/* ==========================================================================
   Marcturus · Housekeeping — Catalogue module
   ---------------------------------------------------------------------------
   Page/offer/furni management UI. Built entirely on the housekeeping design
   tokens (--accent, --hk-*) so it inherits both the dark (crimson) and light
   (blue) themes automatically. Scoped under `.page-hk` like the rest.
   ========================================================================== */

/* Toolbar + search ---------------------------------------------------------- */
.page-hk .cat-toolbar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.1rem;
    flex-wrap: wrap;
}

.page-hk .cat-search {
    position: relative;
    flex: 1;
    min-width: 240px;
    display: flex;
    align-items: center;
}
.page-hk .cat-search > i {
    position: absolute;
    left: 0.85rem;
    color: var(--hk-text-dim);
    font-size: 0.85rem;
    pointer-events: none;
}
.page-hk .cat-search .form-input {
    width: 100%;
    padding-left: 2.3rem;
}

/* Breadcrumb ---------------------------------------------------------------- */
.page-hk .cat-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.1rem;
    font-size: 0.85rem;
    color: var(--hk-text-muted);
}
.page-hk .cat-breadcrumb a {
    color: var(--hk-text-soft);
    text-decoration: none;
    padding: 0.2rem 0.5rem;
    border-radius: 7px;
    transition: background 140ms, color 140ms;
}
.page-hk .cat-breadcrumb a:hover { background: var(--hk-soft-fill); color: var(--accent-link); }
.page-hk .cat-breadcrumb .sep { color: var(--hk-text-dim); }
.page-hk .cat-breadcrumb .current {
    color: var(--hk-text);
    font-weight: 600;
    padding: 0.2rem 0.5rem;
}

/* Page node grid ------------------------------------------------------------ */
.page-hk .cat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 0.85rem;
}

.page-hk .cat-node {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem;
    border: 1px solid var(--hk-line);
    border-radius: var(--hk-radius);
    background: var(--hk-card);
    box-shadow: var(--hk-shadow-sm);
    transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}
.page-hk .cat-node:hover {
    border-color: var(--hk-line-accent);
    background: var(--hk-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--hk-shadow-md);
}
.page-hk .cat-node.is-disabled { opacity: 0.62; }

.page-hk .cat-node__icon { flex-shrink: 0; text-decoration: none; }

.page-hk .cat-node__body { flex: 1; min-width: 0; }

.page-hk .cat-node__title {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}
.page-hk .cat-node__title a {
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--hk-text);
    text-decoration: none;
    letter-spacing: -0.01em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.page-hk .cat-node__title a:hover { color: var(--accent-link); }
.page-hk .cat-node__id {
    font-family: var(--hk-mono);
    font-size: 0.7rem;
    color: var(--hk-text-dim);
    flex-shrink: 0;
}

.page-hk .cat-node__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
}
.page-hk .cat-node__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 0.5rem;
    font-size: 0.76rem;
    color: var(--hk-text-muted);
}
.page-hk .cat-node__meta i { color: var(--accent); opacity: 0.8; margin-right: 0.25rem; }

.page-hk .cat-node__actions {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex-shrink: 0;
}

/* Icon tile ----------------------------------------------------------------- */
.page-hk .cat-iconbox {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 13px;
    background: var(--accent-grad);
    color: var(--on-accent);
    font-size: 1.15rem;
    box-shadow: var(--hk-shadow-accent), inset 0 -2px 0 rgba(0,0,0,0.22), inset 0 1px 0 rgba(255,255,255,0.18);
}
.page-hk .cat-iconbox--sm { width: 36px; height: 36px; border-radius: 10px; font-size: 0.9rem; }
.page-hk .cat-iconbox--lg { width: 64px; height: 64px; border-radius: 16px; font-size: 1.5rem; }

