* {
                margin: 0;
                padding: 0;
                box-sizing: border-box;
            }
            
            body {
                background: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
                color: #ffffff;
                font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
                min-height: 100vh;
                overflow-x: hidden;
            }
            
            .container {
                max-width: 1200px;
                margin: 0 auto;
                padding: 20px;
            }
            
            .header {
                text-align: center;
                margin-bottom: 40px;
                padding: 40px 0;
                background: rgba(255, 255, 255, 0.05);
                border-radius: 20px;
                backdrop-filter: blur(10px);
                border: 1px solid rgba(255, 255, 255, 0.1);
            }
            
            .header h1 {
                font-size: 3.5rem;
                font-weight: 700;
                background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
                background-size: 400% 400%;
                -webkit-background-clip: text;
                -webkit-text-fill-color: transparent;
                background-clip: text;
                animation: gradientShift 4s ease-in-out infinite;
                margin-bottom: 10px;
            }
            
            @keyframes gradientShift {
                0%, 100% { background-position: 0% 50%; }
                50% { background-position: 100% 50%; }
            }
            
            .header p {
                font-size: 1.2rem;
                opacity: 0.8;
                line-height: 1.6;
                max-width: 600px;
                margin: 0 auto;
            }
            
            .visualizer-container {
                background: rgba(0, 0, 0, 0.4);
                border-radius: 20px;
                padding: 30px;
                margin-bottom: 30px;
                border: 2px solid rgba(255, 255, 255, 0.1);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
                position: relative;
                overflow: hidden;
            }
            
            .visualizer-container::before {
                content: '';
                position: absolute;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: linear-gradient(45deg, rgba(255, 107, 107, 0.1), rgba(78, 205, 196, 0.1), rgba(69, 183, 209, 0.1));
                pointer-events: none;
                animation: pulseGlow 3s ease-in-out infinite;
            }
            
            @keyframes pulseGlow {
                0%, 100% { opacity: 0.3; }
                50% { opacity: 0.6; }
            }
            
            #akko {
                height: 600px;
                border-radius: 15px;
                overflow: hidden;
                position: relative;
                z-index: 1;
                border: 1px solid rgba(255, 255, 255, 0.2);
            }
            
            .controls-info {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 30px;
                margin-top: 30px;
            }
            
            .info-card {
                background: rgba(255, 255, 255, 0.05);
                padding: 25px;
                border-radius: 15px;
                border: 1px solid rgba(255, 255, 255, 0.1);
                backdrop-filter: blur(5px);
            }
            
            .info-card h3 {
                color: #4ecdc4;
                margin-bottom: 15px;
                font-size: 1.3rem;
            }
            
            .info-card ul {
                list-style: none;
                padding: 0;
            }
            
            .info-card li {
                padding: 8px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                opacity: 0.8;
            }
            
            .info-card li:last-child {
                border-bottom: none;
            }
            
            .feature-highlight {
                background: linear-gradient(135deg, rgba(255, 107, 107, 0.2), rgba(78, 205, 196, 0.2));
                padding: 20px;
                border-radius: 15px;
                margin: 30px 0;
                border: 1px solid rgba(255, 255, 255, 0.2);
                text-align: center;
            }
            
            .feature-highlight strong {
                color: #ff6b6b;
            }
            
            /* Responsive Design */
            @media (max-width: 768px) {
                .container {
                    padding: 15px;
                }
                
                .header h1 {
                    font-size: 2.5rem;
                }
                
                .controls-info {
                    grid-template-columns: 1fr;
                    gap: 20px;
                }
                
                #akko {
                    height: 400px;
                }
                
                .visualizer-container {
                    padding: 20px;
                }
            }
            
            /* Loading animation for when Akko is initializing */
            .loading {
                display: flex;
                justify-content: center;
                align-items: center;
                height: 200px;
                font-size: 1.2rem;
                opacity: 0.7;
            }
            
