.panel {
    border-width: 2px;
    border-color: $gray-background;
    @include transition(background-color .3s ease-in-out);

    .panel-heading {
        background-color: transparent;
        border-width: 2px;
        border-color: $gray-background;
    }

    h3.panel-title {
        padding: 4px 0px 4px 0px;
        font-size: 20px;
        color: $gray-light;
        color: $gray-darker;
        border-radius: 3px;

        small {
            font-size: 14px;
            margin-left: 5px;
        }

        .panel-note {
            float: right;
            font-weight: 600;
            color: $gray-light;
            font-size: 14px;
        }
    }

    .panel-body {
        p {
            font-size: 14px;
            color: $text-color;
        }
        h5 {
            font-size: 12px;
        }
    }

    .panel-bar {
        width: 100%;
        height: 20px;
        @include transition(background-color .1s linear);
    }

    &.panel-link {
        border-bottom-width: 2px;
    }

    &.panel-short {
        border-bottom-width: 0px;
    }

    &.panel-link:hover {
        cursor: pointer;
        background-color: lighten($gray-background, 8%);
    }

    &.active {
        >.panel-heading {
            border-color: $purple;
        }

        @include transition(background-color .1s linear);

        border-color: $purple;

        .panel-bar {
            background-color: $purple;
        }
    }
}