/* ==========================================================================
   Gallery — photo grid and lightbox
   ========================================================================== */

.photo-grid {
    columns: 1;
    column-gap: var(--space-s);
}

.photo-item {
    margin: 0 0 var(--space-s) 0;
    break-inside: avoid;
}

.photo-thumb {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 2px;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.photo-thumb:hover {
    opacity: 0.85;
}

.photo-caption {
    display: none;
}

.lightbox-caption {
    color: var(--color-fg);
    font-size: var(--text-size-prose);
    line-height: 1.7;
    max-width: 37.5rem;
    text-align: center;
    margin: var(--space-m) auto 0;
    letter-spacing: 0.01em;
    min-height: calc(2 * 1.7 * 1.05rem);
    will-change: opacity;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Lightbox — gallery-specific */

.lightbox-stage {
    display: grid;
    place-items: center;
}

.lightbox-img {
    grid-area: 1 / 1;
    max-width: 90vw;
    max-height: calc(90vh - 8rem);
    object-fit: contain;
    border-radius: 10px;
    will-change: opacity, transform;
    transition:
        opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.lightbox-prev,
.lightbox-next {
    display: none;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-fg);
    font-size: var(--text-size-icon);
    cursor: pointer;
    padding: var(--space-s);
    z-index: 1001;
    font-family: inherit;
    letter-spacing: 0.08em;
    transition:
        color 0.2s ease,
        transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.lightbox-prev:hover {
    color: var(--color-heading);
    transform: translateY(-50%) translateX(-4px);
}

.lightbox-next:hover {
    color: var(--color-heading);
    transform: translateY(-50%) translateX(4px);
}

.lightbox-prev {
    left: var(--space-s);
}

.lightbox-next {
    right: var(--space-s);
}

.lightbox-counter {
    color: var(--color-fg);
    font-size: var(--text-size-sm);
    letter-spacing: 0.08em;
    font-family: var(--font-mono);
    text-align: center;
    margin-top: var(--space-xs);
}

/* Animations */

.js-animated .photo-item {
    opacity: 0;
    animation: fadeIn 0.6s ease-out 0.5s forwards;
}

/* Responsive */

@media (min-width: 541px) {
    .photo-grid {
        columns: 2;
    }

    .lightbox-prev,
    .lightbox-next {
        display: block;
    }
}

@media (min-width: 921px) {
    .photo-grid {
        columns: 3;
    }
}