/* ==========================================================================
   Timeline Component — Visuele tijdlijn
   ========================================================================== */

.timeline {
  position: relative;
  padding-left: 2.5rem;
  margin: var(--space-xl) 0;
}

/* Vertical line */
.timeline::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

/* Dot on the line */
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.5rem;
  top: 0.35rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-primary);
  z-index: 1;
}

.timeline-item--highlight::before {
  background: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-item__date {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2xs);
}

.timeline-item--highlight .timeline-item__date {
  color: var(--color-accent);
}

.timeline-item__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.timeline-item__desc {
  color: var(--color-text-muted);
  line-height: var(--line-height-base);
}

/* Horizon section (after the main timeline) */
.horizon-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.horizon-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
}

.horizon-list .horizon-period {
  flex-shrink: 0;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  min-width: 8rem;
}

/* Checklist */
.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
}

.checklist li::before {
  content: '☐';
  flex-shrink: 0;
  color: var(--color-primary);
  font-size: 1.1em;
}