/* ── Upload Modal (matches review-modal pattern) ── */
        .upload-overlay {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.55);
            backdrop-filter: blur(2px);
            z-index: 3100;
            justify-content: center;
            align-items: flex-start;
            padding-top: 40px;
        }
        .upload-overlay.visible { display: flex; }
        .upload-modal {
            background: var(--panel-bg);
            border: 1px solid var(--panel-border);
            border-radius: var(--r-lg);
            box-shadow: 0 24px 80px rgba(0,0,0,0.6);
            width: 700px;
            max-width: 92vw;
            max-height: calc(100vh - 80px);
            display: flex;
            flex-direction: column;
            transition: width 0.3s ease, max-width 0.3s ease, max-height 0.2s ease, border-radius 0.3s ease;
        }
        .upload-overlay.expanded { padding-top: 20px; }
        .upload-overlay.expanded .upload-modal {
            width: 92vw;
            max-width: 92vw;
            max-height: calc(100vh - 40px);
        }
        .upload-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            padding: 18px 22px 14px;
            border-bottom: 1px solid var(--map-border);
        }
        .upload-header h2 {
            font-size: 13px; font-weight: 600; color: var(--grey-100);
            margin: 0 0 3px;
        }
        .upload-header .up-sub {
            font-size: 11px; color: var(--grey-400); margin: 0;
        }
        .upload-close {
            background: none; border: 1px solid var(--map-border);
            border-radius: var(--r-sm); color: var(--grey-400);
            width: 26px; height: 26px; cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            flex-shrink: 0; transition: all 0.15s;
        }
        .upload-close:hover { color: var(--white); border-color: var(--grey-500); }
        .upload-body {
            overflow-y: auto; flex: 1; padding: 0; min-height: 0;
        }
        .upload-section {
            padding: 14px 22px;
            border-bottom: 1px solid rgba(255,255,255,0.03);
        }
        .upload-section-label {
            font-size: 10px; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase;
            color: var(--map-label); margin-bottom: 10px;
        }
        .upload-dropzone {
            border: 2px dashed var(--map-border);
            border-radius: var(--r-md);
            padding: var(--sp-4);
            text-align: center;
            cursor: pointer;
            transition: all 0.2s;
        }
        .upload-dropzone:hover, .upload-dropzone.dragover {
            border-color: var(--coral);
            background: rgba(255,134,122,0.04);
        }
        .upload-dropzone .icon { font-size: 24px; margin-bottom: var(--sp-1); }
        .upload-dropzone .label {
            font-size: 12px; font-weight: 600; color: var(--grey-300);
        }
        .upload-dropzone .hint {
            font-size: 10px; color: var(--map-label); margin-top: 4px;
        }
        .upload-dropzone.has-file {
            border-color: var(--blue-muted);
            background: rgba(128,191,255,0.04);
        }
        .upload-dropzone.has-file .icon { color: var(--blue-muted); }

        /* Column mapping grid */
        .up-mapping-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 6px 10px;
            align-items: center;
        }
        .up-map-col {
            font-size: 11px; font-family: var(--font-mono); color: var(--grey-200);
            padding: 5px 8px;
            background: rgba(255,255,255,0.03);
            border-radius: var(--r-sm);
            white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
        }
        .up-map-arrow {
            font-size: 11px; color: var(--grey-600); text-align: center;
        }
        .up-map-col.matched { border-left: 2px solid var(--success); }
        .up-map-col.skip { border-left: 2px solid var(--grey-600); opacity: 0.5; }
        .up-mapping-grid select {
            padding: 5px 24px 5px 8px;
            font-size: 11px;
            font-family: var(--font-mono);
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--map-border);
            border-radius: var(--r-sm);
            color: var(--grey-100);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%237E97A8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 6px center;
            min-width: 0; overflow: hidden; text-overflow: ellipsis;
        }
        .up-mapping-grid select.mapped-shared { border-color: var(--success); }
        .up-mapping-grid select.mapped-schema { border-color: var(--blue-muted); }
        .up-mapping-grid select.mapped-prop { border-color: var(--grey-600); }
        .up-type-row {
            display: flex; gap: 12px; align-items: center; margin-bottom: 12px;
        }
        .up-type-row label { font-size: 11px; color: var(--grey-400); white-space: nowrap; }
        .up-type-row select {
            padding: 5px 8px; font-size: 11px;
            background: rgba(255,255,255,0.04); border: 1px solid var(--map-border);
            border-radius: var(--r-sm); color: var(--grey-100);
        }
        .up-type-badge {
            font-size: 10px; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase;
            padding: 2px 6px; border-radius: 3px;
            background: rgba(255,255,255,0.06); color: var(--grey-400);
        }

