/* ===========================
   MOZAIKA NÁHLEDŮ V ČLÁNKU
   =========================== */

.smart-gallery-wrapper {
    width: 100%;
    /* Kompenzuje sticky header při návratu z detailu via #anchor */
    scroll-margin-top: 80px;
}

.smart-gallery-grid {
    display: grid;
    grid-auto-rows: 110px;
    gap: 5px;
}

/* 1–9 sloupců – výchozí je 3 */
.smart-gallery-cols-1 .smart-gallery-grid { grid-template-columns: repeat(1, 1fr); }
.smart-gallery-cols-2 .smart-gallery-grid { grid-template-columns: repeat(2, 1fr); }
.smart-gallery-cols-3 .smart-gallery-grid { grid-template-columns: repeat(3, 1fr); }
.smart-gallery-cols-4 .smart-gallery-grid { grid-template-columns: repeat(4, 1fr); }
.smart-gallery-cols-5 .smart-gallery-grid { grid-template-columns: repeat(5, 1fr); }
.smart-gallery-cols-6 .smart-gallery-grid { grid-template-columns: repeat(6, 1fr); }
.smart-gallery-cols-7 .smart-gallery-grid { grid-template-columns: repeat(7, 1fr); }
.smart-gallery-cols-8 .smart-gallery-grid { grid-template-columns: repeat(8, 1fr); }
.smart-gallery-cols-9 .smart-gallery-grid { grid-template-columns: repeat(9, 1fr); }

/* Dlaždice – inline style grid-column: span X přijde z PHP pro dorovnání posledního řádku */
.smart-gallery-thumb {
    position: relative;
    overflow: hidden;
    border-radius: 5px;
    cursor: pointer;
    display: block;
    /* Placeholder barva dokud se nenahrají thumbnaile */
    background: #e8e8e8;
}

.smart-gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.22s ease;
}

.smart-gallery-thumb:hover img,
.smart-gallery-thumb:focus-visible img {
    transform: scale(1.04);
}

/* Tmavnutí při hoveru */
.smart-gallery-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    transition: background 0.22s ease;
    pointer-events: none;
    border-radius: 5px;
}

.smart-gallery-thumb:hover::after {
    background: rgba(0, 0, 0, 0.12);
}

/* Přístupný focus */
.smart-gallery-thumb:focus-visible {
    outline: 3px solid #0073aa;
    outline-offset: 2px;
}

/* Popisek pod gridem */
.smart-gallery-wrapper .smart-gallery-total-label {
    margin: 5px 0 0 !important;
    font-size: 12px !important;
    line-height: 1.4 !important;
    color: #aaa !important;
    text-align: right !important;
    font-weight: normal !important;
    padding: 0 !important;
    border: none !important;
    background: none !important;
}

.smart-gallery-total-icon {
    margin-right: 3px;
    opacity: 0.7;
}

/* Chybové hlášky */
.smart-gallery-error,
.smart-gallery-placeholder {
    color: #888;
    font-size: 13px;
    font-style: italic;
}

/* Responzivita: zmenšit výšku řádků na menších obrazovkách */
@media (max-width: 900px) {
    .smart-gallery-grid { grid-auto-rows: 96px; }
}
@media (max-width: 600px) {
    .smart-gallery-grid { grid-auto-rows: 80px; }
    /* Na velmi malých mobilech max 2 sloupce bez ohledu na nastavení */
    .smart-gallery-cols-4 .smart-gallery-grid,
    .smart-gallery-cols-5 .smart-gallery-grid,
    .smart-gallery-cols-6 .smart-gallery-grid,
    .smart-gallery-cols-7 .smart-gallery-grid,
    .smart-gallery-cols-8 .smart-gallery-grid,
    .smart-gallery-cols-9 .smart-gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===========================
   STRÁNKA S JEDNOU FOTKOU
   =========================== */

.smart-gallery-page-wrapper {
    max-width: 1000px;
    margin: 20px auto;
    padding: 0 10px;
    box-sizing: border-box;
}

/* Kotva pro scrollování na začátek galerie */
.smart-gallery-anchor {
    height: 0;
    overflow: hidden;
}

.smart-gallery-page-main {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    margin-bottom: 8px;
    height: 70vh;
    max-height: 70vh;
}

.smart-gallery-page-main-inner {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    max-height: 100%;
}

