/**
 * Shared Lightbox Component
 * Used by: bulk_generator_job.html, prompt_detail.html
 * Session 141 — extracted from bulk-generator-job.css and prompt-detail.css
 */

.lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.lightbox-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

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

.lightbox-image {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-lg, 0.5rem);
    display: block;
}

/* Close button — absolutely positioned top-right of overlay, not in flow */
.lightbox-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.6);
    color: white;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.15s ease;
    z-index: 10000; /* above the image */
}

.lightbox-close:hover {
    background: rgba(0, 0, 0, 0.75);
    border-color: rgba(255, 255, 255, 0.9);
}

.lightbox-close:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 2px rgba(0, 0, 0, 0.65),
        0 0 0 4px rgba(255, 255, 255, 0.9);
}

/* Open in new tab link — below image, centered */
.lightbox-open-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    transition: color 0.15s, border-color 0.15s;
}

.lightbox-open-link:hover {
    color: white;
    border-color: rgba(255, 255, 255, 0.7);
}

.lightbox-open-link:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 2px rgba(0, 0, 0, 0.65),
        0 0 0 4px rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.9);
}

@media (prefers-reduced-motion: reduce) {
    .lightbox-overlay { transition: none; }
    .lightbox-close { transition: none; }
    .lightbox-open-link { transition: none; }
}


/* Makes Lightbox positioning appear in the upper
right corner of the image on mostly desktop screens */
@media (min-width: 1000px) {
    .lightbox-open-link {
        position: absolute;
        right: 0;}
}

/* DEF-190-G: shown while the full image loads (cold network fetch on the
   List, which displays thumbs). Hidden on the image 'load' event. */
.lightbox-spinner {
    position: absolute;
    top: 50%; left: 50%;
    width: 40px; height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: lightboxSpin 0.8s linear infinite;
    display: none;
}
.lightbox-overlay.is-loading .lightbox-spinner { display: block; }
@keyframes lightboxSpin { to { transform: rotate(360deg); } }

/* Reduced-motion: keep the loading indicator visible (presence still
   signals "loading") but stop the spin. */
@media (prefers-reduced-motion: reduce) {
    .lightbox-spinner { animation: none; }
}