.bkbg-vg-wrapper {
    box-sizing: border-box;
}
.bkbg-vg-section-hdr {
    text-align: center;
    margin-bottom: 28px;
}
.bkbg-vg-section-title {
    font-family:      var(--bkvg-stt-ff, inherit);
    font-size:        var(--bkvg-stt-fsd, 32px);
    font-weight:      var(--bkvg-stt-fw, 900);
    font-style:       var(--bkvg-stt-fst, normal);
    line-height:      var(--bkvg-stt-lhd, 1.2);
    letter-spacing:   var(--bkvg-stt-lsd, normal);
    word-spacing:     var(--bkvg-stt-wsd, normal);
    text-transform:   var(--bkvg-stt-tt, none);
    text-decoration:  var(--bkvg-stt-td, none);
    color: var(--bkbg-vg-title-color, #111827);
    margin: 0 0 10px;
}
/* Rule 7: heading specificity */
.bkbg-vg-wrapper h2.bkbg-vg-section-title {
    font-family:      var(--bkvg-stt-ff, inherit);
    font-size:        var(--bkvg-stt-fsd, 32px);
    font-weight:      var(--bkvg-stt-fw, 900);
    font-style:       var(--bkvg-stt-fst, normal);
    line-height:      var(--bkvg-stt-lhd, 1.2);
    letter-spacing:   var(--bkvg-stt-lsd, normal);
    word-spacing:     var(--bkvg-stt-wsd, normal);
    text-transform:   var(--bkvg-stt-tt, none);
    text-decoration:  var(--bkvg-stt-td, none);
    color: var(--bkbg-vg-title-color, #111827);
    margin: 0 0 10px;
}
.bkbg-vg-section-sub {
    font-size: 16px;
    color: var(--bkbg-vg-desc-color, #6b7280);
    margin: 0;
    line-height: 1.6;
}

/* Filter bar */
.bkbg-vg-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}
.bkbg-vg-filter-btn {
    padding: 7px 18px;
    border-radius: 99px;
    border: none;
    background: var(--bkbg-vg-filter-bg, #f3f4f6);
    color: var(--bkbg-vg-filter-c, #374151);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s, color 0.15s;
}
.bkbg-vg-filter-btn:hover,
.bkbg-vg-filter-btn.is-active {
    background: var(--bkbg-vg-filter-active-bg, #6c3fb5);
    color: var(--bkbg-vg-filter-active-c, #fff);
}

/* Grid */
.bkbg-vg-grid {
    display: grid;
    grid-template-columns: repeat(var(--bkbg-vg-cols, 3), 1fr);
}
.bkbg-vg-card {
    background: var(--bkbg-vg-card-bg, #fff);
    border: 1px solid var(--bkbg-vg-card-border, #e5e7eb);
    border-radius: var(--bkbg-vg-card-r, 14px);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}
.bkbg-vg-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.10);
}
.bkbg-vg-card.is-hidden {
    display: none;
}

/* Thumbnail */
.bkbg-vg-thumb-wrap {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: var(--bkbg-vg-thumb-r, 10px) var(--bkbg-vg-thumb-r, 10px) 0 0;
    background: #111;
}
.bkbg-vg-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s;
}
.bkbg-vg-card:hover .bkbg-vg-thumb {
    transform: scale(1.04);
}
.bkbg-vg-thumb-placeholder {
    width: 100%;
    height: 100%;
    background: #374151;
}

/* Play button */
.bkbg-vg-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: var(--bkbg-vg-play-size, 56px);
    height: var(--bkbg-vg-play-size, 56px);
    border-radius: 50%;
    background: var(--bkbg-vg-play-btn-bg, #fff);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0,0,0,0.30);
    transition: transform 0.2s, opacity 0.2s;
}
.bkbg-vg-card:hover .bkbg-vg-play-btn {
    transform: translate(-50%, -50%) scale(1.12);
}
.bkbg-vg-play-icon {
    color: var(--bkbg-vg-play-btn-color, #6c3fb5);
    font-size: calc(var(--bkbg-vg-play-size, 56px) * 0.4);
    margin-left: 3px;
    line-height: 1;
}

/* Overlay badges */
.bkbg-vg-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: var(--bkbg-vg-dur-bg, rgba(0,0,0,0.65));
    color: var(--bkbg-vg-dur-color, #fff);
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 5px;
    pointer-events: none;
}
.bkbg-vg-cat-pill {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--bkbg-vg-accent, #6c3fb5);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 99px;
    pointer-events: none;
}