.smart-gallery-page-main-img {
    max-width: 100%;
    max-height: 100%;
    height: auto;
    border-radius: 4px;
    cursor: zoom-in;
    display: block;
    /* Plynulý fade při přepínání fotek */
    transition: opacity 0.18s ease;
}

.smart-gallery-page-main-inner.is-loading .smart-gallery-page-main-img {
    opacity: 0.25;
}

/* LOADING SPINNER (detail) */
.smart-gallery-page-main-inner.is-loading::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.18);
    border-radius: 4px;
    z-index: 4;
}

.smart-gallery-page-main-inner.is-loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 38px;
    height: 38px;
    margin-left: -19px;
    margin-top: -19px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.35);
    border-top-color: rgba(255, 255, 255, 0.95);
    animation: smartGallerySpin 0.8s linear infinite;
    z-index: 5;
}

@keyframes smartGallerySpin {
    to { transform: rotate(360deg); }
}

/* Šipky (navigace) */
.smart-gallery-page-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    text-decoration: none;
    background: rgba(0, 0, 0, 0.4);
    color: #fff;
    font-size: 26px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
    transition: background 0.18s ease, transform 0.18s ease;
    /* Zabraňuje nechtěnému označení textu při kliknutí */
    user-select: none;
}

.smart-gallery-page-prev { left: 8px; }
.smart-gallery-page-next { right: 8px; }

.smart-gallery-page-arrow:hover {
    background: rgba(0, 0, 0, 0.65);
}

.smart-gallery-page-arrow:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 2px;
    background: rgba(0, 0, 0, 0.65);
}

/* META ŘÁDEK: vlevo odkaz zpět, vpravo stáhnout + index */
.smart-gallery-page-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 6px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.smart-gallery-page-back {
    font-size: 14px;
}

.smart-gallery-page-back a {
    text-decoration: none;
    color: #0073aa;
}

.smart-gallery-page-back a:hover {
    text-decoration: underline;
}

/* Pravá strana: stáhnout + index */
.smart-gallery-page-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

/* Klávesová nápověda */
.smart-gallery-kbd-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #aaa;
    margin-top: 4px;
    user-select: none;
}

.smart-gallery-kbd-hint kbd {
    display: inline-block;
    padding: 1px 5px;
    font-size: 11px;
    font-family: inherit;
    background: #f2f2f2;
    border: 1px solid #ccc;
    border-bottom-width: 2px;
    border-radius: 3px;
    line-height: 1.5;
    color: #555;
}

.smart-gallery-page-index {
    font-size: 13px;
    color: #666;
    white-space: nowrap;
}


/* ===========================
   SPODNÍ NÁHLEDY (scrollovatelné)
   =========================== */

.smart-gallery-page-bottom-thumbs {
    /* Mřížka – všechny náhledy viditelné najednou, žádný horizontální scroll */
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
    gap: 5px;
    margin-top: 8px;
}

.smart-gallery-page-bottom-thumb {
    display: block;
}

.smart-gallery-page-bottom-thumb img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    cursor: pointer;
    border-radius: 3px;
    opacity: 0.65;
    transition: opacity 0.2s ease, box-shadow 0.2s ease, transform 0.18s ease;
}

.smart-gallery-page-bottom-thumb img:hover {
    opacity: 1;
    transform: scale(1.05);
}

.smart-gallery-page-bottom-thumb.is-active img {
    opacity: 1;
    box-shadow: 0 0 0 2px #0073aa;
}

.smart-gallery-page-bottom-thumb:focus-visible {
    outline: 3px solid #0073aa;
    outline-offset: 2px;
    border-radius: 3px;
}

/* ===========================
   INFO PANEL PŘES FOTKU
   =========================== */

.smart-gallery-info-toggle {
    position: absolute;
    left: 10px;
    bottom: 10px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    font-size: 16px;
    font-style: italic;
    font-family: Georgia, serif;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    z-index: 3;
    transition: background 0.18s ease;
}

.smart-gallery-info-toggle:hover {
    background: rgba(0, 0, 0, 0.85);
}

.smart-gallery-info-toggle:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.smart-gallery-info-panel {
    position: absolute;
    left: 10px;
    bottom: 48px; /* nad toggle tlačítkem */
    max-width: 65%;
    background: rgba(0, 0, 0, 0.82);
    color: #fff;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    line-height: 1.5;
    transform: translateY(8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.22s ease, opacity 0.22s ease;
    z-index: 3;
}

