@import url("../vendor/fontawesome/css/all.css");

/**********************/
/* Variables
/**********************/

:root {
  color-scheme: light dark;
  accent-color: var(--primary-color);
}

html {
  --details-background-color: rgba(0, 0, 0, 0.03);
  --summary-background-color: rgba(0, 0, 0, 0.05);
  --summary-hover-color: rgba(0, 0, 0, 0.4);
}

html.dark {
  --details-background-color: rgba(255, 255, 255, 0.03);
  --summary-background-color: rgba(255, 255, 255, 0.05);
  --summary-hover-color: rgba(255, 255, 255, 0.4);
}

/**********************/
/* PAGE HEADER
/**********************/

button:hover {
  cursor: pointer;
}

div.column {
  display: inline-block;
  vertical-align: top;
  width: 50%;
}

div.css-columns {
  column-count: 2;
  column-gap: var(--margin-columns);
  column-rule-style: none;
}

div.box {
  break-inside: avoid-column;
}

div.multi-column-row {
  display: flex;
  flex-flow: row nowrap;
  margin-bottom: var(--margin-bottom-columns);
}

div.multi-column-row div.column {
  position: relative;
  flex: 1 1 0;
  margin-left: var(--margin-columns);
  margin-right: var(--margin-columns);
}

div.multi-column-row div.column:first-child {
  margin-left: 0;
  margin-right: var(--margin-columns);
}

div.multi-column-row div.column:last-child {
  margin-left: var(--margin-columns);
  margin-right: 0;
}

div.multi-column-row div.column .mid {
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
}

div.multi-column-row div.column[data-grow="1"] {
  flex-grow: 1;
}

div.multi-column-row div.column[data-grow="2"] {
  flex-grow: 2;
}

div.multi-column-row div.column[data-grow="3"] {
  flex-grow: 3;
}

div.multi-column-row div.column[data-grow="4"] {
  flex-grow: 4;
}

div.multi-column-row div.column[data-grow="5"] {
  flex-grow: 5;
}

div.multi-column-row div.column[data-grow="6"] {
  flex-grow: 6;
}

div.multi-column-row div.column[data-grow="7"] {
  flex-grow: 7;
}

div.multi-column-row div.column[data-grow="8"] {
  flex-grow: 8;
}

div.multi-column-row div.column[data-grow="9"] {
  flex-grow: 9;
}

div.single-column-row {
  margin-bottom: var(--margin-bottom-columns);
}

/*
 *Required CSS for the new media filters. Adopted to Mario's semantic with
 *further fine-tuning
 */
div.decker.image.error {
  font-size: 20pt;
  background-color: #fee;
  border: 0.1em solid darkred;
  padding: 1em;
}

div.decker.image.error .message {
  font-style: italic;
  margin-left: 20px;
}

div.decker.image.error pre.markup {
  width: 100%;
  margin-left: 20px;
}

div.decker.image.error pre.markup code.markup {
  font-family: "Source Code Pro", monospace;
  font-size: 18pt;
  line-height: 1.4;
  color: black;
}

img.decker,
video.decker {
  display: inline-block;
  /* remove the following two lines to get sizing of 
       * rendered code block sizing working */
  /*width: auto;*/
  /*height: auto;*/
  object-fit: contain;
  max-width: 100%;
  max-height: 100%;
  vertical-align: middle;
  margin: auto;
  border: 0px;
  box-shadow: none;
}

iframe.decker {
  border: 1px solid lightgray;
  outline: none;
  overflow: hidden;
  max-width: 100%;
  max-height: 100%;
  vertical-align: middle;
}

figure.decker,
div.nofigure {
  display: inline-block;
}

figure.decker > img.decker,
figure.decker > video.decker,
figure.decker > iframe.decker,
div.nofigure > img.decker,
div.nofigure > video.decker,
div.nofigure > iframe.decker {
  margin: auto;
  border: 0px;
  box-shadow: none;
  max-width: 100%;
  max-height: 100%;
}

div.decker.nofigure {
  width: 100%;
}

figure.streaming {
  width: 100%;
  margin: 0;
}

figure.decker figcaption.decker {
  margin: 0px 0px 0px 0px;
  line-height: 1.2;
  font-style: italic;
  text-align: center;
}

