flipbook-bundle/public/assets/flipbook-module.css

.mod-pdf-flipbook {
    --flipbook-bg: #e0e0e0;
    --flipbook-text: #302d29;
    --flipbook-accent: #6f4f28;
    position: relative;
    padding: 3rem;
    background: var(--flipbook-bg);
}

.mod-pdf-flipbook:focus-visible {
    outline: 2px solid var(--flipbook-accent);
    outline-offset: 3px;
}

.mod-pdf-flipbook__status {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    margin-bottom: 0.8rem;
    font-size: 0.92rem;
    color: var(--flipbook-text);
}

.mod-pdf-flipbook__status::before {
    content: '';
    width: 0.9rem;
    height: 0.9rem;
    border: 2px solid rgba(48, 45, 41, 0.25);
    border-top-color: rgba(48, 45, 41, 0.85);
    border-radius: 50%;
    animation: mod-pdf-flipbook-spin 0.75s linear infinite;
}

.mod-pdf-flipbook__status.is-hidden {
    display: none;
}

.mod-pdf-flipbook__status.is-error {
    color: #9f1f1f;
}

.mod-pdf-flipbook__status.is-error::before {
    display: none;
}

.mod-pdf-flipbook__stage {
    position: relative;
    width: 100%;
    margin: 0 auto;
    background: #e0e0e0;
    z-index: 1;
    transition: opacity 1.3s ease 0.5s;
}

.mod-pdf-flipbook .c-flipbook {
    max-width: 100%;
}

.mod-pdf-flipbook .c-flipbook.is-booting,
.mod-pdf-flipbook .c-flipbook.is-booting .c-flipbook__page,
.mod-pdf-flipbook .c-flipbook.is-booting .c-flipbook__page::before {
    transition: none !important;
}

.mod-pdf-flipbook .c-flipbook__page {
    background: #fefdf9;
    overflow: hidden;
    border: 1px solid #e2dbcc;
}

.mod-pdf-flipbook .c-flipbook__page canvas {
    display: block;
    width: 100%;
    height: 100%;
    /* Pages that deviate from the document's dominant format are letterboxed
       inside the uniform page box instead of being stretched to fit it. */
    object-fit: contain;
}

.mod-pdf-flipbook__page-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: #6f675a;
    background: repeating-linear-gradient(
        -45deg,
        rgba(184, 176, 160, 0.18),
        rgba(184, 176, 160, 0.18) 14px,
        rgba(239, 235, 227, 0.28) 14px,
        rgba(239, 235, 227, 0.28) 28px
    );
}

/* Set while a canvas is mounted. Evicted pages show the placeholder again
   rather than a blank page. */
.mod-pdf-flipbook__page-loader.is-hidden {
    display: none;
}

.mod-pdf-flipbook__controls {
    position: relative;
    z-index: 20;
    display: flex;
    gap: 0.6rem;
    margin-top: 0.9rem;
    transition: opacity 1.3s ease 0.5s;
}

.mod-pdf-flipbook__error {
    margin-top: 0.8rem;
    color: #9f1f1f;
}

/* Set by the module once the browser confirms the Fullscreen API is usable. */
.mod-pdf-flipbook.is-fullscreen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100vw;
    height: 100vh;
    padding: 1.5rem;
    overflow: hidden;
}

.mod-pdf-flipbook.is-fullscreen .mod-pdf-flipbook__stage {
    width: 100%;
    margin: 0;
}

.mod-pdf-flipbook.is-fullscreen .mod-pdf-flipbook__status {
    margin-bottom: 0;
}

/* The equivalent alternative stays on the page itself; repeating it inside the
   viewer would only eat height the book can use. */
.mod-pdf-flipbook.is-fullscreen .mod-pdf-flipbook__download {
    display: none;
}

/* Text in a canvas is invisible to assistive technology and cannot be selected
   or searched, so the original file stays reachable as an equivalent
   alternative. */
.mod-pdf-flipbook__download {
    display: inline-block;
    margin-top: 0.9rem;
    font-size: 0.92rem;
    color: var(--flipbook-text);
}

@media (max-width: 767px) {
    .mod-pdf-flipbook__controls {
        justify-content: space-between;
    }
}

@keyframes mod-pdf-flipbook-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (prefers-reduced-motion: reduce) {
    .mod-pdf-flipbook__status::before {
        animation: none;
    }

    .mod-pdf-flipbook__stage,
    .mod-pdf-flipbook__controls {
        transition: none;
    }

    .mod-pdf-flipbook .c-flipbook__page,
    .mod-pdf-flipbook .c-flipbook__page::before {
        transition-duration: 1ms !important;
    }
}