.image-viewer {
    position: fixed;
    inset: 0;
    z-index: 1100;
    background: #faf9f7;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.image-viewer.is-open {
    opacity: 1;
    visibility: visible;
}

.image-viewer__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 2rem 0.5rem;
    flex-shrink: 0;
}

.image-viewer__meta {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #aaa;
}

.image-viewer__actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-left: auto;
}

.image-viewer__btn {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #888;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0;
    transition: color 0.2s ease;
}

.image-viewer__btn:hover,
.image-viewer__btn:focus-visible {
    color: #1a1a1a;
}

.image-viewer__stage {
    flex: 1;
    min-height: 0;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    touch-action: none;
    cursor: default;
}

.image-viewer__stage.is-zoomable {
    cursor: zoom-in;
}

.image-viewer__stage.is-zoomed {
    cursor: grab;
}

.image-viewer__stage.is-zoomed.is-panning {
    cursor: grabbing;
}

.image-viewer__frame {
    max-width: 100%;
    max-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.image-viewer.is-turn-next .image-viewer__frame.is-turning {
    opacity: 0;
    transform: translateX(-14px);
}

.image-viewer.is-turn-prev .image-viewer__frame.is-turning {
    opacity: 0;
    transform: translateX(14px);
}

.image-viewer__book {
    position: relative;
    display: inline-block;
    max-width: 100%;
    max-height: 100%;
    perspective: 1200px;
}

.image-viewer__page {
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-viewer__page--front {
    position: relative;
    transform-origin: left center;
    transform-style: preserve-3d;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    z-index: 2;
}

.image-viewer__page--under {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
}

.image-viewer:not(.image-viewer--book) .image-viewer__page--under,
.image-viewer:not(.image-viewer--book) .image-viewer__page-shade {
    display: none;
}

.image-viewer__page--under img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.image-viewer__page-shade {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.06), transparent 22%);
    z-index: 3;
}

.image-viewer--book.is-flipping-next .image-viewer__page--front {
    transform-origin: left center;
}

.image-viewer--book.is-flipping-prev .image-viewer__page--front {
    transform-origin: right center;
}

.image-viewer--book.is-flipping-next .image-viewer__page-shade {
    opacity: 1;
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.08), transparent 28%);
}

.image-viewer--book.is-flipping-prev .image-viewer__page-shade {
    opacity: 1;
    background: linear-gradient(270deg, rgba(0, 0, 0, 0.08), transparent 28%);
}

.image-viewer--book .image-viewer__frame {
    width: min(1100px, 92%);
    height: calc(100% - 0.5rem);
    max-width: 100%;
    max-height: 100%;
}

.image-viewer--book .image-viewer__book {
    display: block;
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
}

.image-viewer--book .image-viewer__page--front {
    position: absolute;
    inset: 0;
}

.image-viewer--book .image-viewer__zoom {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-viewer--book .image-viewer__zoom img,
.image-viewer--book .image-viewer__page--under img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

.image-viewer__hint {
    position: absolute;
    left: 50%;
    bottom: 1.35rem;
    transform: translateX(-50%);
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #b0aaa4;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    z-index: 5;
    white-space: nowrap;
}

.image-viewer__hint.is-visible {
    opacity: 1;
    visibility: visible;
}

.image-viewer--book .image-viewer__nav {
    display: none;
}

.image-viewer--book .image-viewer__stage.is-zoomable {
    cursor: grab;
}

.image-viewer__zoom {
    transform-origin: center center;
    will-change: transform;
}

.image-viewer__zoom img {
    max-width: min(1100px, 92vw);
    max-height: calc(100vh - 7rem);
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    background: transparent !important;
    -webkit-user-drag: none;
    user-select: none;
    pointer-events: none;
}

.image-viewer__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #c0bbb4;
    background: none;
    border: none;
    cursor: pointer;
    padding: 1.5rem 1rem;
    transition: color 0.2s ease;
    z-index: 2;
}

.image-viewer__nav:hover,
.image-viewer__nav:focus-visible {
    color: #1a1a1a;
}

.image-viewer__nav--prev { left: 0.25rem; }
.image-viewer__nav--next { right: 0.25rem; }

.image-viewer__nav[hidden],
.image-viewer__meta[hidden],
.image-viewer__origin[hidden],
.image-viewer__hint[hidden] {
    display: none !important;
}

.image-viewer__origin {
    align-self: center;
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #888;
    text-decoration: none;
    padding: 0.75rem 0 1.25rem;
    transition: color 0.2s ease;
}

.image-viewer__origin:hover {
    color: #1a1a1a;
}

@media (max-width: 768px) {
    .image-viewer__bar {
        padding: 1rem 1rem 0.25rem;
    }

    .image-viewer__zoom img {
        max-width: 94vw;
        max-height: calc(100vh - 6.5rem);
    }

    .image-viewer__nav {
        padding: 1rem 0.45rem;
    }
}