/* Reset và các biến cơ bản */
    :root {
      --page-b52clublogin__primary-color: #f7b32b; /* Màu vàng cam */
      --page-b52clublogin__secondary-color: #2c3e50; /* Màu xanh đậm */
      --page-b52clublogin__accent-color: #e74c3c; /* Màu đỏ */
      --page-b52clublogin__text-color: #ecf0f1; /* Màu trắng xám */
      --page-b52clublogin__dark-bg: #1a1a1a;
      --page-b52clublogin__light-bg: #2d2d2d;
      --page-b52clublogin__border-radius: 8px;
    }

    .page-b52clublogin {
      font-family: 'Arial', sans-serif;
      color: var(--page-b52clublogin__text-color);
      background-color: var(--page-b52clublogin__dark-bg);
      line-height: 1.6;
      overflow-x: hidden; /* Ngăn chặn scroll ngang */
    }

    .page-b52clublogin h1,
    .page-b52clublogin h2,
    .page-b52clublogin h3 {
      color: var(--page-b52clublogin__primary-color);
      text-align: center;
      margin-bottom: 20px;
    }

    .page-b52clublogin h1 {
      font-size: 2.5em;
      margin-top: 20px;
    }

    .page-b52clublogin h2 {
      font-size: 2em;
      margin-top: 30px;
    }

    .page-b52clublogin h3 {
      font-size: 1.5em;
      margin-top: 25px;
    }

    .page-b52clublogin p {
      margin-bottom: 15px;
      text-align: justify;
    }

    .page-b52clublogin__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    .page-b52clublogin__section {
      padding: 40px 0;
      background-color: var(--page-b52clublogin__light-bg);
      margin-bottom: 20px;
      border-radius: var(--page-b52clublogin__border-radius);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-b52clublogin__section--dark {
      background-color: var(--page-b52clublogin__secondary-color);
    }

    /* Hero Section */
    .page-b52clublogin__hero-section {
      position: relative;
      width: 100%;
      min-height: 400px; /* Chiều cao tối thiểu cho banner */
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding-top: 10px; /* Đảm bảo không bị che bởi header cố định */
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-b52clublogin__hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.8));
      z-index: 1;
    }

    .page-b52clublogin__hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      padding: 20px;
    }

    .page-b52clublogin__hero-content p {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: var(--page-b52clublogin__text-color);
    }

    .page-b52clublogin__hero-button {
      display: inline-block;
      background-color: var(--page-b52clublogin__primary-color);
      color: var(--page-b52clublogin__secondary-color);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-b52clublogin__hero-button:hover {
      background-color: #e6a200;
      transform: translateY(-3px);
    }

    /* Floating Login Button */
    .page-b52clublogin__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-b52clublogin__accent-color);
      color: white;
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      display: none; /* Mặc định ẩn trên desktop */
    }

    .page-b52clublogin__floating-button:hover {
      background-color: #c0392b;
      transform: translateY(-3px);
    }

    @media (max-width: 768px) {
      .page-b52clublogin__floating-button {
        display: block; /* Hiển thị trên mobile */
      }
    }

    /* Game Categories */
    .page-b52clublogin__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      padding: 20px 0;
    }

    .page-b52clublogin__game-card {
      background-color: var(--page-b52clublogin__dark-bg);
      border-radius: var(--page-b52clublogin__border-radius);
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-b52clublogin__secondary-color);
      box-sizing: border-box; /* Quan trọng cho responsive */
    }

    .page-b52clublogin__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    }

    .page-b52clublogin__game-card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%; /* Đảm bảo hình ảnh không tràn */
      box-sizing: border-box;
    }

    .page-b52clublogin__game-card-content {
      padding: 20px;
    }

    .page-b52clublogin__game-card-content h3 {
      margin-top: 0;
      color: var(--page-b52clublogin__primary-color);
      font-size: 1.3em;
      text-align: center;
    }

    .page-b52clublogin__game-card-content p {
      font-size: 0.95em;
      color: var(--page-b52clublogin__text-color);
      text-align: center;
    }

    /* How-to Guide */
    .page-b52clublogin__guide-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
    }

    .page-b52clublogin__guide-item {
      background-color: var(--page-b52clublogin__dark-bg);
      padding: 25px;
      border-radius: var(--page-b52clublogin__border-radius);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      flex: 1 1 calc(33% - 20px); /* 3 items per row on desktop */
      min-width: 280px;
      box-sizing: border-box;
      border: 1px solid var(--page-b52clublogin__secondary-color);
    }

