div:has(.timeline) {
  container-type: inline-size;
}

/* ── Container & center line ── */
.timeline {
  position: relative;
  margin: 2rem auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: currentColor;
  opacity: 0.2;
  transform: translateX(-50%);
}

/* ── Items ── */
.timeline-item {
  /* min-width: 320px; */
  max-width: 40%;
  width: fit-content;
  padding: 0;
  margin: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  position: relative;
  box-shadow: 4px 4px 4px black;
}

.timeline-title {
  color: #fff;
  background: var(--wp--preset--color--custom-purple);
  font-family: var(--wp--preset--font-family--nunito-sans);
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
  padding: 12px;
  margin: 0;
  font-size: 0.8rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-title.has-background {
  padding: 12px;
  margin: 0;
}

.timeline-description {
  padding: 12px;
  margin: 0;
  font-size: 0.7rem;
  font-weight: 400;
  line-height: 1.5;
  color: #fff;
}

.timeline-item:nth-child(n+1) {
  margin-top: 24px;
}

/* Year as the timeline dot */
.timeline-year {
  position: absolute !important;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: var(--wp--preset--color--custom-pink);
  color: #fff;
  display: flex !important;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--wp--preset--font-family--dancing-script);
  letter-spacing: 0.05em;
  text-align: center !important;
  margin: 0 !important;
  top: 1rem;
  padding: 0;
  box-shadow: 4px 4px 4px black
}


/* Stagger delay based on position */
.timeline-item:nth-child(2) { transition-delay: 0.1s; }
.timeline-item:nth-child(3) { transition-delay: 0.15s; }
.timeline-item:nth-child(4) { transition-delay: 0.2s; }

@container (min-inline-size: 701px) {
  /* Odd → left side */
  .timeline-item:nth-child(odd) {
    margin-right: auto;
    text-align: right;
    margin-left: 50%;
    transform: translateX(calc(-100% - 2.5rem));
  }
  .timeline-item:nth-child(odd)::before {
    right: -3rem;
  }

  /* Even → right side */
  .timeline-item:nth-child(even) {
    margin-left: auto;
    margin-right: 50%;
    transform: translateX(calc(100% + 2.5rem));
  }
  .timeline-item:nth-child(even)::before {
    left: -3rem;
  }

  .timeline-item:nth-child(odd) .timeline-year {
    right: 0;
    transform: translateX(calc(50% + 2.5rem));
  }

  .timeline-item:nth-child(even) .timeline-year {
    left: 0;
    transform: translateX(calc(-50% - 2.5rem));
  }

  /* ── Scroll animation ── */
  .timeline-js .timeline-item:nth-child(odd) {
    opacity: 0;
    transform: translateY(48px) translateX(calc(-100% - 2.5rem));
    transition: opacity 1s ease, transform 1s ease;
  }

  .timeline-js .timeline-item:nth-child(even) {
    opacity: 0;
    transform: translateY(48px) translateX(calc(100% + 2.5rem));
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .timeline-js .timeline-item.is-visible:nth-child(odd) {
    opacity: 1;
    transform: translateY(0) translateX(calc(-100% - 2.5rem));
  }
  .timeline-js .timeline-item.is-visible:nth-child(even) {
    opacity: 1;
    transform: translateY(0) translateX(calc(100% + 2.5rem));
  }
}

/* ── Mobile: single column ── */
@container (max-inline-size: 700px) {
  .timeline::before {
    left: 1.75rem;
  }

  .timeline-item {
    margin-left: 5rem !important;
    max-width: 100% !important;
  }

  .timeline-item .timeline-year {
    left: -5rem !important;
    right: auto !important;
  }

  /* ── Scroll animation ── */
  .timeline-js .timeline-item {
    opacity: 0;
    transform: translateY(48px);
    transition: opacity 1s ease, transform 1s ease;
  }

  .timeline-js .timeline-item.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}