/* One Page Navigation Block — bkbg-opn-* */

/* Root (invisible placeholder in page flow) */
.bkbg-opn-app {
    display: none;
}

/* Fixed container (built by JS) */
.bkbg-opn-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.bkbg-opn-nav.bkbg-opn-right { right: 24px; }
.bkbg-opn-nav.bkbg-opn-left  { left: 24px; }

/* Progress line track */
.bkbg-opn-track {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    background: rgba(0, 0, 0, 0.08);
    height: 100%;
    border-radius: 2px;
}

.bkbg-opn-track-fill {
    width: 100%;
    background: var(--bkbg-opn-active, #6366f1);
    border-radius: 2px;
    transition: height 0.3s ease;
    height: 0%;
}

/* ---- Dot item ---- */
.bkbg-opn-item {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 7px 0;
}

.bkbg-opn-nav.bkbg-opn-right .bkbg-opn-item { flex-direction: row-reverse; }
.bkbg-opn-nav.bkbg-opn-left  .bkbg-opn-item { flex-direction: row; }

/* ---- The dot ---- */
.bkbg-opn-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bkbg-opn-dot, #d1d5db);
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    flex-shrink: 0;
}

.bkbg-opn-item:hover .bkbg-opn-dot {
    background: var(--bkbg-opn-hover, #a5b4fc);
    transform: scale(1.2);
}

.bkbg-opn-item.bkbg-opn-active .bkbg-opn-dot {
    background: var(--bkbg-opn-active, #6366f1);
    transform: scale(1.35);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--bkbg-opn-active, #6366f1) 25%, transparent);
}

/* Diamond shape */
.bkbg-opn-diamond .bkbg-opn-dot {
    border-radius: 2px;
    transform: rotate(45deg);
}

.bkbg-opn-diamond .bkbg-opn-item.bkbg-opn-active .bkbg-opn-dot {
    transform: rotate(45deg) scale(1.35);
}

.bkbg-opn-diamond .bkbg-opn-item:hover .bkbg-opn-dot {
    transform: rotate(45deg) scale(1.2);
}

/* Square shape */
.bkbg-opn-square .bkbg-opn-dot {
    border-radius: 3px;
}

/* ---- Pulse animation on active ---- */
@keyframes bkbg-opn-pulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--bkbg-opn-active, #6366f1); }
    50%       { box-shadow: 0 0 0 6px rgba(99, 102, 241, 0); }
}

.bkbg-opn-item.bkbg-opn-active.bkbg-opn-animate .bkbg-opn-dot {
    animation: bkbg-opn-pulse 2s ease-in-out infinite;
}

/* ---- Tooltip ---- */
.bkbg-opn-tooltip {
    font-family: var(--bkbg-opn-tp-font-family, inherit);
    font-size: var(--bkbg-opn-tp-font-size-d, 12px);
    font-weight: var(--bkbg-opn-tp-font-weight, 600);
    line-height: var(--bkbg-opn-tp-line-height-d, var(--bkbg-opn-tp-line-height, 1.3));
    letter-spacing: var(--bkbg-opn-tp-letter-spacing-d, var(--bkbg-opn-tp-letter-spacing, normal));
    border-radius: 6px;
    padding: 4px 10px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translateX(0) scale(0.85);
    transition: opacity 0.2s, transform 0.2s;
}

.bkbg-opn-nav.bkbg-opn-right .bkbg-opn-tooltip { margin-right: 10px; transform-origin: right center; }
.bkbg-opn-nav.bkbg-opn-left  .bkbg-opn-tooltip { margin-left: 10px; transform-origin: left center; }

.bkbg-opn-item:hover .bkbg-opn-tooltip,
.bkbg-opn-item.bkbg-opn-active .bkbg-opn-tooltip {
    opacity: 1;
    transform: translateX(0) scale(1);
}

/* ---- Editor wrap ---- */
.bkbg-opn-editor-wrap { display: block; }

/* ---- Hide on mobile by default ---- */
@media (max-width: 480px) {
    .bkbg-opn-nav { display: none; }
}

@media (max-width: 1024px) {
    /* ---- Tooltip ---- */
.bkbg-opn-tooltip {
        font-size: var(--bkbg-opn-tp-font-size-t, var(--bkbg-opn-tp-font-size-d, 12px));
        line-height: var(--bkbg-opn-tp-line-height-t, var(--bkbg-opn-tp-line-height-d, var(--bkbg-opn-tp-line-height, 1.3)));
        letter-spacing: var(--bkbg-opn-tp-letter-spacing-t, var(--bkbg-opn-tp-letter-spacing-d, var(--bkbg-opn-tp-letter-spacing, normal)));
    }
}
@media (max-width: 767px) {
    /* ---- Tooltip ---- */
.bkbg-opn-tooltip {
        font-size: var(--bkbg-opn-tp-font-size-m, var(--bkbg-opn-tp-font-size-t, var(--bkbg-opn-tp-font-size-d, 12px)));
        line-height: var(--bkbg-opn-tp-line-height-m, var(--bkbg-opn-tp-line-height-t, var(--bkbg-opn-tp-line-height-d, var(--bkbg-opn-tp-line-height, 1.3))));
        letter-spacing: var(--bkbg-opn-tp-letter-spacing-m, var(--bkbg-opn-tp-letter-spacing-t, var(--bkbg-opn-tp-letter-spacing-d, var(--bkbg-opn-tp-letter-spacing, normal))));
    }
}