<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CDREGM &mdash; Project Hub</title>
<style>
  @import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,600;1,400&family=Inter:wght@400;500;600;700&display=swap');

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  :root {
    --bg:      #0f172a;
    --surface: #1e293b;
    --border:  #334155;
    --text:    #e2e8f0;
    --muted:   #94a3b8;
    --accent:  #f59e0b;
    --blue:    #3b82f6;
    --purple:  #8b5cf6;
    --serif:   'EB Garamond', Georgia, serif;
    --sans:    'Inter', system-ui, sans-serif;
  }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
  }

  .hub {
    max-width: 700px;
    width: 100%;
  }

  /* header */
  .wordmark {
    font-family: var(--sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.25rem;
  }

  h1 {
    font-family: var(--serif);
    font-size: clamp(1.8rem, 5vw, 2.6rem);
    font-weight: 400;
    line-height: 1.25;
    margin-bottom: 0.6rem;
  }

  .tagline {
    font-family: var(--serif);
    font-style: italic;
    color: var(--muted);
    font-size: 1.05rem;
    margin-bottom: 2.5rem;
  }

  /* cards */
  .cards {
    display: grid;
    gap: 1rem;
    margin-bottom: 2.5rem;
  }

  .card {
    display: flex;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s, transform 0.15s;
    overflow: hidden;
  }

  .card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
  }

  .card-stripe {
    width: 5px;
    flex-shrink: 0;
  }
  .card:nth-child(1) .card-stripe { background: var(--accent); }
  .card:nth-child(2) .card-stripe { background: var(--blue); }
  .card:nth-child(3) .card-stripe { background: var(--purple); }

  .card-body {
    padding: 1.4rem 1.5rem;
    flex: 1;
  }

  .card-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.4rem;
  }

  .card h2 {
    font-family: var(--serif);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 0.4rem;
  }

  .card p {
    font-size: 0.87rem;
    color: var(--muted);
    line-height: 1.6;
  }

  .card-arrow {
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    color: var(--muted);
    font-size: 1.2rem;
    transition: color 0.15s;
  }
  .card:hover .card-arrow { color: var(--accent); }

  /* meta */
  .meta {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.78rem;
    color: var(--muted);
  }
</style>
</head>
<body>
<div class="hub">

  <div class="wordmark">CDREGM &middot; Ridley</div>
  <h1>Capitalism, Democracy,<br>Rule of Law</h1>
  <p class="tagline">Economic Growth Model &mdash; Project Documents</p>

  <div class="cards">

    <a class="card" href="webapp_outline.html">
      <div class="card-stripe"></div>
      <div class="card-body">
        <div class="card-label">Academic &amp; Pedagogical</div>
        <h2>Web App Content Outline</h2>
        <p>12-section outline of the CDR theory web application &mdash; learning objectives, source citations, interactive features, country data, and pedagogical modules drawn from the 4 research papers.</p>
      </div>
      <div class="card-arrow">&rarr;</div>
    </a>

    <a class="card" href="implementation.html">
      <div class="card-stripe"></div>
      <div class="card-body">
        <div class="card-label">R Package &middot; Technical Reference</div>
        <h2>CDREGM Implementation Plan</h2>
        <p>9-category function catalogue (59 functions), CDR framework overview, dataset schema, and tiered implementation priority for the CRAN package.</p>
      </div>
      <div class="card-arrow">&rarr;</div>
    </a>

    <a class="card" href="ai_assistant.html">
      <div class="card-stripe"></div>
      <div class="card-body">
        <div class="card-label">AI &middot; Interactive</div>
        <h2>AI CDR Assistant</h2>
        <p>Ask questions about the CDR model, compute index values, run counterfactuals, and explore policy implications through a conversational interface trained on the CDR research corpus.</p>
      </div>
      <div class="card-arrow">&rarr;</div>
    </a>

  </div>

  <div class="meta">
    <span>&copy; <script>document.write(new Date().getFullYear())</script> Dennis Ridley, Felipe Llaugel, Aryanne de Silva, Pierre Ngnepieba &amp; Abdullah Khan. CDR theory and research.</span>
    <span>&copy; <script>document.write(new Date().getFullYear())</script> NeuroDNA. Web application design and educational content.</span>
  </div>

</div>
</body>
</html>