/* ===========================
   WSOLA Visualizer Styles
   =========================== */

.wsola-visualizer {
    background: var(--color-bg-card, #1a1a1a);
    border: 1px solid var(--color-border, #333);
    border-radius: var(--border-radius-md, 12px);
    padding: 24px;
    margin: 32px 0;
}

/* Controls Section */
.wsola-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.wsola-control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.wsola-control-group label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 8px;
}

.control-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary, #fff);
}

.control-value {
    font-size: 0.85rem;
    color: var(--color-text-secondary, #888);
    font-family: 'SF Mono', 'Consolas', monospace;
}

/* Slider Styling */
.wsola-control-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: #404040;
    border: 1px solid #555;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.wsola-control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--color-accent-primary, #4A90D9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s ease, border-color 0.15s ease;
}

.wsola-control-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    border-color: rgba(255, 255, 255, 0.5);
}

.wsola-control-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--color-accent-primary, #4A90D9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.wsola-control-group input[type="range"]::-moz-range-thumb:hover {
    border-color: rgba(255, 255, 255, 0.5);
}

/* Select Dropdown Styling */
.wsola-control-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--color-bg-secondary, #2a2a2a);
    border: 1px solid var(--color-border, #444);
    border-radius: 6px;
    color: var(--color-text-primary, #fff);
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.wsola-control-group select:hover {
    border-color: var(--color-accent-primary, #4A90D9);
}

.wsola-control-group select:focus {
    outline: none;
    border-color: var(--color-accent-primary, #4A90D9);
    box-shadow: 0 0 0 2px rgba(74, 144, 217, 0.2);
}

.wsola-control-group select option {
    background: var(--color-bg-secondary, #2a2a2a);
    color: var(--color-text-primary, #fff);
    padding: 8px;
}

/* Compact Controls Row (for stretch visualizer) */
.wsola-controls-compact {
    display: flex;
    gap: 24px;
    align-items: flex-end;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.compact-control {
    flex: 1;
    min-width: 140px;
}

.compact-control:last-child {
    padding-right: 8px; /* Prevent overflow at right edge */
}

.compact-control label {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-secondary, #888);
    margin-bottom: 6px;
}

.compact-control select {
    width: 100%;
    padding: 8px 10px;
    background: var(--color-bg-secondary, #2a2a2a);
    border: 1px solid var(--color-border, #444);
    border-radius: 6px;
    color: var(--color-text-primary, #fff);
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}

.compact-control select:hover {
    border-color: var(--color-accent-primary, #4A90D9);
}

.compact-slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.compact-slider-row input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 6px;
    background: #404040;
    border: 1px solid #555;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.compact-slider-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-accent-primary, #4A90D9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.compact-slider-row input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--color-accent-primary, #4A90D9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.compact-value {
    font-size: 0.8rem;
    color: var(--color-text-primary, #fff);
    font-family: 'SF Mono', 'Consolas', monospace;
    min-width: 70px;
    text-align: right;
    line-height: 1.3;
}

.compact-value-secondary {
    font-size: 0.75rem;
    color: var(--color-text-secondary, #888);
}

/* Canvas-overlaid Input Row */
.stretch-canvas-container {
    position: relative;
}

.canvas-input-row {
    position: absolute;
    top: 4px;
    left: 40px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10;
}

.canvas-row-label {
    font-size: 12px;
    font-weight: 400;
    color: #888;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}

.canvas-row-sublabel {
    font-size: 11px;
    color: #aaa;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    margin-left: 8px;
}

.canvas-input-row input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100px;
    height: 6px;
    background: #404040;
    border: 1px solid #555;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.canvas-input-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--color-accent-primary, #4A90D9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
}

.canvas-input-row input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--color-accent-primary, #4A90D9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
}

.canvas-input-row span:not(.canvas-row-label) {
    font-size: 0.75rem;
    color: var(--color-text-secondary, #aaa);
    font-family: 'SF Mono', 'Consolas', monospace;
    white-space: nowrap;
}

/* Display Mode Toggle */
.wsola-display-mode {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding: 8px 12px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: 6px;
}

.mode-toggle {
    display: flex;
    gap: 4px;
    background: var(--color-bg-card, #2a2a2a);
    border-radius: 6px;
    padding: 3px;
}

.mode-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--color-text-secondary, #888);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.mode-btn:hover {
    color: var(--color-text-primary, #fff);
}

.mode-btn.active {
    background: var(--color-accent-primary, #4A90D9);
    color: #fff;
}

.time-window-display {
    display: flex;
    align-items: center;
    gap: 8px;
}

.time-window-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary, #888);
}

.time-window-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary, #fff);
    font-family: 'SF Mono', 'Consolas', monospace;
}

@media (max-width: 768px) {
    .wsola-controls-compact {
        flex-direction: column;
        gap: 12px;
    }

    .compact-control {
        min-width: auto;
        width: 100%;
    }

    .canvas-input-row {
        left: 16px;
        gap: 8px;
    }

    .canvas-input-row input[type="range"] {
        width: 80px;
    }

    .wsola-display-mode {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
}

/* Derived Values Display */
.wsola-derived-values {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 16px;
    background: var(--color-bg-secondary, #222);
    border-radius: var(--border-radius-sm, 8px);
    margin-bottom: 24px;
}

.derived-value {
    flex: 1;
    min-width: 150px;
    text-align: center;
    padding: 12px;
}

.derived-label {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-secondary, #888);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.derived-number {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary, #fff);
    font-family: 'SF Mono', 'Consolas', monospace;
    white-space: nowrap;
}

.derived-number.warning {
    color: #D94A4A;
}

.derived-note {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-secondary, #666);
    margin-top: 4px;
    font-style: italic;
}

/* Canvas Container */
.wsola-canvas-container {
    width: 100%;
    background: var(--color-bg-secondary, #111);
    border-radius: var(--border-radius-sm, 8px);
    overflow: hidden;
}

.wsola-canvas-container canvas {
    display: block;
    width: 100%;
}

/* Canvas Play Buttons (overlay) */
.resampling-canvas-container {
    position: relative;
}

.canvas-play-btn {
    position: absolute;
    left: 12px;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: rgba(74, 144, 217, 0.9);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: background 0.15s ease, transform 0.1s ease;
    z-index: 10;
}

.canvas-play-btn:hover {
    background: rgba(74, 144, 217, 1);
    transform: scale(1.1);
}

.canvas-play-btn.playing {
    background: rgba(217, 74, 74, 0.9);
}

.canvas-play-btn .play-icon {
    margin-left: 2px; /* Visual centering for play triangle */
}

/* Legend */
.wsola-legend {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 16px;
    padding: 12px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--color-text-secondary, #888);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.legend-ellipsis {
    color: var(--color-text-secondary, #666);
    font-size: 1.2rem;
}

/* Equation Display */
.wsola-equation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 20px;
    padding: 16px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: var(--border-radius-sm, 8px);
    border-left: 3px solid var(--color-accent-primary, #4A90D9);
}

.wsola-equation code {
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 1.1rem;
    color: var(--color-text-primary, #fff);
    background: transparent;
    padding: 0;
}

.equation-note {
    color: var(--color-text-secondary, #666);
    font-size: 1.2rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .wsola-visualizer {
        padding: 16px;
        margin: 24px -16px;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .wsola-controls {
        grid-template-columns: 1fr;
    }

    .wsola-derived-values {
        flex-direction: column;
        gap: 8px;
    }

    .derived-value {
        min-width: auto;
        padding: 8px;
    }

    .derived-number {
        font-size: 1.1rem;
    }

    .wsola-legend {
        flex-wrap: wrap;
        gap: 12px;
    }

    .wsola-equation {
        flex-direction: column;
        gap: 8px;
    }

    .wsola-equation code {
        font-size: 1rem;
    }
}

/* ===========================
   Resampling Visualizer Styles
   =========================== */

.resampling-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.info-panel {
    background: var(--color-bg-secondary, #222);
    border-radius: var(--border-radius-sm, 8px);
    padding: 20px;
    text-align: center;
    min-width: 160px;
    flex: 1;
    max-width: 200px;
}

.info-panel.original-panel {
    border: 2px solid #4A90D9;
}

.info-panel.result-panel {
    border: 2px solid #D9A64A;
}

.panel-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary, #888);
    margin-bottom: 8px;
}

