/* CSS 변수를 이용한 테마 시스템 */
        :root {
            /* 주요 색상 변수 - 데이터 처리는 초록색 */
            --color-primary: #10b981;
            --color-primary-dark: #059669;
            --color-primary-darker: #047857;
            --color-secondary: #6b7280;
            --color-secondary-dark: #4b5563;
            --color-accent: #7c3aed;
            --color-accent-light: #6366f1;

            /* 배경 색상 */
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-tertiary: #f1f5f9;
            --bg-success: #ecfdf5;
            --bg-purple-light: #f3e8ff;
            --bg-purple-lighter: #faf5ff;

            /* 테두리 및 구분선 */
            --border-light: #e5e7eb;
            --border-medium: #d1d5db;
            --border-primary: var(--color-primary);
            --border-purple: var(--color-accent);

            /* 텍스트 색상 */
            --text-primary: #1f2937;
            --text-secondary: #6b7280;
            --text-muted: #9ca3af;
            --text-purple: #553c9a;
            --text-success: #065f46;

            /* 그림자 - 노란색 테마에 맞게 조정 */
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --shadow-primary: 0 4px 16px rgba(16, 185, 129, 0.3);
            --shadow-purple: 0 4px 12px rgba(124, 58, 237, 0.4);

            /* 간격 */
            --spacing-xs: 0.25rem;
            --spacing-sm: 0.5rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-2xl: 3rem;

            /* 둥근 모서리 */
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-2xl: 20px;

            /* 애니메이션 */
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .processor-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: var(--spacing-md);
            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
            min-height: 100vh;
        }

        .processor-header {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: white;
            padding: var(--spacing-2xl) var(--spacing-xl);
            border-radius: var(--radius-xl);
            margin-bottom: var(--spacing-xl);
            text-align: center;
            box-shadow: var(--shadow-primary);
            position: relative;
            overflow: hidden;
        }

        .processor-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .processor-header h1, .processor-header p {
            position: relative;
            z-index: 1;
        }

        /* 최적화된 단계 섹션 */
        .step-section {
            margin-bottom: var(--spacing-2xl);
            border-radius: var(--radius-2xl);
            border: 2px solid var(--border-light);
            background: var(--bg-primary);
            overflow: hidden;
            transition: all var(--transition-slow);
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .step-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: #e5e7eb;
            transition: all 0.4s ease;
        }

        .step-section.active {
            border-color: #10b981;
            box-shadow: 0 12px 40px rgba(16, 185, 129, 0.2);
            transform: translateY(-4px);
        }

        .step-section.active::before {
            background: linear-gradient(135deg, #10b981, #059669);
            width: 6px;
        }

        .step-section.completed {
            border-color: #10b981;
            background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
        }

        .step-section.completed::before {
            background: linear-gradient(135deg, #10b981, #059669);
        }

        .step-section.pending {
            opacity: 0.7;
            transform: scale(0.98);
        }

        .step-header {
            background: linear-gradient(135deg, #f9fafb, #f3f4f6);
            padding: 1.75rem;
            border-bottom: 1px solid #e5e7eb;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 1.25rem;
            transition: all 0.3s ease;
        }

        .step-header:hover {
            background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
            transform: translateY(-1px);
        }

        .step-header.active {
            background: linear-gradient(135deg, #ecfdf5, #d1fae5);
            border-bottom: 2px solid #10b981;
        }

        .step-content {
            padding: 2.5rem;
            display: none;
            line-height: 1.6;
        }

        .step-content.active {
            display: block;
            animation: slideDown 0.4s ease-out;
        }

        @keyframes slideDown {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .upload-zone {
            border: 3px dashed #10b981;
            border-radius: 16px;
            padding: 3rem 2rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            background: linear-gradient(135deg, #f0fdf4, #dcfce7);
        }

        .upload-zone:hover {
            border-color: #059669;
            background: linear-gradient(135deg, #dcfce7, #bbf7d0);
            transform: translateY(-2px);
        }

        .upload-zone.dragover {
            border-color: #047857;
            background: linear-gradient(135deg, #bbf7d0, #a7f3d0);
        }

