.sound-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.controls-row {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-start;
    align-items: center;
}

.wave-control,
.frequency-control,
.volume-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.wave-control label,
.frequency-control label,
.volume-control label {
    min-width: 120px;
}

.wave-control select {
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    width: 200px;
}

.frequency-control input[type="range"],
.volume-control input[type="range"] {
    flex: 1;
    max-width: 200px;
}

.info-box {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.info-box h3 {
    margin: 0 0 1rem;
    color: var(--heading-color);
}

.info-box p {
    margin: 0.5rem 0;
    color: var(--text-color);
}

.note {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Estilização dos controles de áudio */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Feedback visual para botões */
button.cta:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button.cta.primary {
    background: var(--primary-color);
    color: white;
}

/* Feedback visual para controles desabilitados */
select:disabled,
input[type="range"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}