:root {
  --color-nav-bg: #acfecf;    /* verde claro para fondo del nav */
  --color-primary: #2E7D32;   /* verde oscuro */
  --color-hover: #1B5E20;     /* verde aún más oscuro */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F5F5;
  --color-text: #212121;
  --color-muted: #757575;
}

body {
  margin: 0;
  font-family: 'Roboto', 'Segoe UI', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
}

/* ---------------- FEED ---------------- */
#feed {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  padding: 16px;
}

.card {
  background: var(--color-bg-alt);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

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

.card-content {
  padding: 12px;
}

.card-content h3 {
  margin: 0;
  color: var(--color-primary);
}

.card-content p {
  margin: 8px 0;
  color: var(--color-muted);
}

.precio {
  color: var(--color-primary);
  font-weight: bold;
}

/* ---------------- FOOTER ---------------- */
.footer {
  background: var(--color-nav-bg);
  color: var(--color-primary);
  text-align: center;
  padding: 16px;
  margin-top: 40px;
}

.footer-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--color-hover);
}