/* ===========================================
   Stereo Mic Techniques Styles
   Project-specific styles for Stereo Mic Techniques
   =========================================== */

/* App container */
.mic-app {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
}

/* ===========================================
   App Grid:
   Row 1: Source (full width)
   Row 2: Technique | Polar Pattern | Parameters
   =========================================== */

.app-grid {
    display: grid;
    grid-template-columns: auto 1fr 1fr;
    grid-template-rows: auto 1fr;
    gap: var(--spacing-md);
}

/* Source card spans all 3 columns */
.app-grid .source-card {
    grid-column: 1 / -1;
    grid-row: 1;
}

/* Technique: left column, second row */
.app-grid .technique-card {
    grid-column: 1;
    grid-row: 2;
    align-self: stretch;
}

/* Polar: center column, second row */
.app-grid .visualization-card {
    grid-column: 2;
    grid-row: 2;
    align-self: stretch;
}

/* Parameters: right column, second row */
.app-grid .params-card {
    grid-column: 3;
    grid-row: 2;
    align-self: stretch;
}

/* Tablet: 2-column layout */
@media (max-width: 1100px) {
    .app-grid {
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto auto;
    }

    .app-grid .source-card {
        grid-column: 1 / -1;
        grid-row: 1;
    }

    .app-grid .technique-card {
        grid-column: 1;
        grid-row: 2 / 4;
        align-self: start;
    }

    .app-grid .visualization-card {
        grid-column: 2;
        grid-row: 2;
    }

    .app-grid .params-card {
        grid-column: 2;
        grid-row: 3;
    }

    .polar-canvas-container {
        max-width: 380px;
        margin: 0 auto;
    }
}

/* Small tablet / large phone: single column */
@media (max-width: 768px) {
    .app-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .app-grid .source-card,
    .app-grid .technique-card,
    .app-grid .visualization-card,
    .app-grid .params-card {
        grid-column: 1;
        grid-row: auto;
    }

    .polar-canvas-container {
        max-width: 350px;
        margin: 0 auto;
    }

    /* Technique buttons go horizontal */
    .technique-grid {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .technique-button {
        flex: 1 1 auto;
        min-width: 80px;
    }

    /* Source header stacks */
    .source-header-row {
        flex-wrap: wrap;
    }

    .source-header-row .gain-control {
        min-width: 200px;
    }
}

@media (max-width: 480px) {
    .polar-canvas-container {
        max-width: 300px;
    }

    .technique-button {
        min-width: 70px;
    }
}

/* ===========================================
   Source Card (compact)
   =========================================== */

.mic-app .source-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Title + Format + Gain all in one row */
.source-header-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.source-header-row .card-title {
    margin: 0;
    white-space: nowrap;
}

.source-header-row .gain-control {
    flex: 1;
    min-width: 120px;
}

/* Format selector */
.format-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.format-selector .control-label {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 0;
    white-space: nowrap;
}

.format-button-group {
    display: flex;
    gap: var(--spacing-xs);
}

.format-button {
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-control-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.format-button:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.format-button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.format-button.active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.format-button.active:hover {
    background: rgba(37, 99, 235, 0.2);
    border-color: var(--color-accent-hover);
}

[data-theme="dark"] .format-button.active {
    background: rgba(37, 99, 235, 0.35);
    border-color: #60a5fa;
    color: #93c5fd;
}

[data-theme="dark"] .format-button.active:hover {
    background: rgba(37, 99, 235, 0.45);
    border-color: #93c5fd;
}

/* Loop toggle */
.loop-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--color-border);
    background: var(--color-control-bg);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.loop-toggle:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.loop-toggle:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.loop-toggle.active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

[data-theme="dark"] .loop-toggle.active {
    background: rgba(37, 99, 235, 0.35);
    border-color: #60a5fa;
    color: #93c5fd;
}

/* ===========================================
   Monitor Section (Solo + Stereo/Mono)
   =========================================== */

.monitor-section {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.monitor-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.monitor-label {
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.monitor-buttons {
    display: flex;
    gap: 4px;
}

.monitor-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--color-border);
    background: var(--color-control-bg);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
}

