* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

/* Header */
.topbar {
  width: 100%;
  background: #007bff;
  padding: 18px 30px;
  position: fixed;
  top: 0;
  z-index: 1000;
}

.site-name {
  color: white;
  font-size: 26px;
  font-weight: bold;
}

/* Carousel */
.carousel-section {
  margin-top: 80px;
}

.carousel {
  width: 100%;
  height: 320px;
  position: relative;
  overflow: hidden;
}

.carousel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.carousel img.active {
  opacity: 1;
  position: relative;
}

/* Carousel Buttons */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.6);
  color: white;
  border: none;
  font-size: 30px;
  padding: 12px 18px;
  cursor: pointer;
  z-index: 10;
}

.carousel-btn.prev {
  left: 15px;
}

.carousel-btn.next {
  right: 15px;
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px;
  padding: 40px 20px 80px;
}

.gallery img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.gallery img:hover {
  transform: scale(1.03);
}

/* Lightbox */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

#lightbox-img {
  max-width: 90%;
  max-height: 90%;
}

/* Mobile */
@media (max-width: 480px) {
  .carousel {
    height: 200px;
  }

  .gallery img {
    height: 180px;
  }

  .site-name {
    font-size: 20px;
  }
}

.site-footer {
  padding: 40px 20px;
  text-align: center;
  color: #777;
  font-size: 14px;
}