.btn() {
    position: relative;
    display: inline-block;
    font-weight: @btn-font-weight;
    font-size: @btn-font-size;
    white-space: nowrap;
    text-align: center;
    background-image: none;
    border: none;
    box-shadow: none;
    cursor: pointer;
    border-radius: @btn-height-large;
    user-select: none;
    touch-action: manipulation;
    appearance: button;
    -webkit-appearance: button;
    text-decoration: none;
    box-shadow: none;
    -webkit-user-select: none;
       -moz-user-select: none;
        -ms-user-select: none;
    margin: 0;
    &,
    &:hover,
    &:active,
    &:focus {
        outline: 0;
        box-shadow: none;
    }

    &:not([disabled]):hover {
        text-decoration: none;
    }

    &:not([disabled]):active {
        outline: 0;
        box-shadow: none;
    }

    &[disabled] {
        cursor: not-allowed;
        pointer-events: none;
        > * {
            pointer-events: none;
        }
    }
}

.btn-default(@dark) {
    background-color: @light-button-primary-background;
    color: @light-button-primary-text;

    &:active,
    &:focus-visible {
        background-color: @light-button-primary-background-pressed;
    }

    & when(@dark=true) {
        background-color: @dark-button-primary-background;
        background: @dark-button-primary-background;
        color: @dark-button-primary-text;

        &:active,
        &:focus-visible {
            background-color: @dark-button-primary-background-pressed;
            background: @dark-button-primary-background-pressed;
        }
    }
}

.btn-primary(@dark) {
    background-color: @light-button-primary-background;
    color: @light-button-primary-text;

    &:active,
    &:focus-visible {
        background-color: @light-button-primary-background-pressed;
    }

    & when(@dark=true) {
        background-color: @dark-button-primary-background;
        color: @light-button-primary-text;

        &:active,
        &:focus-visible {
            background-color: @dark-button-primary-background-pressed;
        }
    }
}

.btn-secondary(@dark) {
    background-color: @light-button-secondary-background;
    color: @light-button-secondary-text;

    &:active,
    &:focus-visible {
        background-color: @light-button-secondary-background-pressed;
    }

    & when(@dark=true) {
        background-color: @dark-button-secondary-background;
        color: @light-button-secondary-text;

        &:active,
        &:focus-visible {
            background-color: @light-button-secondary-background-pressed;
        }
    }
}

.btn-tertiary(@dark) {
    background-color: @light-button-tertiary-background;
    color: @light-button-tertiary-text;
    &:active,
    &:focus-visible {
        background-color: @light-button-tertiary-background-pressed;
    }
    & when(@dark=true) {
        background-color: @dark-button-tertiary-background;
        color: @dark-button-tertiary-text;
        &:active,
        &:focus-visible {
            background-color: @dark-button-tertiary-background-pressed;
        }
    }
}

.btn-size(@minWidth, @height) {
    min-width: @minWidth;
    height: @height;
}

.btn-text(@font-size, @line-height, @font-weight) {
    font-size: @font-size;
    line-height: @line-height;
    font-weight: @font-weight;
}

.btn-icon(@size, @prefix, @suffix, @small: false) {
    width: @size;
    height: @size;
    & when(@prefix=true) and (@small = false) {
        margin-right: 8px;
    }

    & when(@suffix=true) and (@small = false) {
        margin-left: 8px;
    }

    & when(@prefix=true) and (@small = true) {
        margin-right: 4px;
    }

    & when(@suffix=true) and (@small = true) {
        margin-left: 4px;
    }
}