:root {
            /* Light mode colors */
            --bg-primary: #f5f5f5;
            --bg-secondary: #ffffff;
            --bg-tertiary: #f8f9fa;
            --text-primary: #333;
            --text-secondary: #2c3e50;
            --border-color: #ddd;
            --shadow: rgba(0, 0, 0, 0.1);
            --accent-primary: #2c3e50;
            --accent-secondary: #27ae60;
            --accent-info: #3498db;
            --info-bg: #eef5ff;
            --warning-bg: #f8d7da;
            --warning-text: #721c24;
            --warning-border: #dc3545;
            --btn-bg: #ecf0f1;
            --btn-border: #bdc3c7;
            --btn-hover: #dce4e6;
            --reset-btn-bg: #95a5a6;
            --reset-btn-hover: #7f8c8d;
        }

        body.dark-mode {
            /* Dark mode colors */
            --bg-primary: #1a1a1a;
            --bg-secondary: #2d2d2d;
            --bg-tertiary: #3a3a3a;
            --text-primary: #e0e0e0;
            --text-secondary: #ffffff;
            --border-color: #4a4a4a;
            --shadow: rgba(0, 0, 0, 0.5);
            --accent-primary: #4a9eff;
            --accent-secondary: #4caf50;
            --accent-info: #64b5f6;
            --info-bg: #1e3a5f;
            --warning-bg: #5c1a1a;
            --warning-text: #ffcccb;
            --warning-border: #ff6b6b;
            --btn-bg: #3a3a3a;
            --btn-border: #555;
            --btn-hover: #4a4a4a;
            --reset-btn-bg: #5a6a7a;
            --reset-btn-hover: #4a5a6a;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            margin: 0;
            padding: 10px;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        .container {
            max-width: 98%;
            margin: 0 auto;
            padding: 15px;
        }

        .layout-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 900px) {
            .layout-grid {
                grid-template-columns: 1fr 350px;
            }
        }

        .main-content {
            background-color: var(--bg-secondary);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 10px var(--shadow);
            transition: background-color 0.3s ease;
        }

        .sidebar {
            background-color: var(--bg-secondary);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 10px var(--shadow);
            transition: background-color 0.3s ease;
            position: sticky;
            top: 20px;
            height: fit-content;
            max-height: calc(100vh - 40px);
            overflow-y: auto;
        }

        .sidebar-content {
            margin-bottom: 20px;
        }

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        h1 {
            color: var(--text-secondary);
            margin: 0;
            font-size: 24px;
        }

        .theme-toggle {
            background: var(--btn-bg);
            border: 1px solid var(--btn-border);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            padding: 0;
        }

        .theme-toggle:hover {
            background: var(--btn-hover);
            transform: rotate(20deg) scale(1.1);
        }

        .theme-toggle svg {
            width: 20px;
            height: 20px;
            fill: var(--text-primary);
            transition: fill 0.3s ease;
        }

        .permission-grid {
            display: grid;
            grid-template-columns: 100px repeat(3, 1fr);
            /* Permission | Owner | Group | Others */
            gap: 8px;
            margin-bottom: 15px;
            font-size: 14px;
        }

        .permission-header {
            font-weight: bold;
            text-align: center;
            background-color: var(--accent-primary);
            color: white;
            padding: 8px;
            border-radius: 4px;
            font-size: 12px;
        }

        .permission-label {
            font-weight: bold;
            display: flex;
            align-items: center;
            justify-content: flex-start;
            padding-left: 8px;
            font-size: 12px;
        }

        .checkbox-container {
            text-align: center;
            background-color: var(--bg-tertiary);
            padding: 8px;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .checkbox-container:hover {
            background-color: var(--btn-hover);
        }

        .checkbox-container input {
            margin-right: 5px;
            transform: scale(1.2);
        }

        .results-container {
            margin-top: 20px;
            padding: 15px;
            background-color: var(--bg-tertiary);
            border-radius: 8px;
            border-left: 5px solid var(--accent-primary);
        }

        .result-item {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            padding-bottom: 8px;
            border-bottom: 1px dotted var(--border-color);
            font-size: 14px;
        }

        .result-value {
            font-family: monospace;
            font-size: 14px;
            font-weight: bold;
            color: var(--text-secondary);
        }

        #octalInput {
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 4px 8px;
            width: 80px;
            text-align: center;
            color: var(--text-secondary);
            font-family: monospace;
            font-size: 14px;
            font-weight: bold;
            transition: all 0.2s;
        }

