:root {
            --bg-dark: #020b08;
            --bg-card: rgba(5, 18, 14, 0.70);
            --bg-card-hover: rgba(8, 26, 20, 0.82);
            --bg-input: rgba(6, 20, 15, 0.70);
            --border-color: rgba(0, 255, 170, 0.28);
            --border-highlight: #00ffaa;
            
            --primary: #00ffaa;
            --primary-bg: rgba(6, 32, 24, 0.85);
            --primary-hover: rgba(10, 48, 36, 0.95);
            --primary-glow: rgba(0, 255, 170, 0.40);
            
            --accent-fire: #00ffaa;
            --accent-ember: #10b981;
            --accent-gold: #34d399;
            --accent-red: #ef4444;
            --accent-cyan: #00ffaa;
            
            --text-main: #00ffaa;
            --text-muted: #a7f3d0;
            --text-dim: #6ee7b7;
            
            --font-main: 'Inter', system-ui, -apple-system, sans-serif;
            --font-heading: 'Cinzel', 'Outfit', serif;
            --font-mono: 'JetBrains Mono', monospace;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        #titanBgCanvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            z-index: -2;
            pointer-events: none;
        }

        body {
            font-family: var(--font-main);
            background-color: #030202;
            color: var(--text-main);
            min-height: 100vh;
            line-height: 1.6;
            padding: 0;
            overflow-x: hidden;
        }

        /* Layout Structure */
        .app-header {
            border-bottom: 1px solid var(--border-color);
            background: rgba(3, 2, 2, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 1rem 2rem;
        }

        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #18181b;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .logo-icon svg {
            width: 22px;
            height: 22px;
            fill: #ffffff;
        }

        .logo-text h1 {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #00ffaa;
        }

        .logo-badge {
            font-size: 0.68rem;
            padding: 2px 8px;
            border-radius: 6px;
            background: #18181b;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            text-transform: uppercase;
            font-weight: 600;
            letter-spacing: 0.05em;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .audio-status-pill {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 20px;
            background: #09090b;
            border: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--text-dim);
            transition: all 0.3s ease;
        }

        .status-dot.active {
            background: var(--accent-emerald);
            box-shadow: 0 0 10px var(--accent-emerald);
        }

        .container {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 1.5rem;
        }

        .app-grid {
            display: grid;
            grid-template-columns: 420px 1fr;
            gap: 1.5rem;
        }

        @media (max-width: 1024px) {
            .app-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Card Component */
        .card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.7);
            transition: border-color 0.25s, background 0.25s;
        }

        .card:hover {
            border-color: var(--border-highlight);
            background: var(--bg-card-hover);
        }

        .card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.25rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px solid var(--border-color);
        }

        .card-title {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-main);
        }

        /* Visualizer Panel */
        .visualizer-container {
            position: relative;
            width: 100%;
            height: 180px;
            background: #000000;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            margin-bottom: 1.25rem;
        }

        canvas#visCanvas {
            width: 100%;
            height: 100%;
            display: block;
        }

        .vis-overlay {
            position: absolute;
            top: 10px;
            right: 12px;
            display: flex;
            gap: 6px;
        }

        .vis-mode-btn {
            background: rgba(6, 20, 15, 0.85);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.72rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }

        .vis-mode-btn.active {
            background: rgba(0, 255, 170, 0.18);
            color: #00ffaa;
            border-color: #00ffaa;
        }

        /* Master Controls */
        .master-controls {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .btn-main-play {
            width: 100%;
            padding: 1.1rem;
            border-radius: 12px;
            border: 1px solid #00ffaa;
            background: linear-gradient(135deg, #052e16, #064e3b);
            color: #00ffaa;
            font-family: 'Cinzel', var(--font-heading);
            font-weight: 800;
            font-size: 1.05rem;
            letter-spacing: 0.05em;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            box-shadow: 0 4px 20px rgba(0, 255, 170, 0.35);
            transition: all 0.25s ease;
        }

        .btn-main-play:hover {
            background: linear-gradient(135deg, #059669, #10b981);
            border-color: #34d399;
            color: #00ffaa;
            box-shadow: 0 6px 25px rgba(0, 255, 170, 0.6);
            transform: translateY(-2px);
        }

        .btn-main-play.playing {
            background: linear-gradient(135deg, #052e16, #047857);
            border-color: #00ffaa;
            color: #00ffaa;
        }

        .btn-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
        }

        .btn-secondary {
            padding: 0.8rem;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background: #121215;
            color: var(--text-main);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            transition: all 0.2s;
        }

        .btn-secondary:hover {
            background: #18181b;
            border-color: var(--border-highlight);
        }

        .btn-export {
            background: #09261e;
            border: 1px solid rgba(16, 185, 129, 0.4);
            color: #34d399;
        }

        .btn-export:hover {
            background: #0d382c;
            color: white;
        }

        /* Controls Form Styling */
        .control-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }

        .control-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-muted);
        }

        .control-val {
            font-family: var(--font-mono);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.85rem;
        }

        .input-text, .select-input {
            width: 100%;
            background: var(--bg-input);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 0.75rem 1rem;
            color: var(--text-main);
            font-family: var(--font-mono);
            font-size: 0.92rem;
            outline: none;
            transition: all 0.2s;
        }

        .input-text:focus, .select-input:focus {
            border-color: var(--border-highlight);
            background: #18181b;
        }

        .slider-input {
            width: 100%;
            height: 5px;
            -webkit-appearance: none;
            appearance: none;
            background: #27272a;
            border-radius: 3px;
            outline: none;
        }

        .slider-input::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: #ffffff;
            cursor: pointer;
            transition: transform 0.1s;
        }

        .slider-input::-webkit-slider-thumb:hover {
            transform: scale(1.25);
            background: var(--accent-cyan);
        }

        /* Navigation Tabs */
        .tabs-nav {
            display: flex;
            gap: 8px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 0.75rem;
            margin-bottom: 1.5rem;
            overflow-x: auto;
            scrollbar-width: none;
        }

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

        .tab-btn {
            background: #09090b;
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            padding: 0.65rem 1.1rem;
            border-radius: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s;
        }

        .tab-btn:hover {
            color: var(--text-main);
            background: #18181b;
        }

        .tab-btn.active {
            background: rgba(0, 255, 170, 0.15);
            color: #00ffaa;
            border-color: #00ffaa;
        }

        .tab-pane {
            display: none;
            animation: fadeIn 0.25s ease-in-out;
        }

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

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(4px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Preset Cards Grid */
        .preset-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 1rem;
        }

        .preset-card {
            background: #09090b;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1rem;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .preset-card:hover {
            border-color: var(--border-highlight);
            background: #121215;
            transform: translateY(-2px);
        }

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

        .preset-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .preset-tag {
            align-self: flex-start;
            font-size: 0.65rem;
            padding: 2px 6px;
            border-radius: 4px;
            background: #18181b;
            color: var(--accent-cyan);
            border: 1px solid var(--border-color);
            font-weight: 600;
        }

        /* ADSR Controls */
        .adsr-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }

        /* Oddball Trigger Monitor */
        .oddball-monitor {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: #000000;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1rem;
            margin-top: 1rem;
        }

        .trial-counter {
            font-family: var(--font-mono);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

        .stimulus-indicator {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--text-dim);
            transition: background 0.1s;
        }

        .stimulus-indicator.standard {
            background: var(--accent-emerald);
            box-shadow: 0 0 12px var(--accent-emerald);
        }

        .stimulus-indicator.deviant {
            background: var(--accent-pink);
            box-shadow: 0 0 15px var(--accent-pink);
        }

        /* Musical Note Badge */
        .note-display {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #18181b;
            border: 1px solid var(--border-color);
            padding: 4px 12px;
            border-radius: 8px;
            font-family: var(--font-mono);
            font-size: 0.88rem;
            color: var(--text-main);
        }

        /* SEO Documentation Content Section */
        .seo-section {
            margin-top: 4rem;
            border-top: 1px solid var(--border-color);
            padding-top: 3rem;
            color: var(--text-muted);
        }

        .seo-section h2 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            color: var(--text-main);
            margin: 1.75rem 0 0.75rem 0;
        }

        .seo-section h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            color: #00ffaa;
            margin: 1.25rem 0 0.5rem 0;
        }

        .seo-section p {
            margin-bottom: 1rem;
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .seo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }

        .seo-card {
            background: #09090b;
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 1.5rem;
        }

        footer {
            margin-top: 4rem;
            border-top: 1px solid var(--border-color);
            padding: 2rem 0;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-dim);
        }

        footer a {
            color: var(--text-main);
            text-decoration: underline;
        }

        /* Mode Switcher Buttons */
        .mode-switch-group {
            display: flex;
            background: #09090b;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 3px;
            gap: 4px;
        }

        .mode-switch-btn {
            background: transparent;
            border: none;
            color: var(--text-muted);
            padding: 6px 16px;
            border-radius: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .mode-switch-btn.active {
            background: rgba(0, 255, 170, 0.18);
            color: #00ffaa;
            border: 1px solid #00ffaa;
        }

        /* Mode Visibility Toggles */
        body.mode-simple .advanced-only {
            display: none !important;
        }

        body.mode-simple .tabs-nav {
            display: none !important;
        }

        body.mode-advanced .simple-presets {
            display: none !important;
        }

        /* Toast / Notification */
        .toast {
            position: fixed;
            bottom: 24px;
            right: 24px;
            background: #18181b;
            border: 1px solid var(--border-highlight);
            color: var(--text-main);
            padding: 12px 20px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.9);
            font-size: 0.88rem;
            z-index: 1000;
            transform: translateY(100px);
            opacity: 0;
            transition: all 0.3s ease;
        }

        .toast.show {
            transform: translateY(0);
            opacity: 1;
        }