.timeline {
  background: var(--color-bg);
}

.timeline > .container {
  text-align: center;
  margin-bottom: var(--space-xl);
}

/* Track */
.timeline__track {
  position: relative;
  max-width: 900px;
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Línea SVG central */
.timeline__svg {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 100%;
  overflow: visible;
}

.timeline__svg-line {
  stroke: var(--color-gold-dim);
  stroke-width: 1;
  stroke-dasharray: 4000;
  stroke-dashoffset: 4000; /* GSAP lo anima a 0 */
}

/* Items */
.timeline__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding-block: var(--space-md);
}

.timeline__item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: start;
  position: relative;
}

.timeline__item--left .timeline__card {
  grid-column: 1;
  text-align: right;
}

.timeline__item--left .timeline__dot {
  grid-column: 2;
}

.timeline__item--right .timeline__dot {
  grid-column: 2;
}

.timeline__item--right .timeline__card {
  grid-column: 3;
  text-align: left;
}

/* Punto central */
.timeline__dot {
  width: 12px;
  height: 12px;
  border: 1px solid var(--color-gold);
  border-radius: 50%;
  background: var(--color-bg);
  margin-top: 0.4rem;
  position: relative;
  flex-shrink: 0;
  transition: background var(--duration-base) ease;
}

.timeline__dot::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--color-gold-dim);
  opacity: 0;
  transition: opacity var(--duration-base) ease;
}

.timeline__item:hover .timeline__dot {
  background: var(--color-gold);
}

.timeline__item:hover .timeline__dot::before {
  opacity: 1;
}

/* Card */
.timeline__card {
  padding: 1.5rem;
  border: 1px solid transparent;
  transition: border-color var(--duration-base) ease,
              background var(--duration-base) ease;
}

.timeline__item:hover .timeline__card {
  border-color: var(--color-border);
  background: var(--color-surface);
}

.timeline__year {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.timeline__event {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: 0.5rem;
  font-weight: 400;
}

.timeline__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

@media (max-width: 640px) {
  .timeline__item {
    grid-template-columns: auto 1fr;
    gap: 1.25rem;
  }

  .timeline__item--left .timeline__card,
  .timeline__item--right .timeline__card {
    grid-column: 2;
    text-align: left;
  }

  .timeline__item--left .timeline__dot,
  .timeline__item--right .timeline__dot {
    grid-column: 1;
  }

  .timeline__svg { display: none; }
}