/* Tooltip styles */
[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -25px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 8px;
    line-height: 1;
    background-color: #666;
    color: white;
    font-size: 12px;
    border-radius: 36px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 0.3s,
        visibility 0.3s;
    z-index: 10;
}

[data-tooltip]:hover::before {
    opacity: 1;
    visibility: visible;
}