.fab {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 999;
  display: flex;
  flex-direction: column-reverse;
  align-items: flex-end;
}

.fab__btn {
  width: 48px;
  height: 48px;
  border: 1px solid var(--fab-border);
  border-radius: 50%;
  background: var(--fab-bg);
  color: var(--fab-text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  font-size: 18px;
}

.fab__btn:hover,
.fab__btn:focus-visible {
  filter: brightness(1.15);
}

.fab__list {
  min-width: 148px;
  max-height: min(70vh, 380px);
  margin: 0 0 8px;
  padding: 5px;
  list-style: none;
  background: var(--fab-bg);
  border: 1px solid var(--fab-border);
  border-radius: 12px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
  overflow-y: auto;
}

.fab__list[hidden] {
  display: none;
}

.fab__item {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding: 6px 9px;
  border-radius: 7px;
  color: var(--fab-text);
  font-size: 0.9rem;
  line-height: 1.3;
  text-decoration: none;
}

.fab__item:hover,
.fab__item:focus-visible,
.fab__item.is-active {
  background: var(--fab-hover);
}

.fab__item.is-active {
  font-weight: 600;
}

.fab__item-icon {
  width: 1.25em;
  flex: 0 0 1.25em;
  text-align: center;
}

@media (max-width: 640px) {
  .fab {
    right: 12px;
    bottom: 12px;
  }

  .fab__btn {
    width: 46px;
    height: 46px;
  }
}