/* ===================================
   SARGAM SHIKSHA - Indian Music Learning App
   Premium Dark Theme with Golden Accents
   =================================== */

/* CSS Custom Properties */
:root {
    /* Colors - Dark Theme with Indian Aesthetics */
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --bg-card: #1e1e1e;
    --bg-hover: #2a2a2a;
    
    /* Accent Colors - Saffron/Gold Gradient */
    --accent-primary: #ff9800;
    --accent-secondary: #ffc107;
    --accent-gradient: linear-gradient(135deg, #ff9800, #ffc107);
    --accent-glow: rgba(255, 152, 0, 0.3);
    
    /* Semantic Colors */
    --success: #4caf50;
    --success-glow: rgba(76, 175, 80, 0.3);
    --warning: #ff9800;
    --danger: #f44336;
    --danger-glow: rgba(244, 67, 54, 0.3);
    --info: #2196f3;
    --info-glow: rgba(33, 150, 243, 0.3);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #666666;
    
    /* Swara Colors */
    --swara-sa: #ff5722;
    --swara-re: #ff9800;
    --swara-ga: #ffc107;
    --swara-ma: #8bc34a;
    --swara-pa: #00bcd4;
    --swara-dha: #3f51b5;
    --swara-ni: #9c27b0;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Harmonium Theme */
    --harmonium-wood: #4e2a1e;
    --harmonium-wood-light: #6d3d2c;
    --harmonium-wood-dark: #331b14;
    --harmonium-brass: #d4af37;
    --harmonium-brass-light: #f1d374;
    --harmonium-brass-dark: #9b7e1c;
    --harmonium-brass-glow: rgba(212, 175, 55, 0.4);
    --harmonium-ivory: #fcf8f0;
    --harmonium-ebony: #1a1a1a;
    
    --harmonium-white-width: 60px;
    --harmonium-white-height: 200px;
    --harmonium-black-width: 40px;
    --harmonium-black-height: 130px;

    /* Typography */
    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 152, 0, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 193, 7, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

#app {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* ===================================
   HEADER
   =================================== */
.header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-icon {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.logo h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.logo-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 300;
}

/* ===================================
   NAVIGATION TABS
   =================================== */
.nav-tabs {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar {
    display: none;
}

.nav-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    flex: 1;
    min-width: 100px;
}

.nav-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-tab.active {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
}

.tab-icon {
    font-size: var(--font-size-xl);
}

.tab-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===================================
   MAIN CONTENT
   =================================== */
.main-content {
    min-height: 60vh;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    color: var(--text-secondary);
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--bg-hover);
}

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

.btn-danger {
    background: var(--danger);
    color: var(--text-primary);
}

.btn-danger:hover {
    box-shadow: 0 0 20px var(--danger-glow);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-icon {
    font-size: 1.2em;
}

.btn-back {
    background: transparent;
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
}

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

/* ===================================
   PITCH PRACTICE SECTION
   =================================== */
.target-note-selector {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.scale-selector-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--bg-hover);
    margin-bottom: var(--spacing-md);
}

.scale-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    cursor: pointer;
    outline: none;
}

.scale-select:focus {
    box-shadow: 0 0 5px var(--accent-glow);
}

.target-note-selector label {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.swara-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.swara-btn {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.swara-btn:hover {
    transform: scale(1.1);
}

.swara-btn.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px var(--accent-glow);
}

.swara-btn[data-swara="Sa"] { background: linear-gradient(135deg, var(--swara-sa), #ff7043); }
.swara-btn[data-swara="Re"] { background: linear-gradient(135deg, var(--swara-re), #ffb74d); }
.swara-btn[data-swara="Ga"] { background: linear-gradient(135deg, var(--swara-ga), #ffd54f); }
.swara-btn[data-swara="Ma"] { background: linear-gradient(135deg, var(--swara-ma), #aed581); }
.swara-btn[data-swara="Pa"] { background: linear-gradient(135deg, var(--swara-pa), #4dd0e1); }
.swara-btn[data-swara="Dha"] { background: linear-gradient(135deg, var(--swara-dha), #7986cb); }
.swara-btn[data-swara="Ni"] { background: linear-gradient(135deg, var(--swara-ni), #ba68c8); }

/* Pitch Visualizer */
.pitch-visualizer-container {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.pitch-meter {
    margin-bottom: var(--spacing-xl);
}

.pitch-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.current-frequency {
    font-size: var(--font-size-2xl);
    font-weight: 300;
    color: var(--text-secondary);
}

.current-swara {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pitch-indicator-container {
    margin-bottom: var(--spacing-lg);
}

.pitch-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.pitch-bar {
    position: relative;
    height: 40px;
    background: linear-gradient(90deg, 
        var(--info) 0%, 
        var(--info) 30%, 
        var(--success) 40%, 
        var(--success) 60%, 
        var(--danger) 70%, 
        var(--danger) 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.pitch-center-zone {
    position: absolute;
    left: 40%;
    width: 20%;
    height: 100%;
    border: 3px solid var(--text-primary);
    border-radius: var(--radius-md);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.pitch-marker {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 50px;
    background: var(--text-primary);
    border-radius: var(--radius-sm);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    transition: left 0.1s ease-out;
}

