.pfp-flipbook {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #e8e8ec;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
}

.pfp-flipbook__stage {
    width: 100%;
    flex: 1;
    display: flex;
    align-items: safe center;
    justify-content: safe center;
    padding: 24px 12px 8px;
    min-height: 520px;
    overflow: hidden;
}

/* A zoom > 1 lo stage diventa scrollabile per spostarsi sul libro ingrandito. */
.pfp-flipbook__stage.is-zoomed {
    overflow: auto;
    cursor: grab;
}

.pfp-flipbook__stage.is-zoomed.is-panning {
    cursor: grabbing;
}

.pfp-flipbook__sizer {
    position: relative;
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Il libro mantiene le sue dimensioni reali; lo zoom è solo visivo (transform),
   così non vengono alterate le proporzioni né la logica di sfoglio. */
.pfp-flipbook__stage .stf__parent {
    transform: scale(var(--pfp-zoom, 1));
    transform-origin: center center;
    transition: transform 0.2s ease;
}

.pfp-flipbook__loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(232, 232, 236, 0.9);
    color: #2a2a33;
    z-index: 5;
    font-size: 1rem;
}

.pfp-flipbook.is-ready .pfp-flipbook__loader {
    display: none;
}

.pfp-flipbook__controls {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px 18px;
}

.pfp-flipbook__btn {
    appearance: none;
    border: 0;
    background: rgba(0, 0, 0, 0.06);
    color: #2a2a33;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    transition: background 0.2s ease, transform 0.2s ease;
}

.pfp-flipbook__btn:hover {
    background: rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

.pfp-flipbook__counter {
    color: #2a2a33;
    min-width: 80px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.pfp-flipbook--loading,
.pfp-flipbook--error {
    padding: 24px;
    color: #2a2a33;
    text-align: center;
    background: #dcdce1;
    border-radius: 12px;
}

.pfp-download-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    border-radius: 8px;
    background: #2271b1;
    color: #fff !important;
    text-decoration: none;
    font-weight: 600;
}

.pfp-download-button:hover {
    background: #135e96;
    color: #fff !important;
}

.pfp-flipbook:fullscreen {
    border-radius: 0;
}

.pfp-flipbook:fullscreen .pfp-flipbook__stage {
    min-height: calc(100vh - 80px);
}