.monitor-btn:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.monitor-btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.monitor-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* Solo buttons: red/blue when active */
#solo-left-btn.active {
    background: rgba(220, 38, 38, 0.9);
    border-color: rgba(220, 38, 38, 0.9);
}

#solo-right-btn.active {
    background: rgba(37, 99, 235, 0.9);
    border-color: rgba(37, 99, 235, 0.9);
}

/* Mono toggle button: fixed width to prevent resize on label change */
.monitor-btn-wide {
    width: 56px;
    padding: 0 var(--spacing-xs);
}

/* Mono toggle: yellow when active (mono mode) */
#mono-toggle.active {
    background: rgba(217, 119, 6, 0.9);
    border-color: rgba(217, 119, 6, 0.9);
}

[data-theme="dark"] .monitor-btn.active {
    color: white;
}

/* ===========================================
   Technique Card
   =========================================== */

.technique-card {
    display: flex;
    flex-direction: column;
}

.technique-card .card-header {
    margin-bottom: var(--spacing-xs);
}

/* Vertical button stack on desktop */
.technique-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.technique-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 0.5rem 0.75rem;
    background: var(--color-control-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    font-family: inherit;
    white-space: nowrap;
}

.technique-button:hover {
    border-color: var(--color-text-muted);
    background: var(--color-card-bg);
}

.technique-button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.technique-button.active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}

.technique-button.active:hover {
    background: rgba(37, 99, 235, 0.2);
    border-color: var(--color-accent-hover);
}

.technique-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.2;
}

.technique-button.active .technique-name {
    color: var(--color-accent);
}

.technique-subtitle {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
}

.technique-button.active .technique-subtitle {
    color: var(--color-accent);
    opacity: 0.8;
}

[data-theme="dark"] .technique-button.active {
    background: rgba(37, 99, 235, 0.35);
    border-color: #60a5fa;
}

[data-theme="dark"] .technique-button.active:hover {
    background: rgba(37, 99, 235, 0.45);
    border-color: #93c5fd;
}

[data-theme="dark"] .technique-button.active .technique-name {
    color: #93c5fd;
}

[data-theme="dark"] .technique-button.active .technique-subtitle {
    color: #93c5fd;
}

/* ===========================================
   Parameters Card
   =========================================== */

.params-card {
    display: flex;
    flex-direction: column;
}

.params-card .card-header {
    margin-bottom: var(--spacing-sm);
}

/* Fixed-height area for controls so description stays in place */
.params-controls-area {
    min-height: 160px;
}

/* Technique description inside params card */
.technique-description {
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--color-text-muted);
    opacity: 0.7;
    margin: 0;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.params-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.params-panel.hidden {
    display: none;
}

.params-fixed {
    font-size: 0.8125rem;
    color: var(--color-text);
    line-height: 1.5;
    margin: 0;
}

.params-note {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin: 0;
}

/* Info bar (full-width general description + guide link) */
.info-bar {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-text-muted);
}

.info-bar p {
    margin: 0;
}

.guide-link {
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: none;
}

.guide-link:hover {
    text-decoration: underline;
}

/* Angle preset buttons */
.angle-preset-group {
    display: flex;
    gap: var(--spacing-xs);
}

.angle-preset {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-control-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
}

.angle-preset:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.angle-preset:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.angle-preset.active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

[data-theme="dark"] .angle-preset.active {
    background: rgba(37, 99, 235, 0.35);
    border-color: #60a5fa;
    color: #93c5fd;
}

/* Pattern button group */
.pattern-button-group {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.pattern-button {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    background: var(--color-control-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.pattern-button:hover {
    border-color: var(--color-text-muted);
    background: var(--color-card-bg);
}

.pattern-button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.pattern-button.active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.pattern-button.active:hover {
    background: rgba(37, 99, 235, 0.2);
    border-color: var(--color-accent-hover);
}

[data-theme="dark"] .pattern-button.active {
    background: rgba(37, 99, 235, 0.35);
    border-color: #60a5fa;
    color: #93c5fd;
}

[data-theme="dark"] .pattern-button.active:hover {
    background: rgba(37, 99, 235, 0.45);
    border-color: #93c5fd;
}