.pitch-feedback {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.feedback-arrow {
    font-size: var(--font-size-2xl);
}

.feedback-text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.feedback-text.correct {
    color: var(--success);
}

.feedback-text.high {
    color: var(--danger);
}

.feedback-text.low {
    color: var(--info);
}

/* Waveform Canvas */
.waveform-canvas {
    width: 100%;
    height: 150px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: block;
}

/* Pitch Controls */
.pitch-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Recording Section */
.recording-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-xl);
}

.recording-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-xl);
}

.recording-dot {
    width: 20px;
    height: 20px;
    background: var(--danger);
    border-radius: var(--radius-full);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

/* Playback Section */
.playback-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-xl);
}

.playback-section h3 {
    color: var(--accent-primary);
}

.playback-section audio {
    width: 100%;
    max-width: 400px;
}

/* ===================================
   HARMONIUM SECTION
   =================================== */
.harmonium-settings {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
    background: var(--bg-card);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--harmonium-wood-dark);
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.5);
}

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

.setting-group label {
    color: var(--harmonium-brass-light);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.setting-group input[type="range"] {
    width: 150px;
    accent-color: var(--harmonium-brass);
}

.setting-group select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--harmonium-wood-dark);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    outline: none;
}

.setting-group select:focus {
    border-color: var(--harmonium-brass);
}

.setting-group span {
    color: var(--text-secondary);
    font-family: monospace;
    min-width: 60px;
}

.harmonium-container {
    background: linear-gradient(135deg, var(--harmonium-wood) 0%, var(--harmonium-wood-dark) 100%);
    border: 8px solid var(--harmonium-wood-dark);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    box-shadow: 
        inset 0 0 30px rgba(0,0,0,0.8),
        0 10px 30px rgba(0,0,0,0.6);
    overflow-x: auto;
    position: relative;
}

/* Bellows pattern background */
.harmonium-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 15px;
    background: repeating-linear-gradient(
        90deg,
        var(--harmonium-wood-dark) 0px,
        var(--harmonium-wood-dark) 20px,
        var(--harmonium-wood-light) 20px,
        var(--harmonium-wood-light) 40px
    );
    opacity: 0.5;
    border-bottom: 2px solid var(--harmonium-brass);
}

.harmonium-keyboard {
    display: flex;
    justify-content: center;
    min-height: 220px;
    position: relative;
    padding: var(--spacing-xl) 0;
    margin: 0 auto;
    width: fit-content;
}

.harmonium-key {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    box-shadow: 0 4px 5px rgba(0,0,0,0.4);
}

.harmonium-key.white {
    width: var(--harmonium-white-width);
    height: var(--harmonium-white-height);
    background: linear-gradient(180deg, 
        #ffffff 0%, 
        var(--harmonium-ivory) 80%, 
        #e0d7c5 100%);
    border: 1px solid #c0b7a5;
    border-radius: 0 0 5px 5px;
    z-index: 1;
    margin: 0 1px;
}

.harmonium-key.white:hover {
    background: linear-gradient(180deg, #fff 0%, var(--harmonium-ivory) 100%);
}

.harmonium-key.white.active {
    background: linear-gradient(180deg, 
        var(--accent-secondary) 0%, 
        var(--accent-primary) 100%);
    transform: translateY(4px);
    box-shadow: 0 1px 2px rgba(0,0,0,0.6), 0 0 15px var(--accent-glow);
    border-color: var(--accent-primary);
}

.harmonium-key.black {
    width: var(--harmonium-black-width);
    height: var(--harmonium-black-height);
    background: linear-gradient(180deg, 
        #444 0%, 
        var(--harmonium-ebony) 20%, 
        #000 100%);
    border-radius: 0 0 4px 4px;
    position: absolute;
    z-index: 2;
    border: 1px solid #333;
    /* Margin-left will be set by JS or calculated */
    box-shadow: 2px 5px 8px rgba(0,0,0,0.7);
}

.harmonium-key.black:hover {
    background: linear-gradient(180deg, #555 0%, #222 100%);
}

.harmonium-key.black.active {
    background: linear-gradient(180deg, 
        var(--accent-primary) 0%, 
        var(--harmonium-wood-dark) 100%);
    transform: translateY(3px);
    box-shadow: 1px 2px 4px rgba(0,0,0,0.8), 0 0 10px var(--accent-glow);
    border-color: var(--accent-primary);
}

.key-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-align: center;
    pointer-events: none;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.harmonium-key:hover .key-label {
    opacity: 1;
}

.harmonium-key.white .key-label {
    color: #5d4037;
}

.harmonium-key.black .key-label {
    color: var(--harmonium-brass-light);
    margin-bottom: var(--spacing-xs);
}

.keyboard-hints {
    text-align: center;
    margin-top: var(--spacing-lg);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    padding: var(--spacing-md);
    background: rgba(0,0,0,0.3);
    border-radius: var(--radius-md);
}

