header {
    background: white;
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 24px;
    color: var(--primary);
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary);
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
    background: rgba(52, 152, 219, 0.1);
}

.nav-links a.active {
    color: var(--primary);
    background: rgba(52, 152, 219, 0.1);
}