:root {
  --color-primary: rgb(30, 102, 245);
  --color-primary-light: rgb(114, 135, 253);
  --color-bg: rgb(239, 241, 245);
  --color-links: rgb(30, 102, 245);
  --color-badge: hsl(220deg, 91%, 54%, 0.1);
  --headline-1: rgb(92, 95, 119);
  --headline-2: rgb(108, 111, 133);
  --text-primary: rgb(76, 79, 105);
  --text-secondary: rgb(92, 95, 119);
}

body {
  font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono,
    Bitstream Vera Sans Mono, Courier New, monospace, serif;
  background-color: var(--color-bg);
  color: var(--text-primary);
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

blockquote {
  margin: 0;
  padding-left: 1rem;
  color: var(--text-primary);
  border-left: 6px solid var(--color-primary);
}

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

a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

h1 {
  font-size: 1.5rem;
  line-height: 2rem;
  color: var(--headline-1);
}

h2 {
  font-size: 1.25rem;
  line-height: 1.75rem;
  margin-bottom: 1rem;
  color: var(--headline-1);
}

h3,
h4 {
  color: var(--headline-2);
}

p {
  margin: 1.5rem 0;
  line-height: 1.5;
}

ul {
  line-height: 1.3;
}

input,
textarea {
  border-radius: 4px;
  border: 1px solid #eee;
  padding: 0.5rem;
  resize: vertical;
}

button {
  border-radius: 4px;
  color: white;
  background-color: var(--color-primary);
  border: none;
  padding: 0.5rem;
  cursor: pointer;

  &:hover,
  &:focus {
    opacity: 0.8;
  }
}

pre:has(code) {
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  overflow: auto;
}

:not(pre) > code {
  font-size: 0.9rem;
  color: var(--text-secondary);
  background-color: var(--color-primary-light);
  padding: 0 0.25rem;
  border-radius: 4px;
}

nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

nav > a {
  display: block;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.date {
  font-size: 0.9rem;
  color: var(--text-secondary);
  background-color: var(--color-badge);
  padding: 0 0.25rem;
  border-radius: 4px;
}

.activity-grid {
  display: grid;
  grid-template-columns: 1fr 4fr;
  column-gap: 1rem;
  row-gap: 1rem;

  > h4 {
    margin: 0;
  }
}

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  row-gap: 1rem;
}

#contact-form {
  display: flex;
  flex-direction: column;
  row-gap: 1rem;

  > button {
    width: 100%;
  }
}

@media only screen and (max-width: 600px) {
  main {
    padding: 0 0.5rem;
  }

  nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .contact {
    display: flex;
    flex-direction: column;
  }

  .activity-grid {
    grid-template-columns: 1fr;
  }

  ul.links-list {
    padding-left: 1rem;
    font-size: 1.1rem;

    & > * {
      margin-bottom: 1rem;
    }
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: rgb(137, 180, 250);
    --color-links: rgb(137, 180, 250);
    --color-bg: rgb(30, 30, 46);
    --color-badge: hsl(217deg, 92%, 76%, 0.2);
    --text-primary: rgb(205, 214, 244);
    --text-secondary: rgb(147, 153, 178);
    --headline-1: rgb(186, 194, 222);
    --headline-2: rgb(166, 173, 200);
  }
}