        /* 버튼 최적화 */
        .btn {
            padding: var(--spacing-md) var(--spacing-xl);
            border: none;
            border-radius: var(--radius-lg);
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-normal);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.625rem;
            font-size: 1rem;
            min-height: 48px;
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s ease;
        }

        .btn:hover::before {
            left: 100%;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: white;
            box-shadow: var(--shadow-primary);
        }

        .btn-primary:hover:not(:disabled) {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
            background: linear-gradient(135deg, #059669, #047857);
        }

        .btn-primary:active:not(:disabled) {
            transform: translateY(-1px) scale(0.98);
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
        }

        .btn-secondary {
            background: linear-gradient(135deg, #6b7280, #4b5563);
            color: white;
            box-shadow: 0 4px 16px rgba(107, 114, 128, 0.2);
        }

        .btn-secondary:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(107, 114, 128, 0.3);
            background: linear-gradient(135deg, #4b5563, #374151);
        }

        .btn-secondary:active:not(:disabled) {
            transform: translateY(-1px) scale(0.98);
            box-shadow: 0 4px 12px rgba(107, 114, 128, 0.3);
        }

        .btn:active:not(.btn-primary):not(.btn-secondary) {
            transform: translateY(-1px) scale(0.98);
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
        }

        .btn:disabled {
            background: #e5e7eb;
            color: #9ca3af;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .btn:disabled::before {
            display: none;
        }

        /* 데이터 테이블 */
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            margin: 1rem 0;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }

        .data-table th,
        .data-table td {
            border: 1px solid #e5e7eb;
            padding: 0.75rem 0.5rem;
            text-align: left;
        }

        .data-table th {
            background: linear-gradient(135deg, #f8fafc, #f1f5f9);
            font-weight: 600;
            position: sticky;
            top: 0;
            z-index: 10;
            border-bottom: 2px solid #e5e7eb;
        }

        .data-table tbody tr:nth-child(even) {
            background: #fafafa;
        }

        .data-table tbody tr:hover {
            background: #f0f9ff;
        }

        .data-preview {
            background: #fafafa;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            padding: 1rem;
            max-height: 400px;
            overflow: auto;
            margin: 1rem 0;
        }

        /* 알림 시스템 */
        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            background: white;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            padding: 1rem 1.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            z-index: 1000;
            transform: translateX(400px);
            transition: transform 0.3s ease;
            max-width: 350px;
        }

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

        .notification.success {
            border-color: #10b981;
            background: #ecfdf5;
            color: #065f46;
        }

        .notification.error {
            border-color: #ef4444;
            background: #fef2f2;
            color: #dc2626;
        }

        .notification.info {
            border-color: #3b82f6;
            background: #eff6ff;
            color: #1d4ed8;
        }

        /* 진행률 표시 */
        .progress-indicator {
            background: #f0f9ff;
            border: 1px solid #bae6fd;
            border-radius: 8px;
            padding: 1rem;
            margin: 1rem 0;
        }

        .progress-bar {
            background: #e5e7eb;
            border-radius: 8px;
            height: 8px;
            overflow: hidden;
            margin: 0.5rem 0;
        }

        .progress-fill {
            background: linear-gradient(135deg, #10b981, #059669);
            height: 100%;
            border-radius: 8px;
            transition: width 0.3s ease;
        }

        .action-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            margin: 2rem 0;
            flex-wrap: wrap;
        }

        /* 모바일 최적화 */
        @media (max-width: 768px) {
            .processor-container {
                padding: 0.75rem;
            }

            .processor-header {
                padding: 1.5rem;
                margin-bottom: 1.5rem;
            }

            .step-section {
                margin-bottom: 1.5rem;
                border-radius: 16px;
            }

            .step-content {
                padding: 1.5rem;
            }

            .action-buttons {
                flex-direction: column;
                align-items: center;
                gap: 1rem;
                margin: 1.5rem 0;
            }

            .btn {
                width: 100%;
                max-width: 320px;
                justify-content: center;
                padding: 1.25rem 2rem;
                font-size: 1.1rem;
            }

            .upload-zone {
                padding: 2rem 1rem;
            }

            .variable-item {
                padding: 1rem 0.75rem;
            }

            /* 테이블 반응형 */
            .data-table {
                font-size: 0.9rem;
            }

