* {
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', sans-serif;
      background: var(--wu-bg);
      color: var(--wu-text);
      margin: 0;
      padding: 0;
    }

    header.app-header {
      background: var(--wu-surface-1);
      padding: 15px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: 0 1px 5px rgba(0,0,0,0.06);
    }

    .logo {
      font-weight: 600;
      font-size: 18px;
    }

    header.app-header nav a {
      text-decoration: none;
      color: var(--wu-text);
      margin-left: 20px;
      font-weight: 500;
    }

    header.app-header nav a:hover {
      color: var(--wu-accent);
    }

    .container {
      max-width: 95vw;
      margin: 30px auto;
      padding: 10px;
      text-align: center;
      background: var(--wu-bg);
      border-radius: 12px;
      box-shadow: 0 70px 70px 70px rgba(0.35, 0.35, 0.35, 0.35);
    }

    form#unblockForm {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 20px 0;
      align-items: center;
    }

    form#unblockForm input[type="text"] {
      flex-grow: 1;
      min-width: 250px;
      padding: 12px;
      font-size: 16px;
      border: 1px solid var(--wu-border);
      border-radius: 8px;
    }

    form#unblockForm label {
      display: flex;
      align-items: center;
      gap: 5px;
      font-size: 14px;
    }

    form#unblockForm button {
      padding: 10px 16px;
      background: var(--wu-accent);
      color: var(--wu-accent-contrast);
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: background 0.3s ease;
    }

    form#unblockForm button:hover {
      background: #0047d6;
    }

    #loader {
      display: none;
      position: fixed;
      top: 10px;
      right: 10px;
      background: var(--wu-surface-inset);
      color: var(--wu-text);
      padding: 10px 15px;
      border-radius: 8px;
      z-index: 9999;
      font-family: sans-serif;
    }

    iframe {
      width: 100%;
      height: 600px;
      border: 1px solid var(--wu-border);
      border-radius: 8px;
      margin-top: 15px;
    }

    .ocr-form {
      margin-top: 20px;
    }

    .ocr-form button {
      padding: 10px 14px;
      background: var(--wu-text-subtle);
      color: var(--wu-accent-contrast);
      border: none;
      border-radius: 6px;
      cursor: pointer;
    }

    .ocr-form button:hover {
      background: var(--wu-text-muted);
    }

    footer {
      background: var(--wu-surface-inset);
      padding: 20px;
      text-align: center;
      font-size: 14px;
      color: var(--wu-text-subtle);
      margin-top: 40px;
    }