:root {
    /* @tweakable modern Indian color palette - saffron and deep blue primary theme */
    --primary-50: #fff7ed;
    --primary-100: #ffedd5;
    --primary-200: #fed7aa;
    --primary-300: #fdba74;
    --primary-400: #fb923c;
    --primary-500: #f97316;
    --primary-600: #ea580c;
    --primary-700: #c2410c;
    --primary-800: #9a3412;
    --primary-900: #7c2d12;
    
    /* @tweakable secondary color theme inspired by traditional Indian textiles */
    --secondary-50: #f0f9ff;
    --secondary-100: #e0f2fe;
    --secondary-200: #bae6fd;
    --secondary-300: #7dd3fc;
    --secondary-400: #38bdf8;
    --secondary-500: #0ea5e9;
    --secondary-600: #0284c7;
    --secondary-700: #0369a1;
    --secondary-800: #075985;
    --secondary-900: #0c4a6e;
    
    /* @tweakable accent color inspired by traditional Indian saffron */
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    
    /* @tweakable warm neutral colors for modern Indian aesthetic */
    --gray-50: #fef7f0;
    --gray-100: #fdf2e9;
    --gray-200: #fde8d0;
    --gray-300: #fddbbd;
    --gray-400: #fb8500;
    --gray-500: #d2691e;
    --gray-600: #a0522d;
    --gray-700: #8b4513;
    --gray-800: #654321;
    --gray-900: #3e2723;
    
    /* @tweakable animation duration */
    --animation-fast: 0.15s;
    --animation-normal: 0.3s;
    --animation-slow: 0.5s;
    
    /* @tweakable border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* @tweakable shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Tweakable grid and UI dimensions */
    --grid-cell-size: 32px;
    --beat-indicator-size: 32px;
    --slider-width: 80px;
    /* @tweakable expanded effects grid to accommodate new instruments - changed from repeat(6, 1fr) to repeat(3, 1fr) for better layout */
    --effects-grid-columns: repeat(3, 1fr);
    --audio-sliders-columns: repeat(4, 1fr);
    --pulse-duration: 2s;
    
    /* @tweakable warm Indian-inspired panel background */
    --panel-bg: linear-gradient(135deg, #ffffff 0%, #fef7f0 100%);
    
    /* @tweakable traditional Indian geometric pattern overlay */
    --pattern-overlay: radial-gradient(circle at 25% 25%, rgba(249, 115, 22, 0.1) 0%, transparent 50%),
                      radial-gradient(circle at 75% 75%, rgba(14, 165, 233, 0.1) 0%, transparent 50%);
}

* {
    box-sizing: border-box;
}

body {
    /* @tweakable modern Indian website typography - Poppins font for contemporary Indian aesthetic */
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    /* @tweakable warm Indian-inspired background with subtle pattern */
    background: linear-gradient(135deg, #fef7f0 0%, #fff7ed 25%, #f0f9ff 75%, #e0f2fe 100%),
                var(--pattern-overlay);
    background-attachment: fixed;
    color: var(--gray-900);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Control Panels */
.control-panel {
    /* @tweakable Indian-inspired panel styling with warm gradient background */
    background: var(--panel-bg);
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 8px 32px rgba(249, 115, 22, 0.15), 0 4px 16px rgba(14, 165, 233, 0.1);
    transition: all var(--animation-normal) ease;
}

.control-panel::before {
    /* @tweakable subtle border gradient for Indian aesthetic */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-xl);
    padding: 2px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500), var(--accent-500));
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: destination-out;
    z-index: -1;
}

.control-panel:hover {
    /* @tweakable enhanced hover effect with Indian-inspired glow */
    box-shadow: 0 12px 48px rgba(249, 115, 22, 0.15), 0 8px 24px rgba(14, 165, 233, 0.1);
    transform: translateY(-4px);
}

.section-title {
    font-size: 1.125rem;
    font-weight: 700;
    /* @tweakable warm title color inspired by traditional Indian text */
    color: var(--gray-800);
    margin-bottom: 1rem;
    padding-bottom: 0.375rem;
    /* @tweakable decorative underline with gradient */
    border-bottom: 3px solid;
    border-image: linear-gradient(90deg, var(--primary-500), var(--secondary-500)) 1;
    position: relative;
}

