.subtitle {
  color: #7f8c8d;
  font-size: 1.1rem;
}

.category-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.category-btn {
  padding: 10px 20px;
  border: none;
  background:  #6a89cc;
  color: white;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow:
    0 4px 6px rgba(50, 50, 93, 0.11),
    0 1px 3px rgba(0, 0, 0, 0.08);
}

.category-btn:hover {
  transform: translateY(-2px);
  box-shadow:
    0 7px 14px rgba(50, 50, 93, 0.1),
    0 3px 6px rgba(0, 0, 0, 0.08);
}

.category-btn.active {
  background: linear-gradient(135deg, #4a69bd 0%, #0e5f99 100%);
  transform: translateY(-2px);
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  padding: 20px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  cursor: pointer;
  aspect-ratio: 1;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.gallery-item:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

/* Lightbox Modal */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  color: white;
  font-size: 40px;
  cursor: pointer;
  background: none;
  border: none;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.lightbox-close:hover {
  transform: rotate(90deg);
}

.lightbox-nav {
  position: absolute;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-nav button {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.lightbox-nav button:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

/* Image Counter */
.image-counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: white;
  background: rgba(0, 0, 0, 0.5);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  backdrop-filter: blur(10px);
}

/* Loading Animation */
.loading {
  display: none;
  text-align: center;
  padding: 40px;
  color: #7f8c8d;
}

.loading.active {
  display: block;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 15px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    padding: 15px;
  }

  .category-btn {
    padding: 8px 15px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
  }

  .gallery-item {
    aspect-ratio: 1;
  }

  .category-btn {
    padding: 6px 12px;
    font-size: 12px;
  }
  .lightbox-nav button {
    width: 50px;
    height: 50px;
    font-size: 20px;
  }
}