/* Viettinpay Timeline */

.vtp-timeline {
  --vtp-text: #ffffff;
  --vtp-accent: #b3f6a1;
  --vtp-line: var(--vtp-accent);
  --vtp-dot: var(--vtp-accent);
  --vtp-dot-size: 12px;
  --vtp-line-thickness: 2px;
  --vtp-row-height: 220px;
  --vtp-gap: 16px;
  --vtp-min-track: 1360px;

  width: 100%;
  max-width: var(--vtp-max-width, 1520px);
  margin: 0 auto;
  color: var(--vtp-text);
  box-sizing: border-box;
}

.vtp-timeline *,
.vtp-timeline *::before,
.vtp-timeline *::after {
  box-sizing: border-box;
}

.vtp-timeline__viewport {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding-left: 8px;
  padding-right: 32px;
  scroll-padding-left: 8px;
  scroll-padding-right: 32px;
}

.vtp-timeline__viewport::-webkit-scrollbar {
  display: none;
}

.vtp-timeline__viewport.is-scrollable {
  cursor: grab;
}

.vtp-timeline__viewport.is-grabbing {
  cursor: grabbing;
  user-select: none;
}

.vtp-timeline__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--vtp-count, 1), minmax(0, 1fr));
  grid-template-rows: var(--vtp-row-height) var(--vtp-row-height);
  column-gap: var(--vtp-gap);
  min-width: var(--vtp-min-track);
}

.vtp-timeline__line {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: var(--vtp-line-thickness);
  background: var(--vtp-line);
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 0;
}

.vtp-timeline__line::after {
  content: "";
  position: absolute;
  right: -13px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 14px solid var(--vtp-accent);
}

.vtp-timeline__item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  z-index: 1;
  min-width: 0;
}

.vtp-timeline__item--top {
  justify-content: flex-end;
}

.vtp-timeline__item--bottom {
  justify-content: flex-start;
}

.vtp-timeline__dot {
  width: var(--vtp-dot-size);
  height: var(--vtp-dot-size);
  border-radius: 50%;
  background: var(--vtp-dot);
  margin-left: calc(var(--vtp-dot-size) / -2);
  flex-shrink: 0;
}

.vtp-timeline__item--top .vtp-timeline__dot {
  margin-bottom: calc(var(--vtp-dot-size) / -2);
}

.vtp-timeline__item--bottom .vtp-timeline__dot {
  margin-top: calc(var(--vtp-dot-size) / -2);
}

.vtp-timeline__year {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--vtp-accent);
  margin: 0;
}

/* Top item: content -> year (gap 32) -> dot (gap 8) */
.vtp-timeline__item--top .vtp-timeline__content {
  margin-bottom: 32px;
  margin-top: auto;
}

.vtp-timeline__item--top .vtp-timeline__year {
  margin-bottom: 8px;
}

/* Bottom item: dot (gap 8) -> year (gap 32) -> content */
.vtp-timeline__item--bottom .vtp-timeline__dot {
  margin-bottom: 8px;
}

.vtp-timeline__item--bottom .vtp-timeline__year {
  margin-bottom: 32px;
}

.vtp-timeline__content {
  width: 100%;
  padding-right: 16px;
}

.vtp-timeline__title {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 12px 0;
  color: var(--vtp-text);
}

.vtp-timeline__desc {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--vtp-text);
  opacity: 0.8;
  margin: 0;
}

.vtp-timeline__desc p {
  margin: 0 0 6px 0;
}

.vtp-timeline__desc p:last-child {
  margin-bottom: 0;
}

.vtp-timeline__progress {
  display: none;
}

/* Khi viewport < 1360px: hiện progress bar, scroll tự do */
@media (max-width: 1359px) {
  .vtp-timeline__progress {
    display: block;
    position: relative;
    height: 2px;
    background: rgba(255, 255, 255, 0.15);
    margin: 40px 0 0;
    border-radius: 2px;
    overflow: hidden;
  }

  .vtp-timeline__progress-bar {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 30%;
    background: var(--vtp-accent);
    border-radius: 2px;
    transition:
      left 0.18s ease,
      width 0.18s ease;
  }
}

/* Mobile thực sự: snap nhẹ để vuốt theo cặp (proximity, không khoá cứng) */
@media (max-width: 768px) {
  .vtp-timeline__viewport {
    scroll-snap-type: x proximity;
  }

  .vtp-timeline__item--bottom {
    scroll-snap-align: start;
  }
}