/* Shared surfaces and interaction states for Channels and Author. */
.ui-surface,
.ui-interactive-surface {
  background: var(--s1);
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .07);
}

.ui-surface {
  border: 1px solid transparent;
}

.ui-interactive-surface {
  border: 1px solid var(--border2);
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}

.ui-interactive-surface:hover {
  background: var(--s2);
  border-color: var(--border3);
}

.ui-interactive-surface:active {
  transform: scale(.99);
}

#pageSources :is(button, input, textarea):focus-visible,
#pageAuthor :is(button, input, textarea):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}