:root {
  --cl-1: #eeeeee;
  --cl-2: #111111;
  --cl-3: #c464d1;
  --cl-4: #aaaaaa;
}

@media (prefers-color-scheme: dark) {
	:root {
    --cl-1: #111111;
    --cl-2: #eeeeee;
    --cl-3: #c464d1; 
    --cl-4: #666666;
	}
}

html {
  box-sizing: border-box;
  font-family: monospace;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

body {
  background: var(--cl-1);
  color: var(--cl-2);
  font-size: 18px;
  margin: 0;
}

header {
  border-bottom: 0.1rem solid var(--cl-2);
  padding: 0 2rem;
}
footer {
  border-top: 0.1rem solid var(--cl-2);
  padding: 2rem;
}
main {
  padding: 5rem 10rem;
}
@media (max-width: 800px) {
  main {
    padding: 2rem;
  }
}

h1, h2, h3, h4, h5, h6 {
  font-family: serif;
}

@keyframes button-hover {
  0%{background-position: 100% 0%}
  50%{background-position: 50% 100%}
  100%{background-position: 0% 0%}
}

button {
  border: 0.1rem solid var(--cl-2);
  background: var(--cl-1);
  color: var(--cl-2);
  cursor: pointer;
  font-family: monospace;
  font-weight: bold;
  font-size: 1.5rem;
  padding: 1rem 1.5rem;
  margin: 0.25rem 0.25rem 0.25rem 0;
  box-shadow: 0.25rem 0.25rem var(--cl-2);
}
button:hover, tr:hover, li:hover, summary:hover {
  background: var(--cl-3);
  background: linear-gradient(to left, var(--cl-1) 50%, var(--cl-3) 50%);
  background-size: 200% 200%;
  animation: button-hover 0.2s linear forwards;
}
button:active {
  background: var(--cl-3);
  border-color: var(--cl-3);
  margin: 0.5rem 0 0 0.5rem;
  padding: 0.75rem 1.5rem 1.25rem 1.25rem;
  box-shadow: none;
}
button:disabled {
  border-color: var(--cl-4);
  color: var(--cl-4);
  box-shadow: none;
  cursor: not-allowed;
}
button:disabled:hover {
  background: var(--cl-1);
  animation: none;
  box-shadow: none;
}
button:disabled:active {
  background: var(--cl-1);
  color: var(--cl-4);
  padding: 1rem 1.5rem;
  margin: 0.25rem;
  box-shadow: none;
}

mark {
  background: var(--cl-3);
  color: var(--cl-2);
}

a {
  color: var(--cl-3);
}
a:visited {
  color: var(--cl-4);
}

dd::before {
  content: "🮉🭬 ";
}

ul {
  list-style: none;
  padding: 0;
}
ul li::before {
  content: "🮮 ";
  margin: 0 0.5rem;
  line-height: 1rem;
}
ol li::marker {
  background: var(--cl-3);
}

blockquote {
  background: var(--cl-4);
  margin: 1rem 1rem 1rem 0;
  padding: 1.5rem;
  border-left: 0.1rem solid var(--cl-2);
}

pre {
  background: var(--cl-4);
  margin: 1rem 1rem 1rem 0;
  padding: 1.5rem;
}

caption {
  font-weight: bold;
  text-align: left;
  padding: 0.5rem 0;
}
table {
  border: 0.1rem solid var(--cl-2);
  border-collapse: collapse;
}
td, th {
  border: 0.1rem solid var(--cl-2);
  text-align: left;
  padding: 0.5rem;
}
th {
  background: var(--cl-4);
}

textarea, select, input {
  border: 0.1rem solid var(--cl-2);
  background: var(--cl-4);
  color: var(--cl-2);
  font-family: monospace;
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}
textarea:hover, select:hover, input:hover {
  background: var(--cl-3);
  background: linear-gradient(to left, var(--cl-4) 50%, var(--cl-3) 50%);
  background-size: 200% 200%;
  animation: button-hover 0.2s linear forwards;
}
label {
  margin-top: 1rem;
}
label, input[type="text"], input[type="email"], input[type="tel"], input[type="password"] {
  display: block;
}
input[type="radio"], input[type="checkbox"] {
  appearance: none;
  margin: 0;
  padding: 0.2rem 0.55rem;
  line-height: 1.8rem;
  color: var(--cl-4);
  font-weight: bold;
}
input[type="radio"]:hover, input[type="checkbox"]:hover {
  cursor: pointer;
}
input[type="radio"]:checked, input[type="checkbox"]:checked {
  background: var(--cl-2);
  color: var(--cl-3);
}
input[type="radio"]::before, input[type="checkbox"]::before {
  content: "🯀";
}

hr {
  border: 0.1rem solid var(--cl-2);
  margin: 4rem 0;
}

details {
  margin: 2rem 0;
  background: var(--cl-4);
}
summary {
  list-style: none;
  padding: 1rem;
  background: var(--cl-1);
  cursor: pointer;
}
summary::before {
  content: "🮥 ";
}
details[open] summary::before {
  content: "🮦 ";
}