/* Stili per la modal bottom popup */
        .install-modal {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 9999;
            transform: translateY(100%);
            transition: transform 0.3s ease-in-out;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-radius: 20px 20px 0 0;
            box-shadow: 0 -10px 30px rgba(0,0,0,0.3);
            max-height: 80vh;
            overflow-y: auto;
        }
        
        .install-modal.show {
            transform: translateY(0);
        }
        
        .install-modal-header {
            position: sticky;
            top: 0;
            background: rgba(102, 126, 234, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.2);
        }
        
        .install-modal-body {
            padding: 1.5rem;
        }
        
        .drag-indicator {
            width: 40px;
            height: 4px;
            background: rgba(255,255,255,0.4);
            border-radius: 2px;
            margin: 0 auto 1rem;
            cursor: pointer;
        }
        
        .device-instructions {
            background: rgba(255,255,255,0.1);
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 1rem;
            border: 1px solid rgba(255,255,255,0.2);
        }
        
        .step-item {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            padding: 0.75rem;
            background: rgba(255,255,255,0.1);
            border-radius: 10px;
        }
        
        .step-item:last-child {
            margin-bottom: 0;
        }
        
        .step-number {
            background: #ffd700;
            color: #333;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-right: 1rem;
            flex-shrink: 0;
        }
        
        .step-icon {
            font-size: 1.5rem;
            margin-right: 0.75rem;
            flex-shrink: 0;
        }
        
        .step-content {
            flex: 1;
        }
        
        .icon-visual {
            background: rgba(255,255,255,0.2);
            border-radius: 8px;
            padding: 0.5rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-left: 0.5rem;
            font-size: 1.2rem;
        }
        
        .close-btn {
            background: rgba(255,255,255,0.2);
            border: none;
            color: white;
            border-radius: 50%;
            width: 35px;
            height: 35px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.3s;
        }
        
        .close-btn:hover {
            background: rgba(255,255,255,0.3);
        }
        
        .device-badge {
            background: #ffd700;
            color: #333;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: bold;
            margin-bottom: 1rem;
            display: inline-block;
        }
        
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 9998;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        
        .overlay.show {
            opacity: 1;
            visibility: visible;
        }
        
        .trigger-button {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1000;
            background: linear-gradient(45deg, #667eea, #764ba2);
            border: none;
            color: white;
            border-radius: 50px;
            padding: 1rem 1.5rem;
            box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
            animation: pulse 2s infinite;
        }
        
        .trigger-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
        }
        
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }
        
        .hide-trigger {
            display: none !important;
        }