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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
}

/* Navbar transition states */
.nav-link {
    color: inherit;
}

nav:not(.scrolled) .nav-link,
nav:not(.scrolled) .mobile-link {
    color: #ffffff;
}

nav.scrolled .nav-link {
    color: #0a1628;
}

nav.scrolled .mobile-link {
    color: #ffffff;
}

nav:not(.scrolled) .mobile-link {
    color: #ffffff;
}

/* Floating card animations */
@keyframes float1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes float4 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

.card-float-1 { animation: float1 6s ease-in-out infinite; }
.card-float-2 { animation: float2 5s ease-in-out infinite 0.5s; }
.card-float-3 { animation: float3 7s ease-in-out infinite 1s; }
.card-float-4 { animation: float4 5.5s ease-in-out infinite 0.3s; }

/* Scroll line animation */
@keyframes scrollLine {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

.animate-scroll-line {
    animation: scrollLine 2s ease-in-out infinite;
}

/* Scroll reveal - progressive enhancement: visible by default, animated via JS */
.reveal {
    /* Default state: fully visible */
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

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

/* Mobile menu */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}

#mobileMenu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Hamburger animation */
#menuBtn.active #menuLine1 {
    transform: rotate(45deg) translate(3px, 3px);
}

#menuBtn.active #menuLine2 {
    opacity: 0;
}

#menuBtn.active #menuLine3 {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 1.5rem;
}

/* Selection color */
::selection {
    background: #c9a227;
    color: #0a1628;
}

/* Subtle image loading */
img {
    opacity: 1;
}