@import url('https://fonts.googleapis.com/css2?family=Nunito&family=Open+Sans:wght@400;700&display=swap');

html {
    /* Always display a vertical scroll bar, so centered content doesn't move when one appears */
	overflow-y: scroll; 
}

body {
    background: #f3f3f3;
    margin-top: 0;
    margin-bottom: 1em;
    margin-left: auto;
    margin-right: auto;
    font-family: 'Open Sans', sans-serif;
    font-size: 112.5%; /* 18px if the browser default is 16px */
    line-height: 140%;
    width: 50em;
}

/* Background */
.container {
    background: white;
    padding: 2em;
    margin: 0;
    border: 1px solid #cccccc;
    border-radius: 8px;
}

.container>*:first-child {
    margin-top: 0;
}

.container>*:last-child {
    margin-bottom: 0;
}

#content-wrapper {
    border-top: 0;
    border-top-right-radius: 0;
    border-top-left-radius: 0;
}

/* Make links unobtrusive in general */
a:link          { color: black; text-decoration: none; } /* unvisited link */
a:visited    { color: black; text-decoration: none; } /* visited link */
a:hover        { color: blue;  text-decoration: underline; } /* mouse over link */
a:active      { color: red;   text-decoration: underline; } /* selected link */

/* Allow links to be visible */
a.link:link          { color: blue; text-decoration: none; } /* unvisited link */
a.link:visited    { color: purple; text-decoration: none; } /* visited link */
a.link:hover        { text-decoration: underline; } /* mouse over link */
a.link:active      { color: red;   text-decoration: underline; } /* selected link */

noscript {
    color: darkgrey;
}

#site-header {
    padding: 1em 0 1em 1em; /* Turn off right padding to fix overflow in Ubuntu Firefox */
    background: #3366cc;
    border: 1px solid #cccccc;
    border-top: 0;
}

#site-header h1 {
    display: inline-block;
    margin: 0 0 0 0.5em;
    width: 45%;
    color: white;
    font-size: 1.4em;
    font-family: 'Nunito', Verdana, sans-serif;
    text-shadow: 0px 1px 1px rgba(0,0,0,0.5);
}

#site-header h1>a {
    color: white;
}

#site-header a:hover {
    text-decoration: none;
}

#site-navigation {
    display: inline-block;
    width: 50%;
    text-align: right;
}

#site-navigation a {
    display: inline-block;
    padding: 0.2em 0.6em;
    text-align: center;
    font-weight: bold;
    color: white;
    text-shadow: 0px 1px 1px rgba(0,0,0,0.3);    
    border-style: none;
    border-radius: 8px;
    transition: all 0.15s ease 0s;
}

#site-navigation a+a {
    margin-left: 0.5em;
}

#site-navigation a:hover, #site-navigation [href="#"] {
    background-color: #1f3d7a;
}

/* Teaching */

#pastCourses-header {
    margin-top: 2em;
}

ul.courses {
    list-style-type: none;
    padding-left: 0.2em;
}

ul.courses .date {
    width: 7em;
    display: inline-block;
    text-align: right;
}

@media all and (max-width: 56em) {
    body {
        width: 100%; 
        font-size: 100%;
    }

    .container {
        padding: 2em 0.5em;
    }
  
    #site-header {
        padding: 0.3em;
    }

    #site-header h1 {
        display: block;
        width: 21.43em; /* 30 / 1.4 */
        margin: auto;
        margin-top: 0.2em;
        padding-left: 0.5em;
    }
  
    #site-navigation {
        display: block;
        width: 30em;
        margin: auto;
        margin-top: 0.3em;
        text-align: center;
    }

    #site-navigation a+a {
        margin-left: 1em;
    }
}

@media all and (max-width: 33em) {
    .container {
        padding: 0.5em; /* Setting the padding to 0 makes the margins collapse and the background show through */
    }

    body {
        font-size: 90%;
    }

    #site-navigation {
        width: 21.5em;
        margin-top: 0.2em;
    }
    
    #site-navigation a {
        margin: 0;
        padding: 0.15em 0.5em;
    }

    #site-navigation a+a {
        margin-left: 0.15em;
    }
}