/* Page-icon variant: neutral tile showing the real catalogue PNG (icon_<id>.png).
   The folder glyph is hidden while the image is the primary art, and only revealed
   (via .is-fallback, set by the <img> onerror) when the PNG is missing. */
.page-hk .cat-iconbox--page {
    background: var(--hk-soft-fill);
    border: 1px solid var(--hk-line);
    color: var(--accent);
    box-shadow: none;
}
.page-hk .cat-iconbox--page > i { display: none; }
.page-hk .cat-iconbox--page.is-fallback > i { display: block; }
.page-hk .cat-iconbox__img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
    padding: 12%;
    box-sizing: border-box;
}
.page-hk .cat-iconbox__id {
    position: absolute;
    bottom: -6px;
    right: -6px;
    background: var(--hk-card-solid);
    color: var(--hk-text-muted);
    border: 1px solid var(--hk-line-strong);
    border-radius: 999px;
    font-size: 0.58rem;
    font-family: var(--hk-mono);
    padding: 0.05rem 0.35rem;
    line-height: 1.4;
}

/* Layout badge -------------------------------------------------------------- */
.page-hk .layout-badge {
    display: inline-flex;
    align-items: center;
    font-family: var(--hk-mono);
    font-size: 0.66rem;
    font-weight: 600;
    color: var(--accent-link);
    background: var(--accent-softer);
    border: 1px solid var(--accent-line);
    border-radius: 6px;
    padding: 0.14rem 0.42rem;
    letter-spacing: -0.01em;
}

/* Furni cell (tables) ------------------------------------------------------- */
.page-hk .cat-furni-cell { display: flex; align-items: center; gap: 0.6rem; }
.page-hk .cat-furni-cell strong { color: var(--hk-text); font-weight: 600; }
.page-hk .cat-furni-cell__id {
    font-family: var(--hk-mono);
    font-size: 0.7rem;
    color: var(--hk-text-dim);
    margin-top: 1px;
}

/* Price pills --------------------------------------------------------------- */
.page-hk .price-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-weight: 700;
    font-size: 0.74rem;
    font-variant-numeric: tabular-nums;
    padding: 0.18rem 0.5rem;
    border-radius: 999px;
    border: 1px solid var(--hk-line);
    white-space: nowrap;
}
.page-hk .price-pill i { font-size: 0.85em; }
.page-hk .price-pill--credits { background: rgba(245,200,66,0.12); color: #e0a800; border-color: rgba(245,200,66,0.30); }
.page-hk .price-pill--points  { background: var(--accent-soft); color: var(--accent-link); border-color: var(--accent-line); }
.page-hk .price-pill--diamond { background: rgba(56,189,248,0.12); color: #38bdf8; border-color: rgba(56,189,248,0.30); }
.page-hk .price-pill--free    { background: var(--hk-soft-fill); color: var(--hk-text-muted); }
:root[data-hk-theme="light"] .page-hk .price-pill--credits { color: #b7791f; }
:root[data-hk-theme="light"] .page-hk .price-pill--diamond { color: #0284c7; }

/* Form layout helpers ------------------------------------------------------- */
.page-hk .form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.9rem;
    margin-bottom: 1rem;
}
.page-hk .form-row .form-group { margin-bottom: 0; }

/* Toggle flag chips --------------------------------------------------------- */
.page-hk .flag-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.4rem 0 1rem;
}
.page-hk .flag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--hk-line-strong);
    border-radius: 9px;
    background: var(--hk-input-bg);
    color: var(--hk-text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    transition: border-color 150ms, background 150ms, color 150ms;
}
.page-hk .flag span { display: inline-flex; align-items: center; gap: 0.4rem; }
.page-hk .flag span i { opacity: 0.75; }
.page-hk .flag input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--accent);
    cursor: pointer;
}
.page-hk .flag:hover { border-color: var(--hk-line-accent); }
.page-hk .flag.is-on {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--hk-text);
}
.page-hk .flag.is-on span i { opacity: 1; color: var(--accent); }
:root[data-hk-theme="dark"] .page-hk .flag.is-on span i { color: var(--accent-bright); }

