:root {
            --background-color: #f0f2f5;
            --content-bg: #ffffff;
            --border-color: var(--main--border-color, #cccfd3);
            --text-color: var(--text-primary, #1a2634);
            --secondary-text: var(--text-secondary, #5a6f84);
            --primary-color: var(--box-title-choose-color, #1D51D2);
            --primary-hover: #163fb0;
            --primary-soft: rgba(29, 81, 210, 0.08);
            --danger-color: #d93025;
            --danger-soft: rgba(217, 48, 37, 0.08);
            --success-color: #2e7d32;
            --success-soft: rgba(46, 125, 50, 0.10);
            --white: #ffffff;
            --footer-bg: var(--footer-color, #141E2B);
            --footer-text: var(--footer-text-color, #a8b9cc);
            --panel-bg: #ffffff;
            --panel-bg-soft: #f7f9fc;
            --panel-bg-hover: #eff3f9;
            --canvas-bg: #e9edf3;
            --ui-radius: 8px;
            --ui-radius-sm: 6px;
            --ui-transition: 0.18s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", 'Segoe UI', Roboto, sans-serif;
            background-color: var(--background-color);
            color: var(--text-color);
            line-height: 1.5;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            height: 100vh;
            margin: 0;
        }

        header {
            background-color: var(--header-color, #1A3C6E);
            padding: 14px 24px;
            border-radius: 0;
            display: flex;
            align-items: center;
            justify-content: space-between !important;
            flex-shrink: 0;
            z-index: 10;
            box-shadow: 0 2px 12px rgba(0, 20, 40, 0.12);
        }

        .logo a {
            color: var(--white);
            font-size: 24px;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-decoration: none;
        }

        .logo a:hover {
            text-decoration: none;
        }

        main {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 0;
            padding: 0;
        }

        footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            text-align: center;
            padding: 8px 16px;
            font-size: 12px;
            line-height: 1.4;
            border-radius: 0;
            flex-shrink: 0;
        }

        input[type="file"] {
            display: none;
        }

        textarea,
        input[type="text"],
        input[type="number"],
        select {
            background-color: var(--content-bg);
            border: var(--border-width, 1px) solid var(--border-color);
            border-radius: var(--ui-radius-sm);
            padding: 4px 8px;
            font-size: 13px;
            color: var(--text-color);
            width: 100%;
            resize: vertical;
            transition: border-color var(--ui-transition), box-shadow var(--ui-transition);
        }

        textarea:focus,
        input[type="text"]:focus,
        input[type="number"]:focus,
        select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px var(--primary-soft);
        }

        select {
            cursor: pointer;
            appearance: auto;
            -webkit-appearance: menulist;
            height: 28px;
            padding: 2px 6px;
            font-size: 13px;
        }

        .main-container {
            display: flex;
            flex: 1;
            min-height: 0;
        }

        .sidebar {
            width: 320px;
            min-width: 320px;
            background-color: var(--panel-bg);
            border-right: var(--border-width, 1px) solid var(--border-color);
            display: flex;
            flex-direction: column;
            flex-shrink: 0;
            overflow: hidden;
        }

        .sidebar-section {
            padding: 12px;
            border-bottom: var(--border-width, 1px) solid var(--border-color);
        }

        .sidebar-section:last-child {
            border-bottom: none;
        }

        .sidebar-section-title {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--secondary-text);
            margin-bottom: 8px;
            font-weight: 600;
            border-left: 3px solid var(--primary-color);
            padding-left: 8px;
            cursor: pointer;
            user-select: none;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: color var(--ui-transition);
        }

        .sidebar-section-title:hover {
            color: var(--primary-color);
        }

        .collapse-icon {
            font-size: 10px;
            transition: transform 0.2s;
            display: inline-block;
            color: var(--primary-color);
        }

        .sidebar-section.collapsed .collapse-icon {
            transform: rotate(-90deg);
        }

        .sidebar-section.collapsed .sidebar-section-content {
            display: none;
        }

        .sidebar-sub-section {
            margin-top: 8px;
            border-top: 1px solid var(--border-color);
            padding-top: 8px;
        }

        .sidebar-sub-section .sidebar-section-title {
            font-size: 12px;
            text-transform: none;
            letter-spacing: 0;
            border-left-color: var(--border-color);
        }

        .sidebar-sub-section.collapsed .sidebar-section-content {
            display: none;
        }

