/* All rules are scoped to this block. The content itself remains ordinary HTML. */
.wp-block-border-glow-card {
    --bgc-background: #120f17;
    --bgc-background-image: none;
    --bgc-background-size: cover;
    --bgc-radius: 28px;
    --bgc-glow-radius: 40px;
    --bgc-intensity: 1;
    --bgc-spread: 90deg;
    --bgc-glow-color: 40 80% 80%;
    --bgc-color-1: #a78bfa;
    --bgc-color-2: #38bdf8;
    --bgc-color-3: #f472b6;
    --bgc-active: 0;
    --bgc-angle: 0deg;
    --bgc-cone: conic-gradient(
        from calc(var(--bgc-angle) - var(--bgc-spread) / 2),
        transparent 0deg,
        #000 calc(var(--bgc-spread) * 0.35),
        #000 calc(var(--bgc-spread) * 0.65),
        transparent var(--bgc-spread),
        transparent 360deg
    );
    position: relative;
    isolation: isolate;
    box-sizing: border-box;
    min-width: 0;
    overflow: visible;
    border: 1px solid rgb(255 255 255 / 0.13);
    border-radius: var(--bgc-radius);
    background-color: var(--bgc-background);
    background-image: var(--bgc-background-image);
    background-size: var(--bgc-background-size);
    background-position: center;
    background-repeat: no-repeat;
}

/* Native padding, margin, min-height and typography apply to the outer block. */
.wp-block-border-glow-card > .bgc-content {
    position: relative;
    z-index: 1;
    min-width: 0;
    display: flow-root;
    border-radius: inherit;
}
.wp-block-border-glow-card > .bgc-content > :first-child {
    margin-block-start: 0;
}
.wp-block-border-glow-card > .bgc-content > :last-child {
    margin-block-end: 0;
}

/* A static outline is the fallback when CSS masks or JavaScript are unavailable. */
.wp-block-border-glow-card::before,
.wp-block-border-glow-card > .bgc-halo {
    display: none;
    pointer-events: none;
}

@supports ((mask-composite: intersect) or (-webkit-mask-composite: source-in)) {
    /* A three-colour spatial mesh, revealed only within the directional cone. */
    .wp-block-border-glow-card::before {
        content: "";
        display: block;
        position: absolute;
        z-index: 2;
        inset: -1px;
        box-sizing: border-box;
        padding: 2px;
        border-radius: inherit;
        background:
            radial-gradient(ellipse at 5% 5%, var(--bgc-color-1) 0%, transparent 62%),
            radial-gradient(ellipse at 95% 20%, var(--bgc-color-2) 0%, transparent 62%),
            radial-gradient(ellipse at 50% 100%, var(--bgc-color-3) 0%, transparent 72%),
            linear-gradient(120deg, var(--bgc-color-1), var(--bgc-color-2), var(--bgc-color-3));
        -webkit-mask: var(--bgc-cone), linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
        mask: var(--bgc-cone), linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
        -webkit-mask-composite: source-in, xor;
        mask-composite: intersect, exclude;
        opacity: calc(var(--bgc-active) * var(--bgc-intensity));
        transition: opacity 160ms ease-out;
    }

    /* Only decoration is layout-contained: content and fixed descendants are not. */
    .wp-block-border-glow-card > .bgc-halo {
        display: block;
        position: absolute;
        z-index: 0;
        inset: -1px;
        contain: layout;
        margin: 0;
        border-radius: inherit;
        opacity: calc(var(--bgc-active) * var(--bgc-intensity) * 0.55);
        transition: opacity 160ms ease-out;
    }
    /* The expanded mask has ordinary bounds, avoiding no-clip mask repaint bugs. */
    .wp-block-border-glow-card > .bgc-halo > .bgc-halo-mask {
        position: absolute;
        inset: calc(-1 * var(--bgc-glow-radius));
        border-radius: calc(var(--bgc-radius) + var(--bgc-glow-radius));
        overflow: hidden;
        -webkit-mask-image: var(--bgc-cone);
        mask-image: var(--bgc-cone);
    }
    .wp-block-border-glow-card > .bgc-halo > .bgc-halo-mask::before {
        content: "";
        position: absolute;
        inset: var(--bgc-glow-radius);
        border-radius: var(--bgc-radius);
        box-shadow:
            0 0 calc(var(--bgc-glow-radius) * 0.15) hsl(var(--bgc-glow-color) / 0.95),
            0 0 calc(var(--bgc-glow-radius) * 0.45) hsl(var(--bgc-glow-color) / 0.75),
            0 0 var(--bgc-glow-radius) hsl(var(--bgc-glow-color) / 0.55);
    }
}

/* Keep native keyboard focus rings. The wrapper is not an extra tab stop. */
.wp-block-border-glow-card:focus-within {
    border-color: hsl(var(--bgc-glow-color) / 0.65);
}

/* Decoration is optional; neither motion nor hover is needed to use the card. */
@media (prefers-reduced-motion: reduce), (any-hover: none) {
    .wp-block-border-glow-card::before,
    .wp-block-border-glow-card > .bgc-halo {
        display: none;
        transition: none;
    }
}
@media (forced-colors: active) {
    .wp-block-border-glow-card {
        border-color: CanvasText;
    }
    .wp-block-border-glow-card::before,
    .wp-block-border-glow-card > .bgc-halo {
        display: none;
    }
}
@media print {
    .wp-block-border-glow-card::before,
    .wp-block-border-glow-card > .bgc-halo {
        display: none;
    }
}