style.css

@font-face {
  font-family: APL;
  src: local("APL385 Unicode"), url("assets/apl385.ttf");
}
@font-face {
  font-family: sans;
  font-weight: normal;
  src: local("Nunito SemiBold"), url("assets/Nunito-SemiBold.ttf");
}
@font-face {
  font-family: sans;
  font-weight: bold;
  src: local("Nunito"), url("assets/Nunito-Bold.ttf");
}
@font-face {
  font-family: sans;
  font-style: italic;
  src: local("Nunito SemiBold"), url("assets/Nunito-SemiBoldItalic.ttf");
}
@font-face {
  font-family: sans;
  font-weight: bold;
  font-style: italic;
  src: local("Nunito"), url("assets/Nunito-BoldItalic.ttf");
}

html {
  --main-col:   165, 76,206;
  --main-light: 186, 99,208;
  --main-dark:  127,  0,185;
  --sec-dark:   127,  0,127;
  --sec-light:  255,  0,255;
  --g7:         119,119,119;
  --g8:         136,136,136;
  --g9:         153,153,153;
  --gf:         254,254,254;
  --weak:       119,119,255;
  --mid:        204,119,255;
}

body {
  font-family: sans, sans-serif;
}

button {
  cursor: pointer;
}

kbd.l, pre, code, .apl, #session, #primerGlyphs input, .ngn_lb b {
  font-family: APL, monospace;
}
kbd.l, pre, code, .apl, #session, #primerGlyphs input {
  white-space: pre;
}

pre.apl, code.apl, code.language-APL, #primer code, #primerGlyphs input {
  cursor: pointer;
  color: rgb(var(--sec-dark));
}

.b pre.apl, .b code.apl, .b code.language-APL, .b #primer code, .b #primerGlyphs input {
  color: rgb(var(--sec-light));
}

body {
  margin: 0;
  overflow: hidden;
  /* background: rgb(var(--main-col)); */
}

.b body {
	background: #000;
}

.inURL {
  width: 100%;
}

.b #leftPane, .b #rightPane, .b .inURL {
  color: #fff;
  background: #000;
}

#replBar {
	padding-top: 1px;
	background: rgb(var(--main-col));
	width: 100%;
	color: #fff;
}

#oneLineInput {
	font-family: apl;
	font-size: 1em;
}

h1 {
  font-size: 1.73em;
}

h2 {
  font-size: 1.44em;
}

h3 {
  font-size: 1.2em;
}

h4 {
  font-size: 1em;
}

h5 {
  font-size: 0.83em;
}

h6 {
  font-size: 0.69em;
}

h1,h2,h3,h4,h5,h6{
  font-weight: bold;
  margin-block-start: 1.5ex;
  margin-block-end: 0.5ex;  
}

kbd{
  padding: 0 4px;
  border-radius: 4px;
  background: rgba(var(--g8),0.5);
  margin: 1px;
  white-space: nowrap;
  font-family: inherit;
}

kbd.l{
  padding: 2px 6px;
}

hr {
  border: 0;
  height: 0.1ex;
  background: rgb(var(--main-col));
  opacity: 0.5;
  margin: 3px;
}

table {
  border-collapse: collapse;
}
td{
  padding: 0;
  vertical-align: top;
}

.hidden {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: -1000em;
}

.split,
.gutter.gutter-horizontal {
  float: left;
}

.gutter.gutter-horizontal {
  cursor: ew-resize;
  background: rgb(var(--main-col));
  height: 100vh;
  color: #fff;
}

.content {
  padding: 1ex 1em;
  overflow: hidden auto;
  display: none;
  height: calc(100vh - 3em);
}

.content.active {
  display: block;
}

.grid.active {
  display: grid;
}

.tablink {
  border: none;
  background: unset;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  text-transform: uppercase;
  color: #fff;
  width: 20%;
  font-size: 100%;
  overflow: hidden;
  font-family: unset;
  text-overflow: ellipsis;
  padding: 6px 2px;
  margin: 1px;
  margin-bottom: 0;
}

.tablink.active {
  cursor: unset;
  border-color: #fff;
}

#leftPane, #rightPane {
	background: #fff;
}

#rightPane {
	display: flex;
	flex-direction: column;
}

#leftPane {
  overflow-y: auto;
  z-index: -2;  
}

#tabs {
  height: 2em;
  overflow: hidden;
  display: flex;
  background: rgb(var(--main-col));
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

#lbInfo {
	padding-left: 1.5em;
	line-height: 1.5em;
}

.hiTable, .creditsTable {
  margin: 1ex 0;
  line-height: 1.5;
}

.hiTable {
  width: 100%
}

.hiTable td:first-child {
  white-space: pre;
  padding-right: 1em;
}

.inURL {
  width: calc(100% - 4em);
  /*height: calc(2.25em - 2px);*/
  padding: 0 0.5em;
  vertical-align: middle;
  border: 1px solid rgb(var(--g7));
}

#lessonList a{
  display: table;
  margin-bottom: 1ex;
  text-indent: -3ex;
  padding-left: 3ex;
}

.run {
  height: 2.25em;
  background: rgb(var(--main-col));
  border: 1px solid rgb(var(--main-col));
  color: #fff;
  width: 2.75em;
  padding: 5px 0;
  text-transform: uppercase;
  fill: #fff;
  vertical-align: middle;
  font-size: 1em;
}

#lessonList a {
  color: unset;
  text-decoration: blue underline;
  cursor: pointer;
}
.b #lessonList a {
  text-decoration-color: #77f;
}

