/* ═══════════════════════════════════════
   nav.css — Navigation & mobile menu
   Delfos Estudios © 2026
═══════════════════════════════════════ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(11, 22, 40, .96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(201, 168, 76, .15);
    transition: var(--t);
}

.nav.scrolled {
    box-shadow: 0 4px 32px rgba(0, 0, 0, .25);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 0 var(--space-xl);
    height: 70px;
    gap: var(--space-xl);
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-delta {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-lt) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Libre Baskerville', serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--navy);
    flex-shrink: 0;
    box-shadow: 0 2px 16px rgba(201, 168, 76, .35);
}

.logo-name {
    font-family: 'Libre Baskerville', serif;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    letter-spacing: .02em;
    display: block;
}

.logo-sub {
    font-size: 10px;
    color: var(--gold-lt);
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-top: 2px;
    display: block;
}

/* Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.nav-link {
    padding: 8px 14px;
    border-radius: 5px;
    font-size: 13.5px;
    font-weight: 500;
    color: #bbb;
    transition: var(--t);
    white-space: nowrap;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, .07);
}

.nav-link.active {
    color: var(--gold-lt);
}

.nav-cta {
    padding: 9px 20px;
    border-radius: 5px;
    background: var(--gold);
    color: var(--navy);
    font-size: 13px;
    font-weight: 600;
    transition: var(--t);
    white-space: nowrap;
    margin-left: 8px;
}

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

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--t);
}

/* Mobile menu */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: var(--navy);
    padding: 90px var(--space-xl) 40px;
    flex-direction: column;
    gap: 8px;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu .nav-link {
    font-size: 18px;
    padding: 14px 0;
    color: #bbb;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.mobile-menu .nav-cta {
    margin-top: 16px;
    text-align: center;
    padding: 14px;
    border-radius: 5px;
}

/* ── Responsive ── */
@media (max-width: 768px) {

    .nav-links,
    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }
}