:root {
  --bg: #ffffff; --fg: #1d2330; --muted: #5d6677; --panel: #f4f6f9; --line: #d5dae2;
  --accent: #2f5fb3; --ok: #3b6e47; --bad: #9b3434; --card: #ffffff;
  --warn-bg: #fff6e0; --warn-fg: #6b4e00; --lead: #b07d10; --head: #e8ecf2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1729; --fg: #e3e8f1; --muted: #9aa5b8; --panel: #18223a; --line: #2c3854;
    --accent: #7aa2f7; --ok: #6cbf84; --bad: #e07a7a; --card: #121b30;
    --warn-bg: #3a3014; --warn-fg: #f2d68a; --lead: #e0b030; --head: #1f2a44;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { padding: 16px; border-bottom: 1px solid var(--line); }
header h1 { margin: 0 0 4px; font-size: 1.3rem; }
header a { color: var(--accent); }
.notice { background: var(--warn-bg); color: var(--warn-fg); padding: 8px 12px; border-radius: 6px;
  margin-top: 8px; font-size: 0.9rem; }
main { padding: 16px; }
section { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px;
  margin-bottom: 16px; min-width: 0; }
section h2 { margin: 0 0 8px; font-size: 1rem; }
label { display: inline-flex; flex-direction: column; font-size: 0.8rem; color: var(--muted); margin: 0 8px 8px 0; }
label.inline { flex-direction: row; align-items: center; gap: 4px; margin: 0; }
input, select, button { font: inherit; color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 5px; padding: 4px 6px; }
input[type=number] { width: 90px; }
button { cursor: pointer; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
.muted { color: var(--muted); }
.row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 4px; }
[hidden] { display: none !important; }

/* The acts. */
.acts { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.act { border-radius: 16px; padding: 3px 12px; }
.act.on { background: var(--accent); color: #fff; border-color: var(--accent); }

/* The stage: the cell, the outside world, and the wires over both. */
.stage-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 12px; }
.stage { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 90px; gap: 12px;
  min-height: 300px; }
.stage canvas { position: absolute; inset: 0; pointer-events: none; z-index: 2; }
.cell { border: 2px dashed var(--line); border-radius: 10px; padding: 8px; }
.cell-name { font-size: 0.8rem; color: var(--muted); margin-bottom: 4px; }
.zones { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.zone { display: flex; flex-direction: column; gap: 10px; }
.zone-name { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted);
  border-bottom: 1px solid var(--line); }
.machine { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 6px;
  display: flex; flex-direction: column; gap: 3px; min-height: 52px; }
.machine.idle { opacity: 0.55; }
.machine-head { display: flex; justify-content: space-between; align-items: baseline; }
.machine-head small { color: var(--muted); font-family: ui-monospace, monospace; font-size: 0.7rem; }
.chip { display: flex; align-items: center; gap: 5px; font-size: 0.75rem; padding: 1px 5px;
  border: 1px solid var(--line); border-left: 4px solid var(--tenant); border-radius: 4px; text-align: left;
  background: var(--bg); }
.chip i { margin-left: auto; font-style: normal; font-weight: 700; color: var(--muted); }
.chip.lead { border-color: var(--tenant); font-weight: 600; }
.chip.lead i { color: var(--tenant); }
.chip.internal { color: var(--muted); }
.chip.selected { outline: 2px solid var(--accent); }
.chip.new { animation: pop 0.6s ease-out; }
@keyframes pop { 0% { transform: scale(0.3); opacity: 0; } 70% { transform: scale(1.12); } 100% { transform: scale(1); } }
.swatch { display: inline-block; width: 9px; height: 9px; border-radius: 2px; background: var(--tenant); }
.chip .swatch { display: none; }
.sets-row { display: flex; align-items: center; gap: 3px; font-size: 0.7rem; color: var(--muted); }
.mm { font-size: 0.75rem; }
.outside { display: flex; align-items: center; justify-content: center; }
.client { border: 2px solid var(--fg); border-radius: 20px; padding: 6px 10px; font-size: 0.8rem;
  background: var(--card); }
.client.busy { box-shadow: 0 0 0 4px var(--head); }

/* The rail: the followed journal. */
.rail { background: var(--card); border: 1px solid var(--line); border-top: 4px solid var(--tenant, var(--line));
  border-radius: 8px; padding: 10px; font-size: 0.85rem; }
.rail h3 { margin: 0 0 4px; font-size: 1rem; display: flex; align-items: center; gap: 6px; }
.rail p { margin: 6px 0; }
.grid { display: grid; gap: 4px; align-items: center; }
.axis { font-size: 0.7rem; color: var(--muted); text-align: center; }
.axis.lit { color: var(--fg); font-weight: 700; }
.majority { display: flex; flex-wrap: wrap; gap: 4px; }
.acceptor { display: inline-block; text-align: center; padding: 4px 6px; border: 1px solid var(--line);
  border-radius: 5px; font-family: ui-monospace, monospace; font-size: 0.8rem; }
.acceptor.lead { font-weight: 700; border-color: var(--lead); }
.acceptor.asked { border: 2px solid var(--tenant); }
.acceptor.yes { background: var(--tenant); color: #fff; }
.round { font-family: ui-monospace, monospace; font-size: 0.75rem; }
.logbar { display: flex; flex-wrap: wrap; gap: 2px; }
.logbar span { width: 10px; height: 10px; background: var(--tenant); border-radius: 2px; animation: pop 0.4s; }

.caption { min-height: 3em; margin: 10px 0; font-size: 0.95rem; }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.time { font-family: ui-monospace, monospace; font-size: 0.8rem; color: var(--muted); }
.legend { display: flex; flex-wrap: wrap; gap: 10px; font-size: 0.8rem; color: var(--muted); }
.legend .key { display: inline-flex; align-items: center; gap: 4px; }
.timeline { width: 100%; height: 64px; margin-top: 8px; cursor: ew-resize; touch-action: none;
  border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }

/* Below: the editor and the events. */
.lower { display: grid; grid-template-columns: 420px minmax(0, 1fr); gap: 16px; }
ol.actions { padding-left: 22px; margin: 8px 0; font-size: 0.9rem; }
ol.actions li { margin: 2px 0; }
ol.actions .ok { color: var(--ok); } ol.actions .bad { color: var(--bad); }
ol.actions button { padding: 0 6px; margin-left: 4px; }
ol.actions input { width: 56px; padding: 0 4px; }
.log { max-height: 360px; overflow: auto; font: 12px/1.4 ui-monospace, monospace; white-space: pre; }

@media (max-width: 900px) {
  .stage-wrap, .lower { grid-template-columns: 1fr; }
  .stage { grid-template-columns: 1fr; }
  .outside { justify-content: flex-start; }
}