/* Advanced disclosure ------------------------------------------------------- */
.page-hk .cat-advanced {
    border: 1px solid var(--hk-line);
    border-radius: var(--hk-radius-sm);
    background: var(--hk-soft-fill);
    margin-top: 0.5rem;
    overflow: hidden;
}
.page-hk .cat-advanced > summary {
    cursor: pointer;
    padding: 0.7rem 0.9rem;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--hk-text-soft);
    letter-spacing: 0.02em;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.page-hk .cat-advanced > summary::-webkit-details-marker { display: none; }
.page-hk .cat-advanced > summary i { color: var(--accent); }
.page-hk .cat-advanced[open] > summary { border-bottom: 1px solid var(--hk-line); }
.page-hk .cat-advanced > :not(summary) { margin-left: 0.9rem; margin-right: 0.9rem; }
.page-hk .cat-advanced > .form-row:first-of-type,
.page-hk .cat-advanced > .form-group:first-of-type { margin-top: 0.9rem; }
.page-hk .cat-advanced > :last-child { margin-bottom: 0.9rem; }

/* Furni picker (inline row) ------------------------------------------------- */
.page-hk .cat-pick { display: flex; gap: 0.5rem; align-items: stretch; }
.page-hk .cat-pick .form-input { flex: 1; }

/* Preview panel ------------------------------------------------------------- */
.page-hk .cat-preview {
    position: sticky;
    top: 6rem;
    border: 1px solid var(--hk-line);
    border-radius: var(--hk-radius);
    background: var(--hk-card);
    box-shadow: var(--hk-shadow-sm);
    padding: 1.1rem;
}
.page-hk .cat-preview__node {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--hk-line);
}
.page-hk .cat-preview__title {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--hk-text);
    margin-bottom: 0.4rem;
    letter-spacing: -0.01em;
}
.page-hk .cat-preview__meta { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; margin: 0; }
.page-hk .cat-preview__meta > div { display: flex; flex-direction: column; gap: 0.1rem; }
.page-hk .cat-preview__meta dt {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 700;
    color: var(--hk-text-dim);
}
.page-hk .cat-preview__meta dd {
    margin: 0;
    font-weight: 600;
    color: var(--hk-text);
    font-variant-numeric: tabular-nums;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.page-hk .cat-badge-preview {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--hk-line);
}
.page-hk .cat-badge-preview img { width: 40px; height: 40px; object-fit: contain; image-rendering: pixelated; }

/* Badge image — list cell + editor inline preview */
.page-hk .cat-badge-cell { display: inline-flex; align-items: center; gap: 0.5rem; }
.page-hk .cat-badge-cell img { width: 26px; height: 26px; object-fit: contain; image-rendering: pixelated; flex-shrink: 0; }
.page-hk .cat-badge-inline { display: flex; align-items: center; gap: 0.6rem; margin-top: 0.5rem; }
.page-hk .cat-badge-inline img { width: 32px; height: 32px; object-fit: contain; image-rendering: pixelated; flex-shrink: 0; }
.page-hk .cat-badge-inline code { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Furni type tags ----------------------------------------------------------- */
.page-hk .furni-type {
    display: inline-flex;
    align-items: center;
    font-size: 0.66rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.16rem 0.45rem;
    border-radius: 6px;
    border: 1px solid var(--hk-line);
    background: var(--hk-soft-fill);
    color: var(--hk-text-soft);
}
.page-hk .furni-type--s { background: rgba(96,165,250,0.13); color: #60a5fa; border-color: rgba(96,165,250,0.30); }
.page-hk .furni-type--i { background: rgba(167,139,250,0.13); color: #a78bfa; border-color: rgba(167,139,250,0.30); }
.page-hk .furni-type--e { background: rgba(244,114,182,0.13); color: #f472b6; border-color: rgba(244,114,182,0.30); }
.page-hk .furni-type--b { background: rgba(251,191,36,0.13); color: #d99e1e; border-color: rgba(251,191,36,0.30); }
.page-hk .furni-type--r { background: rgba(45,212,191,0.13); color: #2dd4bf; border-color: rgba(45,212,191,0.30); }
:root[data-hk-theme="light"] .page-hk .furni-type--s { color: #2563eb; }
:root[data-hk-theme="light"] .page-hk .furni-type--i { color: #7c3aed; }
:root[data-hk-theme="light"] .page-hk .furni-type--e { color: #db2777; }
:root[data-hk-theme="light"] .page-hk .furni-type--b { color: #b7791f; }
:root[data-hk-theme="light"] .page-hk .furni-type--r { color: #0d9488; }

