/* ===========================================
   Shared Audio Components
   Consolidated styles for audio project UI elements
   =========================================== */

/* ===========================================
   Info Tooltip System
   =========================================== */

.info-trigger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1.5px solid var(--color-text-muted);
    background: transparent;
    padding: 0;
    color: var(--color-text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    font-family: inherit;
    cursor: help;
    margin-left: var(--spacing-xs);
    transition: all var(--transition-fast);
    vertical-align: middle;
}

.info-trigger:hover,
.info-trigger:focus-visible {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.info-trigger:focus {
    outline: none;
}

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

/* Tooltip - hidden by default, shown via JS */
.info-tooltip {
    display: none;
}

/* ===========================================
   Play Button
   =========================================== */

.play-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: background-color var(--transition-normal), transform var(--transition-fast), box-shadow var(--transition-normal);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
    flex-shrink: 0;
}

/* Default size */
.play-button {
    width: 42px;
    height: 42px;
}

/* Large variant */
.play-button--large {
    width: 48px;
    height: 48px;
}

.play-button:hover {
    background: var(--color-accent-hover);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

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

.play-button:active {
    transform: scale(0.95);
    box-shadow: 0 1px 4px rgba(37, 99, 235, 0.3);
}

.play-button svg {
    flex-shrink: 0;
}

/* Play/pause icon states */
.play-button .icon-pause {
    display: none;
}

.play-button.playing .icon-play {
    display: none;
}

.play-button.playing .icon-pause {
    display: block;
}

/* Dark mode: better contrast with white text */
[data-theme="dark"] .play-button {
    background: #3b82f6;
}

[data-theme="dark"] .play-button:hover {
    background: #2563eb;
}

/* ===========================================
   Slider Controls (Gain, Frequency, etc.)
   =========================================== */

.slider-control {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    cursor: pointer;
    background: var(--color-control-bg);
}

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

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

/* Webkit (Chrome, Safari, Edge) slider thumb */
.slider-control::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-fast);
}

.slider-control::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Firefox slider thumb */
.slider-control::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-fast);
}

.slider-control::-moz-range-thumb:hover {
    transform: scale(1.2);
}

/* Firefox slider track */
.slider-control::-moz-range-track {
    background: var(--color-control-bg);
    border-radius: 3px;
    height: 6px;
}

/* Gain row layout */
.gain-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.gain-slider {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--color-control-bg);
    border-radius: 3px;
}

.gain-slider:focus {
    outline: none;
}

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

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

.gain-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

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

.gain-text {
    font-size: 0.75rem;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
    color: var(--color-text-muted);
    min-width: 45px;
    text-align: right;
}

/* Gain control wrapper */
.gain-control {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.gain-control .control-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ===========================================
   Control Groups and Labels
   =========================================== */

.control-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.control-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* Inline control group variant */
.control-group.inline {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0;
    background: transparent;
    border: none;
    min-width: auto;
}

.control-group.inline .control-label {
    margin-bottom: 0;
    font-size: 0.75rem;
}

/* .card-header-inline defined in components.css */

/* ===========================================
   Progress Bar and Time Display
   =========================================== */

.progress-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex: 1;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--color-border);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    overflow: visible;
    transition: height var(--transition-fast);
}

.progress-bar:hover {
    height: 8px;
    background: #d1d5db;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), #3b82f6);
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
}

.time-display {
    font-size: 0.75rem;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
    color: var(--color-text-muted);
    min-width: 3rem;
    text-align: center;
}

/* ===========================================
   Upload Area
   =========================================== */

.upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.upload-label svg {
    color: var(--color-accent);
}

/* Compact upload area (shown after file upload) */
.upload-area-compact {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    flex-shrink: 0;
}

.upload-area-compact label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.upload-area-compact .upload-icon {
    margin: 0;
    color: var(--color-accent);
}

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

[data-theme="dark"] .upload-area-compact:hover,
[data-theme="dark"] .upload-area-compact.dragover {
    background: rgba(37, 99, 235, 0.15);
}