.panel-freq {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary, #fff);
    font-family: 'SF Mono', 'Consolas', monospace;
}

.panel-note {
    font-size: 1.1rem;
    color: var(--color-text-secondary, #aaa);
    margin-bottom: 12px;
}

.info-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--color-text-secondary, #666);
    width: 100px;
    flex-shrink: 0;
}

.info-arrow .arrow-symbol {
    font-size: 1.5rem;
}

#arrowLabel {
    font-size: 0.8rem;
    white-space: nowrap;
    text-align: center;
}

/* Play Button */
.play-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--color-bg-card, #333);
    border: 1px solid var(--color-border, #444);
    border-radius: 20px;
    color: var(--color-text-primary, #fff);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.play-btn:hover {
    background: var(--color-bg-secondary, #444);
    border-color: var(--color-accent-primary, #4A90D9);
}

.play-btn.playing {
    background: var(--color-accent-primary, #4A90D9);
    border-color: var(--color-accent-primary, #4A90D9);
}

.play-btn .play-icon {
    font-size: 0.9rem;
}

/* Explanation Text */
.resampling-explanation {
    margin-top: 16px;
    padding: 16px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: var(--border-radius-sm, 8px);
    border-left: 3px solid #D9A64A;
    min-height: 81px;
    display: flex;
    align-items: center;
}

/* Responsive min-height to accommodate text wrapping at narrower widths */
@media (max-width: 600px) {
    .resampling-explanation {
        min-height: 110px;
    }
}

@media (max-width: 450px) {
    .resampling-explanation {
        min-height: 140px;
    }
}

.resampling-explanation p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary, #aaa);
}

.resampling-explanation strong {
    color: var(--color-text-primary, #fff);
}

/* OLA Canvas with Phase Display */
.ola-canvas-container {
    position: relative;
}

.ola-phase-display {
    position: absolute;
    top: 8px;
    right: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 10;
}

.ola-phase-label-text {
    font-size: 11px;
    color: #888;
}

.ola-phase-value {
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    font-family: 'SF Mono', 'Consolas', monospace;
}

.ola-phase-value.warning {
    color: #ff6666;
}

/* OLA Audio Section */
.ola-audio-section {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    padding: 16px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: var(--border-radius-sm, 8px);
}

.ola-audio-section .audio-hint {
    font-size: 0.85rem;
    color: var(--color-text-secondary, #888);
}

.ola-phase-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent-primary, #4A90D9);
    min-width: 200px;
}

.ola-phase-label:empty {
    display: none;
}

/* Frame Adjustment Visualizer */
.adjustment-control {
    background: var(--color-bg-secondary, #222);
    border-radius: var(--border-radius-sm, 8px);
    padding: 16px 20px;
    margin-bottom: 20px;
    border: 2px solid var(--color-accent-primary, #4A90D9);
}

.adjustment-control label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 8px;
}

.adjustment-control input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: linear-gradient(to right,
        #D9A64A 0%,
        var(--color-bg-card, #333) 45%,
        var(--color-accent-primary, #4A90D9) 50%,
        var(--color-bg-card, #333) 55%,
        #D9A64A 100%);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

.adjustment-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    background: var(--color-accent-primary, #4A90D9);
    border-radius: 50%;
    cursor: grab;
    border: 3px solid #fff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.adjustment-control input[type="range"]::-webkit-slider-thumb:active {
    cursor: grabbing;
}

.adjustment-control input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: var(--color-accent-primary, #4A90D9);
    border-radius: 50%;
    cursor: grab;
    border: 3px solid #fff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.adjustment-hint {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--color-text-secondary, #888);
}

.adjustment-hint span:nth-child(2) {
    color: var(--color-accent-primary, #4A90D9);
    font-weight: 600;
}

.adjustment-explanation {
    margin-top: 16px;
    padding: 16px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: var(--border-radius-sm, 8px);
    border-left: 3px solid var(--color-accent-primary, #4A90D9);
}

.adjustment-explanation p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary, #aaa);
}

.adjustment-explanation strong {
    color: var(--color-accent-primary, #4A90D9);
}

