/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; overflow-x: hidden; }

/* ── Scroll Reveal ── */
.reveal {
    opacity: 1;
    transform: none;
    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[data-state="hidden"] {
    opacity: 0;
    transform: translateY(32px);
}

/* ── Nav ── */
#nav {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
#nav.scrolled {
    background: rgba(254, 253, 251, 0.92);
    backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

/* ── Mobile Menu ── */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}
#mobileMenu.closed {
    opacity: 0;
    pointer-events: none;
}
.menu-line { display: block; }
body.menu-open .menu-line:nth-child(1) { transform: translateY(4px) rotate(45deg); }
body.menu-open .menu-line:nth-child(2) { opacity: 0; }
body.menu-open .menu-line:nth-child(3) { transform: translateY(-4px) rotate(-45deg); width: 1rem; }

/* ── Scroll Line Animation ── */
@keyframes scrollLine {
    0% { top: -16px; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 48px; opacity: 0; }
}
.animate-scroll-line {
    animation: scrollLine 2s ease-in-out infinite;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none !important; transition: none; }
    .animate-scroll-line { animation: none; opacity: 1; }
    html { scroll-behavior: auto; }
    * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ── Selection ── */
::selection { background: rgba(194, 112, 78, 0.15); color: #1a1714; }