/* RC50 center-column timeline: compact groups, intrinsic controls, no rail overlap. */
.sim-wb-timeline {
  position: relative;
  z-index: 2;
  min-width: 0;
  padding: .55rem .7rem .62rem;
  color: var(--sim-text);
  background: #07151d;
  border-top: 1px solid var(--sim-line);
  border-bottom: 0;
  overflow: hidden;
}
.sim-wb-timeline-toolbar {
  min-width: 0;
  display: grid;
  grid-template-columns: auto minmax(15rem, 1fr) auto auto;
  gap: .55rem;
  align-items: end;
}
.sim-wb-timeline-group {
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .32rem;
}
.sim-wb-group-label,
.sim-wb-speed-control > span {
  flex: 0 0 100%;
  color: var(--sim-muted);
  font: 800 .68rem/1.2 var(--font-mono, var(--mono, ui-monospace, monospace));
  text-transform: uppercase;
  letter-spacing: .06em;
}
.sim-wb-timeline button,
.sim-wb-speed-control select {
  width: auto !important;
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: .48rem .62rem;
  border-radius: var(--sim-radius);
  color: var(--sim-text);
  background: var(--sim-control-bg);
  border: 1px solid var(--sim-line-strong);
  font: 800 .72rem/1.2 var(--font-mono, var(--mono, ui-monospace, monospace));
}
.sim-wb-timeline button:hover,
.sim-wb-speed-control select:hover { background: var(--sim-control-hover); border-color: var(--sim-cyan); }
.sim-wb-timeline-transport button { display: inline-flex; gap: .35rem; align-items: center; justify-content: center; }
.sim-wb-timeline-evidence { align-content: end; }
.sim-wb-timeline-evidence button { flex: 1 1 7rem; }
.sim-wb-timeline-state { align-content: end; }
.sim-wb-timeline-readout {
  flex: 1 1 10rem;
  margin: 0;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  padding: .5rem .62rem;
  color: var(--sim-body);
  background: #091c25;
  border: 1px solid var(--sim-line);
  font-size: .72rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sim-wb-speed-control {
  width: auto;
  min-width: 5rem;
  display: grid;
  gap: .25rem;
}
.sim-wb-speed-control select { min-width: 5rem; }
.sim-wb-timeline-track { margin-top: .55rem; padding: 0 .2rem; }
.sim-wb-timeline-track input[type="range"] {
  width: 100%;
  min-height: 2rem;
  accent-color: var(--sim-cyan);
  cursor: pointer;
}
.sim-wb-event-markers { pointer-events: none; }
.sim-wb-event-legend {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .9rem;
  margin-top: .25rem;
  color: var(--sim-muted);
  font: 700 .68rem/1.3 var(--font-mono, var(--mono, ui-monospace, monospace));
}
.sim-wb-event-legend span::before {
  content: "";
  display: inline-block;
  width: .55rem;
  height: .55rem;
  margin-right: .3rem;
  border-radius: 50%;
  background: var(--sim-cyan);
}
.sim-wb-event-legend [data-marker-kind="proof-change"]::before { background: var(--sim-amber); }
.sim-wb-event-legend [data-marker-kind="failure"]::before { background: var(--sim-red); }
.sim-wb-event-legend [data-marker-kind="recovery"]::before { background: var(--sim-green); }
.sim-wb-timeline-event {
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: .65rem;
  padding-top: .35rem;
  font-size: .75rem;
  line-height: 1.35;
}
.sim-wb-timeline-event :where(time, strong, span) { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }