.timeline {
  height: 100%;
  display: flex;
  align-items: center;
  padding: 16px 24px;
  gap: 16px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-text-muted) transparent;
}

/* Play/Pause button */
.timeline-play-btn {
  flex-shrink: 0;
  align-self: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--color-text-muted);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.timeline-play-btn:hover {
  border-color: var(--color-text);
  background: rgba(255, 255, 255, 0.1);
}

.timeline-play-btn:active {
  transform: scale(0.95);
}

.timeline-play-btn .pause-icon {
  display: none;
}

.timeline-play-btn.playing .play-icon {
  display: none;
}

.timeline-play-btn.playing .pause-icon {
  display: block;
}

.timeline-play-btn.playing {
  border-color: var(--color-blue);
  background: rgba(0, 85, 164, 0.2);
}

.timeline::-webkit-scrollbar {
  height: 6px;
}

.timeline::-webkit-scrollbar-track {
  background: transparent;
}

.timeline::-webkit-scrollbar-thumb {
  background: var(--color-text-muted);
  border-radius: 3px;
}

.timeline-months {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 24px 16px 0;
  flex-shrink: 0;
}

.timeline-year {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  padding: 0 8px;
  opacity: 0.3;
  flex-shrink: 0;
}

.timeline-month {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.timeline-month-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.timeline-events {
  display: flex;
  gap: 10px;
  align-items: center;
}

.timeline-event {
  position: relative;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 2px solid transparent;
}

.timeline-event::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: radial-gradient(circle, currentColor 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.2s;
}

.timeline-event:hover {
  transform: scale(1.3);
}

.timeline-event:hover::before {
  opacity: 0.3;
}

.timeline-event.selected {
  transform: scale(1.4);
  border-color: var(--color-white);
}

.timeline-event.selected::before {
  opacity: 0.5;
}

/* Event type colors */
.timeline-event.international {
  background: var(--color-blue);
  color: var(--color-blue);
}

.timeline-event.national {
  background: var(--color-red);
  color: var(--color-red);
}

.timeline-event.training {
  background: var(--color-text-muted);
  color: var(--color-text-muted);
}

/* Tooltip - appears below the dot */
.timeline-event-tooltip {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 4px 8px;
  white-space: nowrap;
  font-size: 0.65rem;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.timeline-event-tooltip strong {
  font-weight: 600;
}

.timeline-event:hover .timeline-event-tooltip {
  opacity: 1;
}

.timeline-event-tooltip::after {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-bottom-color: var(--color-bg);
}

/* Mobile: horizontal scrolling timeline */
@media (max-width: 768px) {
  .timeline {
    padding: 4px 16px;
    gap: 12px;
  }

  .timeline-play-btn {
    width: 40px;
    height: 40px;
  }

  .timeline-play-btn svg {
    width: 16px;
    height: 16px;
  }

  .timeline-months {
    gap: 16px;
    padding: 4px 16px 4px 0;
  }

  .timeline-year {
    font-size: 1.1rem;
    padding: 0 4px;
  }

  .timeline-month {
    gap: 6px;
  }

  .timeline-month-label {
    font-size: 0.6rem;
  }

  .timeline-events {
    gap: 8px;
  }

  .timeline-event {
    width: 14px;
    height: 14px;
  }

  /* Hide tooltip on mobile */
  .timeline-event-tooltip {
    display: none;
  }
}