object.decker {
  max-width: 100%;
  max-height: 100%;
}

figure.decker > object.decker {
  width: 100%;
}

div.image-row {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  width: 100%;
}

div.image-row div {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: auto;
}

div.image-row img {
  display: block;
}

h2 {
  font-size: 1.25em;
}

h4,
h5,
h6 {
  font-size: 1em;
}

header nav {
  margin-bottom: 0.5rem;
}

header {
  background: var(--background-alt);
  border-bottom: 1px solid var(--border);
  padding: 2rem 1.5rem;
  /* This sets the right and left margins to cancel out the body's margins. It's width is still the same, but the background stretches across the page's width. */
  margin: auto;
}

header h1 {
  margin-bottom: 0;
}

header h2 {
  margin-top: 0;
  color: var(--muted);
}

header h1,
header h2,
header h3 {
  padding-bottom: 0;
  border-bottom: 0;
}

header > *:first-child {
  margin-top: 0;
  padding-top: 0;
}

header > *:last-child {
  margin-bottom: 0;
}

div.anchor details {
  margin-bottom: 1em;
}

div.anchor summary {
  font-size: 1.2;
  font-weight: bold;
  font-style: italic;
}

button {
  cursor: pointer;
}

/**********************/
/* HEADER
/**********************/

header {
  margin: 0 0 2rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  background: var(--primary-color);
  padding: 2rem 0;
  width: 100%;
}

header > h1,
header > h2 {
  color: white;
  line-height: 1.5;
  margin: auto;
}

header > h1 {
  font-size: 3.5rem;
  margin-bottom: 0;
}

header > h2 {
  font-size: 2.5rem;
  margin-top: 0;
  font-style: italic;
}

header nav {
  margin-bottom: 0.5rem;
}

/* old stuff */

h1 {
  font-size: 1.5em;
  margin-top: 3rem;
}

hr {
  margin-top: 2rem;
}

details input {
  box-sizing: border-box;
  width: 100%;
}

/********************************/
/*       Actual content         */
/********************************/

html {
  width: 100%;
  height: 100vh;
  position: relative;
}

body {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;

  background: var(--background-color);
  color: var(--foreground-color);

  counter-reset: sctr;
  text-align: justify;

  margin: auto;
  width: 100%;
  height: 100%;

  /* this is needed because tables with MathJax
  overflow a lot */
  max-width: 100%;
  overflow-x: auto;

  print-color-adjust: exact;
  -webkit-print-color-adjust: exact; /* From old page.css */
  line-height: 1.4; /* It is said 1.5 improves readability */
}

body.page {
  max-width: 100%;
}

main {
  flex-grow: 1;
  padding-top: 1rem;
  width: 50rem;
  max-width: min(50rem, 95%);
  margin: auto;
  box-sizing: border-box;
}

footer {
  inset: 0;
  border-top: 1px solid var(--shade4);
  font-style: italic;
  font-size: 1rem;
  margin: 2rem 0 0 0;
}

footer p {
  display: inline-block;
  width: 100%;
  margin: 0;
  padding-block: 0.5em;
  line-height: 2em;
  text-align: center;
  box-sizing: border-box;
}

@media only screen and (max-width: 600px) {
  main {
    width: 100%;
    box-sizing: border-box;
    padding: 1rem;
  }
}

.todo {
  color: var(--redish);
}

/********************************/
/* Details / Summary Boxes      */
/********************************/

details {
  box-sizing: border-box;
  margin-top: 20px;
  padding: 1em;
  padding-bottom: 0;
  border-radius: 10px;
  background: var(--details-background-color);
}
details[open] {
  padding-bottom: 1em;
}

details summary {
  box-sizing: border-box;
  width: auto;
  margin-left: -1em;
  margin-right: -1em;
  margin-top: -1em;
  margin-bottom: 0;
  padding: 4px;
  padding-left: 0.5rem;
  border-radius: 8px;
  background: var(--summary-background-color);
  border: none;
  outline: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: normal;
}

details[open] > summary {
  margin-bottom: 1em;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

details summary:hover {
  background-color: var(--summary-hover-color);
  color: var(--background-color);
}

details input {
  box-sizing: border-box;
  width: 100%;
}

/********************************/
/* Colored Boxes                */
/********************************/