    .page-b52clublogin__guide-item h3 {
      color: var(--page-b52clublogin__primary-color);
      margin-top: 0;
      margin-bottom: 15px;
      font-size: 1.4em;
      text-align: left;
    }

    .page-b52clublogin__guide-item p {
      font-size: 1em;
      color: var(--page-b52clublogin__text-color);
      text-align: left;
    }

    /* Promotions */
    .page-b52clublogin__promo-card {
      background-color: var(--page-b52clublogin__dark-bg);
      padding: 30px;
      border-radius: var(--page-b52clublogin__border-radius);
      text-align: center;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      border: 1px solid var(--page-b52clublogin__primary-color);
    }

    .page-b52clublogin__promo-card h3 {
      color: var(--page-b52clublogin__accent-color);
      font-size: 2em;
      margin-bottom: 15px;
    }

    .page-b52clublogin__promo-card p {
      font-size: 1.1em;
      margin-bottom: 25px;
    }

    .page-b52clublogin__promo-button {
      display: inline-block;
      background-color: var(--page-b52clublogin__accent-color);
      color: white;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-b52clublogin__promo-button:hover {
      background-color: #c0392b;
      transform: translateY(-3px);
    }

    /* FAQ Section */
    .page-b52clublogin__faq-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-b52clublogin__faq-item {
      background-color: var(--page-b52clublogin__dark-bg);
      margin-bottom: 10px;
      border-radius: var(--page-b52clublogin__border-radius);
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--page-b52clublogin__secondary-color);
    }

    .page-b52clublogin__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: var(--page-b52clublogin__secondary-color);
      color: var(--page-b52clublogin__text-color);
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-b52clublogin__faq-question h3 {
      margin: 0;
      color: inherit;
      text-align: left;
      flex-grow: 1;
      pointer-events: none; /* Ngăn chặn sự kiện click trên h3 */
    }

    .page-b52clublogin__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn chặn sự kiện click trên toggle */
    }

    .page-b52clublogin__faq-item.active .page-b52clublogin__faq-toggle {
      transform: rotate(45deg); /* Biến + thành X hoặc - */
    }

    .page-b52clublogin__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      background-color: var(--page-b52clublogin__dark-bg);
      color: var(--page-b52clublogin__text-color);
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-b52clublogin__faq-item.active .page-b52clublogin__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px !important;
      opacity: 1;
    }

    .page-b52clublogin__faq-answer p {
      margin-bottom: 0;
      text-align: left;
    }

    /* General Image Styling */
    .page-b52clublogin img {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: var(--page-b52clublogin__border-radius);
      box-sizing: border-box;
      border: none; /* Đảm bảo không có viền filter */
      filter: none; /* Đảm bảo không có filter */
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-b52clublogin__hero-section {
        min-height: 300px;
        padding-top: 10px; /* Đảm bảo không bị che bởi header cố định */
      }

      .page-b52clublogin h1 {
        font-size: 2em;
      }

      .page-b52clublogin h2 {
        font-size: 1.7em;
      }

      .page-b52clublogin h3 {
        font-size: 1.3em;
      }

      .page-b52clublogin__hero-content p {
        font-size: 1em;
      }

      .page-b52clublogin__hero-button,
      .page-b52clublogin__promo-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-b52clublogin__game-grid {
        grid-template-columns: 1fr; /* Stack cards on mobile */
      }

      .page-b52clublogin__guide-item {
        flex: 1 1 100%; /* Full width on mobile */
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 20px;
      }

      .page-b52clublogin__guide-list {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-b52clublogin__faq-question {
        font-size: 1em;
        padding: 12px 15px;
      }

      .page-b52clublogin__faq-answer {
        padding: 0 15px;
      }

      .page-b52clublogin__faq-item.active .page-b52clublogin__faq-answer {
        padding: 15px !important;
      }

      .page-b52clublogin__floating-button {
        padding: 12px 20px;
        font-size: 1em;
        bottom: 15px;
        right: 15px;
      }

      /* Ensure all images are responsive */
      .page-b52clublogin img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-b52clublogin__game-card-image {
        max-width: 100% !important;
        height: 150px !important; /* Adjust height for mobile if needed */
        box-sizing: border-box !important;
      }
    }