/******* Fonts *******/

@font-face {
  font-family: "HP41X";
  src: url("fonts/HP41CharacterSetXtended.woff2") format("woff2"),
    url("fonts/HP41CharacterSetXtended.woff") format("woff");
}

/******* Desktop Styles *******/

@media screen {
  .content {
    column-gap: 2em;
    column-rule: 1px solid #cccccc;
  }
  body {
    font-size: 100%;
    line-height: 135%;
  }
  kbd.key,
  kbd.function,
  kbd.shift {
    border-style: solid;
    border-width: 2px;
    border-radius: 3px;
    padding: 0px 3px 0px 3px;
  }
  kbd.key {
    color: #333333;
    border-color: #333333;
  }
  kbd.function {
    color: #0099cc;
    border-color: #0099cc;
  }
  .shift {
    color: #ffcc33;
    border-color: #ffcc33;
  }
}

@media screen and (min-width: 800px) {
  .content {
    column-count: 2;
  }
}

@media screen and (min-width: 1200px) {
  .content {
    column-count: 3;
  }
}

/******* Print Styles *******/

/* Note: Safari does not support multicolumn printing */

@media print {
  @page {
    margin: 10mm 10mm 10mm 10mm;
  }
  .content {
    column-gap: 10mm;
  }
  body {
    font-size: 10pt;
    line-height: 12pt;
  }
  kbd.key,
  kbd.function,
  kbd.shift {
    border-style: solid;
    border-width: 1pt;
    border-radius: 2pt;
    padding: 0pt 3pt 0pt 3pt;
  }
  kbd.key {
    color: #333333;
    border-color: #333333;
  }
  kbd.function {
    color: #333333;
    border-color: #0099cc;
  }
  .shift {
    color: #ffcc33;
    border-color: #ffcc33;
  }
}

@media print and (orientation: portrait) {
  .content {
    column-count: 1;
  }
}

@media print and (orientation: landscape) {
  .content {
    column-count: 3;
  }
}

@media print {
  .no-print,
  .no-print * {
    display: none !important;
  }
}
/******* Header *******/

header {
  background-color: #333333;
  border-collapse: collapse;
  margin: 0;
  padding: 0;
}

.header tr {
  margin: 0;
  padding: 0;
}

.header td {
  margin: 0;
  padding: 0;
}

.sticky {
  position: fixed;
  top: 0;
  width: 100%;
}

/***** Navigation *****/

.topnav {
  overflow: hidden;
  background-color: #333333;
}

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 0.5em 0.5em;
  text-decoration: none;
  font-size: 100%;
  font-weight: 500;
}

.topnav a:first-child {
  padding-left: 1em;
}

.active {
  background-color: #4caf50;
  color: white;
}

.topnav .icon {
  display: none;
}

.topnav a:hover {
  background-color: #555;
  color: white;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {
    display: none;
  }
  .topnav a.icon {
    float: right;
    display: block;
  }
  .topnav.responsive {
    position: relative;
  }
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
  .topnav.responsive {
    float: none;
  }
  .topnav.responsive {
    position: relative;
  }
  .topnav.responsive {
    display: block;
    width: 100%;
    text-align: left;
  }
}

/******* Layout on home page (1 or 2 columns) *******/

.row {
  width: 100%;
  overflow: auto;
}

.column {
  display: block;
  width: 100%;
}

@media only screen and (min-width: 800px) {
  .column {
    float: left;
  }
  .left {
    width: 30%;
    margin-right: 2%;
  }
  .right {
    width: 68%;
    margin-right: 0;
  }
}

.banner {
  background-image: url(../images/hp41-modules.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-color: #000000;
  background-size: cover;
  width: 100%;
  height: 100%;
  display: flex;
  flex: 1;
}

/******* General *******/

body {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 300;
  margin: 0;
  padding: 0;
}

.main {
  margin: 1em;
}

.content {
  column-fill: balance;
}

h1,
h2 {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 500;
  line-height: 125%;
  clear: both;
}

h1 {
  font-size: 150%;
  color: #333333;
  column-span: all;
  margin-top: 2em;
}

h2 {
  font-size: 125%;
  color: #0099cc;
  break-after: avoid-column;
  margin-bottom: 0.25em;
}

p {
  text-align: justify;
  margin-top: 0.25em;
}

p:first-child {
  margin-top: 0;
}

h2:first-child {
  margin-top: 0;
}

.hp41chars {
  font-family: "HP41X";
}

.bluebold {
  color: #0099cc;
  font-weight: 500;
}

ul {
  margin-top: 0.25em;
  margin-bottom: 0.25em;
}

sub {
  vertical-align: text-bottom;
  position: relative;
  top: 0.4em;
  font-size: 70%;
}

.cbrace90 {
  color: #0099cc;
  font-size: 200%;
  font-weight: 400;
  writing-mode: vertical-rl;
}

.footer {
  color: #606060;
  border-top: 1px solid #a0a0a0;
  margin-top: 0.75em;
}

.lfooter {
  text-align: start;
  float: left;
  font-size: 80%;
}

.rfooter {
  text-align: end;
  font-size: 80%;
}

/******* Quick Reference Index *******/

table.index {
  border-collapse: collapse;
  break-after: column;
}

.index td {
  background-repeat: no-repeat;
  background-position: left center;
  vertical-align: top;
  padding: 0.5em 0 0.5em 2em;
}

