:root {
  color-scheme: dark;
  --ink: #e8eadf;
  --muted: #94998a;
  --acid: #d7ff52;
  --rust: #ff6b42;
  --panel: #171914;
  --line: #30342a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: #0d0e0c;
  color: var(--ink);
  font: 16px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 49.8%, #ffffff08 50%, transparent 50.2%),
    radial-gradient(circle at 15% 0, #d7ff5211, transparent 35%);
  background-size: 7rem 100%, 100% 100%;
}
a { color: inherit; }
nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  background: #0d0e0ce8;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
nav .brand {
  margin-right: auto;
  color: var(--acid);
  font-weight: 900;
  letter-spacing: .12em;
  text-decoration: none;
}
nav a:not(.brand) {
  color: var(--muted);
  text-decoration: none;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .12em;
}
nav a:hover { color: var(--ink); }
main {
  width: min(1180px, 92vw);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 7rem) 0 8rem;
}
.eyebrow {
  color: var(--acid);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .75rem;
}
h1 {
  color: var(--rust);
  font-family: Arial Black, Impact, sans-serif;
  font-size: clamp(3rem, 9vw, 8rem);
  line-height: .84;
  letter-spacing: -.065em;
  text-transform: uppercase;
  margin: .25em 0;
}
h2 { font: 900 2rem/1 Arial, sans-serif; text-transform: uppercase; }
.lede, .page-head > p {
  max-width: 54rem;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.3rem);
}
.hero { padding-bottom: 5rem; }
.page-head {
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 3rem;
}
.page-head h1 { font-size: clamp(3rem, 8vw, 7rem); }
.grid, .board, .forest {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.card, .cell {
  min-height: 14rem;
  padding: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--line);
  color: inherit;
  text-align: left;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: .35rem;
  transition: .15s transform, .15s border-color;
}
.card { min-height: 18rem; }
.cell { appearance: none; font: inherit; cursor: pointer; }
.card:hover, .cell:hover, .cell:focus-visible {
  transform: translate(-4px, -4px);
  border-color: var(--acid);
  outline: none;
}
.card h3, .cell h3 {
  font: 900 clamp(1.1rem, 2.6vw, 2rem)/1 Arial, sans-serif;
  text-transform: uppercase;
  margin: auto 0 .75rem;
}
.card p, .slot { color: var(--muted); font-size: .75rem; }
.score { color: var(--acid); font-size: 1.4rem; }
.cell.empty {
  cursor: default;
  border-style: dashed;
  background: transparent;
  transform: none;
}
.waiting {
  margin: auto 0 .75rem;
  color: var(--line);
  font: 900 clamp(1.1rem, 2.6vw, 2rem)/1 Arial, sans-serif;
  text-transform: uppercase;
}
.loading {
  display: grid;
  place-items: center;
  min-height: 50vh;
  color: var(--muted);
}
body.stage-open { overflow: hidden; }
#stage {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  background: #0d0e0cf2;
  padding: clamp(.75rem, 2.5vw, 2rem);
  backdrop-filter: blur(8px);
}
.stage-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: .75rem;
  color: var(--acid);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
}
#stage-close {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font: 900 1rem/1 ui-monospace, monospace;
  width: 2.75rem;
  height: 2.75rem;
  cursor: pointer;
}
#stage-close:hover, #stage-close:focus-visible {
  background: var(--acid);
  color: #111;
  outline: none;
}
.site-stage {
  flex: 1;
  min-height: 0;
  border: 1px solid var(--line);
  background: #050604;
}
.site-stage iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}
.ledger {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 2rem 0;
}
.ledger div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1rem;
  background: var(--panel);
  padding: 1rem;
}
.ledger span { color: var(--muted); text-transform: uppercase; font-size: .7rem; }
.ledger code { overflow-wrap: anywhere; }
.primary {
  border: 0;
  background: var(--acid);
  color: #111;
  padding: 1rem 1.5rem;
  font: 900 1rem ui-monospace, monospace;
  text-transform: uppercase;
  cursor: pointer;
}
.primary:hover { background: #fff; }
.history { display: flex; gap: 1px; background: var(--line); margin-top: 1rem; }
.history div { background: var(--panel); padding: 1rem; display: grid; gap: .5rem; }
.history span { color: var(--acid); }
.tree {
  padding: 1.5rem;
  border-left: 3px solid var(--acid);
  background: var(--panel);
  display: grid;
  gap: 1rem;
}
.tree > a { font-weight: 900; }
.branch { margin-left: 1rem; color: var(--muted); }
footer {
  border-top: 1px solid var(--line);
  padding: 2rem clamp(1rem, 4vw, 4rem);
  color: var(--muted);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
}

@media (max-width: 800px) {
  .grid, .forest { grid-template-columns: 1fr; }
  .card { min-height: 12rem; }
  nav { gap: .7rem; overflow: auto; }
  .ledger div { grid-template-columns: 1fr; }
  main { padding-top: 3rem; }
  .cell { min-height: 7rem; padding: .75rem; gap: .15rem; }
  .cell .slot, .cell .score { font-size: .62rem; }
}