.sound-widget {
    margin-top: 1.2rem;
    padding: 1.4rem;
    border: 1px solid #dbeafe;
    border-radius: 24px;
    background: linear-gradient(135deg, #f8fbff, #eef6ff);
    box-shadow: 0 14px 35px rgba(15, 23, 42, 0.08);
}

.sound-widget-controls,
.sound-size-controls,
.speed-control-row {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 0.9rem;
    margin-bottom: 1.2rem;
}

.sound-control-field {
    display: flex;
    flex-direction: column;
    min-width: 180px;
    flex: 1;
}

.sound-control-field label,
.speed-control-row label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 800;
    color: #1e293b;
}

.sound-control-field input,
.sound-control-field select,
.sound-widget-controls select {
    padding: 0.7rem 0.85rem;
    border: 1px solid #cbd5e1;
    border-radius: 14px;
    background: #ffffff;
    font-size: 1rem;
}

.sound-widget-controls button {
    border: 0;
    border-radius: 999px;
    padding: 0.75rem 1rem;
    font-weight: 800;
    cursor: pointer;
    background: #2563eb;
    color: #ffffff;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.22);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sound-widget-controls button:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 22px rgba(37, 99, 235, 0.28);
}

.speed-control-row {
    align-items: center;
}

.speed-control-row input[type="range"] {
    width: 240px;
}

#soundSpeedLabel {
    font-weight: 900;
    color: #1d4ed8;
}

.sampling-canvas-wrap {
    width: 100%;
    overflow-x: auto;
    padding: 0.5rem;
    border-radius: 20px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
}

#soundSamplingCanvas {
    width: 100%;
    max-width: 900px;
    min-width: 640px;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 16px;
    background: #f8fafc;
}

.sound-widget-note {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 18px;
    background: #fff7ed;
    border: 1px solid #fed7aa;
    color: #7c2d12;
    font-weight: 700;
}

.nyquist-result-grid,
.sound-size-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
    gap: 0.9rem;
    margin: 1rem 0;
}

.nyquist-card,
.sound-size-card {
    padding: 1rem;
    border-radius: 18px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.sound-label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.78rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
}

.nyquist-card strong,
.sound-size-card strong {
    font-size: 1.18rem;
    color: #0f172a;
    word-break: break-word;
}

.result-card.good {
    border-color: #86efac;
    background: #f0fdf4;
}

.result-card.good strong {
    color: #166534;
}

.result-card.bad {
    border-color: #fecaca;
    background: #fef2f2;
}

.result-card.bad strong {
    color: #991b1b;
}

.nyquist-bar-wrap {
    margin-top: 1rem;
    padding: 1.2rem 0.6rem 2.2rem;
}

.nyquist-bar-track {
    position: relative;
    height: 14px;
    border-radius: 999px;
    background: linear-gradient(90deg, #fecaca 0%, #fecaca 50%, #bbf7d0 50%, #bbf7d0 100%);
    border: 1px solid #e2e8f0;
}

.nyquist-marker {
    position: absolute;
    top: 20px;
    transform: translateX(-50%);
    padding: 0.3rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 900;
    white-space: nowrap;
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.14);
}

.required-marker {
    background: #1d4ed8;
    color: #ffffff;
}

.chosen-marker {
    background: #0f172a;
    color: #ffffff;
}

.sound-calculation-steps {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 18px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

.sound-calculation-step {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    padding: 0.75rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.sound-calculation-step:last-child {
    border-bottom: 0;
}

.sound-step-badge {
    flex: 0 0 auto;
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    background: #dbeafe;
    color: #1d4ed8;
    font-weight: 900;
}

.sound-step-text strong {
    color: #0f172a;
}

.sound-step-text code {
    background: #e2e8f0;
    padding: 0.12rem 0.35rem;
    border-radius: 6px;
}

.formula-line {
    padding: 0.8rem 1rem;
    border-radius: 16px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
}

.warning-box {
    margin: 1rem 0;
    padding: 1rem;
    border-radius: 18px;
    background: #fff7ed;
    border: 1px solid #fed7aa;
    color: #7c2d12;
}

@media (max-width: 760px) {
    .sound-widget-controls,
    .sound-size-controls,
    .speed-control-row {
        flex-direction: column;
        align-items: stretch;
    }

    .speed-control-row input[type="range"] {
        width: 100%;
    }
}