body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    color: #333;
}
h1 {
    text-align: center;
    color: #2c3e50;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}
th {
    background-color: #3498db;
    color: white;
}
tr:nth-child(even) {
    background-color: #f2f2f2;
}
tr:hover {
    background-color: #e3f2fd;
}
.status {
    padding: 5px 10px;
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
}
.online {
    background-color: #2ecc71;
    color: white;
}
.offline {
    background-color: #e74c3c;
    color: white;
}
.unknown {
    background-color: #f39c12;
    color: white;
}
.last-check {
    font-size: 0.9em;
    color: #7f8c8d;
}
/* Navigation */
.hamburger {
    cursor: pointer;
    font-size: 24px;
    position: fixed;
    top: 15px;
    left: 15px;
    z-index: 1000;
}
.nav-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100%;
    background-color: #2c3e50;
    color: white;
    z-index: 999;
    padding-top: 60px;
}
.nav-menu a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 15px;
    border-bottom: 1px solid #34495e;
}
.nav-menu a:hover {
    background-color: #3498db;
}
.close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
}
.settings-form {
    padding: 20px;
    max-width: 500px;
    margin: 0 auto;
}
.settings-form label {
    display: block;
    margin-bottom: 5px;
}
.settings-form select {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
}
.settings-form button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
}
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }
}