body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  background-color: #f8f9fa;
  color: #333;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.main-header {
  background: #1e293b;
  color: white;
  padding: 20px 0;
}

.main-header h1 {
  margin: 0 0 10px 0;
}

.main-nav a {
  color: #cbd5e1;
  text-decoration: none;
  margin-right: 15px;
  font-weight: bold;
}

.main-nav a.active, .main-nav a:hover {
  color: white;
}

.page-content {
  padding: 40px 0;
}

/* Griglia con schede quadrate */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 25px;
  margin-top: 20px;
}

.product-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  aspect-ratio: 1 / 1; /* Rende la scheda perfettamente quadrata */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  box-sizing: border-box;
}

.product-card h3 {
  margin: 0 0 10px 0;
  font-size: 1.1rem;
}

.product-card p {
  font-size: 0.9rem;
  color: #64748b;
  flex-grow: 1;
  overflow-y: auto; /* Aggiunge scrollbar interna se la descrizione è molto lunga */
  margin: 0 0 15px 0;
}

.btn-download {
  display: block;
  text-align: center;
  background: #2563eb;
  color: white;
  padding: 10px;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  font-size: 0.85rem;
  transition: background 0.2s;
}

.btn-download:hover {
  background: #1d4ed8;
}