/**
 * mikegerwitz.com stylesheet
 *
 * Copyright (C) 2019 Mike Gerwitz
 * This work is released under the Creative Commons Attribution
 * Share-Alike 4.0 International license.
 */

@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 400;
  src: local('Open Sans Regular'), local('OpenSans-Regular'), url('/fonts/OpenSans-Regular.woff') format('woff');
}
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 300;
  src: local('Open Sans Light'), local('OpenSans-Light'), url('/fonts/OpenSans-Light.woff') format('woff');
}
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 600;
  src: local('Open Sans SemiBold'), local('OpenSans-SemiBold'), url('/fonts/OpenSans-SemiBold.woff') format('woff');
}

html {
  /* see footer; just in case the page is too short */
  background-color: #2e3436;
}

body {
  background-color: white;

  /* TODO: slightly non-black color */

  margin: 0;
  padding: 2em 4em 0em 4em;
  /*padding: 1em 5em;*/

  text-align: justify;
  font-family: 'Open Sans', sans-serif;
}

a { color: #0066cc; }
a:visited { color: #6666cc; }

.title > a {
  color: black;
  text-decoration: none;
}


a.box {
  display: block;
  width: 200px;
  padding: 204px 0 0 0;

  border-width: 4px;
  border-style: solid;
  border-color: #2e3436;

  background-color: #2e3436;
  color: white;

  background-repeat: no-repeat;
  background-size: contain;

  text-align: center;
  font-weight: bold;
  font-size: 1.2em;

  text-decoration: none;
}

a.box:hover {
  border-top-width: 8px;
  padding-top: 200px;
  background-position: 0px -4px;
}

a.box:visited {
  color: white;
}


/* Asides should be dimmed so as not to distract from
   the main content. */
aside a.box {
  filter: grayscale(100%);
  transition: filter 0.25s;
}
aside a.box:hover {
  filter: none;
}


/* Link lists are to be styled in context-specific ways. */
ul.links {
  display: block;
  padding: 0;
  margin: 0;
  text-align: center;
}
ul.links > li {
  display: block;
  margin-top: 1em;
}
ul.links > li:first-child {
  margin-top: 0;
}


.talk ul.links {
  display: inline-block;
}


/* Talk images */
.talk .links a.video {
  display: block;
  background-repeat: no-repeat;

  line-height: 2em;  /* some space below image */
}
.talk .links a.video.lp-2016 {
  background-image: url('images/lp-2016.png');
  padding-top: 75px;
  min-width: 220px;
}
.talk .links a.video.lp-2017 {
  background-image: url('images/lp-2017.png');
  padding-top: 75px;
  min-width: 220px;
}
.talk .links a.video.lp-2018 {
  background-image: url('images/lp-2018.png');
  padding-top: 97px;
  min-width: 200px;
}


a.box.free-sw {
  background-image: url('images/tp/fsfs-icons-beige.png');
}
a.box.eff-privacy {
  background-image: url('images/tp/eff-privacy.png');
}


main {
  position: relative;
}

main > aside {
  float: right;
}
aside.sm {
  max-width: 30ch;
  font-size: 0.9em;
}


h1, h2, h3 {
  font-weight: normal;
}

h1 { font-size: 1.7em; }
h2 { font-size: 1.4em; }
h3 { font-size: 1.1em; }
h4 { font-size: 1.0em; }


h1 a, h1 a:visited {
  text-decoration: none;
  color: inherit;
}


header {
  position: relative;
  margin: 0 0 2em 0;
}

header h1 {
  font-size: 2em;
  margin: 0px 0px 0.1em 0px;
  text-align: left;
}

.title {
  text-align: left;
}

h2.desc {
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: normal;
  color: #666f63;

  margin: 0px 0px 2em 0px;
}

header nav {
  position: absolute;
  top: 0;
  right: 0;
}

.menu ul {
  display: inline-block;
  text-align: center;
  padding: 0;
  margin: 0;

