/* Three themes: the original colours, and plain black on white ("light") or white
   on black ("dark") with high contrast, for a black-and-white monitor; js/theme.js
   switches them. */
:root {
  color-scheme: light;
  --fg: #000000;
  --page-bg: #ffffff;
  --panel-bg: #f5f5f5;
  --line: #3c67be;
  --bar-bg: #3c67be;
  --bar-fg: #ffffff;
  --soft-bg: #c5d7fb;
  --hover-bg: #3c67be;
  --hover-fg: #ffffff;
  --accent: #3c67be;
  --muted: #c5d7fb;
  --comment-bg: #e4e4e4;
  --form-bg: #f2f2f2;
  --input-bg: #ffffff;
  --input-border: #cccccc;
}

html[data-theme="light"] {
  color-scheme: light;
  --fg: #000000;
  --page-bg: #ffffff;
  --panel-bg: #ffffff;
  --line: #000000;
  --bar-bg: #ffffff;
  --bar-fg: #000000;
  --soft-bg: #ffffff;
  --hover-bg: #000000;
  --hover-fg: #ffffff;
  --accent: #555555;
  --muted: #999999;
  --comment-bg: #dddddd;
  --form-bg: #eeeeee;
  --input-bg: #ffffff;
  --input-border: #000000;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --fg: #ffffff;
  --page-bg: #000000;
  --panel-bg: #000000;
  --line: #ffffff;
  --bar-bg: #000000;
  --bar-fg: #ffffff;
  --soft-bg: #000000;
  --hover-bg: #ffffff;
  --hover-fg: #000000;
  --accent: #bbbbbb;
  --muted: #666666;
  --comment-bg: #222222;
  --form-bg: #111111;
  --input-bg: #000000;
  --input-border: #ffffff;
}

/* the bars have the page colour there, so lines set them apart */
html:is([data-theme="light"], [data-theme="dark"]) header { border-bottom: 2px solid var(--line); }
html:is([data-theme="light"], [data-theme="dark"]) footer { border-top: 2px solid var(--line); }
/* transparent pictures in posts (black lines) stay readable */
html[data-theme="dark"] #middle img { background-color: #ffffff; }

body {
  font-family: arial;
  font-size: 22px;
  border: 2px solid var(--line);
  color: var(--fg);
  background-color: var(--page-bg);
  accent-color: var(--fg);
}

b, strong {
  font-weight: bold;
}

p {
  display: block;
  margin-top: 1em;
  margin-bottom: 1em;
  margin-left: 0;
  margin-right: 0;
}

dl {
  width: 100%;
  overflow: hidden;
  border-top: 1px solid var(--line);
}
dt {
  float: left;
  width: 50%;
  /* adjust the width; make sure the total of both is 100% */
  border-bottom: 1px solid var(--line);
}
dd {
  float: left;
  width: 50%;
  /* adjust the width; make sure the total of both is 100% */
  border-bottom: 1px solid var(--line);
}

.container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}


header {
  grid-column: span 3;
  position: relative;
  padding: 0 64px 10px;
  text-align: center;
  font-size: 2em;
  background-color: var(--bar-bg);
  color: var(--bar-fg);
}

main {
  flex: 1;
  padding: 20px;
  background-color: var(--panel-bg);
}

nav {
  background-color: var(--panel-bg);
  padding: 20px;
  text-align: center;
}

footer {
  grid-column: span 3;
  padding: 10px;
  text-align: center;
  font-size: 1.0em;
  background-color: var(--bar-bg);
  color: var(--bar-fg);
}

h1 {
  margin-bottom: 1em;
  font-size: 1.3em;
  font-weight: bold;
}

.title a:link, .title a:visited {
  color: var(--fg);
  text-decoration: none;
  font-variant: small-caps;
}

.menu a:link, #sideLeft a:visited { display: block; padding: 2px 0px 2px 10px; margin: 0px; background-color: var(--soft-bg); color: var(--fg); text-decoration: none; }
.menu a:hover { background-color: var(--hover-bg); color: var(--hover-fg); }

.date { font-weight: bold; border: 1px solid var(--line); margin: 0px 0px 20px 0px; padding: 3px; background-color: var(--soft-bg); color: var(--fg); }

