/* Keep the book separate from the site's existing carousel styles. */
:is(#flip-book, #flipbook-2, #flipbook-3) {
    --flip-duration: 760ms;
    width: 100%;
    margin: 1.5rem auto 0;
    outline-offset: 6px;
}

:is(#flip-book, #flipbook-2, #flipbook-3),
:is(#flip-book, #flipbook-2, #flipbook-3) * {
    box-sizing: border-box;
}

:is(#flip-book, #flipbook-2, #flipbook-3) [hidden] {
    display: none !important;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-pages {
    position: relative;
    width: 100%;
    aspect-ratio: 1638 / 1024;
    isolation: isolate;
    perspective: 1800px;
    background: #faf8f2;
    box-shadow: 0 2px 5px #0002, 0 12px 28px #0003;
}

#flipbook-2 .flipbook-pages {
    aspect-ratio: 8 / 5;
}

#flipbook-3 .flipbook-pages {
    aspect-ratio: 3452 / 2739;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-spread {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: flex;
    margin: 0;
    padding: 0;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-spread.is-current {
    z-index: 1;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-page {
    display: block;
    flex: 0 0 50%;
    width: 50%;
    max-width: none;
    height: 100%;
    margin: 0;
    border: 0;
    border-radius: 0;
    object-fit: contain;
    background: #fff;
    user-select: none;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-leaf {
    position: absolute;
    top: 0;
    z-index: 3;
    width: 50%;
    height: 100%;
    transform-style: preserve-3d;
    pointer-events: none;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-face {
    position: absolute;
    inset: 0;
    overflow: hidden;
    background: #fff;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-face .flipbook-page {
    width: 100%;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-face-back {
    transform: rotateY(180deg);
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-face::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, #0003, transparent 45%, #0001);
    opacity: 0;
    animation: flipbook-shade var(--flip-duration) ease-in-out both;
}

:is(#flip-book, #flipbook-2, #flipbook-3).is-turning-next .flipbook-leaf {
    left: 50%;
    transform-origin: left center;
    animation: flipbook-next var(--flip-duration) ease-in-out both;
}

:is(#flip-book, #flipbook-2, #flipbook-3).is-turning-prev .flipbook-leaf {
    left: 0;
    transform-origin: right center;
    animation: flipbook-prev var(--flip-duration) ease-in-out both;
}

:is(#flip-book, #flipbook-2, #flipbook-3).is-turning-next .is-current .flipbook-page-right,
:is(#flip-book, #flipbook-2, #flipbook-3).is-turning-prev .is-current .flipbook-page-left {
    visibility: hidden;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.25rem;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    min-height: 44px;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: #008541;
    color: #fff;
    cursor: pointer;
    box-shadow: none;
    transition: background-color 160ms ease;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-arrow svg {
    display: block;
    width: 24px;
    height: 24px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-arrow:hover:not(:disabled):not([aria-disabled="true"]) {
    background: #006330;
}

:is(#flip-book, #flipbook-2, #flipbook-3):focus-visible,
:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-arrow:focus-visible {
    outline: 3px solid #0072bc;
    outline-offset: 4px;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-arrow:disabled {
    background: #e7e7e7;
    color: #888;
    cursor: default;
}

:is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-status {
    min-width: 11em;
    color: #444;
    font: 400 0.875rem/1.4 Roboto, system-ui, sans-serif;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

@keyframes flipbook-next {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(-180deg); }
}

@keyframes flipbook-prev {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(180deg); }
}

@keyframes flipbook-shade {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

@media (max-width: 480px) {
    :is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-controls { gap: 0.5rem; }
    :is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-status { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
    :is(#flip-book, #flipbook-2, #flipbook-3) { --flip-duration: 0ms; }
    :is(#flip-book, #flipbook-2, #flipbook-3) .flipbook-arrow { transition: none; }
}