:root {
      --bg-color: #f4f4f9;
      --card-bg: #ffffff;
      --text-main: #333333;
      --italian-color: #00875a;
      --border-color: #e0e0e0;
    }

    body {
      font-family: system-ui, -apple-system, sans-serif;
      background: var(--bg-color);
      color: var(--text-main);
      padding: 40px 20px;
      max-width: 1000px;
      margin: 0 auto;
    }

    h1 {
      text-align: center;
      margin-bottom: 40px;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 20px;
    }

    .card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      padding: 40px 20px;
      text-align: center;
      cursor: pointer;
      border-radius: 12px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
      transition: transform 0.2s, box-shadow 0.2s;
      user-select: none;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 12px rgba(0, 0, 0, 0.1);
    }

    .english {
      font-size: 1.1rem;
      font-weight: 500;
    }

    .italian {
      display: none;
      color: var(--italian-color);
      font-weight: bold;
      font-size: 1.3rem;
      margin-top: 15px;
    }

    .card.revealed .italian {
      display: block;
    }