.scroll-to-bottom-btn__icon {
  line-height: 1;
  font-size: 28px;
  font-weight: 700;
  transform: translateY(-2px);
}

.scroll-to-bottom-btn {
  position: absolute;
  bottom: calc(var(--toolbar-height, 78px) + var(--composer-height, 0px) + 18px + env(safe-area-inset-bottom));
  margin: 0;
  padding: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  border: 0;
  background: transparent;
  background-image: none;
  color: #ffffff;
  box-shadow: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 38;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  width: 54px;
  height: 54px;
  right: 16px;
  border-radius: 50%;
}

/* Shared scroll-to-bottom control. */

/* ===== Общая кнопка прокрутки ленты вниз ===== */


.scroll-to-bottom-btn.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}


.scroll-to-bottom-btn:hover {
  background: transparent;
  box-shadow: none;
  filter: none;
}

.scroll-to-bottom-btn:active {
  background: rgba(0, 0, 0, 0.12);
  box-shadow:
    inset 0 3px 8px rgba(0, 0, 0, 0.58),
    inset 0 -1px 2px rgba(255, 255, 255, 0.08);
  transform: translateY(1px) scale(0.97);
  filter: none;
}

.scroll-to-bottom-btn:focus,
.scroll-to-bottom-btn:focus-visible {
  background: var(--shine-action-blue);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 10px 26px rgba(var(--shine-action-blue-rgb), 0.34);
}

.scroll-to-bottom-btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.62);
  outline-offset: 2px;
}

.scroll-to-bottom-btn::before,
.scroll-to-bottom-btn::after {
  background: transparent;
  background-image: none;
  border-color: transparent;
  box-shadow: none;
}


.app-shell--scroll-nested.keyboard-open .scroll-to-bottom-btn {
  bottom: calc(var(--keyboard-offset, 0px) + var(--composer-height, 0px) + 18px);
}


/* Общая круглая кнопка прокрутки. Её цвет задаётся --shine-action-blue. */