.octimeline {
  --oct-navy: #1a3a52;
  --oct-mid: #d9e0e6;
  --oct-light: #f5f7f9;
  --oct-text: #192026;
  --oct-track-bg: linear-gradient(90deg, #f5f7f9 0%, #ffffff 55%, #f5f7f9 100%);
  --oct-card-bg: #ffffff;
  --oct-tag-color: rgba(26, 58, 82, 0.8);
  --oct-popup-bg: #ffffff;
  --oct-popup-text: #4a5560;
  --oct-shadow-color: rgba(15, 26, 35, 0.08);
  --oct-shadow-color-hover: rgba(15, 26, 35, 0.12);
  --oct-title-size: 18px;
  --oct-title-size-compact: 15px;
  --oct-year-size: 14px;
  --oct-tag-size: 12px;
  --oct-popup-size: 12px;
  --oct-subdate-size: 11px;
  --oct-compact-size: 13px;
  --oct-card-radius: 12px;
  --oct-popup-radius: 10px;
  --oct-card-min-width: 220px;
  --oct-card-max-width: 260px;
  --oct-popup-width: 320px;
  --oct-popup-offset: 12px;
  --oct-track-height: auto;
  --oct-line-position: 34px;
  font-family: inherit;
  position: relative;
  width: 100%;
  padding: 16px 0 12px;
}

.octimeline,
.octimeline * {
  box-sizing: border-box;
}

.octimeline--vertical {
  --oct-vertical-spine: 72px;
  --oct-vertical-spine-half: 36px;
  --oct-vertical-gap: 28px;
  --oct-vertical-line-width: 4px;
  --oct-vertical-connector: calc(var(--oct-vertical-gap) + var(--oct-vertical-spine-half) - (var(--oct-vertical-line-width) / 2));
  --oct-dot-size: 18px;
  --oct-dot-border: 3px;
  position: relative;
}

.octimeline--vertical .octimeline-track {
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: stretch;
  padding: 18px 18px 28px;
  overflow: visible;
  cursor: default;
  touch-action: auto;
  scroll-snap-type: none;
  scroll-behavior: auto;
  background: linear-gradient(180deg, rgba(26, 58, 82, 0.04) 0%, rgba(26, 58, 82, 0.01) 100%), var(--oct-track-bg);
  border-radius: 20px;
  border: 1px solid rgba(26, 58, 82, 0.08);
}

.octimeline--vertical .octimeline-track::before {
  left: 50%;
  right: auto;
  top: 0;
  bottom: 0;
  width: var(--oct-vertical-line-width);
  height: auto;
  background: var(--oct-mid);
  opacity: 0.9;
  box-shadow: 0 0 0 1px rgba(26, 58, 82, 0.08);
  transform: translateX(-50%);
}

.octimeline--vertical .octimeline-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--oct-vertical-spine) minmax(0, 1fr);
  column-gap: var(--oct-vertical-gap);
  align-items: start;
  padding: 6px 0;
  width: 100%;
}

.octimeline--vertical .octimeline-row-line {
  grid-column: 2;
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.octimeline--vertical .octimeline-row-dot {
  position: absolute;
  top: 20px;
  left: 50%;
  width: var(--oct-dot-size);
  height: var(--oct-dot-size);
  border-radius: 50%;
  background: var(--oct-card-bg);
  border: var(--oct-dot-border) solid var(--oct-navy);
  box-shadow: 0 10px 20px rgba(26, 58, 82, 0.18);
  transition: transform 0.2s ease;
}

.octimeline--vertical .octimeline-row-dot::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--oct-navy);
}

.octimeline--vertical .octimeline-row--left .octimeline-item {
  grid-column: 1;
  justify-self: end;
}

.octimeline--vertical .octimeline-row--right .octimeline-item {
  grid-column: 3;
  justify-self: start;
}

.octimeline--vertical .octimeline-row--left .octimeline-row-dot {
  transform: translateX(calc(-50% - (var(--oct-vertical-line-width) / 2) - (var(--oct-dot-size) / 2)));
}

.octimeline--vertical .octimeline-row--right .octimeline-row-dot {
  transform: translateX(calc(-50% + (var(--oct-vertical-line-width) / 2) + (var(--oct-dot-size) / 2)));
}

.octimeline--vertical .octimeline-item {
  min-width: 0;
  max-width: calc(var(--oct-card-max-width) + var(--oct-card-max-width));
  width: 100%;
  scroll-snap-align: none;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
  box-shadow: 0 18px 36px var(--oct-shadow-color);
}