.section-title::after {
    /* @tweakable decorative accent dot */
    content: '•';
    position: absolute;
    right: 0;
    bottom: -0.5rem;
    color: var(--accent-500);
    font-size: 1.5rem;
}

/* Buttons */
.play-button {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    /* @tweakable Indian-inspired play button gradient */
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600), var(--accent-500));
    color: white;
    border: 3px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all var(--animation-normal) ease;
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.3), 0 0 0 0 rgba(249, 115, 22, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.play-button::before {
    /* @tweakable subtle pattern overlay for cultural touch */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.2) 0%, transparent 60%);
    border-radius: 50%;
}

.play-button:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(249, 115, 22, 0.4), 0 0 0 8px rgba(249, 115, 22, 0.1);
}

.play-button:active {
    transform: scale(0.95);
}

/* @tweakable loading state style for the play button during initialization */
.play-button.loading {
    cursor: wait;
    background: linear-gradient(135deg, var(--gray-400), var(--gray-500));
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.play-button.playing {
    /* @tweakable playing state with warm secondary colors */
    background: linear-gradient(135deg, var(--secondary-500), var(--secondary-600), var(--primary-500));
    animation: pulse var(--pulse-duration) infinite;
    box-shadow: 0 8px 24px rgba(14, 165, 233, 0.3), 0 0 0 0 rgba(14, 165, 233, 0.4);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.btn-secondary {
    /* @tweakable secondary button with warm gradient */
    background: linear-gradient(135deg, var(--gray-100), var(--gray-50));
    color: var(--gray-700);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-200);
    cursor: pointer;
    transition: all var(--animation-fast) ease;
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    /* @tweakable subtle shimmer effect */
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(249, 115, 22, 0.1), transparent);
    transition: left var(--animation-normal) ease;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    border-color: var(--primary-300);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.15);
}

.btn-secondary:hover::before {
    left: 100%;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-secondary.active {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-color: var(--primary-600);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}

.btn-secondary.recording {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    border-color: #dc2626;
    animation: recordingPulse 1s infinite;
}

@keyframes recordingPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.button-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.5rem;
    /* @tweakable warm button group background */
    background: linear-gradient(135deg, var(--gray-100), var(--primary-50));
    padding: 0.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--primary-200);
}

.btn-group {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--gray-600);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--animation-fast) ease;
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
    /* @tweakable z-index to ensure text appears above background gradient */
    z-index: 1;
}

.btn-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    opacity: 0;
    transition: opacity var(--animation-fast) ease;
    border-radius: var(--radius-sm);
    /* @tweakable ensure background gradient stays behind text */
    z-index: -1;
}

.btn-group:hover {
    /* @tweakable enhanced hover with warm colors */
    background: linear-gradient(135deg, var(--primary-100), var(--secondary-100));
    color: var(--gray-800);
    transform: translateY(-1px);
}

.btn-group.active {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    /* @tweakable high contrast white text color for active buttons */
    color: white;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
    transform: translateY(-1px);
    /* @tweakable text shadow to ensure readability over gradient background */
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    /* @tweakable ensure active button text is positioned above all backgrounds */
    position: relative;
    z-index: 2;
}

.btn-group.active::before {
    opacity: 1;
}

/* Tempo Display */
.tempo-display-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.tempo-display {
    text-align: center;
    /* @tweakable warm tempo display background */
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    padding: 0.75rem;
    min-width: 100px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--primary-200);
    position: relative;
    overflow: hidden;
}

.tempo-display::before {
    /* @tweakable subtle decorative pattern */
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.05) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.tempo-number {
    font-size: 2rem;
    font-weight: 800;
    /* @tweakable vibrant tempo number color */
    color: var(--primary-600);
    display: block;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    position: relative;
    z-index: 1;
}

.tempo-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tap-tempo-btn {
    padding: 0.25rem 0.75rem;
    /* @tweakable warm tap tempo button */
    background: linear-gradient(135deg, var(--primary-200), var(--accent-500));
    color: var(--primary-800);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    transition: all var(--animation-fast) ease;
}

