body {
    font-family: 'Segoe UI', sans-serif;
    background: #f5f6fa;
    color: #333;
  }
  .tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    border-bottom: 2px solid #ccc;
    margin-bottom: 1rem;
  }
  .tab {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    background: #ebe4e4;
    margin-right: 5px;
    border-radius: 8px 8px 0 0;
    transition: background 0.3s;
    text-decoration: none;
    color: #333;
    font-weight: bold;
  }
  .tab.active {
    background: #3636b2;
    color: white;
    font-weight: bold;
  }
  .tab-content {
    display: none;
    padding: 1.5rem;
    border-radius: 0 0 10px 10px;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    animation: fadeIn 0.3s ease-in-out;
  }
  .tab-content.active {
    display: block;
  }
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @media (max-width: 600px) {
    .tabs {
      flex-direction: column;
    }
    .tab {
      margin-bottom: 5px;
    }
  }