        .upload-buttons {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .upload-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 8px 12px;
            border: var(--border-width, 1px) solid var(--border-color);
            background-color: var(--panel-bg-soft);
            color: var(--text-color);
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            text-align: center;
            position: relative;
            border-radius: var(--ui-radius-sm);
            transition: all var(--ui-transition);
        }

        .upload-btn:hover {
            border-color: var(--primary-color);
            background-color: var(--primary-soft);
            color: var(--primary-color);
        }

        .upload-btn input[type="file"] {
            position: absolute;
            inset: 0;
            opacity: 0;
            cursor: pointer;
            width: 100%;
            height: 100%;
        }

        .clear-btn {
            padding: 6px 12px;
            border: var(--border-width, 1px) solid var(--border-color);
            background: var(--panel-bg);
            color: var(--secondary-text);
            cursor: pointer;
            font-size: 12px;
            text-align: center;
            font-weight: 500;
            border-radius: var(--ui-radius-sm);
            width: 100%;
            transition: all var(--ui-transition);
        }

        .clear-btn:hover {
            color: var(--primary-color);
            border-color: var(--primary-color);
            background-color: var(--primary-soft);
        }

        .clear-btn.primary-btn {
            background: var(--primary-color);
            color: #ffffff;
            border-color: var(--primary-color);
        }

        .clear-btn.primary-btn:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #ffffff;
        }

        .upload-buttons .save-btn {
            margin-top: 4px;
        }

        .class-names-input {
            min-height: 80px;
            background-color: var(--panel-bg-soft);
            font-family: 'Courier New', monospace;
            font-size: 13px;
            color: var(--text-color);
            border: var(--border-width, 1px) solid var(--border-color);
            border-radius: var(--ui-radius-sm);
            padding: 6px 8px;
            resize: vertical;
            width: 100%;
            transition: border-color var(--ui-transition), box-shadow var(--ui-transition);
        }

        .class-names-input:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 3px var(--primary-soft);
        }

        .class-names-hint {
            font-size: 11px;
            color: var(--secondary-text);
            margin-top: 4px;
            line-height: 1.4;
        }

        .unlabeled-hint {
            background-color: var(--danger-color);
            color: #ffffff;
            padding: 8px 12px;
            font-size: 12px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            cursor: pointer;
            border-bottom: var(--border-width, 1px) solid var(--border-color);
            transition: background-color var(--ui-transition);
        }

        .unlabeled-hint:hover {
            background-color: #b3261e;
        }

        .unlabeled-hint .hint-text {
            flex: 1;
            text-align: center;
            pointer-events: none;
        }

        .unlabeled-hint .hint-close {
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            font-size: 16px;
            padding: 0 4px;
            pointer-events: auto;
        }

        .unlabeled-hint .hint-close:hover {
            color: #ffdddd;
        }

        .image-list-container {
            flex: 1;
            overflow-y: auto;
            min-height: 0;
            padding: 4px;
        }

        .image-list-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 8px;
            cursor: pointer;
            margin-bottom: 2px;
            border: var(--border-width, 1px) solid transparent;
            border-radius: var(--ui-radius-sm);
            position: relative;
            transition: background-color var(--ui-transition), border-color var(--ui-transition);
        }

        .image-list-item:hover {
            background-color: var(--panel-bg-hover);
        }

        .image-list-item.active {
            background-color: var(--primary-soft);
            border-color: var(--primary-color);
            box-shadow: 0 0 0 1px var(--primary-color) inset;
        }

        .image-list-item .thumb {
            width: 44px;
            height: 44px;
            border-radius: var(--ui-radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--panel-bg-soft);
            border: var(--border-width, 1px) solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .image-list-item .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            pointer-events: none;
        }

        .thumb-placeholder {
            width: 100%;
            height: 100%;
            background-color: #e6ebf2;
        }

        .image-list-item .file-info {
            flex: 1;
            min-width: 0;
        }

        .image-list-item .file-name {
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            color: var(--text-color);
        }

        .image-list-item .file-meta {
            font-size: 10px;
            color: var(--secondary-text);
            margin-top: 2px;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 1px 6px;
            border-radius: 4px;
            font-size: 10px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        .badge.labeled {
            background: var(--success-soft);
            color: var(--success-color);
            border: 1px solid rgba(46, 125, 50, 0.35);
        }

        .badge.unlabeled {
            background: var(--danger-soft);
            color: var(--danger-color);
            border: 1px solid rgba(217, 48, 37, 0.35);
        }

