,-50%) translateX(80px)}

/* stagger phases */
.c1b{animation-delay:-3s}
.c1c{animation-delay:-6s}
.c1d{animation-delay:-9s}
.c2b{animation-delay:-2.5s}
.c2c{animation-delay:-5s}
.c3b{animation-delay:-4s}

@keyframes spin{to{transform:rotate(360deg)}}
@keyframes orbit{0%{transform:translate(0,0)}50%{transform:translate(6px,-6px)}100%{transform:translate(0,0)}}
@keyframes shine{from{left:-30%}to{left:130%}}
@keyframes textGlow{0%,100%{text-shadow:0 0 0 rgba(255,255,255,0)}50%{text-shadow:0 0 16px rgba(255,255,255,.35)}}

/* Mobile adjustments */
@media (max-width: 720px){
  .menu-toggle{display:inline-flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;gap:8px;padding:12px 16px;background:rgba(10,10,10,.95);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line)}
  .site-header.nav-open .site-nav{display:flex}
  .site-nav a{padding:12px 4px;font-size:1rem}
  .cta-group{display:none}
  .orbital{display:none}
  .section{padding:56px 16px}
  .hero{padding-top:72px}
  .hero-cta{flex-wrap:wrap}
  .hero-cta .btn{flex:1 1 100%}
  .lede{font-size:1rem}
}

@media (max-width: 480px){
  .logo{width:36px;height:36px}
  .menu-toggle{width:36px;height:36px}
  .headline{font-size:clamp(1.9rem,10vw,2.6rem)}
  .lede{font-size:.95rem}
}

/* Lists */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none}
.chips li{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:linear-gradient(180deg,var(--bg-2),#0b0b0c);color:var(--accent-2)}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width: 1100px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 720px){.cards{grid-template-columns:1fr}}

.card{padding:18px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,var(--bg-2),#0a0a0a);box-shadow:var(--shadow)}
.card:hover{border-color:#2a2a2d;box-shadow:var(--shadow),var(--glow-soft)}
.card header h3{margin:0 0 4px 0}
.card .meta{color:var(--muted);font-size:.95rem}

/* Certifications */
.cert-grid{align-items:stretch}
.card.cert{display:flex;flex-direction:column;justify-content:space-between}
.bullets{margin:8px 0 0 0}
.bullets li{margin:8px 0}

.tags{display:flex;gap:8px;margin:12px 0 0 0;padding:0;list-style:none}
.tags li{font-size:.85rem;padding:6px 10px;border:1px solid var(--line);border-radius:8px;color:var(--accent-2)}

.timeline{display:grid;gap:16px}

.site-footer{border-top:1px solid var(--line);padding:32px 24px;color:var(--muted)}
.site-footer .grid{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:1200px;margin:0 auto;flex-wrap:wrap}
.site-footer .links{display:flex;gap:16px;flex-wrap:wrap}
.site-footer a{color:var(--muted);text-decoration:none}
.site-footer a:hover{color:#fff}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* A11y */
:focus-visible{outline:2px dashed #fff;outline-offset:2px}

/* Tech stack grid */
.stack-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;max-width:1200px;margin:0 auto}
@media (max-width: 1100px){.stack-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width: 720px){.stack-grid{grid-template-columns:repeat(2,1fr)}}
.stack-card{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:16px;padding:16px;background:linear-gradient(180deg,var(--bg-2),#0a0a0a);box-shadow:var(--shadow);transition:transform .25s ease,border-color .25s ease}
.stack-card::after{content:"";position:absolute;inset:-1px;border-radius:16px;padding:1px;background:linear-gradient(120deg,transparent,rgba(255,255,255,.08),transparent);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .25s}
.stack-card:hover{transform:translateY(-4px);border-color:#2a2a2d;box-shadow:var(--shadow),var(--glow-soft)}
.stack-card:hover::after{opacity:1}
.stack-card .ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#0b0b0c;color:#fff;margin-bottom:10px}
.stack-card h3{margin:0 0 4px 0;font-size:1rem}
.stack-card p{margin:0;color:var(--muted);font-size:.9rem}

/* 3D sphere */
.sphere{position:relative; margin:70px auto 0; width:260px;height:260px;border-radius:50%;transform-style:preserve-3d;animation:rotY 16s linear infinite reverse}
.sphere i{position:absolute;inset:0;display:block;border-radius:50%;transform-style:preserve-3d;backface-visibility:visible;box-shadow:0 0 66px 0 rgba(255,255,255,.1), inset 0 0 66px 0 rgba(255,255,255,.2)}
@keyframes rotY{to{transform:rotateY(360deg) rotateZ(360deg)}}