/* Service Image Switcher — full image stage with bottom service navigation. */
.bkbg-sis-wrap,
.bkbg-sis-wrap * {
    box-sizing: border-box;
}

.bkbg-sis-wrap {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--bkbg-sis-radius, 0);
    background: var(--bkbg-sis-inactive, #171c3d);
}

.bkbg-sis-header {
    padding: 56px 24px 32px;
    text-align: center;
    background: var(--bkbg-sis-header-bg, #fff);
}

.bkbg-sis-section-title {
    margin: 0;
    color: var(--bkbg-sis-header-title, #20243a);
    font-size: var(--bkbg-sis-section-title-size, 36px);
    font-weight: 700;
    line-height: 1.2;
}

.bkbg-sis-section-title::after {
    content: '';
    display: block;
    width: 64px;
    height: 3px;
    margin: 18px auto 0;
    background: var(--bkbg-sis-active, #e72e2d);
}

.bkbg-sis-section-description {
    max-width: 760px;
    margin: 18px auto 0;
    color: var(--bkbg-sis-header-desc, #4b5268);
    font-size: 16px;
    line-height: 1.75;
}

.bkbg-sis-visual {
    position: relative;
    height: var(--bkbg-sis-height, 620px);
    min-height: 360px;
    overflow: hidden;
    background: var(--bkbg-sis-inactive, #171c3d);
    isolation: isolate;
}

.bkbg-sis-stage,
.bkbg-sis-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.bkbg-sis-slide {
    visibility: hidden;
    opacity: 0;
    z-index: 0;
    transition: opacity var(--bkbg-sis-duration, 500ms) ease, visibility 0s linear var(--bkbg-sis-duration, 500ms);
    pointer-events: none;
}

.bkbg-sis-slide.is-active {
    visibility: visible;
    opacity: 1;
    z-index: 1;
    transition-delay: 0s;
    pointer-events: auto;
}

.bkbg-sis-image,
.bkbg-sis-placeholder {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.bkbg-sis-image {
    display: block;
    object-fit: cover;
    transform: scale(1.015);
    transition: transform var(--bkbg-sis-duration, 500ms) ease;
}

.bkbg-sis-slide.is-active .bkbg-sis-image {
    transform: scale(1);
}

.bkbg-sis-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    color: rgba(255, 255, 255, 0.72);
    background: linear-gradient(135deg, #2d3652, #12182d);
    font-size: 14px;
    text-align: center;
}

.bkbg-sis-shade {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: var(--bkbg-sis-overlay, #08101f);
    opacity: var(--bkbg-sis-overlay-opacity, 0.48);
    pointer-events: none;
}

.bkbg-sis-content-shell {
    position: absolute;
    inset: 0 0 124px;
    z-index: 2;
    display: flex;
    align-items: center;
    width: min(100%, var(--bkbg-sis-content-width, 1200px));
    margin: 0 auto;
    padding: 48px clamp(24px, 5vw, 72px);
    color: var(--bkbg-sis-text, #fff);
}

.bkbg-sis-content {
    max-width: 680px;
    opacity: 0;
    transform: translateY(18px);
    transition: opacity var(--bkbg-sis-duration, 500ms) ease, transform var(--bkbg-sis-duration, 500ms) ease;
}

.bkbg-sis-slide.is-active .bkbg-sis-content {
    opacity: 1;
    transform: translateY(0);
}

.bkbg-sis-eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    padding: 5px 10px;
    border: 1px solid rgba(255, 255, 255, 0.58);
    border-radius: 2px;
    color: inherit;
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.08em;
}

.bkbg-sis-content-title {
    margin: 0;
    color: inherit;
    font-size: var(--bkbg-sis-content-title-size, 44px);
    font-weight: 700;
    line-height: 1.15;
    text-wrap: balance;
}

.bkbg-sis-content-description {
    max-width: 620px;
    margin: 18px 0 0;
    color: inherit;
    font-size: 17px;
    line-height: 1.65;
}

.bkbg-sis-link {
    display: inline-flex;
    align-items: center;
    min-height: 46px;
    margin-top: 26px;
    padding: 10px 18px;
    border: 1px solid currentColor;
    border-radius: 3px;
    color: inherit;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.2;
    text-decoration: none;
    transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.bkbg-sis-link:hover {
    color: var(--bkbg-sis-inactive, #171c3d);
    background: var(--bkbg-sis-text, #fff);
    transform: translateY(-1px);
}

.bkbg-sis-link:focus-visible,
.bkbg-sis-tab:focus-visible {
    outline: 3px solid #fff;
    outline-offset: -5px;
}

.bkbg-sis-navigation {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 4;
    display: grid;
    grid-template-columns: repeat(var(--bkbg-sis-count, 4), minmax(0, 1fr));
    min-height: 124px;
    background: var(--bkbg-sis-inactive, #171c3d);
    background: color-mix(in srgb, var(--bkbg-sis-inactive, #171c3d) 88%, transparent);
}

