:root {
            --primary: #2196f3;
            --primary-dark: #1976d2;
            --accent: #ff4081;
            --background: #0a1929;
            --surface: #132f4c;
            --text: #ffffff;
        }

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

        body {
            margin: 0;
            padding: 20px;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background: radial-gradient(circle at center, var(--surface), var(--background));
            font-family: 'Segoe UI', system-ui, sans-serif;
            color: var(--text);
            overflow: hidden;
        }

        .game-container {
            position: relative;
            padding: 20px;
            border-radius: 24px;
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            box-shadow: 
                0 0 40px rgba(0, 0, 0, 0.3),
                inset 0 0 20px rgba(255, 255, 255, 0.1);
        }

        #gameCanvas {
            border-radius: 16px;
            background: linear-gradient(135deg, #071a2c, #0d2b4a);
            box-shadow: 
                0 10px 30px rgba(0, 0, 0, 0.5),
                inset 0 2px 2px rgba(255, 255, 255, 0.1);
        }

        .screen {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            background: rgba(19, 47, 76, 0.95);
            padding: 40px;
            border-radius: 24px;
            backdrop-filter: blur(10px);
            box-shadow: 
                0 15px 35px rgba(0, 0, 0, 0.4),
                inset 0 2px 2px rgba(255, 255, 255, 0.1);
            animation: fadeIn 0.3s ease-out;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translate(-50%, -40%); }
            to { opacity: 1; transform: translate(-50%, -50%); }
        }

        .screen h1 {
            font-size: 2.5em;
            margin-bottom: 0.5em;
            background: linear-gradient(135deg, #fff, #a2d2ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .screen p {
            font-size: 1.2em;
            margin-bottom: 1.5em;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.6;
        }

        button {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text);
            border: none;
            padding: 15px 40px;
            font-size: 1.2em;
            font-weight: 600;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 
                0 6px 12px rgba(33, 150, 243, 0.3),
                inset 0 2px 5px rgba(255, 255, 255, 0.2);
        }

        button:hover {
            transform: translateY(-2px);
            box-shadow: 
                0 8px 20px rgba(33, 150, 243, 0.4),
                inset 0 2px 5px rgba(255, 255, 255, 0.2);
            background: linear-gradient(135deg, #2196f3, #2979ff);
        }

        button:active {
            transform: translateY(1px);
            box-shadow: 
                0 4px 8px rgba(33, 150, 243, 0.3),
                inset 0 2px 5px rgba(255, 255, 255, 0.2);
        }

        .score-container {
            position: absolute;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(255, 255, 255, 0.1);
            padding: 10px 25px;
            border-radius: 50px;
            backdrop-filter: blur(5px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            z-index: 1;
        }

        #powerUpIndicator {
            position: absolute;
            top: 20px;
            right: 20px;
            padding: 10px 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 15px;
            backdrop-filter: blur(5px);
            display: none;
        }

        @keyframes glowing {
            0% { box-shadow: 0 0 5px var(--primary); }
            50% { box-shadow: 0 0 20px var(--primary); }
            100% { box-shadow: 0 0 5px var(--primary); }
        }

        .power-active {
            animation: glowing 2s infinite;
        }

        #highScoreDisplay {
            position: absolute;
            top: 60px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(255, 255, 255, 0.1);
            padding: 5px 15px;
            border-radius: 25px;
            backdrop-filter: blur(5px);
            font-size: 0.9em;
        }

        #levelDisplay {
            position: absolute;
            top: 20px;
            left: 20px;
            background: rgba(255, 255, 255, 0.1);
            padding: 5px 15px;
            border-radius: 25px;
            backdrop-filter: blur(5px);
        }

        #pauseButton {
            position: absolute;
            top: 20px;
            right: 20px;
            background: rgba(255, 255, 255, 0.1);
            padding: 5px 15px;
            border-radius: 25px;
            backdrop-filter: blur(5px);
            cursor: pointer;
        }