/*
 * ImageLab - Gallery, Carousel & Lightbox Patterns
 * Version: 5.5.2
 * FIX: @media (max-width: 768px) → 767px (breakpoint standard)
 *
 * WCAG 2.2 Level AA Compliant
 */

/* ================================================================
 * POSTER + THUMBNAILS GALLERY LAYOUT (v5.5 - CENTERED)
 * ================================================================ */

.photo-gallery {
    display: grid;
    gap: 1rem;
    margin: var(--space-xl, 2rem) auto;
    max-width: 1400px;
    width: 100%;
}

/* Poster Image (First/Featured) - LARGE 16:9 */
.gallery-poster {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--glass-card-default, rgba(15, 22, 35, 0.6));
    backdrop-filter: var(--glass-blur-medium, blur(6px));
    -webkit-backdrop-filter: var(--glass-blur-medium, blur(6px));
    border: var(--glass-border, 1px solid rgba(183, 148, 246, 0.15));
    border-radius: var(--radius-lg, 1rem);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-base, 0.2s), box-shadow var(--transition-base, 0.2s);
    position: relative;
    display: block;
}

.gallery-poster:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover, 0 8px 32px rgba(0, 0, 0, 0.7), 0 0 20px rgba(183, 148, 246, 0.15));
    border-color: rgba(183, 148, 246, 0.3);
}

.gallery-poster:focus-visible {
    outline: 3px solid var(--color-accent-500, #f97316);
    outline-offset: 2px;
}

.gallery-poster .gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-base, 0.2s);
}

.gallery-poster:hover .gallery-image {
    transform: scale(1.05);
}

/* Poster Badge (Featured Indicator) */
.poster-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    background: rgba(183, 148, 246, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-full, 9999px);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Thumbnail Grid (Remaining Images) */
.gallery-thumbnails {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.gallery-thumbnail {
    aspect-ratio: 4 / 3;
    background: var(--glass-card-default, rgba(15, 22, 35, 0.6));
    backdrop-filter: var(--glass-blur-medium, blur(6px));
    -webkit-backdrop-filter: var(--glass-blur-medium, blur(6px));
    border: var(--glass-border, 1px solid rgba(183, 148, 246, 0.15));
    border-radius: var(--radius-base, 0.5rem);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-base, 0.2s), box-shadow var(--transition-base, 0.2s);
    position: relative;
    display: block;
}

.gallery-thumbnail:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5), 0 0 15px rgba(183, 148, 246, 0.1);
    border-color: rgba(183, 148, 246, 0.3);
}

.gallery-thumbnail:focus-visible {
    outline: 3px solid var(--color-accent-500, #f97316);
    outline-offset: 2px;
}

.gallery-thumbnail .gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-base, 0.2s);
}

.gallery-thumbnail:hover .gallery-image {
    transform: scale(1.05);
}

/* Thumbnail Counter */
.thumbnail-counter {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    padding: 0.25rem 0.5rem;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-radius: var(--radius-sm, 0.25rem);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
    pointer-events: none;
}

/* ================================================================
 * GALLERY SECTIONS (CENTERED HEADINGS)
 * ================================================================ */

.gallery-section {
    margin: var(--space-xxl, 3rem) auto;
    max-width: 1400px;
    width: 100%;
}

.gallery-title {
    color: var(--color-primary-400, #ddd6fe);
    font-size: 1.5rem;
    font-weight: 600;
    margin: var(--space-xl, 2rem) auto var(--space-md, 1rem);
    text-align: center;
    max-width: 1200px;
}

.gallery-description {
    text-align: center;
    max-width: 900px;
    margin: 0 auto var(--space-lg, 1.5rem);
    color: var(--text-secondary, #e0e4ea);
    line-height: 1.7;
}

/* ================================================================
 * LEGACY GALLERY LAYOUTS (Keep for backwards compatibility)
 * ================================================================ */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg, 2rem);
    margin-top: var(--space-xl, 3rem);
}

.gallery-masonry {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    grid-auto-rows: 20px;
    gap: var(--space-md, 1.5rem);
    margin-top: var(--space-xl, 3rem);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-base, 0.5rem);
    background: var(--glass-card-default, rgba(15, 22, 35, 0.6));
    cursor: pointer;
    transition: transform var(--transition-base, 0.2s), box-shadow var(--transition-base, 0.2s);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.gallery-item:focus-visible {
    outline: 3px solid var(--color-accent-500, #f97316);
    outline-offset: 2px;
}