        .badge.count {
            background: var(--primary-soft);
            color: var(--primary-color);
            border: 1px solid rgba(29, 81, 210, 0.35);
        }

        .delete-img-btn {
            background: none;
            border: none;
            color: var(--secondary-text);
            cursor: pointer;
            font-size: 14px;
            padding: 2px 4px;
            border-radius: 4px;
            min-width: auto;
            opacity: 0.6;
            transition: all var(--ui-transition);
        }

        .delete-img-btn:hover {
            color: var(--danger-color);
            opacity: 1;
            background: var(--danger-soft);
        }

        .edit-settings-area {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .box-list-container {
            max-height: 200px;
            overflow-y: auto;
            border: var(--border-width, 1px) solid var(--border-color);
            border-radius: var(--ui-radius-sm);
            padding: 4px;
            background-color: var(--panel-bg);
        }

        .box-list-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 4px;
            border-bottom: 1px solid var(--panel-bg-hover);
            font-size: 12px;
            cursor: pointer;
            border-left: 3px solid transparent;
            border-radius: 0 4px 4px 0;
            transition: background-color var(--ui-transition);
        }

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

        .box-list-item.selected {
            background-color: var(--primary-soft);
            border-left-color: var(--primary-color);
        }

        .box-list-item.hovered {
            background-color: var(--panel-bg-hover);
            outline: 2px solid var(--primary-color);
            outline-offset: -2px;
        }

        .box-color-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            flex-shrink: 0;
            border: 1px solid rgba(0, 0, 0, 0.15);
        }

        .box-list-item .box-id {
            width: 30px;
            text-align: center;
            color: var(--secondary-text);
        }

        .box-list-item select {
            width: 100px;
            padding: 2px 4px;
            font-size: 12px;
            height: 24px;
        }

        .box-list-item .box-delete-btn {
            background: none;
            border: none;
            color: var(--secondary-text);
            cursor: pointer;
            font-size: 14px;
            padding: 2px;
            min-width: auto;
            opacity: 0.7;
            border-radius: 4px;
            transition: all var(--ui-transition);
        }

        .box-list-item .box-delete-btn:hover {
            color: var(--danger-color);
            background: var(--danger-soft);
            opacity: 1;
        }

        .preview-area {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
            position: relative;
        }

        .canvas-container {
            flex: 1;
            position: relative;
            overflow: hidden;
            cursor: grab;
            background: var(--canvas-bg);
            min-height: 0;
        }

        .canvas-container.grabbing {
            cursor: grabbing;
        }

        .canvas-container.edit-mode {
            cursor: crosshair;
        }

        .canvas-container canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        .preview-overlay {
            position: absolute;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            pointer-events: none;
            z-index: 5;
        }

        .preview-hint {
            background: rgba(255, 255, 255, 0.92);
            padding: 4px 16px;
            border: var(--border-width, 1px) solid var(--border-color);
            border-radius: var(--ui-radius-sm);
            font-size: 12px;
            color: var(--secondary-text);
            pointer-events: auto;
            box-shadow: 0 2px 10px rgba(0, 20, 40, 0.08);
        }

        .preview-hint.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .empty-state {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            color: var(--secondary-text);
            pointer-events: none;
            z-index: 4;
        }

        .empty-state .empty-text {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-color);
        }

        .empty-state .empty-subtext {
            font-size: 13px;
            opacity: 0.8;
        }

        .toolbar {
            background-color: var(--panel-bg);
            border-top: var(--border-width, 1px) solid var(--border-color);
            padding: 8px 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .toolbar-group {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .toolbar-btn {
            width: 32px;
            height: 32px;
            border: var(--border-width, 1px) solid var(--border-color);
            background: var(--panel-bg);
            color: var(--text-color);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            border-radius: var(--ui-radius-sm);
            position: relative;
            transition: all var(--ui-transition);
        }

        .toolbar-btn:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            background-color: var(--primary-soft);
        }

        .toolbar-btn.active {
            border-color: var(--primary-color);
            color: #ffffff;
            background-color: var(--primary-color);
            box-shadow: 0 2px 8px rgba(29, 81, 210, 0.28);
        }

        .toolbar-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
            pointer-events: none;
        }

        .toolbar-btn .tooltip {
            position: absolute;
            bottom: calc(100% + 6px);
            left: 50%;
            transform: translateX(-50%);
            background: #1a2634;
            color: #fff;
            font-size: 10px;
            padding: 2px 6px;
            border-radius: 4px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            border: 1px solid #2a3a4f;
            z-index: 30;
        }

