/* components/timeline.css */

.tl-root {
  position: relative;
  height: 100%;
  width: 110px;
  background: rgba(10, 14, 39, 0.92);
  backdrop-filter: blur(10px);
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0;
  padding: 24px 0;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
  flex-shrink: 0;
}

.tl-root::-webkit-scrollbar { 
  width: 4px;
}

.tl-root::-webkit-scrollbar-track {
  background: transparent;
}

.tl-root::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
}

.tl-root::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Vertical connecting line */
.tl-line {
  position: absolute;
  left: 50%;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(-50%);
  border-radius: 2px;
  pointer-events: none;
}

/* Each year row */
.tl-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px 10px 28px;
  cursor: pointer;
  transition: background 0.2s;
  z-index: 1;
}

.tl-item:hover {
  background: rgba(102, 126, 234, 0.12);
}

/* Dot on the line */
.tl-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.35);
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.tl-item:hover .tl-dot {
  background: rgba(102, 126, 234, 0.6);
  border-color: #667eea;
}

.tl-item.tl-active .tl-dot {
  background: #ff9800;
  border-color: #ff9800;
  transform: translateX(-50%) scale(1.35);
  box-shadow: 0 0 8px rgba(255, 152, 0, 0.6);
}

/* Year + label text */
.tl-info {
  display: flex;
  flex-direction: column;
  padding-left: 14px;
  pointer-events: none;
}

.tl-year {
  font-size: 12px;
  font-weight: 700;
  color: #aaa;
  font-variant-numeric: tabular-nums;
  transition: color 0.2s;
}

.tl-label {
  font-size: 9px;
  color: #666;
  white-space: nowrap;
  transition: color 0.2s;
}

.tl-item:hover .tl-year  { color: #fff; }
.tl-item:hover .tl-label { color: #aaa; }

.tl-item.tl-active .tl-year  { color: #ff9800; }
.tl-item.tl-active .tl-label { color: #ffb74d; }

/* Light theme */
body.light .tl-root {
  background: rgba(232, 234, 246, 0.95);
  border-right-color: rgba(0, 0, 0, 0.1);
}

body.light .tl-line { background: rgba(0, 0, 0, 0.1); }
body.light .tl-item:hover { background: rgba(102, 126, 234, 0.1); }
body.light .tl-dot { background: rgba(0,0,0,0.15); border-color: rgba(0,0,0,0.25); }
body.light .tl-year  { color: #555; }
body.light .tl-label { color: #999; }
body.light .tl-item:hover .tl-year  { color: #1a1a2e; }
body.light .tl-item:hover .tl-label { color: #555; }