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

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

body {
    overflow-x: hidden;
}

/* Floating card animations */
.floating-card {
    animation: float 6s ease-in-out infinite;
}

.floating-card:nth-child(2) {
    animation-delay: -2s;
    animation-duration: 7s;
}

.floating-card:nth-child(3) {
    animation-delay: -4s;
    animation-duration: 5.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Nav transition */
.nav-scrolled {
    background: rgba(253, 248, 240, 0.85) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) 20px) !important;
    border-bottom: 1px solid rgba(10, 22, 40, 0.06) !important;
    box-shadow: 0 1px 20px rgba(10, 22, 40, 0.06) !important;
}

/* Selection */
::selection {
    background: rgba(52, 212, 168, 0.25);
    color: #0A1628;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #FDF8F0;
}
::-webkit-scrollbar-thumb {
    background: rgba(10, 22, 40, 0.15);
    border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(10, 22, 40, 0.25);
}

/* Mobile menu transition */
#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus visible */
:focus-visible {
    outline: 2px solid #34D4A8;
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}