.tap-tempo-btn:hover {
    background: linear-gradient(135deg, var(--primary-300), var(--accent-600));
    transform: scale(1.05);
}

.tap-tempo-btn:active {
    transform: scale(0.95);
}

/* @tweakable master controls and audio settings layout */
.master-audio-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* @tweakable new master controls grid layout */
.master-controls-grid {
    display: grid;
    /* @tweakable number of columns in the master controls grid */
    grid-template-columns: repeat(var(--master-grid-columns, 2), 1fr);
    gap: 1.5rem;
    align-items: center;
    border-bottom: 1px solid var(--primary-200);
    padding-bottom: 1.5rem;
    margin-bottom: 1rem;
}

.playback-controls-container {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.master-sliders-container {
    display: grid;
    /* @tweakable number of columns for master audio sliders */
    grid-template-columns: repeat(var(--master-slider-columns, 3), 1fr);
    gap: 1rem;
    width: 100%;
    justify-content: center;
}

/* @tweakable new practice tools layout */
.practice-tools {
    background: linear-gradient(135deg, var(--secondary-50), var(--primary-50));
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--secondary-200);
}

.practice-tools .practice-features-grid {
     /* @tweakable number of columns for practice tool controls */
    grid-template-columns: repeat(var(--practice-grid-columns, 5), 1fr);
}

/* @tweakable new tanpura controls layout */
.tanpura-controls {
    border-top: 1px solid var(--primary-200);
    padding-top: 1rem;
    margin-top: 1rem;
}

.subsection-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 1rem;
}

.tanpura-grid {
    display: grid;
    /* @tweakable number of columns for tanpura controls */
    grid-template-columns: repeat(var(--tanpura-grid-columns, 4), 1fr);
    gap: 1.5rem;
    align-items: center;
}

.tanpura-volume-control {
    /* @tweakable column span for the tanpura volume control */
    grid-column: span var(--tanpura-volume-span, 2);
}

.tanpura-volume-control .slider {
    width: 100%;
}

.drone-type-control {
    grid-column: span 2;
}

.drone-type-control .button-group {
    grid-template-columns: 1fr 1fr;
}

/* @tweakable horizontal layout for audio sliders in master controls */
.audio-sliders-horizontal {
    display: grid;
    grid-template-columns: var(--audio-sliders-columns);
    gap: 1rem;
    align-items: start;
}

.audio-slider-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.audio-slider-item .slider-label {
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    white-space: nowrap;
}

.audio-slider-item .slider {
    width: var(--slider-width);
}

/* @tweakable tempo slider positioning */
.tempo-slider-container {
    width: 100%;
    margin-top: 0.75rem;
    margin-bottom: 0.5rem;
}

.tempo-slider-container .slider {
    width: 100%;
}

/* Sliders */
.slider-container {
    margin-bottom: 0.75rem;
}

.slider-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.375rem;
}

.slider {
    -webkit-appearance: none;
    width: var(--slider-width);
    height: 4px;
    border-radius: 2px;
    background: var(--gray-200);
    outline: none;
    transition: all var(--animation-fast) ease;
    cursor: pointer;
}

.slider:hover {
    background: var(--gray-300);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-500);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--animation-fast) ease;
}

.slider::-webkit-slider-thumb:hover {
    background: var(--primary-600);
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-500);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

/* @tweakable slider track thickness for better visual feedback */
.slider::-webkit-slider-track {
    background: var(--gray-200);
    border-radius: 2px;
}

.slider::-moz-range-track {
    background: var(--gray-200);
    border-radius: 2px;
}

.slider-value-display {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

/* Form Elements */
.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: white;
    color: var(--gray-900);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--animation-fast) ease;
}

.select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.select:hover {
    border-color: var(--gray-400);
}

.tala-controls {
    animation: fadeIn var(--animation-normal) ease;
}

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

/* Tala Display */
.tala-name {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.tala-info {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0;
}

