body {
    font-family: 'Segoe UI', sans-serif;
    background: #f4f6f9;
    margin: 0;
    padding: 0;
  }
  header {
    background: #007BFF;
    color: white;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  nav a {
    margin: 0 10px;
    color: white;
    text-decoration: none;
    font-weight: bold;
  }
  nav a:hover { text-decoration: underline; }
  .clock {
    font-size: 18px;
  }
  .container {
    padding: 40px;
  }
  .entry {
    background: #fff;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  }
  .btn {
    background: #007BFF;
    color: white;
    padding: 8px 16px;
    margin-top: 8px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  .btn:hover { background: #0056b3; }