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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #0a0a0a;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
            position: relative;
            color: white;
        }

        .background-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, #1a1a2e, #16213e, #0f3460, #533483);
            background-size: 400% 400%;
            animation: gradientShift 20s ease infinite;
            z-index: -2;
        }

        .particles-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.5;
        }

        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        /* Custom Alert Modal System */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.95);
            backdrop-filter: blur(10px);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 10000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.5s ease;
            padding: 1rem;
        }

        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
            backdrop-filter: blur(20px);
            border: 2px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 2rem;
            max-width: 500px;
            width: 100%;
            text-align: center;
            transform: scale(0.7);
            transition: all 0.5s ease;
            box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
            max-height: 90vh;
            overflow-y: auto;
        }

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

        .modal-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: bounce 2s infinite;
        }

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

        .modal-title {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .modal-text {
            font-size: 1rem;
            margin-bottom: 1.5rem;
            opacity: 0.9;
            line-height: 1.6;
        }

        .modal-btn {
            padding: 0.8rem 1.5rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
            margin: 0.5rem;
            width: 100%;
            max-width: 200px;
        }

        .modal-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
        }

        .social-buttons {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }

        .social-btn {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1rem;
            color: white;
            border: none;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 0.85rem;
            font-weight: 500;
            min-width: 120px;
            justify-content: center;
        }

        .social-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        .social-btn.instagram { 
            background: linear-gradient(135deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
        }
        .social-btn.tiktok { 
            background: #000000;
            border: 2px solid #ff0050;
            color: white;
        }
        .social-btn.tiktok:hover {
            background: #ff0050;
        }
        .social-btn.facebook { 
            background: linear-gradient(135deg, #1877f2, #42a5f5);
        }
        .social-btn.website { 
            background: linear-gradient(135deg, #667eea, #764ba2);
        }

        header {
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(20px);
            padding: 1rem;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            z-index: 100;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .header-content {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-icon {
            width: 35px;
            height: 35px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); box-shadow: 0 0 20px rgba(102, 126, 234, 0.5); }
            50% { transform: scale(1.05); box-shadow: 0 0 30px rgba(102, 126, 234, 0.8); }
        }

        h1 {
            font-size: clamp(1.2rem, 4vw, 1.8rem);
            font-weight: 600;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .controls {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            flex-wrap: wrap;
            justify-content: center;
        }

        .file-input-wrapper {
            position: relative;
            overflow: hidden;
            display: inline-block;
        }

        .file-input-wrapper input[type=file] {
            position: absolute;
            left: -9999px;
        }

        .file-input-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.2rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
            font-size: clamp(0.8rem, 2vw, 0.9rem);
        }

        .file-input-label:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.2rem;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
            backdrop-filter: blur(10px);
            font-size: clamp(0.8rem, 2vw, 0.9rem);
        }

        .btn:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        .btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .btn.active {
            background: linear-gradient(135deg, #667eea, #764ba2);
            box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
        }

        .refresh-btn {
            background: linear-gradient(135deg, #43e97b, #38f9d7);
            color: white;
            border: none;
            padding: 0.6rem 1.2rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: clamp(0.8rem, 2vw, 0.9rem);
            box-shadow: 0 4px 15px rgba(67, 233, 123, 0.3);
        }

        .refresh-btn:hover {
            transform: translateY(-2px) rotate(180deg);
            box-shadow: 0 6px 20px rgba(67, 233, 123, 0.5);
        }

        .volume-control {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .volume-slider {
            width: clamp(60px, 10vw, 100px);
            height: 4px;
            -webkit-appearance: none;
            appearance: none;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 2px;
            outline: none;
        }

        .volume-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 16px;
            height: 16px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .volume-slider::-webkit-slider-thumb:hover {
            transform: scale(1.2);
            box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
        }

        main {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 1rem;
            position: relative;
            min-height: calc(100vh - 140px);
        }

        .visualizer-wrapper {
            width: 100%;
            max-width: 1400px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
        }

        .visualizer-container {
            width: 100%;
            height: clamp(180px, 35vh, 350px);
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        canvas {
            width: 100%;
            height: 100%;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            background: rgba(0, 0, 0, 0.5);
        }

        .visualization-modes {
            display: flex;
            gap: 0.5rem;
            background: rgba(0, 0, 0, 0.7);
            padding: 0.5rem;
            border-radius: 50px;
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            flex-wrap: wrap;
            justify-content: center;
            width: 100%;
            max-width: 500px;
        }

        .mode-btn {
            padding: 0.5rem 1rem;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border: none;
            border-radius: 25px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: clamp(0.7rem, 2vw, 0.9rem);
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex: 1;
            justify-content: center;
            min-width: 80px;
        }

        .mode-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .mode-btn.active {
            background: linear-gradient(135deg, #667eea, #764ba2);
            box-shadow: 0 0 15px rgba(102, 126, 234, 0.5);
        }

