/* Derived from the MIT-licensed https://github.com/kevquirk/simple.css */

/* Global variables. */
:root {
  /* Set sans-serif & mono fonts */
  --sans-font: -apple-system, BlinkMacSystemFont, 'Avenir Next', Avenir, 'Nimbus Sans L', Roboto,
    'Noto Sans', 'Segoe UI', Arial, Helvetica, 'Helvetica Neue', sans-serif;
  --mono-font: Consolas, Menlo, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;

  /* Default (light) theme */
  --bg: #fff;
  --accent-bg: #f5f7ff;
  --text: #212121;
  --text-light: #585858;
  --border: #d8dae1;
  --accent: #0d47a1;
  --accent-danger: #a10d47;
  --logo-light: #bfdff7;
  --logo: #2a94e3;
  --logo-danger: #e32a94;
  --code: #d81b60;
  --preformatted: #444;
  --marked: #ffdd33;
  --disabled: #efefef;
  --validation-error: #ff0000;

  --toc-desktop-max-width: 17rem;
  --toc-padding: 2rem;
  --toc-li-hover-color: var(--accent);
  --toc-active-bg: var(--logo-light);
  --toc-active-color: var(--text);
  --toc-max-height: calc(90vh);
}

/* svelte-toc hack */
aside.toc.desktop {
  border: none;
  margin-top: 27.5rem;
}

.bg-b {
  background-color: black;
  color: red;
  font-weight: bold;
  font-size: 1.5rem;
}
.bg-o {
  background-color: orange;
  font-weight: bold;
  font-size: 1.5rem;
}
.bg-y {
  background-color: yellow;
  font-weight: bold;
}

/* Reset box-sizing */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Reset default appearance */
textarea,
select,
input,
progress {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

html {
  /* Set the font globally */
  font-family: var(--sans-font);
  scroll-behavior: smooth;
}

/* Make the body a nice central block */
body {
  color: var(--text);
  background-color: var(--bg);
  font-size: 1.15rem;
  line-height: 1.5;
  margin: 0;
}
body {
  display: grid;
  grid-template-columns: 1fr min(45rem, 90%) 1fr;
}
body > div > #middle {
  grid-column: 2;
}

/* Make the header bg full width, but the content inline with body */
body > div > #middle > header {
  text-align: center;
  padding: 0 0.5rem 0 0.5rem;
  grid-column: 1 / -1;
}

main > header {
  text-align: center;
  margin-bottom: 2.5rem;
}

main > header h1 {
  margin-bottom: 1rem;
}

main > header p {
  max-width: 40rem;
  margin: 1rem auto 2rem auto;
}

/* Add a little padding to ensure spacing is correct between content and header > nav */
main {
  padding-top: 1.5rem;
}

body > div > #middle > footer {
  margin-top: 4rem;
  padding: 2rem 1rem 1.5rem 1rem;
  color: var(--text-light);
  font-size: 0.9rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

/* Format headers */
h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.6rem;
  margin-top: 3rem;
}

h3 {
  font-size: 2rem;
  margin-top: 3rem;
}

h4 {
  font-size: 1.44rem;
}

h5 {
  font-size: 1.15rem;
}

h6 {
  font-size: 0.96rem;
}

/* Prevent long strings from overflowing container */
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

/* Fix line height when title wraps */
h1,
h2,
h3 {
  line-height: 1.1;
}

/* Reduce header size on mobile */
@media only screen and (max-width: 720px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2.1rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  h4 {
    font-size: 1.25rem;
  }
}

