/* ========== ERP Theme CSS - Based on erp-frontend-v1 ========== */
        :root {
            /* Primary Colors */
            --primary-blue: #04a9f5;
            --primary-dark: #3f4d67;
            --theme-gradient: linear-gradient(-135deg, #1de9b6 0%, #1dc4e9 100%);

            /* Status Colors */
            --success: #1de9b6;
            --warning: #f4c22b;
            --danger: #f44236;
            --info: #04a9f5;

            /* Neutral Colors */
            --bg-light: #f4f7fa;
            --bg-white: #ffffff;
            --border-color: #eaeaea;
            --text-primary: #3f4d67;
            --text-secondary: #888;
            --text-muted: #a0aec0;

            /* Form Colors */
            --input-bg: #f0f3f6;
            --input-border: #e2e8f0;

            /* Shadows */
            --shadow-card: rgba(67, 71, 85, 0.27) 0px 0px 0.25em, rgba(90, 125, 188, 0.05) 0px 0.25em 1em;
            --shadow-button: 0 10px 20px 0 rgba(0, 0, 0, 0.2);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Open Sans', sans-serif;
            font-size: 14px;
            background: var(--bg-light);
            color: var(--text-secondary);
            min-height: 100vh;
        }

        /* ========== Login Page ========== */
        .login-page {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, #2d3748 100%);
        }

        .login-card {
            background: var(--bg-white);
            border-radius: 8px;
            box-shadow: var(--shadow-card);
            width: 100%;
            max-width: 400px;
            padding: 40px;
        }

        .login-header {
            text-align: center;
            margin-bottom: 30px;
        }

        .login-header h1 {
            color: var(--primary-dark);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .login-header p {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .login-form .form-group {
            margin-bottom: 20px;
        }

        .login-form label {
            display: block;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .login-form input {
            width: 100%;
            padding: 12px 16px;
            font-size: 14px;
            border: 1px solid var(--input-border);
            border-radius: 5px;
            background: var(--input-bg);
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .login-form input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(4, 169, 245, 0.1);
        }

        .login-error {
            background: #fff5f5;
            border: 1px solid #fc8181;
            color: var(--danger);
            padding: 12px 16px;
            border-radius: 5px;
            margin-bottom: 20px;
            font-size: 13px;
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 11px 25px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s;
            border: none;
            text-decoration: none;
        }

        .btn-theme {
            background: var(--theme-gradient);
            color: white;
            border: 1px solid #1de1c2;
            box-shadow: var(--shadow-button);
        }

        .btn-theme:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

        .btn-theme:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: white;
        }

        .btn-primary:hover {
            background: #0398dc;
        }

        .btn-secondary {
            background: #6c757d;
            color: white;
        }

        .btn-secondary:hover {
            background: #5a6268;
        }

        .btn-danger {
            background: var(--danger);
            color: white;
        }

        .btn-danger:hover {
            background: #d32f2f;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-block {
            width: 100%;
        }

        .btn .spinner-sm {
            width: 16px;
            height: 16px;
            border: 2px solid rgba(255,255,255,0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            margin-right: 8px;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        /* ========== App Layout ========== */
        .app-container {
            display: none;
        }

        .app-header {
            background: var(--primary-dark);
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
        }

        .app-header .brand {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .app-header .brand h1 {
            color: white;
            font-size: 18px;
            font-weight: 700;
        }

        .app-header .user-menu {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .app-header .user-info {
            color: rgba(255,255,255,0.8);
            font-size: 13px;
        }

        .app-header .user-info strong {
            color: white;
        }

        .app-header .logout-btn {
            background: rgba(255,255,255,0.1);
            color: white;
            border: 1px solid rgba(255,255,255,0.2);
            padding: 8px 16px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 13px;
            transition: background 0.2s;
        }

        .app-header .logout-btn:hover {
            background: rgba(255,255,255,0.2);
        }

        .erp-status-bar {
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            z-index: 99;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 4px 24px;
            font-size: 11px;
            font-weight: 600;
            transition: background 0.3s;
        }
        .erp-status-bar.status-ok {
            background: #e6f9f0;
            color: #1a7f4b;
        }
        .erp-status-bar.status-warn {
            background: #fff8e6;
            color: #9a6700;
        }
        .erp-status-bar.status-err {
            background: #fde8e8;
            color: #c41e3a;
        }
        .erp-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            display: inline-block;
        }
        .status-ok .erp-dot { background: #1a7f4b; }
        .status-warn .erp-dot { background: #9a6700; }
        .status-err .erp-dot { background: #c41e3a; }

