/* style_general.css */

/*
 * Variables
 */

:root {
    /* light colors */
    --col-bg: White;
    --col-main: Black;
    --col-off: Grey;
    --col-so-off: #ddd;
    --col-light: SteelBlue;
    /* dark colors */
    --col-dark-bg: SlateGrey;
    --col-dark-main: Snow;
    /* general */
    --border-radius: 2px;
}

/*
 * General
 */

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--col-bg);
    font-family: Georgia, Times, Times New Roman, serif;
    font-size: 16px;
    line-height: 1.4;
    color: var(--col-main);
    text-align: justify;
}

h2 {
    font-size: 21px;
}

a {
    color: var(--col-light);
}

img {
    display: block;
    margin: 0 auto;
}

form {
    width: 100%;
}

input[type="text"] {
    border: none;
    border-bottom: 1px solid var(--col-so-off);
}

input[type="text"]:focus {
    border-bottom: 1px solid var(--col-main);
}

input[type="text"]:disabled {
    background: inherit;
}

textarea {
    display: block;
}

textarea:focus, input[type="text"]:focus{
    outline: none;
}

button {
    cursor: pointer;
    padding: 4px;
    font-family: inherit;
    font-size: 90%;
    background-color: var(--col-dark-bg);
    color: var(--col-dark-main);
    border: 1px solid var(--col-dark-main);
    border-radius: var(--border-radius);
    box-shadow: 5px 5px 3px 0px rgba(0,0,0,0.5);
}

button:hover {
    background-color: var(--col-light);
    box-shadow: 2px 2px 3px 0px rgba(0,0,0,0.5);
}

button:focus {
    outline: 1px solid var(--col-off);
}

button:disabled, button:disabled:hover {
    cursor: default;
    background-color: var(--col-off);
    box-shadow: 2px 2px 3px 0px rgba(0,0,0,0.5);
}

progress {
    margin: 0 1em;
}

/*
table, th, td {
  border: 1px solid black;
  border-collapse: collapse;
  border-style: dotted;
}

table {
    text-align: center;
}
*/

abbr[title] {
    cursor: help;
}

.unselectable {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.pointer {
    cursor: pointer;
}

.monospace {
    font-family: Courier New,Courier,Lucida Sans Typewriter,Lucida Typewriter,monospace;
}

.invisible { display: none; }

.small-text { font-size: 90%; }

.left { text-align: left; }

.right { text-align: right; }

.center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.float-right { float: right; }
.float-left { float: left; }

.clear-right { clear: right; }
.clear-left { clear: left; }

.big-vertical-m { margin-top: 100px; margin-bottom: 100px; }

.huge-vertical-m { margin-top: 200px; margin-bottom: 200px; }

.no-top-m { margin-top: 0; }

.no-bottom-m { margin-bottom: 0; }

.off { color: var(--col-off); }

.main-color { color: var(--col-main); }

.red { color: red };

.border {
    border: 1px solid black;
    border-radius: var(--border-radius);
}

.outline-text {
    outline: 1px dotted black;
    outline-offset: 0.5em;
}

.shadow { box-shadow: 10px 10px 3px 0px rgba(0,0,0,0.5); }

.indent { text-indent: 3em; }

.row { display: flex; }

.column-l {
    flex: 50%;
    margin-right: 25px;
}

.column-r {
    flex: 50%;
    margin-left: 25px;
}

.column-c {
    width: 50%;
    margin: 0 auto;
}

.big-break { margin: 100px 0; }

.custom-link, .popup-link {
    color: var(--col-light);
    cursor: pointer;
}

.popup {
    display: none;
    position: absolute;
    max-width: 250px;
    text-align: left;
    word-wrap: break-word;
    background-color: var(--col-dark-bg);
    color: var(--col-dark-main);
    border: 1px solid var(--col-dark-main);
    border-radius: var(--border-radius);
    box-shadow: 10px 10px 3px 0px rgba(0,0,0,0.5);
}

.popup p, .popup h2, .popup h3 {
    margin: 4px;
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.gallery div {
    margin: 4px;
    width: 250px;
    border: 1px solid var(--col-main);
    border-radius: var(--border-radius);
    box-shadow: 5px 5px 3px 0px rgba(0,0,0,0.5);
}

.gallery div:hover { box-shadow: 2px 2px 3px 0px rgba(0,0,0,0.5); }

.gallery img { width: 100%; }

/*
 * Specific
 */

#site {
    margin: 0 auto;
    width: 900px;
}

#book {
    margin: 0 auto;
    width: 700px;
    font-size: 120%;
}

#header {
    margin: 100px 0;
}

#header h1, #header p {
    margin: 0;
}

#side-boxes {
    position: fixed;
    width: 250px;
    top: 10%;
    left: 50%;
    transform: translateX(-750px);
    z-index: 6;
}

@media screen and (max-width: 1520px) {
    #side-boxes { display: none; }
}

.side-box {
    background-color: var(--col-so-off);
    border: 1px solid var(--col-main);
    border-radius: var(--border-radius);
    box-shadow: 5px 5px 3px 0px rgba(0,0,0,0.5);
    margin-bottom: 1em;
}

.side-box-hide {
    cursor: pointer;
    text-decoration: underline;
}

.side-box ol, .side-box ul, .side-box p {
    margin: 4px;
    padding-left: 1em;
}

.side-box ul {
    list-style-type: "_. ";
}

.side-box li {
    list-style-position: inside;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.side-box a { color: var(--col-main); }

#footer {
    margin: 100px 0;
}