:root {
  --ink: #241f31;
  --paper: #fdf6e3;
  --panel: #fffdf7;
  --line: #e0d7c2;
  --muted: #7d7387;
  --accent: #d96f4f;
  --good: #3f9e5a;
  --bad: #c1503c;
  --shadow: 0 2px 0 var(--line);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.5 "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
}

h1, h2, h3 { font-weight: 800; letter-spacing: -0.01em; margin: 0; }

button {
  font: inherit;
  font-weight: 700;
  color: var(--ink);
  background: var(--panel);
  border: 2.5px solid var(--ink);
  border-radius: 9px;
  padding: 7px 14px;
  cursor: pointer;
  box-shadow: 0 3px 0 var(--ink);
}
button:hover:not(:disabled) { transform: translateY(1px); box-shadow: 0 2px 0 var(--ink); }
button:active:not(:disabled) { transform: translateY(3px); box-shadow: none; }
button:disabled { opacity: 0.35; cursor: not-allowed; box-shadow: 0 3px 0 var(--line); }
button.primary { background: var(--accent); color: #fff; }

/* ---------------------------------------------------------------- welcome */

.welcome {
  max-width: 620px;
  margin: 0 auto;
  padding: 72px 24px;
  text-align: center;
}
.welcome h1 { font-size: 52px; line-height: 1.05; margin-bottom: 10px; }
.welcome p { color: var(--muted); font-size: 17px; }
.welcome .cast { display: flex; justify-content: center; gap: 14px; margin: 34px 0; }
.welcome .cast svg { width: 74px; height: 74px; }
.welcome .lede { font-size: 20px; font-weight: 700; color: var(--ink); margin-bottom: 0; }
.welcome p + p { margin-top: 14px; }
.welcome button { margin-top: 12px; }
.welcome .credit {
  margin-top: 30px; padding-top: 18px; border-top: 2px solid var(--line);
  font-size: 12.5px; line-height: 1.55;
}
.welcome .credit a { color: var(--accent); }
.welcome .credit br { content: ""; display: block; margin-top: 6px; }

/* ------------------------------------------------------------------- game */

.game { display: none; padding: 14px 22px 34px; max-width: 1220px; margin: 0 auto; }
body.playing .game { display: block; }
body.playing .welcome { display: none; }

.topbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding-bottom: 14px; margin-bottom: 18px; border-bottom: 2.5px solid var(--ink);
}
.topbar h1 { font-size: 24px; }
.topbar .meta { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.topbar .controls { margin-left: auto; display: flex; gap: 8px; }

.banner {
  display: none; margin-bottom: 16px; padding: 10px 14px;
  border: 2.5px solid var(--ink); border-radius: 10px;
  background: #ffe9c9; font-weight: 700;
}
.banner.show { display: block; }
.banner.done { background: #d9f2df; }
/* A refused action is a different kind of message from the state of the session,
   so it gets its own line rather than overwriting it. */
.banner.notice { background: #ffdcd2; font-weight: 600; font-size: 13.5px; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 20px; }
@media (max-width: 980px) { .layout { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel);
  border: 2.5px solid var(--ink);
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 16px;
}
.panel > h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 12px; }

/* ----------------------------------------------------------------- system */

/* The diagram makes one claim: everything hangs off a single gate. A sequencer at
   the top, one bus, and every component -- injector, both halves of all four
   players, tracker -- dropping onto it. Nothing talks to anything else. */

.system-panel { padding-bottom: 8px; }
.hub { display: flex; justify-content: center; }

.sequencer {
  text-align: center; padding: 8px 22px;
  border: 3px solid var(--ink); border-radius: 13px; background: #efe7fb;
  box-shadow: var(--shadow); min-width: 150px;
}
.sequencer .title { font-weight: 800; font-size: 13px; }
.sequencer .sub { font-size: 10.5px; color: var(--muted); }
.sequencer .seq { font-size: 26px; font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1.1; }
.sequencer .pulse { height: 5px; border-radius: 3px; background: var(--line); margin-top: 7px; transition: background 120ms; }
.sequencer.tick .pulse { background: var(--accent); }

.drop { width: 3px; height: 14px; background: var(--ink); margin: 0 auto; }
.bus { height: 3px; background: var(--ink); border-radius: 2px; }

