/* siti-tema-lingua-2710: interruttore sole/luna nella barra in alto (sostituisce il pulsante testuale «Tema»). */
.header-actions [data-theme-toggle]{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;width:44px;height:44px;min-width:44px;min-height:44px;padding:0;margin:0;border:0;border-radius:50%;background:transparent;color:var(--fg);cursor:pointer;line-height:0}
.header-actions [data-theme-toggle] svg{display:block;width:22px;height:22px;pointer-events:none}
:root[data-theme=light] [data-theme-toggle] .tt-sole,:root:not([data-theme=light]) [data-theme-toggle] .tt-luna{display:none}
@media(hover:hover){.header-actions [data-theme-toggle]:hover{color:var(--accent)}}
.header-actions [data-theme-toggle]:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
/* chiaro: velo corallo impercettibile del marchio al posto del bianco puro su html/body (Vetro: «fondo neutro»); superfici invariate */
:root[data-theme=light],:root[data-theme=light] body{background-color:#fffafa}