/* =========================================
   NAVBAR.CSS — Site-wide navigation header
   ========================================= */

#navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow 0.3s ease;
}

#navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

/* Container */
.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.9rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

/* ── Logo ── */
.logo {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    cursor: pointer;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.1rem 0.35rem;
    border-radius: 0.2rem;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.2;
}

.logo-letter.blue {
    background: var(--color-blue);
}

.logo-letter.red {
    background: var(--color-red);
}

.logo-tagline {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-gray);
    margin-left: 0.6rem;
    white-space: nowrap;
}

/* ── Nav Links ── */
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    list-style: none;
}

.nav-links a {
    display: block;
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-dark);
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--color-light);
    color: var(--color-blue);
}

/* CTA link */
.nav-links .nav-cta a {
    background: var(--color-blue);
    color: var(--color-white);
    padding: 0.5rem 1.1rem;
}

.nav-links .nav-cta a:hover {
    background: #1e3a8a;
}

/* ── Hamburger (mobile) ── */
.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--color-dark);
    padding: 0.25rem;
    cursor: pointer;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        align-items: stretch;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-border);
        padding: 0.75rem 1.5rem 1rem;
        gap: 0.2rem;
        box-shadow: var(--shadow-md);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 0.6rem 0.75rem;
    }
}