/* Spójny nagłówek podstron — powrót do strony głównej + przełącznik języka.
   Adaptacyjny (color: inherit) → działa na jasnych (handouty) i ciemnych (quizy) tłach. */
.site-subnav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  margin: 0 0 1.5rem; padding-bottom: 10px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.28);
  font-family: 'Inter', system-ui, sans-serif;
}
.site-subnav a { text-decoration: none; color: inherit; }
.site-subnav .sn-left { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.site-subnav .sn-home {
  font-size: 14px; font-weight: 600; opacity: 0.75;
  transition: opacity .15s, color .15s;
}
.site-subnav .sn-home:hover { opacity: 1; color: #e67e22; }
.site-subnav .sn-lang { display: inline-flex; align-items: center; gap: 6px; }
.site-subnav .sn-label {
  font-size: 11px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; opacity: 0.5; margin-right: 2px;
}
.site-subnav .sn-lang a {
  font-size: 13px; font-weight: 700; opacity: 0.7;
  padding: 4px 10px; border-radius: 6px; transition: all .15s;
}
.site-subnav .sn-lang a:hover { opacity: 1; }
.site-subnav .sn-lang a.active { opacity: 1; color: #fff; background: #e67e22; }
@media print { .site-subnav { display: none !important; } }