.chart-help-container {
  z-index: 10;
}

.chart-help-container.absolute {
  position: absolute;
  top: 10px;
  right: 10px;
}

.chart-help-container.inline {
  display: inline-flex;
  vertical-align: middle;
  margin-left: 8px;
  position: relative;
}

.chart-help-btn {
  width: 20px;
  height: 20px;
  padding: 0;
  font-size: 14px;
  border-radius: 50%;
  background: transparent !important;
  color: inherit !important;
  border: none !important;
  cursor: pointer;
  box-shadow: none !important;
  transition: transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chart-help-btn:hover, .chart-help-btn.active {
  transform: scale(1.15);
}

.chart-help-popup {
  position: absolute;
  top: 100%;
  margin-top: 8px;
  right: 0;
  z-index: 20;
  width: 280px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 12px;
  animation: fadeIn 0.2s ease-out;
}

.chart-help-container.inline .chart-help-popup {
  left: 0;
  right: auto;
}

.chart-help-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.chart-help-header h4 {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-main);
}

.chart-help-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.chart-help-close:hover {
  color: var(--text-main);
}

.chart-help-body {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}