            .data-table th,
            .data-table td {
                padding: 0.5rem 0.25rem;
            }
        }

        @media (max-width: 480px) {
            .processor-header h1 {
                font-size: 1.5rem;
            }

            .step-header h3 {
                font-size: 1.1rem;
            }

            .btn {
                font-size: 1rem;
                padding: 1rem 1.5rem;
            }

            .data-table {
                font-size: 0.8rem;
            }

            .data-table th,
            .data-table td {
                padding: 0.4rem 0.2rem;
            }

            /* 가로 스크롤 처리 */
            .table-container {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
        }

        .step-badge {
            background: #10b981;
            color: white;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-size: 0.8rem;
            margin-left: auto;
        }

        .variable-list {
            display: grid;
            gap: 0.5rem;
            margin: 1rem 0;
        }

        /* 카테고리 스크롤 영역 */
        .category-scroll-container {
            max-height: 400px;
            overflow-y: auto;
            padding-right: 0.5rem;
            margin-bottom: 1rem;
        }

        /* 스크롤바 스타일링 */
        .category-scroll-container::-webkit-scrollbar {
            width: 8px;
        }

        .category-scroll-container::-webkit-scrollbar-track {
            background: #f1f5f9;
            border-radius: 4px;
        }

        .category-scroll-container::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 4px;
        }

        .category-scroll-container::-webkit-scrollbar-thumb:hover {
            background: #94a3b8;
        }

        .variable-item {
            background: #ffffff;
            border: 2px solid #e5e7eb;
            border-radius: 16px;
            padding: 1.25rem;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            position: relative;
            overflow: hidden;
        }

        .variable-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: #e5e7eb;
            transition: all 0.3s ease;
        }

        .variable-item:hover {
            background: #f8fafc;
            border-color: #10b981;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.15);
        }

        .variable-item:hover::before {
            background: #10b981;
            width: 6px;
        }

        .variable-item.active {
            background: #ecfdf5;
            border-color: #10b981;
            box-shadow: 0 8px 32px rgba(16, 185, 129, 0.2);
        }

        .variable-item.active::before {
            background: linear-gradient(135deg, #10b981, #059669);
            width: 6px;
        }

        .variable-item.completed {
            background: #f0fdf4;
            border-color: #10b981;
        }

        .variable-item.completed::before {
            background: linear-gradient(135deg, #10b981, #059669);
        }

        .variable-item:focus-visible {
            outline: 2px solid #10b981;
            outline-offset: 2px;
        }

        /* 체크박스 스타일링 - 접근성 강화 */
        input[type="checkbox"] {
            width: 20px;
            height: 20px;
            accent-color: #10b981;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s ease;
        }

        input[type="checkbox"]:focus-visible {
            outline: 2px solid #10b981;
            outline-offset: 2px;
        }

        input[type="checkbox"]:hover {
            transform: scale(1.1);
        }

        /* 큰 체크박스 (카테고리용) */
        .large-checkbox {
            width: 24px !important;
            height: 24px !important;
            transform: scale(1.1);
        }

        .large-checkbox:hover {
            transform: scale(1.2);
        }

        .mapping-input {
            width: 95px;
            padding: 0.75rem 0.625rem;
            border: 2px solid #e5e7eb;
            border-radius: 10px;
            text-align: center;
            font-weight: 500;
            transition: all 0.2s ease;
            min-height: 48px;
            font-size: 1rem;
            background: white;
        }

        .mapping-input:focus {
            outline: none;
            border-color: #10b981;
            box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
            transform: translateY(-1px);
        }

        .mapping-input:hover {
            border-color: #10b981;
        }

        /* 입력 필드 공통 스타일링 */
        input[type="number"], input[type="text"], select {
            padding: 0.75rem 1rem;
            border: 2px solid #e5e7eb;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.2s ease;
            background: white;
            font-weight: 500;
            min-height: 48px;
        }

        input[type="number"]:focus, input[type="text"]:focus, select:focus {
            outline: none;
            border-color: #10b981;
            box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
        }

        input[type="number"]:hover, input[type="text"]:hover, select:hover {
            border-color: #10b981;
        }

