:root {
    --red-dark: #850000;
    --red-bright: #DC0000;
    --gray-dark: #111;
    --gray-darkish: #222;
    --gray-bright: #ccc;
    --gray-darker: black;
    --gray-brighter: white;
    --yellow-dark: #FFDB89;
    --yellow-bright: #FFF6C3;
    --green-dark: green;
}

html, body {
    font-family: sans-serif;
    color: var(--gray-bright);
    background-color: var(--red-dark);
    text-shadow: 0 0 1em var(--gray-darker);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}
body { padding-bottom: 100px; }
h1 { padding: 1em 0; margin: 0; }
h2 { padding: 2em 0; margin: 0; }
a {
    text-decoration: none;
    color: var(--yellow-dark);
}
a:visited,a:target { color: var(--yellow-dark); }
a:hover { color: var(--red-bright); }
a:hover *, a:visited *, a:target * { color: var(--gray-bright); }

.btn {
    border: 2px solid var(--red-dark);
    background-color: var(--gray-darker);
    color: var(--yellow-dark);
    padding: .7em 1.4em;
    cursor: pointer;
}
.btn:hover {
    background-color: var(--gray-dark);
    color: var(--red-bright);
}
.icn-download::before {
    content: '\02193';
    padding-right: .5em;
    font-size: 1.5em;
    vertical-align: middle;
}
.icn-go::before {
    content: '\02192';
    padding-right: .5em;
    font-size: 1.5em;
    vertical-align: middle;
}

.center { text-align: center; }
.left { text-align: left; }
.invert {
    background-color: #222;
}
.block {
    margin: 1em;
    padding: 1em 0;
    display: inline-block;
    text-align: center;
}
.block > img {
    padding: 0 1em;
    height: 160px;
}
.block:hover {
    filter: drop-shadow(0 0 15px var(--yellow-bright));
}
.expand { outline: none; position: relative; overflow: hidden; }
.expand:focus, .expand:focus-within {
    filter: none;
    display: block;
    margin-left: 0;
    margin-right: 0;
    background-color: var(--gray-darkish);
    mask-image: url("img/mask/rect-mask_1.png");
}
*[tags] { position: relative; }
*[tags]::after {
    content: attr(tags);
    position: absolute;
    top: 1em; right: 0;
    background-color: var(--gray-darkish);
    border-radius: 0.5em;
    color: var(--gray-brighter);
    padding: 3px 6px;
    border: 1px solid var(--gray-brighter);
    max-width: 50%;
}
*[tags]:focus::after, *[tags]:focus-within::after { display: none; }
.collapsed { display: none !important; }
.expand:focus .collapsed, .expand:focus-within .collapsed { display: inline-block !important; }

*[tags][langs~="en"]::after{ content: attr(tags) "\a" url('img/flags/en.gif'); }
*[tags][langs~="it"]::after{ content: attr(tags) "\a" url('img/flags/it.gif'); }
*[tags][langs~="it"][langs~="en"]::after{ content: attr(tags) "\a" url('img/flags/en.gif') url('img/flags/it.gif'); }

.gallery { overflow: visible; }
.gallery img {
    height: 100px;
    max-height: 100vh;
    max-width: 100vw;
    transition: scale .2s linear;
    margin: 2em;
}
.gallery img:hover { scale: 400%; }

.gallery.horizontal {
    overflow-y: hidden;
    overflow-x: auto;
    max-width: 100%;
    white-space: nowrap;
}
.gallery.horizontal img {
    height: 300px;
    margin: .5em;
}
.gallery.horizontal img:hover { scale: 100%; }

.code { font-family: monospace; }
.spaced { margin: 2em; display: inline-block; }
.spaced-x { margin-left: 2em; margin-right: 2em; }

.align-top > * { vertical-align: top; }

.after-it:after {
    content: '.it';
    font-size: 50%;
    color: var(--red-bright);
}

.bg-mask {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}
.mask {
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
}
.mask.horizontal { mask-repeat: repeat-x; mask-size: auto 100%; }
.mask.vertical { mask-repeat: repeat-y; mask-size: 100% auto; }

.bg-mask.round-1 { background-image: url("img/mask/round-mask_1.png"); }
.bg-mask.round-2 { background-image: url("img/mask/round-mask_2.png"); }
.bg-mask.round-3 { background-image: url("img/mask/round-mask_3.png"); }
.bg-mask.round-4 { background-image: url("img/mask/round-mask_4.png"); }
.bg-mask.round-5 { background-image: url("img/mask/round-mask_5.png"); }
.bg-mask.round-6 { background-image: url("img/mask/round-mask_6.png"); }
.bg-mask.round-7 { background-image: url("img/mask/round-mask_7.png"); }
.bg-mask.round-8 { background-image: url("img/mask/round-mask_8.png"); }
.bg-mask.round-9 { background-image: url("img/mask/round-mask_9.png"); }
.bg-mask.round-10 { background-image: url("img/mask/round-mask_10.png"); }
.bg-mask.round-11 { background-image: url("img/mask/round-mask_11.png"); }
.bg-mask.round-12 { background-image: url("img/mask/round-mask_12.png"); }

.mask.round-1 { mask-image: url("img/mask/round-mask_1.png"); }
.mask.round-2 { mask-image: url("img/mask/round-mask_2.png"); }
.mask.round-3 { mask-image: url("img/mask/round-mask_3.png"); }
.mask.round-4 { mask-image: url("img/mask/round-mask_4.png"); }
.mask.round-5 { mask-image: url("img/mask/round-mask_5.png"); }
.mask.round-6 { mask-image: url("img/mask/round-mask_6.png"); }
.mask.round-7 { mask-image: url("img/mask/round-mask_7.png"); }
.mask.round-8 { mask-image: url("img/mask/round-mask_8.png"); }
.mask.round-9 { mask-image: url("img/mask/round-mask_9.png"); }
.mask.round-10 { mask-image: url("img/mask/round-mask_10.png"); }
.mask.round-11 { mask-image: url("img/mask/round-mask_11.png"); }
.mask.round-12 { mask-image: url("img/mask/round-mask_12.png"); }
.mask.rect-1 { mask-image: url("img/mask/rect-mask_1.png"); }

.field {
    color: var(--gray-bright);
    background-color: var(--gray-darker);
    text-shadow: 0 0 1em var(--gray-darker);
    min-width: 320px;
    border: none;
    padding: 1em;
    font-family: sans-serif;
    font-size: 1em;
}

p { margin: 0; padding: 1em; }
.error { color: var(--red-bright); }
.warning { color: var(--yellow-dark); }
.success { color: var(--green-dark); }

@font-face {
    font-family: NewKrytan;
    src: url('fonts/NewKrytan.ttf');
}

@keyframes text-glitch {
    0% { font-family: sans-serif; }
    91% { transform: skewX(0deg); }
    91.3% { transform: skewX(-60deg); }
    91.4% { transform: skewX(0deg); }
    97% { transform: skewX(0deg); font-family: sans-serif; }
    97.3% { transform: skewX(-60deg); letter-spacing: normal; }
    97.4% { transform: skewX(0deg); font-family: NewKrytan; letter-spacing: -0.25em; }
    99.6% { transform: skewX(0deg); font-family: NewKrytan; letter-spacing: -0.25em; }
    99.9% { transform: skewX(-60deg); letter-spacing: normal; }
    100% { transform: skewX(0deg); font-family: sans-serif; }
}
.text-glitch { animation: text-glitch 30s infinite; }

.upper { text-transform: uppercase; }