.bkbg-sis-tab {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 13px;
    min-width: 0;
    min-height: 124px;
    padding: 20px clamp(14px, 2vw, 30px);
    border: 0;
    border-right: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 0;
    color: var(--bkbg-sis-nav-text, #fff);
    background: var(--bkbg-sis-inactive, #171c3d);
    background: color-mix(in srgb, var(--bkbg-sis-inactive, #171c3d) 88%, transparent);
    font: inherit;
    text-align: left;
    cursor: pointer;
    transition: background-color var(--bkbg-sis-duration, 500ms) ease;
}

.bkbg-sis-tab:last-child {
    border-right: 0;
}

.bkbg-sis-tab::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 3px;
    background: transparent;
}

.bkbg-sis-tab:hover,
.bkbg-sis-tab.is-active {
    background: var(--bkbg-sis-active, #e72e2d);
}

.bkbg-sis-tab.is-active::before {
    background: rgba(255, 255, 255, 0.92);
}

.bkbg-sis-tab-number {
    flex: 0 0 auto;
    color: inherit;
    font-size: 13px;
    font-weight: 800;
    opacity: 0.78;
}

.bkbg-sis-tab-copy {
    display: block;
    min-width: 0;
}

.bkbg-sis-tab-title,
.bkbg-sis-tab-description {
    display: block;
    color: inherit;
}

.bkbg-sis-tab-title {
    overflow: hidden;
    font-size: var(--bkbg-sis-nav-title-size, 18px);
    font-weight: 700;
    line-height: 1.3;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bkbg-sis-tab-description {
    display: -webkit-box;
    overflow: hidden;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.45;
    opacity: 0.82;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

/* Inspector-only item controls. */
.bkbg-sis-editor-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.bkbg-sis-editor-row {
    display: flex;
    align-items: center;
    gap: 5px;
    min-width: 0;
    padding: 6px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: #f6f7f7;
    cursor: pointer;
}

.bkbg-sis-editor-row.is-selected {
    border-color: #3858e9;
    background: #eef1ff;
}

.bkbg-sis-editor-thumb {
    display: block;
    flex: 0 0 38px;
    width: 38px;
    height: 30px;
    border-radius: 3px;
    object-fit: cover;
}

.bkbg-sis-editor-thumb.is-empty {
    background: #dcdcde;
}

.bkbg-sis-editor-name {
    flex: 1 1 auto;
    overflow: hidden;
    font-size: 12px;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bkbg-sis-editor-row .components-button.has-icon {
    min-width: 24px;
    width: 24px;
    height: 24px;
    padding: 2px;
}

.bkbg-sis-editor-fields {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid #ddd;
}

.bkbg-sis-editor-help {
    margin: 8px 0 0;
    color: #646970;
    font-size: 11px;
}

@media (max-width: 1024px) {
    .bkbg-sis-navigation {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        min-height: 176px;
    }

    .bkbg-sis-tab {
        min-height: 88px;
        padding: 14px 18px;
    }

    .bkbg-sis-content-shell {
        bottom: 176px;
    }
}

@media (max-width: 767px) {
    .bkbg-sis-header {
        padding: 40px 20px 26px;
    }

    .bkbg-sis-section-title {
        font-size: clamp(26px, 8vw, var(--bkbg-sis-section-title-size, 36px));
    }

    .bkbg-sis-visual {
        height: auto;
        min-height: 0;
        overflow: visible;
    }

    .bkbg-sis-stage {
        position: relative;
        height: var(--bkbg-sis-mobile-height, 380px);
        overflow: hidden;
    }

    .bkbg-sis-content-shell {
        inset: 0;
        align-items: flex-end;
        padding: 32px 22px;
    }

    .bkbg-sis-content-title {
        font-size: clamp(28px, 9vw, var(--bkbg-sis-content-title-size, 44px));
    }

    .bkbg-sis-content-description {
        margin-top: 12px;
        font-size: 15px;
        line-height: 1.55;
    }

    .bkbg-sis-link {
        min-height: 42px;
        margin-top: 18px;
    }

    .bkbg-sis-navigation {
        position: relative;
        display: flex;
        min-height: 0;
        overflow-x: auto;
        overscroll-behavior-x: contain;
        scroll-snap-type: x mandatory;
        scrollbar-width: thin;
    }

    .bkbg-sis-tab {
        flex: 0 0 78%;
        min-height: 92px;
        padding: 15px 18px;
        scroll-snap-align: start;
    }
}

@media (prefers-reduced-motion: reduce) {
    .bkbg-sis-slide,
    .bkbg-sis-image,
    .bkbg-sis-content,
    .bkbg-sis-tab,
    .bkbg-sis-link {
        transition: none !important;
    }
}