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

        body {
            font-family: 'Noto Sans KR', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            overflow: hidden;
        }

        .header {
            background: linear-gradient(45deg, #2c3e50, #34495e);
            color: white;
            padding: 30px;
            text-align: center;
            position: relative;
        }

        .header h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .header p {
            font-size: 1.1rem;
            opacity: 0.9;
        }

        .logo {
            position: absolute;
            left: 30px;
            top: 50%;
            transform: translateY(-50%);
            width: 60px;
            height: 60px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #2c3e50;
            font-weight: bold;
        }

        .nav-tabs {
            display: flex;
            background: #f8f9fa;
            border-bottom: 2px solid #e9ecef;
            position: relative;
        }

        .nav-tab {
            padding: 20px 30px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: #666;
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }

        .nav-tab.active {
            color: #007bff;
            background: white;
        }

        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 3px;
            background: #007bff;
        }

        .nav-tab:hover {
            background: #e9ecef;
            color: #007bff;
        }

        .language-dropdown {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 10;
        }

        .language-selector {
            position: relative;
            display: inline-block;
        }

        .language-btn {
            background: #007bff;
            color: white;
            padding: 10px 15px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

        .language-btn:hover {
            background: #0056b3;
        }

        .language-menu {
            position: absolute;
            top: 100%;
            right: 0;
            background: white;
            border: 1px solid #e9ecef;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            min-width: 150px;
            z-index: 1000;
            display: none;
            overflow: hidden;
        }

        .language-menu.show {
            display: block;
            animation: fadeInDown 0.3s ease;
        }

        .language-option {
            display: block;
            padding: 12px 15px;
            color: #333;
            text-decoration: none;
            transition: background-color 0.3s ease;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            cursor: pointer;
            font-size: 0.9rem;
        }

        .language-option:hover {
            background: #f8f9fa;
        }

        .language-option.active {
            background: #007bff;
            color: white;
        }

        .language-option i {
            margin-right: 8px;
            width: 16px;
        }

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

        .tab-content {
            display: none;
            padding: 30px;
        }

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

        .search-filter-bar {
            display: flex;
            gap: 15px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            align-items: center;
        }

        .search-box {
            flex: 1;
            min-width: 250px;
            position: relative;
        }

        .search-box input {
            width: 100%;
            padding: 15px 50px 15px 20px;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .search-box input:focus {
            outline: none;
            border-color: #007bff;
        }

        .search-box .search-icon {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #666;
        }

        .filter-select {
            padding: 15px 20px;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            font-size: 1rem;
            background: white;
            cursor: pointer;
            min-width: 200px;
        }

        .btn {
            padding: 12px 24px;
            border: none;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary {
            background: #007bff;
            color: white;
        }

        .btn-primary:hover {
            background: #0056b3;
            transform: translateY(-2px);
        }

        .btn-success {
            background: #28a745;
            color: white;
        }

        .btn-success:hover {
            background: #1e7e34;
        }

        .btn-warning {
            background: #ffc107;
            color: #212529;
        }

        .btn-warning:hover {
            background: #e0a800;
        }

        .btn-danger {
            background: #dc3545;
            color: white;
        }

        .btn-danger:hover {
            background: #c82333;
        }

        .btn-info {
            background: #17a2b8;
            color: white;
        }

        .btn-info:hover {
            background: #138496;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.875rem;
        }

        .table-container {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }

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

        .table th {
            background: #f8f9fa;
            padding: 20px 15px;
            text-align: left;
            font-weight: 600;
            color: #495057;
            border-bottom: 2px solid #e9ecef;
        }

        .table td {
            padding: 20px 15px;
            border-bottom: 1px solid #e9ecef;
            vertical-align: middle;
        }

        .table tr:hover {
            background: #f8f9fa;
        }

        .membership-badge {
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.875rem;
            font-weight: 500;
        }

        .membership-15 {
            background: #d4edda;
            color: #155724;
        }

        .membership-10 {
            background: #fff3cd;
            color: #856404;
        }

        .action-buttons {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            animation: fadeIn 0.3s ease;
        }

        .modal.show {
            display: block;
        }

        .modal-content {
            position: relative;
            background: white;
            margin: 5% auto;
            padding: 0;
            border-radius: 15px;
            width: 90%;
            max-width: 800px;
            max-height: 90vh;
            overflow-y: auto;
            animation: slideIn 0.3s ease;
        }

        .modal-header {
            background: linear-gradient(45deg, #007bff, #0056b3);
            color: white;
            padding: 25px 30px;
            border-radius: 15px 15px 0 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-header h3 {
            margin: 0;
            font-size: 1.5rem;
        }

