/**
 * Lukuro Product Grid Gallery
 * @version 1.0.0
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */

:root {
    --lukuro-grid-gap: 4px;
    --lukuro-grid-cols: 3;
    --lukuro-grid-transition: 0.15s ease-in-out;
}

/* ==========================================================================
   Base & FOUC Prevention
   ========================================================================== */

lukuro-product-grid-gallery {
    display: block;
    position: relative;
    width: 100%;
    opacity: 0;
    transition: opacity var(--lukuro-grid-transition);
}

lukuro-product-grid-gallery.lukuro-initialized {
    opacity: 1;
}

/* SSR fallback: show images before JS initializes */
lukuro-product-grid-gallery:not(.lukuro-initialized) {
    opacity: 1;
}

lukuro-product-grid-gallery:not(.lukuro-initialized) .lukuro-ssr-gallery {
    display: block;
    min-height: 400px;
    background: #f8f8f8;
}

lukuro-product-grid-gallery:not(.lukuro-initialized) .lukuro-ssr-gallery img:first-child {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
}

lukuro-product-grid-gallery:not(.lukuro-initialized) .lukuro-ssr-gallery img:not(:first-child) {
    display: none;
}

/* No SSR content — show spinner */
lukuro-product-grid-gallery:not(.lukuro-initialized):empty {
    opacity: 0;
    min-height: 400px;
    background: #f8f8f8;
    display: flex;
    align-items: center;
    justify-content: center;
}

lukuro-product-grid-gallery:not(.lukuro-initialized):empty::before {
    content: "";
    width: 32px;
    height: 32px;
    border: 2px solid #e0e0e0;
    border-top-color: #999;
    border-radius: 50%;
    animation: lukuro-spin 0.6s linear infinite;
}

lukuro-product-grid-gallery.lukuro-updating {
    opacity: 0;
    transition: opacity 0.1s ease;
}

/* ==========================================================================
   Grid Gallery Container
   ========================================================================== */

.lukuro-grid-gallery {
    width: 100%;
    position: relative;
}

.lukuro-grid-gallery:not(.lukuro-grid-gallery--expanded):has(.lukuro-grid-gallery__show-more) {
    padding-bottom: 24px;
}

/* ==========================================================================
   Hero Row (first 2 images)
   ========================================================================== */

.lukuro-grid-gallery__hero-row {
    display: grid;
    gap: var(--lukuro-grid-gap);
    margin-bottom: var(--lukuro-grid-gap);
}

/* Layout variants */
.lukuro-grid-gallery__hero-row[data-layout="50-50"] {
    grid-template-columns: 1fr 1fr;
}

.lukuro-grid-gallery__hero-row[data-layout="40-60"] {
    grid-template-columns: 2fr 3fr;
}

.lukuro-grid-gallery__hero-row[data-layout="60-40"] {
    grid-template-columns: 3fr 2fr;
}

.lukuro-grid-gallery__hero-row--single {
    grid-template-columns: 1fr;
}

/* ==========================================================================
   Grid Rows (remaining images)
   ========================================================================== */

.lukuro-grid-gallery__rows {
    display: grid;
    grid-template-columns: repeat(var(--lukuro-grid-cols), 1fr);
    gap: var(--lukuro-grid-gap);
    margin-bottom: var(--lukuro-grid-gap);
}

.lukuro-grid-gallery__rows:last-of-type {
    margin-bottom: 0;
}

/* ==========================================================================
   Featured Pattern Rows (1-2-3-2-3…)
   ========================================================================== */

.lukuro-grid-gallery--featured .lukuro-grid-gallery__row {
    display: grid;
    gap: var(--lukuro-grid-gap);
    margin-bottom: var(--lukuro-grid-gap);
}

.lukuro-grid-gallery--featured .lukuro-grid-gallery__row--hero {
    grid-template-columns: 1fr;
}

.lukuro-grid-gallery--featured .lukuro-grid-gallery__row[data-cols="1"] {
    grid-template-columns: 1fr;
}

.lukuro-grid-gallery--featured .lukuro-grid-gallery__row[data-cols="2"] {
    grid-template-columns: 1fr 1fr;
}

.lukuro-grid-gallery--featured .lukuro-grid-gallery__row[data-cols="3"] {
    grid-template-columns: 1fr 1fr 1fr;
}

.lukuro-grid-gallery--featured .lukuro-grid-gallery__row:last-of-type {
    margin-bottom: 0;
}

/* Hero image: contain, full size, no hover scale */
.lukuro-grid-gallery--featured .lukuro-grid-gallery__item--contain {
    aspect-ratio: auto;
    background: #fff;
}

.lukuro-grid-gallery--featured .lukuro-grid-gallery__item--contain img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.lukuro-grid-gallery--featured .lukuro-grid-gallery__item--contain:hover img {
    transform: none;
}