.derived-number.good {
    color: #4AD98F;
}

/* Adjustment Visualizer Compact Layout */
.adj-controls-compact {
    display: grid;
    grid-template-columns: 1.3fr min-content 1fr min-content;
    gap: 12px;
    align-items: start;
}

/* Responsive: wrap to 2 columns on medium screens */
@media (max-width: 700px) {
    .adj-controls-compact {
        grid-template-columns: 1fr auto;
    }

    .adj-controls-compact .compact-control:nth-child(4) {
        text-align: left;
    }
}

/* Responsive: narrow screens - sliders full width, dropdowns side by side */
@media (max-width: 450px) {
    .adj-controls-compact {
        grid-template-columns: 1fr 1fr;
    }

    /* Sliders span full width */
    .adj-controls-compact .compact-control:nth-child(1),
    .adj-controls-compact .compact-control:nth-child(3) {
        grid-column: 1 / -1;
    }

    /* Reorder: Tolerance (2) and Frame Size (4) on same row between the sliders */
    .adj-controls-compact .compact-control:nth-child(1) { order: 1; }
    .adj-controls-compact .compact-control:nth-child(2) { order: 2; }
    .adj-controls-compact .compact-control:nth-child(4) { order: 3; }
    .adj-controls-compact .compact-control:nth-child(3) { order: 4; }
}

/* Right-align the Frame Size column */
.adj-controls-compact .compact-control:nth-child(4) {
    text-align: right;
}

.adj-controls-compact .compact-control:nth-child(4) select {
    text-align: left;
}

.adj-controls-compact .compact-control select {
    width: auto !important;
    min-width: 0;
}

.adj-controls-compact .compact-slider-row {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.adj-controls-compact .compact-slider-row input[type="range"] {
    flex: 1;
    min-width: 80px;
}

.adj-controls-compact .compact-value {
    min-width: 50px;
    text-align: left;
    flex-shrink: 0;
}

.adj-control-delta .compact-slider-row input[type="range"] {
    background: linear-gradient(to right,
        #D9A64A 0%,
        var(--color-bg-card, #333) 45%,
        var(--color-accent-primary, #4A90D9) 50%,
        var(--color-bg-card, #333) 55%,
        #D9A64A 100%);
}

.adj-canvas-container {
    position: relative;
}

.adj-phase-display {
    position: absolute;
    top: 8px;
    right: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 10;
}

.adj-phase-label {
    font-size: 11px;
    color: #888;
}

.adj-phase-value {
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    font-family: 'SF Mono', 'Consolas', monospace;
}

.adj-phase-value.warning {
    color: #ff6666;
}

.adj-phase-value.good {
    color: #4AD98F;
}

.adj-explanation-overlay {
    position: absolute;
    top: 65%;
    right: 40px;
    max-width: 200px;
    padding: 8px 12px;
    background: transparent;
    z-index: 10;
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--color-text-secondary, #aaa);
}

/* Transient Visualizer */
.trans-controls-row {
    position: relative;
    min-height: 60px;
    margin-bottom: 8px;
}

.trans-controls-compact {
    display: flex;
    gap: 16px;
    align-items: start;
}

.trans-stretch-control {
    flex: 0 0 auto;
    width: 200px;
}

.trans-stretch-control .compact-slider-row input[type="range"] {
    max-width: 120px;
}

.trans-controls-compact .compact-control select {
    width: auto !important;
}

.trans-explanation-overlay {
    position: absolute;
    top: 0;
    right: 0;
    max-width: 55%;
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--color-text-secondary, #aaa);
    text-align: right;
}

.trans-canvas-container {
    position: relative;
}

.trans-coverage-display {
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 11px;
    color: #888;
    z-index: 10;
}

.trans-coverage-display .warning {
    color: #ff4444;
    font-weight: 600;
}

.transient-explanation {
    margin-top: 16px;
    padding: 16px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: var(--border-radius-sm, 8px);
    border-left: 3px solid #ff4444;
}

.transient-explanation p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary, #aaa);
}

