#bsfw-layer,
#bsfw-dimming {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#bsfw-dimming {
  z-index: 2147482998;
  background: rgba(3, 7, 18, .34);
  opacity: 0;
  transition: opacity .35s ease;
}

#bsfw-dimming.is-visible { opacity: 1; }

#bsfw-layer {
  z-index: 2147482999;
  display: block;
}

#bsfw-sound-toggle {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 2147483000;
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  color: #fff;
  background: rgba(12,20,40,.8);
  box-shadow: 0 8px 28px rgba(0,0,0,.24);
  backdrop-filter: blur(10px);
  cursor: pointer;
}

#bsfw-sound-toggle:hover { background: rgba(20,32,60,.94); }
#bsfw-sound-toggle:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
#bsfw-sound-toggle svg { width: 20px; height: 20px; fill: currentColor; }

@media (prefers-reduced-motion: reduce) {
  #bsfw-dimming { transition: none; }
}