/* ==================== MENUS (Start, Pause, GameOver) ==================== */
        /* Schermata iniziale */
        .start-screen {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #0f0f23 0%, #1a1a40 50%, #2d1b69 100%);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            transition: opacity 0.8s ease-in-out, transform 0.8s ease-in-out;
        }

        .start-screen.hidden {
            opacity: 0;
            transform: scale(0.95);
            pointer-events: none;
        }

        .start-content {
            text-align: center;
            max-width: 600px;
            padding: 2rem;
        }

        .start-title {
            font-family: 'Orbitron', monospace;
            font-size: clamp(3rem, 10vw, 6rem);
            font-weight: 900;
            background: linear-gradient(45deg, #64ffda, #00bcd4, #2196f3, #9c27b0);
            background-size: 300% 300%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: gradientShift 3s ease-in-out infinite;
            text-shadow: 0 0 50px rgba(100, 255, 218, 0.5);
            margin-bottom: 1rem;
        }

        .start-subtitle {
            font-size: 1.5rem;
            color: #b0bec5;
            margin-bottom: 2rem;
            font-weight: 300;
        }

        .play-button {
            background: linear-gradient(45deg, #64ffda, #2196f3);
            border: none;
            padding: 1.5rem 4rem;
            font-family: 'Orbitron', monospace;
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f0f23;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 
                0 10px 30px rgba(100, 255, 218, 0.3),
                0 0 0 1px rgba(255, 255, 255, 0.1);
            position: relative;
            overflow: hidden;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .play-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s ease;
        }

        .play-button:hover {
            transform: translateY(-5px) scale(1.05);
            box-shadow: 
                0 20px 40px rgba(100, 255, 218, 0.4),
                0 0 0 1px rgba(255, 255, 255, 0.2);
        }

        .play-button:hover::before {
            left: 100%;
        }

        .play-button:active {
            transform: translateY(-2px) scale(1.02);
        }

        .start-instructions {
            margin-top: 2rem;
            color: #78909c;
            font-size: 1rem;
            line-height: 1.6;
            background: #233246b3;
            padding: 1.2rem;
            border-radius: 12px;
            border: 2px solid #00ffaa;
            backdrop-filter: blur(10px);
        }
        
        /* Istruzioni specifiche per desktop */
        .desktop-instructions {
            background: rgba(30, 144, 255, 0.15);
            padding: 1rem;
            border-radius: 10px;
            border-left: 4px solid #1e90ff;
            margin: 0.8rem 0;
        }
        
        .desktop-instructions p {
            color: #87ceeb !important;
            font-size: 0.95rem;
            margin: 0;
            font-weight: 500;
        }
        
        /* Istruzioni specifiche per mobile */
        .mobile-instructions {
            background: rgba(30, 144, 255, 0.15);
            padding: 1rem;
            border-radius: 10px;
            border-left: 4px solid #1e90ff;
            margin: 0.8rem 0;
        }
        
        .mobile-instructions p {
            color: #87ceeb !important;
            font-size: 0.95rem;
            margin: 0;
            font-weight: 500;
        }
        
        /* Obiettivo del gioco */
        .game-goal {
            color: #00ff88 !important;
            font-weight: bold;
            text-align: center;
            margin-top: 1.2rem !important;
            padding-top: 1rem;
            border-top: 2px solid rgba(0, 255, 136, 0.4);
            font-size: 1.05rem;
        }
        
        /* Mostra/nascondi istruzioni in base al dispositivo */
        @media (max-width: 768px) {
            .desktop-instructions {
                display: none;
            }
            
            .mobile-instructions {
                display: block;
            }
            
            .start-instructions {
                margin-top: 1.5rem;
                padding: 1rem;
            }
            
            .mobile-instructions p {
                font-size: 0.9rem;
            }
        }
        
        @media (min-width: 769px) {
            .desktop-instructions {
                display: block;
            }
            
            .mobile-instructions {
                display: none;
            }
        }
        
        /* Tablet specifico */
        @media (min-width: 768px) and (max-width: 1024px) {
            .start-instructions {
                padding: 1.5rem;
            }
            
            .desktop-instructions p,
            .mobile-instructions p {
                font-size: 1rem;
            }
            
            .game-goal {
                font-size: 1.1rem;
            }
        }

        .preview-blocks {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin: 2rem 0;
            opacity: 0.7;
        }

        .preview-block {
            width: 24px;
            height: 24px;
            border-radius: 4px;
            animation: blockPulse 2s ease-in-out infinite;
        }

