:root {
  --font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Cantarell, Roboto, Oxygen, Ubuntu, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  --font-family-monospace: Consolas, Menlo, Monaco, Andale Mono WT, Andale Mono, Lucida Console, Lucida Sans Typewriter, DejaVu Sans Mono, Bitstream Vera Sans Mono, Liberation Mono, Nimbus Mono L, Courier New, Courier, monospace;

  --accent-color-dark: #1971c2;
  --accent-color-light: #d0ebff;

  --text-color: #212529;
  --border-color: rgba(0,0,0,0.15);
  --hover-color: rgba(0,0,0,0.05);

  --background-color: #f8f9fa;
  --well-color: #e9ecef;

  --accent-color: var(--accent-color-dark);
  --accent-color-back: var(--accent-color-light);

  --border-radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text-color: #e9ecef;
    --background-color: #212529;
    --well-color: #343a40;
    --accent-color: var(--accent-color-light);
    --accent-color-back: var(--accent-color-dark);

    --border-color: rgba(255,255,255,0.2);
    --hover-color: rgba(255,255,255,0.1);
  }
}

html {
	font-family: var(--font-family);
	text-align: left;
	font-size: 17px;
  background-color: var(--background-color);
  accent-color: var(--accent-color);
	line-height: 1.6rem;
}

body {
	color: var(--text-color);
	font-weight: 400;
  max-width: 800px;
  padding:1rem;
  margin: auto;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  padding: .5rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  li {
    list-style-type: none;
    margin:0;
    a, span {
      padding: .5rem;
    }
  }
}

// Typography

p,
h1,
h2,
h3,
h4,
h5,
h6,
ul,
ol,
hr,
table,
details
main,
.p,
input,
textarea,
select,
hgroup,
article {
    padding: 0;
    margin: 0 0 1rem 0;
}


p {
  &:last-child {
    margin-bottom:0;
  }
}

a {
  color: var(--accent-color);
  text-decoration:none;
  border-radius: 3px;
  padding: 1px;
  &:hover {
    background-color: var(--hover-color);
  }
}

:is(ul, ol) > :is(ul, ol) {
  margin-bottom:0;
}


li {
  margin-left: 1rem;
}

::selection, ::-moz-selection { 
  background: var(--accent-color-back); 
  color: var(--text-color); 
}

hr {
  border:0;
  border-bottom: 1px solid var(--border-color);
}

code,
mark {
	background-color:var(--well-color);
  padding: 5px;
  border-radius: 3px;
}

mark {  
  background-color: var(--accent-color-back);
  color:currentColor;
}

pre, code {
    font-family: var(--font-family-monospace);
}

/* ------------------ TITLES ------------------- */

hgroup > :is(h1, h2, h3, h4, h5, h6) {
  margin-bottom: 0;
}

hgroup {
  font-weight: 700;
}

h1, h2, h3, h4, h5, h6 {
  text-align: left;
	line-height: 1;
	font-weight:700;
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.33rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
  font-weight: 800;
}

/* ------------------ HR ------------------- */

/* ------------------ blocks ------------------- */

blockquote,
pre,
details {
    border: 0;
    border-radius: 6px;
    margin: 0 0 1rem 0;
    padding: .75rem;
    max-width: 100%;
    background-color: var(--well-color);
    border: 0;
    border-left: 6px solid var(--accent-color);
}

pre code {
  padding: 0;
}

summary {
  font-weight: 700;
  font-size: 0.9em;
  &:hover {
    background-color: var(--hover-color);
  }
}

.toolbar-end {
  margin-left: auto;
}

/* ------------------ INPUT ------------------- */

a, button, input {
  outline-color: var(--accent-color);
  outline-style: none;
  outline-width: 2px;
  &:focus-visible {
    outline-style: dashed;
  }
}

input, textarea, select {
  display:block;
  background-color: var(--background-color);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  outline-offset: 2px;
  padding: .5rem;
  color: var(--text-color);
  &:hover {
    background-color: var(--hover-color);
  }
}

label {
  font-size: .9rem;
  font-weight: bolder;
}

textarea {
  width: 100%;
  margin-bottom: 1rem;
}

input[type=checkbox], input[type=radio] {
  display: inline-block;
  appearance: none;
  aspect-ratio: 1;
  font-size: 1rem;
  height:1em;
  width:1em;
  box-sizing: border-box;
  line-height: 1;
  padding:0;
  margin: 0 .25em;
  border-radius: 3px;
  border: 1px solid var(--border-color);
  content: "";
  position: relative;
  top: .1rem;

  &:checked {
    background-color: var(--accent-color);
    box-shadow:inset 0px 0px 0px 3px var(--background-color);
  }

  &:hover {
    filter:brightness(.9);
  }
}

input[type=radio] {
  border-radius: 9999px;
}


button, .button, input[type=submit], input[type=reset], input[type=button] {
  background-color: var(--accent-color);
  color: var(--background-color);
  border: none;
  padding: .5rem 1rem;
  border-radius: var(--border-radius);
  outline-offset: 2px;
  display: inline-block;

  &:hover {
    background-color: var(--accent-color);
    outline-style: solid;
  }
}

/* ------------------ SPECIAL STYLING ------------------- */

.flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}