.guru-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #c00000;
    color: #f0f0f0;
    font-family: "Courier New", Courier, monospace;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    flex-direction: column;
    text-align: center;
    user-select: none;
  }

  .guru-box {
    border: 2px solid #f0f0f0;
    padding: 24px 48px;
    max-width: 80%;
  }

  .guru-title {
    font-weight: bold;
    font-size: 20px;
    margin-bottom: 16px;
  }

  .guru-blinker {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: #f0f0f0;
    margin-left: 4px;
    animation: blink 1s step-start infinite;
    vertical-align: bottom;
  }

  @keyframes blink {
    50% { opacity: 0; }
  }

  .guru-overlay button {
    margin-top: 32px;
    padding: 6px 12px;
    font-family: inherit;
    background: none;
    border: 1px solid #f0f0f0;
    color: #f0f0f0;
    cursor: pointer;
  }

  .guru-overlay button:hover {
    background: rgba(255,255,255,0.1);
  }