@mixin arrow-down() {
    width: 0;
    height: 0;
    border: $balloon-arrow-size solid transparent;
    border-top-color: var(--balloon-color);
}

@mixin arrow-up() {
    width: 0;
    height: 0;
    border: $balloon-arrow-size solid transparent;
    border-bottom-color: var(--balloon-color);
}

@mixin arrow-left() {
    width: 0;
    height: 0;
    border: $balloon-arrow-size solid transparent;
    border-right-color: var(--balloon-color);
}

@mixin arrow-right() {
    width: 0;
    height: 0;
    border: $balloon-arrow-size solid transparent;
    border-left-color: var(--balloon-color);
}

@mixin base-effects() {
    opacity: 0;
    pointer-events: none;
    transition: all 0.18s ease-out 0.18s;
}

@mixin no-effects() {
    transition: none;
}

@mixin normalized-text() {
    text-indent: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    font-weight: normal;
    font-style: normal;
    text-shadow: none;
    line-height: 1.5;
    font-size: var(--balloon-font-size);
}