/* ============================================
   TIMBRE LAB - MAIN STYLES
   Mobile-first responsive design
   ============================================ */

:root {
    --color-primary: #20384a;
    --color-primary-dark: #172b38;
    --color-secondary: #5d87a1;
    --color-bg: #f7edd4;
    --color-bg-alt: #f1e3c3;
    --color-border: rgba(33, 50, 58, 0.22);
    --color-text: #21323a;
    --color-text-light: #3a4a50;
    --color-success: #5c7150;
    --color-danger: #b86a55;
    --color-warning: #c99a32;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --radius-sm: 0.5rem;
    --radius-md: 0.875rem;
    --radius-lg: 1.125rem;

    --shadow-sm: 2px 2px 0 rgba(33, 50, 58, 0.1);
    --shadow-md: 3px 3px 0 rgba(33, 50, 58, 0.12);
    --shadow-lg: 4px 4px 0 rgba(33, 50, 58, 0.14);
}

* {
    box-sizing: border-box;
}

/* ===== ROOT CONTAINER ===== */
#timbre-lab-root {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--color-text);
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.2), transparent 35%),
        linear-gradient(180deg, #f7edd4 0%, #f1e3c3 100%);
    padding: var(--spacing-md);
    max-width: 100%;
}

/* ===== MAIN CONTAINER ===== */
.timbre-lab-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    width: 100%;
}

/* ===== TAB NAVIGATION ===== */
.timbre-lab-tabs {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0;
}

.timbre-lab-tab-button {
    font-size: 1rem;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
}

.timbre-lab-tab-button:hover {
    color: var(--color-text);
}

.timbre-lab-tab-button.active {
    color: var(--lab-accent-contrast);
}

/* ===== TAB CONTENT ===== */
.timbre-lab-tab-content {
    display: none;
    animation: fadeIn 0.2s ease;
}

.timbre-lab-tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== ANALYZER TAB ===== */
.analyzer-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Canvas elementi */
.canvas-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    width: 100%;
}

.canvas-wrapper {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.canvas-wrapper h3 {
    margin: 0 0 var(--spacing-md) 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

canvas {
    display: block;
    width: 100%;
    height: auto;
    background: #f7edd4;
    border-radius: var(--radius-sm);
}

/* Metrics display */
.metrics-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    background: var(--color-bg-alt);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

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

.metric-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: 'Monaco', 'Courier New', monospace;
}

.metric-unit {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.metric-item--f0,
#metric-f0-unit {
    min-width: 0;
}

#metric-f0-unit {
    line-height: 1.35;
}

/* ===== CONTROLS ===== */
.controls-section {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
}

.button-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.button-group > .lab-btn,
.button-group > button {
    flex: 1 1 180px;
}

button {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
}

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

button.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

button.btn-primary:active {
    transform: scale(0.98);
}

/* Secondary button */
button.btn-secondary {
    background: var(--color-bg-alt);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

/* Danger button */
button.btn-danger {
    background: var(--color-danger);
    color: white;
}

button.btn-danger:hover {
    background: #dc2626;
}

/* Success button */
button.btn-success {
    background: var(--color-success);
    color: white;
}

button.btn-success:hover {
    background: #059669;
}

/* Disabled state */
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ===== STATUS INDICATOR ===== */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-indicator.recording {
    background: #fecaca;
    color: #dc2626;
}

.status-indicator.recording::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #dc2626;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.status-indicator.frozen {
    background: #bfdbfe;
    color: #1e40af;
}

.status-indicator.idle {
    background: #d1d5db;
    color: #6b7280;
}

/* ===== SYNTH TAB ===== */
.synth-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.synth-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.control-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

/* Sliderji */
.slider-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-text-light);
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--color-bg-alt);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

input[type="range"]::-moz-range-thumb:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.slider-value {
    text-align: right;
    font-weight: 600;
    color: var(--color-primary);
    font-family: 'Monaco', 'Courier New', monospace;
}

/* Harmonics grid */
.harmonics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--spacing-md);
}

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

.harmonic-control label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-align: center;
}

/* ADSR sliderji */
.adsr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-md);
}

