.metric-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1rem;
            text-align: center;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
            transition: all 0.2s;
        }
        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: #0d6efd;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #2c3e66;
        }
        .badge-benchmark {
            background-color: #e9ecef;
            color: #2c3e66;
            font-weight: 500;
            padding: 0.4rem 0.8rem;
            border-radius: 40px;
        }
        .insight-box {
            background: #eef2ff;
            border-left: 5px solid #0d6efd;
            padding: 1rem 1.2rem;
            border-radius: 12px;
            margin: 1.2rem 0;
        }
        canvas#roasChart {
            width: 100%;
            height: auto;
            background: #fff;
            border-radius: 16px;
        }
        .roas-gauge {
            background: #e9ecef;
            border-radius: 12px;
            height: 12px;
            width: 100%;
            overflow: hidden;
        }
        .gauge-fill {
            background: #0d6efd;
            width: 0%;
            height: 100%;
            border-radius: 12px;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 0.5rem;
            font-size: 0.8rem;
        }
        .legend-color {
            width: 18px;
            height: 18px;
            display: inline-block;
            border-radius: 4px;
            margin-right: 6px;
            vertical-align: middle;
        }