/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f9f9f9;
}

/* Estilo del menú de navegación */
.navbar {
  background-color: #333;
  color: white;
  padding: 10px 20px;
}

.navbar ul {
  list-style: none;
  display: flex;
  justify-content: flex-start;
}

.navbar ul li {
  margin-right: 20px;
}

.navbar ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.navbar ul li a:hover {
  text-decoration: underline;
}

/* Estilo del contenido principal */
main {
  padding: 20px;
  max-width: 800px;
  margin: 20px auto;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Estilo del pie de página */
footer {
  text-align: center;
  padding: 10px;
  background-color: #333;
  color: white;
  margin-top: 20px;
}

/* Research cards layout */
.research-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 12px;
}

.research-card {
  background: #fafafa;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  width: 100%;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
  will-change: transform, box-shadow;
}

.research-card:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 8px 18px rgba(0,0,0,0.15);
  border-color: #d1d5db;
}

@media (prefers-reduced-motion: reduce) {
  .research-card {
    transition: none;
  }
  .research-card:hover {
    transform: none;
  }
}

.research-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.research-card p {
  font-size: 0.95rem;
  color: #4b5563;
  text-align: justify;
}