/* Dark mode */
[data-theme="dark"] .upload-area:hover,
[data-theme="dark"] .upload-area.drag-over {
    background: rgba(37, 99, 235, 0.1);
}

/* ===========================================
   Source Buttons
   =========================================== */

.source-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.source-button {
    flex: 1;
    min-width: 80px;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    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);
}

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

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

.source-button.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* Dark mode: better contrast with white text */
[data-theme="dark"] .source-button.active {
    background: #3b82f6;
    border-color: #3b82f6;
    color: white;
}

/* ===========================================
   Action Buttons
   =========================================== */

.action-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    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);
}

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

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

.action-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary action button */
.action-button-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.action-button-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: white;
}

/* Dark mode for primary button */
[data-theme="dark"] .action-button-primary {
    background: #3b82f6;
    border-color: #3b82f6;
}

[data-theme="dark"] .action-button-primary:hover {
    background: #2563eb;
    border-color: #2563eb;
}

/* Secondary action button (green) */
.action-button-secondary {
    background: var(--color-success);
    border-color: var(--color-success);
    color: white;
}

.action-button-secondary:hover {
    background: var(--color-success-hover);
    border-color: var(--color-success-hover);
    color: white;
}

/* Running state (red) for demos */
.action-button.running,
.action-button-primary.running,
.action-button-secondary.running {
    background: var(--color-error);
    border-color: var(--color-error);
    color: white;
}

.action-button.running:hover,
.action-button-primary.running:hover,
.action-button-secondary.running:hover {
    background: #dc2626;
    border-color: #dc2626;
}

/* ===========================================
   Demo Section
   =========================================== */

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

.demo-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: var(--color-control-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.demo-button:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

.demo-button:hover .demo-icon {
    stroke: var(--color-accent);
}

.demo-button.running {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.demo-button.running .demo-icon {
    stroke: white;
}

.demo-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.demo-icon {
    transition: stroke var(--transition-fast);
}

/* Demo status display */
.demo-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: var(--color-accent-light);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
    animation: pulse-border 1.5s ease-in-out infinite;
}

@keyframes pulse-border {
    0%, 100% { border-color: var(--color-accent); }
    50% { border-color: rgba(37, 99, 235, 0.4); }
}

.demo-status.hidden {
    display: none;
}

.demo-status-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent);
}

/* Dark mode adjustments for demo */
[data-theme="dark"] .demo-status {
    background: rgba(37, 99, 235, 0.15);
}

/* ===========================================
   Playback Controls
   =========================================== */

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

.playback-controls.hidden {
    display: none;
}

/* Playback divider */
.playback-divider {
    width: 1px;
    height: 32px;
    background: var(--color-border);
    margin: 0 var(--spacing-xs);
}

/* Playback info positioning */
.playback-info {
    margin-left: var(--spacing-sm);
    margin-right: var(--spacing-xs);
    flex-shrink: 0;
}

.playback-info .info-tooltip {
    left: 0;
    transform: none;
}

.playback-info .info-tooltip::before,
.playback-info .info-tooltip::after {
    left: 12px;
    transform: none;
}

/* ===========================================
   Background/Educational Content
   =========================================== */

.background-content {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-text);
}

.background-content p {
    margin-bottom: var(--spacing-sm);
}

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

.background-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin: var(--spacing-md) 0 var(--spacing-xs);
}

.background-content ul,
.background-content ol {
    margin: var(--spacing-xs) 0 var(--spacing-sm) 1.5rem;
    padding: 0;
}

.background-content li {
    margin-bottom: 0.25rem;
}

.background-content .note {
    background: var(--color-control-bg);
    border-left: 3px solid var(--color-accent);
    padding: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.875rem;
}

/* Definition styling */
.background-content dfn {
    font-style: normal;
    font-weight: 600;
    color: var(--color-accent);
}

/* ===========================================
   Section Divider
   =========================================== */

.section-divider {
    width: 1px;
    background: var(--color-border);
    align-self: stretch;
    min-height: 60px;
}

@media (max-width: 640px) {
    .section-divider {
        width: 100%;
        height: 1px;
        min-height: 1px;
    }
}

/* .hidden utility defined in base.css */