* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    .auth-container, .app-container {
      max-width: 600px;
      margin: 0 auto;
      background: white;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    }

    .subtitle {
      text-align: center;
      color: #666;
      margin-bottom: 30px;
      font-size: 0.95em;
    }
    
    .form-group {
      margin-bottom: 15px;
    }
    
    label {
      display: block;
      margin-bottom: 5px;
      color: #555;
      font-weight: 500;
    }
    
    input[type="text"], input[type="password"], textarea {
      width: 100%;
      padding: 12px;
      border: 2px solid #e0e0e0;
      border-radius: 8px;
      font-size: 1em;
      transition: border-color 0.3s;
    }
    
    input:focus, textarea:focus {
      outline: none;
      border-color: #667eea;
    }
    
    textarea {
      resize: vertical;
      min-height: 80px;
      font-family: inherit;
    }
    
    button {
      width: 100%;
      padding: 12px;
      background: #0022dd;
      color: white;
      border: none;
      border-radius: 8px;
      font-size: 1em;
      font-weight: 600;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s;
      margin-top: 10px;
    }
    
    button:hover {
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    }
    
    button:disabled {
      background: #ccc;
      cursor: not-allowed;
      transform: none;
    }
    
    .toggle-auth {
      text-align: center;
      margin-top: 20px;
      color: #666;
    }
    
    .message {
      background: #f8f9fa;
      border-left: 4px solid #667eea;
      border-radius: 8px;
      padding: 15px;
      margin-bottom: 12px;
    }
    
    .message-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 8px;
    }
    
    .username {
      font-weight: 700;
      color: #667eea;
      font-size: 0.95em;
    }
    
    .timestamp {
      font-size: 0.85em;
      color: #999;
    }
    
    .message-text {
      color: #333;
      line-height: 1.5;
      word-wrap: break-word;
    }
    
    .user-info {
      background: #f0f0f0;
      padding: 10px 15px;
      border-radius: 8px;
      margin-bottom: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .user-info span {
      color: #555;
      font-weight: 500;
    }
    
    .logout-btn {
      background: #dc3545;
      padding: 6px 12px;
      font-size: 0.9em;
      width: auto;
      margin: 0;
    }
    
    .logout-btn:hover {
      background: #c82333;
    }
    
    .messages-container {
      max-height: 500px;
      overflow-y: auto;
      margin-top: 20px;
    }
    
    .error {
      background: #fee;
      border: 1px solid #fcc;
      color: #c00;
      padding: 10px;
      border-radius: 6px;
      margin-bottom: 15px;
    }
    
    .hidden {
      display: none;
    }

  /* Design Modified from: Deepak Pathak, Jon Barron, and Saurabh Gupta. */
  a {
  color: #1772d0;
  text-decoration:none;
  }
  a:focus, a:hover {
  color: #f09228;
  text-decoration:none;
  }
  body,td,th {
    font-family: 'Titillium Web', Verdana, Helvetica, sans-serif;
    font-size: 16px;
    font-weight: 400
  }
  heading {
    font-family: 'Titillium Web', Verdana, Helvetica, sans-serif;
    font-size: 17px; /* 19 */
    font-weight: 600 /* 1000 */
  }
  hr
  {
    border: 0;
    height: 1px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0));
  }
  strong {
    font-family: 'Titillium Web', Verdana, Helvetica, sans-serif;
    font-size: 16px;
    font-weight: 600 /* 800 */
  }
  strongred {
    font-family: 'Titillium Web', Verdana, Helvetica, sans-serif;
    color: 'red' ;
    font-size: 16px
  }
  sectionheading {
    font-family: 'Titillium Web', Verdana, Helvetica, sans-serif;
    font-size: 22px;
    font-weight: 600
  }
  pageheading {
    font-family: 'Titillium Web', Verdana, Helvetica, sans-serif;
    font-size: 38px;
    font-weight: 400
  }
  .center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 80%;
  }
  .ImageBorder
  {
      border-width: 1px;
      border-color: Black;
  }
  span.highlight {
  background-color: #ffffd0;
  }
      :root {
      --bg: #0b0b0b;
      --panel: #111;
      --green: #2dff7a;
      --green-dark: #1ecb5a;
      --text: #eaeaea;
      --muted: #777;
      --border: #1f1f1f;
    }

    * {
      box-sizing: border-box;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      display: flex;
      justify-content: center;
      padding: 40px 16px;
    }

    .container {
      width: 100%;
      max-width: 600px;
      background: var(--panel);
      border-radius: 14px;
      padding: 24px;
      box-shadow: 0 0 40px rgba(0,0,0,0.6);
    }

    h1 {
      text-align: center;
      color: var(--green);
      margin-top: 0;
      margin-bottom: 20px;
    }

    form {
      display: grid;
      grid-template-columns: 1fr 1fr auto;
      gap: 10px;
      margin-bottom: 24px;
    }

    input, select {
      background: #000;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 12px;
      color: var(--text);
      outline: none;
    }

    input:focus, select:focus {
      border-color: var(--green);
    }

    button {
      background: var(--green);
      border: none;
      border-radius: 8px;
      padding: 12px 16px;
      font-weight: 600;
      cursor: pointer;
    }

    button:hover {
      background: var(--green-dark);
    }

    .category {
      margin-bottom: 22px;
    }

    .category h2 {
      margin: 0 0 10px;
      font-size: 1.1rem;
      color: var(--green);
    }

    ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    li {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #0d0d0d;
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 10px 14px;
      margin-bottom: 8px;
    }

    a {
      color: var(--green);
      text-decoration: none;
      word-break: break-all;
    }

    a:hover {
      text-decoration: underline;
    }

    .actions {
      display: flex;
      gap: 8px;
    }

    .actions button {
      background: transparent;
      border: 1px solid #333;
      color: var(--muted);
      padding: 5px 9px;
      border-radius: 6px;
      font-size: 0.8rem;
    }

    .actions button:hover {
      color: var(--green);
      border-color: var(--green);
    }