/* ══════════════════════════════════════════════════════════════════
   References manager — sidebar (title + folders) + grid + lightbox
   ══════════════════════════════════════════════════════════════════ */

body.references-page { background: linear-gradient(180deg, #f8fafc, #fff 280px); }
body.rx-lb-locked { overflow: hidden; }

.gx-top-spacer { flex: 1; }

.rx-shell {
    flex: 1;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 16px;
    padding: 16px max(18px, calc((100vw - 1400px) / 2));
    max-width: 100%;
    box-sizing: border-box;
    min-height: 0;
}

/* ─── Sidebar ─── */
.rx-sidebar {
    background: var(--gx-bg-pane, #fff);
    border: 1px solid var(--gx-border, #e2e8f0);
    border-radius: var(--gx-radius, 14px);
    padding: 16px 14px 14px;
    box-shadow: 0 1px 3px rgba(15,23,42,0.04);
    height: fit-content;
    position: sticky; top: 76px;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
}
/* Page title now lives at the top of the sidebar (was in the topbar) */
.rx-side-title {
    display: flex; align-items: center; gap: 8px;
    font: 800 16px 'Inter', sans-serif;
    color: var(--slate-900);
    padding-bottom: 12px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--slate-100);
}
.rx-side-title svg { color: var(--brand-600); flex-shrink: 0; }
.rx-side-section { margin-bottom: 18px; }
.rx-side-head-row {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 8px;
}
.rx-side-head {
    font: 800 10px 'Inter', sans-serif;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--slate-500);
}
.rx-side-add {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 9px;
    background: var(--brand-50);
    border: 1px solid var(--brand-200);
    border-radius: 99px;
    color: var(--brand-700);
    font: 700 10.5px 'Inter', sans-serif;
    cursor: pointer;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.rx-side-add:hover { background: var(--brand-100); border-color: var(--brand-300); color: var(--brand-800); }
.rx-side-add svg { flex-shrink: 0; }
.rx-folder-list {
    list-style: none; margin: 0; padding: 0;
    display: flex; flex-direction: column; gap: 2px;
}
.rx-folder {
    display: flex; align-items: center; gap: 8px;
    padding: 7px 10px;
    border-radius: 7px;
    text-decoration: none;
    color: var(--slate-700);
    font: 600 12.5px 'Inter', sans-serif;
    transition: background 0.12s, color 0.12s;
}
.rx-folder:hover { background: var(--slate-100); color: var(--slate-900); }
.rx-folder.is-active {
    background: var(--brand-50);
    color: var(--brand-700);
    font-weight: 700;
}
.rx-folder-count {
    margin-left: auto;
    font: 700 11px 'Inter', sans-serif;
    color: var(--slate-500);
    background: var(--slate-100);
    padding: 1px 8px;
    border-radius: 99px;
    min-width: 18px;
    text-align: center;
}
.rx-folder.is-active .rx-folder-count {
    background: var(--brand-100);
    color: var(--brand-700);
}
.rx-folder-edit {
    margin-left: 4px;
    background: transparent; border: none;
    color: var(--slate-400);
    font-size: 13px;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.12s;
}
.rx-folder:hover .rx-folder-edit { opacity: 1; }
.rx-folder-edit:hover { background: var(--slate-200); color: var(--slate-700); }

/* ─── Center: filter bar + grid ─── */
.rx-center {
    display: flex; flex-direction: column; gap: 14px;
    min-width: 0;
}
.rx-filterbar {
    display: flex; gap: 12px; align-items: center;
    background: var(--gx-bg-pane, #fff);
    border: 1px solid var(--gx-border, #e2e8f0);
    border-radius: var(--gx-radius, 14px);
    padding: 10px 14px;
    box-shadow: 0 1px 3px rgba(15,23,42,0.04);
    flex-wrap: wrap;
}
.rx-pills { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.rx-pill {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--slate-200);
    border-radius: 99px;
    font: 600 12px 'Inter', sans-serif;
    color: var(--slate-600);
    cursor: pointer;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
    display: inline-flex; align-items: center; gap: 5px;
}
.rx-pill:hover { background: var(--slate-100); color: var(--slate-900); }
.rx-pill span {
    font-size: 10.5px; font-weight: 800;
    background: var(--slate-100); color: var(--slate-600);
    padding: 1px 6px; border-radius: 99px;
    min-width: 14px; text-align: center;
}
.rx-pill.is-active {
    background: var(--brand-600);
    color: #fff;
    border-color: var(--brand-700);
}
.rx-pill.is-active span { background: rgba(255,255,255,0.22); color: #fff; }
.rx-search {
    flex: 0 0 220px;
    padding: 7px 12px;
    border: 1px solid var(--slate-300);
    border-radius: 8px;
    font: 500 13px 'Inter', sans-serif;
    color: var(--slate-900);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.rx-search:focus { border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }

.rx-grid {
    background: var(--gx-bg-pane, #fff);
    border: 1px solid var(--gx-border, #e2e8f0);
    border-radius: var(--gx-radius, 14px);
    padding: 14px;
    box-shadow: 0 1px 3px rgba(15,23,42,0.04);
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
    align-content: start;
    min-height: 60vh;
}
.rx-empty-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--slate-500);
    font: 500 13px 'Inter', sans-serif;
}

/* Ref tile */
.rx-tile {
    position: relative;
    aspect-ratio: 1;
    background: var(--slate-100);
    border: 2px solid transparent;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.rx-tile:hover { transform: translateY(-2px); border-color: var(--brand-300); }
.rx-tile.is-active {
    border-color: var(--brand-600);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.2);
}
.rx-tile img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.rx-tile-cat-badge {
    position: absolute;
    top: 5px; left: 5px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 2px 7px;
    border-radius: 99px;
    font: 700 9px 'Inter', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.rx-tile-cat-badge.cat-avatar     { background: rgba(168,85,247,0.92); }
.rx-tile-cat-badge.cat-background { background: rgba(99,102,241,0.92); }
.rx-tile-cat-badge.cat-object     { background: rgba(245,158,11,0.92); }
.rx-tile-cat-badge.cat-other      { background: rgba(71,85,105,0.85); }
.rx-tile-name {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.85));
    color: #fff;
    padding: 16px 8px 6px;
    font: 600 10.5px 'Inter', sans-serif;
    line-height: 1.3;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ══════════════════════════════════════════════════════════════════
   LIGHTBOX  —  centered card, 1.5s zoom in/out, polished UI
   Replaces the old right-side drawer.
   ══════════════════════════════════════════════════════════════════ */
.rx-lb {
    position: fixed; inset: 0; z-index: 200;
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
    box-sizing: border-box;
}
.rx-lb[hidden] { display: none; }
.rx-lb-backdrop {
    position: absolute; inset: 0;
    background: rgba(8, 12, 24, 0.78);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity 0.45s ease;
}
.rx-lb.is-open .rx-lb-backdrop  { opacity: 1; }
.rx-lb.is-closing .rx-lb-backdrop { opacity: 0; transition-duration: 0.5s; }

.rx-lb-card {
    position: relative;
    z-index: 1;
    display: flex;
    width: min(960px, 100%);
    max-height: calc(100vh - 48px);
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,0.55), 0 4px 16px rgba(0,0,0,0.25);
    transform: scale(0.6);
    opacity: 0;
    transition:
        transform 1.5s cubic-bezier(0.16, 1, 0.3, 1),
        opacity   1.0s ease;
}
.rx-lb.is-open .rx-lb-card {
    transform: scale(1);
    opacity: 1;
}
.rx-lb.is-closing .rx-lb-card {
    transform: scale(0.6);
    opacity: 0;
    transition:
        transform 1.5s cubic-bezier(0.7, 0, 0.84, 0),
        opacity   0.9s ease 0.2s;
}

.rx-lb-close {
    position: absolute;
    top: 12px; right: 12px;
    z-index: 3;
    width: 34px; height: 34px;
    background: rgba(15, 23, 42, 0.55);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
    display: grid; place-items: center;
    border-radius: 50%;
    cursor: pointer;
    backdrop-filter: blur(8px);
    transition: background 0.15s, transform 0.15s;
    padding: 0;
}
.rx-lb-close:hover { background: rgba(15, 23, 42, 0.8); transform: scale(1.06); }

/* Image area: NO grey. Black bg only fills space when image doesn't —
   landscape images that fully cover have no visible bg; portrait shows
   clean black "letterbox" bars; small images show black around them. */
.rx-lb-image {
    flex: 1.4;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0a0d14;
    overflow: hidden;
}
.rx-lb-image img {
    display: block;
    max-width: 100%;
    max-height: calc(100vh - 48px);
    width: auto;
    height: auto;
    object-fit: contain;
}