.keyboard-hints kbd {
    display: inline-block;
    padding: 2px 8px;
    background: var(--harmonium-wood-dark);
    color: var(--harmonium-brass-light);
    border: 1px solid var(--harmonium-brass-dark);
    border-radius: var(--radius-sm);
    font-family: monospace;
    margin: 0 2px;
}

.current-note-display {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: linear-gradient(180deg, #333 0%, #111 100%);
    border: 4px solid var(--harmonium-brass-dark);
    border-radius: var(--radius-lg);
    position: relative;
    max-width: 300px;
    margin: 0 auto;
    box-shadow: 
        inset 0 0 15px rgba(0,0,0,1),
        0 5px 15px rgba(0,0,0,0.5);
}

.current-note-display::before {
    content: 'CURRENT SWARA';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--harmonium-brass-dark);
    color: #000;
    font-size: 0.7rem;
    font-weight: 800;
    padding: 2px 10px;
    border-radius: 4px;
    letter-spacing: 1px;
}

.note-name {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--harmonium-brass-light);
    text-shadow: 0 0 10px var(--harmonium-brass-glow);
}

.note-freq {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    align-self: center;
    font-family: monospace;
}

/* ===================================
   RAGA EXPLORER SECTION
   =================================== */
.raga-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.raga-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.raga-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.raga-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--accent-secondary);
}

.raga-card .raga-thaat {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.raga-card .raga-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Raga Detail View */
.raga-detail {
    animation: fadeIn 0.3s ease;
}

.raga-info {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.raga-info h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.raga-meta {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--bg-tertiary);
}

.meta-item {
    color: var(--text-secondary);
}

.meta-item strong {
    color: var(--accent-primary);
}

.raga-notes {
    margin-bottom: var(--spacing-lg);
}

.notes-group {
    display: flex;
    gap: var(--spacing-xl);
    color: var(--text-secondary);
}

.notes-group strong {
    color: var(--accent-secondary);
}

.raga-patterns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.pattern-group {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.pattern-group h4 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-sm);
}

.pattern-text {
    font-size: var(--font-size-lg);
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
}

.swara-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.swara-indicator {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-normal);
}

.swara-indicator.active {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.swara-indicator.inactive {
    opacity: 0.3;
}

/* ===================================
   TAAL SECTION
   =================================== */
.taal-selector {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.taal-selector select {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--bg-hover);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-lg);
}

.tempo-control {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.tempo-control input[type="range"] {
    width: 200px;
    accent-color: var(--accent-primary);
}

.taal-display {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.taal-beat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    min-width: 60px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.taal-beat.active {
    transform: scale(1.15);
    box-shadow: var(--shadow-glow);
}

.taal-beat.sam {
    border: 2px solid var(--accent-primary);
}

.taal-beat.sam.active {
    background: var(--accent-gradient);
    color: var(--bg-primary);
}

.taal-beat.khali {
    border: 2px dashed var(--text-muted);
}

.beat-number {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.beat-bol {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.beat-marker {
    font-size: var(--font-size-xs);
}

.taal-info {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.info-row {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    color: var(--text-secondary);
}

.info-row strong {
    color: var(--accent-primary);
}

.taal-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.taal-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

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

.sam-indicator, .khali-indicator, .tali-indicator {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
}

.sam-indicator {
    background: var(--accent-gradient);
}

.khali-indicator {
    border: 2px dashed var(--text-muted);
}

.tali-indicator {
    background: var(--bg-tertiary);
    border: 1px solid var(--text-muted);
}

/* ===================================
   ORNAMENTS SECTION
   =================================== */
.ornament-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.ornament-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.ornament-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-3px);
}

.ornament-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--accent-secondary);
}

.ornament-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

.ornament-visual {
    margin-bottom: var(--spacing-lg);
}

.ornament-visual canvas {
    width: 100%;
    height: 100px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    text-align: center;
    padding: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    color: var(--text-muted);
    border-top: 1px solid var(--bg-tertiary);
}

.footer-note {
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

/* ===================================
   MODAL
   =================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--bg-card);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    max-width: 400px;
    animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

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

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 2rem;
        --font-size-2xl: 1.5rem;
    }
    
    .nav-tabs {
        justify-content: flex-start;
    }
    
    .nav-tab {
        min-width: 80px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .tab-label {
        font-size: var(--font-size-xs);
    }
    
    .pitch-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-large {
        width: 100%;
    }
    
    .harmonium-settings {
        flex-direction: column;
        align-items: center;
    }
    
    .harmonium-key.white {
        width: 45px;
        height: 140px;
    }
    
    .harmonium-key.black {
        width: 30px;
        height: 90px;
        margin-left: -15px;
    }
    
    .taal-legend {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    #app {
        padding: var(--spacing-sm);
    }
    
    .section-header h2 {
        font-size: var(--font-size-xl);
    }
    
    .swara-btn {
        width: 45px;
        height: 45px;
        font-size: var(--font-size-base);
    }
    
    .harmonium-key.white {
        width: 35px;
        height: 120px;
    }
    
    .harmonium-key.black {
        width: 25px;
        height: 75px;
        margin-left: -12px;
    }
}