* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --light1: rgb(255, 255, 255);
  --light2: rgb(245, 245, 245);
  --dark1: rgb(10, 10, 10);
  --dark2: rgb(20, 20, 20);
  --page-color: var(--dark1);
  --surface-color: var(--dark2);
  --text-color: var(--light1);
  --border-color: var(--light1);
}

body:has(.theme-toggle-input:checked) {
  --page-color: var(--light1);
  --surface-color: var(--light2);
  --text-color: var(--dark1);
  --border-color: var(--dark1);
}

body {
  padding: 1rem;
  background-color: var(--page-color);
  color: var(--text-color);
  max-inline-size: 100rem;
  margin: 0 auto;
  font-family: Georgia, 'Times New Roman', Times, serif;
}

.theme-toggle-input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.theme-toggle {
  cursor: pointer;
  text-align: right;
  user-select: none;
}

.theme-light {
  display: none;
}

.theme-toggle-input:checked~.site .theme-dark {
  display: none;
}

.theme-toggle-input:checked~.site .theme-light {
  display: inline;
}

.theme-toggle-input:focus-visible~.site .theme-toggle {
  outline: 2px solid currentColor;
  outline-offset: 0.25rem;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  font-size: 1.25rem;
  font-weight: bold;
  margin-block-end: 0.5rem;
  border: 1px solid var(--border-color);
  background-color: var(--surface-color);
  padding: 1rem;
}

main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

section {
  display: flex;
  gap: 0.5rem;
  flex-direction: column;
}

section h2 {
  font-weight: normal;
  font-size: 1.5rem;
  border: 1px solid var(--border-color);
  background-color: var(--surface-color);
  padding: 0.5rem;
}

.content {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.intro {
  border: 1px solid var(--border-color);
  background-color: var(--surface-color);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  flex: 1;
}

.intro h1 {
  font-size: 1.75rem;
  margin-block-end: 0.5rem;
}

.intro p {
  line-height: 1.5;
}

article {
  border: 1px solid var(--border-color);
  background-color: var(--surface-color);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem;
  flex: 1;
  gap: 0.25rem;
  min-inline-size: 35ch;
}

article p.time {
  font-weight: bold;
}

article p {
  line-height: 1.5;
}

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

  &:hover {
    text-decoration: underline;
  }
}

span.number {
  font-size: 2rem;
}