/* ==========================================================================
   Grid Item
   ========================================================================== */

.lukuro-grid-gallery__item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 3 / 4;
    background: #f5f5f5;
}

.lukuro-grid-gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.lukuro-grid-gallery__item:hover img {
    transform: scale(1.03);
}

/* Hidden items (before expand) */
.lukuro-grid-gallery__item--hidden {
    display: none;
}

.lukuro-grid-gallery--expanded .lukuro-grid-gallery__item--hidden {
    display: block;
}

/* ==========================================================================
   Show More Button
   ========================================================================== */

.lukuro-grid-gallery__show-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: auto;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%, 50%);
    z-index: 5;
    margin: 0;
    padding: 12px 32px;
    background: #fff;
    border: 1px solid #222;
    border-radius: 0;
    color: #222;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.lukuro-grid-gallery__show-more:hover {
    background: #222;
    color: #fff;
}

.lukuro-grid-gallery__show-more-icon {
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

/* When expanded, button returns to normal flow at bottom */
.lukuro-grid-gallery--expanded .lukuro-grid-gallery__show-more {
    position: relative;
    bottom: auto;
    left: auto;
    transform: none;
    margin: var(--lukuro-grid-gap) auto 0;
}

/* ==========================================================================
   Lightbox
   ========================================================================== */

.lukuro-grid-lightbox {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.lukuro-grid-lightbox--active {
    opacity: 1;
}

.lukuro-grid-lightbox__image {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    user-select: none;
}

.lukuro-grid-lightbox__close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 8px;
    z-index: 2;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.lukuro-grid-lightbox__close:hover {
    opacity: 1;
}

.lukuro-grid-lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 16px;
    z-index: 2;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.lukuro-grid-lightbox__nav:hover:not(:disabled) {
    opacity: 1;
}

.lukuro-grid-lightbox__nav:disabled {
    opacity: 0.25;
    cursor: default;
}

.lukuro-grid-lightbox__nav--prev {
    left: 8px;
}

.lukuro-grid-lightbox__nav--next {
    right: 8px;
}

.lukuro-grid-lightbox__counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Video Overlay on Grid Item
   ========================================================================== */

/* Video as standalone grid item (2nd hero slot) */
.lukuro-grid-gallery__item--video {
    position: relative;
    cursor: pointer;
    overflow: hidden;
}

.lukuro-grid-gallery__video-wrap {
    width: 100%;
    height: 100%;
    position: relative;
}

.lukuro-grid-gallery__video-poster {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lukuro-grid-gallery__video-player {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.lukuro-grid-gallery__item--playing .lukuro-grid-gallery__video-overlay {
    display: none;
}

.lukuro-grid-gallery__video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(0, 0, 0, 0.25);
    color: #fff;
    z-index: 2;
    transition: background-color 0.2s;
}

.lukuro-grid-gallery__item--video:hover .lukuro-grid-gallery__video-overlay {
    background: rgba(0, 0, 0, 0.15);
}

.lukuro-grid-gallery__video-play {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    font-size: 20px;
    color: #333;
    line-height: 1;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.lukuro-grid-gallery__video-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   States
   ========================================================================== */

.lukuro-grid-gallery__empty,
.lukuro-grid-gallery__error {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    background: #f8f8f8;
    color: #666;
    font-size: 16px;
    text-align: center;
}

.lukuro-grid-gallery__error {
    background: #ffeaea;
    color: #d63638;
}

lukuro-product-grid-gallery.lukuro-loading {
    opacity: 0.7;
    pointer-events: none;
}

lukuro-product-grid-gallery.lukuro-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #007cba;
    border-top-color: transparent;
    border-radius: 50%;
    animation: lukuro-spin 0.6s linear infinite;
    z-index: 10;
}

/* ==========================================================================
   Mobile (<768px): Uses Splide slider — reuses product-slider.css styles
   Grid is not rendered on mobile; the Splide container is used instead.
   ========================================================================== */

@media (max-width: 767px) {
    .lukuro-grid-gallery {
        display: none !important;
    }
}

/* Ensure grid is visible on desktop */
@media (min-width: 768px) {
    lukuro-product-grid-gallery .lukuro-product-slider-container {
        display: none !important;
    }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.lukuro-grid-gallery__item:focus-visible {
    outline: 2px solid #007cba;
    outline-offset: -2px;
}

.lukuro-grid-gallery__show-more:focus-visible {
    outline: 2px solid #007cba;
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    lukuro-product-grid-gallery,
    lukuro-product-grid-gallery.lukuro-updating,
    .lukuro-grid-gallery__item img,
    .lukuro-grid-gallery__show-more-icon,
    .lukuro-grid-lightbox {
        transition: none;
    }

    .lukuro-grid-gallery__item:hover img {
        transform: none;
    }
}