.result-highlight {
            font-size: 2rem;
            font-weight: 700;
            color: #2c3e66;
        }
        .cost-card {
            background: #f8fafc;
            border-radius: 1rem;
            padding: 1rem;
            text-align: center;
            transition: all 0.2s;
            border: 1px solid #e2e8f0;
        }
        .cost-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
        }
        .unit-badge {
            font-size: 0.8rem;
            background: #e9ecef;
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
        }
        .insight-box {
            background: #eef2ff;
            border-left: 5px solid #0d6efd;
            padding: 1rem;
            border-radius: 10px;
            margin: 1.2rem 0;
        }
        .preset-badge {
            background-color: #e9ecef;
            border-radius: 30px;
            padding: 0.3rem 0.9rem;
            font-size: 0.8rem;
            cursor: pointer;
            transition: all 0.2s;
            display: inline-block;
            margin: 0.2rem;
        }
        .preset-badge:hover {
            background-color: #cfe2ff;
            transform: scale(1.02);
        }
        .emission-badge {
            background: #d1e7dd;
            color: #0f5132;
            border-radius: 30px;
            padding: 0.25rem 1rem;
            display: inline-block;
        }