.main-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #e7e7e7;
}

.navbar-brand img {
    border-radius: 50%;
}

.navbar-nav .nav-link {
    color: #555;
    font-weight: 500;
}

#user-menu .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 8px;
}

#guest-menu .btn {
    margin-left: 10px;
}

.notification-container .btn {
    font-size: 1.2rem;
}

.notification-count {
    position: absolute;
    top: -5px;
    right: -5px;
    padding: 2px 5px;
    border-radius: 50%;
    background: red;
    color: white;
    font-size: 0.75rem;
}