/* Filter */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--sp-lg);
}

.filter-btn {
  padding: 0.55rem 1.2rem;
  border-radius: 100px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--clr-blue);
  border-color: var(--clr-blue);
  color: var(--clr-white);
}

/* Portfolio grid */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-sm);
}

.portfolio-card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, opacity 0.3s;
}

.portfolio-card.hidden {
  display: none;
}

.portfolio-card:hover {
  transform: translateY(-6px);
  border-color: var(--clr-blue);
}

.portfolio-card__cover {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}

.portfolio-card__cover--cloud    { background: linear-gradient(135deg, #1e3a5f, #2563eb); }
.portfolio-card__cover--security { background: linear-gradient(135deg, #3b1f5e, #7c3aed); }
.portfolio-card__cover--network  { background: linear-gradient(135deg, #1a3a2e, #059669); }
.portfolio-card__cover--managed  { background: linear-gradient(135deg, #3a2000, #f59e0b); }

.portfolio-card__body { padding: var(--sp-sm) var(--sp-md); }

.portfolio-card__category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-blue);
  margin-bottom: 0.3rem;
}

.portfolio-card h3 { margin-bottom: 0.4rem; }

.portfolio-card p {
  color: var(--clr-muted);
  font-size: 0.88rem;
  margin-bottom: var(--sp-sm);
}

.portfolio-card__metric {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-blue);
  margin-bottom: var(--sp-sm);
}

.portfolio-card__footer {
  padding: var(--sp-sm) var(--sp-md);
  border-top: 1px solid var(--clr-border);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5,8,20,0.92);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  max-width: 720px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform 0.3s;
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal__header {
  padding: var(--sp-md);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal__close {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--clr-border);
  color: var(--clr-text);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal__close:hover { background: var(--clr-blue); }

.modal__body { padding: var(--sp-md); }

.modal__section { margin-bottom: var(--sp-md); }

.modal__section h4 {
  color: var(--clr-blue);
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.modal__section p { color: var(--clr-muted); }

.modal__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.modal__outcome-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-sm);
  text-align: center;
}

.modal__outcome-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal__outcome-label { font-size: 0.8rem; color: var(--clr-muted); }

@media (max-width: 768px) {
  .portfolio__grid { grid-template-columns: 1fr 1fr; }
  .modal__outcome-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .portfolio__grid { grid-template-columns: 1fr; }
}