/* CONTAINER */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* HEADER */
.site-header {
  padding: 2rem 1rem;
}

/* TITULO */
.container header {
  text-align: center;
  margin-bottom: 3rem;
}

.container h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.container p {
  color: #666;
}

/* GRID PROYECTOS */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* PROJECT */
.project {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* IMAGENES (thumbnails) */
.project img {
  width: 100%;
  display: block;
}

/* TEXTO */
.project h3 {
  font-size: 0.8rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 400;
}

.project p {
  font-size: 0.9rem;
  color: #666;
}

/* NAV CATEGORIAS */
.project-nav ul {
  display: flex;
  justify-content: center;
  gap: 2rem;
  list-style: none;
}

.project-nav a {
  text-decoration: none;
  color: #666;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.project-nav a:hover {
  color: #000;
}

/* CATEGORIAS */
.category {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid #ddd;
}

.category h2 {
  text-align: center;
  margin-bottom: 2rem;
}

/* BOTON VOLVER ARRIBA */
.back-top {
  text-decoration: none;
  color: #000;
  font-size: 1.3rem;
  font-weight: 600;
  margin-left: 0.5rem;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.back-top:hover {
  opacity: 1;
}

/* PAGE HEADER */
.page-header {
  margin-top: 1rem;
  text-align: center;
}

.page-header h1 {
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #666;
}

/* FOOTER */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.8rem;
  color: #666;
}

/* MOBILE */
@media (max-width: 768px) {

  .grid {
    grid-template-columns: 1fr;
  }

  .landing-nav ul {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }

  .landing-nav a {
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
  }

}