        .close {
            color: white;
            font-size: 2rem;
            font-weight: bold;
            cursor: pointer;
            line-height: 1;
        }

        .close:hover {
            opacity: 0.7;
        }

        .modal-body {
            padding: 30px;
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #495057;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e9ecef;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: #007bff;
        }

        .service-item {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 15px;
            border-left: 4px solid #007bff;
        }

        .service-item-header {
            display: flex;
            justify-content: between;
            align-items: center;
            margin-bottom: 10px;
        }

        .alert {
            padding: 15px 20px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid;
        }

        .alert-success {
            background: #d4edda;
            color: #155724;
            border-left-color: #28a745;
        }

        .alert-danger {
            background: #f8d7da;
            color: #721c24;
            border-left-color: #dc3545;
        }

        .alert-info {
            background: #d1ecf1;
            color: #0c5460;
            border-left-color: #17a2b8;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes slideIn {
            from { transform: translateY(-50px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }

        /* Tablet optimized styles */
        @media (max-width: 1024px) {
            .container {
                margin: 10px;
                border-radius: 15px;
            }

            .header {
                padding: 20px;
            }

            .header h1 {
                font-size: 2rem;
            }

            .logo {
                width: 50px;
                height: 50px;
                left: 20px;
            }

            .nav-tab {
                padding: 15px 20px;
                font-size: 0.9rem;
            }

            .language-dropdown {
                right: 15px;
            }

            .language-btn {
                padding: 8px 12px;
                font-size: 0.85rem;
            }

            .table th,
            .table td {
                padding: 15px 10px;
                font-size: 0.9rem;
            }

            .action-buttons {
                flex-direction: column;
                gap: 5px;
            }

            .action-buttons .btn {
                width: 100%;
                justify-content: center;
            }

            .search-filter-bar {
                flex-direction: column;
                gap: 10px;
            }

            .search-box,
            .filter-select {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            .header {
                text-align: center;
                padding: 15px;
            }

            .logo {
                position: static;
                transform: none;
                margin: 0 auto 15px;
            }

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

            .nav-tabs {
                flex-wrap: wrap;
                position: relative;
                padding-right: 80px; /* Make space for language dropdown */
            }

            .nav-tab {
                flex: 1;
                min-width: 120px;
                padding: 12px 15px;
                font-size: 0.85rem;
            }

            .language-dropdown {
                right: 10px;
                top: 10px;
                transform: none;
            }

            .language-btn {
                padding: 6px 10px;
                font-size: 0.8rem;
            }

            .language-btn span {
                display: none; /* Hide text on mobile, show only icon */
            }

            .table-container {
                overflow-x: auto;
            }

            .table {
                min-width: 800px;
            }

            .modal-content {
                width: 95%;
                margin: 10px auto;
            }

            .modal-body {
                padding: 20px;
            }
        }

        .loading {
            text-align: center;
            padding: 50px;
            color: #666;
        }

        .loading i {
            font-size: 2rem;
            animation: spin 1s linear infinite;
        }

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

        .empty-state {
            text-align: center;
            padding: 50px;
            color: #666;
        }

        .empty-state i {
            font-size: 3rem;
            color: #ddd;
            margin-bottom: 20px;
        }

        .confirmation-modal .modal-content {
            max-width: 500px;
        }

        .confirmation-buttons {
            display: flex;
            gap: 15px;
            justify-content: flex-end;
            margin-top: 20px;
        }

        /* Service Submission Confirmation Styles */
        .confirmation-content {
            max-height: 500px;
            overflow-y: auto;
        }

        .confirmation-content h4 {
            color: #2c3e50;
            margin: 20px 0 10px 0;
            padding-bottom: 5px;
            border-bottom: 2px solid #e9ecef;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .confirmation-content h4:first-child {
            margin-top: 0;
        }

        .service-list {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 15px;
            margin: 10px 0;
        }

        .service-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid #e9ecef;
        }

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

        .service-name {
            font-weight: 500;
            color: #495057;
        }

        .service-price {
            font-weight: 600;
            color: #28a745;
        }

        .price-breakdown {
            background: #e8f5e8;
            border-radius: 8px;
            padding: 15px;
            margin: 10px 0;
        }

        .price-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 5px 0;
            font-size: 14px;
        }

        .price-row.total {
            border-top: 2px solid #28a745;
            margin-top: 10px;
            padding-top: 10px;
            font-size: 16px;
            color: #28a745;
        }

        .notes-preview {
            background: #fff3cd;
            border: 1px solid #ffeaa7;
            border-radius: 5px;
            padding: 10px;
            font-style: italic;
            color: #856404;
        }