/* Card body */
.bkbg-vg-card-body {
    padding: 12px 14px;
}
.bkbg-vg-card-title {
    margin: 0 0 4px;
    font-family:      var(--bkvg-ct-ff, inherit);
    font-size:        var(--bkvg-ct-fsd, 16px);
    font-weight:      var(--bkvg-ct-fw, 700);
    font-style:       var(--bkvg-ct-fst, normal);
    line-height:      var(--bkvg-ct-lhd, 1.4);
    letter-spacing:   var(--bkvg-ct-lsd, normal);
    word-spacing:     var(--bkvg-ct-wsd, normal);
    text-transform:   var(--bkvg-ct-tt, none);
    text-decoration:  var(--bkvg-ct-td, none);
    color: var(--bkbg-vg-card-title-c, #111827);
}
.bkbg-vg-desc {
    margin: 0;
    font-family:      var(--bkvg-ds-ff, inherit);
    font-size:        var(--bkvg-ds-fsd, 14px);
    font-weight:      var(--bkvg-ds-fw, 400);
    font-style:       var(--bkvg-ds-fst, normal);
    line-height:      var(--bkvg-ds-lhd, 1.5);
    letter-spacing:   var(--bkvg-ds-lsd, normal);
    word-spacing:     var(--bkvg-ds-wsd, normal);
    text-transform:   var(--bkvg-ds-tt, none);
    text-decoration:  var(--bkvg-ds-td, none);
    color: var(--bkbg-vg-desc-color, #6b7280);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Lightbox modal */
.bkbg-vg-modal {
    position: fixed;
    inset: 0;
    z-index: 99999;
}
.bkbg-vg-modal[hidden] {
    display: none;
}
.bkbg-vg-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.85);
    backdrop-filter: blur(4px);
}
.bkbg-vg-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(90vw, 960px);
    box-sizing: border-box;
}
.bkbg-vg-modal-close {
    position: absolute;
    top: -44px;
    right: 0;
    border: none;
    background: rgba(255,255,255,0.15);
    color: #fff;
    font-size: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}
.bkbg-vg-modal-close:hover {
    background: rgba(255,255,255,0.3);
}
.bkbg-vg-modal-iframe-wrap {
    aspect-ratio: 16/9;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
}
.bkbg-vg-modal-iframe-wrap iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* Responsive typography */
@media (max-width: 1024px) {
    .bkbg-vg-wrapper .bkbg-vg-section-title { font-size: var(--bkvg-stt-fst1, var(--bkvg-stt-fsd, 32px)); line-height: var(--bkvg-stt-lht, var(--bkvg-stt-lhd, 1.2)); letter-spacing: var(--bkvg-stt-lst, var(--bkvg-stt-lsd, normal)); word-spacing: var(--bkvg-stt-wst, var(--bkvg-stt-wsd, normal)); }
    .bkbg-vg-card-title { font-size: var(--bkvg-ct-fst1, var(--bkvg-ct-fsd, 16px)); line-height: var(--bkvg-ct-lht, var(--bkvg-ct-lhd, 1.4)); letter-spacing: var(--bkvg-ct-lst, var(--bkvg-ct-lsd, normal)); word-spacing: var(--bkvg-ct-wst, var(--bkvg-ct-wsd, normal)); }
    .bkbg-vg-desc { font-size: var(--bkvg-ds-fst1, var(--bkvg-ds-fsd, 14px)); line-height: var(--bkvg-ds-lht, var(--bkvg-ds-lhd, 1.5)); letter-spacing: var(--bkvg-ds-lst, var(--bkvg-ds-lsd, normal)); word-spacing: var(--bkvg-ds-wst, var(--bkvg-ds-wsd, normal)); }
}
@media (max-width: 767px) {
    .bkbg-vg-wrapper .bkbg-vg-section-title { font-size: var(--bkvg-stt-fsm, var(--bkvg-stt-fst1, var(--bkvg-stt-fsd, 32px))); line-height: var(--bkvg-stt-lhm, var(--bkvg-stt-lht, var(--bkvg-stt-lhd, 1.2))); letter-spacing: var(--bkvg-stt-lsm, var(--bkvg-stt-lst, var(--bkvg-stt-lsd, normal))); word-spacing: var(--bkvg-stt-wsm, var(--bkvg-stt-wst, var(--bkvg-stt-wsd, normal))); }
    .bkbg-vg-card-title { font-size: var(--bkvg-ct-fsm, var(--bkvg-ct-fst1, var(--bkvg-ct-fsd, 16px))); line-height: var(--bkvg-ct-lhm, var(--bkvg-ct-lht, var(--bkvg-ct-lhd, 1.4))); letter-spacing: var(--bkvg-ct-lsm, var(--bkvg-ct-lst, var(--bkvg-ct-lsd, normal))); word-spacing: var(--bkvg-ct-wsm, var(--bkvg-ct-wst, var(--bkvg-ct-wsd, normal))); }
    .bkbg-vg-desc { font-size: var(--bkvg-ds-fsm, var(--bkvg-ds-fst1, var(--bkvg-ds-fsd, 14px))); line-height: var(--bkvg-ds-lhm, var(--bkvg-ds-lht, var(--bkvg-ds-lhd, 1.5))); letter-spacing: var(--bkvg-ds-lsm, var(--bkvg-ds-lst, var(--bkvg-ds-lsd, normal))); word-spacing: var(--bkvg-ds-wsm, var(--bkvg-ds-wst, var(--bkvg-ds-wsd, normal))); }
}

/* Responsive layout */
@media (max-width: 900px) {
    .bkbg-vg-grid {
        grid-template-columns: repeat(min(var(--bkbg-vg-cols, 3), 2), 1fr);
    }
}
@media (max-width: 600px) {
    .bkbg-vg-grid {
        grid-template-columns: 1fr;
    }
}