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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Header ─────────────────────────────────────────────── */
#site-header {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#site-header.scrolled {
    background: rgba(250, 245, 249, 0.92);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    box-shadow: 0 1px 0 rgba(110, 45, 110, 0.08), 0 4px 24px rgba(110, 45, 110, 0.06);
}

.header-logo-text {
    color: #faf5f9;
    transition: color 0.4s ease;
}

#site-header.scrolled .header-logo-text {
    color: #4a1e4a;
}

.nav-link {
    position: relative;
}

#site-header.scrolled .nav-link {
    color: #6e2d6e;
}

#site-header.scrolled .nav-link:hover {
    background: rgba(110, 45, 110, 0.08);
    color: #2d122d;
}

/* ── Mobile menu ────────────────────────────────────────── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
}

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

.mobile-nav-link {
    position: relative;
}

.mobile-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 40px;
    height: 2px;
    background: #f59e0b;
    transition: transform 0.3s ease;
}

.mobile-nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* ── Reveal animations (progressive enhancement) ────────── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

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

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ── Back to top ────────────────────────────────────────── */
#back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

#back-to-top:not(.visible) {
    opacity: 0;
    transform: translateY(16px);
    pointer-events: none;
}

/* ── Focus visible ──────────────────────────────────────── */
:focus-visible {
    outline: 2px solid #f59e0b;
    outline-offset: 2px;
}

/* ── Selection ───────────────────────────────────────────── */
::selection {
    background: rgba(168, 85, 168, 0.2);
    color: #2d122d;
}

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

::-webkit-scrollbar-track {
    background: #faf5f9;
}

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

::-webkit-scrollbar-thumb:hover {
    background: #c98cc9;
}