/* === Sticky Video === */
.bkbg-sv-app {
    display: block;
    position: relative;
}

.bkbg-sv-wrap {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

/* ── Inline player ── */
.bkbg-sv-ratio {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: #0f172a;
}

.bkbg-sv-iframe,
.bkbg-sv-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

.bkbg-sv-poster {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    transition: opacity 0.3s;
}

.bkbg-sv-poster.bkbg-sv-hidden {
    opacity: 0;
    pointer-events: none;
}

/* ── Overlay play button ── */
.bkbg-sv-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    cursor: pointer;
    transition: opacity 0.3s;
}

.bkbg-sv-overlay.bkbg-sv-hidden {
    opacity: 0;
    pointer-events: none;
}

.bkbg-sv-play-btn {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 3px solid rgba(255,255,255,0.9);
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    transition: transform 0.2s, background 0.2s;
    backdrop-filter: blur(4px);
    line-height: 1;
    padding-left: 5px;
}

.bkbg-sv-overlay:hover .bkbg-sv-play-btn {
    transform: scale(1.1);
    background: rgba(0,0,0,0.6);
}

.bkbg-sv-title-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px 20px 16px;
    background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 100%);
    color: #fff;
    pointer-events: none;
}

.bkbg-sv-title-text {
    font-family: var(--bksv-tt-font-family, inherit);
    font-size: var(--bksv-tt-font-size-d, 18px);
    line-height: var(--bksv-tt-line-height-d, var(--bksv-title-lh, 1.3));
    letter-spacing: var(--bksv-tt-letter-spacing-d, normal);
    word-spacing: var(--bksv-tt-word-spacing-d, normal);
    font-weight: var(--bksv-tt-font-weight, var(--bksv-title-fw, 700));
    font-style: var(--bksv-tt-font-style, normal);
    text-decoration: var(--bksv-tt-text-decoration, none);
    text-transform: var(--bksv-tt-text-transform, none);
    margin: 0 0 4px;
}

.bkbg-sv-subtitle-text {
    font-family: var(--bksv-st-font-family, inherit);
    font-size: var(--bksv-st-font-size-d, 13px);
    line-height: var(--bksv-st-line-height-d, var(--bksv-st-lh, 1.5));
    letter-spacing: var(--bksv-st-letter-spacing-d, normal);
    word-spacing: var(--bksv-st-word-spacing-d, normal);
    font-weight: var(--bksv-st-font-weight, var(--bksv-st-fw, 400));
    font-style: var(--bksv-st-font-style, normal);
    text-decoration: var(--bksv-st-text-decoration, none);
    text-transform: var(--bksv-st-text-transform, none);
    opacity: 0.8;
    margin: 0;
}

/* Responsive – typography */
@media (max-width: 1024px) {
    .bkbg-sv-title-text {
        font-size: var(--bksv-tt-font-size-t, var(--bksv-tt-font-size-d, 18px));
        line-height: var(--bksv-tt-line-height-t, var(--bksv-tt-line-height-d, var(--bksv-title-lh, 1.3)));
        letter-spacing: var(--bksv-tt-letter-spacing-t, var(--bksv-tt-letter-spacing-d, normal));
        word-spacing: var(--bksv-tt-word-spacing-t, var(--bksv-tt-word-spacing-d, normal));
    }
    .bkbg-sv-subtitle-text {
        font-size: var(--bksv-st-font-size-t, var(--bksv-st-font-size-d, 13px));
        line-height: var(--bksv-st-line-height-t, var(--bksv-st-line-height-d, var(--bksv-st-lh, 1.5)));
        letter-spacing: var(--bksv-st-letter-spacing-t, var(--bksv-st-letter-spacing-d, normal));
        word-spacing: var(--bksv-st-word-spacing-t, var(--bksv-st-word-spacing-d, normal));
    }
}
@media (max-width: 767px) {
    .bkbg-sv-title-text {
        font-size: var(--bksv-tt-font-size-m, var(--bksv-tt-font-size-t, var(--bksv-tt-font-size-d, 18px)));
        line-height: var(--bksv-tt-line-height-m, var(--bksv-tt-line-height-t, var(--bksv-tt-line-height-d, var(--bksv-title-lh, 1.3))));
        letter-spacing: var(--bksv-tt-letter-spacing-m, var(--bksv-tt-letter-spacing-t, var(--bksv-tt-letter-spacing-d, normal)));
        word-spacing: var(--bksv-tt-word-spacing-m, var(--bksv-tt-word-spacing-t, var(--bksv-tt-word-spacing-d, normal)));
    }
    .bkbg-sv-subtitle-text {
        font-size: var(--bksv-st-font-size-m, var(--bksv-st-font-size-t, var(--bksv-st-font-size-d, 13px)));
        line-height: var(--bksv-st-line-height-m, var(--bksv-st-line-height-t, var(--bksv-st-line-height-d, var(--bksv-st-lh, 1.5))));
        letter-spacing: var(--bksv-st-letter-spacing-m, var(--bksv-st-letter-spacing-t, var(--bksv-st-letter-spacing-d, normal)));
        word-spacing: var(--bksv-st-word-spacing-m, var(--bksv-st-word-spacing-t, var(--bksv-st-word-spacing-d, normal)));
    }
}

/* ── Sticky PiP player ── */
.bkbg-sv-sticky {
    position: fixed;
    z-index: 99999;
    box-shadow: 0 8px 32px rgba(0,0,0,0.45);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s;
    transform: scale(0.85);
    opacity: 0;
    pointer-events: none;
}

.bkbg-sv-sticky.bkbg-sv-sticky-visible {
    transform: scale(1);
    opacity: 1;
    pointer-events: auto;
}

.bkbg-sv-sticky-inner {
    position: relative;
    overflow: hidden;
}

.bkbg-sv-sticky-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    gap: 8px;
}

.bkbg-sv-sticky-title {
    font-size: 12px;
    color: #e2e8f0;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.bkbg-sv-sticky-btn {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-size: 16px;
    padding: 4px 6px;
    line-height: 1;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
    flex-shrink: 0;
}

.bkbg-sv-sticky-btn:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

/* Corner positioning */
.bkbg-sv-corner-br { bottom: 24px; right: 24px; }
.bkbg-sv-corner-bl { bottom: 24px; left: 24px;  }
.bkbg-sv-corner-tr { top: 24px;    right: 24px; }
.bkbg-sv-corner-tl { top: 24px;    left: 24px;  }