.text-center {
  text-align: center;
}

.portfolio-intro {
  max-width: 600px;
  margin: 0 auto;
}

/* Portfolio Categories Section - matches blog label filter styling */
.portfolio-categories-section {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}

.portfolio-categories-title {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.7;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.category-descriptions {
  margin-top: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.category-item {
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

.category-item.show {
  opacity: 1;
  transform: translateY(0);
}

.category-item h3 {
  color: var(--primary-color);
  margin-bottom: 0.75rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.category-item p {
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.filter-btn {
  background: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-light);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: rgba(44, 62, 80, 0.1);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

.portfolio-item:nth-child(1) {
  animation-delay: 0.1s;
}

.portfolio-item:nth-child(2) {
  animation-delay: 0.2s;
}

.portfolio-item:nth-child(3) {
  animation-delay: 0.3s;
}

.portfolio-item:nth-child(4) {
  animation-delay: 0.4s;
}

.portfolio-item:nth-child(n + 5) {
  animation-delay: 0.5s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.portfolio-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.portfolio-item:hover img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 50%,
    var(--overlay-dark) 100%
  );
  color: var(--text-on-accent);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  opacity: 0;
  transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-info h3 {
  color: var(--text-on-accent);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.portfolio-info p {
  color: var(--text-on-accent);
  font-size: 0.95rem;
  margin: 0;
}

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

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-image {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.lightbox-info {
  background: var(--overlay-light);
  padding: 1rem 2rem;
  margin-top: 1rem;
  border-radius: 8px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.lightbox-info h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
}

.lightbox-info p {
  color: var(--text-light);
  margin: 0;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-nav.prev {
  left: 20px;
}

.lightbox-nav.next {
  right: 20px;
}

.lightbox-nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lightbox-nav:disabled:hover {
  transform: translateY(-50%) scale(1);
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid #fff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }

  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@media (max-width: 768px) {
  .portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
  }

  .filter-tabs {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }

  .lightbox-content {
    max-width: 95vw;
    max-height: 95vh;
  }

  .lightbox-image {
    max-height: 75vh;
  }

  .lightbox-close,
  .lightbox-nav {
    width: 45px;
    height: 45px;
    font-size: 18px;
  }

  .lightbox-close {
    top: 15px;
    right: 15px;
  }

  .lightbox-nav {
    top: 45%;
  }

  .lightbox-nav.prev {
    left: 15px;
  }

  .lightbox-nav.next {
    right: 15px;
  }

  .lightbox-info {
    padding: 0.75rem 1.5rem;
    margin-top: 0.75rem;
  }

  .lightbox-info h3 {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .lightbox-info {
    padding: 0.5rem 1rem;
    margin-top: 0.5rem;
  }
}