/* Rarity stars -------------------------------------------------------------- */
.page-hk .rarity {
    display: inline-flex;
    gap: 1px;
    color: #f5c842;
    font-size: 0.72rem;
    letter-spacing: 1px;
}
.page-hk .rarity--3, .page-hk .rarity--4 { color: #f59e0b; filter: drop-shadow(0 0 4px rgba(245,158,11,0.4)); }

/* Flag dots (table behavior column) ----------------------------------------- */
.page-hk .flag-dots { display: inline-flex; gap: 0.3rem; flex-wrap: wrap; }
.page-hk .flag-dot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 6px;
    background: var(--accent-soft);
    color: var(--accent-link);
    border: 1px solid var(--accent-line);
    font-size: 0.62rem;
}

/* Pager --------------------------------------------------------------------- */
.page-hk .pager {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--hk-line);
}
.page-hk .pager__info {
    font-size: 0.82rem;
    color: var(--hk-text-muted);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}
.page-hk .btn.is-disabled { opacity: 0.4; pointer-events: none; }

/* Wide modal (furni picker) ------------------------------------------------- */
.page-hk .modal--wide { max-width: 640px; }
.page-hk .cat-picklist {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    max-height: 50vh;
    overflow-y: auto;
}
.page-hk .cat-pickrow {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    text-align: left;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--hk-line);
    border-radius: 10px;
    background: var(--hk-soft-fill);
    color: var(--hk-text);
    cursor: pointer;
    transition: border-color 140ms, background 140ms, transform 100ms;
}
.page-hk .cat-pickrow:hover { border-color: var(--hk-line-accent); background: var(--hk-card-hover); }
.page-hk .cat-pickrow:active { transform: scale(0.99); }
.page-hk .cat-pickrow__body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.page-hk .cat-pickrow__body strong { font-size: 0.88rem; font-weight: 600; }
.page-hk .cat-pickrow__body span {
    font-size: 0.72rem;
    color: var(--hk-text-muted);
    font-family: var(--hk-mono);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* View toggle (grid / tree) ------------------------------------------------- */
.page-hk .cat-viewtoggle {
    display: inline-flex;
    border: 1px solid var(--hk-line-strong);
    border-radius: 9px;
    overflow: hidden;
    flex-shrink: 0;
}
.page-hk .cat-viewtoggle button {
    appearance: none;
    border: 0;
    background: var(--hk-input-bg);
    color: var(--hk-text-muted);
    padding: 0.45rem 0.8rem;
    font: 600 0.78rem/1 "Inter", sans-serif;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: background 140ms, color 140ms;
}
.page-hk .cat-viewtoggle button + button { border-left: 1px solid var(--hk-line-strong); }
.page-hk .cat-viewtoggle button:hover:not(.is-active) { background: var(--hk-soft-fill-2); color: var(--hk-text-soft); }
.page-hk .cat-viewtoggle button.is-active { background: var(--accent-soft); color: var(--hk-text); }
.page-hk .cat-viewtoggle button.is-active i { color: var(--accent); }

/* Recursive tree view ------------------------------------------------------- */
.page-hk .cat-tree { display: flex; flex-direction: column; gap: 1px; }

.page-hk .cat-tree__row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem;
    padding-left: calc(0.5rem + var(--depth, 0) * 1.45rem);
    border-radius: 9px;
    transition: background 140ms ease;
}
.page-hk .cat-tree__row:hover { background: var(--hk-row-hover); }
.page-hk .cat-tree__row.is-disabled { opacity: 0.6; }

.page-hk .cat-tree__toggle {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    background: transparent;
    color: var(--hk-text-muted);
    border-radius: 7px;
    cursor: pointer;
    font-size: 0.72rem;
    transition: background 140ms, color 140ms, border-color 140ms;
}
.page-hk .cat-tree__toggle:hover:not(.is-leaf) {
    background: var(--accent-soft);
    color: var(--accent-link);
    border-color: var(--accent-line);
}
.page-hk .cat-tree__toggle.is-leaf { visibility: hidden; }

