/* =========================================================
   Shared theme toggle — used by the hub and every game.
   The button colors itself from each page's own tokens
   (--card / --stroke-strong / --text), so it fits in
   whichever palette is active.
   ========================================================= */

.theme-toggle {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  right: 14px;
  z-index: 200;
  width: 42px; height: 42px;
  border-radius: 50%;
  display: grid; place-items: center;
  cursor: pointer;
  font-size: 19px; line-height: 1;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--stroke-strong);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 22px -10px rgba(0, 0, 0, 0.45);
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.15s cubic-bezier(0.22,1,0.36,1), background 0.2s, border-color 0.2s;
}
.theme-toggle:hover { transform: scale(1.07); }
.theme-toggle:active { transform: scale(0.93); }
.theme-toggle:focus-visible { outline: 3px solid var(--brand-2, #a06bff); outline-offset: 3px; }

/* Smooth the switch between themes without animating every load. */
body { transition: background-color 0.3s ease, color 0.3s ease; }