  /* height of h1 to the left */
  line-height: 2em;
}
.menu li {
  display: inline-block;
  font-size: 1.1em;
  font-weight: bold;
}
.menu li a {
  color: #2e3436;
  text-decoration: none;
  padding: 0.15em 1em;
}
.menu li a:hover {
  border-bottom: 0.2ex solid #2e3436;
}


main {
  margin: auto;
  width: 90ch;
}

body.posts main {
  width: auto;
  max-width: 120ch;
}


/* Articles are formatted at a modest width that makes reading
   easier.  Reduced with makes it easier for the reader's eyes to scan to
   the next line.  Alternatively, the line spacing can be increased to make
   it easier for the eyes to not loose their way.  So the wider the text,
   the larger the line spacing. */

article {
  width: 70ch;
  line-height: 1.8em;
  margin: auto;
}
article.abstract {
  width: 60ch;
  line-height: 1.5em;
  margin: 0;
}

/* Main links appear to the right of the abstract. */
article.abstract ul.links {
  position: absolute;
  right: 0;
  min-width: 25ch;
}


article.abstract .title {
  display: inline-block;
  margin: 0;
  font-weight: bold;
  font-size: 1.1em;  /* h3 */
  text-align: left;
}

article:not(.abstract) > hgroup {
  margin: 0 -2rem;
}
article:not(.abstract) > h1:not(:first-child),
article:not(.abstract) > h2 {
  margin-left: -2rem;
  border-bottom: 2px solid #babdb6;
}
article:not(.abstract) > h3 {
  border-bottom: 1px solid #babdb6;
}

article .date {
  font-size: 0.9em;
  color: #666f63;
  margin-top: -1em;
}

article.abstract {
  margin-top: 1em;
}

article.abstract p:first-of-type {
  margin-top: 0;
}

/* Images are all centered by default. */
article img {
  display: block;
  margin: 0 auto;
}


section.compact {
  clear: both;
}

section.compact article {
  width: 48%;
  float: right;
}

/* the first child is the section heading, so odds should
   be on the left */
section.compact article:nth-child(2n) {
  float: left;
  clear: both;
}


/* posts */
body.posts section.compact:not(:first-child) {
  padding-top: 2em;
}
body.posts section.compact > h1 {
  text-align: center;
}


section .view-all {
  display: block;
  text-align: center;
  margin: 1em auto;
  clear: both;
}


section.highlight {
  position: relative;
  display: block;

  background-color: #2e3436;
  color: #eeeeee;  /* just slightly less jarring */

  padding: 2em;
  margin: 2em 0;

  clear: both;
}

section.highlight > .title {
  font-size: 1.3em;
  display: inline-block;
  width: 50%;
  font-weight: bold;
  margin-top: 0;
}

section.highlight aside {
  display: block;
  float: right;
  width: 40%;

  font-weight: 300;
  font-size: 0.9em;
}

section.highlight a.lp-watch {
  position: absolute;
  display: inline-block;

  background-image: url('images/tp/lp-2017-crop.png');
  background-repeat: no-repeat;
  background-position: middle left;

  /* accommodate background image */
  line-height: 75px;
  padding-left: 85px;  /* 75px + 10px margin between */

  left: 2em;
  bottom: 1em;

  font-size: 1.2em;
  color: white;

  clear: left;
}


.inline-img {
  text-align: center;
}

.avatar {
  display: block;

  border-radius: 5px;
  box-shadow: 1px 1px 3px #666f63;

  margin: auto;
}

.attribution {
  display: block;

  font-size: 0.75em;
  text-decoration: italic;
  text-align: right;

  width: 66%;
  margin-left: auto;
}


.page-flip {
  position: absolute;
  display:  block;

  top:    0px;
  right:  0px;
  width:  50px;
  height: 50px;
}


.affiliation-list ul {
  display: inline-block;
  text-align: center;
  padding: 0;
  margin: 0;
}
.affiliation-list ul > li {
  display: inline-block;
  margin: 1em;
}
.affiliation-list a {
  text-decoration: none;
}

.affiliation-list img:not(:hover) {
  transition: filter 3s;
  filter: grayscale(100%);
}
.affiliation-list img[src*=octoright] {
  transition: transform 0.5s;
}
.affiliation-list img[src*=octoright]:hover {
  transform: rotate(-20deg);
}

