/* ========== Portfolio Page ========== */
.portfolio-main {
  position: relative;
  z-index: 1;
  padding: 2rem 0 3rem;
}

.portfolio-header {
  text-align: center;
  margin-bottom: 2rem;
  padding: 0 1.25rem;
}

.back-link {
  display: inline-block;
  color: var(--accent-soft);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.back-link:hover {
  text-decoration: underline;
}

.portfolio-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* 1 imagen por línea, full width, sin bordes */
.portfolio-grid {
  display: flex;
  flex-direction: column;
}

.portfolio-item {
  width: 100%;
  line-height: 0;
}

.portfolio-item img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: top;
}

.portfolio-footer {
  text-align: center;
  margin-top: 2.5rem;
  padding: 0 1.25rem;
}