/* Modern electrical‑engineering themed portfolio */
:root{
  --c-bg:#0b0e13;
  --c-panel:#121622;
  --c-text:#e7edf5;
  --c-muted:#9fb0c8;
  --c-accent:#4dd0ff;
  --c-accent-soft:#7af7d0;
  --c-outline:#2a3347;
  --radius:18px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
@media (prefers-color-scheme: light){
  :root{
    --c-bg:#f6f8fb;
    --c-panel:#ffffff;
    --c-text:#1a2230;
    --c-muted:#4b5a73;
    --c-accent:#006dff;
    --c-accent-soft:#00c4a7;
    --c-outline:#e6eaf2;
  }
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--c-bg);color:var(--c-text);font:16px/1.6 system-ui,Segoe UI,Roboto,Inter,Arial,sans-serif}
a{color:var(--c-accent);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{
  position:sticky;top:0;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 20px;background:rgba(10,12,20,.7);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-outline)
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem}
.brand .logo{width:28px;height:28px}
.brand .accent{color:var(--c-accent)}
.menu{display:flex;gap:16px;list-style:none;margin:0;padding:0;align-items:center}
.menu .cta{padding:.55rem .9rem;border:1px solid var(--c-accent);border-radius:999px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer}
.nav-toggle .bar{display:block;width:22px;height:2px;background:var(--c-text);margin:4px 0;border-radius:2px}
@media (max-width:760px){
  .nav-toggle{display:block}
  .menu{position:fixed;inset:60px 12px auto 12px;padding:16px;border-radius:var(--radius);
    background:var(--c-panel);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;display:none}
  .menu.open{display:flex}
}

.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;padding:48px 20px 24px;max-width:1100px;margin:0 auto}
.hero-copy h1{font-size:clamp(1.8rem,2.5vw,2.6rem);margin:.2rem 0 0}
.hero-copy p{color:var(--c-muted);max-width:60ch}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 18px}
.chips span{border:1px solid var(--c-outline);padding:.35rem .6rem;border-radius:999px}
.btn{display:inline-block;padding:.7rem 1.1rem;border-radius:12px}
.btn.primary{background:var(--c-accent);color:#041018;font-weight:600}
.btn.ghost{border:1px solid var(--c-outline)}
.hero-art{width:100%;height:auto}
.traces path,.traces circle{fill:none;stroke:url(#glow);stroke-width:3;filter:drop-shadow(0 0 8px rgba(77,208,255,.35))}
.traces circle{fill:var(--c-accent);stroke:none}

.panel{max-width:1100px;margin:0 auto;padding:30px 20px}
.panel h2{font-size:1.6rem;margin:8px 0 10px}
.panel .lead{color:var(--c-muted)}

.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:14px}
.about-grid .card{background:var(--c-panel);border:1px solid var(--c-outline);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:0}
.stats dt{font-weight:600;color:var(--c-muted)}
.stats dd{margin:0}
.tools{columns:2}

.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:12px}
.card{background:var(--c-panel);border:1px solid var(--c-outline);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.card .tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:.8rem;border:1px solid var(--c-outline);border-radius:999px;padding:.2rem .5rem;color:var(--c-muted)}
.card .meta{font-size:.85rem;color:var(--c-muted)}
.card .actions{margin-top:auto;display:flex;gap:10px}
.card .actions a{border:1px solid var(--c-outline);padding:.45rem .7rem;border-radius:10px}

.timeline{display:grid;gap:14px;margin-top:12px}
.tl-item{display:grid;grid-template-columns:120px 1fr;gap:12px;align-items:start}
.tl-item .when{color:var(--c-muted);font-variant-numeric:tabular-nums}
.tl-item .where{font-weight:600}
.tl-item .what{color:var(--c-muted)}

.site-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;max-width:1100px;margin:10px auto 40px;padding:0 20px;color:var(--c-muted)}
.foot-icons img{width:22px;height:22px;opacity:.9}

@media (max-width:980px){
  .hero{grid-template-columns:1fr;gap:10px}
  .about-grid{grid-template-columns:1fr}
  .cards-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .cards-grid{grid-template-columns:1fr}
  .tl-item{grid-template-columns:1fr}
}