/* Shared AcidWiki quality-of-life improvements. */
body { isolation: isolate; }

#home-bg-canvas {
    position: fixed;
    inset: 0;
    z-index: -1;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    visibility: hidden;
    opacity: 0;
    background: #0f172a;
    transition: opacity 300ms ease, visibility 300ms ease;
}

.nav-list { overflow: visible; }
.nav-list.expanded { max-height: none !important; overflow: visible !important; }
.nav-list.collapsed { max-height: 0 !important; overflow: hidden !important; }

.section-header {
    padding-top: 4px !important;
    padding-bottom: 4px !important;
    text-align: left !important;
}

.section-header > span {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 12.5px !important;
    font-weight: 600;
    line-height: 1.35 !important;
    letter-spacing: 0.005em !important;
    text-align: left !important;
    text-transform: none !important;
    overflow-wrap: anywhere;
}

.section-header > span > svg,
.section-header > .section-arrow {
    width: 0.75rem !important;
    height: 0.75rem !important;
    min-width: 0.75rem !important;
    min-height: 0.75rem !important;
    flex: 0 0 0.75rem !important;
}

.nav-list .nav-list,
.nav-group .nav-list {
    margin-left: 9px;
    padding-left: 9px;
    border-left: 1px solid var(--border-color, rgba(255, 255, 255, 0.09));
}

.nav-link {
    font-size: 12.5px !important;
    line-height: 1.35 !important;
    padding-top: 3px !important;
    padding-bottom: 3px !important;
}

.kb-bottom-bar-cell { pointer-events: none !important; }
.kb-bottom-bar-cell > * { pointer-events: auto; }

#wiki-meta {
    position: sticky;
    top: 5.25rem;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-height: 2.5rem;
    padding: 0 0.25rem 0.75rem;
    margin-bottom: 0.5rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted, #6b7280);
}

#wiki-meta > span { display: block !important; }
#theme-toggle-desktop { display: none !important; }

#sidebar-theme-btn {
    position: relative;
    z-index: 90;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    margin-left: auto;
}

#sidebar-footer-line {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
}

aside .sticky:has(#toc-container) {
    top: 8.25rem !important;
    max-height: calc(100vh - 10rem);
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 2px;
    scrollbar-width: none;
}

aside .sticky:has(#toc-container)::-webkit-scrollbar { display: none; }
#toc-container { max-height: none; }
#mobile-toc-sidebar { overflow-y: auto !important; }
#mobile-toc-list { padding-bottom: 2.5rem; }

.math-block { margin: 1.1rem 0; overflow-x: auto; }

.markdown-body pre.mermaid {
    display: flex !important;
    justify-content: center;
    width: 100%;
    margin: 1.25rem auto !important;
    padding: 0.5rem 0 !important;
    overflow-x: auto;
    text-align: center;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
}

.markdown-body pre.mermaid svg {
    display: block;
    width: auto !important;
    max-width: 100%;
    height: auto;
    margin-inline: auto;
}

@media (min-width: 1280px) {
    #scroll-container > div {
        max-width: none !important;
        padding-left: 2.75rem !important;
        padding-right: 1.75rem !important;
        gap: 2.75rem !important;
    }

    #scroll-container > div > .content-transition-area { max-width: 74rem; }
    #scroll-container > div > aside { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
    #home-bg-canvas { transition: none; }
}