/* Beat Visualizer */
.beat-visualizer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    /* @tweakable warm beat visualizer background with pattern */
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    border-radius: var(--radius-lg);
    border: 2px solid var(--primary-200);
    position: relative;
    overflow: hidden;
}

.beat-visualizer::before {
    /* @tweakable decorative background pattern */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(249, 115, 22, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.1) 0%, transparent 40%);
    z-index: 0;
}

.beat-indicator {
    width: var(--beat-indicator-size);
    height: var(--beat-indicator-size);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--gray-600);
    /* @tweakable Indian-inspired beat indicator styling */
    background: linear-gradient(135deg, white, var(--primary-50));
    border: 3px solid var(--primary-300);
    transition: all var(--animation-fast) ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.1);
}

.beat-indicator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* @tweakable vibrant active state gradient */
    background: linear-gradient(135deg, var(--secondary-400), var(--primary-500), var(--accent-500));
    transform: scale(0);
    transition: transform var(--animation-fast) ease;
    border-radius: 50%;
}

.beat-indicator.active::before {
    transform: scale(1);
}

.beat-indicator.active {
    color: white;
    border-color: var(--secondary-500);
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.4), 0 0 0 4px rgba(249, 115, 22, 0.1);
    transform: scale(1.15);
}

.beat-indicator.active span {
    position: relative;
    z-index: 1;
}

/* @tweakable playhead indicator style for tracking current beat in the grid */
.grid-cell.playhead {
    background-color: rgba(249, 115, 22, 0.15);
    box-shadow: inset 0 0 0 1px var(--primary-400);
    transition: none; /* Immediate feedback for playhead */
}

/* Sequencer Grid */
.sequencer-wrapper {
    /* @tweakable warm sequencer background */
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    border-radius: var(--radius-lg);
    padding: 0.75rem;
    border: 2px solid var(--primary-200);
    overflow-x: auto;
    position: relative;
}

.sequencer-wrapper::before {
    /* @tweakable subtle pattern overlay */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, rgba(249, 115, 22, 0.02) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(14, 165, 233, 0.02) 25%, transparent 25%);
    background-size: 20px 20px;
    z-index: 0;
    border-radius: var(--radius-lg);
}

.sequencer-grid {
    min-width: 600px;
}

.sequencer-grid table {
    width: 100%;
    border-collapse: collapse;
}

.sequencer-grid th {
    padding: 0.5rem;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    /* @tweakable warm table header background */
    background: linear-gradient(135deg, var(--primary-100), var(--secondary-100));
    border: 1px solid var(--primary-300);
}

.instrument-label-cell {
    position: sticky;
    left: 0;
    /* @tweakable warm instrument label background */
    background: linear-gradient(135deg, white, var(--primary-50));
    z-index: 10;
    padding: 0.5rem;
    min-width: 220px;
    border-right: 3px solid var(--primary-400);
}

.instrument-label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.grid-cell {
    width: var(--grid-cell-size);
    height: var(--grid-cell-size);
    border: 1px solid var(--primary-300);
    cursor: pointer;
    transition: all var(--animation-fast) ease;
    /* @tweakable warm grid cell background */
    background: linear-gradient(135deg, white, var(--primary-50));
    position: relative;
    overflow: hidden;
}

.grid-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* @tweakable vibrant active cell gradient */
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-500), var(--accent-500));
    transform: scale(0);
    transition: transform var(--animation-fast) ease;
    border-radius: 50%;
}

.grid-cell:hover {
    background: linear-gradient(135deg, var(--primary-100), var(--secondary-100));
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.2);
}

.grid-cell.active::before {
    transform: scale(1);
}

.grid-cell.active {
    /* @tweakable active cell styling with warm gradient */
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    border-color: var(--primary-600);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}

.grid-cell.playing {
    /* @tweakable playing cell with enhanced glow */
    background: linear-gradient(135deg, var(--accent-500), var(--primary-500)) !important;
    border-color: var(--accent-600) !important;
    transform: scale(1.15);
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.5), 0 0 0 4px rgba(245, 158, 11, 0.2) !important;
    z-index: 5;
}

/* Tweaks Panel Styles */
.tweaks-section {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--gray-200);
}