/* Headphone notice */
.headphone-notice {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--color-text);
}

.headphone-notice svg {
    flex-shrink: 0;
    color: var(--color-warning);
}

[data-theme="dark"] .headphone-notice {
    background: rgba(245, 158, 11, 0.15);
}

/* Yaw control */
.yaw-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

#yaw-dial {
    cursor: grab;
    border-radius: 50%;
    background: var(--color-control-bg);
}

#yaw-dial:active {
    cursor: grabbing;
}

/* ===========================================
   Visualization Card (Polar Pattern)
   =========================================== */

.visualization-card {
    display: flex;
    flex-direction: column;
}

.visualization-card .card-header {
    margin-bottom: var(--spacing-xs);
}

.polar-canvas-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 1;
}

#polar-canvas {
    display: block;
    background: var(--color-control-bg);
    border-radius: var(--radius-md);
}

/* ===========================================
   Slider control
   =========================================== */

.mic-app .slider-control {
    flex: 1;
    min-width: 0;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--color-border);
    border-radius: 2px;
}

.mic-app .slider-control:focus {
    outline: none;
}

.mic-app .slider-control:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.slider-control::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.slider-control::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

/* ===========================================
   Playback controls in source card
   =========================================== */

.mic-app .playback-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Disabled state: visible but non-interactive */
.mic-app .playback-controls.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.mic-app .playback-controls .progress-container {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.mic-app .playback-controls .progress-container .waveform-wrapper {
    flex: 1;
    min-width: 0;
}

/* ===========================================
   Waveform Visualization
   =========================================== */

.waveform-wrapper {
    position: relative;
    height: 48px;
    background: var(--color-control-bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
}

.waveform-wrapper canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Progress overlay - fills from left */
.waveform-progress {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 0%;
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.25) 0%, rgba(59, 130, 246, 0.15) 100%);
    pointer-events: none;
    transition: none;
}

/* Playhead cursor line */
.waveform-cursor {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0%;
    width: 2px;
    background: var(--color-accent);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
}

.waveform-wrapper:hover .waveform-cursor,
.waveform-wrapper.seeking .waveform-cursor {
    opacity: 1;
}

/* Hover state */
.waveform-wrapper:hover {
    background: var(--color-card-bg);
}

[data-theme="dark"] .waveform-wrapper {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .waveform-wrapper:hover {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .waveform-progress {
    background: linear-gradient(90deg, rgba(96, 165, 250, 0.3) 0%, rgba(59, 130, 246, 0.15) 100%);
}

/* ===========================================
   Audio Source Row (compact layout)
   =========================================== */

.audio-source-row {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-sm);
}

.audio-source-row .preset-select {
    flex: 1;
    min-width: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    font-family: inherit;
    background: var(--color-control-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: auto;
}

.audio-source-row .preset-select:hover {
    border-color: var(--color-text-muted);
}

.audio-source-row .preset-select:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Upload area - equal width to preset select */
.upload-compact {
    flex: 1;
    min-width: 0;
}

.upload-compact-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    width: 100%;
    height: 100%;
    min-height: 36px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-accent);
    font-size: 0.8125rem;
}

.upload-compact-label:hover,
.upload-compact.dragover .upload-compact-label {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

[data-theme="dark"] .upload-compact-label:hover,
[data-theme="dark"] .upload-compact.dragover .upload-compact-label {
    background: rgba(37, 99, 235, 0.1);
}

/* ===========================================
   Footnotes
   =========================================== */

.footnote-separator {
    margin: var(--spacing-xl) 0 var(--spacing-md);
    border: none;
    border-top: 1px solid var(--color-border);
}

.footnotes {
    margin-top: 0;
}

.footnote {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.6;
}

.footnote + .footnote {
    margin-top: var(--spacing-sm);
}

.footnote sup {
    margin-right: 0.25em;
}

.footnote a {
    color: var(--color-accent);
    text-decoration: none;
}

.footnote a:hover {
    text-decoration: underline;
}

/* Scroll margin so return link lands with paragraph visible near top */
[id^="fnref"] {
    scroll-margin-top: 2rem;
}