$brown: #201a11;
$light: #ccc;
$orange: #b53a04;
$body_font: $brown;
$body_font_light: #b3aeae;
//$light;


@mixin smcaps {
  text-transform: uppercase;
  letter-spacing: 1px;
}

@function calc-em($target-px, $context) {
  @return $target-px / $context * 1em;
}

@mixin fontsize($size: 24, $base: 16) {
    font-size: $size + px;
    font-size: ($size / $base) * 1rem;
}

@mixin img_plain {
    padding: 0;
    max-width: 100%;
    background: none;
}

@mixin generic-sans {
    font-family: sans-serif;
}

%clearfix {
    *zoom: 1;
    &:before {
        content: " ";
        display: table;
    }
    &:after {
        content: " ";
        display: table;
        clear: both;
    }
}

@mixin transparent_class {
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=90)";
  filter: alpha(opacity = 90);
  opacity: 0.9;
}

@mixin faded_line_after {
    display: block;
    content: "";
    margin-top: 3em;
    height: 1px;
    width: 100%;
    background: -webkit-linear-gradient(left, rgba(0,0,0,0),rgba(0,0,0,0.1),rgba(0,0,0,0));
    background: -moz-linear-gradient(left, rgba(0,0,0,0),rgba(0,0,0,0.1),rgba(0,0,0,0));
    background: -o-linear-gradient(left, rgba(0,0,0,0),rgba(0,0,0,0.1),rgba(0,0,0,0));
    background: linear-gradient(left, rgba(0,0,0,0),rgba(0,0,0,0.1),rgba(0,0,0,0));
} 

//for overriding the above on dark pages:
@mixin light_faded_line_after {
    background: -webkit-linear-gradient(left, rgba(243,237,219,0),rgba(243,237,219,0.1),rgba(243,237,219,0));
    background: -moz-linear-gradient(left, rgba(243,237,219,0),rgba(243,237,219,0.1),rgba(243,237,219,0));
    background: -o-linear-gradient(left, rgba(243,237,219,0),rgba(243,237,219,0.1),rgba(243,237,219,0));
    background: linear-gradient(left, rgba(243,237,219,0),rgba(243,237,219,0.1),rgba(243,237,219,0));
} 

@mixin lighter_faded_line_after {
    background: -webkit-linear-gradient(left, rgba(243,237,219,.1),rgba(243,237,219,0.3),rgba(243,237,219,.1));
    background: -moz-linear-gradient(left, rgba(243,237,219,0),rgba(243,237,219,0.1),rgba(243,237,219,0));
    background: -o-linear-gradient(left, rgba(243,237,219,0),rgba(243,237,219,0.1),rgba(243,237,219,0));
    background: linear-gradient(left, rgba(243,237,219,0),rgba(243,237,219,0.1),rgba(243,237,219,0));
} 

//generic constrain function
@mixin constrain($size) {
    max-width: $size;
    margin-left: auto;
    margin-right: auto;
}

//set an element to centered, narrowish column width
//used mostly on columns of text
@mixin constrain_narrow() {
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
    @include breakpoint(beta) {
        max-width: 640px;
    }
    @include breakpoint(gamma) {
        max-width: 680px;
    }
}

//set an element to centered, wideish column width
@mixin constrain_wide() {
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
    @include breakpoint(gamma) {
        max-width: 960px;
    }
    @include breakpoint(delta) {
        max-width: 1170px;
    }
}