.db-meter {
            font-family: 'Courier New', monospace;
            font-size: 3rem;
            font-weight: 700;
            line-height: 1.2;
        }
        .db-unit {
            font-size: 1.2rem;
            color: #6c757d;
        }
        .noise-level-indicator {
            width: 100%;
            height: 30px;
            background: linear-gradient(90deg, #2ecc71 0%, #f1c40f 50%, #e67e22 75%, #e74c3c 100%);
            border-radius: 15px;
            margin: 15px 0;
            position: relative;
        }
        .indicator-arrow {
            width: 6px;
            height: 40px;
            background-color: #333;
            position: absolute;
            top: -5px;
            transform: translateX(-50%);
            border-radius: 3px;
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .deep-dive {
            margin: 1.8rem 0;
        }
        .deep-dive p {
            text-align: justify;
        }
        .level-badge {
            display: inline-block;
            padding: 0.25rem 0.8rem;
            border-radius: 20px;
            font-weight: 600;
            color: white;
        }
        .level-quiet { background-color: #2ecc71; }
        .level-moderate { background-color: #f1c40f; color: #333; }
        .level-loud { background-color: #e67e22; }
        .level-danger { background-color: #e74c3c; }
        .sound-controls {
            background: #f5f5f5;
            padding: 1.5rem;
            border-radius: 12px;
            margin-bottom: 2rem;
        }
        .simulate-slider {
            width: 100%;
            margin-top: 10px;
        }
        .waveform-container {
            margin: 1.5rem 0;
            background: #1e1e2f;
            border-radius: 12px;
            padding: 1rem;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .waveform-canvas {
            width: 100%;
            height: 120px;
            display: block;
            background: #2d2d3a;
            border-radius: 8px;
        }
        .waveform-label {
            color: #eee;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            letter-spacing: 1px;
        }
        .calibration-slider-container {
            margin-top: 1rem;
            padding: 0.5rem;
            background: rgba(0,150,136,0.1);
            border-radius: 8px;
        }
        .calibration-value {
            font-weight: 600;
            color: #00796b;
            min-width: 3rem;
            display: inline-block;
        }
        .btn-reset-peak {
            margin-left: 0.5rem;
        }