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

.adsr-item label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    text-align: center;
}

/* ===== IMPORT SECTION ===== */
.import-section {
    background: var(--color-bg-alt);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px dashed var(--color-border);
}

.import-section h3 {
    margin-top: 0;
    color: var(--color-text);
}

.import-note {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: var(--spacing-md) 0;
}

/* ===== ERROR/INFO MESSAGES ===== */
.message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.message.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.message.info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.message.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.message.error.lab-feedback {
    border-color: var(--lab-danger-border);
    background: var(--lab-danger-bg);
    color: var(--lab-danger);
}

.message.info.lab-feedback {
    border-color: rgba(37, 99, 235, 0.22);
    background: var(--lab-accent-bg);
    color: var(--lab-accent-dark);
}

.message.success.lab-feedback {
    border-color: var(--lab-success-border);
    background: var(--lab-success-bg);
    color: var(--lab-success);
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet (640px and up) */
@media (min-width: 640px) {
    #timbre-lab-root {
        padding: var(--spacing-lg);
    }

    .canvas-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .metrics-panel {
        grid-template-columns: repeat(4, 1fr);
    }

    .adsr-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    button {
        padding: var(--spacing-md) var(--spacing-xl);
    }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    #timbre-lab-root {
        padding: var(--spacing-xl);
        margin: 0 auto;
    }

    .canvas-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .controls-section {
        align-items: center;
        gap: var(--spacing-lg);
    }

    .button-group {
        flex-wrap: nowrap;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode support */
/* ===== INFO BUTTONS ===== */
.info-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    padding: 0;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.info-btn:hover {
    background: var(--color-primary-dark);
    transform: scale(1.1);
}

/* ===== INFO MODAL ===== */
.info-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    align-items: center;
    justify-content: center;
}

.info-modal-content {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    position: relative;
    border: 2px solid var(--color-primary);
}

.close-btn {
    position: absolute;
    right: var(--spacing-md);
    top: var(--spacing-md);
    background: transparent;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-text);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    color: var(--color-primary);
}

.info-modal-content h3 {
    margin-top: 0;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.info-modal-content p {
    margin: 0;
    color: var(--color-text);
    line-height: 1.6;
    white-space: pre-wrap;
}

/* ===== DARK MODE ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #1f2937;
        --color-bg-alt: #111827;
        --color-border: #374151;
        --color-text: #f3f4f6;
        --color-text-light: #9ca3af;
    }

    canvas {
        background: #111827;
        border-color: #374151;
    }
    
    .info-modal-content {
        background-color: #1f2937;
        border-color: #3b82f6;
    }
}

/* ===== ENHANCED STYLES v2 ===== */

/* Header */
.tl-header { display: flex; align-items: baseline; gap: 1rem; margin-bottom: -0.5rem; }
.tl-title { margin: 0; font-size: 1.5rem; color: var(--color-primary); }
.tl-subtitle { font-size: 0.8rem; color: var(--color-text-light); }

/* Metric row item */
.metric-label-row { display: flex; gap: 0.4rem; align-items: center; }
.status-col { display: flex; align-items: center; }

/* Featured harmonics canvas */
.canvas-harmonics-featured {
    border: 2px solid var(--color-primary);
    background: #0f172a;
    padding: 0;
    overflow: hidden;
}
.canvas-harmonics-featured .canvas-header {
    padding: 0.75rem 1rem 0.5rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    display: flex; align-items: center; gap: 1rem;
}
.canvas-harmonics-featured h3 {
    color: #e2e8f0 !important;
    margin: 0 !important;
    font-size: 0.9rem !important;
    font-weight: 700 !important;
    text-transform: none !important;
    letter-spacing: normal !important;
}
.canvas-harmonics-featured canvas {
    background: #0f172a !important;
    border-radius: 0 !important;
    width: 100% !important;
}

/* Canvas header */
.canvas-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.canvas-header h3 { margin: 0; flex: 1; }

/* Edu bar under harmonics */
.harmonics-edu-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #1e293b;
    border-top: 1px solid #334155;
}
.edu-tip {
    font-size: 0.78rem;
    color: #94a3b8;
}

