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

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

::selection {
    background: #FF6B4A;
    color: #1a1a1a;
}

/* Mobile menu animations */
#mobileMenu {
    animation: menuFadeIn 0.3s ease forwards;
}

#mobileMenu.hidden {
    animation: menuFadeOut 0.2s ease forwards;
}

@keyframes menuFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes menuFadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.mobile-menu-link {
    animation: slideUp 0.4s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

.mobile-menu-link:nth-child(1) { animation-delay: 0.1s; }
.mobile-menu-link:nth-child(2) { animation-delay: 0.15s; }
.mobile-menu-link:nth-child(3) { animation-delay: 0.2s; }
.mobile-menu-link:nth-child(4) { animation-delay: 0.25s; }

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
    background: #3d3d3d;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #FF6B4A;
}