/* ── PORTFOLIO OVERVIEW ── */

.portfolio-header {
  padding: 7rem 4rem 3rem;
}
.portfolio-header .section-eyebrow {
  margin-bottom: 1.5rem;
}
.portfolio-header .section-title {
  margin-bottom: 1rem;
}
.portfolio-intro {
  font-size: 1.05rem;
  color: var(--text2);
  max-width: 600px;
  line-height: 1.7;
}

/* ── FILTER ── */
.portfolio-filter {
  display: flex;
  gap: 0.5rem;
  padding: 0 4rem 3rem;
  flex-wrap: wrap;
}
.filter-btn {
  background: none;
  border: 1px solid var(--border);
  padding: 0.5rem 1.2rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text2);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.filter-btn.active {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

/* ── PROJECT GRID ── */
.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 0 4rem 5rem;
}
.portfolio-card {
  text-decoration: none;
  color: var(--text);
  overflow: hidden;
  display: block;
}
.portfolio-card.featured {
  grid-column: span 2;
}
.portfolio-card-img {
  aspect-ratio: 3/2;
  overflow: hidden;
  position: relative;
}
.portfolio-card.featured .portfolio-card-img {
  aspect-ratio: 21/9;
}
.portfolio-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16,1,0.3,1), filter 0.4s;
  filter: brightness(0.93) saturate(0.85);
}
.portfolio-card:hover .portfolio-card-img img {
  transform: scale(1.04);
  filter: brightness(0.65) saturate(1.0);
}
.portfolio-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30,26,23,0.7) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.35s;
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}
.portfolio-card:hover .portfolio-card-overlay {
  opacity: 1;
}
.portfolio-card-hover-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
}
.portfolio-card-hover-cat {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  margin-top: 0.3rem;
}
.portfolio-card-info {
  padding: 1.2rem 0.2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.portfolio-card-name {
  font-size: 0.9rem;
  font-weight: 600;
}
.portfolio-card-cat {
  font-size: 0.62rem;
  color: var(--mid);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 0.15rem;
}
.portfolio-card-arrow {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mid);
  font-size: 0.75rem;
  flex-shrink: 0;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.portfolio-card:hover .portfolio-card-arrow {
  background: var(--accent-spot);
  color: #fff;
  border-color: var(--accent-spot);
}

/* ── FILTER ANIMATION ── */
.portfolio-card[data-hidden="true"] {
  display: none;
}

/* ── MOBILE ── */
@media (max-width: 900px) {
  .portfolio-header { padding: 5.5rem 1.5rem 2rem; }
  .portfolio-filter { padding: 0 1.5rem 2rem; }
  .portfolio-grid {
    grid-template-columns: 1fr;
    padding: 0 1.5rem 3rem;
  }
  .portfolio-card.featured {
    grid-column: span 1;
  }
}