#learn.grid.active {
  display: flex;
  flex-direction: column;
}

.urlInputGroup {
  display: flex;
  margin-bottom: 0;
}

.errorDiv{
  text-align: center;
  margin-bottom: -1em;
}

.errorSpan {
  visibility: hidden;
  opacity: 0;
  transition: all 150ms;
  transform-origin: center;
  font-size: 1.2em;
  padding: 0 1ex;
  color: #fff;
  background: rgb(var(--main-col));
  border-radius: 0 0 12px 12px;
}

.errorSpan svg {
	font-size: 85%
}

@keyframes errorScale {
    0% {opacity: 1}
   80% {opacity: 1}
  100% {opacity: 0}
}

.errorSpan.animate {
  animation: errorScale 3s;
}

#learnButtons {
  overflow: hidden;
  white-space: nowrap;
  background: rgb(var(--main-col));
  width: calc(100% + 2em);
  text-align: center;
  margin-left: -1em;
  fill: #fff;
  color: #fff;
  position: relative;
  flex: 2;
  max-height: 100px;
}

#learnButtons button {
  height: 2.25em;
  width: 3em;
  font-size: larger;
  padding-bottom: 0.5em;
  background: unset;
  border: none;
  color: #fff;
  margin-bottom: -10px;
  padding-top: 6px
}

.flip{
  transform: scaleX(-1);
}

#lessonFN {
  margin-top: 8px;
  margin-bottom: 4px
}

#mdrender {
  display: none;
  overflow: hidden scroll;
  padding: 1ex 1em 0 1em;
  position: relative;
  flex: 1;
}

#mdrender>* {
  padding: 0;
}

#mdrender>*:last-child {
  padding-bottom: 3ex;
}

#mdrender img{
  float: unset;
}

#linkIcon{
  color: rgb(var(--main-col));
  position: absolute;
  right: 1.2em;	
  cursor: pointer;
  filter: drop-shadow( 1px  1px 1px #fff)
          drop-shadow(-1px -1px 1px #fff)
          drop-shadow( 1px -1px 1px #fff)
          drop-shadow(-1px  1px 1px #fff);
}
.b #linkIcon {
  filter: drop-shadow( 1px  1px 1px #000)
          drop-shadow(-1px -1px 1px #000)
          drop-shadow( 1px -1px 1px #000)
          drop-shadow(-1px  1px 1px #000);
  color: #f0f;
}

#session {
  /* width: calc(100% - 1em); */
	flex-grow: 2;
  border: none;
  resize: none;
  padding: 0.2em 0.2em 0.2em 0.8em;
  color: inherit;
  background: inherit;
	overflow-y: scroll;
}

#aplInputGroup {
	margin: 10px 0 10px 0;
}

.b a {
  color: rgb(var(--weak));
}
.b a:visited {
  color: rgb(var(--mid));
}

#intro code.apl, #learn code.apl{
  padding-left: 3ex;
}

#primerGlyphs input {
  background: unset;
  border: none;
  font-size: 1.2em;
  padding: 0 0.1em;
}

.creditsTable td:nth-child(2) {
  font-weight: bold;
  padding-left: 1em;
}

#full {
  position: relative;
  top: calc(50% - 70px);
  padding: 16px 3px 12.5px 1px;
  background: rgb(var(--main-col));
  border-radius: 0 16px 16px 0;
  cursor: pointer;
  display: inline-block;
  left: 10px;
  color: #fff;
  fill: #fff;
}

#triangle.flip {
  transform: scaleX(-1);
}
/* temporary effects */

.gutter:hover,
#full:hover,
.tablink:hover, .tablink:focus,
#learnButtons button:hover,
.run:hover
{
  background: rgb(var(--main-dark));
}

.inURL:hover, .inURL:focus {
  border-color: rgb(var(--main-dark));  
}

/* language bar */

.ngn_lb{
  background: rgb(var(--main-col));
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  border-bottom: 1px solid rgb(var(--main-col));
  color: #fff;
  padding: 2px;
  word-wrap: break-word;
  user-select: none;
  z-index: -1;
}

.ngn_lb b {
  cursor: pointer;
  padding: 0 2px;
  font-weight: normal;
  text-decoration: none;
  font-size: 1.2em;
}

.ngn_lb b:hover,
.ngn_bq .ngn_lb {
  background: rgb(var(--main-dark));
  color: #fff;
  box-shadow: unset;
}

.ngn_x,
.help,
.ngn_o {
  float: right;
  color: rgb(var(--g9));
  cursor: pointer;
}

.ngn_x {
  margin-top: -3px;
}

.ngn_x:hover {
  color: #f00;
}

.ngn_lb .help {
  margin: -4px 1px;
}

.minibar {
  position: fixed;
  right: -2px;
  top: -2px;
  background: #eee;
  border: 2px solid #ddd;
  padding: 0 3px;
  cursor: pointer;
  color: rgb(var(--g9));
  user-select: none;
}

.minibar {
  margin-top: -1px;
}

.ngn_o:hover {
  color: #0f0;
}

 /* The Modal (confirmLoadWS) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(127,127,127); /* Fallback color */
  background-color: rgba(127,127,127,0.4); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
  background: #fff;
  margin: 15% auto; /* 15% from the top and centered */
  padding: 20px;
  border: 10px solid rgb(var(--main-dark));
  width: 80%; /* Could be more or less, depending on screen size */
}

.b .modal-content {
  background: #000;
  color: #fff
}

/* The Close Button */
.close {
  float: right;
  font-size: 28px;
  font-weight: bold;
  margin-top: -12px;
}

.close:hover,
.close:focus {
  color: rgb(var(--main-col));
  text-decoration: none;
  cursor: pointer;
}