:root {
            --color-primary: #0ea5e9;
            --color-secondary: #7c3aed;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        .hero-gradient {
            background: linear-gradient(135deg, rgba(14,165,233,0.9) 0%, rgba(124,58,237,0.9) 100%);
        }
        
        .feature-card {
            transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        
        .feature-card:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        
        .testimonial-card {
            background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
            box-shadow: 5px 5px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        
        .testimonial-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        
        .pricing-card-item { /* Renamed from pricing-card to avoid conflict */
            transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        
        .pricing-card-item:hover { /* Renamed from pricing-card to avoid conflict */
            transform: scale(1.05);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        
        .nav-link::after {
            content: '';
            display: block;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width 0.4s ease;
        }
        
        .nav-link:hover::after {
            width: 100%;
        }
        
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
        }
        
        .mobile-menu.open {
            max-height: 100vh;
        }
        
        .hero-slide {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        
        .parallax-bg {
            position: absolute;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            will-change: transform;
        }
        
        .floating {
            animation: float 6s ease-in-out infinite;
        }
        
        .floating-reverse {
            animation: float-reverse 6s ease-in-out infinite;
        }
        
        .pulse-slow {
            animation: pulse-slow 8s infinite;
        }
        
        .popup-content {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.8);
            z-index: 9999;
            overflow-y: auto;
        }
        
        .popup-inner {
            background: white;
            border-radius: 1rem;
            max-width: 800px;
            margin: 5% auto;
            padding: 2rem;
            position: relative;
        }
        
        .close-popup {
            position: absolute;
            top: 1rem;
            right: 1rem;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        @keyframes wave {
            0% { transform: rotate(0deg); }
            10% { transform: rotate(14deg); }
            20% { transform: rotate(-8deg); }
            30% { transform: rotate(14deg); }
            40% { transform: rotate(-4deg); }
            50% { transform: rotate(10deg); }
            60% { transform: rotate(0deg); }
            100% { transform: rotate(0deg); }
        }
        
        .wave {
            animation: wave 2s infinite;
            transform-origin: 70% 70%;
            display: inline-block;
        }