.mobile-flip-board {
    width: 100%;
    background: #151515;
    border: 1px solid #2c2c2c;
    border-radius: 8px;
    padding: 10px 6px;
    overflow: hidden;
}

.mobile-flip-row {
    display: grid;
    grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
    gap: 3px;
    margin-bottom: 7px;
}

.mobile-flip-row:last-child {
    margin-bottom: 0;
}

.mobile-tile {
    position: relative;
    aspect-ratio: 0.75 / 1;
    background: linear-gradient(180deg, #242424, #050505 52%, #171717 53%, #050505 100%);
    border: 1px solid #353535;
    border-radius: 4px;
    overflow: hidden;
    display: grid;
    place-items: center;
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.14),
        inset 0 -2px 0 rgba(0,0,0,0.7),
        0 1px 0 rgba(255,255,255,0.08);
}

.mobile-tile::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: #000;
    z-index: 2;
}

.mobile-tile span {
    font-family: Helvetica, Arial, sans-serif;
    font-weight: 900;
    font-size: clamp(19px, 6.3vw, 28px);
    color: #f4f4f4;
    line-height: 1;
    text-shadow: 0 1px 0 #000;
}

.mobile-tile.flip span {
    animation: mobileFlip 140ms ease-in-out;
}

@keyframes mobileFlip {
    0% { transform: rotateX(0deg); opacity: 1; }
    45% { transform: rotateX(86deg); opacity: 0.45; }
    100% { transform: rotateX(0deg); opacity: 1; }
}