.ro-sm-wrapper {
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    box-shadow: 0 12px 32px rgba(0,0,0,0.25);
    max-width: 650px;
    margin: 20px auto;
    box-sizing: border-box;
}

.ro-sm-title {
    margin: 0 0 6px 0 !important;
    font-size: 26px !important;
    font-weight: 700 !important;
}

.ro-sm-subtitle {
    opacity: 0.75;
    margin: 0 0 24px 0 !important;
    font-size: 14px !important;
}

.ro-sm-actions {
    margin-bottom: 20px;
}

#ro-audio-start-btn {
    color: #000000;
    border: none;
    padding: 12px 26px;
    font-size: 14px;
    font-weight: 700;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

#ro-audio-start-btn:hover { transform: translateY(-1px); opacity: 0.95; }
#ro-audio-start-btn:active { transform: translateY(1px); }

.ro-sm-display-grid {
    display: grid;
    gap: 15px;
    align-items: stretch;
    margin: 0 auto;
}

.ro-sm-display-grid.has-db-meter {
    grid-template-columns: 50px 1fr;
}

.ro-sm-display-grid.canvas-only {
    grid-template-columns: 1fr;
}

.ro-sm-db-meter-container {
    background: rgba(0,0,0,0.4);
    border-radius: 6px;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column-reverse;
    border: 1px solid rgba(255,255,255,0.1);
}

#ro-sm-db-fill {
    width: 100%;
    height: 0%;
    transition: height 0.08s ease-out;
    opacity: 0.85;
}

#ro-sm-db-label {
    position: absolute;
    bottom: 6px;
    left: 0;
    width: 100%;
    font-size: 10px;
    font-weight: bold;
    text-shadow: 0 1px 3px #000;
    color: #fff;
    text-align: center;
}

#ro-sound-canvas {
    width: 100%;
    height: 180px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 8px;
    display: block;
}

.ro-sm-credit {
    margin-top: 18px;
    font-size: 11px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.ro-sm-credit a { text-decoration: none !important; opacity: 0.5; transition: opacity 0.2s ease; }
.ro-sm-credit a:hover { opacity: 0.9; }