.gauge-container {
            background: #f9f9fc;
            border-radius: 20px;
            padding: 0.5rem;
            margin: 0.5rem 0;
            text-align: center;
        }
        canvas#currentGauge {
            width: 100%;
            max-width: 340px;
            height: auto;
            background: transparent;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin: 0.8rem 0;
        }
        .badge-pf {
            background: #e9ecef;
            padding: 0.3rem 0.8rem;
            border-radius: 30px;
            font-size: 0.8rem;
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .voltage-hint {
            font-size: 0.75rem;
            color: #6c757d;
            margin-top: 0.25rem;
        }