.legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 0.5rem;
            font-size: 0.8rem;
        }.form-label{font-size:0.9rem}
        .legend-color {
            width: 16px;
            height: 16px;
            display: inline-block;
            border-radius: 2px;
        }
        .canvas-container {
            background: #fefefe;
            border-radius: 12px;
            padding: 10px;
            margin-top: 1rem;
            text-align: center;
        }
        .pipe-canvas {
            width: 100%;
            height: auto;
            background: #f0f4f8;
            border-radius: 12px;
            border: 1px solid #dce4ec;
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .badge-regime {
            font-size: 0.8rem;
        }
        hr {
            opacity: 0.4;
        }
        .fluid-props {
            background: #f8f9fc;
            padding: 10px;
            border-radius: 8px;
            margin: 10px 0;
        }
        .validation-badge {
            background-color: #e8f5e9;
            border-left: 4px solid #2e7d32;
            font-size: 0.9rem;
        }
        .sanity-checklist {
            background-color: #e8f4fd;
            border-left: 4px solid #1e88e5;
            border-radius: 4px;
            padding: 1.2rem;
            margin: 1.5rem 0;
        }
        .sanity-checklist ul {
            list-style: none;
            padding-left: 0;
        }
        .sanity-checklist li {
            padding: 0.4rem 0 0.4rem 2rem;
            position: relative;
        }
        .sanity-checklist li:before {
            content: "✅";
            position: absolute;
            left: 0;
        }
        .calculation-snippet {
            font-family: 'Courier New', monospace;
            background: #f5f5f5;
            padding: 1rem;
            border-radius: 6px;
            font-size: 0.9rem;
            margin: 1rem 0;
            overflow-x: auto;
        }
        .step-subnote {
            font-style: italic;
            color: #666;
            font-size: 0.9rem;
            margin-top: 0.3rem;
            padding-left: 1rem;
            border-left: 2px solid #ddd;
        }