:is(.definition, .example, .axiom, .theorem) {
  box-sizing: border-box;
  width: 95%;
  padding: 1.5em;
  padding-right: 2.5em;
  margin: 30px auto;
  border: none;
  border-left: 5px solid var(--foreground-color);
  border-radius: 5px;
}

.example {
  border-color: var(--shade3);
  background: var(--shade1);
}

.definition {
  border-color: var(--accent5);
  background: var(--accent5-bbg);
}

.axiom {
  border-color: var(--accent0);
  background: var(--accent0-bbg);
}

.theorem {
  border-color: var(--accent1);
  background: var(--accent1-bbg);
}

.theorem.hidden {
  display: none;
}

/********************************/
/* Colored Demo Boxes           */
/********************************/

details.demo {
  --summary-hover-color: var(--accent3);
  box-sizing: border-box;
  width: 95%;
  padding: 1.5em;
  padding-bottom: 0;
  margin: 30px auto;
  border: none;
  border-left: 5px solid var(--accent3);
  border-radius: 5px;
  background: var(--accent3-bbg);
}

details[open].demo {
  padding-bottom: 1em;
}

details.demo summary {
  margin-left: -1.5em;
  margin-right: -1.5em;
  margin-top: -1.5em;
  width: auto;
  padding-left: 1em;
  border-radius: 5px;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  background: none;
}

details[open].demo summary {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  background-color: var(--accent3);
  color: white;
}

details.demo summary:hover {
  background-color: var(--accent3);
  color: white;
}

/* links */

a {
  color: var(--accent5-fg);
  text-decoration: none;
}

a:hover {
  text-shadow: none;
  text-decoration: underline;
  border: none;
}

.qed {
  display: block;
  text-align: right;
}

.qed2 {
  float: right;
}

.theorem details summary:hover {
  background: rgba(1, 1, 1, 0.1);
}

.example details summary:hover {
  background: rgba(1, 1, 1, 0.1);
}

.theorem details summary::after {
  content: none;
}

.example details summary::after {
  content: none;
}

details summary[icon]::marker {
  display: inline;
  font-style: normal;
  font-variant: normal;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  font-family: "Font Awesome 7 Free";
  font-weight: 900;
  color: var(--primary-color);
  content: attr(icon);
}
details summary[icon]:hover::marker {
  color: white;
}

img {
  padding: 1em;
  margin: auto;
  object-fit: contain;
}

:is(.theorem, .example) mjx-tool > mjx-tip {
  background-color: var(--background-color);
  /*  border-radius: 0.5rem; */
  padding: 0.7em;
  font-size: 1em;
  color: var(--foreground-color);
}

h1 {
  font-size: 2rem;
  margin-top: 2em;
  margin-bottom: 0.7em;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2em;
  margin-bottom: 0.7em;
}

h3 {
  font-size: 1.25rem;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

p {
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.center {
  display: block;
  width: 100%;
  margin: auto;
}

figure.image {
  margin: auto;
}

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

.force-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

:is(.definition, .example, .axiom, .theorem) ol > li {
  padding-left: 0.5em;
}
:is(.definition, .example, .axiom, .theorem) ol > li::marker {
  font-weight: bold;
}

.lowerabcli ol {
  list-style-type: lower-alpha !important;
}

.noneli ul {
  list-style-type: none;
}

li {
  margin-bottom: 0.3em;
}

/*-----------------------Print-Options---------------------------------------*/

@media print {
  .chapter {
    page-break-before: always;
  } /* page-break-after works, as well */
  .theorem,
  .axiom,
  .definition,
  .example {
    break-inside: avoid;
  }
  body {
    background-color: white;
  }
  summary {
    width: 90%;
  }

  /* avoid too fat font when exporting PDF */
  mjx-container[jax="SVG"] :is(use[data-c], path[data-c]) {
    stroke-width: 0 !important;
  }
}

