.tooltip {
    position: fixed;
    background-color: #1a1a1a;
    color: var(--primary-text-color);
    padding: 0.5rem 1rem;
    border-radius: var(--hb-card-radius);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 2000;
    pointer-events: none;
    opacity: 0;
    transform: translateY(5px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
}

.tooltip.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.tooltip::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 100%;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: #1a1a1a transparent transparent transparent;
}