//
// Buttons
// ---
// bigchaindb.com
//

.btn {
    @include transition;
    display: inline-block;
    font-family: $btn-font-family;
    font-weight: $btn-font-weight;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 0;
    box-shadow: none;

    @include button-size($btn-padding-y, $btn-padding-x, $font-size-base, $line-height, $btn-border-radius);

    &:hover,
    &:focus {
        box-shadow: 0 1px 4px rgba($brand-main-blue-dark, .4);
        transform: translateY(-1px);
    }

    &:active,
    &.active {
        background-image: none;
        outline: 0;
        transform: translateY(0);
        box-shadow: 0 1px 2px rgba($brand-main-blue-dark, .3);
    }

    &.disabled,
    &:disabled {
        opacity: .45;
        box-shadow: none;
        cursor: not-allowed;
        pointer-events: none;
    }

    .icon {
        width: $font-size-base;
        height: $font-size-base;
        margin-right: .25rem;
        margin-bottom: -1px;
    }

    .loader {
        margin-bottom: -.2rem;
    }
}

// Future-proof disabling of clicks on `<a>` elements
a.btn.disabled,
fieldset[disabled] a.btn {
    pointer-events: none;
}

//
// Alternate buttons
//
.btn-primary {
    @include button-variant($btn-primary-color, $btn-primary-bg);
}

.btn-secondary {
    @include button-variant($btn-secondary-color, $btn-secondary-bg);
}

.btn-blue {
    @include button-variant($btn-blue-color, $btn-blue-bg);
}

.btn-blue-light {
    @include button-variant($btn-blue-light-color, $btn-blue-light-bg);
}

.btn-violet {
    @include button-variant($btn-violet-color, $btn-violet-bg);
}

.btn-info {
    @include button-variant($btn-info-color, $btn-info-bg);
}

.btn-success {
    @include button-variant($btn-success-color, $btn-success-bg);
}

.btn-warning {
    @include button-variant($btn-warning-color, $btn-warning-bg);
}

.btn-danger {
    @include button-variant($btn-danger-color, $btn-danger-bg);
}


//
// Link buttons
//
// Make a button look and behave like a link
.btn-link {
    font-weight: $font-weight-normal;
    color: $link-color;
    border-radius: 0;

    &,
    &:active,
    &.active,
    &:disabled {
        background-color: transparent;
        box-shadow: none;
    }

    &,
    &:hover,
    &:focus,
    &:active {
        border-color: transparent;
        box-shadow: none;
        background: none;
    }
}


//
// Button Sizes
//
.btn-lg {
    // line-height: ensure even-numbered height of button next to large input
    @include button-size($btn-padding-y-lg, $btn-padding-x-lg, $font-size-lg, $line-height-lg, $btn-border-radius-lg);

    .icon {
        width: $font-size-lg;
        height: $font-size-lg;
    }
}

.btn-sm {
    // line-height: ensure proper height of button next to small input
    @include button-size($btn-padding-y-sm, $btn-padding-x-sm, $font-size-sm, $line-height-sm, $btn-border-radius-sm);

    .icon {
        width: $font-size-sm;
        height: $font-size-sm;
    }
}

.btn-xs {
    // line-height: ensure proper height of button next to small input
    @include button-size($btn-padding-y-xs, $btn-padding-x-xs, $font-size-xs, $line-height-xs, $btn-border-radius-xs);

    .icon {
        width: $font-size-xs;
        height: $font-size-xs;
    }
}

//
// Block button
//
.btn-block {
    display: block;
    width: 100%;

    + .btn-block {
        margin-top: 5px;
    }
}


// Specificity overrides
input[type='submit'],
input[type='reset'],
input[type='button'] {
    &.btn-block {
        width: 100%;
    }
}