:root {
  --black: #000000;
  --white: #ffffff;
  --light-grey: #f2f2f2;
  --mid-grey: #666666;
  --border: #d5d5d5;
  --content-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--black);
  background: var(--white);
}

body {
  margin: 0;
  min-height: 100vh;
}

a {
  color: inherit;
}

.site-header {
  background: var(--white);
}

.site-title {
  width: min(100% - 2rem, var(--content-width));
  margin: 0 auto;
  padding: 1.5rem 0 1.25rem;
  color: var(--black);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1;
}

.site-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 0 max(1rem, calc((100% - var(--content-width)) / 2));
  color: var(--white);
  background: var(--black);
}

.site-nav a {
  display: block;
  padding: 1rem 1.25rem;
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--black);
  background: var(--white);
  outline: none;
}

.site-nav a:focus-visible {
  box-shadow: inset 0 0 0 3px var(--black);
}

.home-page {
  min-height: calc(100vh - 8.5rem);
}

.page-content {
  width: min(100% - 2rem, var(--content-width));
  margin: 0 auto;
  padding: 3rem 0 5rem;
}

.page-content--narrow,
.page-content--article {
  max-width: 760px;
}

.page-introduction {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.1;
}

h2 {
  font-size: 1.35rem;
  line-height: 1.25;
}

p {
  line-height: 1.65;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1.5rem;
}

.project-card {
  overflow: hidden;
  border: 2px solid var(--black);
  background: var(--white);
}

.card-placeholder {
  display: grid;
  min-height: 180px;
  place-items: center;
  padding: 1rem;
  color: var(--mid-grey);
  background: var(--light-grey);
  border-bottom: 2px solid var(--black);
  font-weight: 700;
}

.card-placeholder--video {
  aspect-ratio: 16 / 9;
  min-height: auto;
}

.card-content {
  padding: 1.25rem;
}

.card-link,
.back-link {
  display: inline-block;
  font-weight: 700;
  text-underline-offset: 0.2em;
}

.card-link[href="#"] {
  color: var(--mid-grey);
  pointer-events: none;
}

.blog-list {
  border-top: 2px solid var(--black);
}

.blog-summary {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.blog-summary h2 a {
  text-underline-offset: 0.2em;
}

.post-date {
  margin-bottom: 0.5rem;
  color: var(--mid-grey);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.back-link {
  margin-bottom: 2rem;
}

.page-content--article h2 {
  margin-top: 2.25rem;
}

@media (max-width: 600px) {
  .site-title {
    padding-top: 1.25rem;
  }

  .site-nav {
    justify-content: stretch;
    padding: 0;
  }

  .site-nav a {
    flex: 1 1 50%;
    text-align: center;
  }

  .page-content {
    padding-top: 2rem;
  }
}