.container-br {
            max-width: 1400px;
            margin: -35px auto;
            margin-bottom: 60px;
            background: white;
            border-radius: 24px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }
 .config-section {
            padding: 40px;
        }

        .config-title {
            text-align: center;
            margin-bottom: 30px;
        }

        .config-title h2 {
            font-size: 1.8rem;
            color: #333;
            margin-bottom: 10px;
        }

        .config-title p {
            color: #666;
            font-size: 1rem;
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
        }

        .form-group label {
            font-weight: 600;
            color: #333;
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

        .required::after {
            content: ' *';
            color: #e74c3c;
        }

        .input-container {
            position: relative;
            display: flex;
            align-items: center;
        }

        input, select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e1e8ed;
            border-radius: 8px;
            font-size: 1rem;
            transition: all 0.3s ease;
            background: white;
        }

        input:focus, select:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .unit {
            position: absolute;
            right: 12px;
            color: #666;
            font-size: 0.9rem;
            pointer-events: none;
        }

        .dropdown-group {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .dropdown-item-br {
            position: relative;
        }

        .dropdown-item-br select {
            appearance: none;
            background: url('data:image/svg+xml;charset=US-ASCII,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 4 5"><path fill="%23666" d="m0 0l2 2l2-2z"/></svg>') no-repeat right 12px center;
            background-size: 12px;
            padding-right: 36px;
        }

        .options-section {
            margin: 40px 0;
        }

        .options-title {
            font-size: 1.3rem;
            color: #333;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .options-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
        }

        .checkbox-item {
            display: flex;
            align-items: center;
            padding: 12px;
            border: 2px solid #f1f3f4;
            border-radius: 8px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .checkbox-item:hover {
           border-color: #667eea;
            background: rgba(102, 126, 234, 0.05);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
        }

        .checkbox-item input[type="checkbox"] {
            width: 20px;
            height: 20px;
            margin-right: 12px;
            accent-color: #667eea;
        }

        .checkbox-item.checked {
            border-color: #667eea;
            background: rgba(102, 126, 234, 0.1);
        }

        .preview-section {
            background: #f8f9fa;
            padding: 40px;
            text-align: center;
            border-top: 1px solid #e1e8ed;
        }

        .preview-container {
            background: white;
            border: 2px dashed #d1d5da;
            border-radius: 12px;
            padding: 180px 20px;
            margin-bottom: 30px;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .label-preview-wrapper {
            position: relative;
            margin-bottom: 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .label-actual-size {
            background: #f8f9fa;
            border: 2px solid #667eea;
            border-radius: 4px;
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
        }

        .label-actual-size:hover {
            box-shadow: 0 8px 16px rgba(0,0,0,0.15);
        }

        .size-indicators {
            position: absolute;
            top: -30px;
            left: 0;
            right: 0;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .width-indicator {
            position: absolute;
            top: -25px;
            left: 0;
            right: 0;
            height: 1px;
            background: #667eea;
        }

        .width-indicator::before,
        .width-indicator::after {
            content: '';
            position: absolute;
            top: -3px;
            width: 1px;
            height: 7px;
            background: #667eea;
        }

        .width-indicator::before {
            left: 0;
        }

        .width-indicator::after {
            right: 0;
        }

        .height-indicator {
            position: absolute;
            left: -25px;
            top: 0;
            bottom: 0;
            width: 1px;
            background: #667eea;
        }

        .height-indicator::before,
        .height-indicator::after {
            content: '';
            position: absolute;
            left: -3px;
            width: 7px;
            height: 1px;
            background: #667eea;
        }

        .height-indicator::before {
            top: 0;
        }

        .height-indicator::after {
            bottom: 0;
        }

        .size-label {
            position: absolute;
            font-size: 11px;
            font-weight: 600;
            color: #667eea;
            background: white;
            padding: 2px 6px;
            border-radius: 3px;
        }

        .width-label {
            top: -35px;
            left: 50%;
            transform: translateX(-50%);
        }

        .height-label {
            left: -45px;
            top: 50%;
            transform: translateY(-50%) rotate(-90deg);
            transform-origin: center;
        }

        .barcode-preview {
            margin: 10px 0;
        }

        .barcode-text {
            font-family: 'Courier New', monospace;
            font-size: 10px;
            color: #333;
            letter-spacing: 1px;
            margin-top: 5px;
        }

        .preview-text {
            color: #666;
            font-style: italic;
            margin-top: 15px;
        }

        .scale-info {
            color: #888;
            font-size: 0.9rem;
            margin-top: 10px;
            text-align: center;
        }

        .size-presets {
            margin: 20px 0;
        }

        .size-presets h4 {
            color: #333;
            margin-bottom: 15px;
            font-size: 1.1rem;
        }

        .preset-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .preset-btn {
            padding: 8px 16px;
            border: 2px solid #e1e8ed;
            border-radius: 20px;
            background: white;
            color: #333;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }

        .preset-btn:hover {
            border-color: #667eea;
            background: rgba(102, 126, 234, 0.1);
        }

        .preset-btn.active {
            border-color: #667eea;
            background: #667eea;
            color: white;
        }

        .pricing-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 90px;
            margin: 0 -40px -40px -40px;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
            align-items: end;
        }

        .price-breakdown {
            font-size: 0.95rem;
        }

        .price-row {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.2);
        }

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

        .total-price {
            font-size: 1.5rem;
            font-weight: 600;
            text-align: right;
        }

        .action-buttons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .btn-br {
            padding: 12px 24px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            flex: 1;
        }

        .btn-secondary {
            background: rgba(255,255,255,0.2);
            color: white;
            border: 2px solid rgba(255,255,255,0.3);
        }

        .btn-secondary:hover {
            background: rgba(255,255,255,0.3);
        }


        .features-section {
            background: #f8f9fa;
            padding: 60px 20px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .feature-item {
            text-align: center;
            padding: 30px 20px;
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 2rem;
        }

        .feature-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #333;
            margin-bottom: 10px;
        }

        .feature-description {
            color: #666;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .container {
                margin: 0 10px;
            }
            
            .config-section, .preview-section {
                padding: 20px;
            }
            
            .form-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .action-buttons {
                flex-direction: column;
            }
        }

        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            background: #4CAF50;
            color: white;
            padding: 15px 20px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            transform: translateX(400px);
            transition: transform 0.3s ease;
             z-index: 2000;
        }

        .toast.show {
            transform: translateX(0);
        }