        .info-box {
            border-radius: 16px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            border: 2px solid;
            position: relative;
            overflow: hidden;
        }

        .info-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            transition: all 0.3s ease;
        }

        .info-box h4, .info-box h5 {
            margin-top: 0;
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        /* 정보 박스 타입별 스타일링 */
        .info-primary {
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            border-color: #3b82f6;
            color: #1d4ed8;
        }

        .info-primary::before {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
        }

        .info-success {
            background: linear-gradient(135deg, #f0fdf4, #dcfce7);
            border-color: #10b981;
            color: #065f46;
        }

        .info-success::before {
            background: linear-gradient(135deg, #10b981, #059669);
        }

        .info-warning {
            background: linear-gradient(135deg, #fffbeb, #fef3c7);
            border-color: #f59e0b;
            color: #92400e;
        }

        .info-warning::before {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }

        .info-error {
            background: linear-gradient(135deg, #fef2f2, #fecaca);
            border-color: #ef4444;
            color: #991b1b;
        }

        .info-error::before {
            background: linear-gradient(135deg, #ef4444, #dc2626);
        }



        .info-primary {
            background: #eff6ff;
            border: 1px solid #bae6fd;
            color: #1d4ed8;
        }

        .loading {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 2rem;
            color: #10b981;
        }

        .spinner {
            width: 24px;
            height: 24px;
            border: 3px solid #e5e7eb;
            border-top: 3px solid #10b981;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        /* 헤더 고정 + 부드러운 숨김 기능 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            border-bottom: 1px solid rgba(0,0,0,0.1);
            transition: all 0.4s cubic-bezier(0.4, 0.0, 0.2, 1);
        }

        .header.hidden {
            transform: translateY(-100%);
            opacity: 0;
        }

        .processor-container {
            margin-top: 120px; /* 헤더 높이만큼 여백 추가 */
        }

        /* 네비게이션 메뉴 스타일 */
        .nav-menu {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }

        .back-to-main, .nav-link {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .back-to-main:hover, .nav-link:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .nav-link.nav-highlight {
            background: linear-gradient(135deg, #6366f1, #4f46e5);
            border: 2px solid rgba(255, 255, 255, 0.4);
            box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
            animation: pulse-glow 2s infinite;
        }

        .nav-link.nav-highlight:hover {
            background: linear-gradient(135deg, #4f46e5, #4338ca);
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
        }

        @keyframes pulse-glow {
            0%, 100% {
                box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
            }
            50% {
                box-shadow: 0 4px 16px rgba(99, 102, 241, 0.5);
            }
        }

        /* 모바일 네비게이션 최적화 */
        @media (max-width: 768px) {
            .nav-menu {
                flex-direction: column;
                gap: 0.5rem;
            }

            .back-to-main, .nav-link {
                width: 100%;
                text-align: center;
                padding: 0.875rem 1.25rem;
            }
        }

        /* 모바일 반응형 개선 */
        @media (max-width: 768px) {
            .processor-container {
                padding: 0.75rem;
                margin-top: 100px;
            }

            .step-content {
                padding: 1.5rem;
            }

            .step-header {
                padding: 1.25rem;
                gap: 1rem;
            }

            .processor-header {
                padding: 1.5rem;
                margin-bottom: 1.5rem;
            }

            .processor-header h1 {
                font-size: 1.5rem;
            }

            /* 2열 그리드를 모바일에서 1열로 */
            .step-content > div[style*="grid-template-columns: 1fr 1fr"] {
                display: block !important;
            }

            .step-content > div[style*="grid-template-columns: 1fr 1fr"] > div {
                margin-bottom: 1.5rem;
            }

            /* 데이터 테이블 스크롤 */
            .data-table {
                font-size: 0.8rem;
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }

            .data-table th,
            .data-table td {
                padding: 0.5rem 0.25rem;
            }
        }

        @media (max-width: 480px) {
            .processor-container {
                padding: 0.5rem;
                margin-top: 90px;
            }

            .step-header {
                padding: 1rem;
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }

            .step-header h3 {
                font-size: 1.1rem;
            }
        }

        /* 향상된 시각적 피드백 */
        .status-indicator {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 0.75rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-left: 0.5rem;
        }

