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

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal — progressive enhancement, only active when JS runs */
.scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .scroll-reveal:not(.revealed) {
        opacity: 0;
        transform: translateY(32px);
    }
}

/* Navbar glass effect when scrolled */
nav.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(16px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a1628;
}
::-webkit-scrollbar-thumb {
    background: #d4a017;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #e8b828;
}

/* Selection color */
::selection {
    background: #d4a017;
    color: #0a1628;
}

/* Mobile menu transition */
#mobile-menu {
    animation: slideDown 0.3s ease forwards;
}

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

/* Subtle floating animation for hero elements */
@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

/* Image lazy load fade */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.4s ease;
}
img[loading="lazy"].loaded {
    opacity: 1;
}