/* vars */
:root {
    --c-dark:     #292f2f;
    --c-bg-dark:  #3a4346;
    --c-bg-light: #4c5456;
    --c-light:    #ecf7fa;
    --c-hl-dark:  #008499;
    --c-hl-light: #3baec4;
    --c-shadow:   #dae5e2;

    /* backgrounds */
    --navbar-bg:    var(--c-dark);
    --jumbotron-bg: var(--c-bg-dark);
    --copyright-bg: var(--c-dark);

    /* link colors */
    --link-color:         var(--c-hl-dark);
    --link-hover-color:   var(--c-hl-light);
    --footer-link-color:  var(--c-light);
    --footer-hover-color: #fff;

    /* text colors */
    --text-color:           var(--c-dark);
    --footer-text-color:    var(--c-light);
    --copyright-text-color: var(--c-light);
    --jumbotron-text-color: var(--c-light);
    --art-date-color:       color(var(--c-dark) tint(50%));

    /* background colors */
    --background-color: var(--c-light);

    /* box colors */
    --border-color:        var(--c-dark);
    --box-color:           var(--c-bg-light);
    --box-hover-color:     var(--c-dark);
    --box-round:           10px;
    --navbar-border-color: var(--border-color);
    --footer-shadow-color: rgba(150,150,150,.36);

    /* other */
    --max-width:     600px;
    --max-width-box: 800px;
    --margin-box-fa: 5px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --text-color:        var(--c-light);
        --background-color:  var(--c-dark);
        --link-color:        #00c8e8;
        --link-hover-color:  #21a9c1;
        --c-shadow:          var(--c-bg-light);
        --border-color:      #000000;
        --navbar-border-color: var(--c-dark);
        --footer-shadow-color: rgba(70, 70, 70, 0.5);
    }
}

@custom-media --max-sm all and (max-width: 600px);
@custom-media --max-md all and (max-width: 800px);
@custom-media --max-rem all and (max-width: 60rem);
@custom-media --sm-md (max-width: 850px) and (min-width: 600px);

/* reset css for browser compat */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* global */
body {
    font-family: 'Open Sans', sans-serif;
    font-feature-settings: "lnum";
    font-variant-numeric: lining-nums;
    color: var(--text-color);
    background-color: var(--background-color);
    font-size: 14px;
    min-height: 100vh;
    height: auto;
}

.invisible {
    display: none;
}

a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    color: var(--link-hover-color);
}

img {
    max-width: 100%;
}

/* navbar */
.navbar {
    color: var(--c-light);
    width: 100%;
    height: 50px;
    background-color: var(--navbar-bg);
    box-shadow: 0 3px 4px rgba(0, 0, 0, 0.5);
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--navbar-border-color);
    z-index: 100;
    padding-right: 5px;
}

@media (--max-sm) {
    .navbar {
        position: absolute;
    }
}

.navbar a {
    margin-top: 2px;
    height: 40px;
}

/* nav = navbar
 * pia = Private Internet access
 */
#nav-logo { order: 10; }

#nav-jump { order: 1000; }

#nav-search {
    order: 20;
    margin-left: auto;
    line-height: 35px;
}

#nav-search input {
    background-color: var(--c-bg-dark);
    border-style: none;
    border-radius: 2px;
    color: var(--c-light);
    padding: .5em;
    padding-right: 2em;
    margin-right: -2em;
}

#nav-label {
    display: inline-block;
    width: 2em;
    margin-right: .7em;
}

@media (--max-sm) {
    #nav-search {
        order: 100;
        margin: 0 .5em;
    }

    #nav-label {
        width: auto;
        margin: 0 .5em;
    }

    #nav-searchbox:not(:focus) {
        display: inline-block;
        position: absolute;
        height: 0;
        width: 0;
        padding: 0;
        margin: 0;
        background: transparent;
        overflow: hidden;
    }

    #nav-searchbox:focus {
        position: absolute;
        visibility: visible;
        outline: none;
        top: 0;
        left: 0;
        right: 0;
        height: 50px;
        line-height: 50px;
        font-size: 1.5em;
        padding-right: 2.5em;
        width: 100%;
    }

    #nav-searchbox:focus + #nav-label {
        display: block;
        position: absolute;
        pointer-events: none;
        top: 0;
        right: 0;
        width: 1.5em;
        font-size: 2em;
        line-height: 50px;
        padding-top: -.1em;
        margin: 0;
    }
}

/* n = nav */
.nlogo { height: 40px; }

/* t = text (used in jumbotron for small logo as text) */
.tlogo {
    height: 2.4ex;
    margin-bottom: -.47ex;
    margin-left: -10px;
    margin-right: -10px;
}

@media (--max-md) {
    margin-left: -5px;
    margin-right: -5px;
}

/* main */
.container {
    width: 100%;
    min-height: 100vh;
    padding-top: 50px;
    padding-bottom: 17.5rem;
}

