:root {
      --surface-color: #1b262c;
      --bg-color: #031119;
      --text-color: #ffffff;
      --accent-color: #e3a127;
      --circle-bg: #0e1117;
      --nav-color: rgba(255, 255, 255, .8);
      --nav-hover-color: #e3a127;
      --nav-dropdown-background-color: #29343a;
      --nav-dropdown-hover-color: #e3a127;
    }

   
    .chat_btn {
      position: fixed;
      bottom: 20px;
      right: 20px;
      width: 100px;
      height: 100px;
      background: transparent;
      border: none;
      cursor: pointer;
      z-index: 1000;
      animation: bounce 2s infinite;
    }

    .chat_btn img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    @keyframes bounce {
      0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
      40% { transform: translateY(-15px); }
      60% { transform: translateY(-8px); }
    }

    .chat_box {
      position: fixed;
      bottom: 130px;
      right: 20px;
      width: 300px;
      max-height: 400px;
      background: var(--surface-color);
      border: 1px solid var(--nav-dropdown-background-color);
      border-radius: 10px;
      display: none;
      flex-direction: column;
      box-shadow: 0 4px 12px rgba(0,0,0,0.2);
      z-index: 999;
    }

    .chat_header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px;
      background-color: var(--accent-color);
      color: var(--text-color);
      border-radius: 10px 10px 0 0;
    }

    .close_btn {
      background: none;
      border: none;
      font-size: 22px;
      font-weight: bold;
      color: var(--text-color);
      cursor: pointer;
    }

    .chat_body {
      padding: 10px;
      overflow-y: auto;
      flex-grow: 1;
      max-height: 250px;
      color: var(--text-color);
    }

    .chat_input {
      display: flex;
      border-top: 1px solid var(--nav-dropdown-background-color);
    }

    .chat_input input {
      flex: 1;
      padding: 10px;
      border: none;
      background: var(--bg-color);
      color: var(--text-color);
      border-radius: 0 0 0 10px;
      outline: none;
    }

    .chat_input button {
      padding: 10px;
      background-color: var(--accent-color);
      color: var(--text-color);
      border: none;
      border-radius: 0 0 10px 0;
      cursor: pointer;
    }

    .chat_msg {
      background: var(--nav-dropdown-background-color);
      color: var(--text-color);
      padding: 8px;
      margin-bottom: 6px;
      border-radius: 8px;
    }