*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { overflow-x: hidden; }

::selection { background: rgba(212, 168, 75, 0.3); color: #0F172A; }

/* Scroll reveal — progressive enhancement, hidden only when JS enables it */
@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile menu */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1), padding 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
#mobile-menu.open {
    max-height: 400px;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

/* Back to top button */
#back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0F172A; }
::-webkit-scrollbar-thumb { background: #D4A84B; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #EAB304; }

/* Focus styles */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #D4A84B;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Shimmer effect for gold elements */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

/* Float animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

/* Pulse glow for gold elements */
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(212, 168, 75, 0.3); }
    50% { box-shadow: 0 0 40px rgba(212, 168, 75, 0.6); }
}