body {
      margin: 0;
      font-family: Arial, Helvetica, sans-serif;
      background: #f4f6f8;
      color: #333;
    }

    header {
      background: #2c7be5;
      color: #fff;
      padding: 20px;
      text-align: center;
    }

    nav {
      background: #1a5fc4;
      padding: 10px;
      text-align: center;
    }

    nav a {
      color: #fff;
      margin: 0 15px;
      text-decoration: none;
      font-weight: bold;
    }

    nav a:hover {
      text-decoration: underline;
    }

    .hero {
      background: #ffffff;
      padding: 40px 20px;
      text-align: center;
    }

    .hero h1 {
      margin-bottom: 10px;
    }

    .container {
      max-width: 1100px;
      margin: auto;
      padding: 20px;
    }

    .products {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
    }

    .card {
      background: #fff;
      border-radius: 8px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
      padding: 15px;
      text-align: center;
    }

    .card img {
      max-width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 6px;
    }

    .card h3 {
      margin: 10px 0;
    }

    .price {
      color: #2c7be5;
      font-size: 18px;
      font-weight: bold;
    }

    footer {
      background: #1a5fc4;
      color: #fff;
      text-align: center;
      padding: 15px;
      margin-top: 40px;
    }

    .btn {
      background: #2c7be5;
      color: #fff;
      padding: 10px 15px;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      text-decoration: none;
      display: inline-block;
      margin-top: 10px;
    }

    .btn:hover {
      background: #1a5fc4;
    }
/* ================================
   Botón flotante de WhatsApp
================================ */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.whatsapp-float img {
  width: 35px;
  height: 35px;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  transition: 0.2s;
}