.nodes {
  display: grid;
  grid-template-columns: minmax(96px, 0.62fr) repeat(4, minmax(0, 1fr)) minmax(96px, 0.62fr);
  gap: 8px;
  align-items: start;
}
.node { position: relative; padding-top: 15px; }
/* The stub that ties each component to the bus. */
.node::before {
  content: ""; position: absolute; top: 0; left: 50%; margin-left: -1.5px;
  width: 3px; height: 15px; background: var(--ink);
}

.node .box {
  border: 2.5px dashed var(--ink); border-radius: 11px;
  padding: 10px 8px; background: #fff; text-align: center;
}
.node .box .name { font-weight: 800; font-size: 12px; }
.node .box .sub { font-size: 10px; color: var(--muted); line-height: 1.25; }

/* A player is one box with two replicas inside it: four players, not eight. */
.pair { border: 2.5px solid var(--ink); border-radius: 12px; background: #fff; overflow: hidden; }
/* Both participants light up for the whole game rather than the highlight
   hopping from one to the other as each takes its turn. The turn order is a
   detail of how a game is recorded; who is playing is the thing worth seeing. */
.pair.playing { background: #fff4e0; box-shadow: 0 0 0 2px var(--accent); }
.pair.playing .pair-head { background: #ffeccd; }
.pair-head {
  padding: 5px 6px 4px; text-align: center;
  border-bottom: 2px solid var(--line); background: #faf6ef;
}
.pair-head .name { font-weight: 800; font-size: 12.5px; }
/* What a player does, and underneath it what it reads -- which is what it costs.
   Same treatment as every other label on the diagram: a name in ink, its
   explanation in grey underneath. A player is a node on the bus like the injector
   and the tracker are, so it should not be shouting where they murmur. */
.pair-head .does,
.pair-head .sub { font-size: 10px; color: var(--muted); line-height: 1.25; }
.pair-body { display: grid; grid-template-columns: 1fr 1fr; }
.pair-body .replica + .replica { border-left: 2px dashed var(--line); }

.replica { padding: 6px 3px 7px; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.replica.gone { background: #f4f1f4; }

.face { width: 40px; height: 40px; display: block; transition: opacity 150ms; }
/* An idle replica is alive but not in this game: translucent, not greyed out. */
.face-idle { opacity: 0.3; }
.face-awake { opacity: 1; }
.face-gone { opacity: 0.7; }

.replica .tag { font-size: 9.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.replica .state { font-size: 8.5px; font-weight: 800; text-transform: uppercase; min-height: 11px; color: var(--bad); }
.replica .buttons { display: flex; gap: 2px; margin-top: 2px; }
.replica .buttons button {
  padding: 2px 4px; font-size: 9px; border-width: 2px; border-radius: 5px;
  box-shadow: 0 2px 0 var(--ink);
}

.caption {
  text-align: center; font-size: 11.5px; color: var(--muted);
  margin: 12px auto 4px; max-width: 560px; line-height: 1.4;
}

/* ------------------------------------------------------------------ table */

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th {
  text-align: left; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); padding: 0 6px 6px; border-bottom: 2px solid var(--line);
}
td { padding: 5px 6px; border-bottom: 1px solid var(--line); font-size: 13px; }

.games { max-height: 250px; overflow-y: auto; }
tr.live td { background: #fff4e0; }
tr.fresh td { background: #fdf0d8; }
.pending { color: var(--line); }
.cooperate { color: var(--good); font-weight: 700; }
.cheat { color: var(--bad); font-weight: 700; }
.delta { font-weight: 700; }

.board td:first-child { font-weight: 700; }
.board .score { text-align: right; font-weight: 800; }
.board .bar { width: 46%; }
.board .bar div { height: 9px; border-radius: 5px; background: var(--accent); border: 2px solid var(--ink); min-width: 3px; transition: width 200ms; }

.log { max-height: 420px; overflow-y: auto; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11.5px; }
.log div { padding: 2px 0; border-bottom: 1px solid var(--line); display: flex; gap: 8px; }
.log .s { color: var(--muted); min-width: 30px; }
.log .r { color: var(--muted); min-width: 74px; }

footer { margin-top: 26px; padding-top: 14px; border-top: 2px solid var(--line); font-size: 12px; color: var(--muted); }
footer a { color: var(--accent); }