/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { margin: 0; overflow-x: hidden; }
img { display: block; max-width: 100%; }

/* Navigation */
.nav-line { transition: transform 0.3s ease, opacity 0.3s ease; }
#menu-toggle.active .nav-line:first-child { transform: rotate(45deg) translate(3px, 3px); }
#menu-toggle.active .nav-line:last-child { transform: rotate(-45deg) translate(3px, -3px); }

/* Mobile menu */
.mobile-link { transition: opacity 0.3s ease; }
.mobile-link:hover { opacity: 0.6; }

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.0s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal, .reveal-stagger > * {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* Smooth scroll offset for fixed nav */
section[id] { scroll-margin-top: 64px; }

/* Selection */
::selection { background: rgba(111, 200, 142, 0.2); }
</style>