/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { margin: 0; overflow-x: hidden; }
img, video { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }

/* ── Scroll Reveal ── */
.reveal-on-scroll {
    opacity: 1;
    transform: translateY(0);
    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);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal-on-scroll {
        opacity: 0;
        transform: translateY(24px);
    }
    .reveal-on-scroll.is-visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Floating Animation ── */
@keyframes float-slow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}
@keyframes float-medium {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-14px) rotate(-3deg); }
}
@keyframes float-fast {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(8deg); }
}
.animate-float-slow { animation: float-slow 8s ease-in-out infinite; }
.animate-float-medium { animation: float-medium 6s ease-in-out infinite; }
.animate-float-fast { animation: float-fast 5s ease-in-out infinite; }

/* ── Header Scroll State ── */
#site-header.scrolled {
    background: rgba(250, 249, 246, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(27, 67, 50, 0.08);
}

/* ── Mobile Menu ── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}
#mobile-menu.open .mobile-nav-link {
    animation: fadeUp 0.4s ease forwards;
    opacity: 0;
}
#mobile-menu.open .mobile-nav-link:nth-child(1) { animation-delay: 0.05s; }
#mobile-menu.open .mobile-nav-link:nth-child(2) { animation-delay: 0.1s; }
#mobile-menu.open .mobile-nav-link:nth-child(3) { animation-delay: 0.15s; }
#mobile-menu.open .mobile-nav-link:nth-child(4) { animation-delay: 0.2s; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Focus Styles ── */
:focus-visible {
    outline: 2px solid #1B4332;
    outline-offset: 2px;
}

/* ── Selection ── */
::selection {
    background: rgba(27, 67, 50, 0.15);
    color: #1B4332;
}