body { 
      background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
      min-height: 100vh;
    }
    
    .producto-item {
      transition: all 0.3s ease;
      border-left: 4px solid transparent;
      border-radius: 8px;
      margin-bottom: 8px;
    }
    
    .producto-item:hover { 
      background: linear-gradient(135deg, #fff8e1 0%, #ffe0b2 100%) !important;
      cursor: pointer;
      border-left-color: #ff8c00;
      transform: translateX(8px);
      box-shadow: 0 4px 12px rgba(255, 140, 0, 0.2);
    }
    
    .producto-item.active {
      background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%) !important;
      border-left-color: #ff6f00;
      box-shadow: 0 6px 16px rgba(255, 111, 0, 0.3);
    }
    
    .badge-categoria { text-transform: capitalize; }
    .placeholder-panel { color:#6c757d; }
    .scroll-lista { 
      max-height: 700px; 
      overflow-y: auto;
      padding: 12px;
    }
    
    /* Que el visor PDF ocupe bien el modal */
    #pdfViewer { width: 100%; height: 70vh; border: none; }
    
    /* Estilos mejorados para interfaz más atractiva */
    .filter-chip {
      display: inline-block;
      padding: 10px 20px;
      margin: 6px;
      border-radius: 25px;
      border: 2px solid #dee2e6;
      background: white;
      cursor: pointer;
      transition: all 0.3s ease;
      font-size: 0.9rem;
      font-weight: 600;
      box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    }
    
    .filter-chip:hover {
      border-color: #ff8c00;
      background: linear-gradient(135deg, #fff8e1 0%, #ffe0b2 100%);
      transform: translateY(-3px);
      box-shadow: 0 6px 12px rgba(255, 140, 0, 0.2);
    }
    
    .filter-chip.active {
      background: linear-gradient(135deg, #ff8c00 0%, #ff6f00 100%);
      border-color: #ff6f00;
      color: white;
      box-shadow: 0 6px 16px rgba(255, 111, 0, 0.4);
      transform: translateY(-2px);
    }
    
    .product-photo-container {
      position: relative;
      width: 100%;
      height: 250px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 16px;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 24px;
      box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
    }
    
    .product-photo-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-fit: contain; /* no recorta ni distorsiona */
      border-radius: 10px;
      image-rendering: auto; /* evita pixelado */
    }
    
    .product-photo-placeholder {
      text-align: center;
      color: white;
      padding: 20px;
    }
      
    .card {
      border-radius: 16px;
      border: none;
      box-shadow: 0 4px 20px rgba(0,0,0,0.08);
      overflow: hidden;
    }
    
    .card-header {
      border-radius: 16px 16px 0 0 !important;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
      color: white !important;
      font-weight: 600;
      padding: 16px 20px;
    }
    
    .btn-primary {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border: none;
      border-radius: 12px;
      padding: 12px 24px;
      font-weight: 600;
      transition: all 0.3s ease;
      box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    }
    
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 24px rgba(102, 126, 234, 0.5);
    }
    
    .filter-section {
      background: white;
      padding: 24px;
      border-radius: 16px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.08);
      margin-bottom: 24px;
    }
    
    .filter-section h5 {
      color: #667eea;
      font-weight: 700;
    }
    
    .btn-outline-secondary {
      border-radius: 20px;
      padding: 6px 16px;
      font-weight: 600;
      transition: all 0.3s ease;
    }
    
    .btn-outline-secondary:hover {
      background: #f8f9fa;
      transform: translateY(-2px);
    }
    
    /* Estilos para el precio con formato mejorado */
    .precio-producto {
      display: flex;
      flex-direction: column;
      align-items: flex-end;
    }
    
    .precio-valor {
      color: #28a745;
      font-size: 1.1rem;
      font-weight: 700;
      line-height: 1.2;
    }
    
    .precio-label {
      color: #6c757d;
      font-size: 0.7rem;
      font-weight: 500;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    
    .precio-detalle {
      background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
      padding: 16px;
      border-radius: 12px;
      border-left: 4px solid #28a745;
      margin-bottom: 20px;
    }
    
    .precio-detalle-valor {
      color: #28a745;
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 4px;
    }
    
    .precio-detalle-label {
      color: #155724;
      font-size: 0.75rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

      /* seleccion de productos */
  .list-group-item.active {
    background-color: rgba(255, 166, 0, 0.64) !important;
    border-color: orange !important;
    color: white !important;
  }

  /* ⚫ Texto de "Presentación" en negro */
  .list-group-item small {
    color: black !important;
   }

/* Footer */
.footer {
  background-color: #0e1822;
  color: rgb(255, 98, 0);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.footer-logo i {
  font-size: 1.8rem;
}

.footer-column h4 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-column a:hover {
  color: rgb(255, 255, 255);
}

.footer-column p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 2rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}