.hn-icon {
    display: inline-block;
    position: relative;

    background-color: #ff6600;

    width: 42px;
    height: 42px;
    top: -1em;

    font-size: 16px;
    font-weight: bold;
    text-align: center;
    line-height: 42px;
}
.hn-icon:not(:hover) {
  transition: background-color 3s;
  background-color: #888888;
}

.hn-icon,
a.hn-icon:visited,
a.hn-icon:active,
a.hn-icon:hover {
    color: white;
    text-decoration: none;
}

br.end {
  clear: both;
}

footer, footer h2 {
  font-weight: 300;
}
footer, #footer {
  font-size: 0.8em;
  text-align: center;

  background-color: #2e3436;
  color: #eeeeee;

  margin: 4em -4rem 0 -4rem;
  padding: 1em;

  clear: both;
}

#copyright {
  width: 80ch;
  margin: 1em auto 0em auto;
}

footer .site-nav {
  display: inline-block;
  margin: 0 auto 1em auto;
}
footer .site-nav > nav {
  text-align: left;
  float: left;
  margin: 0 2em;
}
footer .site-nav > nav > h2 {
  font-size: 1.2em;
  margin: 0;
  font-weight: bold;
}
footer .site-nav > nav > ul {
  display: inline-block;
  padding: 0 0 0 0.5em;
  margin: 0;
  text-align: left;
}
footer .site-nav > nav > ul > li {
  display: block;
}
footer .site-nav > nav > ul > li a {
  color: white;
  text-decoration: none;
}


.octoflop {
  /* make upright again (image is rotated 270deg) */
  transform: rotate(90deg);

  animation-duration: 2s;
  animation-delay: 2s;
  animation-name: octoflop;
  animation-fill-mode: forwards;
}

@keyframes octoflop {
  30% {
    transform: rotate(-35deg);
  }
  50% {
    transform: rotate(25deg);
  }
  65% {
    transform: rotate(-17deg);
  }
  75% {
    transform: rotate(10deg);
  }
  85% {
    transform: rotate(-5deg);
  }
  90% {
    transform: rotate(3deg);
  }
  95% {
    transform: rotate(-2deg);
  }
  100% {
    transform: rotate(0deg);
  }
}


/*** https://github.com/jgm/highlighting-kate/blob/master/css/hk-tango.css ***/
/* GNU GPLv2 */
/* Loosely based on pygment's tango colors */
/* Modified where indicated by Mike Gerwitz */
table.sourceCode, tr.sourceCode, td.sourceCode, table.sourceCode pre
{ margin: 0; padding: 0; border: 0; vertical-align: baseline; border: none; background-color: #f8f8f8 }
td.nums { text-align: right; padding-right: 5px; padding-left: 5px; background-color: #f0f0f0; }
td.sourceCode { padding-left: 5px; }
code.sourceCode { background-color: #f8f8f8; }
pre.sourceCode {
  /* modified by Mike Gerwitz */
  padding: 1em;
  margin: 0 -1em;

  background-color: #f8f8f8;
  line-height: 125%
}
td.nums pre { background-color: #f0f0f0; line-height: 125% }
code.sourceCode span.kw { color: #204a87; font-weight: bold } /* Keyword */
code.sourceCode span.dt { color: #204a87 } /* Keyword.Type */
code.sourceCode span.dv { color: #0000cf } /* Literal.Number.Integer */
code.sourceCode span.bn { color: #0000cf } /* Literal.Number.Hex */
code.sourceCode span.fl { color: #0000cf } /* Literal.Number.Float */
code.sourceCode span.ch { color: #4e9a06 } /* Literal.String.Char */
code.sourceCode span.st { color: #4e9a06 } /* Literal.String */
code.sourceCode span.co { color: #8f5902; font-style: italic } /* Comment */
code.sourceCode span.ot { color: #8f5902 } /* Comment.Preproc */
code.sourceCode span.al { color: #ef2929 } /* Generic.Error */
code.sourceCode span.fu { color: #000000 } /* Name.Function */
code.sourceCode span.re { }
code.sourceCode span.er { color: #a40000; border: 1px solid #ef2929 } /* Error */