:root {
  --color-bg-void: #f6f5f5;
  --color-bg-text: #fff;
  --color-bg-text-border: #e8e8e8;
  --color-text: #111;
  --color-text-weak: #777;
  --color-text-very-weak: #ddd;
  --color-button: hsl(350, 87%, 65%);
  --color-button-hover: hsl(350, 87%, 70%);
  --color-link: hsl(350, 87%, 55%);

  --space-tiny: 4px;
  --space-small: 10px;
  --space-normal: 20px;
  --space-big: 32px;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Colors */
    --color-bg-void: #111114;
    --color-bg-text: #333337;
    --color-bg-text-border: #414145;
    --color-text: #f3f3f3;
    --color-text-weak: #ababab;
    --color-text-very-weak: #666;
    --color-button: hsl(350, 87%, 65%);
    --color-button-hover: hsl(350, 87%, 70%);
    --color-link: hsl(350, 87%, 70%);

    color-scheme: light dark;
  }
}

body {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg-void);
  padding: 0;
  margin: 0;
}

article {
  max-width: 600px;
  margin: var(--space-normal) auto;
  background-color: var(--color-bg-text);
  padding: var(--space-normal);
  border-radius: var(--space-small);
  box-shadow: 0 var(--space-normal) var(--space-big) rgba(0, 0, 0, 0.03);
  border: 1px solid var(--color-bg-text-border);
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 0;
  margin-bottom: var(--space-small);
  font-weight: 500;
  line-height: 1.1;
}
h1 {
  font-size: 32px;
}
h2 {
  font-size: 24px;
}
h3 {
  font-size: 20px;
}
h4 {
  font-size: 16px;
}
h5 {
  font-size: 14px;
}
h6 {
  font-size: 12px;
}

p {
  margin-top: 0;
  margin-bottom: var(--space-small);
}

blockquote {
  margin: 0 0 var(--space-small);
  padding: 0 var(--space-small);
  color: var(--color-text-weak);
  border-left: var(--space-tiny) solid var(--color-text-very-weak);
}

img {
  max-width: 100%;
}

hr {
  height: 4px;
  padding: 0;
  margin: 20px 0;
  background-color: #ddd;
  border: 0 none;
}

ul {
  padding-left: var(--space-normal);
}

a.btn {
  background: var(--color-button);
  border-radius: 999px;
  box-shadow: var(--color-button) 0 10px 20px -10px;
  box-sizing: border-box;
  color: #fff;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 24px;
  opacity: 1;
  outline: 0 solid transparent;
  padding: 8px 18px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  width: fit-content;
  word-break: break-word;
  border: 0;
}

a.btn:hover {
  text-decoration: none;
  background: var(--color-button-hover);
}

.hidden {
  display: none;
}