/* ============================================================
   PQ Gallery — Frontend CSS
   Závislosti: tokens.css (design tokeny --color-*, --space-*, --radius-*, --transition-*)
   ============================================================ */

/* ── Sekce galerie ─────────────────────────────────────────── */
.pq-gallery {
    margin: var(--space-8, 2rem) 0;
}

/* ── Scrollovatelný pás ────────────────────────────────────── */
.pq-gallery__track {
    display: grid;
    /* 4 sloupce fixní šířky — při více fotkách se posouvá */
    grid-auto-flow: column;
    grid-auto-columns: calc(25% - 6px); /* 4 viditelné, mezera 8px */
    gap: 8px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px; /* prostor pro scrollbar */
    /* Skrytí scrollbaru — vizuálně čistší (scroll stále funguje) */
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary, #FFCC00) transparent;
}

.pq-gallery__track::-webkit-scrollbar {
    height: 4px;
}

.pq-gallery__track::-webkit-scrollbar-track {
    background: transparent;
}

.pq-gallery__track::-webkit-scrollbar-thumb {
    background: var(--color-primary, #FFCC00);
    border-radius: 2px;
}

/* Na mobilu 2 sloupce */
@media (max-width: 600px) {
    .pq-gallery__track {
        grid-auto-columns: calc(50% - 4px);
    }
}

/* ── Položka galerie ───────────────────────────────────────── */
.pq-gallery__item {
    margin: 0;
    scroll-snap-align: start;
    overflow: hidden;
    position: relative;
    aspect-ratio: 400 / 284;
    border-radius: var(--radius-sm, 4px);
    background: var(--color-bg-alt, #f5f5f5);
}

/* ── Odkaz ─────────────────────────────────────────────────── */
.pq-gallery__link {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

/* ── Obrázek ───────────────────────────────────────────────── */
.pq-gallery__img {
    width: 100%;
    height: 100%!important;
    object-fit: cover;
    object-position: center center;
    display: block;
    transition: transform var(--transition-base, 0.35s ease);
}

.pq-gallery__link:hover .pq-gallery__img,
.pq-gallery__link:focus-visible .pq-gallery__img {
    transform: scale(1.06);
}

/* ── Zoom overlay ──────────────────────────────────────────── */
.pq-gallery__zoom {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
    opacity: 0;
    transition: opacity var(--transition-fast, 0.2s ease);
}

.pq-gallery__link:hover .pq-gallery__zoom,
.pq-gallery__link:focus-visible .pq-gallery__zoom {
    opacity: 1;
}

/* ── Popisek pod fotkou ────────────────────────────────────── */
.pq-gallery__caption {
    font-size: 12px;
    color: var(--color-text-muted, #666);
    text-align: center;
    margin: 4px 0 0;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* sr-only (pokud není v globálním CSS) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ── Lightbox ──────────────────────────────────────────────── */
.pq-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, .92);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* [CP-12] — display:flex musí být přepsáno když je hidden */
.pq-lightbox[hidden] {
    display: none !important;
}

/* ── Lightbox obrázek ──────────────────────────────────────── */
.pq-lightbox__img-wrap {
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pq-lightbox__img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    display: block;
    transition: opacity 0.15s ease;
}

/* ── Lightbox navigace ─────────────────────────────────────── */
.pq-lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, .15);
    border: none;
    color: #fff;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease;
}

.pq-lightbox__nav:hover,
.pq-lightbox__nav:focus-visible {
    background: rgba(255, 255, 255, .3);
    outline: 2px solid rgba(255, 255, 255, .7);
    outline-offset: 2px;
}

.pq-lightbox__nav--prev { left: 1rem; }
.pq-lightbox__nav--next { right: 1rem; }

.pq-lightbox__nav svg {
    display: block;
    flex-shrink: 0;
    color: #fff;
}

/* ── Lightbox zavřít ───────────────────────────────────────── */
.pq-lightbox__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, .1);
    border: none;
    color: #fff;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease;
}

.pq-lightbox__close:hover,
.pq-lightbox__close:focus-visible {
    background: rgba(255, 255, 255, .25);
    outline: 2px solid rgba(255, 255, 255, .7);
    outline-offset: 2px;
}

.pq-lightbox__close svg {
    display: block;
    flex-shrink: 0;
    color: #fff;
}

/* ── Lightbox popisek ──────────────────────────────────────── */
.pq-lightbox__caption {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, .75);
    font-size: 13px;
    text-align: center;
    margin: 0;
    pointer-events: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 80vw;
}