/* Dual-faced card flip control (personal library card grid) */

.cb-card-img-wrap--dual .cb-card-flip-btn {
    display: inline-flex;
}

.cb-card-flip-btn {
    display: none;
    position: absolute;
    right: 8px;
    bottom: 8px;
    z-index: 2;

    align-items: center;
    justify-content: center;

    width: 2rem;
    height: 2rem;

    border: none;
    border-radius: 999px;

    background: rgba(15, 23, 42, 0.72);
    color: #fff;

    font-size: 0.85rem;
    line-height: 1;

    cursor: pointer;

    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.35);

    transition:
        background 0.15s ease,
        transform 0.15s ease;
}

.cb-card-flip-btn:hover {
    background: rgba(37, 99, 235, 0.92);
    transform: scale(1.06);
}

.cb-card-flip-btn:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}