        #octalInput:focus {
            outline: none;
            border-color: var(--accent-info);
            box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
            background-color: var(--bg-primary);
        }

        #symbolicDisplay {
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 4px 8px;
            color: var(--text-secondary);
            font-family: monospace;
            font-size: 14px;
            font-weight: bold;
            transition: all 0.2s;
        }

        #symbolicDisplay:focus {
            outline: none;
            border-color: var(--accent-info);
            box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
            background-color: var(--bg-primary);
        }

        .file-type-container,
        .special-perms-container {
            margin: 15px 0;
            padding: 10px;
            background-color: var(--bg-tertiary);
            border-radius: 8px;
            border-left: 5px solid var(--accent-secondary);
            font-size: 14px;
        }

        .file-type-title,
        .special-perms-title {
            margin-bottom: 8px;
            color: var(--accent-secondary);
            font-weight: bold;
        }

        .permission-info {
            margin-top: 20px;
            padding: 10px;
            background-color: var(--info-bg);
            border-radius: 8px;
            border-left: 5px solid var(--accent-info);
            font-size: 14px;
        }

        .info-title {
            color: var(--accent-info);
            font-weight: bold;
            margin-bottom: 8px;
        }

        .warning {
            color: var(--warning-text);
            background-color: var(--warning-bg);
            border-left: 3px solid var(--warning-border);
            padding: 8px;
            border-radius: 4px;
            margin: 8px 0;
            display: none;
            font-size: 12px;
        }

        @media (max-width: 768px) {
            .permission-grid {
                grid-template-columns: 80px repeat(3, 1fr);
                font-size: 12px;
            }

            .permission-label {
                font-size: 10px;
            }

            .result-value {
                font-size: 12px;
            }

            .file-type-container,
            .special-perms-container,
            .results-container,
            .permission-info {
                font-size: 12px;
            }

            h1 {
                font-size: 18px;
            }
        }

        /* Copy Button Styles */
        .result-item {
            align-items: center;
        }

        .octal-toggle-container {
            margin-top: 5px;
            font-size: 11px;
            color: var(--text-secondary);
            display: flex;
            justify-content: flex-end;
            width: 100%;
        }

        .octal-toggle-container label {
            display: flex;
            align-items: center;
            cursor: pointer;
        }

        .octal-toggle-container input {
            margin-right: 5px;
            cursor: pointer;
        }

        .copy-btn {
            background-color: var(--btn-bg);
            border: 1px solid var(--btn-border);
            border-radius: 4px;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 2px 8px;
            font-size: 11px;
            margin-left: 10px;
            transition: all 0.2s;
        }

        .copy-btn:hover {
            background-color: var(--btn-hover);
            transform: translateY(-1px);
        }

        .copy-btn:active {
            transform: translateY(0);
        }

        .copy-btn.copied {
            background-color: #2ecc71;
            color: white;
            border-color: #27ae60;
        }

        /* Reset Button */
        .btn-container {
            text-align: center;
            margin-top: 20px;
        }

        .reset-btn {
            background-color: #95a5a6;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            transition: background 0.3s;
        }

        .reset-btn:hover {
            background-color: #7f8c8d;
        }

        /* Tab Navigation Styles */
        .tab-navigation {
            display: flex;
            gap: 4px;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--border-color);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .tab-btn {
            background: transparent;
            border: none;
            border-bottom: 3px solid transparent;
            color: var(--text-primary);
            cursor: pointer;
            padding: 12px 15px;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
            bottom: -2px;
        }

        .tab-btn:hover {
            color: var(--accent-primary);
            background-color: var(--bg-tertiary);
        }

        .tab-btn.active {
            color: var(--accent-primary);
            border-bottom-color: var(--accent-primary);
            font-weight: 600;
        }

        .tab-content {
            display: none;
            animation: fadeIn 0.3s ease-in-out;
        }

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

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Input field styles for new sections */
        .input-group {
            margin-bottom: 15px;
        }

        .input-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 13px;
        }

        .input-group input[type="text"],
        .input-group select {
            width: 100%;
            padding: 8px 12px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: var(--bg-tertiary);
            color: var(--text-primary);
            font-size: 14px;
            transition: all 0.2s;
        }

        .input-group input[type="text"]:focus,
        .input-group select:focus {
            outline: none;
            border-color: var(--accent-info);
            box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
        }

