body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #1e1e2e;
    color: #fff;
    padding: 20px;
    margin: 0;
    direction: rtl;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    background: #2d2d44;
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

h1, h2 {
    text-align: center;
    color: #7c9eff;
}

#user-info {
    background: #3a3a5a;
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 20px;
}

#groups-list {
    background: #3a3a5a;
    padding: 15px;
    border-radius: 12px;
    min-height: 100px;
}

button {
    display: block;
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    border: none;
    border-radius: 12px;
    background: #7c9eff;
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background: #5a7ad9;
}