mixins.less

// Mixins.less
// Snippets of reusable CSS to develop faster and keep code readable
// -----------------------------------------------------------------


// UTILITY MIXINS
// --------------------------------------------------

// Clearfix
// --------
// For clearing floats like a boss h5bp.com/q
.clearfix {
    *zoom: 1;
    &:before,
    &:after {
        display: table;
        content: "";
    }
    &:after {
        clear: both;
    }
}

// Webkit-style focus
// ------------------
.tab-focus() {
    // Default
    outline: thin dotted #333;
    // Webkit
    outline: 5px auto -webkit-focus-ring-color;
    outline-offset: -2px;
}

// Center-align a block level element
// ----------------------------------
.center-block() {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

// IE7 inline-block
// ----------------
.ie7-inline-block() {
    *display: inline; /* IE7 inline-block hack */
    *zoom: 1;
//comment
}

// IE7 likes to collapse whitespace on either side of the inline-block elements.
// Ems because we're attempting to match the width of a space character. Left
// version is for form buttons, which typically come after other elements, and
// right version is for icons, which come before. Applying both is ok, but it will
// mean that space between those elements will be .6em (~2 space characters) in IE7,
// instead of the 1 space in other browsers.
.ie7-restore-left-whitespace() {
    *margin-left: .3em;

    &:first-child {
        *margin-left: 0;
    }
}

.ie7-restore-right-whitespace() {
    *margin-right: .3em;

    &:last-child {
        *margin-left: 0;
    }
}

// Sizing shortcuts
// -------------------------
.size(@height: 5px, @width: 5px) {
    width: @width;
    height: @height;
}
.square(@size: 5px) {
    .size(@size, @size);
}

// Placeholder text
// -------------------------
.placeholder(@color: @placeholderText) {
    :-moz-placeholder {
        color: @color;
    }
    ::-webkit-input-placeholder {
        color: @color;
    }
}

// Text overflow
// -------------------------
// Requires inline-block or block for proper styling
.text-overflow() {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}



// FONTS
// --------------------------------------------------

#font {
    #family {
        .serif() {
            font-family: Georgia, "Times New Roman", Times, serif;
        }
        .sans-serif() {
            font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
        }
        .monospace() {
            font-family: Menlo, Monaco, "Courier New", monospace;
        }
    }
    .shorthand(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
        font-size: @size;
        font-weight: @weight;
        line-height: @lineHeight;
    }
    .serif(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
        #font > #family > .serif;
        #font > .shorthand(@size, @weight, @lineHeight);
    }
    .sans-serif(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
        #font > #family > .sans-serif;
        #font > .shorthand(@size, @weight, @lineHeight);
    }
    .monospace(@size: @baseFontSize, @weight: normal, @lineHeight: @baseLineHeight) {
        #font > #family > .monospace;
        #font > .shorthand(@size, @weight, @lineHeight);
    }
}
    .text-light() {
        font-weight: 300;
    }
    .text-normal() {
        font-weight: 400;
    }
    .text-semibold() {
        font-weight: 500;
    }
    .text-bold() {
        font-weight: 700;
    }
    .text-extrabold() {
        font-weight: 800;
    }


// FORMS
// --------------------------------------------------

// Block level inputs
.input-block-level {
    display: block;
    width: 100%;
    min-height: 28px; /* Make inputs at least the height of their button counterpart */
    /* Makes inputs behave like true block-level elements */
    .box-sizing(border-box);
}


// Mixin for form field states
.formFieldState(@textColor: #555, @borderColor: #ccc, @backgroundColor: #f5f5f5) {
    // Set the text color
    > label {
        color: @textColor;
    }
    // Style inputs accordingly
    input,
    select,
    textarea {
        color: @textColor;
        border-color: @borderColor;
        &:focus {
            border-color: darken(@borderColor, 10%);
            .box-shadow(0 0 6px lighten(@borderColor, 20%));
        }
    }
    // Give a small background color for input-prepend/-append
    .input-prepend .add-on,
    .input-append .add-on {
        color: @textColor;
        background-color: @backgroundColor;
        border-color: @textColor;
    }
}



// CSS3 PROPERTIES
// --------------------------------------------------

// Border Radius
.border-radius(@radius: 5px) {
    border-radius: @radius;
}

// Drop shadows
.box-shadow(@shadow: 0 1px 3px rgba(0,0,0,.25)) {
    box-shadow: @shadow;
}
.box-shadow-both(@shadow1 , @shadow2) {
    box-shadow: @shadow1, @shadow2;
}

// Animate
.animate(@animation) {
  animation:  @animation;
}

// Transitions
.transition(@transition) {
    -webkit-transition: @transition;
             -o-transition: @transition;
                    transition: @transition;
}

// Transformations
.rotate(@degrees) {
    -webkit-transform: rotate(@degrees);
                    transform: rotate(@degrees);
}
.scale(@ratio) {
    -webkit-transform: scale(@ratio);
                    transform: scale(@ratio);
}
.scaleY(@ratio) {
    -webkit-transform: scaleY(@ratio);
                    transform: scaleY(@ratio);
}
.scaleX(@ratio) {
    -webkit-transform: scaleX(@ratio);
                    transform: scaleX(@ratio);
}
.translate(@x: 0, @y: 0) {
    -webkit-transform: translate(@x, @y);
                    transform: translate(@x, @y);
}
.skew(@x: 0, @y: 0) {
    -webkit-transform: skew(@x, @y);
                    transform: skew(@x, @y);
}
.translate3d(@x: 0, @y: 0, @z: 0) {
    -webkit-transform: translate(@x, @y, @z);
                    transform: translate(@x, @y, @z);
}

