:root {
  --bg: #fafaf9;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --line: #e5e5e3;
  --card: #ffffff;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --radius: 10px;
  --maxw: 64rem;
  --pad: clamp(1rem, 4vw, 2rem);
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Fira Code", Menlo, Consolas,
    monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --fg: #ececec;
    --muted: #9a9a9a;
    --line: #26262a;
    --card: #1a1a1d;
    --accent: #7aa6ff;
    --accent-fg: #0c0c0e;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.site-header {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.5rem var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--fg);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.wordmark:hover {
  text-decoration: none;
}
.mark {
  width: 80px;
  height: 80px;
  display: inline-block;
  color: var(--fg);
  flex-shrink: 0;
}

.site-header nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}
.site-header nav a {
  color: var(--muted);
}
.site-header nav a:hover {
  color: var(--fg);
  text-decoration: none;
}

.site-footer {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2rem var(--pad);
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 4rem;
}

/* home */
.hero {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--line);
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.125rem;
}

.section-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  margin: 2.5rem 0 1rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 18rem), 1fr));
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}
.project-grid > li {
  display: flex;
}

.card-link {
  color: var(--fg);
  display: flex;
  flex: 1;
  flex-direction: column;
}
.card-link:hover {
  text-decoration: none;
}

.project-card {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.project-card:hover {
  border-color: var(--fg);
  transform: translateY(-1px);
}
.project-card h3 {
  margin: 0;
  font-size: 1.1rem;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}
.project-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  flex: 1;
}
.project-card .card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}
.badge-coming-soon {
  border-color: var(--accent);
  color: var(--accent);
}
.badge-stable {
  border-color: #16a34a;
  color: #16a34a;
}
.badge-alpha {
  border-color: #d97706;
  color: #d97706;
}

/* project page */
.project-page {
  padding: 1.5rem 0 1rem;
}
.project-page .back {
  margin: 0 0 0.25rem;
  font-size: 0.9rem;
}
.project-hero h1 {
  font-family: var(--font-mono);
}
.project-hero .meta {
  margin: 1rem 0 0;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.95rem;
}
.project-page .prose {
  padding-top: 2.5rem;
}

.prose {
  max-width: 42rem;
}
.prose h2 {
  margin-top: 2rem;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}
.prose p,
.prose ul,
.prose ol {
  margin: 1rem 0;
}
.prose code {
  font-family: var(--font-mono);
  background: var(--card);
  border: 1px solid var(--line);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  font-size: 0.9em;
}
.prose pre {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.prose pre code {
  border: 0;
  padding: 0;
  background: transparent;
}

.readme-link {
  margin: 2rem 0 0;
  padding: 1rem 1.25rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  font-size: 0.95rem;
  color: var(--muted);
  max-width: 42rem;
}

/* about page */
.about {
  padding: 2.5rem 0 0;
  max-width: 42rem;
}
.about p:first-child {
  margin-top: 0;
}