/********************************
* Default Styles - Mobile First
********************************/

body {
    font-family: sans-serif;
    font-size: 18px;
    margin: 0;
    padding: 0;
}

body,
caption,
th,
td,
input,
textarea,
select,
option,
legend,
fieldset,
h1,
h2,
h3,
h4,
h5,
h6 {
    font-size-adjust: 0.5;
}

.wrapper {
    display: flex;
    flex-flow: column;
    flex-wrap: nowrap;
    padding: .5em;
}

h1 {
    font-size: 1.05em;
    /*	line-height: 1.25;*/
}


/*******************************
* Page Header Styles
* Background Image
*******************************/


/*	Background Images - use with Small screens */

.page-header {
    background-image: url(/responsive-media/images/nps-logo-50.png), url(/responsive-media/images/grand-canyon-400.jpg);
    background-repeat: no-repeat, no-repeat;
    background-position: right, center;
    background-size: auto, cover;

}


/*******************************
* Page Navigation Styles
*******************************/

.page-nav {
    background-color: rgb(0, 0, 0);
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 100;
}

.page-nav ul {
    display: flex;
    align-items: stretch;
    height: 2.5em;
    margin: 0;
    padding: 0;
    list-style: none;
}

.page-nav li {
    flex: 1;
    display: flex;
    justify-content: center;
}

.page-nav a {
    text-decoration: none;
    color: #fff;
    display: flex;
    flex: 1;
    justify-content: center;
    align-items: center;
}


/********************************
* Main Content Styles
********************************/

.main {
    font-size: 1em;
    line-height: 1.25;
    margin: 0 auto;
    position: relative;
}

.featured-image {
    margin: 1em 0;
}

.featured-image img {
    display: block;
    width: 100%;
    height: auto;
}

.image-caption {
    padding: .25em 1em;
    font-family: serif;
    font-size: 80%;
    background: rgba(0, 0, 0, .1);
}

.featured-video {
    display: block;
    width: 100%;
    height: auto;
}


/*******************************
* Page Footer Styles
*******************************/

.page-footer {
    background-color: rgba(0, 0, 0, .8);
    color: #fff;
    padding: 0 .5em;
    margin-bottom: 2.5em;
}

.page-footer ul {
    display: flex;
    margin: 0;
    padding: 0;
    list-style: none;
}

.page-footer li {
    flex: auto;
}

.page-footer p {
    margin: 0;
}

.credits {
    font-size: .8em;
}


/********************************
* Medium Screen Styles
* 750px viewport / 18px font = 41.67em
********************************/

@media (min-width: 41.67em) {
    body {
        font-size: 1.25em;
    }
    h1 {
        font-size: 2em;
        line-height: 1.125;
    }
    /*	Background Images - Use with medium screens */
    .page-header {
        background-image: url(/responsive-media/images/nps-logo-100.png), url(/responsive-media/images/grand-canyon-800.jpg);
        background-repeat: no-repeat, no-repeat;
        background-position: right, center;
        background-size: auto, cover;

    }
    .page-nav {
        position: relative;
    }
    .page-nav li {
        flex: 0 1 20%;
    }
    .main {
        line-height: 1.375;
    }
    .featured-image {
        margin: 0 1em 1em 0;
        float: left;
        width: 50%;
    }
    .featured-video {
        float: left;
        display: inline-block;
        width: 50%;
        height: auto;
        margin: 0 1em 1em 0;
    }
    .featured-video+p {
        clear: both;
    }
    .page-footer {
        margin-bottom: .5em;
    }
}


/********************************
* Large Screen Styles
* 1200px viewport / 18px font = 66.7em
********************************/

@media (min-width: 66.7em) {
    body {
        font-size: 1.5vw;
    }
    h1 {
        font-size: 3em;
        line-height: 1.05;
    }
    /*	Background Images - Use with large screens */
    .page-header {
        background-image: url(/responsive-media/images/nps-logo-150.png), url(/responsive-media/images/grand-canyon-1200.jpg);
        background-repeat: no-repeat, no-repeat;
        background-position: right, center;
        background-size: auto, cover;

    }
    .page-nav li {
        flex: 0 1 10%;
    }
    .main {
        max-width: 80%;
        padding-right: 2em;
        padding-left: 2em;
    }
}