body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 20px;
    background-color: #f4f4f9;
    color: #333;
}
.container {
    max-width: 800px;
    margin: auto;
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
}
h1 {
    font-size: 2.2em;
    text-align: center;
    color: #004085;
    border-bottom: 2px solid #004085;
    padding-bottom: 10px;
}
h2 {
    font-size: 1.8em;
    margin-top: 30px;
    color: #007bff;
    padding-bottom: 5px;
}
ul {
    list-style-type: none;
    padding: 0;
}
li {
    background: #e9ecef;
    margin-bottom: 8px;
    padding: 12px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s;
}
li:hover {
    background-color: #dee2e6;
}
a {
    text-decoration: none;
    color: #0056b3;
    font-weight: bold;
}
a:hover {
    text-decoration: underline;
}
.timestamp {
    font-size: 0.8em;
    color: #6c757d;
}
.empty-message {
    padding: 20px;
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    border-radius: 5px;
    text-align: center;
    color: #856404;
}