        .toolbar-btn:hover .tooltip {
            opacity: 1;
        }

        .image-counter {
            font-size: 13px;
            font-weight: 500;
            color: var(--secondary-text);
            min-width: 70px;
            text-align: center;
        }

        .image-counter .current {
            color: var(--primary-color);
            font-weight: 700;
            font-size: 16px;
        }

        .separator {
            width: 1px;
            height: 22px;
            background: var(--border-color);
            margin: 0 2px;
        }

        .legend-container {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-left: auto;
        }

        .legend-item {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            color: var(--secondary-text);
            cursor: pointer;
            padding: 2px 6px;
            border-radius: 4px;
            transition: background-color var(--ui-transition);
        }

        .legend-item:hover {
            background: var(--panel-bg-hover);
        }

        .legend-dot {
            width: 10px;
            height: 10px;
            border-radius: 0;
            flex-shrink: 0;
            border: 1px solid rgba(0, 0, 0, 0.18);
        }

        .raw-label-panel {
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 280px;
            background-color: var(--panel-bg);
            border-left: var(--border-width, 1px) solid var(--border-color);
            box-shadow: -8px 0 24px rgba(0, 20, 40, 0.08);
            z-index: 6;
            transform: translateX(100%);
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease;
        }

        .raw-label-panel.open {
            transform: translateX(0);
        }

        .raw-label-panel-header {
            padding: 10px 12px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            font-weight: 600;
            color: var(--secondary-text);
        }

        .raw-label-panel .close-btn {
            background: none;
            border: none;
            color: var(--secondary-text);
            cursor: pointer;
            font-size: 16px;
            padding: 4px;
            border-radius: 4px;
            transition: all var(--ui-transition);
        }

        .raw-label-panel .close-btn:hover {
            color: var(--primary-color);
            background: var(--primary-soft);
        }

        .raw-label-content {
            flex: 1;
            overflow-y: auto;
            padding: 10px 12px;
            font-family: 'Courier New', monospace;
            font-size: 12px;
            line-height: 1.6;
            color: var(--text-color);
            white-space: pre-wrap;
            word-break: break-all;
            background: var(--panel-bg-soft);
            user-select: text;
        }

        .color-list-scroll {
            max-height: 200px;
            overflow-y: auto;
            border: var(--border-width, 1px) solid var(--border-color);
            border-radius: var(--ui-radius-sm);
            padding: 4px;
            background-color: var(--panel-bg);
            margin-top: 6px;
        }

        body.fullscreen-mode header {
            display: none;
        }

        body.fullscreen-mode .toolbar .header-stats {
            display: flex;
            gap: 12px;
            margin-left: auto;
            align-items: center;
        }

        .header-stats {
            display: none;
        }

        .exit-fullscreen-btn {
            position: absolute;
            top: 10px;
            right: 10px;
            z-index: 20;
            background: rgba(26, 38, 52, 0.85);
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--ui-radius-sm);
            padding: 4px 10px;
            cursor: pointer;
            font-size: 12px;
            display: none;
            transition: background var(--ui-transition);
        }

        .exit-fullscreen-btn:hover {
            background: rgba(26, 38, 52, 1);
        }

        body.fullscreen-mode .exit-fullscreen-btn {
            display: block;
        }

        .onnx-status {
            font-size: 12px;
            color: var(--secondary-text);
            margin-top: 4px;
            padding: 4px 8px;
            border-radius: var(--ui-radius-sm);
            background: var(--panel-bg-soft);
            border: 1px solid var(--border-color);
            transition: all var(--ui-transition);
        }

        .onnx-status.loaded {
            border-color: rgba(46, 125, 50, 0.4);
            color: var(--success-color);
            background: var(--success-soft);
        }

        .onnx-status.error {
            border-color: rgba(217, 48, 37, 0.4);
            color: var(--danger-color);
            background: var(--danger-soft);
        }

        .onnx-params {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 8px;
        }

        .onnx-params .param-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--secondary-text);
        }

        .onnx-params .param-row label {
            flex: 0 0 auto;
            margin-right: 10px;
            display: flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }

        .onnx-params .param-row .control-group {
            flex: 0 0 40%;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 6px;
        }

