/**
 * Dynamic Image Gallery - Lightbox Styles
 *
 * Self-contained lightbox with keyboard navigation and touch support.
 *
 * @package Dynamic_Image_Gallery
 */

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

:root {
    --dig-lightbox-bg: rgba(0, 0, 0, 0.95);
    --dig-lightbox-color: #ffffff;
    --dig-lightbox-nav-size: 48px;
    --dig-lightbox-transition: 0.3s ease;
}

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

.dig-lightbox {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dig-lightbox-transition), visibility var(--dig-lightbox-transition);
}

.dig-lightbox[aria-hidden="false"] {
    opacity: 1;
    visibility: visible;
}

/* Overlay Background */
.dig-lightbox__overlay {
    position: absolute;
    inset: 0;
    background-color: var(--dig-lightbox-bg);
}

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

.dig-lightbox__content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    max-width: 100vw;
    max-height: 100vh;
    padding: 60px 80px;
    box-sizing: border-box;
}

@media (max-width: 768px) {
    .dig-lightbox__content {
        padding: 50px 20px;
    }
}

/* Image Wrapper */
.dig-lightbox__image-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    width: 100%;
    min-height: 0;
}

/* Main Image */
.dig-lightbox__image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 4px;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.dig-lightbox__image.loaded {
    opacity: 1;
    transform: scale(1);
}

/* Loading Spinner */
.dig-lightbox__image-wrapper::before {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: #fff;
    border-radius: 50%;
    animation: dig-lightbox-spin 0.8s linear infinite;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.dig-lightbox__image.loaded+.dig-lightbox__image-wrapper::before,
.dig-lightbox__image-wrapper:has(.loaded)::before {
    opacity: 0;
}

@keyframes dig-lightbox-spin {
    to {
        transform: rotate(360deg);
    }
}

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

/* Close Button */
.dig-lightbox__close {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--dig-lightbox-color);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    z-index: 10;
}

.dig-lightbox__close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.dig-lightbox__close:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

/* Navigation Arrows */
.dig-lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--dig-lightbox-nav-size);
    height: var(--dig-lightbox-nav-size);
    padding: 0;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--dig-lightbox-color);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    z-index: 10;
}

.dig-lightbox__nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.dig-lightbox__nav:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.dig-lightbox__nav--prev {
    left: 16px;
}

.dig-lightbox__nav--next {
    right: 16px;
}

.dig-lightbox__nav:disabled {
    opacity: 0.3;
    cursor: default;
}

@media (max-width: 768px) {
    .dig-lightbox__nav {
        width: 40px;
        height: 40px;
    }

    .dig-lightbox__nav--prev {
        left: 8px;
    }

    .dig-lightbox__nav--next {
        right: 8px;
    }
}

/* ==========================================================================
   Lightbox Info (Caption & Counter)
   ========================================================================== */

.dig-lightbox__info {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    max-width: calc(100% - 40px);
    text-align: center;
    color: var(--dig-lightbox-color);
    z-index: 10;
}

.dig-lightbox__caption {
    font-size: 1rem;
    font-weight: 500;
    max-width: 600px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dig-lightbox__counter {
    font-size: 0.8125rem;
    opacity: 0.7;
}

@media (max-width: 768px) {
    .dig-lightbox__info {
        bottom: 12px;
    }

    .dig-lightbox__caption {
        font-size: 0.875rem;
    }

    .dig-lightbox__counter {
        font-size: 0.75rem;
    }
}

/* ==========================================================================
   Animation Variants
   ========================================================================== */

/* Fade Animation (default) */
.dig-lightbox--animate-fade .dig-lightbox__image {
    transition: opacity 0.3s ease;
}

/* Zoom Animation */
.dig-lightbox--animate-zoom .dig-lightbox__image {
    transition: opacity 0.2s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dig-lightbox--animate-zoom .dig-lightbox__image:not(.loaded) {
    transform: scale(0.85);
}

/* Slide Animation */
.dig-lightbox--animate-slide .dig-lightbox__image {
    transition: opacity 0.2s ease, transform 0.3s ease;
}

.dig-lightbox--animate-slide.sliding-left .dig-lightbox__image:not(.loaded) {
    transform: translateX(40px);
}

.dig-lightbox--animate-slide.sliding-right .dig-lightbox__image:not(.loaded) {
    transform: translateX(-40px);
}

/* ==========================================================================
   Body Lock (prevent scroll when lightbox is open)
   ========================================================================== */

body.dig-lightbox-open {
    overflow: hidden;
}

/* ==========================================================================
   Focus Trap Styling
   ========================================================================== */

.dig-lightbox *:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 2px;
}