/* ── Base & Utilities ── */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.revealed {
        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; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* ── Navbar scroll state ── */
header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ── Mobile Nav ── */
#mobileNav.open {
    opacity: 1;
    pointer-events: all;
}

/* ── Custom scrollbar ── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a144d;
}
::-webkit-scrollbar-thumb {
    background: #f59e0b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #d97706;
}

/* ── Selection ── */
::selection {
    background: #f59e0b;
    color: #0a144d;
}
</style>