/* Smaller canvases in a row */
.canvas-container {
    grid-template-columns: repeat(3, 1fr) !important;
}
.canvas-wrapper canvas {
    background: #0f172a !important;
}
.canvas-wrapper {
    background: #0f172a;
    border-color: #1e293b;
}
.canvas-wrapper h3 {
    color: #94a3b8 !important;
}

/* Info btn large */
.info-btn-lg {
    width: auto !important;
    height: auto !important;
    border-radius: 6px !important;
    padding: 2px 8px !important;
    font-size: 11px !important;
    white-space: nowrap;
}

/* Edu panel */
.edu-panel {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}
.edu-panel-title {
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}
.edu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.75rem;
}
.edu-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.75rem;
}
.edu-card-icon { font-size: 1.2rem; margin-bottom: 0.25rem; }
.edu-card-title { font-size: 0.8rem; font-weight: 700; margin-bottom: 0.25rem; color: var(--color-text); }
.edu-card-text { font-size: 0.75rem; color: var(--color-text-light); line-height: 1.4; }

/* Presets */
.presets-section {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}
.presets-header {
    display: flex; align-items: center; gap: 0.5rem;
    margin-bottom: 0.75rem;
}
.presets-header h3 { margin: 0; font-size: 0.9rem; }
.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.preset-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 0.65rem;
    margin-bottom: 0.9rem;
}

.preset-preview {
    display: grid;
    gap: 0.3rem;
    padding: 0.85rem 0.95rem;
    border-radius: 16px;
    border: 1px solid rgba(173, 132, 83, 0.16);
    background: rgba(255, 255, 255, 0.72);
}

.preset-preview__title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text);
}

.preset-preview__text {
    font-size: 0.78rem;
    line-height: 1.45;
    color: var(--color-text-light);
}
.preset-btn {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.25rem;
    font-size: 0.8rem;
    cursor: pointer;
    text-align: center;
    line-height: 1.4;
    transition: all 0.2s;
    color: var(--color-text);
}
.preset-btn span { font-size: 0.65rem; color: var(--color-text-light); display: block; }
.preset-btn:hover, .preset-btn.active {
    border-color: var(--color-primary);
    background: #eff6ff;
    color: var(--color-primary);
}
.preset-tip {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* F0 hints */
.f0-hints {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.25rem;
}
.f0-hint {
    font-size: 0.72rem;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2px 8px;
    cursor: pointer;
    color: var(--color-text-light);
    transition: all 0.15s;
}
.f0-hint:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ADSR visualizer */
.adsr-visualizer {
    background: #0f172a;
    border-radius: var(--radius-sm);
    padding: 0.25rem;
    margin-bottom: 0.5rem;
}

/* ADSR hints */
.adsr-hint {
    font-size: 0.68rem;
    color: var(--color-text-light);
    line-height: 1.3;
    margin-top: 2px;
}

/* Harmonic tip */
.harmonic-tip {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 0.5rem;
}

.tuner-panel {
    display: grid;
    gap: 1rem;
}

.tuner-readout {
    display: grid;
    gap: 0.3rem;
    justify-items: center;
    text-align: center;
}

.tuner-note {
    font-size: 2rem;
    font-weight: 700;
    color: var(--lab-text, #1f2937);
}

.tuner-frequency {
    font-size: 0.95rem;
    color: var(--color-text);
}

.tuner-cents {
    font-size: 0.82rem;
    color: var(--color-text-light);
}

.tuner-cents.is-good {
    color: #15803d;
}

.tuner-cents.is-close {
    color: #b45309;
}

.tuner-cents.is-off {
    color: #b91c1c;
}

.tuner-meter {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 0.75rem;
    align-items: center;
}

.tuner-meter-label {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.tuner-meter-track {
    position: relative;
    height: 14px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(185, 28, 28, 0.14), rgba(245, 158, 11, 0.18) 25%, rgba(21, 128, 61, 0.22) 50%, rgba(245, 158, 11, 0.18) 75%, rgba(185, 28, 28, 0.14));
    overflow: hidden;
}

