/* =============================================================
   PORTALBA — Projects page styles (projects.html)
   ============================================================= */

/* ── Project card — lift on hover (extends main.css) ─────── */
.project-card {
  transition: transform 0.3s ease;
}
.project-card:hover {
  transform: translateY(-6px);
}

/* ── Filter buttons ───────────────────────────────────────── */
.filter-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--border-strong);
  color: var(--text-4);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.filter-btn.active {
  background: var(--accent);
  color: #09090b;
  border-color: var(--accent);
}

/* ── Grid item visibility (filter toggle) ────────────────── */
.project-item {
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.project-item.hidden-item {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
  height: 0;
  overflow: hidden;
  margin: 0;
  padding: 0;
}