/* ==========================================================================
   Gallery Page Styles
   ========================================================================== */

/* ---------- Intro ---------- */

.gallery-intro {
    max-width: 65ch;
    margin-inline: auto;
    text-align: center;
    color: var(--color-text-secondary);
}

/* ---------- Filter Bar ---------- */

.gallery-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-10);
}

.gallery-filter {
    font-family: var(--font-ui);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    padding: var(--space-2) var(--space-5);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    background-color: var(--color-white);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
    cursor: pointer;
}

.gallery-filter:hover {
    border-color: var(--color-primary-300);
    color: var(--color-primary-600);
}

.gallery-filter.is-active,
.gallery-filter[aria-pressed="true"] {
    background-color: var(--color-primary-600);
    border-color: var(--color-primary-600);
    color: var(--color-white);
}

.gallery-filter:focus-visible {
    outline: 3px solid var(--color-primary-500);
    outline-offset: 3px;
}

/* ---------- Gallery Grid ---------- */

.gallery-grid {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 960px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1200px) {
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.gallery-item {
    overflow: hidden;
    border-radius: var(--card-radius);
    cursor: pointer;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.gallery-item img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
    width: 100%;
    height: auto;
    transition: transform var(--transition-base);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item:focus-visible {
    outline: 3px solid var(--color-primary-500);
    outline-offset: 3px;
}

.gallery-item.is-hidden {
    opacity: 0;
    transform: scale(0.95);
}

/* ---------- Lightbox ---------- */

.lightbox[hidden] {
    display: none;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox__backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
}

.lightbox__content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: var(--space-16) var(--space-16);
}

.lightbox__figure {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 90vw;
    max-height: 80vh;
}

.lightbox__img {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
}

.lightbox__caption {
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    text-align: center;
    margin-top: var(--space-3);
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
    position: absolute;
    z-index: 2;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
    cursor: pointer;
    border: none;
    padding: 0;
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
    background: rgba(255, 255, 255, 0.25);
}

.lightbox__close:focus-visible,
.lightbox__prev:focus-visible,
.lightbox__next:focus-visible {
    outline: 3px solid var(--color-primary-500);
    outline-offset: 3px;
}

.lightbox__close {
    top: var(--space-4);
    right: var(--space-4);
}

.lightbox__prev {
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
}

.lightbox__next {
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
}

.lightbox__close svg,
.lightbox__prev svg,
.lightbox__next svg {
    width: 24px;
    height: 24px;
}

.lightbox__counter {
    position: absolute;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.6);
    font-family: var(--font-ui);
    font-size: var(--text-sm);
}

/* ---------- Mobile (< 640px) ---------- */

@media (max-width: 639px) {
    .lightbox__content {
        padding: var(--space-12) var(--space-2);
    }

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

    .lightbox__prev {
        left: var(--space-2);
    }

    .lightbox__next {
        right: var(--space-2);
    }

    .lightbox__close {
        top: var(--space-2);
        right: var(--space-2);
    }
}