/* global colours, spacing, fonts and utitlity classes */

:root {
  --color-primary-text: #333333;
  --color-supplementary-text: #666666;
  --color-primary-background: #ffffff;
  --color-dark-background: #333333;
  --color-light-background: #ffffff;
  --color-light-text: #fffaf0;
  --color-link: #4c9fd5;
  --color-trace-grey: #eeeeee;
  --color-pale-grey: #dddddd;
  /* primary chart colors */
  --color-dark-blue: #0b4572;
  --color-yellow: #efc530;
  --color-light-blue: #2f8fce;
  --color-red: #c7432b;
  --color-light-grey: #999999;
  --color-lilac: #a14a7b;
  --color-orange: #df9239;
  /* secondary chart colors*/
  --color-indigo: #673b9b;
  --color-pale-pink: #ffada9;
  --color-pale-blue: #ade2ea;
  --color-brown: #7c5641;

  /* measurements */
  --page-max-width: 1270px;
  --readable-max-width: 780px;

  --border-thin: 1px;
  --border-thick: 4px;

  --ratio: 1.5;
  --s-5: calc(var(--s-4) / var(--ratio));
  --s-4: calc(var(--s-3) / var(--ratio));
  --s-3: calc(var(--s-2) / var(--ratio));
  --s-2: calc(var(--s-1) / var(--ratio));
  --s-1: calc(var(--s0) / var(--ratio));
  --s0: 1rem;
  --s1: calc(var(--s0) * var(--ratio));
  --s2: calc(var(--s1) * var(--ratio));
  --s3: calc(var(--s2) * var(--ratio));
  --s4: calc(var(--s3) * var(--ratio));
  --s5: calc(var(--s4) * var(--ratio));
  --measure: 40rem;

  --serif: "Pt serif", "Times New Roman", Times, serif;
  --sans-serif: "PT Sans", Helvetica, sans-serif;
  --sans-serif-narrow: "PT Sans Narrow", Helvetica, sans-serif;
}

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

/* Remove default margin */
body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul[role="list"],
ol[role="list"] {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}

/* Set core body defaults */
body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture {
  max-width: 100%;
  display: block;
}

/* Inherit fonts for inputs and buttons */
input,
button,
textarea,
select {
  font: inherit;
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
/* end CSS reset */

body {
  color: var(--color-primary-text);
  background-color: var(--color-primary-background);
  font-family: var(--sans-serif);
  font-size: 12px;
}

a {
  color: var(--color-link);
}

.screenreader-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* "every layout" based stuff */
.stack {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.stack > * {
  margin-block: 0;
}

.stack > * + * {
  margin-block-start: var(--s1, 1.5rem);
}

.center {
  box-sizing: content-box;
  margin-inline: auto;
  max-inline-size: var(--page-max-width);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s0);
  justify-content: flex-start;
  align-items: center;
}

.box {
  padding: var(--s0);
  outline: 0.125rem solid transparent;
  outline-offset: -0.125rem;
}

.cluster,
.cluster-end {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space, 1rem);
  align-items: center;
}

.cluster-end {
  justify-content: flex-end;
}

.cluster {
  justify-content: flex-start;
}

/* typography */

h1 {
  font-family: var(--serif);
  font-size: 3.25rem;
  line-height: 4.25rem;
}

code {
  background-color: var(--color-pale-blue);
}

p,
li {
  font-family: var(--serif);
  font-size: 1.25rem;
  line-height: 2.25rem;
  box-sizing: content-box;
  width: 100%;
  max-width: var(--readable-max-width);
}

article h2,
article h3,
article h4,
article .subtitle,
article p,
article form,
article li {
  box-sizing: content-box;
  width: 100%;
  max-width: var(--readable-max-width);
  margin: auto;
}

article h2 {
  font-size: var(--s2);
  font-family: var(--sans-serif-narrow);
  font-weight: 700;
}

article h3 {
  font-size: var(--s1);
  font-family: var(--sans-serif-narrow);
  font-weight: 700;
}

blockquote {
  width: 100%;
  max-width: var(--readable-max-width);
  margin: auto;
  padding: var(--s1);
  border-left: var(--border-thick) solid var(--color-light-blue);
}
.stand-first {
  font-size: 1.85rem;
  line-height: 2.6rem;
}

button {
  cursor: pointer;
}