.glass-surface {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.glass-surface__filter {
  width: 100%;
  height: 100%;
  pointer-events: none;
  position: absolute;
  inset: 0;
  opacity: 0;
  z-index: -1;
}

.glass-surface__content {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  position: relative;
  z-index: 1;
}

.glass-surface--svg {
  background: hsl(0 0% 100% / var(--glass-frost, 0));
  backdrop-filter: var(--filter-id, url(#glass-filter)) saturate(var(--glass-saturation, 1));
  box-shadow:
    0 0 2px 1px rgba(255, 255, 255, 0.15) inset,
    0 0 10px 4px rgba(255, 255, 255, 0.08) inset,
    0 8px 32px rgba(0, 0, 0, 0.35);
}

.glass-surface--fallback {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(18px) saturate(1.6) brightness(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.6) brightness(1.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.25),
    inset 0 -1px 0 0 rgba(255, 255, 255, 0.08);
}

@supports not (backdrop-filter: blur(10px)) {
  .glass-surface--fallback {
    background: rgba(20, 20, 24, 0.75);
  }
}