:root {
  color-scheme: light dark;
  --background: #f4f7fb;
  --surface: #ffffff;
  --text: #18243b;
  --muted: #516078;
  --accent: #2456b8;
  --border: #d7dfec;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
}

.site-header,
main,
footer {
  width: min(100% - 2.5rem, 64rem);
  margin-inline: auto;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 2rem;
}

.brand {
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: -0.04em;
}

.languages {
  display: flex;
  gap: 0.5rem;
}

.languages a {
  padding: 0.4rem 0.75rem;
  border-radius: 0.5rem;
  color: var(--muted);
  text-decoration: none;
}

.languages a[aria-current="page"] {
  background: var(--surface);
  color: var(--accent);
  font-weight: 650;
}

main {
  padding-block: clamp(2rem, 8vw, 6rem);
}

.eyebrow,
.project-type {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 18ch;
  margin-block: 0.75rem 1rem;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.1;
  letter-spacing: -0.045em;
}

.intro {
  margin-bottom: 2.5rem;
  color: var(--muted);
  font-size: 1.15rem;
}

.projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.project {
  display: flex;
  flex-direction: column;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}

.project:hover {
  border-color: var(--accent);
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.project h2 {
  margin-block: 0.75rem 0.5rem;
  font-size: 1.5rem;
  line-height: 1.3;
}

.project p {
  margin-block: 0 1.75rem;
  color: var(--muted);
}

.project-action {
  margin-top: auto;
  color: var(--accent);
  font-weight: 650;
}

footer {
  padding-block: 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

@media (max-width: 40rem) {
  .projects {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #101827;
    --surface: #18243b;
    --text: #edf2fa;
    --muted: #b3c0d5;
    --accent: #91b7ff;
    --border: #35445e;
  }
}