.power-bar-container {
            width: 100%;
            height: 20px;
            background: #e9ecef;
            border-radius: 20px;
            margin: 0.8rem 0;
            overflow: hidden;
        }
        .power-bar-fill {
            height: 100%;
            width: 0%;
            background: linear-gradient(90deg, #2c7da0, #61a5c2);
            border-radius: 20px;
            transition: width 0.4s ease;
        }
        .legend { display: flex; justify-content: center; gap: 1.5rem; margin-top: 0.5rem; font-size: 0.8rem; }
        .legend-color { width: 16px; height: 16px; border-radius: 4px; display: inline-block; margin-right: 5px; }
        .mode-selector { margin-bottom: 1.5rem; } 
        .cost-estimate-box { background: #f8f9fa; border-radius: 12px; padding: 1rem; margin-top: 1rem; border: 1px solid #e2e6ea; }
        .pf-note { background: #e9ecef; border-radius: 8px; padding: 0.75rem; font-size: 0.9rem; border-left: 3px solid #ffc107; margin-top: 0.5rem; }