        .onnx-params .param-row input[type="text"],
        .onnx-params .param-row input[type="number"],
        .onnx-params .param-row select {
            width: 100%;
            max-width: 120px;
            padding: 2px 6px;
            font-size: 13px;
            height: 28px;
            background-color: var(--content-bg);
            border: var(--border-width, 1px) solid var(--border-color);
            border-radius: var(--ui-radius-sm);
            color: var(--text-color);
        }

        .onnx-params .param-row input[type="range"] {
            flex: 1;
            min-width: 80px;
            height: 4px;
            -webkit-appearance: none;
            background: #dbe2ec;
            border-radius: 2px;
            outline: none;
        }

        .onnx-params .param-row input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary-color);
            cursor: pointer;
            box-shadow: 0 1px 4px rgba(29, 81, 210, 0.4);
        }

        .onnx-params .param-row input[type="range"]::-moz-range-thumb {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary-color);
            cursor: pointer;
            border: none;
        }

        .onnx-params .param-row .range-value {
            min-width: 28px;
            text-align: right;
            font-size: 12px;
            color: var(--text-color);
        }

        .onnx-params .param-row.checkbox-row {
            justify-content: flex-start;
        }

        .onnx-params .param-row.checkbox-row label {
            flex: 0 0 auto;
            margin-right: 0;
            cursor: pointer;
        }

        .onnx-params .param-row.checkbox-row input[type="checkbox"] {
            margin-right: 6px;
            width: 16px;
            height: 16px;
            accent-color: var(--primary-color);
            cursor: pointer;
        }

        .onnx-actions {
            display: flex;
            gap: 6px;
            margin-top: 8px;
        }

        .onnx-actions .clear-btn {
            flex: 1;
        }

        .onnx-progress {
            display: none;
            margin-top: 8px;
            padding: 8px;
            background: var(--panel-bg-soft);
            border: 1px solid var(--border-color);
            border-radius: var(--ui-radius-sm);
            font-size: 12px;
            color: var(--secondary-text);
            text-align: center;
        }

        .onnx-progress.active {
            display: block;
        }

        .onnx-progress .spinner {
            display: inline-block;
            width: 16px;
            height: 16px;
            border: 2px solid var(--border-color);
            border-top-color: var(--primary-color);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            margin-right: 8px;
            vertical-align: middle;
        }

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

        .class-names-input::-webkit-scrollbar,
        .color-list-scroll::-webkit-scrollbar,
        .box-list-container::-webkit-scrollbar,
        .raw-label-content::-webkit-scrollbar,
        .image-list-container::-webkit-scrollbar,
        .sidebar-section-content::-webkit-scrollbar {
            width: 6px;
        }

        .class-names-input::-webkit-scrollbar-track,
        .color-list-scroll::-webkit-scrollbar-track,
        .box-list-container::-webkit-scrollbar-track,
        .raw-label-content::-webkit-scrollbar-track,
        .image-list-container::-webkit-scrollbar-track,
        .sidebar-section-content::-webkit-scrollbar-track {
            background: transparent;
        }

        .class-names-input::-webkit-scrollbar-thumb,
        .color-list-scroll::-webkit-scrollbar-thumb,
        .box-list-container::-webkit-scrollbar-thumb,
        .raw-label-content::-webkit-scrollbar-thumb,
        .image-list-container::-webkit-scrollbar-thumb,
        .sidebar-section-content::-webkit-scrollbar-thumb {
            background: #c8d2de;
            border-radius: 3px;
        }

        .class-names-input::-webkit-scrollbar-thumb:hover,
        .color-list-scroll::-webkit-scrollbar-thumb:hover,
        .box-list-container::-webkit-scrollbar-thumb:hover,
        .raw-label-content::-webkit-scrollbar-thumb:hover,
        .image-list-container::-webkit-scrollbar-thumb:hover,
        .sidebar-section-content::-webkit-scrollbar-thumb:hover {
            background: var(--primary-color);
        }

        .class-names-input,
        .color-list-scroll,
        .box-list-container,
        .raw-label-content,
        .image-list-container,
        .sidebar-section-content {
            scrollbar-width: thin;
            scrollbar-color: #c8d2de transparent;
        }

        @media (max-width: 768px) {
            .sidebar {
                width: 240px;
                min-width: 240px;
            }

            header {
                padding: 12px 16px;
            }

            .logo a {
                font-size: 18px;
            }

            .toolbar {
                padding: 6px 8px;
                gap: 6px;
            }

            .toolbar-btn {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }

            .image-counter {
                font-size: 11px;
                min-width: 50px;
            }

