/* Shared navigation controls for Max Exam Lab */
a.back-to-site,
.nav a.back-to-site,
.top-actions a.back-to-site {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  box-sizing:border-box;
  padding:0 18px;
  border:1px solid #0c665c;
  border-radius:10px;
  background:#fff;
  color:#0c665c;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:13px;
  font-weight:700;
  line-height:1;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}

a.back-to-site:hover,
.nav a.back-to-site:hover,
.top-actions a.back-to-site:hover {
  background:#eaf6f3;
  border-color:#0a554d;
  color:#083f39;
  box-shadow:0 4px 12px rgba(12,102,92,.12);
}

a.back-to-site:focus-visible,
.nav a.back-to-site:focus-visible,
.top-actions a.back-to-site:focus-visible {
  outline:3px solid rgba(40,124,120,.28);
  outline-offset:2px;
}

a.back-to-site:active,
.nav a.back-to-site:active,
.top-actions a.back-to-site:active {
  transform:translateY(1px);
}

a.back-to-site.back-to-site--floating {
  position:fixed;
  top:18px;
  right:18px;
  z-index:20;
}

@media (max-width:640px) {
  a.back-to-site,
  .nav a.back-to-site,
  .top-actions a.back-to-site {
    min-height:38px;
    padding:0 13px;
    font-size:12px;
  }

  a.back-to-site.back-to-site--floating {
    top:12px;
    right:12px;
  }
}