main img {
  max-width: 100%;
  height: auto;
  cursor: pointer;
}

.fullscreen-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.9);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  cursor: pointer;
}

.fullscreen-overlay.show {
  display: flex;
}

.fullscreen-image {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

.close-btn {
  position: absolute;
  top: 20px;
  right: 30px;
  color: white;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  user-select: none;
}

.close-btn:hover {
  color: #ccc;
}

/* Navigation arrows */
.nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-size: 60px;
  font-weight: bold;
  cursor: pointer;
  user-select: none;
  opacity: 0.7;
  transition: opacity 0.2s ease;
  z-index: 1001;
}

.nav-arrow:hover {
  opacity: 1;
}

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

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

/* Scroll to top button */
.scroll-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--tertiary-color);
  color: var(--primary-color);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
}

.scroll-to-top.show {
  opacity: 0.8;
  visibility: visible;
}

.scroll-to-top:hover {
  opacity: 1;
  transform: translateY(-2px);
}