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

        body {
            text-align: center;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: white;
            overflow: hidden;
            padding: 10px;
        }

        .game-wrapper {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 20px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 600px;
            animation: fadeIn 0.5s ease-in-out;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            letter-spacing: 2px;
        }

        h2 {
            font-size: 1.2rem;
            margin-bottom: 15px;
            min-height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            padding: 0 10px;
            line-height: 1.4;
        }

        .score-container {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
            font-size: 1rem;
        }

        .score-item {
            background: rgba(255, 255, 255, 0.2);
            padding: 8px 12px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .score-item i {
            font-size: 1.2rem;
        }

        #Container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            grid-template-rows: 1fr 1fr;
            gap: 15px;
            margin: 20px auto;
            width: 100%;
            max-width: 400px;
            aspect-ratio: 1;
        }

        .btn {
            border-radius: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            position: relative;
            overflow: hidden;
            touch-action: manipulation;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0);
            transition: background 0.3s ease;
        }

        .btn:hover::before {
            background: rgba(255, 255, 255, 0.2);
        }

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

        .red {
            background-color: #ff5252;
            grid-column: 1;
            grid-row: 1;
        }

        .yellow {
            background-color: #ffeb3b;
            grid-column: 2;
            grid-row: 1;
        }

        .green {
            background-color: #4caf50;
            grid-column: 1;
            grid-row: 2;
        }

        .purple {
            background-color: #9c27b0;
            grid-column: 2;
            grid-row: 2;
        }

        .flash {
            animation: flash 0.5s ease;
        }

        @keyframes flash {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; transform: scale(1.1); }
        }

        .userflash {
            animation: userflash 0.5s ease;
        }

        @keyframes userflash {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; transform: scale(1.05); }
        }

        .controls {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 15px;
        }

        .btn-control {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            padding: 10px 20px;
            font-size: 0.9rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            touch-action: manipulation;
        }

        .btn-control:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }

        .btn-control:active {
            transform: translateY(0);
        }

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

        .winning-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            padding: 20px;
        }

        .winning-modal.show {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 30px;
            border-radius: 20px;
            text-align: center;
            max-width: 400px;
            width: 100%;
            transform: scale(0.8);
            transition: transform 0.3s ease;
        }

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

        .trophy {
            font-size: 4rem;
            color: gold;
            margin-bottom: 15px;
            animation: bounce 1s infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }

        .confetti {
            position: absolute;
            width: 10px;
            height: 10px;
            background: #f0f;
            position: absolute;
            animation: confetti-fall 3s linear;
        }

        @keyframes confetti-fall {
            0% {
                transform: translateY(-100vh) rotate(0deg);
                opacity: 1;
            }
            100% {
                transform: translateY(100vh) rotate(720deg);
                opacity: 0;
            }
        }

        .instructions {
            margin-top: 15px;
            font-size: 0.8rem;
            opacity: 0.8;
        }

        .game-over-flash {
            animation: gameOverFlash 0.5s ease;
        }

        @keyframes gameOverFlash {
            0%, 100% { background-color: transparent; }
            50% { background-color: rgba(255, 0, 0, 0.3); }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 2rem;
            }
            
            h2 {
                font-size: 1rem;
                min-height: 50px;
            }
            
            .score-container {
                font-size: 0.9rem;
            }
            
            .btn-control {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            
            .modal-content {
                padding: 20px;
            }
            
            .trophy {
                font-size: 3rem;
            }
        }