/* portfolio.css */
.portfolio-stats-bar { padding: 2.25rem 0; background: var(--bg-2); border-bottom: 1px solid var(--border); }
.psb-inner { display: flex; align-items: center; justify-content: center; gap: 3rem; flex-wrap: wrap; }
.psb-item { display: flex; flex-direction: column; align-items: center; gap: 0.2rem; }
.psb-val { font-family: var(--font-display); font-size: 2rem; font-weight: 800; line-height: 1; }
.psb-item span:last-child { font-size: 0.78rem; color: var(--text-2); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }
.psb-sep { width: 1px; height: 40px; background: var(--border); }

.portfolio-filter-wrap { background: var(--bg); padding: 2rem 0 0; }
.pf-filters { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.pf-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-family: var(--font-display);
  transition: all var(--dur-base);
}
.pf-btn:hover { color: var(--text); border-color: var(--border-2); }
.pf-btn.active { background: var(--grad-cta); color: #fff; border-color: transparent; box-shadow: 0 2px 14px rgba(37,99,235,0.35); }

.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.projects-grid.hidden-item { display: none; }

.proj-card { overflow: hidden; transition: border-color var(--dur-base), transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base); cursor: pointer; }
.proj-card.filtered-out { display: none; }
.proj-img-wrap { position: relative; overflow: hidden; }
.proj-img { width: 100%; height: 200px; object-fit: cover; transition: transform 0.6s var(--ease-out); }
.proj-card:hover .proj-img { transform: scale(1.06); }
.proj-overlay {
  position: absolute;
  inset: 0;
  background: rgba(6,8,14,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--dur-base);
}
.proj-card:hover .proj-overlay { opacity: 1; }
.proj-view-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  background: var(--grad-cta);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  border: none;
  cursor: pointer;
}

.proj-body { padding: 1.5rem; }
.proj-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.85rem; }
.proj-year { font-size: 0.75rem; color: var(--text-3); font-weight: 600; }
.proj-title { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 700; margin-bottom: 0.75rem; line-height: 1.35; }
.proj-desc { font-size: 0.875rem; color: var(--text-2); line-height: 1.7; margin-bottom: 1.1rem; }

.proj-results { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin-bottom: 1.1rem; padding: 1rem; background: var(--surface); border-radius: var(--radius-md); border: 1px solid var(--border); }
.pr-item { display: flex; flex-direction: column; align-items: center; gap: 0.15rem; }
.pr-val { font-family: var(--font-display); font-size: 1.1rem; font-weight: 800; background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.pr-item span:last-child { font-size: 0.68rem; color: var(--text-3); font-weight: 600; text-align: center; }

.proj-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }

/* ── Case Study Modal ── */
.cs-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}
.cs-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}
.cs-modal {
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0,0,0,0.3);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s var(--ease-spring);
  position: relative;
}
.cs-modal-backdrop.active .cs-modal {
  transform: translateY(0) scale(1);
}
.cs-modal-header {
  padding: 2rem 2.5rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}
.cs-modal-header h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.25;
}
.cs-modal-close {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--dur-fast);
  flex-shrink: 0;
}
.cs-modal-close:hover {
  background: var(--surface-2);
  color: var(--text);
}
.cs-modal-body {
  padding: 2rem 2.5rem;
  color: var(--text-2);
  line-height: 1.75;
  font-size: 0.95rem;
}
.cs-modal-body h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin: 1.75rem 0 0.6rem;
}
.cs-modal-body h4:first-child {
  margin-top: 0;
}
.cs-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.cs-metric-box {
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
}
.cs-metric-val {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}
.cs-metric-label {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 600;
  text-transform: uppercase;
}
.cs-modal-footer {
  padding: 1.5rem 2.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  background: var(--surface);
}

@media (max-width: 1024px) { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { 
  .projects-grid { grid-template-columns: 1fr; }
  .cs-modal-header, .cs-modal-body, .cs-modal-footer { padding: 1.25rem 1.5rem; }
}