:root { color-scheme:light; }
:root[data-theme="dark"] { color-scheme:dark; }
.theme-toggle {
  display:inline-flex; align-items:center; gap:8px; padding:8px 12px;
  border:1px solid var(--line); border-radius:8px; background:var(--panel);
  color:var(--ink); font:600 12px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  cursor:pointer;
}
.theme-toggle[hidden] { display:none; }
.theme-toggle:hover { border-color:var(--blue); }
.theme-toggle:focus-visible { outline:3px solid var(--blue); outline-offset:4px; }
:root[data-theme="dark"] .theme-toggle { border-color:var(--blue); }