/* ── Base & Reset ───────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; }
img { max-width: 100%; display: block; }

/* ── Navigation ──────────────────────────────────── */
#site-header {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}
#site-header.scrolled {
    background: rgba(10, 15, 26, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #2dd4bf;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}
.nav-link:hover {
    color: #fff !important;
}
.mobile-nav-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.25rem;
}
.mobile-nav-link:last-child {
    border-bottom: none;
}

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

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

/* ── Button focus styles ─────────────────────────── */
button:focus-visible,
a:focus-visible {
    outline: 2px solid #2dd4bf;
    outline-offset: 2px;
}

/* ── Selection ───────────────────────────────────── */
::selection {
    background: rgba(13, 148, 136, 0.3);
    color: #fff;
}

/* ── Scrollbar ───────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0f172a; }
::-webkit-scrollbar-thumb { background: #115e59; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #0d9488; }