/* ====================
TITLES GRID
==================== */
.titles-grid {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    display: grid;
    gap: 2px;
}

.row {
    display: grid;
    gap: 2px;
}

.row-3col {
    grid-template-columns: repeat(3, 1fr);
}

.row-2col {
    grid-template-columns: repeat(2, 1fr);
}

/* ====================
GRID BUTTONS (image swap)
==================== */
.grid-btn {
    position: relative;
    display: block;
    overflow: hidden;
}

.grid-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.grid-btn .btn-default {
    position: relative;
    z-index: 1;
    opacity: 1;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.grid-btn .btn-hover {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.rectangle {
    aspect-ratio: 397 / 508;
}

.square {
    aspect-ratio: 1 / 1;
}

/* Desktop hover */
@media (min-width: 769px) {
    .grid-btn:hover .btn-default {
        transform: scale(1.02);
    }

    .grid-btn:hover .btn-hover {
        opacity: 1;
        transform: scale(1.02);
    }
}

/* Mobile: stack everything, disable hover-swap */
@media (max-width: 768px) {
    .row-3col,
    .row-2col {
        grid-template-columns: 1fr;
    }

    .grid-btn .btn-hover {
        display: none;
    }

    .grid-btn:active .btn-default {
        transform: scale(1.03);
    }
}