.tuner-meter-center {
    position: absolute;
    inset: -2px auto -2px 50%;
    width: 2px;
    background: rgba(31, 41, 55, 0.8);
    transform: translateX(-50%);
}

.tuner-needle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #2563eb;
    border: 2px solid #ffffff;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.18);
    transition: left 0.12s ease-out;
}

.tuner-reference {
    display: grid;
    gap: 0.5rem;
}

/* Harmonics mini chart */
.harmonics-mini-chart {
    margin-bottom: 0.5rem;
}

/* Info modal text can have HTML */
#info-modal-text ul { padding-left: 1.2rem; margin: 0.5rem 0; }
#info-modal-text li { margin-bottom: 0.25rem; font-size: 0.9rem; }
#info-modal-text p { margin: 0.5rem 0; font-size: 0.9rem; line-height: 1.5; }
#info-modal-text code { 
    background: var(--color-bg-alt); 
    padding: 1px 5px; 
    border-radius: 3px; 
    font-family: monospace; 
    font-size: 0.85rem;
}

/* Btn lg */
.btn-lg {
    font-size: 1.1rem !important;
    padding: 0.75rem 2rem !important;
}

/* Dark mode for canvas wrappers */
@media (prefers-color-scheme: dark) {
    .canvas-wrapper { background: #0f172a; border-color: #1e293b; }
    .canvas-harmonics-featured { border-color: #2563eb; }
    .preset-btn:hover, .preset-btn.active { background: #1e3a5f; }
    .f0-hint:hover { background: #1e293b; }
    .edu-card { background: #1e293b; border-color: #334155; }
}

/* Responsive: stack canvases on mobile */
@media (max-width: 639px) {
    .canvas-container { grid-template-columns: 1fr !important; }
    .presets-grid { grid-template-columns: repeat(3, 1fr); }
    .edu-grid { grid-template-columns: 1fr; }
    .button-group { display: grid; grid-template-columns: 1fr; }
}

/* ===== PHASE 1 LAB ALIGNMENT ===== */
#timbre-lab-root {
    font-family: inherit;
    color: var(--lab-text, #1f2937);
    background: transparent;
    padding: 0;
    max-width: 100%;
}

.timbre-lab-container {
    width: 100%;
    max-width: var(--lab-max-w, 1040px);
    margin: 0 auto;
}

.timbre-lab-container__inner {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    background:
        radial-gradient(circle at top left, rgba(222, 170, 108, 0.12), transparent 28%),
        linear-gradient(180deg, rgba(255, 251, 245, 0.98), rgba(249, 244, 236, 0.98));
    border: 1px solid rgba(173, 132, 83, 0.2);
    border-radius: 28px;
    box-shadow: 0 22px 44px rgba(83, 50, 26, 0.12);
}

.tl-header {
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin: 0;
}

.tl-header__main {
    display: grid;
    gap: 0.4rem;
}

.tl-title {
    margin: 0;
    color: var(--lab-text, #1f2937);
}

.tl-subtitle {
    margin: 0;
    font-size: 0.96rem;
    color: var(--lab-muted, #6f6255);
}

.tl-header__meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
    justify-content: flex-end;
}

.tl-header__chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.5rem;
}

.help-usage-btn {
    min-height: 3.5rem;
    padding: 0.9rem 1.2rem;
    border: 1px solid rgba(196, 141, 71, 0.4);
    border-radius: 18px;
    background: linear-gradient(135deg, #c88535 0%, #a95c1a 100%);
    color: #fff8ef;
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    white-space: normal;
    max-width: 19rem;
    box-shadow: 0 14px 28px rgba(110, 61, 20, 0.2);
}

.help-usage-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 30px rgba(110, 61, 20, 0.24);
}

.timbre-lab-topbar {
    display: flex;
    justify-content: flex-start;
}

.timbre-lab-tabs {
    width: auto;
}

.timbre-lab-tab-content.active {
    display: block;
}

.analyzer-section,
.synth-section {
    gap: 1.25rem;
}

.metrics-panel {
    background: linear-gradient(180deg, rgba(255, 252, 248, 0.96), rgba(248, 241, 231, 0.96));
    border: 1px solid rgba(173, 132, 83, 0.16);
    border-radius: 22px;
    box-shadow: none;
}

