.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background-color: rgba(10, 10, 12, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    height: var(--header-height);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-6);
    height: 100%;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bg-card), var(--bg-elevated));
    border: 1px solid var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    color: var(--gold);
    font-size: 1rem;
    flex-shrink: 0;
}

.brand-name {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.04em;
}

.brand-name span { color: var(--gold); }

.nav-links {
    display: flex;
    gap: var(--space-6);
    align-items: center;
}

.nav-links a {
    font-size: 0.85rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--text-muted);
    transition: color var(--transition);
    position: relative;
    padding: var(--space-1) 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -8px;
    height: 2px;
    background-color: var(--gold);
}

.btn-nav-cta {
    background-color: var(--gold);
    color: var(--bg-base) !important;
    padding: var(--space-2) var(--space-4) !important;
    font-weight: 600;
    font-size: 0.8rem !important;
    border-radius: var(--radius);
    transition: background var(--transition), transform var(--transition);
}

.btn-nav-cta:hover {
    background-color: var(--gold-bright);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--line);
    color: var(--text-primary);
    padding: var(--space-3);
    border-radius: var(--radius);
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: transform var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: "";
    position: absolute;
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

/* ============================================================
   BRAND — Logo imagen (reemplaza brand-mark + brand-name)
   ============================================================ */
.brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.brand-logo {
    height: 48px;
    width: auto;
    display: block;
}

.brand-logo[alt]:not([src]),
.brand-logo[src=""] {
    height: 48px;
    min-width: 200px;
    background: linear-gradient(135deg, #d4af37, #8b6914);
    border-radius: 4px;
}

@media (max-width: 640px) {
    .brand-logo {
        height: 40px;
    }
}

.admin-body .brand-logo {
    height: 44px;
}