/* === IMAGE BLOCK === */
.wp-block-image.is-style-atr-filter-grayscale { filter: grayscale(100%); }
.wp-block-image.is-style-atr-filter-sepia { filter: sepia(100%); }
.wp-block-image.is-style-atr-filter-blur { filter: blur(3px); }
.wp-block-image.is-style-atr-filter-brightness { filter: brightness(1.3); }
.wp-block-image.is-style-atr-filter-darken { filter: brightness(0.7); }
.wp-block-image.is-style-atr-filter-contrast { filter: contrast(1.5); }
.wp-block-image.is-style-atr-filter-saturate { filter: saturate(2); }
.wp-block-image.is-style-atr-filter-desaturate { filter: saturate(0.3); }
.wp-block-image.is-style-atr-filter-invert { filter: invert(100%); }
.wp-block-image.is-style-atr-filter-hue-rotate { filter: hue-rotate(90deg); }
.wp-block-image.is-style-atr-filter-opacity { filter: opacity(50%); }
.wp-block-image.is-style-atr-filter-drop-shadow { filter: drop-shadow(4px 4px 6px rgba(0,0,0,0.5)); }

/* === COVER BLOCK === */
.wp-block-cover.is-style-atr-filter-grayscale > .wp-block-cover__image-background { filter: grayscale(100%); }
.wp-block-cover.is-style-atr-filter-sepia > .wp-block-cover__image-background { filter: sepia(100%); }
.wp-block-cover.is-style-atr-filter-blur > .wp-block-cover__image-background { filter: blur(3px); }
.wp-block-cover.is-style-atr-filter-brightness > .wp-block-cover__image-background { filter: brightness(1.3); }
.wp-block-cover.is-style-atr-filter-darken > .wp-block-cover__image-background { filter: brightness(0.7); }
.wp-block-cover.is-style-atr-filter-contrast > .wp-block-cover__image-background { filter: contrast(1.5); }
.wp-block-cover.is-style-atr-filter-saturate > .wp-block-cover__image-background { filter: saturate(2); }
.wp-block-cover.is-style-atr-filter-desaturate > .wp-block-cover__image-background { filter: saturate(0.3); }
.wp-block-cover.is-style-atr-filter-invert > .wp-block-cover__image-background { filter: invert(100%); }
.wp-block-cover.is-style-atr-filter-hue-rotate > .wp-block-cover__image-background { filter: hue-rotate(90deg); }
.wp-block-cover.is-style-atr-filter-opacity > .wp-block-cover__image-background { filter: opacity(50%); }
.wp-block-cover.is-style-atr-filter-drop-shadow > .wp-block-cover__image-background { filter: drop-shadow(4px 4px 6px rgba(0,0,0,0.5)); }

/* === GROUP BLOCK (pseudo-element approach) === */
.wp-block-group[class*="is-style-atr-filter-"] {
    position: relative;
}
.wp-block-group[class*="is-style-atr-filter-"]::before {
    content: "";
    position: absolute;
    inset: 0;
    background: inherit;
    z-index: 0;
}
.wp-block-group[class*="is-style-atr-filter-"] > * {
    position: relative;
    z-index: 1;
}

.wp-block-group.is-style-atr-filter-grayscale::before { filter: grayscale(100%); }
.wp-block-group.is-style-atr-filter-sepia::before { filter: sepia(100%); }
.wp-block-group.is-style-atr-filter-blur::before { filter: blur(3px); }
.wp-block-group.is-style-atr-filter-brightness::before { filter: brightness(1.3); }
.wp-block-group.is-style-atr-filter-darken::before { filter: brightness(0.7); }
.wp-block-group.is-style-atr-filter-contrast::before { filter: contrast(1.5); }
.wp-block-group.is-style-atr-filter-saturate::before { filter: saturate(2); }
.wp-block-group.is-style-atr-filter-desaturate::before { filter: saturate(0.3); }
.wp-block-group.is-style-atr-filter-invert::before { filter: invert(100%); }
.wp-block-group.is-style-atr-filter-hue-rotate::before { filter: hue-rotate(90deg); }
.wp-block-group.is-style-atr-filter-opacity::before { filter: opacity(50%); }
.wp-block-group.is-style-atr-filter-drop-shadow::before { filter: drop-shadow(4px 4px 6px rgba(0,0,0,0.5)); }