.tweaks-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.75rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--gray-300);
}

.tweaks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.tweak-control {
    background: white;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}

.tweak-control-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    display: block;
}

.tweak-control-description {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.tweak-slider {
    width: 100%;
    margin: 0.5rem 0;
}

.tweak-color-input {
    width: 100%;
    height: 40px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-300);
    cursor: pointer;
}

.tweak-select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    background: white;
    font-size: 0.875rem;
}

.tweak-number-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.tweak-reset-btn {
    background: var(--secondary-500);
    color: white;
    padding: 0.25rem 0.75rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: all var(--animation-fast) ease;
}

.tweak-reset-btn:hover {
    background: var(--secondary-600);
}

/* @tweakable translation button styling with Indian-inspired design */
#translateBtn {
    /* @tweakable enhanced styling for translation toggle with cultural elements */
    background: linear-gradient(135deg, var(--accent-500), var(--primary-500));
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

#translateBtn::before {
    /* @tweakable subtle pattern overlay for cultural authenticity */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.1) 50%, rgba(255, 255, 255, 0.1) 75%, transparent 75%);
    background-size: 8px 8px;
    opacity: 0;
    transition: opacity var(--animation-fast) ease;
}

#translateBtn:hover {
    /* @tweakable enhanced hover effect for translation button */
    background: linear-gradient(135deg, var(--accent-600), var(--primary-600));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
}

#translateBtn:hover::before {
    opacity: 1;
}

/* @tweakable Hindi text styling for proper rendering */
#translateBtnText {
    font-weight: 600;
    font-size: 0.875rem;
    /* @tweakable ensure proper Hindi font rendering if available */
    font-family: 'Poppins', 'Noto Sans Devanagari', 'Arial Unicode MS', sans-serif;
}

/* @tweakable language-specific styling adjustments */
[lang="hi-IN"] {
    /* @tweakable slightly increased line height for Hindi text */
    line-height: 1.7;
}

[lang="hi-IN"] .section-title,
[lang="hi-IN"] .tala-name {
    /* @tweakable enhanced typography for Hindi headings */
    font-weight: 700;
    letter-spacing: 0.025em;
}

[lang="hi-IN"] .form-label,
[lang="hi-IN"] .slider-label {
    /* @tweakable improved readability for Hindi labels */
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* @tweakable animation for language transition */
.language-transition {
    transition: all var(--animation-normal) ease;
    opacity: 0.7;
}

.language-transition.complete {
    opacity: 1;
}

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 50;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity var(--animation-normal) ease;
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
}

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 4xl;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--animation-normal) ease;
}

.modal.show .modal-content {
    transform: scale(1);
}

/* @tweakable Style for the audio unlock overlay. */
#audioUnlockOverlay {
    background-color: rgba(2, 6, 23, 0.8); /* slate-900 with opacity */
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.modal-close {
    width: 2rem;
    height: 2rem;
    border: none;
    background: none;
    color: var(--gray-500);
    cursor: pointer;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--animation-fast) ease;
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    flex: 1;
    overflow-y: auto;
}

/* Tabs */
.tab-bar {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.tab-button {
    flex: 1;
    padding: 1rem;
    border: none;
    background: none;
    color: var(--gray-600);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--animation-fast) ease;
    border-bottom: 2px solid transparent;
    position: relative;
}

.tab-button:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.tab-button.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-500);
    background: white;
}

.tab-content-area {
    padding: 1.5rem;
}

.tab-content {
    display: none;
    animation: fadeIn var(--animation-normal) ease;
}

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

/* Effects Panel */
.effects-container {
    margin-top: 0.75rem;
}

.effects-grid {
    display: grid;
    /* @tweakable increased grid columns to accommodate new instruments */
    grid-template-columns: var(--effects-grid-columns);
    gap: 1rem;
    /* @tweakable warm effects grid background */
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    border-radius: var(--radius-md);
    padding: 1rem;
    border: 2px solid var(--primary-200);
}

.effects-instrument-section {
    /* @tweakable warm effects section styling */
    background: linear-gradient(135deg, white, var(--primary-50));
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    border: 2px solid var(--primary-300);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.1);
}

