.input-group-custom {
            margin-bottom: 1rem;
        }
        .deep-dive {
            margin: 1.8rem 0;
        }
        .deep-dive p {
            text-align: justify;
        }
        .unit-note {
            font-size: 0.9rem;
            color: #6c757d;
        }
        .coord-input {
            margin-bottom: 0.5rem;
        }
        .chart-canvas {
            width: 100%;
            height: auto;
            background-color: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 8px;
            margin-top: 1.5rem;
            display: block;
        }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 0.5rem 0;
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            display: inline-block;
        }
        .legend-color.green { background-color: #28a745; }
        .legend-color.orange { background-color: #fd7e14; }
        .legend-color.blue { background-color: #0d6efd; }
        .legend-color.red { background-color: #dc3545; }
        .legend-color.purple { background-color: #6f42c1; }
        .fuel-rating {
            display: inline-block;
            padding: 0.25rem 1rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 1.1rem;
        }
        .fuel-rating.excellent { background: #d4edda; color: #155724; }
        .fuel-rating.good { background: #cce5ff; color: #004085; }
        .fuel-rating.average { background: #fff3cd; color: #856404; }
        .fuel-rating.poor { background: #f8d7da; color: #721c24; }
        .stat-card {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 1rem;
            text-align: center;
            height: 100%;
            border: 1px solid #e9ecef;
        }
        .stat-card .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: #6c757d;
        }
        .comparison-bar {
            height: 24px;
            background: #e9ecef;
            border-radius: 12px;
            overflow: hidden;
            margin: 4px 0;
        }
        .comparison-bar .fill {
            height: 100%;
            border-radius: 12px;
            transition: width 0.6s ease;
        }
        .efficiency-tip {
            background: #f0f8f0;
            border-left: 4px solid #28a745;
            padding: 0.75rem 1rem;
            border-radius: 0 4px 4px 0;
            margin: 0.5rem 0;
        }
        .efficiency-tip i {
            color: #28a745;
        }