body {
    counter-reset: birds;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    overflow: hidden;
}
/*hide checkbox*/
input {
    position: fixed;
    left: -10px;
    top: -10px;
}

h1 {
    margin: 0;
    text-align: center;
}

h2 {
    position: fixed;
    right: 20px;
    bottom: 0;
    font-size: 18px;
    color: red;
}

/*play area*/
.wrapper {
    height: 500px;
    background: -webkit-linear-gradient(top, hsla(210,70%,80%,1) 0%,hsla(210,50%,100%,1) 100%);
    position: relative;
    cursor: crosshair;
}
/*count dead birds*/
.input-circle:checked {
    counter-increment: birds;
}

.sum {
    position: fixed;
    left: 45%;
    top: 60px;
    font-size: 24px;
    fonot-weight: bold;
}

    /*print to screen dead birds*/
    .sum:after {
        content: counter(birds);
    }

.input-circle ~ .pajaro {
    opacity: 0;
    transition: 0.3s cubic-bezier(0,.43,1,0);
    animation: move 8s infinite alternate;
}

.input-circle1:not(:checked) ~ .pajaro1,
.input-circle2:not(:checked) ~ .pajaro2,
.input-circle3:not(:checked) ~ .pajaro3,
.input-circle4:not(:checked) ~ .pajaro4,
.input-circle5:not(:checked) ~ .pajaro5,
.input-circle6:not(:checked) ~ .pajaro6 {
    opacity: 1;
}


.input-circle1:checked ~ .pajaro1 span,
.input-circle2:checked ~ .pajaro2 span,
.input-circle3:checked ~ .pajaro3 span,
.input-circle4:checked ~ .pajaro4 span,
.input-circle5:checked ~ .pajaro5 span,
.input-circle6:checked ~ .pajaro6 span {
    display: block;
}

.pajaro {
    position: absolute;
    left: 0;
    cursor: crosshair;
}

    .pajaro > span {
        display: none;
        position: absolute;
        z-index: 2;
        left: -250%;
        bottom: -50%;
        background-color: white;
        border: solid 2px #000;
        width: 80px;
        height: 30px;
        padding: 10px;
        border-radius: 50%;
    }

        .pajaro > span:before {
            content: "I'm Dead!";
            color: red;
            font-weight: bold;
        }

.pajaro1 {
    top: 50px;
    animation-delay: -2s !important;
    transform: scale(0.9);
}

.pajaro2 {
    top: 100px;
    animation-delay: -1s !important;
    transform: scale(0.8);
}

.pajaro3 {
    top: 200px;
    animation-delay: -3s !important;
    transform: scale(1.4);
}

.pajaro4 {
    top: 50px;
    animation-delay: -12s !important;
    transform: scale(0.9);
}

.pajaro5 {
    top: 100px;
    animation-delay: -16s !important;
    transform: scale(0.5);
}

.pajaro6 {
    top: 200px;
    animation-delay: -20s !important;
    transform: scale(1.4);
}

@keyframes move {
    0% {
        left: 0%;
    }

    20% {
        left: 20%;
        top: 50%;
    }

    40% {
        top: 30%;
        left: 60%;
    }

    60% {
        top: 80%;
        left: 80%;
    }

    80% {
        top: 10%;
        left: 20%:
    }

    100% {
        top: 30%;
        left: 20%;
    }
}


.timer {
    background-color: #333;
    width: 300px;
    height: 50px;
    position: fixed;
}


    .timer span {
        display: block;
        background: repeating-linear-gradient(-45deg, #000, rgba(0, 0, 0, 0) 25px, #FFF 25px, #FFF 50px);
        width: 300px;
        height: 50px;
        animation: timer 20s linear;
    }

        .timer span:before {
            content: "TIME LEFT";
            display: block;
            position: absolute;
            z-index: 3;
            left: 0;
            right: 0;
            top: 0;
            bottom: 0;
            text-align: center;
            line-height: 50px;
            font-size: 25px;
            color: red;
        }

@keyframes timer {
    0% {
        width: 10px;
    }

    100% {
        width: 300px;
        display: block;
    }
}


.gameover {
    position: fixed;
    z-index: 100000;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    background-color: rgba(0,0,0,0.8);
    animation: gameover 20s linear forwards;
    font-size: 80px;
    color: white;
    font-weight: bold;
    text-align: center;
    text-indent: 0;
    line-height: 500px;
}

@keyframes gameover {
    0% {
        left: -5000px;
        bottom: 100%;
    }

    97% {
        left: -5000px;
        bottom: 100%;
    }

    100% {
        left: 0px;
    }
}

footer {
    position: fixed;
    left: 0;
    bottom: 0;
    padding: 10px 20px;
}

    footer svg {
        vertical-align: middle;
    }

    footer a {
        text-decoration: none;
        font-size: 20px;
        color: rgba(29,161,242,1.00);
        vertical-align: middle;
    }




/*------------------------------------------------------ body of the bird
*/

.pajaro {
    background: black;
    border-radius: 50% 50% 20% 20%;
    color: white;
    line-height: 20px;
    letter-spacing: 2px;
    font-size: 0.8em;
    text-align: center;
    position: absolute;
    margin-top: -20px;
    margin-left: -10px;
    width: 15px;
    height: 15px;
    animation: planeo 0.8s linear infinite;
    z-index: 999;
}

    .pajaro:after,
    .pajaro:before {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
    }

    /*------------------------------------------------------ bird wings
*/

    .pajaro:after {
        border-radius: 100% 100% 0 0;
        box-shadow: inset 0px 5px 0 black;
        width: 100px;
        height: 100px;
        margin-top: -7px;
        margin-left: -50px;
        transform-origin: 100% 0%;
        animation: alas 3s linear infinite;
    }

    /*------------------------------------------------------ bird beak
*/

    .pajaro:before {
        background: #FFC37F;
        border-radius: 100% 0% 20% 0%;
        margin-top: 3px;
        margin-left: -4px;
        width: 6px;
        height: 6px;
        transform: rotateZ(45deg);
    }

/*------------------------------------------------------ wings animation
*/

@keyframes alas {
    50% {
        transform: rotateX(-1440deg);
    }
}

/*------------------------------------------------------ bird animation
*/

@keyframes planeo {
    40% {
        transform: rotateZ(2deg) translateX(2px) translateY(10px) translateZ(0);
        line-height: 16px;
        font-size: 0.6em;
    }

    80% {
        transform: rotateZ(-2deg) translateX(5px) translateY(8px) translateZ(0);
    }
}