.octimeline--vertical .octimeline-dot {
  display: none;
}

.octimeline--vertical .octimeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  border-radius: var(--oct-card-radius) var(--oct-card-radius) 0 0;
  background: linear-gradient(90deg, var(--oct-navy), rgba(26, 58, 82, 0.15));
}

.octimeline--vertical .octimeline-item::after {
  content: "";
  position: absolute;
  top: 28px;
  height: 2px;
  width: var(--oct-vertical-connector);
  background: linear-gradient(90deg, var(--oct-mid), rgba(26, 58, 82, 0.08));
  pointer-events: none;
}

.octimeline--vertical .octimeline-row--left .octimeline-item::after {
  right: calc(0px - var(--oct-vertical-connector));
}

.octimeline--vertical .octimeline-row--right .octimeline-item::after {
  left: calc(0px - var(--oct-vertical-connector));
  background: linear-gradient(90deg, rgba(26, 58, 82, 0.08), var(--oct-mid));
}

.octimeline--vertical .octimeline-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 46px var(--oct-shadow-color-hover);
}

.octimeline--vertical .octimeline-year {
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: calc(var(--oct-year-size) + 1px);
}

.octimeline--vertical .octimeline-title {
  font-size: calc(var(--oct-title-size) + 2px);
}

.octimeline-track {
  position: relative;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  overflow-x: auto;
  overflow-y: visible;
  width: 100%;
  min-height: var(--oct-track-height);
  height: auto;
  padding: calc(var(--oct-line-position) + 6px) 18px 28px;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scroll-padding: 0 18px;
  border-radius: 16px;
  background: var(--oct-track-bg);
  cursor: grab;
  touch-action: pan-y;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--oct-mid) transparent;
}

.octimeline-track.is-grabbing {
  cursor: grabbing;
}

.octimeline-track:focus {
  outline: 2px solid rgba(26, 58, 82, 0.4);
  outline-offset: 4px;
}

.octimeline-track::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: var(--oct-line-position);
  height: 2px;
  background: var(--oct-mid);
}

.octimeline-track::-webkit-scrollbar {
  height: 8px;
}

.octimeline-track::-webkit-scrollbar-thumb {
  background: var(--oct-mid);
  border-radius: 999px;
}

.octimeline-item {
  position: relative;
  min-width: var(--oct-card-min-width);
  max-width: var(--oct-card-max-width);
  padding: 22px 18px 20px;
  background: var(--oct-card-bg);
  border: 1px solid var(--oct-mid);
  border-radius: var(--oct-card-radius);
  box-shadow: 0 10px 22px var(--oct-shadow-color);
  color: var(--oct-text);
  text-decoration: none;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.octimeline-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px var(--oct-shadow-color-hover);
}

.octimeline-item:focus-visible {
  outline: 3px solid rgba(26, 58, 82, 0.35);
  outline-offset: 3px;
}

.octimeline-dot {
  position: absolute;
  top: -12px;
  left: 22px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--oct-navy);
  box-shadow: 0 0 0 6px rgba(26, 58, 82, 0.18);
}

.octimeline-year {
  font-weight: 700;
  color: var(--oct-navy);
  letter-spacing: 0.4px;
  font-size: var(--oct-year-size);
}

.octimeline-title {
  margin: 6px 0 8px;
  font-size: var(--oct-title-size);
  line-height: 1.3;
}

.octimeline-image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 10px 0 8px;
  display: block;
}

.octimeline-tags {
  font-size: var(--oct-tag-size);
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--oct-tag-color);
  margin-top: 8px;
  pointer-events: none;
}

.octimeline-hover {
  position: absolute;
  left: 50%;
  bottom: calc(100% + var(--oct-popup-offset));
  width: var(--oct-popup-width);
  max-width: 90vw;
  background: var(--oct-popup-bg);
  border: 1px solid var(--oct-mid);
  border-radius: var(--oct-popup-radius);
  padding: 12px;
  font-size: var(--oct-popup-size);
  line-height: 1.4;
  color: var(--oct-popup-text);
  box-shadow: 0 12px 24px var(--oct-shadow-color-hover);
  opacity: 0;
  transform: translate(-50%, 6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  overflow: visible;
  max-height: none;
}

.octimeline-item:hover .octimeline-hover,
.octimeline-item:focus-visible .octimeline-hover {
  opacity: 1;
  transform: translate(-50%, 0);
}

