body {
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    margin: 0;
    padding: 0;
}

.permission-notice {
    background-color: #fff3cd;
    color: #856404;
    padding: 15px;
    margin: 20px 0;
    border: 1px solid #ffeeba;
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
}

nav {
    background: #222;
    padding: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-buttons {
    display: flex;
}

nav button {
    color: #fff;
    background: #444;
    border: none;
    margin-right: 10px;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 3px;
}

nav button:hover {
    background: #666;
}

.user-controls {
    display: flex;
    align-items: center;
}

#user-info {
    color: #fff;
    margin-right: 15px;
}

.logout-button {
    background: #dc3545;
}

.logout-button:hover {
    background: #c82333;
}

main {
    padding: 20px;
}

.tab {
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    margin-top: 10px;
}

form label {
    display: block;
    margin-bottom: 10px;
}

form input, form textarea {
    width: 100%;
    padding: 6px;
    margin-top: 4px;
    box-sizing: border-box;
}

button[type="submit"] {
    background: #007bff;
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 3px;
    cursor: pointer;
}

button[type="submit"]:hover {
    background: #0056b3;
}

#user-message {
    margin-top: 10px;
    color: green;
}