        .confirmation-warning {
            background: #fff3cd;
            border: 1px solid #ffeaa7;
            border-radius: 8px;
            padding: 15px;
            margin: 20px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .confirmation-warning i {
            color: #856404;
            margin-top: 2px;
        }

        .confirmation-warning strong {
            color: #856404;
        }

        .modal-footer {
            display: flex;
            gap: 10px;
            justify-content: flex-end;
            padding: 20px;
            border-top: 1px solid #e9ecef;
            background: #f8f9fa;
        }

        /* Audit Information Section Styles */
        .audit-info-section {
            background: linear-gradient(135deg, #e8f4fd 0%, #f0f8ff 100%);
            border: 1px solid #bee5eb;
            border-radius: 10px;
            padding: 20px;
            margin: 20px 0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }

        .audit-info-section h4 {
            color: #0c5460;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .audit-details {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
        }

        .audit-details > div {
            background: rgba(255, 255, 255, 0.7);
            padding: 12px;
            border-radius: 6px;
            border: 1px solid rgba(190, 229, 235, 0.5);
        }

        .audit-details strong {
            color: #495057;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 6px;
        }

        .audit-details code {
            background: #f8f9fa;
            padding: 4px 8px;
            border-radius: 4px;
            font-family: 'Courier New', monospace;
            font-size: 0.9em;
            border: 1px solid #e9ecef;
        }

        .badge {
            display: inline-block;
            padding: 6px 12px;
            font-size: 0.85em;
            font-weight: 600;
            color: white;
            border-radius: 15px;
            text-transform: uppercase;
        }

        .badge-success {
            background: linear-gradient(45deg, #28a745, #20c997);
        }

        .badge-warning {
            background: linear-gradient(45deg, #ffc107, #fd7e14);
            color: #212529;
        }

        .badge-danger {
            background: linear-gradient(45deg, #dc3545, #e83e8c);
        }

        /* Responsive design for audit section */
        @media (max-width: 768px) {
            .audit-details {
                grid-template-columns: 1fr;
            }
            
            .audit-details code {
                font-size: 0.8em;
                word-break: break-all;
            }
        }

        /* Audit Summary Modal Styles */
        .audit-summary-content {
            max-height: 600px;
            overflow-y: auto;
        }

        .audit-stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin-bottom: 30px;
        }

        .audit-stat-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 20px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            gap: 15px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .audit-icon {
            font-size: 2rem;
            opacity: 0.8;
        }

        .stat-info h3 {
            margin: 0;
            font-size: 2rem;
            font-weight: bold;
        }

        .stat-info p {
            margin: 5px 0 0 0;
            opacity: 0.9;
            font-size: 0.9rem;
        }

        .audit-section {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 20px;
            margin: 20px 0;
            border-left: 4px solid #007bff;
        }

        .audit-section h4 {
            color: #495057;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ip-activity-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .ip-activity-item {
            background: white;
            padding: 12px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            gap: 15px;
            border: 1px solid #e9ecef;
        }

        .ip-code {
            background: #e83e8c;
            color: white;
            padding: 4px 8px;
            border-radius: 4px;
            font-family: monospace;
            font-weight: bold;
        }

        .activity-count {
            background: #28a745;
            color: white;
            padding: 4px 8px;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: bold;
        }

        .last-seen {
            color: #6c757d;
            font-size: 0.85rem;
        }

        .recent-activities-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .activity-item {
            background: white;
            padding: 10px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
            border: 1px solid #e9ecef;
            font-size: 0.9rem;
        }

        .activity-badge {
            font-size: 0.7rem;
            padding: 4px 8px;
            border-radius: 10px;
            font-weight: bold;
            text-transform: uppercase;
        }

        .activity-badge.badge-create {
            background: #28a745;
            color: white;
        }

        .activity-badge.badge-update {
            background: #ffc107;
            color: #212529;
        }

        .activity-badge.badge-delete {
            background: #dc3545;
            color: white;
        }

        .activity-desc {
            flex: 1;
            color: #495057;
        }

        .activity-ip {
            background: #6f42c1;
            color: white;
            padding: 2px 6px;
            border-radius: 3px;
            font-family: monospace;
            font-size: 0.8rem;
        }

        .activity-time {
            color: #6c757d;
            font-size: 0.8rem;
        }

        .audit-actions {
            text-align: center;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #e9ecef;
        }

        /* Search filter bar button styling */
        .search-filter-bar {
            display: flex;
            gap: 15px;
            align-items: center;
            flex-wrap: wrap;
        }

        .search-filter-bar .btn {
            white-space: nowrap;
        }