.custom-tooltip {
    position: absolute;
    background: #333;
    color: #fff;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
    max-width: 250px;
    z-index: 10000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    pointer-events: none;
    opacity: 0;
}

.custom-tooltip .tooltip-content {
    white-space: pre-line;
}

.custom-tooltip .tooltip-arrow {
    position: absolute;
    width: 0;
    height: 0;
    border: 6px solid transparent;
}

.custom-tooltip .arrow-top {
    border-top-color: #333;
    top: -6px;
}

.custom-tooltip .arrow-bottom {
    border-bottom-color: #333;
    bottom: -6px;
}

.custom-tooltip .arrow-left {
    border-left-color: #333;
    left: -6px;
}

.custom-tooltip .arrow-right {
    border-right-color: #333;
    right: -6px;
}