/* ====================================
   SQUINTPRO LANDING - HEADER / NAV
   ==================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: transparent;
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.header.scrolled {
    background: rgba(var(--deep-blue-rgb), 0.96);
    box-shadow: 0 1px 0 var(--border-on-dark), var(--shadow-md);
    backdrop-filter: blur(8px);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    padding: 1.1rem var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.header.scrolled .navbar {
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
}

.navbar-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.navbar-brand img {
    height: 34px;
    width: auto;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.74rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-on-dark);
    padding: 0.4rem 0;
    border-bottom: 2px solid transparent;
    transition: color var(--transition-normal), border-color var(--transition-normal);
}

.nav-link:hover {
    color: var(--white);
}

.nav-link.active {
    color: var(--white);
    border-bottom-color: var(--electric-blue);
}

.nav-cta {
    padding: 0.65rem 1.25rem;
    font-size: 0.72rem;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    border-radius: var(--radius-sm);
}

.mobile-menu-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--white);
    border-radius: var(--radius-full);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}