:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --secondary: #06b6d4;
            --dark: #1e293b;
            --light: #f8fafc;
            --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
        }

        body {
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
        }

        .nav-custom {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
        }

        .brand {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--dark);
        }

        .brand i {
            color: var(--primary);
        }

        .hero {
            background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 100px 0 50px;
        }

        .hero-title {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.1;
        }

        .text-gradient {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .dashboard-preview {
            background: white;
            border-radius: 16px;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
            transform: perspective(1000px) rotateY(-5deg);
            transition: transform 0.3s ease;
        }

        .dashboard-preview:hover {
            transform: perspective(1000px) rotateY(0);
        }

        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            border: 1px solid transparent;
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            border-color: var(--primary);
        }

        .feature-icon {
            width: 70px;
            height: 70px;
            background: var(--gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .solution-tabs .nav-link {
            border: none;
            padding: 1rem 1.5rem;
            font-weight: 600;
            color: var(--dark);
            border-radius: 50px;
            margin: 0 0.25rem;
        }

        .solution-tabs .nav-link.active {
            background: var(--gradient);
            color: white;
        }

        .demo-container {
            background: var(--light);
            border-radius: 16px;
            padding: 1.5rem;
        }

        .payment-method {
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            padding: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }

        .payment-method.active {
            border-color: var(--primary);
            background: white;
        }

        .payment-method i {
            font-size: 1.5rem;
            color: #64748b;
        }

        .payment-method.active i {
            color: var(--primary);
        }

        .payment-form {
            display: none;
        }

        .payment-form.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .stat-counter {
            font-size: clamp(2rem, 4vw, 2.5rem);
            font-weight: 700;
            color: var(--primary);
        }

        .cta-section {
            background: var(--gradient);
            color: white;
        }

        .footer {
            background: var(--dark);
            color: white;
        }

        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 0%;
            height: 3px;
            background: var(--gradient);
            z-index: 9999;
            transition: width 0.1s ease;
        }

        .back-to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 50px;
            height: 50px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50%;
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
        }

        .back-to-top.show {
            opacity: 1;
        }

        .toast-notification {
            position: fixed;
            top: 80px;
            right: 20px;
            background: white;
            padding: 1rem;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            border-left: 4px solid #10b981;
            transform: translateX(400px);
            transition: transform 0.3s ease;
            z-index: 1000;
            max-width: calc(100vw - 40px);
        }

        .toast-notification.show {
            transform: translateX(0);
        }

        @media (max-width: 576px) {
            .hero {
                padding: 80px 0 30px;
                text-align: center;
            }
            
            .dashboard-preview {
                transform: none;
                margin-top: 2rem;
            }
            
            .hero-buttons {
                flex-direction: column;
                gap: 1rem !important;
            }
            
            .hero-buttons .btn {
                width: 100%;
                max-width: 300px;
            }
            
            .stats-container {
                justify-content: center;
                gap: 2rem !important;
            }
            
            .solution-tabs .nav-link {
                padding: 0.75rem 1rem;
                font-size: 0.9rem;
                margin: 0.25rem;
            }
            
            .feature-card {
                padding: 1.5rem;
            }
            
            .demo-container {
                padding: 1rem;
            }
            
            .payment-method {
                padding: 0.75rem;
            }
            
            .back-to-top {
                bottom: 15px;
                right: 15px;
                width: 45px;
                height: 45px;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                text-align: center;
            }
            
            .hero-subtitle {
                text-align: center;
                margin-left: auto;
                margin-right: auto;
            }
            
            .dashboard-preview {
                transform: none;
            }
            
            .nav-custom .navbar-nav {
                text-align: center;
                padding: 1rem 0;
            }
            
            .nav-custom .nav-buttons {
                justify-content: center;
                margin-top: 1rem;
            }
        }

        @media (min-width: 992px) {
            .hero {
                padding: 120px 0 80px;
            }
        }

        @media (max-width: 360px) {
            .brand {
                font-size: 1.3rem;
            }
            
            .hero-title {
                font-size: 2rem;
            }
            
            .feature-icon {
                width: 60px;
                height: 60px;
                font-size: 1.25rem;
            }
        }