body {
            font-family: 'Roboto', sans-serif;
            margin: 0;
            padding: 0;
            display: flex;
            height: 100vh;
            background: #f9f9f9;
        }
        #header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: #fff;
            padding: 10px 20px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        #header-left {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        #header-left .logo {
            font-size: 20px;
            font-weight: bold;
            color: #4CAF50;
        }
        #header-right {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-right: 2%;
        }
        #header-right input[type="text"] {
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 14px;
        }
        #header-right button {
            padding: 8px 12px;
            background: #4CAF50;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 14px;
        }
        #header-right button:hover {
            background: #45a049;
        }
        #header-right select {
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 14px;
        }
        #input-section {
            width: 30%;
            padding: 80px 20px 20px; /* Adjusted for header */
            background: #fff;
            border-right: 1px solid #ddd;
            box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);];
            height: 100%;
        }
        #input-section h2 {
            margin-top: 0;
            color: #333;
        }
        #input-section textarea {
            width: 95%;
            height: 200px;
            font-family: monospace;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
            resize: none;
            font-size: 14px;
        }
        #input-section button {
            display: block;
            width: 100%;
            padding: 10px;
            margin-top: 10px;
            background: #4CAF50;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 14px;
        }
        #input-section button:hover {
            background: #45a049;
        }
        #visualization-section {
            width: 70%;
            padding: 80px 20px 20px; /* Adjusted for header */
            overflow: auto;
            height: 100vh;
            background: #fff;
        }
        #graph {
            width: 100%;
            height: 100%;
            border: 1px solid #ddd;
            background: #f9f9f9;
        }
        .node rect {
            fill: #4CAF50;
            stroke: #388E3C;
            stroke-width: 1.5px;
        }
        .link {
            stroke: #999;
            stroke-width: 1px;
            fill: none;
        }
        .text {
            font-family: 'Roboto', sans-serif;
            font-size: 14px;
            fill: #333;
            font-weight: 500;
        }
        .highlighted rect {
            fill: #ffeb3b;
            stroke: #fbc02d;
            stroke-width: 2px;
        }
        .tooltip {
            position: absolute;
            background: #fff;
            padding: 5px;
            border: 1px solid #ccc;
            border-radius: 5px;
            pointer-events: none;
            opacity: 0;
            font-size: 12px;
        }
        .loading-spinner {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 20px;
            color: #4CAF50;
        }
        #footer {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: #fff;
            padding: 10px 20px;
            box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            text-align: center;
            font-size: 14px;
            color: #666;
        }
        
        #content-section {
            margin-top: 40px;
            padding: 20px;
            background: #f9f9f9;
            border-radius: 8px;
            box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1);
            font-family: 'Roboto', sans-serif;
        }

        #content-section h1 {
            font-size: 24px;
            color: #333;
            text-align: center;
        }

        #content-section p {
            font-size: 16px;
            line-height: 1.6;
            color: #555;
        }

        #content-section a {
            color: #007BFF;
            text-decoration: none;
        }

        #content-section a:hover {
            text-decoration: underline;
        }