/* Base styles that match your existing website */
        :root {
            --primary-color: #212529;
            --secondary-color: #495057;
            --accent-color: #6c757d;
            --text-color: #333333;
            --light-bg: #f8f9fa;
            --dark-bg: #212529;
            --border-radius: 4px;
            --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            --success-color: #28a745;
            --danger-color: #dc3545;
            --warning-color: #ffc107;
            --info-color: #17a2b8;
            --code-bg: #f5f5f5;
            --highlight-color: #ffeeba;
        }

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

        body {
            font-family: "Times New Roman", Times, serif;
            font-style: italic;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-bg);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
            position: relative;
            z-index: 1;
        }

        header {
            background-color: var(--primary-color);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            display: flex;
            align-items: center;
            text-decoration: none;
            color: white;
        }

        .logo i {
            margin-right: 10px;
            color: #adb5bd;
        }

        .nav-links {
            display: flex;
            list-style: none;
        }

        .nav-links li {
            margin-left: 30px;
        }

        .nav-links a {
            color: white;
            font-weight: 500;
            position: relative;
            text-decoration: none;
        }

        .section-title {
            font-size: 36px;
            margin-bottom: 35px;
            color: var(--primary-color);
            position: relative;
            display: inline-block;
            z-index: 1;
        }

        .cyber-accent {
            position: relative;
        }

        .cyber-accent::before {
            content: "";
            position: absolute;
            height: 2px;
            width: 60px;
            background-color: var(--secondary-color);
            bottom: -12px;
            left: 0;
        }

        .cyber-accent::after {
            content: "";
            position: absolute;
            height: 2px;
            width: 30px;
            background-color: #adb5bd;
            bottom: -12px;
            left: 70px;
        }

        /* FIM challenge specific styles */
        .fim-section {
            padding: 80px 0;
        }

        .fim-intro {
            background-color: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin-bottom: 40px;
        }

        .fim-intro h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--primary-color);
        }

        .info-box {
            background-color: #e8f4f8;
            border-left: 4px solid var(--info-color);
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }

        .info-box h4 {
            display: flex;
            align-items: center;
            font-weight: bold;
            margin-bottom: 10px;
            color: var(--primary-color);
        }

        .info-box h4 i {
            margin-right: 10px;
            color: var(--info-color);
        }

        .warning-box {
            background-color: #fff3cd;
            border-left: 4px solid var(--warning-color);
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }

        .warning-box h4 {
            display: flex;
            align-items: center;
            font-weight: bold;
            margin-bottom: 10px;
            color: var(--primary-color);
        }

        .warning-box h4 i {
            margin-right: 10px;
            color: var(--warning-color);
        }

        .progress-container {
            width: 100%;
            background-color: #e9ecef;
            border-radius: 10px;
            margin: 30px 0;
            height: 10px;
        }

        .progress-bar {
            height: 10px;
            border-radius: 10px;
            background-color: var(--secondary-color);
            width: 0%;
            transition: width 1s ease;
        }

        .progress-container.success .progress-bar {
            background-color: var(--success-color);
        }

        .challenge-tabs {
            display: flex;
            margin-bottom: 30px;
            border-bottom: 1px solid #dee2e6;
            overflow-x: auto;
            padding-bottom: 5px;
        }

        .challenge-tab {
            padding: 10px 20px;
            cursor: pointer;
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: all 0.3s ease;
        }

        .challenge-tab:hover {
            color: var(--secondary-color);
        }

        .challenge-tab.active {
            border-bottom-color: var(--secondary-color);
            color: var(--secondary-color);
            font-weight: bold;
        }

        .challenge-container {
            display: none;
        }

        .challenge-active {
            display: block;
        }

        .btn {
            display: inline-block;
            padding: 12px 24px;
            border-radius: var(--border-radius);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            cursor: pointer;
            text-align: center;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }

        .btn-primary:hover {
            background-color: var(--secondary-color);
        }

        .btn-success {
            background-color: var(--success-color);
            color: white;
        }

        .btn-success:hover {
            background-color: #218838;
        }

        .code-block {
            background-color: var(--code-bg);
            padding: 15px;
            border-radius: var(--border-radius);
            overflow-x: auto;
            font-family: monospace;
            font-style: normal;
            margin: 15px 0;
        }

