/* Main Navigation */
.main-navigation {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 2px solid transparent;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    text-decoration: none;
    color: white;
    transform: translateY(-2px);
}

.nav-btn.active {
    background: white;
    color: #667eea;
    border-color: white;
}

.nav-btn.active:hover {
    background: #f8f9fa;
    color: #667eea;
}

/* Responsive Navigation */
@media (max-width: 768px) {
    .main-navigation {
        gap: 0.5rem;
    }
    
    .nav-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}