* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html, body {
    height: 100%;
  }

  body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(to bottom, #1b003c, #6200ea);
    color: #fff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    text-align: center;
  }

  h1 {
    font-size: 2.2rem;
    margin-top: 20px;
    margin-bottom: 10px;
    color: #ffeb3b;
  }

  p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
  }

  .btn-container {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 16px;
    max-width: 100%;
    overflow-x: auto;
    margin-bottom: 50px;
    padding: 10px;
  }

  .keyword-btn {
    background: linear-gradient(to right, #00f0ff, #a300ff);
    color: white;
    font-weight: bold;
    text-decoration: none;
    border: none;
    border-radius: 14px;
    padding: 14px 28px;
    min-width: 180px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(163, 0, 255, 0.5);
    transition: transform 0.2s, box-shadow 0.3s;
    display: inline-block;
    flex: 0 0 auto;
  }

  .keyword-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 240, 255, 0.5);
  }

  .sidebar-toggle {
    display: none;
    font-size: 2rem;
    color: #fff;
    background: none;
    border: none;
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 999;
    cursor: pointer;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: -260px;
    width: 240px;
    height: 100%;
    background: linear-gradient(to bottom, #1b003c, #6200ea);
    padding: 80px 20px 20px;
    transition: left 0.3s ease-in-out;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
    z-index: 998;
  }

  .sidebar.active {
    left: 0;
  }

  .sidebar a {
    display: block;
    margin-bottom: 16px;
    padding: 12px;
    border-radius: 12px;
    background: linear-gradient(to right, #00f0ff, #a300ff);
    color: white;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(163, 0, 255, 0.5);
  }

  .sidebar a:hover {
    transform: scale(1.05);
  }

  .content {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    flex: 1 0 auto; /* penting agar mendorong footer ke bawah */
  }

  .content h2 {
    font-size: 1.8rem;
    color: #ffeb3b;
    margin-bottom: 10px;
    text-align: center;
  }

  .content h3 {
    font-size: 1.4rem;
    color: #00f0ff;
    margin-top: 20px;
    margin-bottom: 10px;
  }

  .content p {
    font-size: 1.1rem;
    color: #eee;
    line-height: 1.6;
    margin-bottom: 15px;
  }

  .content ul,
  .content ol {
    padding-left: 20px;
    margin-bottom: 15px;
  }

  .content li {
    margin-bottom: 8px;
    font-size: 1.05rem;
    color: #ddd;
  }

  footer {
    text-align: center;
    padding: 20px;
    font-size: 0.95rem;
    color: #fff;
    background: transparent; /* agar menyatu */
  }

  @media (max-width: 768px) {
    .btn-container {
      display: none;
    }

    .sidebar-toggle {
      display: block;
    }

    h1 {
      font-size: 1.6rem;
    }

    p {
      font-size: 1rem;
      padding: 0 12px;
    }

    .content {
      padding: 16px 10px;
    }

    .content h2 {
      font-size: 1.5rem;
    }

    .content h3 {
      font-size: 1.2rem;
    }

    .content p,
    .content li {
      font-size: 1rem;
    }
  }