/* Light mode */
.highcharts-data-label text {
    fill: #000 !important;
    text-shadow: 1px 1px 0 #fff, -1px 1px 0 #fff, 1px -1px 0 #fff, -1px -1px 0 #fff !important;
}

/* Dark mode */
.highcharts-dark .highcharts-data-label text {
    fill: #fff !important;
    text-shadow: 1px 1px 0 #000, -1px 1px 0 #000, 1px -1px 0 #000, -1px -1px 0 #000 !important;
}

.highcharts-dark .highcharts-title,
.highcharts-dark .highcharts-subtitle,
.highcharts-dark .highcharts-axis-title,
.highcharts-dark .highcharts-axis-labels text {
    fill: #fff !important;
}

.highcharts-dark .highcharts-tooltip {
    filter: brightness(0.8);
}

.highcharts-dark .highcharts-tooltip text {
    fill: #fff !important;
}

/* Improve text contrast */
.highcharts-dark .highcharts-data-label-connector {
    stroke: #fff;
}

.highcharts-dark .highcharts-legend-item text {
    fill: #fff !important;
}

/* Better visibility for map borders */
.highcharts-dark .highcharts-map-series .highcharts-point {
    stroke: #4b5563;
    stroke-width: 0.5;
}