.timeline-vertical {
  position: relative;
  /* Left rail that holds the vertical bar + dots */
  padding: 0.25rem 0 0.25rem 2.5rem;
}

/* Vertical bar on the LEFT, spanning the full (scrollable) content height */
.timeline-vertical::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--timeline-primary), rgba(37, 99, 235, 0.1));
  border-radius: 2px;
}

/* Cards: full width to the right of the bar, compact */
.timeline-vertical .timeline-vertical-card {
  position: relative;
  width: 100%;
  margin: 0 0 1rem 0;
  /* Override the roomy core padding for a more compact card */
  padding: 0.85rem 1rem;
  background: #ffffff;
  border: 1px solid var(--timeline-border);
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
  cursor: pointer;
}

.timeline-vertical .timeline-vertical-card:last-child {
  margin-bottom: 0;
}

/* Timeline dot, centered on the left bar */
.timeline-vertical .timeline-vertical-card::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--timeline-primary);
  border: 3px solid #ffffff;
  box-shadow: 0 0 0 3px var(--timeline-primary-soft);
  top: 1rem;
  left: -32px;
}

.timeline-vertical .timeline-vertical-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.1);
}

.timeline-vertical .timeline-vertical-card.is-active {
  border-color: var(--timeline-primary);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.18);
}

/* Card layout: image (+ link) on the left, text on the right */
.timeline-vertical .timeline-card-inner {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}

.timeline-vertical .timeline-card-body {
  flex: 1 1 auto;
  min-width: 0;
}

/* Left media column (teaser image + "learn more" link) */
.timeline-vertical .timeline-card-media {
  flex: 0 0 200px;
  max-width: 200px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.timeline-vertical .timeline-card-media img {
  display: block;
  width: 100%;
  height: 130px;
  object-fit: cover;
  border-radius: 8px;
}

.timeline-vertical .timeline-date {
  display: block;
  font-size: 0.8rem;
  color: var(--timeline-primary);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.timeline-vertical .timeline-card-title {
  margin: 0.1rem 0 0.35rem;
  font-size: 1.05rem;
  line-height: 1.3;
  font-weight: 700;
}

.timeline-vertical .timeline-card-authors {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--color-ink-muted, #5f5f5f);
}

.timeline-vertical .timeline-card-description {
  margin: 0 0 0.2rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Compact "learn more" link, kept small so it doesn't crowd the image */
.timeline-vertical .timeline-card-link {
  align-self: flex-start;
  display: inline-block;
  padding: 0.3rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--timeline-primary);
  border: 1px solid var(--timeline-primary);
  border-radius: 6px;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.timeline-vertical .timeline-card-link:hover {
  background: var(--timeline-primary);
  color: #ffffff;
}

/* Items without an image: link sits under the text body */
.timeline-vertical .timeline-card-body > .timeline-card-link {
  margin-top: 0.4rem;
}

@media (max-width: 768px) {
  .timeline-vertical {
    padding-left: 2.25rem;
  }

  .timeline-vertical .timeline-vertical-card::after {
    left: -30px;
  }

  /* Stack image above text on narrow screens */
  .timeline-vertical .timeline-card-inner {
    flex-direction: column;
    gap: 0.75rem;
  }

  .timeline-vertical .timeline-card-media {
    flex-basis: auto;
    max-width: none;
  }

  .timeline-vertical .timeline-card-media img {
    height: 160px;
  }
}