*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Floating card animations */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(2deg); }
    50% { transform: translateY(-12px) rotate(2deg); }
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(0deg); }
}

@keyframes float-alt {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(0deg); }
}

.floating-card {
    animation: float 4s ease-in-out infinite;
}

.floating-card:nth-child(2) {
    animation: float-slow 5s ease-in-out infinite;
    animation-delay: 1s;
}

.floating-card:nth-child(3) {
    animation: float-alt 4.5s ease-in-out infinite;
    animation-delay: 2s;
}

/* Scroll reveal — progressive enhancement via JS */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Mobile menu */
.mobile-link {
    opacity: 1;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #040B18;
}

::-webkit-scrollbar-thumb {
    background: #152D56;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1B3A6E;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .floating-card {
        animation: none;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .scroll-reveal {
        transition: none;
    }
    
    img {
        transition: none;
    }
}