/* ========================================
   PORTFOLIO PAGE STYLES
   ======================================== */

/* ── FILTER BAR ─────────────────────────── */
.portfolio-filter-section {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px 0;
  position: sticky;
  top: 72px;
  z-index: 100;
}

.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
}

.filter-btn.active,
.filter-btn:hover {
  color: var(--accent-cyan);
  border-color: var(--border-accent);
  background: rgba(0,245,212,0.05);
}

/* ── PORTFOLIO GRID ─────────────────────── */
.portfolio-section { background: var(--bg-primary); }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.portfolio-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.portfolio-item:hover {
  border-color: var(--border-accent);
  transform: translateY(-5px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}

/* ── PI HEADER ──────────────────────────── */
.pi-header {
  position: relative;
  padding: 36px 28px;
  height: 140px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  overflow: hidden;
}

.pi-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,245,212,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,245,212,0.05) 1px, transparent 1px);
  background-size: 30px 30px;
}

.pi-category {
  position: relative;
  z-index: 1;
  align-self: flex-start;
}

.pi-logo {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-cyan);
  opacity: 0.8;
  letter-spacing: -0.04em;
  position: relative;
  z-index: 1;
  line-height: 1;
}

/* ── PI BODY ────────────────────────────── */
.pi-body {
  padding: 24px 28px 28px;
}

.pi-body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.pi-desc {
  font-size: 0.85rem;
  line-height: 1.65;
  max-width: none;
  margin-bottom: 20px;
}

.pi-results {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  padding: 16px;
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.pi-result {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.pi-result span {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.pi-result small {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.pi-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.pi-tag {
  padding: 4px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ── RESULTS BANNER ─────────────────────── */
.results-banner {
  background: var(--bg-secondary);
  overflow: hidden;
}

.rb-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.rb-stats {
  display: flex;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 48px;
}

.rb-stat {
  flex: 1;
  padding: 32px 24px;
  border-right: 1px solid var(--border-subtle);
  text-align: center;
  transition: var(--transition);
}

.rb-stat:last-child { border-right: none; }
.rb-stat:hover { background: var(--bg-hover); }

.rb-num {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: -0.04em;
  margin-bottom: 6px;
  line-height: 1;
}

.rb-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ── RESPONSIVE ─────────────────────────── */
@media (max-width: 1024px) {
  .portfolio-grid { grid-template-columns: repeat(2,1fr); }
  .rb-stats { flex-wrap: wrap; }
  .rb-stat { min-width: 50%; border-right: none; border-bottom: 1px solid var(--border-subtle); }
  .rb-stat:nth-child(odd) { border-right: 1px solid var(--border-subtle); }
  .rb-stat:last-child { border-bottom: none; }
}

@media (max-width: 640px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .rb-stats { flex-direction: column; }
  .rb-stat { border-right: none !important; border-bottom: 1px solid var(--border-subtle); }
  .pi-results { flex-direction: column; gap: 10px; }
}