.effects-instrument-section::before {
    /* @tweakable subtle decorative accent */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500), var(--accent-500));
}

.effects-instrument-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
    text-align: center;
    border-bottom: 1px solid var(--primary-300);
    padding-bottom: 0.25rem;
    padding-top: 0.25rem;
}

.effects-controls-compact {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.effects-control-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.effects-control-row .slider-label {
    font-size: 0.75rem;
    margin-bottom: 0;
    min-width: 40px;
    flex-shrink: 0;
}

.effect-accordion-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    background: white;
    overflow: hidden;
}

.effect-accordion-header {
    padding: 0.5rem 0.75rem;
    background: var(--gray-100);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all var(--animation-fast) ease;
}

.effect-accordion-header:hover {
    background: var(--gray-200);
}

.effect-accordion-header.active {
    background: var(--primary-100);
    color: var(--primary-700);
}

.effect-accordion-content {
    padding: 0.75rem;
    display: none;
    border-top: 1px solid var(--gray-200);
}

.effect-accordion-content.active {
    display: block;
}

.effect-accordion-chevron {
    width: 1rem;
    height: 1rem;
    transition: transform var(--animation-fast) ease;
}

.effect-accordion-header.active .effect-accordion-chevron {
    transform: rotate(180deg);
}

.effect-controls-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

/* @tweakable practice features styling for enhanced learning experience */
.practice-features-container {
    background: linear-gradient(135deg, var(--secondary-50), var(--primary-50));
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--secondary-200);
}

.practice-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    align-items: end;
}

.practice-feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.practice-feature-item .form-label {
    font-size: 0.75rem;
    margin-bottom: 0.375rem;
    white-space: nowrap;
}

.practice-feature-item .select {
    font-size: 0.8125rem;
    padding: 0.375rem 0.5rem;
}

/* @tweakable traditional notation display for educational value */
.traditional-notation {
    font-family: 'Courier New', monospace;
    background: linear-gradient(135deg, var(--gray-50), var(--primary-50));
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--primary-200);
    margin-top: 0.5rem;
}

.notation-label {
    font-size: 0.75rem;
    color: var(--gray-600);
    font-weight: 500;
    margin-right: 0.5rem;
}

.notation-symbols {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-700);
    letter-spacing: 0.25em;
}

/* @tweakable practice info panel styling */
.practice-info-panel {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
}

.practice-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--gray-50), var(--secondary-50));
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--secondary-200);
    min-width: 120px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
}

.info-label {
    color: var(--gray-600);
    font-weight: 500;
}

.info-value {
    color: var(--primary-700);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* @tweakable learning mode overlay styling */
.learning-overlay {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: linear-gradient(135deg, var(--accent-500), var(--primary-500));
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    z-index: 20;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.learning-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.learning-text {
    color: rgba(255, 255, 255, 0.9);
}

.learning-preview {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: monospace;
}

/* @tweakable styles for instrument controls integrated into the sequencer grid */
.instrument-grid-controls {
    /* @tweakable layout for instrument label and actions (volume, mute, solo) */
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.instrument-actions {
    /* @tweakable container for volume slider and mute/solo buttons */
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.instrument-grid-controls .inst-volume {
    /* @tweakable width of the volume slider in the grid */
    width: 60px;
}

.btn-grid-action {
    /* @tweakable base style for Mute and Solo buttons in the grid */
    width: 1.5rem;
    height: 1.5rem;
    border: none;
    background: var(--gray-200);
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--animation-fast) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
}

.btn-grid-action.btn-mute:hover {
    /* @tweakable hover state color for mute button */
    background: #fb7185; /* red-400 */
    color: white;
}

.btn-grid-action.btn-solo:hover {
    /* @tweakable hover state color for solo button */
    background: #facc15; /* yellow-400 */
    color: white;
}

.btn-grid-action.btn-mute.active {
    /* @tweakable active state color for mute button */
    background: #ef4444; /* red-500 */
    color: white;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.3);
}

.btn-grid-action.btn-solo.active {
    /* @tweakable active state color for solo button */
    background: #f59e0b; /* amber-500 */
    color: white;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
}

