.circle-box {
    position: relative;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    color: #fff;
    font-size: 0.95rem;
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
    text-align: center;
    margin: 0 auto;
    z-index: 1;
    /* Allow Bootstrap bg-* utilities to control color per card */
    /* background-color intentionally not set here */
}

.circle-box:hover {
    transform: scale(1.07);
}

/* Ensure readable text even if Bootstrap text-dark was used in markup */
/* Respect text utility classes (let text-dark render dark text when present) */

/* Headings and subtext inside the circle */
.circle-box h4 { color: #fff; margin-bottom: .25rem; }
.circle-box small { color: rgba(255,255,255,0.9); }

.hover-popup {
    display: none;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background-color: white;
    color: black;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    width: 220px;
    z-index: 9999;           /* make sure it's above all */
    font-size: 0.85rem;
    margin-top: 10px;
    text-align: left;
    white-space: normal;
}

.circle-box:hover .hover-popup {
    display: block;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .circle-box { width: 160px; height: 160px; }
    .hover-popup { width: 200px; }
}

@media (max-width: 576px) {
    .circle-box { width: 120px; height: 120px; font-size: 0.85rem; }
    .hover-popup { width: 180px; font-size: 0.8rem; }
}