        .terminal {
            background-color: #1e1e1e;
            color: #f8f8f8;
            border-radius: var(--border-radius);
            padding: 20px;
            font-family: "Courier New", monospace;
            margin: 20px 0;
            height: 400px;
            overflow-y: auto;
            font-style: normal;
        }

        .terminal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #333;
            padding: 8px 15px;
            border-radius: var(--border-radius) var(--border-radius) 0 0;
            margin-top: 20px;
        }

        .terminal-header span {
            color: white;
            font-weight: bold;
        }

        .terminal-controls {
            display: flex;
        }

        .terminal-controls span {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-left: 8px;
        }

        .terminal-close {
            background-color: #ff5f56;
        }

        .terminal-minimize {
            background-color: #ffbd2e;
        }

        .terminal-maximize {
            background-color: #27c93f;
        }

        .highlight {
            background-color: var(--highlight-color);
            padding: 2px 4px;
            border-radius: 2px;
        }

        .file-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }

        .file-item {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 15px;
            box-shadow: var(--box-shadow);
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .file-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }

        .file-item i {
            font-size: 40px;
            margin-bottom: 15px;
            color: var(--secondary-color);
        }

        .file-item.modified {
            border: 2px solid var(--danger-color);
        }

        .file-item.modified i {
            color: var(--danger-color);
        }

        .file-details {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 20px;
            box-shadow: var(--box-shadow);
            margin-top: 20px;
            display: none;
        }

        .file-details.active {
            display: block;
        }

        .diff-view {
            background-color: #f8f8f8;
            padding: 15px;
            border-radius: var(--border-radius);
            font-family: monospace;
            font-style: normal;
            margin: 15px 0;
            overflow-x: auto;
        }

        .diff-line {
            padding: 2px 0;
            white-space: pre;
        }

        .diff-added {
            background-color: #e6ffed;
            color: #22863a;
        }

        .diff-removed {
            background-color: #ffeef0;
            color: #cb2431;
        }

        .hash-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }

        .hash-table th, .hash-table td {
            border: 1px solid #dee2e6;
            padding: 10px;
            text-align: left;
        }

        .hash-table th {
            background-color: #f8f9fa;
        }

        .hash-table tr.changed {
            background-color: #ffeeba;
        }

        .task-list {
            margin: 20px 0;
        }

        .task-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
            background-color: white;
            padding: 15px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }

        .task-number {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background-color: var(--secondary-color);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-right: 15px;
            margin-top: 3px;
        }

        .task-content {
            flex-grow: 1;
        }

        .task-content h4 {
            margin-bottom: 10px;
            color: var(--primary-color);
        }

        .command-help {
            background-color: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: var(--border-radius);
            padding: 15px;
            margin: 20px 0;
        }

        .command-help h4 {
            margin-bottom: 10px;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }

        .command-help h4 i {
            margin-right: 10px;
            color: var(--info-color);
        }

        .command-item {
            margin-bottom: 10px;
            padding-bottom: 10px;
            border-bottom: 1px solid #eeeeee;
        }

        .command-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .command-name {
            font-weight: bold;
            display: block;
            margin-bottom: 5px;
            font-family: monospace;
            color: var(--primary-color);
        }

        .certificate-container {
            text-align: center;
            padding: 50px 0;
        }

        .certificate {
            max-width: 800px;
            margin: 0 auto;
            background-color: white;
            padding: 50px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            position: relative;
            border: 20px solid #dad5ce;
        }

        .certificate::before {
            content: '';
            position: absolute;
            top: 15px;
            left: 15px;
            right: 15px;
            bottom: 15px;
            border: 2px solid #d4af37;
        }

        .certificate-content {
            position: relative;
            z-index: 2;
        }

        .certificate-seal {
            position: absolute;
            bottom: 40px;
            right: 60px;
            width: 120px;
            height: 120px;
            background-color: #d4af37;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 40px;
            transform: rotate(-15deg);
            opacity: 0.8;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        footer {
            background-color: var(--dark-bg);
            color: white;
            padding: 30px 0;
            margin-top: 60px;
            text-align: center;
        }

        footer a {
            color: white;
            text-decoration: underline;
        }

        /* Responsive styles */
        @media (max-width: 768px) {
            .file-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .file-grid {
                grid-template-columns: 1fr;
            }
        }