body {
      font-family: 'Segoe UI', sans-serif;
      margin: 0;
      background-color: #f2f2f2;
      color: #333;
    }

    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 2rem;
      background-color: #1C396B;
      color: #fff;
      position: relative;
    }

    .container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 1.5rem;
      padding: 2rem;
    }

    .card {
      background-color: white;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      overflow: hidden;
      transition: transform 0.2s;
    }

    .card:hover {
      transform: scale(1.02);
    }

    .card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }

    .card-content {
      padding: 1rem;
    }

    .card-content h3 {
      margin: 0.5rem 0;
      color: #1C396B;
    }

    .btn {
      margin-top: 1rem;
      background-color: #1C396B;
      color: white;
      padding: 0.5rem 1rem;
      border: none;
      border-radius: 5px;
      cursor: pointer;
    }

    .btn:hover {
      background-color: #1C396B;
    }

    /* Modal */
    .modal {
      display: none;
      position: fixed;
      top: 0; left: 0; width: 100%; height: 100%;
      background: rgba(0,0,0,0.6);
      justify-content: center;
      align-items: center;
      z-index: 1000;
    }

    .modal-content {
      background: white;
      padding: 2rem;
      border-radius: 10px;
      width: 90%;
      max-width: 600px;
      position: relative;
    }

    .close {
      position: absolute;
      top: 1rem;
      right: 1rem;
      cursor: pointer;
      font-size: 1.5rem;
      color: #999;
    }

    @media (max-width: 600px) {
      .card img {
        height: 150px;
      }
    }
    .logo, .volver {
      width: 25%;
    }

    .logo a, .volver a {
      color: #fff;
      text-decoration: none;
      font-weight: bold;
    }
    .logo a:hover, .volver a:hover {
      text-decoration: underline;
    }