/**
 * Audio Annotation Styles
 *
 * Styles for the audio annotation interface including:
 * - Waveform container
 * - Toolbar and controls
 * - Segment list
 * - Questions panel
 */

/* ==================== Container ==================== */

.audio-annotation-container {
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.5rem);
    background: var(--card, #ffffff);
    padding: 1rem;
    margin-bottom: 1rem;
}

/* ==================== Toolbar ==================== */

.audio-annotation-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    padding: 0.75rem;
    background: var(--muted, #f9fafb);
    border-radius: var(--radius, 0.5rem);
    margin-bottom: 1rem;
}

.audio-annotation-toolbar > div {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tool-group-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--muted-foreground, #6b7280);
    margin-right: 0.25rem;
}

/* Playback controls */
.playback-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.playback-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.375rem);
    background: var(--background, #ffffff);
    color: var(--foreground, #1f2937);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.playback-btn:hover {
    background: var(--accent, #f3f4f6);
    border-color: var(--primary, #3b82f6);
}

.playback-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.time-display {
    font-size: 0.75rem;
    font-family: monospace;
    color: var(--muted-foreground, #6b7280);
    padding: 0 0.5rem;
}

/* Playback rate control */
.playback-rate-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.playback-rate-select {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.375rem);
    background: var(--background, #ffffff);
    cursor: pointer;
}

/* Label selector */
.label-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.label-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.375rem);
    background: var(--background, #ffffff);
    color: var(--foreground, #1f2937);
    cursor: pointer;
    transition: all 0.15s ease;
}

.label-btn:hover {
    background: var(--accent, #f3f4f6);
}

.label-btn.active {
    border-color: var(--label-color, var(--primary, #3b82f6));
    background: color-mix(in srgb, var(--label-color, var(--primary, #3b82f6)) 15%, white);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--label-color, var(--primary, #3b82f6)) 25%, transparent);
}

.label-color-dot {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Zoom controls */
.zoom-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.zoom-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    height: 2rem;
    padding: 0 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.375rem);
    background: var(--background, #ffffff);
    color: var(--foreground, #1f2937);
    cursor: pointer;
    transition: all 0.15s ease;
}

.zoom-btn:hover {
    background: var(--accent, #f3f4f6);
    border-color: var(--primary, #3b82f6);
}

/* Segment controls */
.segment-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.segment-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.375rem);
    background: var(--background, #ffffff);
    color: var(--foreground, #1f2937);
    cursor: pointer;
    transition: all 0.15s ease;
}

.segment-btn:hover:not(:disabled) {
    background: var(--accent, #f3f4f6);
    border-color: var(--primary, #3b82f6);
}

.segment-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.segment-btn.delete-btn:hover:not(:disabled) {
    background: #fef2f2;
    border-color: #ef4444;
    color: #ef4444;
}

/* Segment count */
.count-group {
    margin-left: auto;
}

.segment-count {
    font-size: 0.75rem;
    color: var(--muted-foreground, #6b7280);
}

.count-value {
    font-weight: 600;
    color: var(--foreground, #1f2937);
}

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

.waveform-wrapper {
    margin-bottom: 1rem;
}

.waveform-container {
    height: 200px;
    background: var(--muted, #f9fafb);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.5rem);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.overview-container {
    height: 50px;
    background: var(--muted, #f9fafb);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.5rem);
    overflow: hidden;
}

/* Affordance hints on the overview / zoomview labels.
   #6b7280 keeps a WCAG-AA (>=4.5:1) contrast on the light background. */
.overview-hint,
.zoomview-hint {
    font-style: italic;
    color: var(--muted-foreground, #6b7280);
    font-weight: 400;
}

/* ==================== Segment List ==================== */

.segment-list-container {
    margin-top: 1rem;
}

.segment-list-container h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--foreground, #1f2937);
    margin-bottom: 0.75rem;
}

.segment-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.segment-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--background, #ffffff);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.5rem);
    cursor: pointer;
    transition: all 0.15s ease;
}