.gallery-item[tabindex="0"] {
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-base, 0.2s);
}

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

.gallery-masonry .gallery-item {
    grid-row-end: span var(--row-span, 10);
}

/* ================================================================
 * GALLERY IMAGE BUTTONS (For Lightbox Compatibility)
 * ================================================================ */

.grid-image-btn {
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
    display: block;
    width: 100%;
    position: relative;
    font-family: inherit;
    text-align: left;
}

.grid-image-btn:focus-visible {
    outline: 3px solid var(--color-accent-500, #f97316);
    outline-offset: 2px;
    border-radius: var(--radius-base, 0.5rem);
}

.grid-image-btn:hover {
    transform: translateY(-4px);
}

.grid-image-btn.gallery-item {
    all: unset;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-base, 0.5rem);
    background: var(--glass-card-default, rgba(15, 22, 35, 0.6));
    cursor: pointer;
    transition: transform var(--transition-base, 0.2s), box-shadow var(--transition-base, 0.2s);
    display: block;
    width: 100%;
}

.grid-image-btn.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.grid-image-btn.gallery-item:focus-visible {
    outline: 3px solid var(--color-accent-500, #f97316);
    outline-offset: 2px;
}

/* ================================================================
 * GALLERY OVERLAY
 * ================================================================ */

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(10, 14, 26, 0.95) 0%,
        rgba(10, 14, 26, 0.6) 50%,
        transparent 100%
    );
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-md, 1.5rem);
    opacity: 0;
    transition: opacity var(--transition-base, 0.2s);
}

.gallery-item:hover .gallery-overlay,
.gallery-item:focus-within .gallery-overlay,
.grid-image-btn:hover .gallery-overlay,
.grid-image-btn:focus-visible .gallery-overlay {
    opacity: 1;
}

.gallery-overlay h3 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--space-xs, 0.25rem);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.gallery-overlay p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

/* Category Badge */
.gallery-badge {
    position: absolute;
    top: var(--space-sm, 0.5rem);
    right: var(--space-sm, 0.5rem);
    padding: var(--space-xs, 0.25rem) var(--space-sm, 0.5rem);
    background: var(--glass-card-intense, rgba(26, 35, 50, 0.8));
    backdrop-filter: var(--glass-blur-heavy, blur(8px));
    -webkit-backdrop-filter: var(--glass-blur-heavy, blur(8px));
    border: var(--glass-border);
    border-radius: var(--radius-sm, 0.25rem);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}

/* ================================================================
 * LIGHTBOX MODAL (FIXED NAVIGATION BUTTONS)
 * ================================================================ */

.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 26, 0.98);
    z-index: 1050;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg, 2rem);
    opacity: 0;
    transition: opacity var(--transition-base, 0.2s);
}

.lightbox.active,
.lightbox[aria-hidden="false"] {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.lightbox-image,
.lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-lg, 1rem);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
    transition: opacity 0.3s ease;
}

/* ================================================================
 * LIGHTBOX NAVIGATION BUTTONS
 * ================================================================ */

.lightbox-close {
    position: fixed;
    top: var(--space-lg, 2rem);
    right: var(--space-lg, 2rem);
    z-index: 1055;
    min-width: 48px;
    min-height: 48px;
    width: 48px;
    height: 48px;
    background: var(--glass-card-default, rgba(15, 22, 35, 0.8));
    backdrop-filter: var(--glass-blur-heavy, blur(8px));
    -webkit-backdrop-filter: var(--glass-blur-heavy, blur(8px));
    border: var(--glass-border, 1px solid rgba(183, 148, 246, 0.15));
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast, 0.15s);
    font-size: 1.5rem;
    font-weight: 300;
    line-height: 1;
    padding: 0;
}

.lightbox-nav,
.lightbox-prev,
.lightbox-next {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1055;
    min-width: 48px;
    min-height: 48px;
    width: 56px;
    height: 56px;
    background: var(--glass-card-default, rgba(15, 22, 35, 0.8));
    backdrop-filter: var(--glass-blur-heavy, blur(8px));
    -webkit-backdrop-filter: var(--glass-blur-heavy, blur(8px));
    border: var(--glass-border, 1px solid rgba(183, 148, 246, 0.15));
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast, 0.15s);
    font-size: 2.5rem;
    font-weight: 300;
    line-height: 1;
    padding: 0;
}

