html, body {
      margin: 0;
      padding: 0;
      height: 100%;
      font-family: Arial, sans-serif;
      background-color: #000;
      color: white;
      overflow: hidden;
    }

    .top-fixed {
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 999;
      background-color: #000;
    }

    .iframe-wrapper {
      width: 100%;
      background-color: transparent;
      display: flex;
      justify-content: center;
    }

    .iframe-inner {
      width: 100%;
      max-width: 960px;
      aspect-ratio: 16 / 9;
      margin: 0 auto;
      background-color: #000;
      border: 5px solid white;
      box-sizing: border-box;
      position: relative;
    }

    iframe {
      width: 100%;
      height: 100%;
      border: none;
      display: block;
    }

    .tab-menu {
      display: flex;
      justify-content: center;
      background-color: #191919;
      flex-wrap: wrap;
    }

    .tab {
      flex: 1;
      text-align: center;
      padding: 10px;
      cursor: pointer;
      font-weight: bold;
      color: #51ffa5;
      background-color: #191919;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-bottom: 4px solid #3d3d3d;
    }

    .tab.active {
      background-color: #101f11;
      border-bottom: 4px solid #51ffa5;
    }

    .tab svg {
      width: 24px;
      height: 24px;
      fill: #51FFA5;
    }

    .content-scroll {
      position: absolute;
      top: 0;
      bottom: 0;
      width: 100%;
      overflow-y: auto;
      background: #000;
      padding-top: var(--contentTopOffset, 0px);
    }

    .tab-content {
      display: none;
      box-sizing: border-box;
      padding: 20px 10px;
    }

    .tab-content.active {
      display: block;
    }

    .channel-search {
      margin-bottom: 15px;
      text-align: center;
    }

    .channel-search input {
      padding: 8px 12px;
      width: 90%;
      max-width: 400px;
      border: 2px solid #00ff99;
      border-radius: 8px;
      background-color: #111;
      color: white;
      font-size: 16px;
      transition: border-color 0.3s ease;
    }

    .channel-search input:hover,
    .channel-search input:focus,
    .channel-search input:active {
      border-color: yellow;
      outline: none;
    }

    .channels-grid {
      display: grid;
      gap: 12px;
      grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }

    .channel-card {
      background: #1a1a1a;
      border: 2px solid #00ff99;
      border-radius: 12px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      cursor: pointer;
      transition: border-color 0.3s;
    }

    .channel-card.active,
    .channel-card:hover {
      border-color: yellow;
    }

    .channel-card img {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      background-color: #000;
      transition: opacity 0.3s ease;
    }

    .channel-card .meta {
      padding: 8px;
      text-align: center;
    }

    .channel-card .meta h4 {
      margin: 4px 0;
      font-size: 16px;
      font-weight: 600;
      color: white;
    }

    .channel-card .meta p {
      margin: 0;
      font-size: 13px;
      color: #00ffff;
    }

    .chat-box {
      width: 100vw;
      height: calc(100vh - var(--contentTopOffset, 0px));
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
    }

    .chat-box iframe {
      width: 100vw;
      height: 100%;
      border: none;
      display: block;
    }

    @media (max-width: 768px) {
      .channels-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (min-width: 1024px) {
      .channels-grid {
        grid-template-columns: repeat(8, 1fr);
      }
    }