        .app-sidebar {
            position: fixed;
            top: 70px;
            left: 0;
            bottom: 0;
            width: 240px;
            background: var(--primary-dark);
            padding: 20px 0;
            overflow-y: auto;
        }

        .nav-item {
            display: block;
            padding: 14px 24px;
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            border-left: 3px solid transparent;
        }

        .nav-item:hover {
            color: white;
            background: rgba(255,255,255,0.05);
        }

        .nav-item.active {
            color: white;
            background: rgba(255,255,255,0.1);
            border-left-color: var(--success);
        }

        .nav-item .nav-icon {
            margin-right: 12px;
            width: 20px;
            display: inline-block;
            text-align: center;
        }

        .app-main {
            margin-left: 240px;
            margin-top: 70px;
            padding: 24px;
            min-height: calc(100vh - 70px);
        }

        /* ========== Page Header ========== */
        .page-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }

        .page-header h2 {
            color: var(--text-primary);
            font-size: 20px;
            font-weight: 600;
        }

        .page-header .actions {
            display: flex;
            gap: 12px;
        }

        /* ========== Cards ========== */
        .card {
            background: var(--bg-white);
            border-radius: 5px;
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
        }

        .card-header {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .card-header h3 {
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            margin: 0;
        }

        .card-body {
            padding: 20px;
        }

        /* ========== Stats Grid ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            margin-bottom: 24px;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: 5px;
            box-shadow: var(--shadow-card);
            padding: 20px;
            text-align: center;
            border-left: 4px solid var(--border-color);
        }

        .stat-card.critical { border-left-color: var(--danger); }
        .stat-card.urgent { border-left-color: var(--warning); }
        .stat-card.success { border-left-color: var(--success); }
        .stat-card.info { border-left-color: var(--primary-blue); }

        .stat-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        /* ========== Forms ========== */
        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            font-size: 13px;
        }

        .form-control {
            width: 100%;
            padding: 10px 16px;
            font-size: 14px;
            border: 1px solid var(--input-border);
            border-radius: 5px;
            background: var(--input-bg);
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-blue);
            background: var(--bg-white);
        }

        select.form-control {
            cursor: pointer;
        }

        /* ========== Tables ========== */
        .table-container {
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        table th {
            background: var(--bg-light);
            padding: 12px 16px;
            text-align: left;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border-bottom: 1px solid var(--border-color);
        }

        table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 14px;
        }

        table tr:hover td {
            background: var(--bg-light);
        }

        table .title-cell {
            max-width: 280px;
        }

        table .title-cell .title {
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        table .title-cell .subtitle {
            font-size: 12px;
            color: var(--text-muted);
            font-family: 'Consolas', monospace;
        }

        /* ========== Badges ========== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 15px;
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }

        .badge-success {
            background: #1de9b6;
            color: white;
        }

        .badge-warning {
            background: #f5a623;
            color: white;
        }

        .badge-danger {
            background: #e91e63;
            color: white;
        }

        .badge-secondary {
            background: #899fd4;
            color: white;
        }

        .badge-info {
            background: #04a9f5;
            color: white;
        }

        /* Status Badges */
        .status-draft { background: #e2e8f0; color: #4a5568; }
        .status-submitted { background: #bee3f8; color: #2b6cb0; }
        .status-confirmed { background: #c6f6d5; color: #276749; }
        .status-shipped { background: #fefcbf; color: #975a16; }
        .status-received { background: #c6f6d5; color: #22543d; }
        .status-cancelled { background: #fed7d7; color: #c53030; }

        /* Priority Badges */
        .priority-critical { background: #fed7d7; color: #c53030; }
        .priority-urgent { background: #fefcbf; color: #975a16; }
        .priority-plan { background: #c6f6d5; color: #276749; }
        .priority-skip, .priority-low { background: #e2e8f0; color: #718096; }

        /* ========== Search Box ========== */
        .search-box {
            display: flex;
            gap: 12px;
            margin-bottom: 24px;
        }

        .search-box .form-control {
            flex: 1;
            font-size: 16px;
            padding: 14px 20px;
        }

        /* ========== Filter Bar ========== */
        .filter-bar {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            padding: 16px;
            background: var(--bg-white);
            border-radius: 5px;
            box-shadow: var(--shadow-card);
        }

        .filter-bar select {
            min-width: 160px;
        }

        /* ========== Book Card ========== */
        .book-card {
            display: flex;
            gap: 20px;
            padding: 20px;
        }

        .book-cover {
            width: 100px;
            height: 150px;
            background: var(--bg-light);
            border-radius: 4px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .book-cover.placeholder {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 32px;
        }

        .book-details h3 {
            color: var(--text-primary);
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .book-details p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 4px;
        }

        .book-details .isbn-tag {
            display: inline-block;
            background: var(--bg-light);
            padding: 4px 10px;
            border-radius: 4px;
            font-family: 'Consolas', monospace;
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* ========== Vendor Recommendation ========== */
        .vendor-recommendation {
            padding: 20px;
            background: linear-gradient(135deg, rgba(29, 233, 182, 0.1) 0%, rgba(29, 196, 233, 0.1) 100%);
            border-left: 4px solid var(--success);
        }

        .vendor-recommendation h4 {
            color: #276749;
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .vendor-recommendation .vendor-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .vendor-recommendation .vendor-reason {
            color: var(--text-secondary);
            font-size: 13px;
        }

        /* Manual Vendor Selection */
        .manual-vendor-section {
            padding: 20px;
            background: #fffaf0;
            border-left: 4px solid var(--warning);
        }

        .manual-vendor-section h4 {
            color: #c05621;
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .quick-vendors {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 16px 0;
        }

        .quick-vendor-btn {
            padding: 8px 16px;
            background: var(--bg-white);
            border: 2px solid var(--border-color);
            border-radius: 20px;
            cursor: pointer;
            font-size: 13px;
            transition: all 0.2s;
        }

        .quick-vendor-btn:hover {
            border-color: var(--primary-blue);
        }

        .quick-vendor-btn.selected {
            background: var(--primary-blue);
            border-color: var(--primary-blue);
            color: white;
        }

        /* ========== Modal ========== */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
        }

        .modal {
            background: var(--bg-white);
            border-radius: 8px;
            max-width: 800px;
            width: 95%;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }

        .modal-header {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-header h2 {
            color: var(--text-primary);
            font-size: 18px;
            font-weight: 600;
            margin: 0;
        }

        .modal-close {
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-muted);
            padding: 0;
            line-height: 1;
        }

        .modal-close:hover {
            color: var(--text-primary);
        }

        .modal-body {
            padding: 24px;
        }

        .modal-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            gap: 12px;
            justify-content: flex-end;
        }

        /* ========== Toast ========== */
        .toast {
            position: fixed;
            bottom: 24px;
            right: 24px;
            background: var(--text-primary);
            color: white;
            padding: 14px 24px;
            border-radius: 6px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
            animation: slideInUp 0.3s ease;
            z-index: 2000;
        }

        .toast.success {
            background: linear-gradient(-135deg, #1de9b6, #1dc4e9);
        }

        .toast.error {
            background: var(--danger);
        }

        @keyframes slideInUp {
            from { transform: translateY(100%); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }

        /* ========== Loading ========== */
        .loading-container {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-secondary);
        }

        .spinner {
            width: 40px;
            height: 40px;
            border: 3px solid var(--border-color);
            border-top-color: var(--primary-blue);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            margin: 0 auto 16px;
        }

        /* ========== Empty State ========== */
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-secondary);
        }

        .empty-state .icon {
            font-size: 48px;
            margin-bottom: 16px;
        }

        /* ========== Order Items Table ========== */
        .order-items-table input[type="number"] {
            width: 70px;
            padding: 6px 10px;
            border: 1px solid var(--input-border);
            border-radius: 4px;
            font-size: 14px;
        }

        .add-item-row {
            display: grid;
            grid-template-columns: 140px 1fr 80px auto;
            gap: 12px;
            padding: 16px;
            background: var(--bg-light);
            border-radius: 4px;
            margin-top: 16px;
        }

        .add-item-row input {
            padding: 10px 12px;
            border: 1px solid var(--input-border);
            border-radius: 4px;
            font-size: 14px;
        }

        .order-summary {
            background: var(--bg-light);
            padding: 16px;
            border-radius: 4px;
            margin-top: 20px;
        }

        .order-summary p {
            margin: 6px 0;
            color: var(--text-secondary);
        }

        .order-summary strong {
            color: var(--text-primary);
        }

        .status-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }

        /* ========== Responsive ========== */
        @media (max-width: 768px) {
            .app-sidebar {
                display: none;
            }

            .app-main {
                margin-left: 0;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .search-box {
                flex-direction: column;
            }

            .filter-bar {
                flex-direction: column;
            }

            .book-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }

            .add-item-row {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Tab Content Visibility ========== */
        .tab-content {
            display: none;
        }

        .tab-content.active {
            display: block;
        }

        /* ========== Recent Lookups ========== */
        .recent-lookups {
            margin-top: 24px;
        }

        .recent-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
            transition: background 0.2s;
        }

        .recent-item:hover {
            background: var(--bg-light);
        }

        .recent-item:last-child {
            border-bottom: none;
        }

        .recent-item .title {
            font-weight: 500;
            color: var(--text-primary);
        }

        .recent-item .meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== Alternatives Section ========== */
        .alternatives {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
        }

        .alternatives h4 {
            font-size: 12px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .alt-vendor {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 12px;
            background: var(--bg-light);
            border-radius: 4px;
            margin-bottom: 8px;
        }

        /* ========== Purchase History ========== */
        .history-section {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
        }

        .history-section h4 {
            font-size: 12px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .history-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 12px;
            background: var(--bg-light);
            border-radius: 4px;
            margin-bottom: 8px;
            font-size: 13px;
        }

        /* ========== Data Source ========== */
        .data-source {
            font-size: 12px;
            color: var(--text-muted);
            text-align: right;
            padding: 12px 20px;
            border-top: 1px solid var(--border-color);
        }

        .data-source.live {
            color: var(--success);
        }

        /* ========== Stale Warning ========== */
        .stale-warning {
            background: #fffaf0;
            border: 1px solid var(--warning);
            color: #c05621;
            padding: 12px 16px;
            border-radius: 5px;
            margin-bottom: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* ========== Stock Indicator ========== */
        .stock-indicator {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 600;
            font-size: 13px;
        }

        .stock-indicator.critical {
            background: #fed7d7;
            color: #c53030;
        }

        .stock-indicator.low {
            background: #fefcbf;
            color: #975a16;
        }

        .stock-indicator.ok {
            background: #c6f6d5;
            color: #276749;
        }

        .days-badge {
            font-weight: 600;
        }

        .days-badge.critical { color: #c53030; }
        .days-badge.urgent { color: #ed8936; }
        .days-badge.ok { color: #48bb78; }

        /* ========== Order Row ========== */
        .order-row {
            display: grid;
            grid-template-columns: 1.5fr 100px 100px 100px 120px;
            gap: 16px;
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-color);
            align-items: center;
            cursor: pointer;
            transition: background 0.2s;
        }

        .order-row:hover {
            background: var(--bg-light);
        }

        .order-row.header {
            background: var(--bg-light);
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: default;
        }

        .order-row.header:hover {
            background: var(--bg-light);
        }

        .order-vendor .name {
            font-weight: 500;
            color: var(--text-primary);
        }

        .order-vendor .date {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Confidence badges */
        .confidence-high { background: #c6f6d5; color: #276749; }
        .confidence-medium { background: #fefcbf; color: #975a16; }
        .confidence-low { background: #fed7d7; color: #c53030; }

        /* Data Tables */
        .data-table {
            border-collapse: collapse;
            font-size: 13px;
        }

        .data-table th,
        .data-table td {
            padding: 10px 12px;
            border-bottom: 1px solid var(--border-color);
        }

        .data-table th {
            background: var(--bg-light);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .data-table tbody tr:hover {
            background: var(--bg-light);
        }

        .data-table code {
            background: var(--bg-light);
            padding: 2px 6px;
            border-radius: 3px;
            font-size: 12px;
        }

        /* Spreadsheet Table */
        .spreadsheet-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 13px;
        }

        .spreadsheet-table th {
            background: var(--bg-light);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            padding: 12px 10px;
            border-bottom: 2px solid var(--border-color);
            text-align: left;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .spreadsheet-table td {
            padding: 8px 10px;
            border-bottom: 1px solid var(--border-color);
            vertical-align: middle;
        }

        .spreadsheet-table tbody tr:hover {
            background: #f8fafc;
        }

        .spreadsheet-table tbody tr.loading td {
            opacity: 0.5;
        }

        .spreadsheet-table .row-num {
            color: var(--text-muted);
            font-size: 12px;
            font-weight: 500;
        }

        .spreadsheet-table .isbn-cell {
            font-family: Consolas, 'Courier New', monospace;
            font-size: 13px;
        }

        .spreadsheet-table .title-cell {
            max-width: 300px;
        }

        .spreadsheet-table .title-cell .title {
            font-weight: 500;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .spreadsheet-table .title-cell .author {
            font-size: 12px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .spreadsheet-table input[type="number"] {
            width: 70px;
            padding: 6px 8px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            text-align: center;
            font-size: 13px;
        }

        .spreadsheet-table input[type="number"]:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 2px rgba(4, 169, 245, 0.2);
        }

        .spreadsheet-table .price-cell,
        .spreadsheet-table .subtotal-cell {
            text-align: right;
            font-family: 'Tabular Nums', Consolas, monospace;
            font-variant-numeric: tabular-nums;
        }

        .spreadsheet-table .delete-btn {
            background: transparent;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 16px;
        }

        .spreadsheet-table .delete-btn:hover {
            background: #fee2e2;
            color: var(--danger);
        }

        /* Empty spreadsheet state */
        .spreadsheet-empty {
            padding: 40px;
            text-align: center;
            color: var(--text-secondary);
        }

        .spreadsheet-empty .icon {
            font-size: 48px;
            margin-bottom: 12px;
            opacity: 0.5;
        }

        /* Restock Card View */
        /* Restock List - Compact Row Layout */
        .restock-list {
            background: var(--bg-white);
            border-radius: 8px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .restock-list-header {
            display: grid;
            grid-template-columns: 4px 1fr 130px 90px 80px 70px 100px;
            gap: 0;
            padding: 10px 16px;
            background: var(--bg-light);
            border-bottom: 1px solid var(--border-color);
            font-size: 11px;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .restock-list-header > div:first-child {
            padding: 0;
        }

        .restock-row {
            display: grid;
            grid-template-columns: 4px 1fr 130px 90px 80px 70px 100px;
            gap: 0;
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-color);
            align-items: center;
            cursor: pointer;
            transition: background 0.15s;
        }

        .restock-row:hover {
            background: var(--bg-light);
        }

        .restock-row:last-child {
            border-bottom: none;
        }

        .restock-row-indicator {
            width: 4px;
            height: 32px;
            border-radius: 2px;
            margin-right: 12px;
        }

        .restock-row-indicator.critical { background: var(--danger); }
        .restock-row-indicator.urgent { background: var(--warning); }
        .restock-row-indicator.plan { background: var(--success); }
        .restock-row-indicator.low { background: var(--text-muted); }

        .restock-row-title {
            display: flex;
            flex-direction: row;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }

        .restock-cover {
            width: 36px;
            height: 48px;
            object-fit: cover;
            border-radius: 3px;
            flex-shrink: 0;
            background: var(--bg-light);
        }

        .restock-cover-placeholder {
            width: 36px;
            height: 48px;
            flex-shrink: 0;
            background: var(--bg-light);
            border-radius: 3px;
            border: 1px dashed var(--border-color);
        }

        .restock-title-text {
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .restock-row-title .title {
            font-weight: 600;
            font-size: 13px;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .restock-row-title .meta {
            font-size: 11px;
            color: var(--text-muted);
            display: flex;
            gap: 8px;
            margin-top: 2px;
        }

        .restock-row-title .meta .isbn {
            font-family: Consolas, monospace;
        }

        .restock-row-title .meta .vendor {
            color: var(--primary-blue);
        }

        .restock-row-stock {
            font-weight: 700;
            font-size: 14px;
            text-align: center;
            font-variant-numeric: tabular-nums;
        }

        .restock-row-stock.danger { color: var(--danger); }
        .restock-row-stock.warning { color: var(--warning); }
        .restock-row-stock.ok { color: var(--text-primary); }

        .restock-row-stock .stock-label {
            font-size: 10px;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .restock-row-stock .stock-sep {
            color: var(--border-color);
            margin: 0 2px;
        }
        .restock-row-stock .transfer-icon {
            color: var(--info);
            font-size: 12px;
        }

        .restock-row-demand {
            text-align: center;
            font-size: 13px;
            color: var(--text-secondary);
            font-variant-numeric: tabular-nums;
        }

        .restock-row-days {
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            font-variant-numeric: tabular-nums;
        }

        .restock-row-days.critical { color: var(--danger); }
        .restock-row-days.urgent { color: var(--warning); }
        .restock-row-days.plan { color: var(--success); }

        .restock-row-qty {
            text-align: center;
            font-size: 13px;
            color: var(--text-primary);
            font-variant-numeric: tabular-nums;
        }

        .restock-row-action {
            text-align: right;
        }

        .restock-add-btn {
            background: var(--theme-gradient);
            color: white;
            border: none;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.15s;
            white-space: nowrap;
        }

        .restock-add-btn:hover {
            opacity: 0.85;
        }

        /* Expanded row detail */
        .restock-row-detail {
            padding: 16px 16px 16px 32px;
            background: var(--bg-light);
            border-bottom: 1px solid var(--border-color);
            display: none;
            animation: slideDown 0.15s ease-out;
        }

        .restock-row-detail.open {
            display: block;
        }

        @keyframes slideDown {
            from { opacity: 0; transform: translateY(-4px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Insufficient data warning badge (inline in row) */
        .badge-low-data {
            display: inline-block;
            font-size: 10px;
            font-weight: 600;
            padding: 1px 6px;
            border-radius: 3px;
            background: rgba(244, 194, 43, 0.15);
            color: var(--warning);
            border: 1px solid rgba(244, 194, 43, 0.3);
            margin-left: 6px;
            vertical-align: middle;
        }

