/* Header Navigation - Google-inspired */
.header {
    position: sticky;
    top: 0;
    background: #fff;
    border-bottom: 1px solid #dadce0;
    z-index: 1000;
    transition: box-shadow 0.2s;
}

.header.scrolled {
    box-shadow: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0;
    height: 56px;
}

.nav-brand a {
    text-decoration: none;
    transition: opacity 0.2s;
}

.nav-brand a:hover {
    opacity: 0.7;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    text-decoration: none;
    color: #5f6368;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s;
    position: relative;
    padding: 8px 16px;
    border-radius: 20px;
}

.nav-link::after {
    display: none;
}

.nav-link:hover {
    color: #202124;
    background: #f1f3f4;
}

.nav-link-contact {
    background: var(--color-primary-main);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
}

.nav-link-contact::after {
    display: none;
}

.nav-link-contact:hover {
    background: var(--color-primary-dark);
    color: white;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.2s;
}

.nav-toggle:hover {
    background: #f1f3f4;
}

.hamburger {
    display: block;
    width: 20px;
    height: 2px;
    background: #5f6368;
    position: relative;
    transition: background 0.2s;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background: #5f6368;
    transition: transform 0.2s;
}

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

.hamburger::after {
    bottom: -6px;
}

/* Mobile Menu Active State */
.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg) translate(4px, -4px);
}

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

    .nav-menu {
        position: fixed;
        top: 57px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 8px;
        border-bottom: 1px solid #dadce0;
        box-shadow: 0 1px 3px 1px rgba(60, 64, 67, 0.15);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.2s;
        gap: 2px;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        font-size: 14px;
        padding: 12px 16px;
        width: 100%;
        border-radius: 8px;
    }
}