html, body {
      margin: 0;
      padding: 0;
      font-family: 'Segoe UI', sans-serif;
      background: #121212;
      height: 100%;
      overflow: hidden;
    }

    /* NAVBAR */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 16px;
      background: rgba(218, 169, 10, 0.6);
      backdrop-filter: blur(12px);
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      color: white;
      font-size: 16px;
      font-weight: bold;
    }

    .logo img {
      height: 36px;
      border-radius: 6px;
    }

    .nav-links {
      list-style: none;
      display: flex;
      gap: 16px;
      margin: 0;
      padding: 0;
    }

    .nav-links li a {
      color: white;
      text-decoration: none;
      font-size: 14px;
      position: relative;
    }

    .nav-links li a::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      background: #00ffc3;
      left: 0;
      bottom: -4px;
      transition: width 0.3s;
    }

    .nav-links li a:hover::after {
      width: 100%;
    }

    .burger {
      display: none;
      flex-direction: column;
      gap: 4px;
      cursor: pointer;
    }

    .burger div {
      width: 24px;
      height: 2px;
      background: white;
    }

    @media (max-width: 768px) {
      .nav-links {
        position: absolute;
        top: 56px;
        right: 16px;
        background: rgba(0, 0, 0, 0.95);
        flex-direction: column;
        padding: 10px 15px;
        border-radius: 6px;
        display: none;
      }

      .nav-links.show {
        display: flex;
      }

      .burger {
        display: flex;
      }

      .logo span {
        font-size: 14px;
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }
    }

    /* IFRAME */
    .iframe-container {
      position: absolute;
      top: 56px;
      left: 0;
      right: 0;
      bottom: 0;
    }

    .iframe-container iframe {
      width: 100%;
      height: 100%;
      border: none;
    }

    /* Telegram button */
    .telegram-btn {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 999;
      width: 50px;
      height: 50px;
      background-color: #0088cc;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      animation: float 2s ease-in-out infinite;
    }

    .telegram-btn img {
      width: 24px;
      height: 24px;
      filter: invert(1);
    }

    @keyframes float {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }