🖼️ Image Lightbox

<div class="lightbox-overlay">
  <button class="lightbox-close">×</button>
  <div class="lightbox-content">
    <img src="https://images.unsplash.com/photo-1506905925346-21bda4d32df4?w=800" alt="Image">
  </div>
</div>

.lightbox-overlay {
  position: relative;
  width: 100%;
  min-height: 450px;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border-radius: 8px;
}
.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 10;
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}
.lightbox-content {
  max-width: 90%;
  max-height: 90%;
  animation: lightboxFadeIn 0.3s ease;
}
.lightbox-content img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
@keyframes lightboxFadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

<div class="lightbox-overlay">
  <button class="lightbox-close">×</button>
  <div class="lightbox-caption-content">
    <img src="https://images.unsplash.com/photo-1501785888041-af3ef285b470?w=800" alt="Image">
    <div class="lightbox-caption">
      <h4 class="lightbox-caption-title">Mountain Landscape</h4>
      <p class="lightbox-caption-text">Beautiful mountain view at sunset</p>
    </div>
  </div>
</div>

.lightbox-overlay {
  position: relative;
  width: 100%;
  min-height: 450px;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border-radius: 8px;
}
.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 10;
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}
.lightbox-caption-content {
  max-width: 90%;
  max-height: 90%;
  animation: lightboxFadeIn 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lightbox-caption-content img {
  width: 100%;
  height: auto;
  max-height: 350px;
  object-fit: contain;
  border-radius: 8px 8px 0 0;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.lightbox-caption {
  background: white;
  padding: 1.25rem 1.5rem;
  border-radius: 0 0 8px 8px;
  width: 100%;
  text-align: center;
}
.lightbox-caption-title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a1a2e;
}
.lightbox-caption-text {
  margin: 0;
  font-size: 0.9rem;
  color: #666;
}
@keyframes lightboxFadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

<div class="lightbox-overlay">
  <button class="lightbox-close">×</button>
  <button class="lightbox-nav lightbox-prev">‹</button>
  <button class="lightbox-nav lightbox-next">›</button>
  <div class="lightbox-content">
    <img src="https://images.unsplash.com/photo-1470071459604-3b5ec3a7fe05?w=800" alt="Image">
  </div>
  <div class="lightbox-counter">1 / 5</div>
</div>

.lightbox-overlay {
  position: relative;
  width: 100%;
  min-height: 450px;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border-radius: 8px;
}
.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 10;
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 10;
}
.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
}
.lightbox-prev {
  left: 1rem;
}
.lightbox-next {
  right: 1rem;
}
.lightbox-content {
  max-width: 90%;
  max-height: 90%;
  animation: lightboxFadeIn 0.3s ease;
}
.lightbox-content img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.lightbox-counter {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}
@keyframes lightboxFadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}