Art-gallery/client/src/components/Timeline.css

.timeline-wrapper {
  background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
  border-bottom: 2px solid #c9a96e;
  padding: 12px 16px 8px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.timeline-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.timeline-controls button {
  width: 32px;
  height: 32px;
  border: 1px solid #c9a96e;
  background: rgba(201, 169, 110, 0.15);
  color: #e8d5b5;
  border-radius: 4px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  transition: background 0.2s;
}

.timeline-controls button:hover {
  background: rgba(201, 169, 110, 0.35);
}

.timeline-range {
  margin-left: 12px;
  color: #f5e6c8;
  font-family: 'Georgia', serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.85);
}

.timeline-container {
  position: relative;
  height: 96px;
  cursor: grab;
  user-select: none;
  border: 1px solid rgba(201, 169, 110, 0.3);
  border-radius: 4px;
  overflow: hidden;
}

.timeline-container:active {
  cursor: grabbing;
}

.timeline-lifespan-overlays {
  position: absolute;
  inset: 0;
  z-index: 6;
  pointer-events: none;
}

.timeline-lifespan-dim {
  position: absolute;
  top: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.55);
}

.timeline-lifespan-highlight {
  position: absolute;
  top: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0.22) 18%,
    rgba(255, 255, 255, 0.38) 50%,
    rgba(255, 255, 255, 0.22) 82%,
    rgba(255, 255, 255, 0.05) 100%
  );
  box-shadow:
    inset 0 0 0 2px rgba(255, 240, 200, 0.55),
    inset 0 0 32px rgba(255, 255, 255, 0.2);
  border-left: 2px solid rgba(255, 230, 180, 0.75);
  border-right: 2px solid rgba(255, 230, 180, 0.75);
}

.timeline-track {
  position: absolute;
  inset: 0;
  display: flex;
}

.era-block {
  position: absolute;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0;
  border-top: none;
  border-bottom: none;
  cursor: pointer;
  transition: filter 0.2s, box-shadow 0.2s;
}

.era-block:hover {
  filter: brightness(1.15);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  z-index: 2;
}

.era-block:focus-visible {
  outline: 2px solid #c9a96e;
  outline-offset: -2px;
  z-index: 2;
}

.era-label {
  color: rgba(255, 255, 255, 0.85);
  font-family: 'Georgia', serif;
  font-size: 13px;
  font-weight: 600;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  white-space: nowrap;
  pointer-events: none;
}

.timeline-events {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

.historical-event {
  position: absolute;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  pointer-events: auto;
}

.historical-event-point {
  top: 0;
  bottom: 0;
  width: 0;
  transform: translateX(-50%);
}

.historical-event-point .event-marker-line {
  display: none;
}

.historical-event-span {
  top: 20px;
  bottom: 24px;
  background: rgba(180, 70, 55, 0.28);
  border-left: 2px solid rgba(255, 150, 110, 0.75);
  border-right: 2px solid rgba(255, 150, 110, 0.75);
  border-radius: 2px;
}

.historical-event-point::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  width: 7px;
  height: 7px;
  transform: translateX(-50%) rotate(45deg);
  background: rgba(255, 215, 130, 0.95);
  border: 1px solid rgba(255, 240, 200, 0.8);
  box-shadow: 0 0 4px rgba(255, 200, 100, 0.5);
}

.historical-event-span {
  background: transparent;
  border-left-color: transparent;
  border-right-color: transparent;
}

.historical-event-span:hover,
.historical-event-point:hover::before {
  filter: brightness(1.2);
}

.historical-event:focus-visible {
  outline: 2px solid #e8c878;
  outline-offset: 1px;
}

.event-label {
  position: absolute;
  top: 2px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 120px;
  padding: 1px 5px;
  font-family: 'Georgia', serif;
  font-size: 9px;
  font-weight: 600;
  line-height: 1.2;
  color: rgba(255, 235, 200, 0.95);
  background: rgba(20, 16, 28, 0.72);
  border: 1px solid rgba(255, 200, 120, 0.35);
  border-radius: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.9);
  pointer-events: none;
}

.historical-event-span .event-label {
  top: 1px;
}

.timeline-ticks {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 34px;
  z-index: 5;
}

.tick {
  position: absolute;
  bottom: 0;
  transform: translateX(-50%);
  border-left: 2px solid rgba(245, 230, 200, 0.75);
  height: 12px;
}

.tick span {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Georgia', serif;
  font-size: 14px;
  font-weight: 700;
  color: #f5e6c8;
  text-shadow:
    0 0 8px rgba(0, 0, 0, 0.95),
    0 1px 2px rgba(0, 0, 0, 1),
    0 0 1px rgba(0, 0, 0, 1);
  white-space: nowrap;
}

.brush-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 6px;
  transform: translateX(-50%);
  cursor: ew-resize;
  background: rgba(201, 169, 110, 0.5);
  opacity: 0;
  transition: opacity 0.2s;
}

.timeline-container:hover .brush-handle {
  opacity: 1;
}

.timeline-hint {
  margin: 6px 0 0;
  font-size: 11px;
  color: rgba(201, 169, 110, 0.5);
  text-align: center;
}