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

html {
    scroll-behavior: smooth;
}

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

/* Scroll reveal — progressive enhancement, only active when JS loads */
.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 scroll state */
#navbar.scrolled {
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(20, 184, 166, 0.1);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0F172A;
}
::-webkit-scrollbar-thumb {
    background: #1E293B;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #0D9488;
}

/* Selection color */
::selection {
    background: rgba(20, 184, 166, 0.3);
    color: white;
}