/* Reset and Global Styles */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            line-height: 1.6; 
            color: #333; 
            background: #ffffff url('../images/clouds.png') no-repeat center center fixed; 
            background-size: cover; 
        }
        
        /* Headings */
        h1, h2, h3 { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 700; 
        }
        
        /* Hero Section */
        #hero { 
            background: url('../images/AviateGPT-Logo.png') no-repeat center center, #f8f9fa; 
            background-size: 100% auto; 
            color: white; 
            text-align: center; 
            min-height: 300px; 
            max-width: 1200px; 
            margin: 0 auto; 
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            align-items: center;
            position: relative;
        }
        #hero h1 {
            font-size: 2.5em;
            margin-top: 20px;
            background: rgb(17, 0, 255);
            padding: 10px;
            border-radius: 5px;
        }
        #hero p { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 400; 
            font-size: 1.2em; 
            margin-bottom: 20px; 
            background: rgba(0, 0, 0, 0.3); 
            padding: 10px; 
            border-radius: 5px; 
        }
        .buttons { 
            position: absolute;
            bottom: 20px;
            right: 20px;
            display: flex; 
            flex-direction: row; 
            align-items: center; 
            gap: 15px; 
            justify-content: flex-end; 
            width: auto; 
        }
        .btn { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 700; 
            display: inline-block; 
            padding: 10px 20px; 
            background: #28a745; 
            color: white; 
            text-decoration: none; 
            border-radius: 5px; 
            transition: background 0.3s; 
            width: 200px; 
            text-align: center; 
        }
        .btn:hover { background: #218838; }
        
        /* Sections */
        section { padding: 60px 20px; max-width: 1200px; margin: 0 auto; }
        #about, #features, #testimonials, #cta { background: white; }
        .feature-grid, .testimonial-grid { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; }
        .card, .testimonial { 
            flex: 1 1 300px; 
            background: #fff; 
            border: 1px solid #ddd; 
            border-radius: 8px; 
            padding: 20px; 
            box-shadow: 0 4px 8px rgba(0,0,0,0.1); 
            transition: transform 0.3s; 
        }
        .card:hover, .testimonial:hover { transform: translateY(-5px); }
        .card h3, .testimonial h3 { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 700; 
            margin-bottom: 10px; 
            color: #007BFF; 
        }
        .card p, .testimonial p { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 400; 
        }
        .testimonial cite {
            display: block;
            margin-top: 10px;
            font-style: italic;
            color: #555;
        }
        
        /* Dashboards Preview */
        #dashboards { text-align: center; }
        .dashboard-preview { display: flex; flex-wrap: wrap; gap: 30px; justify-content: center; }
        .preview { 
            flex: 1 1 400px; 
            background: #e9ecef; 
            padding: 20px; 
            border-radius: 8px; 
        }
        .preview h3 { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 700; 
        }
        .preview p { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 400; 
        }
        
        /* CTA Section */
        #cta { text-align: center; background: #007BFF; color: white; }
        #cta h2 { margin-bottom: 20px; }
        #cta .btn { background: #28a745; margin: 10px; }
        
        /* Footer */
        footer { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 400; 
            background: #343a40; 
            color: white; 
            text-align: center; 
            padding: 20px; 
        }
        
        /* Modal for Login */
        .modal { 
            display: none; 
            position: fixed; 
            top: 0; 
            left: 0; 
            width: 100%; 
            height: 100%; 
            background: rgba(0,0,0,0.5); 
            justify-content: center; 
            align-items: center; 
            z-index: 1000; 
        }
        .modal-content { 
            background: white; 
            padding: 30px; 
            border-radius: 8px; 
            width: 400px; 
            box-shadow: 0 4px 20px rgba(0,0,0,0.2); 
            text-align: left; 
        }
        .close { 
            float: right; 
            cursor: pointer; 
            font-size: 24px; 
            color: #aaa; 
            transition: color 0.3s; 
        }
        .close:hover { color: #333; }
        .modal-content h2 { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 700; 
            margin-bottom: 20px; 
            text-align: center; 
        }
        .modal-content label { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 700; 
            display: block; 
            margin-bottom: 5px; 
        }
        .modal-content input { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 400; 
            width: 100%; 
            padding: 10px; 
            margin-bottom: 15px; 
            border: 1px solid #ddd; 
            border-radius: 4px; 
        }
        .modal-content .btn { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 700; 
            width: 100%; 
            margin-bottom: 10px; 
        }
        .modal-content p { 
            font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            font-weight: 400; 
            text-align: center; 
            font-size: 0.9em; 
        }
        .modal-content a { 
            color: #007BFF; 
            text-decoration: none; 
        }
        .modal-content a:hover { 
            text-decoration: underline; 
        }
        
        /* Responsive */
        @media (max-width: 768px) { 
            #hero { padding: 150px 20px; background-size: 100% auto; min-height: 500px; }
            #hero h1 { font-size: 2em; }
            #hero p { font-size: 1em; }
            .btn { width: 180px; }
            .buttons { position: static; margin-top: 20px; flex-direction: column; align-items: center; }
            .modal-content { width: 90%; padding: 20px; }
        }

        /* Toast Notification Styles */
        #toast {
            visibility: hidden;
            min-width: 250px;
            transform: translateX(-50%);
            background-color: #28a745;
            color: white;
            text-align: center;
            border-radius: 4px;
            padding: 16px;
            position: fixed;
            z-index: 1001;
            left: 50%;
            bottom: 30px;
            font-size: 17px;
        }
        #toast.show {
            visibility: visible;
            animation: fadein 0.5s, fadeout 0.5s 2.5s;
        }
        @keyframes fadein {
            from { bottom: 0; opacity: 0; }
            to { bottom: 30px; opacity: 1; }
        }
        @keyframes fadeout {
            from { bottom: 30px; opacity: 1; }
            to { bottom: 0; opacity: 0; }
        }