/* @tweakable traditional patterns modal styling */
.traditional-patterns-content {
    padding: 1rem;
}

.patterns-tabs {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 1rem;
}

.patterns-tab-button {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    background: none;
    color: var(--gray-600);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--animation-fast) ease;
    border-bottom: 2px solid transparent;
}

.patterns-tab-button:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.patterns-tab-button.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-500);
    background: var(--primary-50);
}

.traditional-patterns-grid {
    display: grid;
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
}

.traditional-pattern-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: all var(--animation-fast) ease;
}

.traditional-pattern-item:hover {
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    border-color: var(--primary-300);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.15);
}

.traditional-pattern-info {
    flex: 1;
}

.traditional-pattern-name {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.traditional-pattern-description {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.125rem;
}

.traditional-pattern-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.pattern-tag {
    background: var(--primary-100);
    color: var(--primary-800);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

/* @tweakable practice log modal styling */
.practice-log-content {
    padding: 1rem;
}

.practice-stats-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    padding: 1rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--primary-200);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-700);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

.practice-log-entries {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.log-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: white;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    border: 1px solid var(--gray-200);
}

.log-entry-info {
    flex: 1;
}

.log-entry-tala {
    font-weight: 600;
    color: var(--gray-900);
}

.log-entry-duration {
    font-size: 0.875rem;
    color: var(--primary-600);
    font-weight: 500;
}

.log-entry-date {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* @tweakable responsive adjustments for enhanced features */
@media (max-width: 768px) {
    .practice-features-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .practice-info-panel {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .instrument-control-header,
    .instrument-control-row {
        grid-template-columns: 1fr auto auto;
        gap: 0.75rem;
    }
    
    .traditional-pattern-item {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
}

/* @tweakable visual feedback for touch interactions */
@media (hover: none) and (pointer: coarse) {
    .grid-cell:active {
        transform: scale(0.95);
        background: linear-gradient(135deg, var(--accent-400), var(--primary-400)) !important;
    }
    
    .play-button:active {
        transform: scale(0.95);
    }
    
    .btn-secondary:active {
        transform: scale(0.98);
    }
}

/* @tweakable accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    .recordingPulse {
        animation: none;
    }
    
    .pattern-item:hover {
        transform: none;
    }
}

/* @tweakable focus visibility for keyboard navigation */
.btn-secondary:focus,
.play-button:focus,
.grid-cell:focus,
.pattern-item:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

@media (max-width: 1536px) {
    :root {
        /* @tweakable responsive columns for master sliders on large screens */
        --master-slider-columns: 3;
        /* @tweakable responsive columns for tanpura grid on large screens */
        --tanpura-grid-columns: 4;
    }
    .effect-controls-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* @tweakable responsive layout for expanded instrument set */
    .effects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1280px) {
    .effect-controls-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .control-panel {
        padding: 0.875rem;
    }
    
    .master-audio-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .master-controls-column {
        order: 1;
    }
    
    .audio-settings-column {
        order: 2;
    }
    
    /* @tweakable responsive stacking for audio sliders */
    .audio-sliders-horizontal {
        grid-template-columns: var(--audio-sliders-columns);
        gap: 0.75rem;
    }
    
    /* @tweakable responsive layout for expanded instrument set */
    .effects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .play-button {
        width: 3.5rem;
        height: 3.5rem;
    }
    
    .tempo-number {
        font-size: 1.75rem;
    }
    
    .beat-indicator {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.6875rem;
    }
    
    .grid-cell {
        width: 1.75rem;
        height: 1.75rem;
    }
    
    .master-audio-container {
        gap: 0.75rem;
    }
    
    .tempo-display-container {
        margin-left: 0.5rem;
    }
    
    /* @tweakable mobile layout for audio sliders */
    .audio-sliders-horizontal {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .audio-slider-item .slider {
        width: 120px;
    }
    
    /* @tweakable mobile layout for expanded instrument set */
    .effects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .effects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .master-controls-grid {
        grid-template-columns: 1fr;
    }
     .playback-controls-container {
        justify-content: start;
    }
}

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