:root {
  --bg: #0b0c0e;
  --side: #07080a;
  --card: #0f1113;
  --raised: #121316;
  --line: #1f2226;
  --line-strong: #2a2d32;
  --ink: #f0f2f4;
  --muted: #94999f;
  --faint: #6b7076;
  --accent: #f45120;
  --stage: radial-gradient(120% 90% at 50% 20%, #1a1c22 0%, #0f1113 60%);
  --code-bg: #0f1113;
  --tk-c: #6b7076;
  --tk-s: #9ad18b;
  --tk-k: #ff7a59;
  --tk-t: #7cc4ff;
  --tk-a: #c9a0ff;
  --tk-n: #ffcb6b;
  --tk-f: #ffd580;
  --tk-p: #94999f;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI Variable Text", "Segoe UI", system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #f7f6f3;
  --side: #f1efeb;
  --card: #fcfbfa;
  --raised: #fff;
  --line: #e6e3de;
  --line-strong: #d6d2cb;
  --ink: #101419;
  --muted: #5f646b;
  --faint: #8a8f96;
  --stage: radial-gradient(120% 90% at 50% 20%, #ffffff 0%, #f1efeb 70%);
  --code-bg: #f1efeb;
  --tk-c: #8a8f96;
  --tk-s: #2f7d32;
  --tk-k: #c2410c;
  --tk-t: #1d63c9;
  --tk-a: #7c3aed;
  --tk-n: #a15c00;
  --tk-f: #9a5b00;
  --tk-p: #6b7078;
  color-scheme: light;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px / 1.55 var(--sans);
}
a {
  color: inherit;
}
code,
pre {
  font-family: var(--mono);
  font-size: 12px;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.layout {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: 100vh;
}

/* Sidebar */
.side {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--side);
  border-right: 1px solid var(--line);
  padding: 20px 12px 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 16px;
  text-decoration: none;
}
.brand b {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand span {
  font: 11px var(--mono);
  color: var(--faint);
  margin-left: auto;
}
.filter {
  width: 100%;
  margin: 0 0 16px;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--raised);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
}
.filter::placeholder {
  color: var(--faint);
}
.side h4 {
  margin: 18px 8px 6px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--faint);
}
.side a.link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 7px;
  text-decoration: none;
  color: var(--muted);
  font-size: 13px;
}
.side a.link:hover {
  color: var(--ink);
  background: var(--raised);
}
.side a.link[aria-current="true"] {
  color: var(--ink);
  background: var(--line);
}
.side a.sub {
  padding-left: 10px;
}
.side a.sub agent-avatar {
  flex: none;
}
.side .set {
  color: var(--ink);
  font-weight: 500;
}

/* Top bar */
.top {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  padding: 12px 32px;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.top .label {
  font-size: 12px;
  color: var(--faint);
  margin-right: 4px;
}
.seg {
  display: inline-flex;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 3px;
}
.seg button {
  all: unset;
  cursor: pointer;
  padding: 5px 11px;
  border-radius: 7px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
}
.seg button[aria-pressed="true"] {
  background: var(--line);
  color: var(--ink);
}
.seg button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Content */
main {
  padding: 40px 32px 120px;
  max-width: 1120px;
}
section {
  margin-bottom: 72px;
}
h1 {
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin: 0 0 8px;
}
h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 6px;
}
h3 {
  font-size: 15px;
  font-weight: 600;
  margin: 28px 0 8px;
}
.lead {
  color: var(--muted);
  font-size: 16px;
  max-width: 620px;
  margin: 0 0 24px;
}
.sub-lead {
  color: var(--muted);
  margin: 0 0 20px;
  max-width: 620px;
}
.eyebrow {
  font: 500 11px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
}
.hero-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

pre {
  position: relative;
  margin: 0 0 12px;
  padding: 14px 72px 14px 16px;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow-x: auto;
  line-height: 1.6;
}
pre .copy {
  position: absolute;
  top: 8px;
  right: 8px;
  cursor: pointer;
  font: 500 11px var(--sans);
  color: var(--muted);
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--raised);
}
pre .copy:hover {
  color: var(--ink);
}
.tk-c {
  color: var(--tk-c);
  font-style: italic;
}
.tk-s {
  color: var(--tk-s);
}
.tk-k {
  color: var(--tk-k);
}
.tk-t {
  color: var(--tk-t);
}
.tk-a {
  color: var(--tk-a);
}
.tk-n {
  color: var(--tk-n);
}
.tk-f {
  color: var(--tk-f);
}
.tk-p {
  color: var(--tk-p);
}
:not(pre) > code {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 5px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  font-weight: 500;
  color: var(--faint);
  font-size: 12px;
}
td:first-child {
  white-space: nowrap;
}

/* Playground */
.play {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 16px;
}
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.stage {
  background: var(--stage);
  display: grid;
  place-items: center;
  min-height: 340px;
  border-radius: 16px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.controls {
  padding: 18px;
  display: grid;
  gap: 16px;
  align-content: start;
}
.field > span {
  display: block;
  font-size: 12px;
  color: var(--faint);
  margin-bottom: 6px;
}
.picker {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}
.picker button {
  all: unset;
  cursor: pointer;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--raised);
}
.picker button[aria-pressed="true"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.picker button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}
.tree {
  padding: 8px;
}
.row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 10px;
  border-radius: 10px;
}
.row .n {
  font-weight: 500;
}
.row .s {
  margin-left: auto;
  font-size: 12px;
  color: var(--faint);
}
.row.child {
  padding-left: 34px;
}

/* Gallery */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  scroll-margin-top: 80px;
}
.card .stage {
  border: 0;
  border-radius: 0;
  border-bottom: 1px solid var(--line);
  min-height: 220px;
}
.card .tag {
  position: absolute;
  top: 12px;
  left: 12px;
  font: 500 11px var(--mono);
  color: var(--faint);
}
.card .stage .try {
  position: absolute;
  top: 8px;
  right: 8px;
  cursor: pointer;
  font-size: 12px;
  color: var(--muted);
  padding: 4px 9px;
  border-radius: 7px;
  border: 1px solid var(--line);
  background: var(--raised);
  opacity: 0;
  transition: opacity 0.15s;
}
.card:hover .try,
.card .try:focus-visible {
  opacity: 1;
}
.card .body {
  padding: 14px 16px 16px;
}
.card h3 {
  margin: 0;
}
.card p {
  margin: 4px 0 14px;
  color: var(--muted);
  font-size: 13px;
}
.states {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.states figure {
  margin: 0;
  display: grid;
  justify-items: center;
  gap: 2px;
  padding: 8px 0 6px;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.states figcaption {
  font-size: 11px;
  color: var(--faint);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .side {
    position: static;
    height: auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .side nav {
    display: none;
  }
  .side.open nav {
    display: block;
  }
  .top {
    padding: 10px 16px;
    flex-wrap: wrap;
    justify-content: flex-start;
  }
  main {
    padding: 28px 16px 80px;
  }
  .play {
    grid-template-columns: 1fr;
  }
  .picker {
    grid-template-columns: repeat(6, 1fr);
  }
}
.menu {
  display: none;
  cursor: pointer;
  font: 500 12px var(--sans);
  color: var(--muted);
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--raised);
  margin-left: auto;
}
@media (max-width: 900px) {
  .menu {
    display: inline-block;
  }
}