// Background clipping
// Heads up: FF 3.6 and under need "padding" instead of "padding-box"
.background-clip(@clip) {
    -webkit-background-clip: @clip;
         -moz-background-clip: @clip;
                    background-clip: @clip;
}

// Box sizing
.box-sizing(@boxmodel) {
        box-sizing: @boxmodel;
}
.border-box() {
    .box-sizing(border-box);
}

// User select
// For selecting text on the page
.user-select(@select) {
    -webkit-user-select: @select;
         -moz-user-select: @select;
             -o-user-select: @select;
                    user-select: @select;
-webkit-touch-callout: @select;
     -khtml-user-select: @select;
            -ms-user-select: @select;
}

// Resize anything
.resizable(@direction: both) {
    resize: @direction; // Options: horizontal, vertical, both
    overflow: auto; // Safari fix
}

// CSS3 Content Columns
.content-columns(@columnCount, @columnGap: @gridColumnGutter) {
    -webkit-column-count: @columnCount;
         -moz-column-count: @columnCount;
                    column-count: @columnCount;
    -webkit-column-gap: @columnGap;
         -moz-column-gap: @columnGap;
                    column-gap: @columnGap;
}

// Opacity
.opacity(@opacity: 100) {
    opacity: @opacity / 100;
     filter: ~"alpha(opacity=@{opacity})";
}



// BACKGROUNDS
// --------------------------------------------------

// Add an alphatransparency value to any background or border color (via Elyse Holladay)
#translucent {
    .background(@color: @white, @alpha: 1) {
        background-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
    }
    .border(@color: @white, @alpha: 1) {
        border-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
        .background-clip(padding-box);
    }
}

// Reset filters for IE
.reset-filter() {
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
}


// COMPONENT MIXINS
// --------------------------------------------------

// Horizontal dividers
// -------------------------
// Dividers (basically an hr) within dropdowns and nav lists
.nav-divider() {
    height: 1px;
    margin: ((@baseLineHeight / 2) - 1) 1px; // 8px 1px
    overflow: hidden;
    background-color: #e5e5e5;
    border-bottom: 1px solid @white;

    // IE7 needs a set width since we gave a height. Restricting just
    // to IE7 to keep the 1px left/right space in other browsers.
    // It is unclear where IE is getting the extra space that we need
    // to negative-margin away, but so it goes.
    *width: 100%;
    *margin: -5px 0 5px;
}


// Reset bootstrap
// ------------------
.reset-bootstrap-effects {
    -webkit-transition: none;
    -moz-transition: none;
    -ms-transition: none;
    -o-transition: none;
    transition: none;
}


// Reset button styling
// ------------------
.reset-button {
    border: 0;
    background: 0;
    color: #333;
}

// Navbar vertical align
// -------------------------
// Vertically center elements in the navbar.
// Example: an element has a height of 30px, so write out `.navbarVerticalAlign(30px);` to calculate the appropriate top margin.
.navbarVerticalAlign(@elementHeight) {
    margin-top: (@navbarHeight - @elementHeight) / 2;
}

// Popover arrows
// -------------------------
// For tipsies and popovers
#popoverArrow {
    .top(@arrowWidth: 5px, @color: @black) {
        bottom: 0;
        left: 50%;
        margin-left: -@arrowWidth;
        border-left: @arrowWidth solid transparent;
        border-right: @arrowWidth solid transparent;
        border-top: @arrowWidth solid @color;
    }
    .left(@arrowWidth: 5px, @color: @black) {
        top: 50%;
        right: 0;
        margin-top: -@arrowWidth;
        border-top: @arrowWidth solid transparent;
        border-bottom: @arrowWidth solid transparent;
        border-left: @arrowWidth solid @color;
    }
    .bottom(@arrowWidth: 5px, @color: @black) {
        top: 0;
        left: 50%;
        margin-left: -@arrowWidth;
        border-left: @arrowWidth solid transparent;
        border-right: @arrowWidth solid transparent;
        border-bottom: @arrowWidth solid @color;
    }
    .right(@arrowWidth: 5px, @color: @black) {
        top: 50%;
        left: 0;
        margin-top: -@arrowWidth;
        border-top: @arrowWidth solid transparent;
        border-bottom: @arrowWidth solid transparent;
        border-right: @arrowWidth solid @color;
    }
}

// Generates the flex order based on the custom 'order' attribute added for the fields in the authoring header and authoring content
.generate-orders(20);
.generate-orders(@n, @i: 1) when (@i =< @n) {
    [order="@{i}"] {
        order: @i;
    }
    .generate-orders(@n, (@i + 1));
}

// Defines the width of the items in the authoring header based on the custom 'sd-width' attribute
[sd-width="full"] {flex-basis: 100%}
[sd-width="half"] {flex-basis: 50%}
[sd-width="third"] {flex-basis: 33%}
[sd-width="quarter"] {flex-basis: 25%}