/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; }
img { max-width: 100%; height: auto; }

/* ── Scroll Reveal (progressive enhancement) ── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    .reveal.reveal-visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Floating Animations ── */
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(12deg); }
    50% { transform: translateY(-20px) rotate(12deg); }
}
@keyframes float-delay {
    0%, 100% { transform: translateY(0) rotate(-12deg); }
    50% { transform: translateY(-16px) rotate(-12deg); }
}
.animate-float { animation: float 6s ease-in-out infinite; }
.animate-float-delay { animation: float-delay 5s ease-in-out infinite 1s; }

/* ── Navbar ── */
#nav.scrolled {
    box-shadow: 0 4px 20px rgba(13, 27, 42, 0.3);
}

/* ── Mobile Menu ── */
#mobile-menu {
    animation: slideDown 0.25s ease;
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #0D1B2A; }
::-webkit-scrollbar-thumb { background: #2DD4BF; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #5eead4; }