            .loading::after {
                content: '';
                width: 20px;
                height: 20px;
                border: 2px solid rgba(255, 255, 255, 0.3);
                border-top: 2px solid #4ecdc4;
                border-radius: 50%;
                animation: spin 1s linear infinite;
                margin-left: 10px;
            }
            
            @keyframes spin {
                0% { transform: rotate(0deg); }
                100% { transform: rotate(360deg); }
            }

            /* Epic Play Button Styles */
            .epic-play-button {
                position: absolute;
                top: 50%;
                left: 50%;
                transform: translate(-50%, -50%);
                width: 200px;
                height: 200px;
                border: none;
                border-radius: 50%;
                background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
                cursor: pointer;
                z-index: 100;
                overflow: hidden;
                transition: all 0.3s ease;
                box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
                animation: pulse 2s infinite;
            }

            .epic-play-button:hover {
                transform: translate(-50%, -50%) scale(1.1);
                box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
                animation: none;
            }

            .epic-play-button:active {
                transform: translate(-50%, -50%) scale(0.95);
            }

            .button-content {
                position: relative;
                width: 100%;
                height: 100%;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                color: white;
                z-index: 2;
            }

            .play-icon {
                position: relative;
                width: 60px;
                height: 60px;
                margin-bottom: 10px;
            }

            .triangle {
                width: 0;
                height: 0;
                border-left: 30px solid white;
                border-top: 20px solid transparent;
                border-bottom: 20px solid transparent;
                margin-left: 8px;
                filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
                animation: playPulse 1.5s ease-in-out infinite alternate;
            }

            .button-text {
                font-size: 14px;
                font-weight: bold;
                text-transform: uppercase;
                letter-spacing: 1px;
                text-shadow: 0 2px 4px rgba(0,0,0,0.3);
                margin-bottom: 10px;
            }

            .sound-waves {
                position: absolute;
                bottom: 20px;
                left: 50%;
                transform: translateX(-50%);
                display: flex;
                gap: 3px;
            }

            .wave {
                width: 3px;
                background: rgba(255, 255, 255, 0.8);
                border-radius: 2px;
                animation: waveAnimation 1.2s ease-in-out infinite;
            }

            .wave1 {
                height: 15px;
                animation-delay: 0s;
            }

            .wave2 {
                height: 25px;
                animation-delay: 0.1s;
            }

            .wave3 {
                height: 20px;
                animation-delay: 0.2s;
            }

            .wave4 {
                height: 18px;
                animation-delay: 0.3s;
            }

            .button-glow {
                position: absolute;
                top: -50%;
                left: -50%;
                width: 200%;
                height: 200%;
                background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
                opacity: 0;
                transition: opacity 0.3s ease;
                pointer-events: none;
            }

            .epic-play-button:hover .button-glow {
                opacity: 1;
                animation: rotate 3s linear infinite;
            }

            /* Play Button Animations */
            @keyframes pulse {
                0% {
                    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
                }
                50% {
                    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6), 0 0 0 10px rgba(102, 126, 234, 0.1);
                }
                100% {
                    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
                }
            }

            @keyframes playPulse {
                0% {
                    transform: scale(1);
                    opacity: 1;
                }
                100% {
                    transform: scale(1.1);
                    opacity: 0.8;
                }
            }

            @keyframes waveAnimation {
                0%, 100% {
                    transform: scaleY(1);
                    opacity: 0.7;
                }
                50% {
                    transform: scaleY(1.5);
                    opacity: 1;
                }
            }

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

            /* Responsive adjustments for play button */
            @media (max-width: 768px) {
                .epic-play-button {
                    width: 150px;
                    height: 150px;
                }
                
                .play-icon {
                    width: 45px;
                    height: 45px;
                }
                
                .triangle {
                    border-left: 22px solid white;
                    border-top: 15px solid transparent;
                    border-bottom: 15px solid transparent;
                    margin-left: 6px;
                }
                
                .button-text {
                    font-size: 12px;
                }
            }