/* css/nav.css */
:root {
    --primary-color: #2563eb;
    --secondary-color: #4f46e5;
    --text-color: #1f2937;
    --light-bg: #f9fafb;
    --dark-bg: #111827;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    width: 100%;
    position: relative;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    margin-right: 20px;
}

.logo i {
    margin-right: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-links li:last-child {
    margin-right: 0;
}

.social-nav {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-left: auto;
}

.social-nav-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--light-bg);
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.social-nav-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* CSS cho responsive */
@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
    }
    
    .nav-links {
        position: static;
        transform: none;
        order: 3;
        width: 100%;
        margin-top: 1rem;
        justify-content: center;
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .social-nav {
        gap: 0.5rem;
    }
}