:root {
  --bg: #fbfbfa;
  --surface: #ffffff;
  --text: #0f0f0f;
  --muted: #737373;
  --line: #e6e4e0;
  --accent: #e0301e;
  --radius: 4px;
  --measure: 68rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d0d;
    --surface: #141414;
    --text: #f4f2ef;
    --muted: #8f8d89;
    --line: #262624;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/*
 * The `hidden` attribute must always win. Author rules like `.empty { display: flex }`
 * have the same specificity as the UA `[hidden] { display: none }` and load later, so
 * without this an element stays visible even after JS sets `hidden`.
 */
[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Helvetica Neue", Helvetica, -apple-system,
    BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Masthead ---------------------------------------------------------------- */

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.mark {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.dot {
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: currentColor;
}

/* Hero -------------------------------------------------------------------- */

main {
  flex: 1;
}

.crumb {
  padding-top: 2rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.crumb a {
  transition: color 140ms ease;
}

.crumb a:hover {
  color: var(--text);
}

.hero {
  padding: clamp(3.5rem, 11vw, 8rem) 0 clamp(3rem, 8vw, 5.5rem);
  max-width: 46rem;
}

.crumb + .hero {
  padding-top: clamp(2rem, 6vw, 4rem);
}

.eyebrow {
  margin: 0 0 1.75rem;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.lede {
  margin: 1.75rem 0 0;
  max-width: 34rem;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  color: var(--muted);
  text-wrap: pretty;
}

/* Directory --------------------------------------------------------------- */

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.count {
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  height: 100%;
  padding: 1.75rem 1.5rem 2.25rem;
  background: var(--bg);
  transition: background 140ms ease, transform 140ms ease;
}

.card:hover,
.card:focus-visible {
  background: var(--surface);
}

.card h3 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.012em;
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.tag {
  align-self: flex-start;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.go {
  position: absolute;
  right: 1.5rem;
  bottom: 1.25rem;
  font-size: 0.9375rem;
  color: var(--muted);
  opacity: 0;
  transform: translateX(-0.35rem);
  transition: opacity 140ms ease, transform 140ms ease;
}

.card:hover .go,
.card:focus-visible .go {
  opacity: 1;
  transform: translateX(0);
}

/* Empty state ------------------------------------------------------------- */

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: clamp(3.5rem, 10vw, 6rem) 1.5rem;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

.empty-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
}

.empty-note {
  margin: 0;
  max-width: 26rem;
  font-size: 0.875rem;
  color: var(--muted);
}

/* Colophon ---------------------------------------------------------------- */

.colophon {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Focus ------------------------------------------------------------------- */

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}