/**
 * CSS Niveau 3 — Modale Time-Machine (time-machine.css)
 */
.time-machine-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-height: 480px;
  overflow-y: auto;
  padding-right: var(--space-2);
}

.tm-checkpoint-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  transition: all var(--transition-fast);
}

.tm-checkpoint-card:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-brand-blue);
}

.tm-time-pill {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-primary);
  font-weight: 600;
}

.tm-rel-pill {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.15);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}