.ui-btn-icon {
  flex: 0 0 32px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  box-shadow: none;
  align-self: center;
  font-size: 0;
  line-height: 0;
  overflow: hidden;
}

.ui-btn-icon::before {
  content: "";
  display: block;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  background: currentColor;
  mask: var(--ui-btn-icon-mask) center / contain no-repeat;
  -webkit-mask: var(--ui-btn-icon-mask) center / contain no-repeat;
}

.ui-btn-icon--fullscreen {
  --ui-btn-icon-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 16 16"><title>fullscreen</title><path fill="currentColor" d="M1.5 1a.5.5 0 0 0-.5.5v4a.5.5 0 0 1-1 0v-4A1.5 1.5 0 0 1 1.5 0h4a.5.5 0 0 1 0 1zM10 .5a.5.5 0 0 1 .5-.5h4A1.5 1.5 0 0 1 16 1.5v4a.5.5 0 0 1-1 0v-4a.5.5 0 0 0-.5-.5h-4a.5.5 0 0 1-.5-.5M.5 10a.5.5 0 0 1 .5.5v4a.5.5 0 0 0 .5.5h4a.5.5 0 0 1 0 1h-4A1.5 1.5 0 0 1 0 14.5v-4a.5.5 0 0 1 .5-.5m15 0a.5.5 0 0 1 .5.5v4a1.5 1.5 0 0 1-1.5 1.5h-4a.5.5 0 0 1 0-1h4a.5.5 0 0 0 .5-.5v-4a.5.5 0 0 1 .5-.5"/></svg>');
}

.ui-btn-icon--fullscreen-exit {
  --ui-btn-icon-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 16 16"><title>fullscreen-exit-16</title><path fill="currentColor" d="M8 1.5a.5.5 0 0 0-.5-.5H4.2c-1.12 0-1.68 0-2.11.218a2 2 0 0 0-.874.874c-.218.428-.218.988-.218 2.11v3.3a.5.5 0 0 0 1 0v-3.3c0-.577 0-.949.024-1.23c.022-.272.06-.372.085-.422c.096-.188.249-.341.437-.437c.05-.025.15-.063.422-.085c.283-.023.656-.024 1.23-.024h3.3a.5.5 0 0 0 .5-.5zm7 10.3V8.5a.5.5 0 0 0-1 0v3.3c0 .577 0 .949-.024 1.23c-.022.272-.06.372-.085.422a1 1 0 0 1-.437.437c-.05.025-.15.063-.422.085c-.283.023-.656.024-1.23.024h-3.3a.5.5 0 0 0 0 1h3.3c1.12 0 1.68 0 2.11-.218c.376-.192.682-.498.874-.874c.218-.428.218-.988.218-2.11zM6.85 9.15a.5.5 0 0 1 .147.35v3.003a.5.5 0 0 1-1 0v-1.79l-4.15 4.15a.5.5 0 0 1-.707-.707l4.15-4.15H3.5a.5.5 0 0 1 0-1h3a.5.5 0 0 1 .191.038q.09.036.162.11zM10.7 6l4.15-4.15a.5.5 0 0 0-.707-.707l-4.15 4.15v-1.79a.5.5 0 0 0-1 0v3.003a.5.5 0 0 0 .309.46a.5.5 0 0 0 .19.037h3a.5.5 0 0 0 0-1h-1.79z"/></svg>');
}

.ui-btn-icon--close {
  --ui-btn-icon-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 1024 1024"><title>close</title><path fill="currentColor" d="M764.3 214.6L512 466.9L259.7 214.6a32 32 0 0 0-45.1 45.1L466.8 512L214.5 764.2a32 32 0 1 0 45.1 45.2L512 557.2l252.3 252.3a32 32 0 0 0 45.1-45.1L557.1 512l252.3-252.4a32 32 0 1 0-45.1-45.2z"/></svg>');
}