nav {
  position: relative;
  border-bottom: 0.5px solid var(--line);
}

.section-header {
  padding: 48px 48px 40px;
}

.section-label {
  font-size: 9px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
}

.proyectos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  padding: var(--gap);
}

.proyecto-item {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  display: block;
  text-decoration: none;
  background: #111;
}

.proyecto-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.proyecto-item:hover img {
  transform: scale(1.05);
}

.proyecto-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(0,0,0,0.7));
  opacity: 0;
  transition: opacity 0.4s ease;
  display: flex;
  align-items: flex-end;
  padding: 28px;
}

.proyecto-item:hover .proyecto-overlay {
  opacity: 1;
}

.proyecto-name {
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text);
}

@media (max-width: 768px) {
  .section-header { padding: 32px 20px 24px; }
  .proyectos-grid { grid-template-columns: repeat(2, 1fr); }
  .proyecto-overlay { opacity: 1; }
}

@media (max-width: 480px) {
  .proyectos-grid { grid-template-columns: 1fr; }
}