@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f8fafc;
        }

        .bpp-blue { color: #1e3a8a; }
        .bg-bpp-blue { background-color: #1e3a8a; }
        
        #map { height: 450px; border-radius: 12px; z-index: 1; }
        
        .card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
            padding: 1.5rem;
            height: 100%;
        }

        .tab-btn {
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            border-bottom: 3px solid transparent;
            transition: all 0.3s;
        }

        .tab-btn.active {
            border-bottom-color: #1e3a8a;
            color: #1e3a8a;
        }

        .visualiser-svg {
            width: 100%;
            max-width: 500px;
            height: auto;
            filter: drop-shadow(0 10px 15px rgba(0,0,0,0.1));
        }

        .stress-hot { fill: #ef4444; stroke: #ef4444; transition: all 0.5s; }
        .stress-mid { fill: #f59e0b; stroke: #f59e0b; transition: all 0.5s; }
        .stress-cold { fill: #3b82f6; stroke: #3b82f6; transition: all 0.5s; }

        .threat-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            font-size: 12px;
            font-weight: bold;
            color: white;
            box-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        .map-number-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid white;
            border-radius: 50%;
            color: white;
            font-weight: bold;
            font-size: 14px;
            box-shadow: 0 0 10px rgba(0,0,0,0.3);
        }

        .contour-label {
            background: none;
            border: none;
            box-shadow: none;
            font-size: 10px;
            font-weight: 700;
            color: #94a3b8;
            text-shadow: 1px 1px 0px white;
        }

        /* Custom marker for intermediate nodes */
        .node-marker {
            background: #1e3a8a;
            border: 2px solid white;
            border-radius: 50%;
        }