/* NOTE: This file is not included in the final HTML and is only used for easier testing/editing*/
/* Global variables. */
:root,
::backdrop {
  /* 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;
  --standard-border-radius: 5px;

  /* Default (light) theme */
  --bg: #fff;
  --accent-bg: #f5f7ff;
  --text: #212121;
  --text-light: #585858;
  --border: #898ea4;
  --accent: #0d47a1;
  --code: #d81b60;
  --preformatted: #444;
  --marked: #ffdd33;
  --disabled: #efefef;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root,
  ::backdrop {
    color-scheme: dark;
    --bg: #212121;
    --accent-bg: #2b2b2b;
    --text: #dcdcdc;
    --text-light: #ababab;
    --accent: #f06292;
    --code: #f06292;
    --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, 90%) 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 2rem 0.5rem;
  grid-column: 1 / -1;
}

body > header h1 {
  max-width: 1200px;
  margin: 1rem auto;
  color: var(--accent);
}

body > header p {
  max-width: 40rem;
  margin: 1rem auto;
  color: var(--text-light);
}

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

body > 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;
}

p {
  margin: 1.5rem 0;
}

/* 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 {
  text-decoration: none;
  padding: 2px;
  border-radius: var(--standard-border-radius);
  background-color: var(--accent-bg);
}

a:hover {
  text-decoration: underline;
}

a,
a:visited {
  color: var(--accent);
}

button,
.button,
a.button, /* extra specificity to override a */
input[type="submit"],
input[type="reset"],
input[type="button"],
label[type="button"] {
  border: 1px solid var(--accent);
  background-color: var(--accent);
  color: var(--bg);
  padding: 0.5rem 0.9rem;
  text-decoration: none;
  line-height: normal;
}

.button[aria-disabled="true"],
input:disabled,
textarea:disabled,
select:disabled,
button[disabled] {
  cursor: not-allowed;
  background-color: var(--disabled);
  border-color: var(--disabled);
  color: var(--text-light);
}

button:enabled:hover,
.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,
button:focus-visible:where(:enabled),
input:enabled:focus-visible:where(
    [type="submit"],
    [type="reset"],
    [type="button"]
  ) {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

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

/* 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="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);
}

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

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

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

/* Classes for notices */
.notice {
  background: var(--accent-bg);
  border: 2px solid var(--border);
  border-radius: 5px;
  padding: 1.5rem;
  margin: 2rem 0;
}