body {      font-family: Arial, sans-serif;
      background: #0e0e0e;
      color: #f0f0f0;
      margin: 0;
      padding: 0;
    }

    /* Header */
    .header {
      background-color: #1f1f1f;
      padding: 15px 20px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.3);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .header h1 {
      margin: 0;
      font-size: 1.5em;
      color: #ffffff;
    }

    .container {
      max-width: 1000px;
      margin: 30px auto;
      padding: 0 15px;
    }

    .card {
      background: #1a1a1a;
      border-radius: 10px;
      box-shadow: 0 0 10px rgba(255,255,255,0.05);
      padding: 20px;
      margin-bottom: 20px;
    }

    .card h3 {
      margin-top: 0;
    }

    .card img, .card video {
      max-width: 100%;
      border-radius: 10px;
      margin-top: 15px;
    }

    .card video {
      outline: none;
    }

    .author {
      font-weight: bold;
      color: #8ab4f8;
    }

    .timestamp {
      font-size: 0.85em;
      color: #aaa;
    }

    .loading {
      text-align: center;
      font-size: 1.2em;
      color: #ccc;
      margin-top: 50px;
    }

    /* FAB */
    .fab {
      position: fixed;
      bottom: 25px;
      right: 25px;
      background: #3a3aff;
      color: white;
      border: none;
      border-radius: 50%;
      width: 60px;
      height: 60px;
      font-size: 30px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.4);
      cursor: pointer;
      transition: background 0.2s ease;
      z-index: 999;
    }

    .fab:hover {
      background: #5555ff;
    }