/* 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: #eee;
  --accent-bg: #f5f7ff;
  --text: #212121;
  --text-light: #585858;
  --border: #d8dae1;
  --accent: #627f9a;
  --code: #627f9a;
  --preformatted: #444;
  --marked: #fabd2f;
  --disabled: #efefef;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #212121;
    --accent-bg: #2b2b2b;
    --text: #dcdcdc;
    --text-light: #ababab;
    --border: #666;
    --accent: #ffb300;
    --code: #7b9fc0;
    --preformatted: #ccc;
    --disabled: #111;
  }
  /* Add a bit of transparency so light media isn't so glaring in dark mode */
  img,
  video {
    opacity: 0.8;
  }
}

/* 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;
  display: grid;
  grid-template-columns: 1fr min(45rem, 100%) 1fr;
  margin: 0;
}
body > * {
  grid-column: 2;
}

/* Make the header bg full width, but the content inline with body */
body > header {
 /* background-color: var(--accent-bg);
  border-bottom: 1px solid var(--border); */
  text-align: center;
  padding: 0 0.5rem 0 0.5rem;
  grid-column: 0 / -1;
}

body > header h1 {
  max-width: 1200px;
  margin: 1rem auto;
}

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

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

body > footer {
  margin-top: 1rem;
  padding: 2rem 1rem 1.5rem 1rem;
  color: var(--text-light);
  font-size: 0.9rem;
  text-align: center;

}

/* 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] {
  opacity: 0.5;
  cursor: not-allowed;
}

input:disabled,
textarea:disabled,
select:disabled {
  cursor: not-allowed;
  background-color: var(--disabled);
}

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

/* Set the cursor to '?' while hovering over an abbreviation */
abbr {
  cursor: help;
}

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

/* 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: underline;
 /* text-decoration: none; */
}


header > nav a:hover {
  filter: brightness(1);
  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 {
  background-color: var(--accent-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  margin-bottom: 1rem;
}

aside {
  font-size: 1rem;
  width: 30%;
  padding: 0 15px;
  margin-left: 15px;
  float: right;
}

/* Make aside full-width on mobile */
@media only screen and (max-width: 720px) {
  aside {
    width: 100%;
    float: none;
    margin-left: 0;
  }
}

article, fieldset {
  padding: 0.3rem;
  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 0.2rem;
  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;
}
textarea:not([cols]) {
  width: 100%;
}

/* 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;
}

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%;
  }
}

/* Ensures the checkbox and radio inputs do not have a set width like other input fields */
input[type="checkbox"],
input[type="radio"] {
  width: auto;
}

/* 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 {
  color: var(--border);
  border-top: 1px;
  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;
}

dl {
  display: grid;
  grid-template-columns: auto 1fr;
}

dl dt {
  grid-column-start: 1;
  color: var(--text-light);
}

dl dd {
  grid-column-start: 2;
}

/* 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);
}

/* 2. Classes  ––––––––––––––––––––-–––––––––––––– */

/* align */
.text-left   { text-align: left; }
.text-right  { text-align: right; }
.text-center { text-align: center; }
.float-left  { float: left !important; }
.float-right { float: right !important; }
.clearfix    { clear: both; }
.justify    { text-align: justify; text-justify: auto; }

/* colors */
.text-black    { color: #000; }
.text-white    { color: #fff; }
.text-primary  { color: var(--text); }
.text-secondary{ color: var(--accent); }
.bg-white    { background-color: #fff; }
.bg-light    { background-color: var(--bg); }
.bg-primary  { background-color: var(--bg); }
.bg-secondary { background-color: var(--accent-bg); }
.bg-gradient { background: linear-gradient(to top, #3e5060 0%, #7b9fc0 100%); }

/* text big */
.headline-big {
  	color: var(--accent);
	  float: center;
  	font-size: clamp(4.10rem,2.7rem + 6.89vw,8rem);
  	/* font-size: clamp(4.21rem,2.83rem + 6.89vw,8rem); */
}

/* FIXED 2 columns */
.fixed-row { display: flex; margin:  0.5rem 0rem; align-items: stretch; }
.fixed-row .fixed-col-6 { flex: 0 0 50%; max-width: 50%; }


/* Grid */
.row { display: flex; margin:  0.5rem -0.6rem; align-items: stretch; }
.row [class*="col"] { padding: 0  0.5rem; }
.row .col   { flex: 1 1 100%; }
.row .col-2 { flex: 0 0 16.66%; max-width: 16.66%;}
.row .col-3 { flex: 0 0 25%; max-width: 25%;}
.row .col-4 { flex: 0 0 33.33%; max-width: 33.33%; }
.row .col-5 { flex: 0 0 41.66%; max-width: 41.66%; }
.row .col-6 { flex: 0 0 50%; max-width: 50%; }
@media (max-width: 40rem) { .row { flex-direction: column; } }

/* Cards. */
.cards {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.cards_item {
  display: flex;
  padding: 0.3rem;
}

@media (min-width: 40rem) {
  .cards_item {
    width: 50%;
  }
}

@media (min-width: 56rem) {
  .cards_item {
    width: 50%;
  }
}

.card {
  background-color: var(--accent-bg);
  border-radius: 0.3rem;
  /* box-shadow: 0 20px 30px -10px var(--border); */
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card_content {
  padding: 0.5rem;
  background: var(--accent-bg);
}

/* img offset */

.image-stack {
  display: grid;
  position: relative; // imperative for the overlapping to work
  grid-template-columns: repeat(10, 1fr);
}

.image-stack__item--bottom {
  grid-column: 2 / -2;
  grid-row: 1;
}

.image-stack__item--top {
  grid-row: 1;
  grid-column: 1 / span 5;
  padding-top: 20%; // slightly arbitrary, keeps proportion once resized
  z-index: 1; // tells the browser to make this image on top
}

/* SVG */
.svg-icon {
  display: inline-flex;
  align-self: center;
}
.svg-icon svg {
  height:1em;
  width:1em;
}
.svg-icon .svg-baseline svg {
  top: .125em;
  position: relative;
}

/* be print-friendly */
@media print {
	@page { margin: 1.5cm 2cm; }
	html {font-size: 9pt!important; }
	body { max-width: 27cm; }
	p { orphans: 2; widows: 2; }
	caption, figcaption { page-break-before: avoid; }
	h2, h3, h4, h5 { page-break-after: avoid;}
	.noprint, body>nav, section:after { display: none; }
	.row { flex-direction: row; }
}