.page-hk .cat-tree__body {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.page-hk .cat-tree__title {
    font-weight: 600;
    color: var(--hk-text);
    text-decoration: none;
    letter-spacing: -0.01em;
    background: none;
    border: 0;
    padding: 0;
    margin: 0;
    font-family: inherit;
    font-size: inherit;
    text-align: left;
    cursor: pointer;
}
.page-hk .cat-tree__title:hover { color: var(--accent-link); }

.page-hk .cat-tree__meta {
    display: flex;
    gap: 0.85rem;
    flex-shrink: 0;
    font-size: 0.74rem;
    color: var(--hk-text-muted);
    font-variant-numeric: tabular-nums;
}
.page-hk .cat-tree__meta i { color: var(--accent); opacity: 0.8; margin-right: 0.2rem; }

.page-hk .cat-tree__actions { display: flex; gap: 0.3rem; flex-shrink: 0; }

.page-hk .cat-tree__empty {
    padding: 0.45rem 0.5rem;
    padding-left: calc(0.5rem + var(--depth, 0) * 1.45rem + 30px);
    color: var(--hk-text-dim);
    font-size: 0.8rem;
    font-style: italic;
}
.page-hk .cat-tree__empty i { margin-right: 0.35rem; opacity: 0.7; }

.page-hk .cat-tree__row.is-selected {
    background: var(--accent-soft);
    box-shadow: inset 2px 0 0 var(--accent);
}

/* Master-detail split: tree (left) + item panel (right) --------------------- */
.page-hk .cat-split {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 1.1rem;
    align-items: start;
}

.page-hk .cat-itempanel {
    border: 1px solid var(--hk-line);
    border-radius: var(--hk-radius);
    background: var(--hk-card);
    overflow: hidden;
}
.page-hk .cat-itempanel__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--hk-line);
}
.page-hk .cat-itempanel__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 700;
    color: var(--hk-text-dim);
}
.page-hk .cat-itempanel__eyebrow i { color: var(--accent); }
.page-hk .cat-itempanel__head h4 {
    margin: 0.25rem 0 0;
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--hk-text);
    letter-spacing: -0.01em;
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
}
.page-hk .cat-itempanel__empty {
    padding: 2.2rem 1rem;
    text-align: center;
    color: var(--hk-text-muted);
}
.page-hk .cat-itempanel__empty > i {
    font-size: 1.6rem;
    opacity: 0.5;
    display: block;
    margin-bottom: 0.6rem;
    color: var(--hk-text-dim);
}
.page-hk .cat-itempanel__empty p { margin: 0; font-size: 0.85rem; }

.page-hk .cat-itemlist {
    display: flex;
    flex-direction: column;
    max-height: 62vh;
    overflow-y: auto;
}
.page-hk .cat-itemrow {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid var(--hk-line);
    text-decoration: none;
    color: var(--hk-text);
    transition: background 140ms ease;
}
.page-hk .cat-itemrow:hover { background: var(--hk-row-hover); }
.page-hk .cat-itemrow:last-child { border-bottom: 0; }
.page-hk .cat-itemrow__body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.page-hk .cat-itemrow__body strong {
    font-size: 0.85rem;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.page-hk .cat-itemrow__sub {
    font-size: 0.71rem;
    color: var(--hk-text-muted);
    font-family: var(--hk-mono);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.page-hk .cat-itemrow__badge { width: 24px; height: 24px; object-fit: contain; image-rendering: pixelated; flex-shrink: 0; }
.page-hk .cat-itemrow__price { flex-shrink: 0; display: inline-flex; gap: 0.3rem; }
.page-hk .cat-itempanel__all { margin: 0.7rem; }

/* Mobile -------------------------------------------------------------------- */
@media (max-width: 640px) {
    .page-hk .cat-grid { grid-template-columns: 1fr; }
    .page-hk .cat-node { flex-wrap: wrap; }
    .page-hk .cat-node__actions { flex-direction: row; width: 100%; }
    .page-hk .cat-node__actions .btn { flex: 1; }
    .page-hk .cat-tree__meta { display: none; }
    .page-hk .cat-tree__row { padding-left: calc(0.25rem + var(--depth, 0) * 1rem); }
    .page-hk .cat-split { grid-template-columns: 1fr; }
}