header.navbar {
    background-color: white;
    color: #372be4;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

header .brand img {
    height: 50px;
}

header .username-btn {
    background-color: #1a73e8;
    border: 2px solid #ffffff;
    color: #fff;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 15px;
    border-radius: 20px;
    transition: background 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

header .username-btn:hover {
    background-color: #135abc;
    transform: scale(1.05);
}

header .username-btn i {
    font-size: 20px;
}