/* Format links & buttons */
a,
a:visited {
  color: var(--accent);
}

a:hover {
  text-decoration: none;
}

button,
[role='button'],
input[type='submit'],
input[type='reset'],
input[type='button'],
label[type='button'] {
  border: none;
  border-radius: 5px;
  background-color: var(--accent);
  font-size: 1rem;
  color: var(--bg);
  padding: 0.7rem 0.9rem;
  margin: 0.5rem 0;
}

button[disabled],
[role='button'][aria-disabled='true'],
input[type='submit'][disabled],
input[type='reset'][disabled],
input[type='button'][disabled],
input[type='checkbox'][disabled],
input[type='radio'][disabled],
select[disabled] {
  cursor: not-allowed;
}

input:disabled,
textarea:disabled,
select:disabled,
button[disabled] {
  cursor: not-allowed;
  background-color: var(--disabled);
  color: var(--text-light);
}

input[type='range'] {
  padding: 0;
}

/* Set the cursor to '?' on an abbreviation and style the abbreviation to show that there is more information underneath */
abbr[title] {
  cursor: help;
  text-decoration-line: underline;
  text-decoration-style: dotted;
}

button:enabled:hover,
[role='button']:not([aria-disabled='true']):hover,
input[type='submit']:enabled:hover,
input[type='reset']:enabled:hover,
input[type='button']:enabled:hover,
label[type='button']:hover {
  filter: brightness(1.4);
  cursor: pointer;
}

button:focus-visible:where(:enabled, [role='button']:not([aria-disabled='true'])),
input:enabled:focus-visible:where([type='submit'], [type='reset'], [type='button']) {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Format navigation */
header > nav {
  font-size: 1rem;
  line-height: 2;
  padding: 1rem 0 0 0;
}

/* Use flexbox to allow items to wrap, as needed */
header > nav ul,
header > nav ol {
  align-content: space-around;
  align-items: center;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

/* List items are inline elements, make them behave more like blocks */
header > nav ul li,
header > nav ol li {
  display: inline-block;
}

header > nav a,
header > nav a:visited {
  margin: 0 0.5rem 1rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  display: inline-block;
  padding: 0.1rem 1rem;
  text-decoration: none;
}

header > nav a:hover {
  border-color: var(--accent);
  color: var(--accent);
  cursor: pointer;
}

/* Reduce nav side on mobile */
@media only screen and (max-width: 720px) {
  header > nav a {
    border: none;
    padding: 0;
    text-decoration: underline;
    line-height: 1;
  }
}

/* Consolidate box styling */
aside,
details,
pre,
progress {
  border: 1px solid var(--border);
  border-radius: 5px;
  margin-bottom: 1rem;
}

article,
fieldset {
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: 5px;
  margin-bottom: 1rem;
}

article h2:first-child,
section h2:first-child {
  margin-top: 1rem;
}

section {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2rem 1rem;
  margin: 3rem 0;
}

/* Don't double separators when chaining sections */
section + section,
section:first-child {
  border-top: 0;
  padding-top: 0;
}

section:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

details {
  padding: 0.7rem 1rem;
}

summary {
  cursor: pointer;
  font-weight: bold;
  padding: 0.7rem 1rem;
  margin: -0.7rem -1rem;
  word-break: break-all;
}

details[open] > summary + * {
  margin-top: 0;
}

details[open] > summary {
  margin-bottom: 0.5rem;
}

details[open] > :last-child {
  margin-bottom: 0;
}

/* Format tables */
table {
  border-collapse: collapse;
  display: block;
  margin: 1.5rem 0;
  overflow: auto;
  width: 100%;
}

td,
th {
  border: 1px solid var(--border);
  text-align: left;
  padding: 0.5rem;
}

th {
  background-color: var(--accent-bg);
  font-weight: bold;
}

tr:nth-child(even) {
  /* Set every other cell slightly darker. Improves readability. */
  background-color: var(--accent-bg);
}

table caption {
  font-weight: bold;
  margin-bottom: 0.5rem;
}

/* Format forms */
textarea,
select,
input {
  font-size: inherit;
  font-family: inherit;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  color: var(--text);
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  box-shadow: none;
  max-width: 100%;
  display: inline-block;
}
label {
  display: block;
  font-weight: bold;
  margin-top: 1rem;
}
textarea:not([cols]) {
  width: 100%;
}
p.error,
span.error {
  color: var(--validation-error);
}
.valError {
  border-color: var(--validation-error);
}