.titulek { font-weight: bold; border-bottom: 1px solid var(--line); margin: 0px 0px 5px 0px; padding: 0px 0px 2px 0px; }
.titulek a:link, #titulek a:visited { color: var(--fg); text-decoration: none; }
.titulek a:hover { color: var(--accent); }

.meta { margin-bottom: 15px; }
.meta a:link, .meta a:visited { color: var(--accent); }
.meta a:hover { color: var(--accent); }

.postend { margin: 5px 0px 30px 0px; padding: 0px; text-align: center; color: var(--muted); font-size: 18px; line-height: 0px; }

a:link, a:visited { color: var(--fg); }
a:hover { color: var(--accent); }

.topics {
  border: 1px solid var(--line);
}

.topics a:not(:last-child) {
  border-bottom: 1px solid var(--line);
}

.img_flag {
    margin-left: 5px
}

.other-links {
  border: 1px solid var(--line);
  }

.other-links a:not(:last-child) {
  border-bottom: 1px solid var(--line);
}

.feedback {
  text-align: right;
}

@media (max-width: 720px) {
.nav-other {
  display: none;
  }

body {
  font-family: arial;
  font-size: 20px;
  border: 2px solid var(--line);
}

header {
font-size: 7vw;
}
}

.footer-other {
    text-align: center;
}

.footer-other a:link, #sideLeft a:visited { display: block; padding: 2px 0px 2px 10px; margin: 0px; background-color: var(--soft-bg); color: var(--fg); text-decoration: none; }
.footer-other a:hover { background-color: var(--hover-bg); color: var(--hover-fg); }

.comment_header {background-color: var(--comment-bg);}

.comment_title {
    font-size: 1.3em;
    font-weight: bold;
}

.comment_form input[type=text], input[type=number], input[type=password], textarea {
  width: 100%;
  padding: 5px 10px;
  margin: 5px 0;
  display: inline-block;
  border: 1px solid var(--input-border);
  background-color: var(--input-bg);
  color: var(--fg);
  border-radius: 4px;
  box-sizing: border-box;
  font-size: 24px;
}

.search_form input[type=text] {
  width: 100%;
  padding: 5px 10px;
  margin: 2px 0;
  display: inline-block;
  border: 1px solid var(--input-border);
  background-color: var(--input-bg);
  color: var(--fg);
  border-radius: 4px;
  box-sizing: border-box;
  font-size: 24px;
}

.comment_form input[type=submit], .search_form input[type=submit] {
  width: 200px;
  background-color: var(--soft-bg);
  color: var(--fg);
  padding: 7px 15px;
  margin: 8px 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  font-size: 24px;
}

.comment_form input[type=submit]:hover, .search_form input[type=submit]:hover {
  background-color: var(--hover-bg);
  color: var(--hover-fg);
  font-size: 24px;
}

.comment_form {
  border-radius: 5px;
  background-color: var(--form-bg);
  padding: 20px;
}

@media (min-width: 720px) {
  .container {
    display: grid;
    grid-template-columns: 250px 1fr;
    grid-template-rows: auto 1fr;
  }
  .comment_form input[type=text], input[type=password], textarea {
    width: 600px;
  }
  .topics_admin {
    display: inline;
  }
  .footer-other {
    display: none;
  }
  nav .menu {
    position: -webkit-sticky;
    position: sticky;
    top: 20px;
  }
}
/* colour switch in the top right corner of the page: a sun on a rectangle in the
   colours of the current theme, a rainbow for the original ones */
.theme-toggle {
  position: absolute;
  top: 10px;
  right: 10px;
  box-sizing: border-box;
  width: 52px;
  height: 30px;
  padding: 0;
  border: 2px solid var(--bar-fg);
  border-radius: 4px;
  background: linear-gradient(to right, #e40303, #ff8c00, #ffed00, #008026, #004dff, #750787);
  color: #ffffff;
  cursor: pointer;
}

.theme-toggle svg {
  display: block;
  width: 24px;
  height: 24px;
  margin: auto;
}

/* a black edge keeps the white sun readable on every colour of the rainbow */
.theme-toggle .sun-edge { stroke: #000000; stroke-width: 4.5; }

html[data-theme="light"] .theme-toggle { background: #ffffff; color: #000000; }
html[data-theme="light"] .theme-toggle .sun-edge { stroke: none; }
html[data-theme="dark"] .theme-toggle { background: #000000; }