            .raw-label-panel {
                width: 220px;
            }

            .onnx-params .param-row .control-group {
                flex: 0 0 50%;
            }
        }

        [data-theme="dark"] {
            --background-color: #0d1117;
            --content-bg: #161b22;
            --border-color: #30363d;
            --text-color: #e6edf3;
            --secondary-text: #8b949e;
            --primary-color: #4f8cff;
            --primary-hover: #3a7aee;
            --primary-soft: rgba(79, 140, 255, 0.14);
            --danger-color: #f85149;
            --danger-soft: rgba(248, 81, 73, 0.14);
            --success-color: #3fb950;
            --success-soft: rgba(63, 185, 80, 0.14);
            --white: #e6edf3;
            --footer-bg: #0a0d12;
            --footer-text: #8b949e;
            --header-color: #161B22;
            --panel-bg: #161b22;
            --panel-bg-soft: #1c2128;
            --panel-bg-hover: #21262d;
            --canvas-bg: #0a0d12;
        }

        [data-theme="dark"] .thumb-placeholder {
            background-color: #21262d;
        }

        [data-theme="dark"] .onnx-params .param-row input[type="range"] {
            background: #30363d;
        }

        [data-theme="dark"] .preview-hint {
            background: rgba(22, 27, 34, 0.92);
            color: #c9d1d9;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
        }

        [data-theme="dark"] .toolbar-btn .tooltip {
            background: #30363d;
            border-color: #484f58;
            color: #e6edf3;
        }

        [data-theme="dark"] .unlabeled-hint:hover {
            background-color: #b3261e;
        }

        [data-theme="dark"] .exit-fullscreen-btn {
            background: rgba(230, 237, 243, 0.12);
            border-color: rgba(230, 237, 243, 0.3);
        }

        [data-theme="dark"] .exit-fullscreen-btn:hover {
            background: rgba(230, 237, 243, 0.22);
        }

        [data-theme="dark"] .class-names-input::-webkit-scrollbar-track,
        [data-theme="dark"] .color-list-scroll::-webkit-scrollbar-track,
        [data-theme="dark"] .box-list-container::-webkit-scrollbar-track,
        [data-theme="dark"] .raw-label-content::-webkit-scrollbar-track,
        [data-theme="dark"] .image-list-container::-webkit-scrollbar-track,
        [data-theme="dark"] .sidebar-section-content::-webkit-scrollbar-track {
            background: transparent;
        }

        [data-theme="dark"] .class-names-input::-webkit-scrollbar-thumb,
        [data-theme="dark"] .color-list-scroll::-webkit-scrollbar-thumb,
        [data-theme="dark"] .box-list-container::-webkit-scrollbar-thumb,
        [data-theme="dark"] .raw-label-content::-webkit-scrollbar-thumb,
        [data-theme="dark"] .image-list-container::-webkit-scrollbar-thumb,
        [data-theme="dark"] .sidebar-section-content::-webkit-scrollbar-thumb {
            background: #484f58;
        }

        [data-theme="dark"] .class-names-input::-webkit-scrollbar-thumb:hover,
        [data-theme="dark"] .color-list-scroll::-webkit-scrollbar-thumb:hover,
        [data-theme="dark"] .box-list-container::-webkit-scrollbar-thumb:hover,
        [data-theme="dark"] .raw-label-content::-webkit-scrollbar-thumb:hover,
        [data-theme="dark"] .image-list-container::-webkit-scrollbar-thumb:hover,
        [data-theme="dark"] .sidebar-section-content::-webkit-scrollbar-thumb:hover {
            background: var(--primary-color);
        }

        [data-theme="dark"] .class-names-input,
        [data-theme="dark"] .color-list-scroll,
        [data-theme="dark"] .box-list-container,
        [data-theme="dark"] .raw-label-content,
        [data-theme="dark"] .image-list-container,
        [data-theme="dark"] .sidebar-section-content {
            scrollbar-color: #484f58 transparent;
        }

        body.fullscreen-mode[data-theme="dark"] .exit-fullscreen-btn,
        [data-theme="dark"] body.fullscreen-mode .exit-fullscreen-btn {
            background: rgba(230, 237, 243, 0.12);
            border-color: rgba(230, 237, 243, 0.3);
        }

        [data-theme="dark"] header {
            background-color: var(--header-color);
            border-bottom: 1px solid #2a3346;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        }

        [data-theme="dark"] .logo a {
            color: #e6edf3;
        }