/* ─────────────────────────────────────────
   VIPAX · Navegação
   Topo fixo, transparente → escura ao rolar
───────────────────────────────────────── */

#main-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 600;
    padding: 1.8rem 3.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.5s ease, padding 0.5s ease, border-color 0.5s ease;
    border-bottom: 1px solid transparent;
}

#main-nav.scrolled {
    background: rgba(6,13,7,0.92);
    backdrop-filter: blur(14px);
    padding: 1.1rem 3.5rem;
    border-bottom-color: var(--amber-12);
}

.nav-logo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--cream);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-family: 'Lora', serif;
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--cream-70);
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -3px; left: 0;
    width: 0; height: 1px;
    background: var(--amber);
    transition: width 0.35s ease;
}

.nav-links a:hover { color: var(--cream); }
.nav-links a:hover::after { width: 100%; }