body {
            margin: 0;
            padding: 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            font-family: 'Arial', sans-serif;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            overflow-x: hidden;
        }

    .game-container {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 30px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        border: 1px solid rgba(255, 255, 255, 0.2);
        max-width: 600px;
        width: 100%;
    }

    .title {
        text-align: center;
        color: white;
        font-size: 2.5em;
        margin-bottom: 10px;
        text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
        font-weight: bold;
    }

    .subtitle {
        text-align: center;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: 30px;
        font-size: 1.1em;
    }

    .stats {
        display: flex;
        justify-content: space-between;
        margin-bottom: 30px;
        color: white;
        font-size: 1.2em;
        font-weight: bold;
    }

    .stat-item {
        background: rgba(255, 255, 255, 0.2);
        padding: 10px 20px;
        border-radius: 15px;
        backdrop-filter: blur(5px);
    }

    .pop-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        gap: 15px;
        justify-items: center;
        margin-bottom: 30px;
        padding: 20px;
        background: rgba(255, 255, 255, 0.05);
        border-radius: 15px;
    }

    .bubble {
        width: 60px;
        height: 60px;
        border-radius: 50%;
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        position: relative;
        overflow: hidden;
        user-select: none;
    }

    .bubble.unpressed {
        background: radial-gradient(circle at 30% 30%, #ff6b6b, #ff5252);
        box-shadow: 
            0 8px 16px rgba(0, 0, 0, 0.3),
            inset 0 -4px 8px rgba(0, 0, 0, 0.2),
            inset 0 4px 8px rgba(255, 255, 255, 0.3);
        transform: translateY(0);
    }

    .bubble.pressed {
        background: radial-gradient(circle at 70% 70%, #4CAF50, #388E3C);
        box-shadow: 
            0 2px 4px rgba(0, 0, 0, 0.2),
            inset 0 4px 8px rgba(0, 0, 0, 0.3),
            inset 0 -2px 4px rgba(255, 255, 255, 0.1);
        transform: translateY(4px);
    }

    .bubble:hover:not(.pressed) {
        transform: translateY(-2px) scale(1.05);
        box-shadow: 
            0 12px 24px rgba(0, 0, 0, 0.4),
            inset 0 -4px 8px rgba(0, 0, 0, 0.2),
            inset 0 4px 8px rgba(255, 255, 255, 0.4);
    }

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

    .bubble::before {
        content: '';
        position: absolute;
        top: 10%;
        left: 20%;
        width: 30%;
        height: 30%;
        background: rgba(255, 255, 255, 0.4);
        border-radius: 50%;
        transition: opacity 0.3s ease;
    }

    .bubble.pressed::before {
        opacity: 0.1;
    }

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

    .btn {
        padding: 12px 24px;
        border: none;
        border-radius: 25px;
        font-size: 1em;
        font-weight: bold;
        cursor: pointer;
        transition: all 0.3s ease;
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-primary {
        background: linear-gradient(45deg, #FF6B6B, #FF8E53);
        color: white;
    }

    .btn-secondary {
        background: rgba(255, 255, 255, 0.2);
        color: white;
    }

    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    }

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

    .particle {
        position: absolute;
        pointer-events: none;
        border-radius: 50%;
        z-index: 1000;
    }

    @keyframes pop-particle {
        0% {
            opacity: 1;
            transform: scale(0) translate(0, 0);
        }
        50% {
            opacity: 0.8;
            transform: scale(1) translate(var(--tx), var(--ty));
        }
        100% {
            opacity: 0;
            transform: scale(0.5) translate(calc(var(--tx) * 2), calc(var(--ty) * 2));
        }
    }

    @media (max-width: 480px) {
        .bubble {
            width: 50px;
            height: 50px;
        }
        
        .pop-grid {
            gap: 10px;
        }
        
        .title {
            font-size: 2em;
        }
    }