        .preview-block:nth-child(1) { background: #64ffda; animation-delay: 0s; }
        .preview-block:nth-child(2) { background: #2196f3; animation-delay: 0.3s; }
        .preview-block:nth-child(3) { background: #9c27b0; animation-delay: 0.6s; }
        .preview-block:nth-child(4) { background: #ff5722; animation-delay: 0.9s; }
        .preview-block:nth-child(5) { background: #4caf50; animation-delay: 1.2s; }

        @keyframes blockPulse {
            0%, 100% { opacity: 0.7; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.1); }
        }

        /* Nascondi il gioco inizialmente */
        .game-container {
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.8s ease-in-out;
            pointer-events: none;
        }

        .game-container.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        /* Mobile Instructions */
        .mobile-instructions {
            display: none;
            background: rgba(0, 0, 0, 0.7);
            border-radius: 16px;
            padding: 1.5rem;
            margin: 1rem 0;
            border: 2px solid rgba(100, 255, 218, 0.3);
            backdrop-filter: blur(10px);
        }

        .mobile-instructions h3 {
            color: #64ffda;
            font-family: 'Orbitron', monospace;
            text-align: center;
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }

        .touch-controls {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .touch-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.8rem;
            background: rgba(100, 255, 218, 0.1);
            border-radius: 8px;
            border: 1px solid rgba(100, 255, 218, 0.2);
        }

        .touch-gesture {
            font-size: 1.1rem;
            font-weight: 600;
            color: #64ffda;
        }

        .touch-action {
            color: #ffffff;
            font-weight: 500;
        }

        .mobile-only {
            display: none;
        }

        /* Mobile game control help text and menu */
        .mobile-game-controls {
            display: none;
            justify-content: center;
            margin-top: 1rem;
            padding: 0 1rem;
        }
        
        .mobile-help-text {
            font-family: 'Orbitron', monospace;
            font-size: 0.9rem;
            color: rgba(100, 255, 218, 0.8);
            text-align: center;
            padding: 0.5rem;
            background: rgba(0, 0, 0, 0.3);
            border-radius: 15px;
            border: 1px solid rgba(100, 255, 218, 0.3);
        }
        
        /* Mobile Pause Menu */
        .mobile-pause-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            z-index: 1000;
            display: none;
            align-items: center;
            justify-content: center;
        }
        
        .mobile-pause-content {
            background: rgba(15, 15, 35, 0.95);
            backdrop-filter: blur(10px);
            border: 2px solid #64ffda;
            border-radius: 20px;
            padding: 2rem;
            min-width: 250px;
            text-align: center;
        }
        
        .mobile-pause-menu.active {
            display: flex;
            animation: fadeIn 0.3s ease-out;
        }
        
        .mobile-pause-title {
            font-family: 'Orbitron', monospace;
            font-size: 1.5rem;
            color: #64ffda;
            text-align: center;
            margin-bottom: 1.5rem;
            text-shadow: 0 0 10px #64ffda;
        }
        
        .mobile-pause-buttons {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

        .mobile-btn {
            background: linear-gradient(135deg, #64ffda, #2196f3);
            border: none;
            padding: 0.8rem 1.5rem;
            font-family: 'Orbitron', monospace;
            font-size: 1rem;
            font-weight: 600;
            color: #0f0f23;
            border-radius: 25px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(100, 255, 218, 0.3);
            min-width: 120px;
        }

        .mobile-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(100, 255, 218, 0.4);
        }

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

        .pause-btn {
            background: linear-gradient(135deg, #ffb74d, #ff9800);
        }

        .restart-btn {
            background: linear-gradient(135deg, #81c784, #4caf50);
        }

        /* Mobile Game Over Overlay */
        .mobile-gameover-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(15, 15, 35, 0.98);
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            backdrop-filter: blur(15px);
        }
        
        /* Hide canvas on mobile when game over overlay is active */
        @media (max-width: 768px) {
            .mobile-gameover-overlay.active ~ * #canvas {
                visibility: hidden !important;
            }
        }

        .mobile-gameover-content {
            text-align: center;
            padding: 2rem;
            max-width: 90%;
        }

        .mobile-gameover-title {
            font-family: 'Orbitron', monospace;
            font-size: 3rem;
            font-weight: 900;
            color: #ff5722;
            margin-bottom: 1rem;
            text-shadow: 0 0 20px rgba(255, 87, 34, 0.5);
        }

        .mobile-gameover-score {
            font-family: 'Orbitron', monospace;
            font-size: 1.5rem;
            color: #64ffda;
            margin-bottom: 2rem;
        }

