body, html {
    margin: 0;
    font: normal 0/0 Arial, Helvetica, sans-serif;
    background: #333;
    overflow: hidden;
    color: #fff;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body, html, .flipper, .f, .b, #g {
    width: 100%;
    height: 100%;
}

/* font-face */
@font-face {
    font-family: "GeneralFoundicons";
    font-weight: normal;
    font-style: normal;
    src: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/60583/general_foundicons.eot");
    src: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/60583/general_foundicons.eot?#iefix") format("embedded-opentype"),
        url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/60583/general_foundicons.woff") format("woff"),
        url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/60583/general_foundicons.ttf") format("truetype"),
        url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/60583/general_foundicons.svg#GeneralFoundicons") format("svg");
}

a {
    text-decoration: none;
    color: #fff;
    display: block;
    font: bold 18px/75px 'Open Sans';
    text-transform: uppercase;
    text-align: center;
    padding: 0;
    margin: 0 1px;
}

a:hover {
    color: #fff;
    background: rgba(255, 255, 255, .1);
}

/* FRONT SCREEN */
.logo {
    width: 450px;
    height: 450px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -225px 0 0 -225px;
}

.logo .card {
    width: 50%;
    height: 50%;
    cursor: default;
    position: relative;
}

.logo .card.left.active {
    z-index: 2;
}

.logo .card.left.active + .card {
    opacity: 0;
}

.logo .card.left.active .b {
    margin-left: -100%;
}

.logo .f {
    font: normal 130px/225px 'Open Sans';
    text-align: center;
    text-transform: uppercase;
}

.logo .c2 {
    transform: scale(-1, 1);
    -webkit-transform: scale(-1, 1);
    -moz-transform: scale(-1, 1);
    -ms-transform: scale(-1, 1);
}

.logo .contentbox {
    width: 200%;
    font: normal 12px/16px 'Open Sans';
    text-align: left;
}

.logo .contentbox.levels {
    width: 100%;
}

.logo .contentbox .padded {
    padding: 0 15px;
}

.logo .contentbox h2 {
    font-size: 24px;
    padding: 0;
    margin: 28px 0;
    text-transform: uppercase;
}

.logo .contentbox p {
    line-height: 14px;
    margin: 14px 0;
}

#stats h2 i {
    margin-right: 10px;
    vertical-align: top;
    font: italic normal 9px/8px 'Open Sans';
    color: rgba(255, 255, 255, .4);
}

#stats ul {
    width: 50%;
    display: inline-block;
    margin: 0;
    padding: 0;
    list-style-type: none;
    vertical-align: top;
    line-height: 22px;
}

#stats li {
    display: block;
    margin: 0;
    padding: 0;
}

#stats li b {
    display: inline-block;
    font-size: 12px;
    width: 95px;
}

#stats a {
    position: absolute;
    bottom: 0;
    width: 100%;
    margin-left: -15px;
}

.logo .info {
    font-size: 11px;
    line-height: 16px;
    text-align: center;
    color: rgba(255, 255, 255, .3);
    padding: 0 25px;
}

/* GAME SCREEN */
#g {
    margin-top: 4px;
}

#g .timer {
    width: 0%;
    height: 5px;
    position: absolute;
    top: 0;
    background: #C0392B;
    z-index: 1;
}

@-webkit-keyframes timer {
    100% {
        width: 100%;
    }
}

@-moz-keyframes timer {
    100% {
        width: 100%;
    }
}

@-o-keyframes timer {
    100% {
        width: 100%;
    }
}

@keyframes timer {
    100% {
        width: 100%;
    }
}

.pause {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    z-index: 100;
    background: rgba(51, 51, 51, 0.78);
}

.pause::before {
    content: 'PAUSED';
    width: 100%;
    position: absolute;
    margin-top: -100px;
    top: 50%;
    background: #C0392B;
    color: #fff;
    font: bold 80px/200px 'Open Sans';
    display: block;
    text-align: center;
}

/* card styles */
#g .found {
    display: inline-block;
}

.card {
    display: inline-block;
    perspective: 1000px;
    -webkit-perspective: 1000px;
    -moz-perspective: 1000px;
}

.card:not(.active):hover {
    opacity: 0.8;
}

.card .b::before {
    content: attr(data-f);
    display: block;
    font: normal 100px/100px "GeneralFoundicons";
    position: absolute;
    top: 50%;
    margin-top: -50px;
    width: 100%;
    text-align: center;
}

/* flip cards */
.flipper {
    position: relative;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
}

.f, .b {
    position: absolute;
    top: 0;
    left: 0;
    box-shadow: inset 0 0 0 1px #333;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
}

.f {
    background: #16A085;
    z-index: 1;
}

.b {
    background: #C0392B;
    opacity: 0;
}

.card.active .b {
    z-index: 2;
    opacity: 1;
}

/* Grouped for easy prefixing */
.card, .flipper, .logo .b {
    transition: 400ms;
    -ms-transition: 400ms;
    -webkit-transition: 400ms;
    -moz-transition: 400ms;
    -o-transition: 400ms;
}

.card.active .flipper, .b {
    transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    -moz-transform: rotateY(180deg);
    -ms-transform: rotateY(180deg);
    -o-transform: rotateY(180deg);
}

.logo .f, .card .b::before, .pause::before {
    -webkit-text-stroke: 1px #fff;
}

/* Responsive Stuff */
@media all and (max-width: 1680px) and (min-width: 640px) {
    .card .b::before {
        font-size: 90px;
    }

    #g.medium .card .b::before {
        font-size: 70px;
    }

    #g.hard .card .b::before {
        font-size: 50px;
    }
}

@media all and (max-width: 640px) and (min-width: 470px) {
    .card .b::before {
        font-size: 90px;
    }

    #g.medium .card .b::before {
        font-size: 60px;
    }

    #g.hard .card .b::before {
        font-size: 50px;
    }
}

@media all and (max-width: 470px) and (min-width: 0px) {
    .card .b::before {
        font-size: 60px;
    }

    #g.medium .card .b::before {
        font-size: 35px;
        -webkit-text-stroke: 0;
    }

    #g.hard .card .b::before {
        font-size: 32px;
        -webkit-text-stroke: 0;
    }
}

@media all and (max-width: 640px) and (min-width: 0px) {
    a {
        line-height: 50px;
        font-size: 13px;
    }

    .logo {
        width: 300px;
        height: 300px;
        margin: -150px 0 0 -150px;
    }

    .logo .f {
        font: normal 80px/150px 'Open Sans';
    }

    .logo .contentbox h2 {
        font-size: 16px;
        margin: 24px 0;
    }

    .logo .instructions h2 {
        display: none;
    }

    .logo .instructions.contentbox p:nth-child(3) {
        display: none;
    }

    #stats li b {
        width: auto;
    }
}