.main {
    margin: 2em auto;
    padding: 0 .75em;
    max-width: var(--max-width);
    line-height: 1.8;
}

.main h1,
.main h2,
.main h3,
.main h4,
.main h5,
.main h6,
.main li,
.main pre,
.main p,
.main blockquote {
    margin-top: .7em;
}

.artlist li {
    margin-top: 0;
}

.main h1 + p,
.main h2 + p,
.main h3 + p,
.main h4 + p,
.main h5 + p,
.main h6 + p,
.main blockquote > p:first-child {
    margin-top: 0;
}


.main pre {
    padding: .5em .75em;
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.main :not(pre)>code {
    padding: 0 0.2em;
}

.main pre, .main :not(pre)>code {
    background: var(--c-shadow);
    border-radius: .25em;
}

.toclink,
.toclink:hover {
    color: var(--text-color);
}

.toclink::after {
    content: ' \f13d';
    font-family: FontAwesome;
    color: var(--link-color);
    font-weight: normal;
    opacity: 0;
    transition: opacity .08s;
}

.toclink:hover::after {
    opacity: 1;
    color: var(--link-hover-color);
}

@media (--max-sm) {
    .toclink::after {
        opacity: 1;
    }
}

ul {
    padding-left: 2em;
    list-style-type: disc;
}

ol {
    padding-left: 2em;
    list-style-type: decimal;
}

hr {
    margin-top: .8em;
    margin-bottom: .8em;
}

table {
    border: 1px solid var(--border-color);
    border-collapse: collapse;
}

th, td {
    margin: .2em;
}

th {
    background-color: var(--c-bg-dark);
    color: var(--c-light);
}

td {
    padding: .2em .5em;
}

td:not(:first-child), th:not(:first-child) {
    border-left: 1px solid var(--border-color);
}

tr:nth-child(even) {
    background-color: var(--c-shadow);
}

/* jumbotron */
.jumbotron {
    position: relative;
    width: 100%;
    margin-top: -50px;
    background: var(--jumbotron-bg);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.6);
    color: var(--jumbotron-text-color);
    padding: 4em 0 4em 0;
}

/* j = jumbotron */
.jindex {
    z-index: 99;
}

.jlogo {
    display: block;
    margin: 25px auto;
}

.jpia {
    position: absolute;
    height: 40px;
    right: 0;
    top: 0;
    margin: 25px;
}

@media (--max-sm) {
    .jlogo {
        margin: 2em auto -2em auto;
    }
    .jumbotron {
        padding-bottom: 2em;
    }
}

.child {
    text-align: center;
    margin: .5em auto;
    font-size: 32px;
    line-height: 48px;
    max-width: 75%;
}

.box-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-items: stretch;
    max-width: var(--max-width-box);
    margin: 0 auto;
}

.box {
    text-align: center;
    text-decoration: none;
    color: var(--jumbotron-text-color);
    margin-bottom: 5px;
    flex-basis: 30%;
    min-width: 26%;
    background-color: var(--box-color);
    border-radius: var(--box-round);
    padding: 1em;
}

.box:hover,.box:active {
    color: var(--jumbotron-text-color);
    background-color: var(--box-hover-color);
}

.box span {
    position: relative;
    top: initial;
    font-size: 20px;
    font-weight: 600;
    line-height: 16px;
    display: block;
    margin-top: .75em;
}

/* fa = font awesome */
.fa-users {
    margin-top: var(--margin-box-fa);
}

.fa-comments,.fa-question {
    margin-bottom: var(--margin-box-fa);
}

.title {
    text-align: center;
}

@media (--max-md) {
    .box {
        text-align: center;
    }

    .child {
        font-size: 20px;
        line-height: 30px;
        padding: 10px 0 5px;
    }

    .fa-4x {
        padding: 0;
        margin: 0;
        width: 60px;
        text-align: center;
        font-size: 28px;
    }

    .box-container {
        flex-direction: column;
        margin: 0 .5em;
    }

    .box span {
        font-size: 22px;
        line-height: 22px;
        padding-left: 8px;
        font-weight: bold;
        position: relative;
        display: inline-block;
        text-align: center;
        margin-top: 0;
    }

    .box {
        text-align: left;
        border-radius: calc(var(--box-round) / 2);
        margin: 5px 0;
    }
}

/* articles */
h1 {
    margin: 0;
}
/* art = article */
.artlist ul {
    padding: 0;
    list-style-type: none;
}

.art-info {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: baseline;
}

.art-info h1 {
    margin-top: 0;
    display: inline;
    margin-right: 2em;
}

.art-warning {
    margin-bottom: 2em;
    padding: .5em;
    border: 1px solid var(--border-color);
    color: red;
}