        .mobile-gameover-instruction {
            font-size: 1.2rem;
            color: #ffffff;
            margin-bottom: 1rem;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.6; }
        }

        /* Desktop-only elements (hidden on mobile) */
        .desktop-only {
            display: block;
        }

        /* Show mobile elements on small screens */
        @media (max-width: 768px) {
            .mobile-instructions {
                display: block;
            }
            
            .mobile-only {
                display: flex;
            }
            
            .desktop-only {
                display: none !important;
            }
            
            .mobile-game-controls {
                display: flex !important;
            }
            
            .mobile-game-controls {
                display: flex !important;
            }
            
            .mobile-game-controls {
                display: flex !important;
            }
        }

        /* Desktop Pause Menu */
        .desktop-pause-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1000;
            display: none;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(10px);
        }
        
        .desktop-pause-content {
            background: linear-gradient(135deg, rgba(15, 15, 35, 0.95), rgba(26, 26, 64, 0.95));
            backdrop-filter: blur(15px);
            border: 3px solid #64ffda;
            border-radius: 25px;
            padding: 3rem 2.5rem;
            min-width: 400px;
            max-width: 500px;
            text-align: center;
            box-shadow: 
                0 25px 50px rgba(0, 0, 0, 0.5),
                inset 0 1px 0 rgba(255, 255, 255, 0.1),
                0 0 0 1px rgba(100, 255, 218, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .desktop-pause-content::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            background: linear-gradient(45deg, #64ffda, #2196f3, #9c27b0, #64ffda);
            border-radius: 27px;
            z-index: -1;
            animation: borderGlow 3s linear infinite;
            background-size: 300% 300%;
        }
        
        .desktop-pause-menu.active {
            display: flex;
            animation: fadeInScale 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        
        @keyframes fadeInScale {
            from {
                opacity: 0;
                transform: scale(0.8);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }
        
        .desktop-pause-title {
            font-family: 'Orbitron', monospace;
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(45deg, #64ffda, #00bcd4, #2196f3);
            background-size: 200% 200%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: gradientShift 3s ease-in-out infinite;
            text-shadow: 0 0 20px rgba(100, 255, 218, 0.5);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }
        
        .desktop-pause-subtitle {
            color: #b0bec5;
            font-size: 1.1rem;
            margin-bottom: 2.5rem;
            font-weight: 300;
            opacity: 0.9;
        }
        
        .desktop-pause-buttons {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            margin-top: 1rem;
        }
        
        .desktop-pause-btn {
            background: linear-gradient(135deg, #64ffda, #2196f3);
            border: none;
            padding: 1rem 2rem;
            font-family: 'Orbitron', monospace;
            font-size: 1.1rem;
            font-weight: 600;
            color: #0f0f23;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            box-shadow: 
                0 8px 25px rgba(100, 255, 218, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
            position: relative;
            overflow: hidden;
            text-transform: uppercase;
            letter-spacing: 1px;
            min-width: 200px;
        }
        
        .desktop-pause-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s ease;
        }
        
        .desktop-pause-btn:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 
                0 12px 35px rgba(100, 255, 218, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
        }
        
        .desktop-pause-btn:hover::before {
            left: 100%;
        }
        
        .desktop-pause-btn:active {
            transform: translateY(-1px) scale(1.01);
        }
        
        .desktop-pause-btn.secondary {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
            color: #64ffda;
            border: 2px solid #64ffda;
            box-shadow: 
                0 8px 25px rgba(100, 255, 218, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
        }
        
        .desktop-pause-btn.secondary:hover {
            background: linear-gradient(135deg, rgba(100, 255, 218, 0.2), rgba(100, 255, 218, 0.1));
            color: #ffffff;
            box-shadow: 
                0 12px 35px rgba(100, 255, 218, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
        }
        
        .desktop-pause-btn.danger {
            background: linear-gradient(135deg, #ff5722, #e64a19);
            color: #ffffff;
        }
        
        .desktop-pause-btn.danger:hover {
            background: linear-gradient(135deg, #ff6f47, #ff5722);
            box-shadow: 
                0 12px 35px rgba(255, 87, 34, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
        }
        
        .desktop-pause-stats {
            background: rgba(0, 0, 0, 0.3);
            border-radius: 15px;
            padding: 1rem;
            margin: 1.5rem 0;
            border: 1px solid rgba(100, 255, 218, 0.2);
        }
        
        .desktop-pause-stats-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin: 0.5rem 0;
        }
        
        .desktop-pause-stats-label {
            color: #b0bec5;
            font-size: 0.9rem;
            font-weight: 500;
        }
        