.octimeline[data-popup-align="left"] .octimeline-hover {
  left: 0;
  transform: translate(0, 6px);
}

.octimeline[data-popup-align="left"] .octimeline-item:hover .octimeline-hover,
.octimeline[data-popup-align="left"] .octimeline-item:focus-visible .octimeline-hover {
  transform: translate(0, 0);
}

.octimeline[data-popup-align="right"] .octimeline-hover {
  left: auto;
  right: 0;
  transform: translate(0, 6px);
}

.octimeline[data-popup-align="right"] .octimeline-item:hover .octimeline-hover,
.octimeline[data-popup-align="right"] .octimeline-item:focus-visible .octimeline-hover {
  transform: translate(0, 0);
}

.octimeline--grouped .octimeline-track {
  gap: 18px;
}

.octimeline-group {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: calc(var(--oct-card-min-width) + 18px);
  max-width: calc(var(--oct-card-max-width) + 18px);
  scroll-snap-align: start;
}

.octimeline-group-header {
  position: relative;
  text-align: left;
  font-weight: 700;
  color: var(--oct-navy);
  letter-spacing: 0.4px;
  font-size: var(--oct-year-size);
  padding: 6px 0 8px 18px;
}

.octimeline-group-dot {
  position: absolute;
  top: -12px;
  left: 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--oct-navy);
  box-shadow: 0 0 0 6px rgba(26, 58, 82, 0.18);
}

.octimeline-group-items {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 18px;
}

.octimeline-group-items::before {
  content: "";
  position: absolute;
  left: 12px;
  top: -6px;
  bottom: 4px;
  width: 2px;
  background: var(--oct-mid);
  z-index: 0;
}

.octimeline-group .octimeline-item {
  width: 100%;
  z-index: 1;
}

.octimeline-item--compact {
  padding: 14px 14px 12px;
  font-size: var(--oct-compact-size);
}

.octimeline--grouped .octimeline-item--compact::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--oct-navy);
  box-shadow: 0 0 0 4px rgba(26, 58, 82, 0.12);
}

.octimeline-item--compact:hover {
  transform: translateY(-2px) scale(1.03);
}

.octimeline-item--compact .octimeline-title {
  margin: 4px 0 6px;
  font-size: var(--oct-title-size-compact);
}

.octimeline-item--compact .octimeline-image {
  margin: 8px 0 6px;
}

.octimeline-subdate {
  font-size: var(--oct-subdate-size);
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--oct-tag-color);
}

.octimeline-empty {
  padding: 16px;
  border: 1px dashed var(--oct-mid);
  border-radius: 12px;
  color: #4a5560;
}

@media (max-width: 900px) {
  .octimeline--vertical {
    --oct-vertical-spine: 32px;
    --oct-vertical-spine-half: 16px;
    --oct-vertical-gap: 16px;
    --oct-vertical-line-width: 3px;
    --oct-vertical-connector: calc(var(--oct-vertical-gap) + var(--oct-vertical-spine-half) - (var(--oct-vertical-line-width) / 2));
    --oct-dot-size: 16px;
  }

  .octimeline--vertical .octimeline-track::before {
    left: 16px;
    transform: none;
  }

  .octimeline--vertical .octimeline-row {
    grid-template-columns: 32px minmax(0, 1fr);
    column-gap: 16px;
  }

  .octimeline--vertical .octimeline-row-line {
    grid-column: 1;
  }

  .octimeline--vertical .octimeline-row--left .octimeline-item,
  .octimeline--vertical .octimeline-row--right .octimeline-item {
    grid-column: 2;
    justify-self: stretch;
  }

  .octimeline--vertical .octimeline-row-dot {
    top: 18px;
    transform: translateX(-50%);
  }

  .octimeline--vertical .octimeline-item::after {
    display: none;
  }
}

@media (max-width: 700px) {
  .octimeline-track {
    padding-left: 12px;
    padding-right: 12px;
    padding-bottom: 20px;
    gap: 16px;
    scroll-snap-type: x proximity;
    scroll-padding: 0 12px;
  }

  .octimeline-item {
    min-width: 200px;
  }

  .octimeline--grouped .octimeline-group {
    min-width: calc(72% + 18px);
    max-width: calc(80% + 18px);
  }

  .octimeline-hover {
    position: static;
    opacity: 1;
    transform: none;
    width: auto;
    max-width: none;
    margin-top: 12px;
  }
}