body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 10px;
}

.status-box {
    margin: 15px 0;
    line-height: 1.6;
    font-weight: bold;
}

.online { color: #2ecc71; }
.offline { color: #e74c3c; }

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background-color: #2980b9;
}