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

.login-container {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 320px;
    text-align: center;
}

.login-container h2 {
    margin-bottom: 1.5rem;
}

.login-container input {
    width: 100%;
    padding: 10px;
    margin: 0.5rem 0;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.login-container button {
    width: 100%;
    padding: 10px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
}

.login-container button:hover {
    background: #0056b3;
}

.error {
    color: red;
    margin-top: 1rem;
}

nav {
    position: absolute;
    top: 1rem;
    right: 2rem;
}

main {
    text-align: center;
    margin-top: 10vh;
}

.topnav {
    background-color: #333;
    overflow: hidden;
    display: flex;
    align-items: center;
    padding: 0 10px;
}

.topnav .logo {
    color: white;
    font-weight: bold;
    padding: 14px 16px;
    margin-right: auto;
}

.topnav a {
    float: left;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

.topnav a:hover {
    background-color: #ddd;
    color: black;
}

.topnav .logout {
    background: #c0392b;
    color: white;
    border-radius: 6px;
}

main {
    padding: 2rem;
}

#file-manager {
    margin-top: 20px;
}

#file-list ul {
    list-style: none;
    padding-left: 0;
}

#file-list li {
    padding: 4px 0;
    border-bottom: 1px dotted #ccc;
}

#file-list li:hover {
    background: #f0f0f0;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-family: sans-serif;
}

th, td {
    padding: 8px;
    text-align: left;
}

th {
    background: #f2f2f2;
}

tr:hover {
    background-color: #f9f9f9;
}

button {
    background: none;
    border: none;
    cursor: pointer;
}

button:hover {
    text-decoration: underline;
}
.status {
    font-weight: bold;
    padding: 4px 10px;
    border-radius: 20px;
    display: inline-block;
    font-size: 0.95rem;
}

.status.online {
    background-color: #d4edda;
    color: #155724;
}

.status.offline {
    background-color: #f8d7da;
    color: #721c24;
}