.segment-item:hover {
    background: var(--accent, #f3f4f6);
}

.segment-item.active {
    border-color: var(--primary, #3b82f6);
    background: color-mix(in srgb, var(--primary, #3b82f6) 5%, white);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary, #3b82f6) 15%, transparent);
}

.segment-color {
    width: 1rem;
    height: 1rem;
    border-radius: 0.25rem;
    flex-shrink: 0;
}

.segment-info {
    flex: 1;
    min-width: 0;
}

.segment-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--foreground, #1f2937);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.segment-time {
    display: block;
    font-size: 0.75rem;
    font-family: monospace;
    color: var(--muted-foreground, #6b7280);
}

.segment-actions {
    display: flex;
    gap: 0.25rem;
}

.segment-play-btn,
.segment-delete-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    padding: 0;
    border: 1px solid transparent;
    border-radius: var(--radius, 0.375rem);
    background: transparent;
    color: var(--muted-foreground, #6b7280);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.segment-play-btn:hover {
    background: var(--accent, #f3f4f6);
    color: var(--primary, #3b82f6);
    border-color: var(--primary, #3b82f6);
}

.segment-delete-btn:hover {
    background: #fef2f2;
    color: #ef4444;
    border-color: #ef4444;
}

/* ==================== Questions Panel ==================== */

.segment-questions-panel {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--muted, #f9fafb);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.5rem);
}

.segment-questions-panel h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--foreground, #1f2937);
    margin-bottom: 0.75rem;
}

.segment-questions-content {
    /* Content container */
}

.segment-questions-header {
    font-size: 0.875rem;
    color: var(--muted-foreground, #6b7280);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border, #e5e7eb);
}

.segment-questions-placeholder {
    font-size: 0.875rem;
    color: var(--muted-foreground, #6b7280);
    font-style: italic;
}

/* ==================== Empty State ==================== */

.segment-list:empty::before {
    content: 'No segments yet. Right-click and drag on the waveform, or use the [ and ] keys, to create segments.';
    display: block;
    text-align: center;
    padding: 2rem;
    font-size: 0.875rem;
    color: var(--muted-foreground, #6b7280);
}

/* ==================== Responsive ==================== */

@media (max-width: 768px) {
    .audio-annotation-toolbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .audio-annotation-toolbar > div {
        width: 100%;
    }

    .label-group {
        width: 100%;
        justify-content: flex-start;
    }

    .count-group {
        margin-left: 0;
    }

    .waveform-container {
        height: 150px;
    }

    .overview-container {
        height: 40px;
    }
}

/* ==================== Spectrogram ==================== */

.spectrogram-section {
    margin-top: 0.75rem;
}

.spectrogram-container {
    position: relative;
    height: 150px;
    background: var(--muted, #1a1a1a);
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.5rem);
    overflow: hidden;
}

.spectrogram-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.spectrogram-playhead-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.spectrogram-label {
    font-size: 0.85em;
    color: var(--muted-foreground, #666);
    margin-bottom: 4px;
}

/* Spectrogram color map selector (optional toolbar addition) */
.spectrogram-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.spectrogram-colormap-select {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: var(--radius, 0.375rem);
    background: var(--background, #ffffff);
    cursor: pointer;
}

/* Frequency axis labels inside spectrogram */
.spectrogram-container .freq-label {
    position: absolute;
    left: 4px;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
    pointer-events: none;
}

/* ==================== Peaks.js Overrides ==================== */

/* Segment styling */
.peaks-segment {
    opacity: 0.6;
}

.peaks-segment:hover {
    opacity: 0.8;
}

.peaks-segment.selected {
    opacity: 0.9;
}

/* Time axis */
.peaks-axis {
    font-family: inherit;
}

/* Handle markers */
.peaks-handle {
    cursor: ew-resize;
}

/* Overview highlight */
.peaks-overview-highlight {
    stroke: var(--primary, #3b82f6);
    stroke-width: 2;
    fill: none;
}

/* ==================== Responsive Spectrogram ==================== */

@media (max-width: 768px) {
    .spectrogram-container {
        height: 100px;
    }
}