/*********************************************
 * TABLES
 *********************************************/

table {
  display: table;
  width: unset;
  margin: auto;
  border-collapse: collapse;
  border-spacing: 2px;
  border-top: 2px solid var(--foreground-color);
  border-bottom: 2px solid var(--foreground-color);
  text-align: center;
  margin-bottom: 1em;
  line-height: 1.5em;
  width: fit-content;
}

table {
  display: table;
  margin: auto;
  border-collapse: collapse;
  border-spacing: 2px;
  border-top: 2px solid var(--foreground-color);
  border-bottom: 2px solid var(--foreground-color);
  text-align: center;
  margin-bottom: 1em;
  line-height: 1.5em;
  width: fit-content;
  max-width: 100%;
  overflow-x: scroll;
  box-sizing: border-box;
}

table caption {
  margin: 10px 0px 0px 0px;
  line-height: 1.2;
  font-style: italic;
  font-size: 0.8em;
  text-align: center;
  caption-side: bottom;
}

table th {
  font-weight: bold;
}

table th {
  border-bottom: 1px solid;
}

table th,
table td {
  text-align: left;
  padding: 0.2em 1em 0.2em 1em;
}

table th[align="center"],
table td[align="center"] {
  text-align: center;
}

table th[align="right"],
table td[align="right"] {
  text-align: right;
}

table tbody tr:last-child th,
table tbody tr:last-child td {
  border-bottom: none;
}

td[align="center"] {
  text-align: center;
}

td[align="right"] {
  text-align: right;
}

td[align="left"] {
  text-align: left;
}

/*********************************************
 * Milchglas für Ladebildschirm und Menu
 *********************************************/

.glass {
  display: none;
  z-index: 4;
  background: rgba(0, 0, 0, 0.8);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 100vw;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.glass.show {
  display: block;
}

/*********************************************
 * Ladebildschirm
 *********************************************/

#waiting-screen {
  display: none;
  line-height: 1.5;
  color: #ddd;
  font-size: 2.5rem;
}
.waiting #waiting-screen {
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
  justify-content: center;
}

#waiting-quote {
  max-width: 80%;
}

#waiting-quote-text {
  color: inherit;
  font-weight: bold;
  margin: 0.5em;
  text-align: left;
}

#waiting-quote-author {
  color: inherit;
  margin-top: 0.5em;
  text-align: right;
  font-style: italic;
}

/**********************************/
/*         Old page.css           */
/**********************************/

div.column {
  display: inline-block;
  vertical-align: top;
  width: 50%;
}

div.css-columns {
  column-count: 2;
  column-gap: var(--margin-columns);
  column-rule-style: none;
}

div.box {
  break-inside: avoid-column;
}

div.multi-column-row {
  display: flex;
  flex-flow: row nowrap;
  margin-bottom: var(--margin-bottom-columns);
}

div.multi-column-row div.column {
  position: relative;
  flex: 1 1 0;
  margin-left: var(--margin-columns);
  margin-right: var(--margin-columns);
}

div.multi-column-row div.column:first-child {
  margin-left: 0;
  margin-right: var(--margin-columns);
}

div.multi-column-row div.column:last-child {
  margin-left: var(--margin-columns);
  margin-right: 0;
}

div.multi-column-row div.column .mid {
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
}

div.multi-column-row div.column[data-grow="1"] {
  flex-grow: 1;
}

div.multi-column-row div.column[data-grow="2"] {
  flex-grow: 2;
}

div.multi-column-row div.column[data-grow="3"] {
  flex-grow: 3;
}

div.multi-column-row div.column[data-grow="4"] {
  flex-grow: 4;
}

div.multi-column-row div.column[data-grow="5"] {
  flex-grow: 5;
}

div.multi-column-row div.column[data-grow="6"] {
  flex-grow: 6;
}

div.multi-column-row div.column[data-grow="7"] {
  flex-grow: 7;
}

div.multi-column-row div.column[data-grow="8"] {
  flex-grow: 8;
}

div.multi-column-row div.column[data-grow="9"] {
  flex-grow: 9;
}

div.single-column-row {
  margin-bottom: var(--margin-bottom-columns);
}

/*
 *Required CSS for the new media filters. Adopted to Mario's semantic with
 *further fine-tuning
 */
div.decker.image.error {
  font-size: 20pt;
  background-color: #fee;
  border: 0.1em solid darkred;
  padding: 1em;
}

div.decker.image.error .message {
  font-style: italic;
  margin-left: 20px;
}

div.decker.image.error pre.markup {
  width: 100%;
  margin-left: 20px;
}

div.decker.image.error pre.markup code.markup {
  font-family: "Source Code Pro", monospace;
  font-size: 18pt;
  line-height: 1.4;
  color: black;
}

img.decker,
video.decker {
  display: inline-block;
  /* remove the following two lines to get sizing of 
       * rendered code block sizing working */
  /*width: auto;*/
  /*height: auto;*/
  object-fit: contain;
  max-width: 100%;
  max-height: 100%;
  vertical-align: middle;
  margin: auto;
  border: 0px;
  box-shadow: none;
}

iframe.decker {
  border: 1px solid lightgray;
  outline: none;
  overflow: hidden;
  max-width: 100%;
  max-height: 100%;
  vertical-align: middle;
}

figure.decker,
div.nofigure {
  display: inline-block;
}

figure.decker > img.decker,
figure.decker > video.decker,
figure.decker > iframe.decker,
div.nofigure > img.decker,
div.nofigure > video.decker,
div.nofigure > iframe.decker {
  margin: auto;
  border: 0px;
  box-shadow: none;
  max-width: 100%;
  max-height: 100%;
}

div.decker.nofigure {
  width: 100%;
}

figure.streaming {
  width: 100%;
  margin: 0;
}

figure > figcaption {
  margin: 0.5em auto;
  font-style: italic;
  text-align: center;
}

figure.decker figcaption.decker {
  margin: 0px 0px 0px 0px;
  line-height: 1.2;
  font-style: italic;
  text-align: center;
}

object.decker {
  max-width: 100%;
  max-height: 100%;
}

figure.decker > object.decker {
  width: 100%;
}

div.image-row {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  width: 100%;
}

div.image-row div {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: auto;
}

div.image-row img {
  display: block;
}

details {
  margin-bottom: 1em;
}

div.anchor summary {
  text-align: left;
  font-weight: normal;
  font-style: normal;
}

/****** MARIO HACK(S) ******/

figure {
  margin: auto;
  border: none;
  object-fit: contain;
}

div.media > figure,
div.media > figure iframe {
  padding: 0;
  border: 0;
  text-align: center;
  border-radius: 5px;
}

figure > img {
  margin: auto;
}

progress {
  accent-color: initial;
  margin: auto 0.5em;
  width: 3em;
}

/*********************************************
* special rules for dark mode
*********************************************/

html.light .dark-only,
html.dark .light-only {
  display: none;
}

html.dark
  .media
  :is(figure, .figure)
  :is(svg, img, div.chart-container, iframe) {
  background-color: white;
  filter: brightness(90%) contrast(90%);
}

@media (prefers-color-scheme: dark) {
  img {
    background: var(--shade5);
    border-radius: 0.5rem;
  }

  .light img {
    background: inherit;
  }
}

@media (prefers-color-scheme: light) {
  .dark img {
    background: var(--shade5);
    border-radius: 0.5rem;
  }
}

#page-color-button {
  font-size: var(--icon-size);
  font-family: "Font Awesome 7 Free";
  font-weight: 900;
  position: absolute;
  top: 0.5em;
  right: 0.5em;
  width: 2em;
  height: 2em;
  border: none;
  border-radius: 999px;
  transition: background-color 0.1s;
  color: var(--foreground-color);
  background-color: transparent;

  &:hover,
  &:focus {
    color: var(--icon-hover-color);
    background-color: var(--background-color);
  }
}

html.dark #page-color-button::before {
  content: "\f185";
}
html.light #page-color-button::before {
  content: "\f186";
}

/* make focus more visible */
a,
button,
input,
select,
summary {
  transition: outline-offset 0.1s ease !important;
  outline-offset: 30px;
  &:focus-visible {
    outline: solid 3px var(--focus-color) !important;
    outline-offset: -1px !important;
  }
  &:active {
    outline-offset: -3px !important;
  }
}