.xfn-icon {
  background-image: url("../images/xfn.svg");
}

.time-icon {
  background-image: url("../images/time.svg");
}

.math-icon {
  background-image: url("../images/math.svg");
}

.connect-icon {
  background-image: url("../images/connect.svg");
}

.hpil-icon {
  background-image: url("../images/hpil.svg");
}

.plot-icon {
  background-image: url("../images/plot.svg");
}

.hepax-icon {
  background-image: url("../images/hepax.svg");
}

/******* Function Definitions *******/

/*
Notes:
- implemented using tables because of many display
  issues with definition lists.
- Firefox unfortunately does not break tables so we
  have to reset the layout.
*/

table.functions,
table.functions > tbody,
table.functions > tbody > tr {
  display: block;
}

table.functions td,
table.functions th {
  vertical-align: top;
  padding-top: 0.75em;
}

table.functions td {
  text-align: justify;
  padding-left: 1em;
}

table.functions th {
  text-align: left;
  width: 4em;
}

table.functions th.fullwidth {
  width: 100%;
}

kbd.key,
kbd.function,
kbd.shift {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 400;
  font-size: 90%;
  text-align: center;
}

kbd.shift {
  background: #ffcc33;
}

/******* Tables *******/

table {
  border-collapse: collapse;
  break-before: avoid-column;
}

table.center {
  margin-left: auto;
  margin-right: auto;
}

table.values {
  margin: 0.75em 0;
}

table.values td.left {
  text-align: left;
}

table.values td {
  text-align: right;
  padding: 0.25em 0.25em;
  border: 1px solid #333333;
}

/*******/

.keyboard {
  width: 100%;
}

table.keyboard td.indent {
  text-indent: -0.75em;
  padding-left: 2.5em;
}

table.keyboard td.nowrap {
  white-space: nowrap;
  padding-left: 2em;
}

table.keyboard td.nowrap2 {
  white-space: nowrap;
}

table.keyboard td {
  padding-top: 0.25em;
  text-align: left;
}

/*******/

.stack {
  margin-top: 1em;
}

table.stack caption {
  color: #0099cc;
  font-weight: 500;
  text-align: center;
  padding-left: 2.5em;
  padding-bottom: 0.25em;
}

table.stack td {
  padding: 0.25em 1em;
}

table.stack td.comment {
  padding: 0.25em 0.25em;
}

table.stack td.border {
  border: 2px solid #333333;
  text-align: center;
  width: 90%;
}

table.stack td.border2 {
  border: 2px solid #333333;
  text-align: center;
  white-space: nowrap;
}

.note {
  padding-top: 0.5em;
  text-align: left;
}

/*******/

.simple {
  border: 1px solid #333333;
  border-collapse: separate;
  margin: 0.5em 0;
}

table.simple td {
  padding: 0 0;
  text-align: right;
  vertical-align: middle;
}

/*******/

.flags {
  border-collapse: separate;
  margin: 0;
  padding: 0;
}

table.flags td,
table.flags th {
  padding: 0 0.5em;
  text-align: center;
  vertical-align: middle;
  width: auto;
}

table.flags td:last-child,
table.flags th:last-child {
  text-align: left;
}

.bcsize {
  border-collapse: separate;
  margin: 0;
  padding: 0;
}

table.bcsize td,
table.bcsize th {
  padding: 0;
  text-align: center;
  vertical-align: top;
  width: auto;
  max-width: 10em;
}

table.bcsize th {
  padding-top: 0.5em;
}

/*******/

.chars {
  border-collapse: collapse;
}

table.chars td,
table.chars th {
  border: 1px solid #333333;
  padding: 0.25em 0.75em;
}

table.chars td:nth-child(even),
table.chars th:nth-child(even) {
  border-left: 0;
}

table.chars td:nth-child(odd),
table.chars th:nth-child(odd) {
  border-right: 0;
}

table.chars td:nth-child(odd) {
  text-align: center;
}

table.chars td:nth-child(even) {
  text-align: right;
}

/*******/

.standard {
  border-collapse: collapse;
  border: 1px solid #333333;
  width: 100%;
  margin: 1em 0;
}

table.standard caption {
  color: #333333;
  padding: 0.5em 1em;
  font-weight: 500;
  font-size: 110%;
}

table.standard td {
  border: 2px solid #333333;
  padding: 0.5em 0.75em;
}

.params {
  border-collapse: collapse;
  border: 2px solid #0099cc;
  width: 100%;
  margin: 1em 0;
}

table.params > thead > tr {
  border: 2px solid #0099cc;
}

table.params > thead > tr > th {
  padding: 0.2em 0.5em;
  text-align: center;
}

table.params > thead > tr > th.lb {
  padding: 0.2em 0.5em;
  text-align: center;
  border-left: 2px solid #0099cc;
}

table.params > tbody > tr > td {
  padding: 0.2em 0.5em;
  text-align: center;
}

table.params > tbody > tr > td.lb {
  padding: 0.2em 0.5em;
  text-align: center;
  border-left: 2px solid #0099cc;
}

table.params > tbody > tr > td.left {
  padding: 0.2em 0.5em;
  text-align: left;
  white-space: nowrap;
}

/******* Images *******/

.img-left {
  float: right;
  margin: 0px 0px 10px 10px;
}

@media (hover: hover) and (pointer: fine) {
  /* don't use hover on touch devices */
  .zoom {
    transition: transform 0.5s;
    -moz-transition: transform 0.5s;
    -webkit-transition: transform 0.5s;
    -o-transition: transform 0.5s;
    -ms-transition: transform 0.5s;
  }
  .zoom:hover {
    cursor: zoom-in;
    cursor: -moz-zoom-in;
    cursor: -webkit-zoom-in;
    transform: scale(4, 4);
    -moz-transform: scale(4, 4);
    -webkit-transform: scale(4, 4);
    -o-transform: scale(4, 4);
    -ms-transform: scale(4, 4);
  }
}