        .welcome-message {
            text-align: center;
            color: white;
            padding: 1.5rem;
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(20px);
            border-radius: 20px;
            max-width: 600px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            animation: fadeInUp 0.8s ease;
            margin-top: auto;
            width: 100%;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .welcome-message h2 {
            margin-bottom: 1rem;
            font-size: clamp(1.2rem, 4vw, 1.8rem);
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .welcome-message p {
            opacity: 0.9;
            line-height: 1.6;
            margin-bottom: 1rem;
            font-size: clamp(0.9rem, 2vw, 1rem);
        }

        .feature-icons {
            display: flex;
            justify-content: center;
            gap: clamp(0.5rem, 3vw, 1.5rem);
            margin-top: 1rem;
            flex-wrap: wrap;
        }

        .feature-icon {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.3rem;
            opacity: 0.8;
            transition: all 0.3s ease;
        }

        .feature-icon:hover {
            opacity: 1;
            transform: translateY(-5px);
        }

        .feature-icon i {
            font-size: clamp(1.2rem, 3vw, 1.8rem);
            color: #667eea;
        }

        .feature-icon span {
            font-size: clamp(0.6rem, 2vw, 0.8rem);
        }

        .track-info {
            position: absolute;
            bottom: 0.5rem;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(20px);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            color: white;
            display: none;
            align-items: center;
            gap: 0.5rem;
            animation: slideUp 0.5s ease;
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-size: clamp(0.7rem, 2vw, 0.8rem);
            max-width: 90%;
        }

        .track-info.active {
            display: flex;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateX(-50%) translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateX(-50%) translateY(0);
            }
        }

        .track-name {
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .time-display {
            font-size: 0.7rem;
            opacity: 0.8;
        }

        .settings-panel {
            position: fixed;
            bottom: 80px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.9);
            backdrop-filter: blur(20px);
            padding: 1.5rem;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: none;
            z-index: 1000;
            width: 90%;
            max-width: 350px;
        }

        .settings-panel.active {
            display: block;
        }

        .settings-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }

        .close-settings {
            background: none;
            border: none;
            color: white;
            font-size: 1.2rem;
            cursor: pointer;
            opacity: 0.7;
            transition: opacity 0.3s ease;
        }

        .close-settings:hover {
            opacity: 1;
        }

        .setting-item {
            margin-bottom: 1rem;
        }

        .setting-label {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            opacity: 0.8;
        }

        .color-presets {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        .color-preset {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .color-preset:hover {
            transform: scale(1.1);
        }

        .color-preset.active {
            border-color: white;
        }

        footer {
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(20px);
            padding: 1rem;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-content {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .copyright {
            opacity: 0.8;
            font-size: clamp(0.6rem, 2vw, 0.8rem);
        }

        .developer-credit {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #667eea;
            font-weight: 500;
            font-size: clamp(0.6rem, 2vw, 0.8rem);
        }

        .social-links {
            display: flex;
            gap: 1rem;
        }

        .social-links a {
            color: white;
            opacity: 0.8;
            transition: all 0.3s ease;
            font-size: clamp(0.8rem, 2vw, 1rem);
        }

        .social-links a:hover {
            opacity: 1;
            color: #667eea;
            transform: translateY(-2px);
        }

        .mobile-controls {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.9);
            backdrop-filter: blur(20px);
            padding: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 999;
        }

        .mobile-controls-content {
            display: flex;
            justify-content: space-around;
            align-items: center;
            gap: 0.5rem;
        }

        .mobile-btn {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.3rem;
            padding: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            color: white;
            text-decoration: none;
            transition: all 0.3s ease;
            min-width: 60px;
        }

        .mobile-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .mobile-btn i {
            font-size: 1.2rem;
        }

        .mobile-btn span {
            font-size: 0.7rem;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .header-content {
                justify-content: center;
                text-align: center;
            }

            .controls {
                justify-content: center;
                width: 100%;
            }

            .mobile-controls {
                display: block;
            }

            .visualizer-container {
                height: 200px;
                margin-bottom: 0.5rem;
            }

            .visualization-modes {
                padding: 0.4rem;
                gap: 0.3rem;
            }

            .mode-btn {
                padding: 0.4rem 0.8rem;
                font-size: 0.7rem;
                min-width: 70px;
            }

            .modal-content {
                padding: 1.5rem;
            }

            .modal-title {
                font-size: 1.3rem;
            }

            .social-buttons {
                flex-direction: column;
                align-items: center;
                gap: 0.8rem;
            }

            .social-btn {
                width: 100%;
                max-width: 200px;
            }
        }

        @media (max-width: 480px) {
            .feature-icons {
                gap: 0.5rem;
            }

            .welcome-message {
                padding: 1rem;
            }

            .visualizer-container {
                height: 180px;
            }

            .modal-icon {
                font-size: 2.5rem;
            }

            .modal-title {
                font-size: 1.2rem;
            }

            .modal-text {
                font-size: 0.9rem;
            }

            .visualization-modes {
                max-width: 100%;
            }

            .mode-btn {
                font-size: 0.65rem;
                padding: 0.3rem 0.6rem;
                min-width: 60px;
            }
        }