.lightbox-close:hover {
    background: var(--color-accent-500, #f97316);
    border-color: var(--color-accent-600, #ea580c);
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
}

.lightbox-nav:hover,
.lightbox-prev:not(:disabled):hover,
.lightbox-next:not(:disabled):hover {
    background: var(--glass-card-hover, rgba(21, 29, 45, 0.9));
    border: var(--glass-border-strong, 1px solid rgba(183, 148, 246, 0.25));
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 8px 32px rgba(183, 148, 246, 0.3);
}

.lightbox-close:focus-visible,
.lightbox-nav:focus-visible,
.lightbox-prev:focus-visible,
.lightbox-next:focus-visible {
    outline: 3px solid var(--color-accent-500, #f97316);
    outline-offset: 2px;
    z-index: 1056;
}

.lightbox-nav-prev,
.lightbox-prev {
    left: var(--space-lg, 2rem);
}

.lightbox-nav-next,
.lightbox-next {
    right: var(--space-lg, 2rem);
}

.lightbox-prev:disabled,
.lightbox-next:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
    background: var(--glass-card-default, rgba(15, 22, 35, 0.5));
}

.lightbox-prev:disabled:hover,
.lightbox-next:disabled:hover {
    transform: translateY(-50%);
}

/* ================================================================
 * LIGHTBOX CAPTION & COUNTER
 * ================================================================ */

.lightbox-caption {
    margin-top: var(--space-md, 1rem);
    padding: var(--space-md, 1rem) var(--space-lg, 1.5rem);
    background: var(--glass-card-default, rgba(15, 22, 35, 0.8));
    backdrop-filter: var(--glass-blur-medium, blur(6px));
    border: var(--glass-border, 1px solid rgba(183, 148, 246, 0.15));
    border-radius: var(--radius-md, 0.5rem);
    color: var(--text-secondary, #e0e4ea);
    font-size: 0.875rem;
    max-width: 600px;
    text-align: center;
    line-height: 1.6;
}

.lightbox-caption.error {
    background: rgba(220, 38, 38, 0.2);
    border-color: rgba(220, 38, 38, 0.3);
    color: #fca5a5;
}

.lightbox-counter {
    position: fixed;
    top: var(--space-lg, 2rem);
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-sm, 0.5rem) var(--space-md, 1rem);
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-radius: var(--radius-full, 9999px);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    z-index: 1054;
    pointer-events: none;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ================================================================
 * v1.2 ENHANCEMENTS (Loading, Animations, Mobile)
 * ================================================================ */

.lightbox.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    margin: -30px 0 0 -30px;
    border: 4px solid transparent;
    border-top-color: var(--color-primary-500, #b794f6);
    border-right-color: var(--color-primary-400, #ddd6fe);
    border-radius: 50%;
    animation: lightboxSpinner 0.8s linear infinite;
    z-index: 1055;
}

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

.lightbox.loading .lightbox-img,
.lightbox.loading .lightbox-image {
    opacity: 0.7;
}

.lightbox-opening {
    animation: lightboxFadeIn 0.3s ease;
}

.lightbox-opening .lightbox-content {
    animation: lightboxScaleIn 0.3s ease;
}

.lightbox-closing {
    animation: lightboxFadeOut 0.2s ease;
}

.lightbox-closing .lightbox-content {
    animation: lightboxScaleOut 0.2s ease;
}

@keyframes lightboxFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes lightboxFadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes lightboxScaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes lightboxScaleOut {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(0.95); opacity: 0; }
}

.lightbox-img,
.lightbox-image {
    transition: opacity 0.2s ease;
}

.lightbox:not(.loading) .lightbox-img,
.lightbox:not(.loading) .lightbox-image {
    opacity: 1;
}

/* ================================================================
 * RESPONSIVE ADJUSTMENTS
 * ================================================================ */

@media (max-width: 1024px) {
    .gallery-thumbnails {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--space-md, 1.5rem);
    }

    .gallery-masonry {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--space-md, 1.5rem);
    }
}

