/* ─── Portfolio ──────────────────────────────────────────── */
.portfolio { background: var(--bg-alt); }

/* ── Filter ── */
.portfolio__filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: .5rem 1.25rem;
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  background: var(--bg);
  cursor: pointer;
  transition: background var(--transition),
              color var(--transition),
              border-color var(--transition);
}
.filter-btn:hover,
.filter-btn--active {
  background: var(--blue-800);
  color: #fff;
  border-color: var(--blue-800);
}

/* ── Grid ── */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.portfolio__item {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}
.portfolio__item:hover { transform: scale(1.02); box-shadow: var(--shadow-lg); }

.portfolio__img {
  width: 100%; height: 100%;
  position: relative;
  overflow: hidden;
  background: var(--blue-800);
}

.portfolio__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Overlay ── */
.portfolio__overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1.25rem 1rem .875rem;
  background: linear-gradient(to top, rgba(0,0,0,.75) 0%, transparent 100%);
  display: flex;
  flex-direction: column;
  gap: .25rem;
  transform: translateY(8px);
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
}
.portfolio__item:hover .portfolio__overlay { opacity: 1; transform: translateY(0); }
.portfolio__item:focus-within .portfolio__overlay { opacity: 1; transform: translateY(0); }

.portfolio__cat   { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--orange); }
.portfolio__brand { font-size: .9rem; font-weight: 700; color: #fff; }

/* ── CTA ── */
.portfolio__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
  text-align: center;
}
.portfolio__cta p { font-size: .95rem; }

@media (max-width: 900px) {
  .portfolio__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .portfolio__grid { grid-template-columns: 1fr; }
}