:root {
  --bg: #f6f7f9; --fg: #15171a; --muted: #69707a; --card: #fff; --line: #dde1e6;
  --accent: #1f5eff; --err: #c62828; --stage: #000;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111317; --fg: #e8eaed; --muted: #9aa1ab; --card: #1a1d22; --line: #2c3139; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; } /* #login/#lab set display, which would override the hidden attribute */
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--fg); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
.mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--err); min-height: 1.2em; }
button { font: inherit; padding: 8px 14px; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; }
button.ghost { background: transparent; color: var(--fg); border-color: var(--line); }
input { font: inherit; width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--fg); }

#login { min-height: 100%; display: grid; place-items: center; padding: 16px; }
.card { width: min(360px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; display: grid; gap: 12px; }
.card h1 { margin: 0 0 4px; font-size: 20px; }
.card label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }

#lab { height: 100%; display: flex; flex-direction: column; }
header { display: flex; align-items: center; gap: 12px; padding: 8px 16px; border-bottom: 1px solid var(--line); background: var(--card); }
.spacer { flex: 1; }
.badge { font-size: 12px; padding: 2px 8px; border-radius: 99px; border: 1px solid var(--line); color: var(--muted); }

.split { flex: 1; display: grid; grid-template-columns: 1fr 1fr; min-height: 0; }
.stage { background: var(--stage); color: #fff; display: grid; place-items: center; }
.stage .placeholder { text-align: center; }
.stage .muted { color: #8a8f98; }
#timecode { font-size: 28px; }
.console { display: flex; flex-direction: column; gap: 12px; padding: 12px; overflow: auto; border-left: 1px solid var(--line); }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 12px; }
.panel.grow { flex: 1; min-height: 160px; display: flex; flex-direction: column; }
.panel h2 { margin: 0 0 8px; font-size: 14px; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; }
button.small { padding: 0 8px; font-size: 12px; margin-left: 6px; }
#experiments { width: 100%; border-collapse: collapse; font-size: 12px; }
#experiments td { padding: 4px 6px 4px 0; border-bottom: 1px dashed var(--line); vertical-align: top; }
#experiments a { color: var(--accent); }
#events { list-style: none; margin: 0; padding: 0; font-size: 12px; overflow: auto; flex: 1; }
#events li { padding: 2px 0; border-bottom: 1px dashed var(--line); word-break: break-all; }

@media (max-width: 760px) {
  .split { grid-template-columns: 1fr; grid-template-rows: 50vh auto; }
  .console { border-left: 0; border-top: 1px solid var(--line); }
}