.smart-gallery-info-panel.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.smart-gallery-info-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.smart-gallery-info-text {
    font-weight: 400;
}

/* ===========================
   LIGHTBOX
   =========================== */

.smart-gallery-lightbox {
    position: fixed;
    inset: 0;
    display: none;
    z-index: 9999;
}

.smart-gallery-lightbox[data-active="true"] {
    display: block;
}

.smart-gallery-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    cursor: zoom-out;
}

.smart-gallery-lightbox-inner {
    position: fixed;
    inset: 0;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.smart-gallery-lightbox-frame {
    position: relative;
    /* Explicitní rozměry = obrázek se má čeho chytit pro max-width/max-height.
       padding: 20px z -inner se odečte → obrázek nikdy nepřesáhne viewport. */
    max-width:  calc(100vw - 40px);
    max-height: calc(100vh - 40px);
    width: fit-content;
    height: fit-content;
    display: flex;
    justify-content: center;
    align-items: center;
}

.smart-gallery-lightbox-img {
    display: block;
    /* Obrázek se vejde do framu – zachová poměr stran, nepřeteče */
    max-width:  calc(100vw - 40px);
    max-height: calc(100vh - 40px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    cursor: zoom-out;
}

/* LOADING SPINNER (lightbox) */
.smart-gallery-lightbox-frame.is-loading::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.22);
    border-radius: 4px;
    z-index: 4;
}

.smart-gallery-lightbox-frame.is-loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 44px;
    height: 44px;
    margin-left: -22px;
    margin-top: -22px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.35);
    border-top-color: rgba(255, 255, 255, 0.95);
    animation: smartGallerySpin 0.8s linear infinite;
    z-index: 5;
}

.smart-gallery-lightbox-frame.is-loading .smart-gallery-lightbox-img {
    opacity: 0.5;
}

/* Zavřít tlačítko */
.smart-gallery-lightbox-close {
    position: absolute;
    top: 8px;
    right: 8px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 7;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.18s ease, border-color 0.18s ease;
}

.smart-gallery-lightbox-close::before {
    content: '×';
    font-size: 24px;
    line-height: 1;
}

.smart-gallery-lightbox-close:hover {
    background: rgba(0, 0, 0, 0.9);
    border-color: #fff;
}

.smart-gallery-lightbox-close:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 2px;
}

/* Šipky v lightboxu */
.smart-gallery-lightbox-arrow {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(0, 0, 0, 0.55);
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 7;
    transition: background 0.18s ease, border-color 0.18s ease;
}

.smart-gallery-lightbox-prev { left: 12px; }
.smart-gallery-lightbox-next { right: 12px; }

.smart-gallery-lightbox-arrow:hover {
    background: rgba(0, 0, 0, 0.82);
    border-color: rgba(255, 255, 255, 0.7);
}

.smart-gallery-lightbox-arrow:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 3px;
}

/* ===========================
   RESPONZIVITA
   =========================== */

@media (max-width: 768px) {
    .smart-gallery-page-wrapper {
        margin: 12px auto;
        padding: 0 6px;
    }

    /* Na mobilech klávesová nápověda nedává smysl */
    .smart-gallery-kbd-hint {
        display: none;
    }

    .smart-gallery-page-main {
        height: 60vw;
        max-height: 60vw;
    }

    .smart-gallery-info-panel {
        max-width: 85%;
    }

    .smart-gallery-page-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .smart-gallery-page-actions {
        width: 100%;
        justify-content: space-between;
    }

    .smart-gallery-lightbox-arrow {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    .smart-gallery-lightbox-prev { left: 4px; }
    .smart-gallery-lightbox-next { right: 4px; }
}

@media (max-width: 480px) {
    .smart-gallery-page-main {
        height: 70vw;
        max-height: 70vw;
    }

    .smart-gallery-page-bottom-thumb {
        flex: 0 0 64px;
    }

    .smart-gallery-page-bottom-thumb img {
        width: 64px;
        height: 50px;
    }

    .smart-gallery-page-arrow {
        width: 36px;
        height: 36px;
        font-size: 20px;
    }
}