html[data-theme="light"]{
  color-scheme:light;
  --bg:#f7fbff;
  --panel:#ffffff;
  --line:rgba(27,55,92,.16);
  --text:#0f172a;
  --muted:#516173;
  --cyan:#0077b6;
  --blue:#2457d6;
  --magenta:#a43fc4;
}
html[data-theme="light"] body{
  background:radial-gradient(circle at 20% 0,rgba(36,87,214,.16),transparent 36%),linear-gradient(180deg,#f8fbff,#eef5fb 58%,#f7fbff);
  color:var(--text);
}
html[data-theme="light"] body.webgl-fallback:before{
  background:linear-gradient(145deg,rgba(36,87,214,.14),transparent 35%),radial-gradient(circle at 80% 20%,rgba(164,63,196,.1),transparent 28%);
}
html[data-theme="light"] #space-scene{opacity:.38}
html[data-theme="light"] .nav-shell{
  background:rgba(255,255,255,.78);
  border-color:var(--line);
  box-shadow:0 18px 50px rgba(30,60,95,.08);
}
html[data-theme="light"] .brand,
html[data-theme="light"] #site-nav a.active,
html[data-theme="light"] #site-nav a:hover,
html[data-theme="light"] .hero .subtitle,
html[data-theme="light"] .scroll-cue span,
html[data-theme="light"] .card h3,
html[data-theme="light"] .chips h3,
html[data-theme="light"] .timeline h3{color:#0f172a}
html[data-theme="light"] #site-nav a,
html[data-theme="light"] .panel p,
html[data-theme="light"] .scroll-cue{color:var(--muted)}
html[data-theme="light"] .card,
html[data-theme="light"] .chips article,
html[data-theme="light"] .timeline article,
html[data-theme="light"] .stats strong,
html[data-theme="light"] .stats span{
  background:rgba(255,255,255,.82);
  border-color:var(--line);
  box-shadow:0 16px 44px rgba(30,60,95,.08);
}
html[data-theme="light"] .stats strong{color:#0f172a}
html[data-theme="light"] .stats span{color:#475569}
html[data-theme="light"] .actions a,
html[data-theme="light"] .search button,
html[data-theme="light"] .contact-form button{
  background:linear-gradient(135deg,rgba(36,87,214,.12),rgba(0,119,182,.08));
  color:#0f172a;
}
html[data-theme="light"] .search input,
html[data-theme="light"] .contact-form input,
html[data-theme="light"] .contact-form textarea{
  background:rgba(255,255,255,.82);
  color:#0f172a;
}
html[data-theme="light"] .loader{
  background:radial-gradient(circle at 50% 45%,rgba(0,119,182,.13),transparent 20%),radial-gradient(circle at 18% 20%,rgba(36,87,214,.16),transparent 28%),radial-gradient(circle at 82% 74%,rgba(164,63,196,.12),transparent 30%),#f8fbff;
}
html[data-theme="light"] .loader-copy strong{color:#0f172a}
html[data-theme="light"] .loader-status{color:#314159}
.theme-toggle{
  width:38px;
  height:38px;
  display:inline-grid;
  place-items:center;
  border:1px solid var(--line);
  border-radius:8px;
  background:rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
  font-size:17px;
}
html[data-theme="light"] .theme-toggle{background:rgba(15,23,42,.04)}
@media(max-width:900px){
  html[data-theme="light"] #site-nav{background:#ffffff}
}