        .desktop-pause-stats-value {
            color: #64ffda;
            font-family: 'Orbitron', monospace;
            font-weight: 600;
            font-size: 1rem;
        }
        
        /* ==================== MEDIA QUERIES PER MENU DI PAUSA ==================== */
        
        /* Menu di pausa - Tablet */
        @media (min-width: 769px) and (max-width: 1024px) {
            .desktop-pause-content {
                min-width: 350px;
                max-width: 450px;
                padding: 2.5rem 2rem;
            }
            
            .desktop-pause-title {
                font-size: 2rem;
            }
            
            .desktop-pause-btn {
                min-width: 180px;
                font-size: 1rem;
            }
        }

        /* Tablet adjustments: center box contents similar to mobile but with slightly larger spacing */
        @media only screen and (min-width: 429px) and (max-width: 1024px) {
            .stat-card, .stat-item, .info-item, .info-panel, .record-card {
                display: flex !important;
                flex-direction: column !important;
                align-items: center !important;
                justify-content: center !important;
                text-align: center !important;
                gap: 0.5rem !important;
            }

            .stat-item, .info-item {
                flex-direction: column !important;
                align-items: center !important;
                justify-content: center !important;
            }

            .stat-label, .info-label { text-align: center !important; margin-bottom: 0.4rem !important; }
            .stat-number, .info-value, .record-value { text-align: center !important; }

            /* Slightly increase paddings on tablets */
            .gameover-content { padding: 1.4rem; }
            .gameover-title { font-size: clamp(2rem, 6vw, 3rem); }
            .gameover-btn { padding: 0.85rem 1.1rem; }
        }
        
        /* Menu di pausa mobile - Large */
        @media (min-width: 481px) and (max-width: 768px) {
            .mobile-pause-content {
                min-width: 280px;
                padding: 2.5rem;
            }
            
            .mobile-pause-title {
                font-size: 1.8rem;
            }
            
            .mobile-btn {
                min-width: 150px;
                font-size: 1.1rem;
                padding: 1rem 1.8rem;
            }
        }
        
        /* Menu di pausa mobile - Small */
        @media (max-width: 480px) {
            .mobile-pause-content {
                min-width: 250px;
                padding: 2rem;
                margin: 1rem;
            }
            
            .mobile-pause-title {
                font-size: 1.6rem;
                margin-bottom: 1.2rem;
            }
            
            .mobile-btn {
                min-width: 140px;
                font-size: 1rem;
                padding: 0.9rem 1.5rem;
            }
        }
        
        /* Menu di pausa mobile - Extra Small */
        @media (max-width: 360px) {
            .mobile-pause-content {
                min-width: 220px;
                padding: 1.5rem;
                margin: 0.5rem;
            }
            
            .mobile-pause-title {
                font-size: 1.4rem;
                margin-bottom: 1rem;
            }
            
            .mobile-btn {
                min-width: 120px;
                font-size: 0.9rem;
                padding: 0.8rem 1.2rem;
            }
        }
        
        /* ==================== MEDIA QUERIES PER MENU DI PAUSA ==================== */
        
        /* Menu di pausa - Tablet */
        @media (min-width: 769px) and (max-width: 1024px) {
            .desktop-pause-content {
                min-width: 350px;
                max-width: 450px;
                padding: 2.5rem 2rem;
            }
            
            .desktop-pause-title {
                font-size: 2rem;
            }
            
            .desktop-pause-btn {
                min-width: 180px;
                font-size: 1rem;
            }
        }
        
        /* Menu di pausa mobile - Large */
        @media (min-width: 481px) and (max-width: 768px) {
            .mobile-pause-content {
                min-width: 280px;
                padding: 2.5rem;
            }
            
            .mobile-pause-title {
                font-size: 1.8rem;
            }
            
            .mobile-btn {
                min-width: 150px;
                font-size: 1.1rem;
                padding: 1rem 1.8rem;
            }
        }
        
        /* Menu di pausa mobile - Small */
        @media (max-width: 480px) {
            .mobile-pause-content {
                min-width: 250px;
                padding: 2rem;
                margin: 1rem;
            }
            
            .mobile-pause-title {
                font-size: 1.6rem;
                margin-bottom: 1.2rem;
            }
            
            .mobile-btn {
                min-width: 140px;
                font-size: 1rem;
                padding: 0.9rem 1.5rem;
            }
        }
        
        /* Menu di pausa mobile - Extra Small */
        @media (max-width: 360px) {
            .mobile-pause-content {
                min-width: 220px;
                padding: 1.5rem;
                margin: 0.5rem;
            }
        }