/* FIX: 768px → 767px (breakpoint standard) */
@media (max-width: 767px) {
    .photo-gallery {
        gap: var(--space-md, 1rem);
        margin: var(--space-lg, 1.5rem) auto;
    }

    .gallery-thumbnails {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.75rem;
    }

    .poster-badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    .thumbnail-counter {
        font-size: 0.7rem;
        padding: 0.2rem 0.4rem;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--space-sm, 1rem);
    }

    .gallery-masonry {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
    }

    .gallery-masonry .gallery-item {
        grid-row-end: auto;
    }

    .lightbox {
        padding: var(--space-sm, 0.5rem);
    }

    .lightbox-close,
    .lightbox-prev,
    .lightbox-next {
        width: 48px;
        height: 48px;
        min-width: 48px;
        min-height: 48px;
        font-size: 1.25rem;
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 2rem;
    }

    .lightbox-close {
        top: var(--space-md, 1rem);
        right: var(--space-md, 1rem);
    }

    .lightbox-prev {
        left: var(--space-md, 1rem);
    }

    .lightbox-next {
        right: var(--space-md, 1rem);
    }

    .lightbox-counter {
        top: var(--space-md, 1rem);
        font-size: 0.75rem;
    }

    .lightbox-caption {
        font-size: 0.75rem;
        padding: var(--space-sm, 0.5rem) var(--space-md, 1rem);
    }

    .gallery-poster,
    .gallery-thumbnail {
        -webkit-tap-highlight-color: rgba(183, 148, 246, 0.1);
    }

    .gallery-thumbnail:active {
        transform: scale(0.98);
    }
}

@media (max-width: 480px) {
    .gallery-thumbnails {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

/* Landscape Mobile — already correct */
@media (max-width: 767px) and (orientation: landscape) {
    .lightbox-img,
    .lightbox-image {
        max-height: 90vh;
    }

    .lightbox-caption {
        margin-top: var(--space-sm, 0.5rem);
    }

    .lightbox-counter {
        bottom: 10px;
        top: auto;
        font-size: 0.875rem;
    }

    .lightbox-close {
        top: 10px;
        right: 10px;
    }

    .lightbox-prev,
    .lightbox-next {
        top: 50%;
        transform: translateY(-50%);
    }
}

/* ================================================================
 * ACCESSIBILITY
 * ================================================================ */

@media (prefers-reduced-motion: reduce) {
    .gallery-item,
    .gallery-item img,
    .gallery-poster,
    .gallery-poster .gallery-image,
    .gallery-thumbnail,
    .gallery-thumbnail .gallery-image,
    .lightbox,
    .lightbox-prev,
    .lightbox-next,
    .lightbox-close,
    .grid-image-btn {
        transition: none !important;
        animation: none !important;
    }

    .gallery-item:hover,
    .gallery-poster:hover,
    .gallery-thumbnail:hover,
    .lightbox-prev:hover,
    .lightbox-next:hover,
    .lightbox-close:hover,
    .grid-image-btn:hover {
        transform: none !important;
    }

    .lightbox-prev:not(:disabled):hover,
    .lightbox-next:not(:disabled):hover {
        transform: translateY(-50%) !important;
    }

    .lightbox-opening,
    .lightbox-closing,
    .lightbox-opening .lightbox-content,
    .lightbox-closing .lightbox-content {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }

    .lightbox.loading::after {
        animation: none;
        border-color: var(--color-primary-400, #ddd6fe);
    }
}

@media (prefers-contrast: high) {
    .gallery-item,
    .gallery-poster,
    .gallery-thumbnail,
    .lightbox-close,
    .lightbox-prev,
    .lightbox-next,
    .grid-image-btn {
        border-width: 2px;
    }

    .lightbox {
        background: rgba(0, 0, 0, 1);
    }

    .lightbox-close,
    .lightbox-prev,
    .lightbox-next {
        border: 2px solid white;
    }

    .lightbox-counter,
    .poster-badge,
    .thumbnail-counter {
        border: 1px solid white;
    }
}

@media print {
    .lightbox,
    .lightbox-close,
    .lightbox-prev,
    .lightbox-next,
    .lightbox-counter {
        display: none !important;
    }
}

/* ================================================================
 * END OF 06-gallery.css v5.5.2
 * ================================================================ */