        /* Insufficient data warning banner (expanded detail) */
        .insufficient-data-warning {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            padding: 10px 14px;
            margin-bottom: 14px;
            border-radius: 6px;
            background: rgba(244, 194, 43, 0.08);
            border: 1px solid rgba(244, 194, 43, 0.25);
            color: var(--text-secondary);
            font-size: 13px;
            line-height: 1.4;
        }

        .insufficient-data-warning .warning-icon {
            color: var(--warning);
            font-size: 16px;
            flex-shrink: 0;
            margin-top: 1px;
        }

        .restock-detail-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 16px;
        }

        .restock-detail-item {
            display: flex;
            flex-direction: column;
        }

        .restock-detail-item .label {
            font-size: 10px;
            text-transform: uppercase;
            color: var(--text-muted);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }

        .restock-detail-item .value {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .restock-detail-actions {
            margin-top: 16px;
            display: flex;
            gap: 8px;
        }

        /* Infinite scroll sentinel */
        .restock-scroll-sentinel {
            padding: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
        }

        .restock-scroll-sentinel .spinner {
            width: 20px;
            height: 20px;
            margin: 0 auto;
        }

        /* Section headers within the list */
        .restock-section-divider {
            padding: 8px 16px;
            background: var(--bg-light);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 8px;
            position: sticky;
            top: 0;
            z-index: 1;
        }

        .restock-section-divider .priority-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
        }

        .restock-section-divider .priority-dot.critical { background: var(--danger); }
        .restock-section-divider .priority-dot.urgent { background: var(--warning); }
        .restock-section-divider .priority-dot.plan { background: var(--success); }
        .restock-section-divider .priority-dot.low { background: var(--text-muted); }

        .restock-section-divider .section-title {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .restock-section-divider .section-count {
            font-size: 11px;
            color: var(--text-muted);
            background: var(--bg-white);
            padding: 2px 8px;
            border-radius: 10px;
        }

        /* Vendor picker in expanded row */
        .restock-vendor-section {
            margin-top: 16px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .restock-vendor-section .section-label {
            font-size: 11px;
            text-transform: uppercase;
            color: var(--text-muted);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
            font-weight: 600;
        }

        .restock-vendor-list {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .restock-vendor-option {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            cursor: pointer;
            transition: border-color 0.15s, background 0.15s;
        }

        .restock-vendor-option:hover {
            border-color: var(--primary-blue);
            background: rgba(4, 169, 245, 0.03);
        }

        .restock-vendor-option.recommended {
            border-color: var(--primary-blue);
            background: rgba(4, 169, 245, 0.05);
        }

        .restock-vendor-option.recommended::before {
            content: '';
            width: 3px;
            height: 24px;
            background: var(--primary-blue);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .restock-vendor-info {
            flex: 1;
            min-width: 0;
        }

        .restock-vendor-info .name {
            font-weight: 600;
            font-size: 13px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .restock-vendor-info .name .rec-badge {
            font-size: 9px;
            background: var(--primary-blue);
            color: white;
            padding: 1px 5px;
            border-radius: 3px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .restock-vendor-info .detail {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .restock-vendor-option .order-btn {
            background: var(--theme-gradient);
            color: white;
            border: none;
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
            opacity: 0;
            transition: opacity 0.15s;
        }

        .restock-vendor-option:hover .order-btn,
        .restock-vendor-option.recommended .order-btn {
            opacity: 1;
        }

        .restock-vendor-loading {
            padding: 12px;
            text-align: center;
            color: var(--text-muted);
            font-size: 12px;
        }

        .restock-vendor-loading .spinner {
            width: 16px;
            height: 16px;
            display: inline-block;
            margin-right: 6px;
            vertical-align: middle;
        }

        /* Responsive: stack on mobile */
        @media (max-width: 768px) {
            .restock-list-header {
                display: none;
            }
            .restock-row {
                grid-template-columns: 4px 1fr;
                grid-template-rows: auto auto;
                gap: 4px;
                padding: 12px;
            }
            .restock-row-stock,
            .restock-row-demand,
            .restock-row-days,
            .restock-row-qty,
            .restock-row-action {
                display: none;
            }
            .restock-row-title .meta {
                flex-wrap: wrap;
            }
            .restock-row-title .meta::after {
                content: attr(data-mobile-stats);
                display: block;
                width: 100%;
                margin-top: 4px;
                font-weight: 600;
            }
        }