/* Add arrow to drop-down */
select:not([multiple]) {
  background-image: linear-gradient(45deg, transparent 49%, var(--text) 51%),
    linear-gradient(135deg, var(--text) 51%, transparent 49%);
  background-position: calc(100% - 15px), calc(100% - 10px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 25px;
}

/* checkbox and radio button style */
input[type='checkbox'],
input[type='radio'] {
  vertical-align: middle;
  position: relative;
  width: min-content;
}

input[type='checkbox'] + label,
input[type='radio'] + label {
  display: inline-block;
}

input[type='radio'] {
  border-radius: 100%;
}

input[type='checkbox']:checked,
input[type='radio']:checked {
  background-color: var(--accent);
}

input[type='checkbox']:checked::after {
  /* Creates a rectangle with colored right and bottom borders which is rotated to look like a check mark */
  content: ' ';
  width: 0.18em;
  height: 0.32em;
  border-radius: 0;
  position: absolute;
  top: 0.05em;
  left: 0.17em;
  background-color: transparent;
  border-right: solid var(--bg) 0.08em;
  border-bottom: solid var(--bg) 0.08em;
  font-size: 1.8em;
  transform: rotate(45deg);
}
input[type='radio']:checked::after {
  /* creates a colored circle for the checked radio button  */
  content: ' ';
  width: 0.25em;
  height: 0.25em;
  border-radius: 100%;
  position: absolute;
  top: 0.125em;
  background-color: var(--bg);
  left: 0.125em;
  font-size: 32px;
}

/* Makes input fields wider on smaller screens */
@media only screen and (max-width: 720px) {
  textarea,
  select,
  input {
    width: 100%;
  }
}

/* Set a height for color input */
input[type='color'] {
  height: 2.5rem;
  padding: 0.2rem;
}

/* do not show border around file selector button */
input[type='file'] {
  border: 0;
}

/* Misc body elements */
hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 1rem auto;
}

mark {
  padding: 2px 5px;
  border-radius: 4px;
  background-color: var(--marked);
}

img,
video {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
}

figure {
  margin: 0;
  text-align: center;
}

figcaption {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

blockquote {
  margin: 2rem 0 2rem 2rem;
  padding: 0.4rem 0.8rem;
  border-left: 0.35rem solid var(--accent);
  color: var(--text-light);
  font-style: italic;
}

cite {
  font-size: 0.9rem;
  color: var(--text-light);
  font-style: normal;
}

dt {
  color: var(--text-light);
}

/* Use mono font for code elements */
code,
pre,
pre span,
kbd,
samp {
  font-family: var(--mono-font);
  color: var(--code);
}

kbd {
  color: var(--preformatted);
  border: 1px solid var(--preformatted);
  border-bottom: 3px solid var(--preformatted);
  border-radius: 5px;
  padding: 0.1rem 0.4rem;
}

pre {
  padding: 1rem 1.4rem;
  max-width: 100%;
  overflow: auto;
  color: var(--preformatted);
}

/* Fix embedded code within pre */
pre code {
  color: var(--preformatted);
  background: none;
  margin: 0;
  padding: 0;
}

/* Progress bars */
/* Declarations are repeated because you */
/* cannot combine vendor-specific selectors */
progress {
  width: 100%;
}

progress:indeterminate {
  background-color: var(--accent-bg);
}

progress::-webkit-progress-bar {
  border-radius: 5px;
  background-color: var(--accent-bg);
}

progress::-webkit-progress-value {
  border-radius: 5px;
  background-color: var(--accent);
}

progress::-moz-progress-bar {
  border-radius: 5px;
  background-color: var(--accent);
  transition-property: width;
  transition-duration: 0.3s;
}

progress:indeterminate::-moz-progress-bar {
  background-color: var(--accent-bg);
}

@media print {
  body {
    visibility: hidden;
  }
}