:root {
      --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      --bg: #ffffff;
      --text: #1f2328;
      --muted: #636c76;
      --accent: #0969da;
      --border: #d0d7de;
    }
    @media (prefers-color-scheme: dark) {
      :root {
        --bg: #0d1117;
        --text: #e6edf3;
        --muted: #8b949e;
        --accent: #2f81f7;
        --border: #30363d;
      }
    }
    :root[data-theme="light"] { color-scheme: light; }
    :root[data-theme="dark"] { color-scheme: dark; }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background: var(--bg);
      color: var(--text);
      padding: 20px;
    }

    h1 {
      margin-bottom: 20px;
      font-size: 20px;
    }

    .repo-list {
      border-top: 1px solid var(--border);
    }

    .repo {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border);
      padding: 12px 0;
    }

    .repo-info {
      flex: 1;
    }
    .repo-info a {
      font-weight: 600;
      color: var(--accent);
      text-decoration: none;
    }
    .repo-info p {
      margin: 4px 0 0;
      font-size: 14px;
      color: var(--muted);
    }

    .repo-actions {
      display: flex;
      gap: 8px;
    }

    .btn {
      border: 1px solid var(--border);
      background: var(--bg);
      color: var(--text);
      padding: 4px 10px;
      border-radius: 6px;
      cursor: pointer;
      font-size: 14px;
    }
    .btn:hover { background: var(--border); }

    footer {
      margin-top: 30px;
      border-top: 1px solid var(--border);
      padding-top: 10px;
      font-size: 12px;
      color: var(--muted);
      text-align: center;
    }