        /* Details/Summary styling */
        details summary {
            list-style: none;
        }

        details summary::-webkit-details-marker {
            display: none;
        }

        details summary::before {
            content: '+ ';
        }

        details[open] summary::before {
            content: '- ';
        }

        /* ========== Catalog Scanner ========== */
        .catalog-drop-zone {
            border: 2px dashed var(--border-color);
            border-radius: 8px;
            padding: 40px;
            text-align: center;
            cursor: pointer;
            transition: border-color 0.2s, background 0.2s;
        }
        .catalog-drop-zone:hover,
        .catalog-drop-zone.dragover {
            border-color: var(--primary-blue);
            background: rgba(4, 169, 245, 0.03);
        }
        .catalog-drop-zone .drop-icon {
            font-size: 48px;
            margin-bottom: 12px;
        }

        #catalog-results .table-container { max-height: 500px; overflow-y: auto; }
        #catalog-tbody tr.looked-up { background: rgba(29, 233, 182, 0.05); }
        #catalog-tbody td { font-size: 13px; }
        #catalog-tbody .context-text { color: var(--text-muted); font-size: 11px; max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

        /* ========== Activity Timeline ========== */
        .activity-timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            padding-left: 4px;
        }

        .activity-event {
            display: flex;
            gap: 12px;
            position: relative;
            padding-bottom: 14px;
        }

        .activity-event::before {
            content: '';
            position: absolute;
            left: 7px;
            top: 18px;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }

        .activity-event:last-child::before {
            display: none;
        }

        .activity-event:last-child {
            padding-bottom: 0;
        }

        .activity-dot {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .activity-dot.status-draft { background: #a0aec0; }
        .activity-dot.status-submitted { background: #4299e1; }
        .activity-dot.status-confirmed { background: #48bb78; }
        .activity-dot.status-shipped { background: #ed8936; }
        .activity-dot.status-received { background: #38a169; }
        .activity-dot.status-cancelled { background: #e53e3e; }

        .activity-content {
            flex: 1;
            min-width: 0;
        }

        .activity-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            gap: 8px;
        }

        .activity-action {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 13px;
        }

        .activity-time {
            font-size: 11px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .activity-meta {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 2px;
        }

        /* ========== Order Attribution ========== */
        .editor-attribution {
            margin-top: 12px;
            padding-top: 10px;
            border-top: 1px solid var(--border-color);
            display: flex;
            gap: 20px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .editor-attribution strong {
            color: var(--text-primary);
        }

        .order-vendor .creator {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .ready-for-review {
            font-size: 12px;
            color: var(--warning);
            font-weight: 600;
            padding: 6px 12px;
            background: #fffaf0;
            border: 1px solid var(--warning);
            border-radius: 4px;
        }

        /* Duplicate ISBN inline warning */
        .duplicate-warning {
            margin-top: 12px;
            padding: 10px 12px;
            background: #fff8e6;
            border: 1px solid #f0c040;
            border-radius: 6px;
            font-size: 13px;
        }
        .duplicate-warning-text {
            color: #8a6d00;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .duplicate-warning-actions {
            display: flex;
            gap: 8px;
            justify-content: flex-end;
        }
        .btn-warning {
            background: #e8a000;
            color: #fff;
            border: none;
        }
        .btn-warning:hover {
            background: #cc8c00;
        }
        .duplicate-warning .btn {
            padding: 4px 10px;
            font-size: 12px;
        }
        .duplicate-warning-compact {
            margin-top: 6px;
            padding: 6px 8px;
        }
        .duplicate-warning-compact .duplicate-warning-text {
            font-size: 11px;
            margin-bottom: 6px;
        }

/* ========== Vendor Config — Unified Name Resolution ========== */

/* Form group styles for modals */
.modal-body .form-group {
    margin-bottom: 12px;
}
.modal-body .form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

/* Panel shared styles */
.panel-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin: 4px 0 0 0;
}
.panel-empty {
    text-align: center;
    padding: 24px 16px;
    color: var(--text-muted);
    font-size: 13px;
}
.unresolved-badge {
    display: inline-block;
    background: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 8px;
    margin-left: 6px;
    min-width: 18px;
    text-align: center;
}

/* Panel 1: Unrecognized Names */
.unresolved-panel {
    margin-bottom: 16px;
}
.unresolved-list {
    padding: 0 16px 12px;
}
.unresolved-row {
    display: grid;
    grid-template-columns: 1fr auto auto 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    transition: opacity 0.3s;
}
.unresolved-row:last-child {
    border-bottom: none;
}
.unresolved-row.resolving {
    opacity: 0.4;
    pointer-events: none;
}
.unresolved-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 220px;
}
.unresolved-source {
    flex-shrink: 0;
}
.source-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}
.source-badge--orders {
    background: #e3f2fd;
    color: #1565c0;
}
.source-badge--metadata {
    background: #f3e5f5;
    color: #7b1fa2;
}
.unresolved-confidence {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 80px;
}
.conf-bar {
    display: inline-block;
    width: 40px;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}
.conf-fill {
    display: block;
    height: 100%;
    background: var(--primary-blue);
    border-radius: 3px;
}
.conf-pct {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}
.unresolved-action {
    display: flex;
    align-items: center;
    gap: 6px;
}
.map-dropdown {
    width: 150px;
    padding: 5px 8px;
    font-size: 12px;
    border-radius: 4px;
}
.btn-dismiss {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 6px;
    line-height: 1;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}
.btn-dismiss:hover {
    color: var(--danger);
    background: #f8d7da;
}
.unresolved-seen {
    font-size: 11px;
    color: var(--text-muted);
    text-align: right;
    white-space: nowrap;
}

/* Panel 2: Vendor Accordion */
.vendor-panel {
    margin-bottom: 16px;
}
.vendor-accordion {
    padding: 0;
}
.vendor-accordion-item {
    border-bottom: 1px solid var(--border-color);
}
.vendor-accordion-item:last-child {
    border-bottom: none;
}
.vendor-accordion-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.15s;
}
.vendor-accordion-header:hover {
    background: var(--bg-light);
}
.vendor-accordion-toggle {
    font-size: 10px;
    color: var(--text-muted);
    width: 14px;
    flex-shrink: 0;
}
.vendor-accordion-title {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}
.vendor-accordion-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.vendor-accordion-rank {
    font-size: 11px;
    color: var(--text-muted);
}
.vendor-accordion-summary {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    flex-shrink: 0;
}
.vendor-accordion-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}
.vendor-accordion-actions .btn {
    padding: 3px 8px;
    font-size: 11px;
}

/* Badges in accordion */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-direct {
    background: #04a9f5;
    color: white;
}
.badge-distributor {
    background: #899fd4;
    color: white;
}

/* Expanded vendor body */
.vendor-accordion-body {
    padding: 0 16px 16px 42px;
}
.vendor-section {
    margin-bottom: 16px;
}
.vendor-section:last-child {
    margin-bottom: 0;
}
.vendor-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 8px 0;
}

/* Alias and Publisher tags */
.vendor-aliases,
.vendor-publishers {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}
.alias-tag,
.publisher-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 12px;
}
.alias-name,
.publisher-name {
    color: var(--text-primary);
    font-weight: 500;
}
.alias-store {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
}
.publisher-parent {
    font-size: 11px;
    color: var(--text-muted);
}
.alias-remove {
    background: none;
    border: none;
    font-size: 14px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
    transition: color 0.2s;
}
.alias-remove:hover {
    color: var(--danger);
}
.alias-empty {
    font-size: 12px;
    color: var(--text-muted);
    font-style: italic;
    padding: 4px 0;
}

/* Inline add row */
.inline-add-row {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-top: 6px;
}
.inline-input {
    padding: 5px 8px;
    font-size: 12px;
    width: 160px;
}
.inline-select {
    padding: 5px 8px;
    font-size: 12px;
    width: 70px;
}
.btn-show-all {
    background: none;
    border: none;
    color: var(--primary-blue);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 0;
    font-weight: 500;
}
.btn-show-all:hover {
    text-decoration: underline;
}

/* Responsive: stack unresolved rows on small screens */
@media (max-width: 768px) {
    .unresolved-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .unresolved-name {
        grid-column: 1 / -1;
        max-width: none;
    }
    .unresolved-action {
        grid-column: 1 / -1;
    }
    .vendor-accordion-header {
        flex-wrap: wrap;
    }
    .vendor-accordion-summary {
        width: 100%;
        margin-left: 26px;
    }
    .inline-add-row {
        flex-wrap: wrap;
    }
}

        /* ========== Sales Trend Chart ========== */
        #chart-container {
            background: var(--bg-white);
            border-radius: 8px;
            padding: 12px;
            box-shadow: var(--shadow-card);
        }

        #sales-trend-section .spinner-sm {
            display: inline-block;
            width: 14px;
            height: 14px;
            border: 2px solid rgba(0,0,0,0.1);
            border-top-color: var(--primary-blue);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            vertical-align: middle;
            margin-right: 6px;
        }

        /* Hidden utility */
        .hidden {
            display: none !important;
        }