/* OLA Explanation Text */
.ola-explanation-overlay {
    position: absolute;
    top: 65%;
    right: 40px;
    max-width: 200px;
    padding: 8px 12px;
    background: transparent;
    z-index: 10;
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--color-text-secondary, #aaa);
}

/* Audio Sample Section */
.audio-sample-section {
    margin-top: 24px;
    padding: 20px;
    background: var(--color-bg-secondary, #222);
    border-radius: var(--border-radius-sm, 8px);
    border: 1px solid var(--color-border, #333);
    min-height: 220px;
}

.audio-sample-section h4 {
    margin: 0 0 8px 0;
    font-size: 1rem;
    color: var(--color-text-primary, #fff);
}

.audio-sample-section .sample-description {
    margin: 0 0 16px 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary, #aaa);
}

.sample-player-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sample-play-btn {
    width: 48px;
    height: 48px;
    min-width: 48px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.sample-play-btn .play-icon {
    margin: 0;
}

.sample-stretch-control {
    flex: 1;
    max-width: 400px;
    margin-bottom: 0;
}

.audio-sample-section .sample-note {
    margin: 12px 0 0 0;
    font-size: 0.85rem;
    color: var(--color-text-secondary, #888);
    font-style: italic;
}

/* Responsive for resampling visualizer */
@media (max-width: 768px) {
    .resampling-info {
        flex-direction: column;
        gap: 12px;
    }

    .info-panel {
        max-width: none;
        width: 100%;
    }

    .info-arrow {
        flex-direction: row;
        gap: 12px;
    }

    .info-arrow .arrow-symbol {
        transform: rotate(90deg);
    }

    .panel-freq {
        font-size: 1.25rem;
    }
}

/* ===========================
   Window Size Visualizer Styles
   =========================== */

/* Window Size Button Group */
.window-size-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.window-size-btn {
    flex: 1;
    min-width: 120px;
    padding: 10px 12px;
    background: var(--color-bg-secondary, #2a2a2a);
    border: 2px solid var(--color-border, #444);
    border-radius: 8px;
    color: var(--color-text-primary, #fff);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: center;
}

.window-size-btn:hover {
    border-color: var(--color-accent-primary, #4A90D9);
    background: rgba(74, 144, 217, 0.1);
}

.window-size-btn.active {
    background: var(--color-accent-primary, #4A90D9);
    border-color: var(--color-accent-primary, #4A90D9);
    color: #fff;
}

.window-size-btn[data-quality="poor"]:not(.active) {
    border-color: rgba(255, 68, 68, 0.4);
}

.window-size-btn[data-quality="marginal"]:not(.active) {
    border-color: rgba(255, 170, 0, 0.4);
}

.window-size-btn[data-quality="good"]:not(.active) {
    border-color: rgba(102, 255, 102, 0.4);
}

/* Fixed Parameters Display */
.fixed-params {
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.fixed-param {
    display: flex;
    gap: 6px;
    align-items: baseline;
}

.fixed-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary, #888);
}

.fixed-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary, #fff);
    font-family: 'SF Mono', 'Consolas', monospace;
}

/* Correlation Quality Indicator */
.correlation-indicator {
    padding: 16px 20px;
    margin-bottom: 20px;
    border-radius: var(--border-radius-sm, 8px);
    background: var(--color-bg-secondary, #1a1a1a);
    border-left: 4px solid var(--color-border, #444);
}

.correlation-indicator.good {
    border-left-color: #66ff66;
    background: rgba(102, 255, 102, 0.05);
}

.correlation-indicator.marginal {
    border-left-color: #ffaa00;
    background: rgba(255, 170, 0, 0.05);
}

.correlation-indicator.poor {
    border-left-color: #ff6666;
    background: rgba(255, 102, 102, 0.05);
}

.correlation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.correlation-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary, #fff);
}

.correlation-status {
    font-size: 1rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Consolas', monospace;
}

.correlation-indicator.good .correlation-status {
    color: #66ff66;
}

.correlation-indicator.marginal .correlation-status {
    color: #ffaa00;
}

.correlation-indicator.poor .correlation-status {
    color: #ff6666;
}

.correlation-explanation {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--color-text-secondary, #aaa);
}