        /* ACL Rules List */
        .acl-rules-list {
            margin: 15px 0;
            padding: 10px;
            background-color: var(--bg-tertiary);
            border-radius: 4px;
            max-height: 200px;
            overflow-y: auto;
        }

        .acl-rule-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px;
            margin-bottom: 5px;
            background-color: var(--bg-secondary);
            border-radius: 4px;
            font-family: monospace;
            font-size: 13px;
        }

        .acl-rule-item button {
            background-color: #e74c3c;
            color: white;
            border: none;
            padding: 4px 8px;
            border-radius: 3px;
            cursor: pointer;
            font-size: 11px;
        }

        .acl-rule-item button:hover {
            background-color: #c0392b;
        }

        /* Preset buttons */
        .preset-buttons {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin: 10px 0;
        }

        .preset-btn {
            background-color: var(--accent-info);
            color: white;
            border: none;
            padding: 8px 15px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.2s;
        }

        .preset-btn:hover {
            background-color: var(--accent-primary);
            transform: translateY(-1px);
        }

        /* Reference section */
        .reference-section {
            margin-bottom: 25px;
        }

        .reference-section h3 {
            color: var(--accent-primary);
            border-bottom: 2px solid var(--accent-primary);
            padding-bottom: 8px;
            margin-bottom: 12px;
            font-size: 18px;
        }

        .reference-section h4 {
            color: var(--accent-secondary);
            margin-top: 15px;
            margin-bottom: 8px;
            font-size: 15px;
        }

        .reference-section code {
            background-color: var(--bg-tertiary);
            padding: 2px 6px;
            border-radius: 3px;
            font-family: monospace;
            font-size: 13px;
            color: var(--accent-info);
        }

        .reference-section pre {
            background-color: var(--bg-tertiary);
            padding: 12px;
            border-radius: 4px;
            overflow-x: auto;
            border-left: 3px solid var(--accent-info);
            margin: 10px 0;
        }

        .reference-section pre code {
            background: none;
            padding: 0;
        }

        .command-example {
            background-color: var(--bg-tertiary);
            padding: 10px;
            border-radius: 4px;
            margin: 8px 0;
            border-left: 3px solid var(--accent-secondary);
            font-family: monospace;
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .table-responsive {
            overflow-x: auto;
            width: 100%;
            margin-bottom: 20px;
        }

        .reference-section table {
            width: 100%;
            border-collapse: collapse;
            margin: 10px 0;
            font-size: 13px;
        }

        .reference-section table th,
        .reference-section table td {
            padding: 8px;
            border: 1px solid var(--border-color);
            text-align: left;
        }

        .reference-section table th {
            background-color: var(--accent-primary);
            color: white;
            font-weight: 600;
        }

        .reference-section table tr:nth-child(even) {
            background-color: var(--bg-tertiary);
        }

        @media (max-width: 768px) {
            .tab-navigation {
                gap: 4px;
            }

            .tab-btn {
                padding: 10px 12px;
                font-size: 12px;
            }
        }

        /* Sidebar content sections */
        .sidebar-content {
            width: 100%;
        }

        /* Utility Classes */
        .w-120 {
            width: 120px;
            text-align: center;
        }

        .w-150 {
            width: 150px;
            font-weight: bold;
        }

        .acl-grid-template {
            grid-template-columns: 100px 1fr 1fr 1fr;
            margin-bottom: 15px;
        }

        /* Warning Caution - with dark mode support */
        .warning-caution {
            display: none;
            /* Default hidden, show when needed */
            background-color: #fff3cd;
            color: #856404;
            border-color: #ffeeba;
        }

        body.dark-mode .warning-caution {
            background-color: #5a4a2a;
            color: #ffd700;
            border-color: #d4a017;
        }

        /* Chattr Attribute Labels */
        .attr-label {
            display: flex;
            flex-direction: column;
            padding: 8px 12px;
            cursor: pointer;
            border-radius: 4px;
            transition: background-color 0.2s ease;
        }

        .attr-label:hover {
            background-color: var(--btn-hover);
        }

        .attr-label strong {
            color: var(--accent-primary);
            margin-bottom: 2px;
        }

        .section-description {
            padding: 10px 15px;
            background-color: var(--info-bg);
            border-radius: 6px;
            margin-bottom: 15px;
            font-size: 14px;
        }

        .section-description code {
            background-color: var(--bg-tertiary);
            padding: 2px 6px;
            border-radius: 3px;
        }