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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--from);
  outline-offset: 2px;
  border-radius: 3px;
}

.shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0;
}

/* --- header --------------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(11, 14, 20, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.topbar__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 28px;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.brand__mark {
  width: 15px;
  height: 15px;
  align-self: center;
  color: var(--from);
}

.brand__dim { color: var(--fg-3); font-weight: 400; }

.topnav {
  display: flex;
  gap: 22px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--fg-2);
}

.topnav a { text-decoration: none; padding: 4px 0; }
.topnav a:hover { color: var(--fg); }
.topnav a[aria-current="page"] { color: var(--fg); box-shadow: inset 0 -1px 0 var(--from); }

/* search sits at the far right of the header */
.search {
  position: relative;
  margin-left: auto;
  width: 290px;
}

.search__field {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 10px;
  background: var(--panel);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
}

.search__field:focus-within { border-color: var(--from); }

.search__icon { width: 14px; height: 14px; color: var(--fg-3); flex: none; }

.search input {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 0;
}

.search input:focus { outline: none; }
.search input::placeholder { color: var(--fg-3); }

.search__key {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--fg-3);
  border: 1px solid var(--line-2);
  border-radius: 3px;
  padding: 1px 5px;
  flex: none;
}

.search__results {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  left: auto;
  width: 420px;
  max-width: min(420px, calc(100vw - 32px));
  max-height: 380px;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.55);
  padding: 4px;
  margin: 0;
  list-style: none;
  display: none;
}

.search__results[data-open="true"] { display: block; }

.search__results li > button {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  border-radius: 4px;
  padding: 7px 8px;
  color: var(--fg);
  cursor: pointer;
}

.search__id {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--mono);
  font-size: 12.5px;
}

.search__tag {
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  border: 1px solid var(--line-2);
  border-radius: 3px;
  padding: 0 4px;
}

.search__snippet {
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--fg-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search__results li > button:hover,
.search__results li[aria-selected="true"] > button {
  background: var(--panel-2);
}

.search__results mark { background: rgba(77, 157, 255, 0.16); color: var(--from); border-radius: 2px; }
.search__snippet mark { color: var(--fg); background: rgba(77, 157, 255, 0.2); }
.search__empty { padding: 10px; color: var(--fg-3); font-family: var(--mono); font-size: 12px; }

/* --- hero ----------------------------------------------------------------- */
.hero { padding: 62px 0 34px; }

.hero h1 {
  font-family: var(--mono);
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 14px 0 0;
  max-width: 17ch;
}

.hero h1 em { font-style: normal; color: var(--fg-3); }

.hero__lede {
  max-width: 62ch;
  color: var(--fg-2);
  margin: 18px 0 0;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  margin: 30px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}

.stats div { display: flex; flex-direction: column-reverse; gap: 2px; }

.stats dt {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}

.stats dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* --- atlas + doc pane ----------------------------------------------------- */
.atlas { padding: 8px 0 0; }

.atlas__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.atlas__hint {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--fg-3);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
  height: min(70vh, 640px);
  min-height: 460px;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-2);
}

.split__graph { position: relative; border-right: 1px solid var(--line-2); }
.split__graph iframe { display: block; width: 100%; height: 100%; border: 0; }

.pane { display: flex; flex-direction: column; min-width: 0; background: #10151e; }

.pane__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 36px;
  flex: none;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--fg-3);
}

.pane__path { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pane__path b { color: var(--fg); font-weight: 600; }

.pane__open {
  margin-left: auto;
  flex: none;
  text-decoration: none;
  color: var(--fg-2);
  border: 1px solid var(--line-2);
  border-radius: 4px;
  padding: 2px 7px;
}

.pane__open:hover { color: var(--fg); border-color: var(--from); }

.pane iframe { flex: 1; width: 100%; border: 0; background: #10151e; }

/* --- prose ---------------------------------------------------------------- */
.prose { padding: 64px 0 20px; }

.prose__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
  margin-top: 22px;
}

.prose h2 {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}

.prose h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.prose p { color: var(--fg-2); margin: 0 0 12px; font-size: 14px; }
.prose code { font-family: var(--mono); font-size: 12.5px; color: var(--fg); background: var(--panel); border: 1px solid var(--line); border-radius: 3px; padding: 1px 4px; }

/* --- footer --------------------------------------------------------------- */
.site-foot {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 22px 0 46px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--fg-3);
}

.site-foot__inner { display: flex; flex-wrap: wrap; gap: 18px; }
.site-foot a { color: var(--fg-2); text-decoration: none; }
.site-foot a:hover { color: var(--fg); }
.site-foot span:last-child { margin-left: auto; }

/* --- responsive ----------------------------------------------------------- */
@media (max-width: 1000px) {
  .topnav { display: none; }
  .search { width: 210px; }
  .split {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
  }
  .split__graph { height: 58vh; min-height: 380px; border-right: 0; border-bottom: 1px solid var(--line-2); }
  .pane { height: 56vh; min-height: 360px; }
  .prose__grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }
}

@media (max-width: 620px) {
  .shell, .topbar__inner { padding: 0 16px; }
  .hero { padding: 40px 0 26px; }
  .stats { gap: 22px; }
  .atlas__hint { display: none; }
}