.metric-label {
    color: #8a735d;
}

.metric-value {
    color: #7a4b22;
}

.status-indicator.idle {
    background: rgba(170, 150, 126, 0.18);
    color: #6e5a45;
}

.status-indicator.recording {
    background: rgba(205, 82, 59, 0.14);
    color: #a63d29;
}

.status-indicator.frozen {
    background: rgba(137, 108, 63, 0.16);
    color: #7a5523;
}

.canvas-wrapper {
    background: linear-gradient(180deg, rgba(35, 31, 28, 0.98), rgba(19, 17, 15, 0.98));
    border: 1px solid rgba(154, 126, 86, 0.28);
    border-radius: 22px;
    box-shadow: none;
}

.canvas-wrapper h3 {
    color: #d8c2a7 !important;
}

.canvas-wrapper canvas {
    background: #11100e !important;
}

.canvas-harmonics-featured {
    border-color: rgba(201, 154, 86, 0.92);
}

.canvas-harmonics-featured .canvas-header {
    padding: 0.9rem 1.05rem 0.55rem;
    background: linear-gradient(135deg, #1d1916 0%, #312722 100%);
}

.harmonics-edu-bar {
    background: rgba(59, 49, 42, 0.98);
    border-top-color: rgba(166, 137, 97, 0.24);
}

.edu-tip {
    color: #d7c0a4;
}

.controls-section {
    align-items: stretch;
    gap: 0.75rem;
}

.button-group {
    width: 100%;
}

.edu-panel,
.presets-section,
.import-section,
.control-group {
    background: linear-gradient(180deg, rgba(255, 252, 248, 0.94), rgba(248, 241, 232, 0.94));
    border: 1px solid rgba(173, 132, 83, 0.16);
    border-radius: 22px;
    box-shadow: none;
}

.edu-panel-title {
    color: #8a4f1d;
}

.edu-card {
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(173, 132, 83, 0.16);
    border-radius: 18px;
}

.presets-header,
.canvas-header {
    align-items: center;
}

.preset-btn {
    min-height: 4.5rem;
    background: rgba(255, 255, 255, 0.82);
    border-color: rgba(173, 132, 83, 0.18);
    border-radius: 16px;
}

.preset-btn:hover,
.preset-btn.active {
    background: rgba(244, 231, 213, 0.95);
    border-color: #c48d47;
    color: #8a4f1d;
}

.preset-btn span,
.preset-tip,
.f0-hint,
.adsr-hint,
.harmonic-tip,
.edu-card-text {
    color: #756553;
}

.f0-hint {
    background: rgba(255, 255, 255, 0.72);
    border-radius: 999px;
    border-color: rgba(173, 132, 83, 0.18);
    padding: 0.3rem 0.65rem;
}

.f0-hint:hover {
    background: rgba(244, 231, 213, 0.95);
}

.adsr-visualizer {
    background: linear-gradient(180deg, rgba(35, 31, 28, 0.98), rgba(19, 17, 15, 0.98));
    border: 1px solid rgba(154, 126, 86, 0.2);
}

.info-btn {
    border: 1px solid rgba(173, 132, 83, 0.2);
    background: rgba(255, 255, 255, 0.82);
    color: #8a4f1d;
}

.info-btn:hover {
    background: rgba(244, 231, 213, 0.95);
}

.info-modal-content {
    background: linear-gradient(180deg, rgba(255, 251, 245, 0.98), rgba(248, 241, 232, 0.98));
    border: 1px solid rgba(173, 132, 83, 0.2);
    border-radius: 24px;
    box-shadow: 0 22px 44px rgba(50, 34, 20, 0.18);
}

@media (max-width: 800px) {
    .tl-header {
        flex-direction: column;
    }

    .tl-header__meta {
        align-items: stretch;
        justify-content: flex-start;
        width: 100%;
    }

    .tl-header__chips {
        justify-content: flex-start;
    }

    .help-usage-btn {
        width: 100%;
        max-width: none;
    }
}