$pmd-icon-size: 24px;
$pmd-icon-padding: 12px;

$pmd-icon-sizes: (
    normal: (clearance: 12px, size: 24px),
    dense: (clearance: 10px, size: 20px),
);

@mixin pmd-icon-size($size) {
    @if map-has-key($pmd-icon-sizes, $size) {
        $sizing: map-get($pmd-icon-sizes, $size);
        &.pmd-icon--size-#{$size} {
            &:not(.pmd-icon--no-clearance) {
                padding: map-get($sizing, 'clearance');
            }

            font-size: map-get($sizing, 'size');
        }
    }

    @else {
        @warn "Invalid icon size `#{$size}`.";
    }
}

.pmd-icon {
    font-family: 'Material Icons';
    font-weight: normal;
    font-style: normal;
    display: inline-block;
    line-height: 1;
    text-transform: none;
    letter-spacing: normal;
    word-wrap: normal;
    white-space: nowrap;
    direction: ltr;

    /* Support for all WebKit browsers. */
    -webkit-font-smoothing: antialiased;
    /* Support for Safari and Chrome. */
    text-rendering: optimizeLegibility;

    /* Support for Firefox. */
    -moz-osx-font-smoothing: grayscale;

    /* Support for IE. */
    font-feature-settings: 'liga';

    color: rgba(0, 0, 0, .54); // TODO

    @include pmd-icon-size('normal');
    @include pmd-icon-size('dense');
}