/* ==========================================================
   PORTFOLIO IMAGE LIGHTBOX
   Separate add-on stylesheet. Does not alter page layout.
========================================================== */

.portfolio-zoom,
.lightbox-image {
    cursor: zoom-in;
}

.portfolio-zoom:focus-visible,
.lightbox-image:focus-visible {
    outline: 3px solid #00bcd4;
    outline-offset: 4px;
}

body.lightbox-open {
    overflow: hidden;
}

.portfolio-lightbox {
    position: fixed;
    inset: 0;
    z-index: 99999;

    display: flex;
    justify-content: center;
    align-items: center;

    width: 100vw;
    height: 100vh;

    padding: 50px;
    box-sizing: border-box;

    background: rgba(10, 10, 10, 0.94);

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transition:
        opacity 0.2s ease,
        visibility 0.2s ease;
}

.portfolio-lightbox.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.portfolio-lightbox-image {
    position: static;

    display: block;

    width: auto;
    height: auto;

    max-width: calc(100vw - 100px);
    max-height: calc(100vh - 100px);

    margin: 0;

    object-fit: contain;

    box-shadow: 0 12px 38px rgba(0, 0, 0, 0.4);
}

/* Hide the generated alt-text caption.
   The image retains its alt attribute for accessibility. */
.portfolio-lightbox-caption {
    display: none;
}

.portfolio-lightbox-close {
    position: fixed;
    top: 18px;
    right: 24px;
    z-index: 100000;

    width: 48px;
    height: 48px;

    display: flex;
    justify-content: center;
    align-items: center;

    padding: 0;
    margin: 0;

    border: 0;
    background: transparent;

    color: white;

    font-family: Arial, sans-serif;
    font-size: 2.6rem;
    font-weight: 300;
    line-height: 1;

    cursor: pointer;
}

.portfolio-lightbox-close:hover,
.portfolio-lightbox-close:focus-visible {
    color: #00bcd4;
}

.portfolio-lightbox-close:focus-visible {
    outline: 2px solid #00bcd4;
    outline-offset: 3px;
}

@media (max-width: 768px) {

    .portfolio-lightbox {
        padding: 55px 18px 25px;
    }

    .portfolio-lightbox-image {
        max-width: calc(100vw - 36px);
        max-height: calc(100vh - 80px);
    }

    .portfolio-lightbox-close {
        top: 8px;
        right: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {

    .portfolio-lightbox {
        transition: none;
    }
}