.art-body {
    margin-bottom: 1em;
}

@media(--max-sm) {
    .artlist .heading {
        padding: 0 0.75em;
    }
}

.artlist ul {
    max-width: var(--max-width);
    margin: 2em auto;
    margin-top: .5em;
}

.artlist li:not(:first-child) {
    border-top: 1px solid var(--border-color);
}

.artlist .art {
    font-weight: bold;
    font-size: 120%;
}

.art-date {
    display: inline-block;
    vertical-align: baseline;
    line-height: 1;
    white-space: nowrap;
    color: var(--art-date-color);
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

.artlist .art-date {
    margin-bottom: .5em;
}

.art-nav {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
}

.art-nav * {
    flex-basis: 30%;
}

.art-nav *:nth-child(1) { text-align: left; }
.art-nav *:nth-child(2) { text-align: center; }
.art-nav *:nth-child(3) { text-align: right; }

blockquote {
    padding-left: 1em;
    display: inline-block;
    border-left: .5em solid var(--c-shadow);
    font-style: italic;
}

@media (--max-md) {
    .main.artlist {
        padding-left: 0;
        padding-right: 0;
    }

    .artlist .art-info {
        padding: 0 .75em;
    }
}

/* faq */
/* kb = knowledge base */
.kb-index {
    list-style-type: none;
    padding-left: 0;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: stretch;
}

.kb-index li {
    display: block;
    flex: 1 1 15em;
    height: 3em;
    margin: 1em;
}

.kb-index li h2 {
    margin-top: 0;
}

.kb-index a {
    display: block;
    color: var(--text-color);
    width: 100%;
    height: 100%;
}
.kb-index a h2 {
    color: var(--link-color);
}
.kb-index a:hover h2 {
    color: var(--link-hover-color);
}

/* footer */
.footers {
    /*min-height: 30vh;*/
    margin-top: -17rem;
    min-height: 17rem;
}

.footer {
    background: var(--jumbotron-bg);
    color: var(--footer-text-color);
    width: 100%;
    box-shadow: 0 -3px 5px var(--footer-shadow-color);
    min-height: 15.4rem;
    padding: 3em 0;
}

.footer .fa-fw {
    height: 14px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    margin: 0 auto;
}

.footerchild {
    margin: 0 2em;
    margin-top: .5em;
    flex-grow: 1;
    flex-shrink: 0;
}

.footerchild:last-child {
    margin-bottom: .5em;
}

.footer-push {
    margin-left: auto;
    width: max-content;
}

footer a {
    color: var(--footer-link-color);
}

footer a:hover {
    color: var(--footer-hover-color);
}

.footer h2 {
    margin-bottom: .1em;
    display: inline-block;
}

.footerchild ul, .footerchild ul ul {
    padding-left: 0;
    margin-left: 10px;
    margin-right: 10px;
    list-style-type: none;
}

.footerchild ul ul {
    padding-left: 30px;
}

@media (--max-sm) {
    .footer-container {
        flex-direction: column;
    }

    .footer-push {
        margin-left: 0;
        width: 100%;
    }

    .footerchild ul li:last-child {
        margin-bottom: .5em;
    }

    .footer-push ul li:last-child {
        margin-bottom: .1em;
    }

    /* hdn = hidden */
    .hdn {
        display: none;
    }
    .footer {
        padding: .5em 0;
    }
    .footer li a {
        line-height: 1.8;
    }
    .footer-push ul {
        display: flex;
        flex-wrap: wrap;
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
        text-align: center;
    }
    .footer-push ul li {
        display: inline-block;
        font-size: 2.5rem;
    }
    .footerchild ul li img,
    .footerchild ul li .fa-fw {
        height: 3.5rem;
    }
}

@media (--sm-md) {
    .footer-container {
        flex-flow: row wrap;
        position: relative;
        width: 95vw;
    }

    .footerchild {
        flex-basis: 40%;
        margin-bottom: 1em;
    }

    .footer-push {
        margin-left: 0;
    }
}

.footer h2, .footer h3 {
    margin-left: 10px;
    margin-right: 10px;
}

footer.copyright {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    background: var(--copyright-bg);
    min-height: 1.5rem;
    color: var(--copyright-text-color);
    padding-left: .5em;
    padding-right: .5em;
    overflow: hidden;
}

footer.copyright div {
    display: flex;
    align-items: center;
    height: 1.6rem;
    line-height: 1.6rem;
    vertical-align: top;
}

.copyright * {
    margin: 0;
    height: 1.6rem;
    line-height: 1.6rem;
}

.copyright .fa {
    height: 100%;
    vertical-align: top;
    font-size: 1.4em;
}

.copyright .footer-link {
    height: 28px;
    margin-right: .5em;
}

.copyright img {
    width: auto;
}