        /* Preview table */
        .upload-preview { }
        .preview-table {
            width: 100%;
            font-size: 10px;
            font-family: var(--font-mono);
            border-collapse: collapse;
            overflow-x: auto;
            display: block;
        }
        .preview-table th {
            text-align: left;
            padding: 4px 6px;
            color: var(--map-label);
            font-weight: 700;
            border-bottom: 1px solid var(--map-border);
            white-space: nowrap;
        }
        .preview-table td {
            padding: 3px 6px;
            color: var(--grey-300);
            border-bottom: 1px solid rgba(255,255,255,0.03);
            max-width: 120px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .preview-table tr:hover td { background: rgba(255,255,255,0.02); }

        .upload-result {
            padding: 12px 16px;
            border-radius: var(--r-md);
            font-size: 12px;
        }
        .upload-result.success {
            background: rgba(78,205,196,0.08);
            border: 1px solid rgba(78,205,196,0.2);
            color: var(--teal);
        }
        .upload-result.error {
            background: rgba(229,73,58,0.08);
            border: 1px solid rgba(229,73,58,0.2);
            color: var(--error);
        }
        .upload-result .detail {
            font-size: 11px;
            color: var(--map-label);
            margin-top: 4px;
        }
        .upload-errors {
            font-size: 10px;
            font-family: var(--font-mono);
            color: var(--map-label);
            max-height: 100px;
            overflow-y: auto;
            margin-top: 8px;
            padding: 8px;
            background: rgba(0,0,0,0.2);
            border-radius: var(--r-sm);
        }

        /* Duplicate check results */
        .dup-summary {
            padding: 10px 14px;
            border-radius: var(--r-md);
            font-size: 12px;
            margin-bottom: 10px;
        }
        .dup-summary.clean {
            background: rgba(61,187,125,0.08);
            border: 1px solid rgba(61,187,125,0.2);
            color: var(--success);
        }
        .dup-summary.warn {
            background: rgba(245,166,35,0.08);
            border: 1px solid rgba(245,166,35,0.2);
            color: var(--warning);
        }
        .dup-card {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 14px;
            border-bottom: 1px solid rgba(255,255,255,0.04);
            transition: opacity 0.2s, background 0.2s;
        }
        .dup-card:last-child { border-bottom: none; }
        .dup-card.skipped {
            opacity: 0.55;
            background: rgba(229,73,58,0.04);
        }
        .dup-card:hover { background: rgba(255,255,255,0.03); }
        .dup-card .dup-cb { margin-top: 3px; flex-shrink: 0; cursor: pointer; accent-color: var(--error); }
        .dup-card .dup-row-num {
            font-family: var(--font-mono); font-size: 10px; color: var(--grey-600);
            min-width: 28px; text-align: right; margin-top: 2px; flex-shrink: 0;
        }
        .dup-card .dup-content { flex: 1; min-width: 0; }
        .dup-card .dup-upload-name { font-size: 12px; font-weight: 600; color: var(--grey-200); }
        .dup-card .dup-upload-op { font-size: 10px; color: var(--grey-500); margin-top: 1px; }
        .dup-card .dup-op-code {
            display: inline-block;
            font-family: var(--font-mono); font-size: 9px; font-weight: 700;
            background: rgba(255,255,255,0.06); color: var(--grey-400);
            padding: 1px 5px; border-radius: 3px; margin-top: 2px;
        }
        .dup-card .dup-op-code.match { background: rgba(61,187,125,0.15); color: var(--success); }
        .dup-card .dup-arrow {
            color: var(--grey-600); font-size: 14px; margin-top: 2px; flex-shrink: 0;
            padding: 0 4px;
        }
        .dup-card .dup-match-box { flex: 1; min-width: 0; }
        .dup-card .dup-match-name { font-size: 12px; font-weight: 600; color: var(--coral); }
        .dup-card .dup-match-detail { font-size: 10px; color: var(--grey-500); margin-top: 1px; }
        .dup-card .dup-score-col { flex-shrink: 0; text-align: right; min-width: 56px; }
        .dup-severity {
            display: inline-block;
            padding: 2px 7px;
            border-radius: 8px;
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .dup-severity.likely { background: rgba(229,73,58,0.15); color: var(--error); }
        .dup-severity.possible { background: rgba(245,166,35,0.15); color: var(--warning); }
        .dup-card .dup-dist { font-family: var(--font-mono); font-size: 10px; color: var(--grey-500); margin-top: 2px; }
        .dup-also { font-size: 10px; color: var(--grey-600); margin-top: 3px; padding-left: 2px; }
        .dup-actions-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
            padding-top: 8px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 11px;
            color: var(--grey-400);
        }
        .upload-footer {
            display: flex; gap: 8px; padding: 14px 22px;
            border-top: 1px solid var(--map-border);
            align-items: center;
        }
        .upload-footer .up-spacer { flex: 1; }
        .up-legend {
            display: flex; gap: 12px; align-items: center; margin-top: 10px;
            font-size: 10px; color: var(--grey-500);
        }
        .up-legend-item {
            display: flex; align-items: center; gap: 4px;
        }
        .up-legend-dot {
            width: 8px; height: 3px; border-radius: 1px;
        }