        .status-completed {
            background: #d1fae5;
            color: #065f46;
            border: 1px solid #10b981;
        }

        .status-pending {
            background: #fef3c7;
            color: #92400e;
            border: 1px solid #fbbf24;
        }

        .status-processing {
            background: #dbeafe;
            color: #1e40af;
            border: 1px solid #3b82f6;
        }

        /* 개선된 그리드 레이아웃 */
        .two-column-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 1.5rem 0;
        }

        @media (max-width: 768px) {
            .two-column-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* 단계 번호 원형 개선 */
        .step-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .step-circle.pending {
            background: #e5e7eb;
            color: #6b7280;
        }

        .step-circle.active {
            background: linear-gradient(135deg, #10b981, #059669);
            color: white;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
        }

        .step-circle.completed {
            background: linear-gradient(135deg, #10b981, #059669);
            color: white;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
        }

        /* 개선된 드롭다운 스타일 */
        select {
            appearance: none;
            background-image:
                linear-gradient(45deg, transparent 50%, #374151 50%),
                linear-gradient(135deg, #374151 50%, transparent 50%);
            background-position:
                calc(100% - 15px) calc(50% - 2px),
                calc(100% - 10px) calc(50% - 2px);
            background-size:
                5px 5px,
                5px 5px;
            background-repeat: no-repeat;
            padding-right: 2.5rem !important;
        }

        select:hover {
            background-color: #f8fafc;
            transform: translateY(-1px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1) !important;
        }

        select:active {
            transform: translateY(0);
            box-shadow: 0 2px 4px rgba(0,0,0,0.1) !important;
        }

        /* 부드러운 섹션 전환 애니메이션 */
        .fade-in {
            animation: fadeInUp 0.6s ease-out forwards;
            opacity: 0;
            transform: translateY(20px);
        }

        .fade-out {
            animation: fadeOut 0.4s ease-out forwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeOut {
            from {
                opacity: 1;
                transform: translateY(0);
            }
            to {
                opacity: 0;
                transform: translateY(-10px);
            }
        }

        /* 파일 분석 완료 섹션 여백 추가 */
        #fileInfo {
            margin: var(--spacing-xl) 0 !important;
        }

        /* 리커트 척도 관련 클래스 */
        .btn-likert-merge {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light)) !important;
            color: white !important;
            border: none !important;
            padding: var(--spacing-sm) var(--spacing-md) !important;
            border-radius: var(--radius-md) !important;
            font-size: 0.8rem !important;
            font-weight: 700 !important;
            transition: all var(--transition-normal) !important;
            box-shadow: var(--shadow-purple) !important;
            margin: var(--spacing-xs) 0 !important;
        }

        .btn-likert-merge:hover {
            transform: translateY(-2px) !important;
            box-shadow: 0 6px 16px rgba(124, 58, 237, 0.5) !important;
        }

        .btn-likert-merge:active {
            transform: translateY(-1px) scale(0.98) !important;
        }

        .variable-item-likert {
            background: linear-gradient(135deg, var(--bg-purple-light), var(--bg-purple-lighter)) !important;
            border: 2px solid var(--border-purple) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: var(--spacing-md) !important;
        }

        .variable-item-likert .variable-name {
            color: var(--text-purple) !important;
        }

        .variable-item-likert .variable-status {
            color: var(--color-accent) !important;
        }

        /* 접근성 개선 */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* 포커스 표시 개선 */
        button:focus-visible,
        select:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* 데이터 처리는 초록색, 표 제작은 노란색으로 구분 */
        .header {
            background: linear-gradient(135deg, #10b981, #059669) !important;
        }

        .back-to-main {
            background: rgba(255, 255, 255, 0.2) !important;
            color: white !important;
            text-decoration: none !important;
            padding: 0.5rem 1rem !important;
            border-radius: 6px !important;
            font-size: 0.9rem !important;
            font-weight: 500 !important;
            transition: all 0.3s ease !important;
            border: 1px solid rgba(255, 255, 255, 0.3) !important;
        }

        .back-to-main:hover {
            background: rgba(255, 255, 255, 0.3) !important;
            transform: translateY(-1px) !important;
        }