/* ── Image gallery ────────────────────────── */

.gallery__header {
    margin-bottom: var(--space-12);
}

.gallery__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

.gallery__item {
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--color-border);
}

.gallery__btn {
    display: block;
    width: 100%;
    height: 100%;
    padding: 0;
    border: none;
    background: none;
    cursor: zoom-in;
}

.gallery__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.gallery__btn:hover .gallery__img,
.gallery__btn:focus-visible .gallery__img {
    transform: scale(1.04);
}

.gallery__btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: -2px;
}

@media (max-width: 800px) {
    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .gallery__grid {
        grid-template-columns: 1fr;
    }
}


/* ── Lightbox ─────────────────────────────── */

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox[hidden] {
    display: none;
}

.lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    cursor: pointer;
}

.lightbox__frame {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox__img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    display: block;
    border-radius: var(--radius-md);
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6);
}

/* Controls */

.lightbox__close,
.lightbox__prev,
.lightbox__next {
    position: absolute;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-white);
    cursor: pointer;
    transition: background var(--transition);
    backdrop-filter: blur(4px);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
    background: rgba(255, 255, 255, 0.24);
}

.lightbox__close:focus-visible,
.lightbox__prev:focus-visible,
.lightbox__next:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.lightbox__close {
    top: var(--space-5);
    right: var(--space-5);
    width: 44px;
    height: 44px;
}

.lightbox__prev,
.lightbox__next {
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
}

.lightbox__prev { left: var(--space-5); }
.lightbox__next { right: var(--space-5); }

.lightbox__counter {
    position: absolute;
    bottom: var(--space-5);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.05em;
}

@media (max-width: 600px) {
    .lightbox__prev { left: var(--space-2); }
    .lightbox__next { right: var(--space-2); }
    .lightbox__close { top: var(--space-2); right: var(--space-2); }

    .lightbox__prev,
    .lightbox__next {
        width: 40px;
        height: 40px;
    }
}