/* Side panel — name, meta, fields, actions */
.rx-lb-side {
    flex: 1;
    min-width: 280px;
    max-width: 360px;
    display: flex;
    flex-direction: column;
    padding: 22px 22px 18px;
    overflow-y: auto;
    background: #ffffff;
}
.rx-lb-head { padding-bottom: 14px; border-bottom: 1px solid var(--slate-100); margin-bottom: 14px; }
.rx-lb-name {
    width: 100%;
    font: 700 17px 'Inter', sans-serif;
    color: var(--slate-900);
    background: transparent;
    border: none;
    padding: 4px 0;
    margin-bottom: 6px;
    outline: none;
    border-bottom: 1px dashed transparent;
    transition: border-color 0.12s;
}
.rx-lb-name:hover  { border-bottom-color: var(--slate-200); }
.rx-lb-name:focus  { border-bottom-color: var(--brand-500); }
.rx-lb-meta-line {
    font: 500 11.5px 'Inter', sans-serif;
    color: var(--slate-500);
    line-height: 1.5;
}
.rx-lb-fields { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.rx-lb-field { display: flex; flex-direction: column; gap: 5px; }
.rx-lb-field label {
    font: 800 9.5px 'Inter', sans-serif;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--slate-500);
}
.rx-lb-field select {
    width: 100%; padding: 8px 10px;
    border: 1px solid var(--slate-300);
    border-radius: 8px;
    font: 600 13px 'Inter', sans-serif;
    color: var(--slate-900);
    background: #fff;
    outline: none;
    transition: border-color 0.12s, box-shadow 0.12s;
}
.rx-lb-field select:focus {
    border-color: var(--brand-500);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}
.rx-lb-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 7px;
    margin-top: auto;
}
.rx-lb-btn {
    padding: 9px 12px;
    background: #fff;
    border: 1px solid var(--slate-300);
    border-radius: 9px;
    color: var(--slate-700);
    font: 700 12px 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.12s;
    text-align: center;
}
.rx-lb-btn:hover { background: var(--slate-50); border-color: var(--slate-400); }
.rx-lb-btn.primary {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 6px rgba(37,99,235,0.22);
}
.rx-lb-btn.primary:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37,99,235,0.32); }
.rx-lb-btn.danger {
    background: #fef2f2;
    border-color: #fecaca;
    color: #dc2626;
}
.rx-lb-btn.danger:hover { background: #fee2e2; }

/* ─── Tablet ≤ 1024px: shrink card, reduce side panel max ───────────── */
@media (max-width: 1024px) {
    .rx-lb-card { width: min(880px, 100%); }
    .rx-lb-side { max-width: 320px; padding: 18px; }
}

/* ─── Mobile ≤ 768px: stack vertically (image on top, panel below) ─── */
@media (max-width: 768px) {
    /* Top header: respect the iPhone notch + grow tall enough for fingers */
    .gx-top {
        padding-top: calc(10px + env(safe-area-inset-top, 0));
        padding-bottom: 10px;
        gap: 8px;
    }
    .gx-back { padding: 8px 10px; }
    .gx-btn-primary { padding: 8px 12px; font-size: 12px; }

    .rx-shell {
        grid-template-columns: 1fr;
        padding: 12px 14px;
    }
    .rx-sidebar { position: static; max-height: none; top: auto; }
    .rx-folder-list { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
    .rx-side-title { font-size: 14.5px; padding-bottom: 10px; margin-bottom: 12px; }

    /* Lightbox becomes a near-full-screen sheet */
    .rx-lb { padding: 0; }
    .rx-lb-card {
        width: 100%;
        height: 100%;
        max-height: 100vh;
        flex-direction: column;
        border-radius: 0;
    }
    .rx-lb-image {
        flex: 0 0 auto;
        max-height: 50vh;
    }
    .rx-lb-image img { max-height: 50vh; }
    .rx-lb-side {
        max-width: none;
        flex: 1;
        min-height: 0;
        padding: 16px 16px calc(16px + env(safe-area-inset-bottom, 0));
    }
    .rx-lb-close { top: 10px; right: 10px; width: 38px; height: 38px; }
    .rx-lb-actions { gap: 6px; }
    .rx-lb-btn { padding: 11px 10px; font-size: 12.5px; }
}