/* Correlation Plot Section */
.correlation-plot-section {
    margin-bottom: 20px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: var(--border-radius-sm, 8px);
    overflow: hidden;
}

.correlation-plot-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    flex-wrap: wrap;
    gap: 8px;
}

.correlation-plot-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary, #fff);
}

.correlation-plot-subtitle {
    font-size: 0.8rem;
    color: var(--color-text-secondary, #888);
}

.correlation-plot-container {
    width: 100%;
}

.correlation-plot-container canvas {
    display: block;
    width: 100%;
}

.correlation-plot-insight {
    padding: 12px 16px;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--color-text-secondary, #aaa);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.correlation-plot-insight strong {
    color: var(--color-text-primary, #fff);
}

.correlation-plot-insight.good {
    border-left: 3px solid #66ff66;
    background: rgba(102, 255, 102, 0.05);
}

.correlation-plot-insight.marginal {
    border-left: 3px solid #ffaa00;
    background: rgba(255, 170, 0, 0.05);
}

.correlation-plot-insight.poor {
    border-left: 3px solid #ff6666;
    background: rgba(255, 102, 102, 0.05);
}

/* Window Size Insight Box */
.window-size-insight {
    margin-top: 16px;
    padding: 16px;
    background: var(--color-bg-secondary, #1a1a1a);
    border-radius: var(--border-radius-sm, 8px);
    border-left: 3px solid var(--color-accent-primary, #4A90D9);
}

.window-size-insight p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary, #aaa);
}

.window-size-insight strong {
    color: var(--color-text-primary, #fff);
}

/* Primary Control Highlight */
.window-size-primary {
    grid-column: 1 / -1;
}

@media (min-width: 769px) {
    .window-size-primary {
        grid-column: span 2;
    }
}

/* Responsive adjustments for window size visualizer */
@media (max-width: 768px) {
    .window-size-buttons {
        flex-direction: column;
    }

    .window-size-btn {
        min-width: auto;
    }

    .fixed-params {
        justify-content: center;
        gap: 12px;
    }

    .correlation-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}

/* ===========================
   Collapsible Math Sections
   =========================== */

.math-details {
    margin-top: 20px;
    border: 1px solid var(--color-border, #333);
    border-radius: var(--border-radius-sm, 8px);
    background: var(--color-bg-card, #1a1a1a);
    overflow: hidden;
}

.math-details summary {
    padding: 14px 20px;
    background: var(--color-bg-secondary, #222);
    color: var(--color-text-primary, #fff);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    list-style: none;
    transition: background 0.15s ease;
}

.math-details summary::-webkit-details-marker {
    display: none;
}

.math-details summary::before {
    content: "▶";
    font-size: 0.7rem;
    color: var(--color-accent-primary, #4A90D9);
    transition: transform 0.2s ease;
}

.math-details[open] summary::before {
    transform: rotate(90deg);
}

.math-details summary:hover {
    background: var(--color-bg-card, #2a2a2a);
}

.math-details-content {
    padding: 20px;
    border-top: 1px solid var(--color-border, #333);
}

.math-details-content p {
    margin: 0 0 12px 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary, #aaa);
}

.math-details-content p:last-child {
    margin-bottom: 0;
}

.math-details-content ul {
    margin: 12px 0;
    padding-left: 24px;
}

.math-details-content li {
    margin-bottom: 8px;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--color-text-secondary, #aaa);
}

.math-details-content li:last-child {
    margin-bottom: 0;
}

.math-details-content strong {
    color: var(--color-text-primary, #fff);
}

.math-equation {
    margin: 16px 0;
    padding: 12px 16px;
    background: var(--color-bg-secondary, #111);
    border-radius: 6px;
    border-left: 3px solid var(--color-accent-primary, #4A90D9);
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 1rem;
    color: var(--color-text-primary, #fff);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .math-details summary {
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    .math-details-content {
        padding: 16px;
    }

    .math-equation {
        font-size: 0.9rem;
        padding: 10px 12px;
    }
}

/* Dark theme compatibility (already dark by default, but ensure it works) */
@media (prefers-color-scheme: light) {
    .wsola-visualizer {
        /* Keep dark theme for visualization clarity */
        background: #1a1a1a;
        color: #fff;
    }
}