.warta-book-app {
    --warta-wine: #4a0d18;
    --warta-gold: #d6b15d;
    --warta-paper: #fff9ec;
}

.warta-book-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding: 0.75rem 1rem;
    margin-bottom: 0;
    border-radius: 0;
    background: linear-gradient(135deg, rgba(74, 13, 24, 0.08), rgba(214, 177, 93, 0.18));
    border: none;
    border-bottom: 1px solid rgba(74, 13, 24, 0.12);
}

.warta-book-toolbar__info {
    color: var(--warta-wine);
    font-weight: 600;
}

.warta-book-toolbar__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.warta-book-btn {
    border: none;
    border-radius: 999px;
    padding: 0.55rem 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.warta-book-btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

.warta-book-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.warta-book-btn--primary {
    background: var(--warta-wine);
    color: #fff;
    box-shadow: 0 8px 20px rgba(74, 13, 24, 0.2);
}

.warta-book-btn--ghost {
    background: #fff;
    color: var(--warta-wine);
    border: 1px solid rgba(74, 13, 24, 0.18);
}

.warta-book-stage {
    position: relative;
    width: 100%;
    min-height: 82vh;
    height: 82vh;
    padding: 0;
    border-radius: 0;
    background: #1a1014;
    overflow: hidden;
}

.warta-book-loading,
.warta-book-error {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: #fff;
    text-align: center;
    padding: 1rem;
    z-index: 2;
}

.warta-book-loading__spinner {
    width: 52px;
    height: 52px;
    border: 4px solid rgba(255, 255, 255, 0.18);
    border-top-color: var(--warta-gold);
    border-radius: 50%;
    animation: warta-spin 0.9s linear infinite;
}

.warta-book-loading__text,
.warta-book-error__text {
    margin: 0;
    color: rgba(255, 248, 232, 0.95);
}

.warta-book-hint {
    position: absolute;
    left: 50%;
    bottom: 0.65rem;
    transform: translateX(-50%);
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 249, 236, 0.92);
    color: var(--warta-wine);
    font-size: 0.82rem;
    font-weight: 600;
    z-index: 3;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22);
    pointer-events: none;
}

.warta-book-wrap {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 0.75rem 0.75rem 2.75rem;
    box-sizing: border-box;
    overflow: hidden;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.warta-book-wrap.is-ready {
    opacity: 1;
    transform: translateY(0);
}

.warta-book-wrap.is-hidden {
    display: none;
}

#warta-book {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    margin: 0 auto;
}

.warta-book-page {
    width: 100%;
    height: 100%;
    background: #fff;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.warta-book-page__canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
}

.warta-book-page__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: #fff;
    color: #745b62;
}

.warta-book-page__placeholder-text {
    font-size: 0.9rem;
    font-weight: 600;
}

#warta-book .stf__item .warta-book-page,
#warta-book .stf__item .warta-book-page__canvas {
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.warta-book-fallback {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 0;
    background: #fff;
}

@keyframes warta-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 991px) {
    .warta-book-stage {
        min-height: 72vh;
        height: 72vh;
    }

    .warta-book-wrap {
        padding: 0.5rem 0.5rem 2.5rem;
    }
}

@media (max-width: 767px) {
    .warta-book-stage {
        min-height: 68vh;
        height: 68vh;
    }

    .warta-book-toolbar {
        align-items: stretch;
    }

    .warta-book-toolbar__info {
        text-align: center;
        width: 100%;
    }

    .warta-book-toolbar__actions {
        width: 100%;
        justify-content: center;
    }

    .warta-book-btn {
        padding: 0.48rem 0.8rem;
        font-size: 0.82rem;
    }

    .warta-book-hint {
        font-size: 0.72rem;
        max-width: calc(100% - 1.5rem);
        text-align: center;
        line-height: 1.35;
    }
}

@media (max-width: 420px) {
    .warta-book-toolbar__actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.45rem;
    }

    .warta-book-btn {
        width: 100%;
        text-align: center;
    }
}