/* ── Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ── Nav scroll state ───────────────────────────── */
#site-header.scrolled {
    background: rgba(254,253,251,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(15,26,46,0.06);
}

/* ── Nav links underline animation ──────────────── */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #d13f22;
    transition: width 0.25s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* ── Mobile menu ────────────────────────────────── */
.menu-bar { transition: all 0.3s ease; }
#menu-toggle.active .menu-bar:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}
#menu-toggle.active .menu-bar:nth-child(2) {
    opacity: 0;
}
#menu-toggle.active .menu-bar:nth-child(3) {
    width: 24px;
    transform: rotate(-45deg) translate(4px, -4px);
}
.mobile-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(15,26,46,0.06);
}
.mobile-link:last-child { border-bottom: none; }

/* ── Scroll reveal (progressive enhancement) ───── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
}

/* ── Reduced motion ─────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    img { transition: none; }
}

/* ── Selection ──────────────────────────────────── */
::selection {
    background: #f9c4b5;
    color: #712219;
}