/* 🌐 Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: sans-serif;
  overflow-x: hidden;
}

/* 🌌 Galaxy Background */
#galaxy {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

/* 📼 VHS Overlay */
#effect {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: screen;
  opacity: 0.3;
  z-index: -1;
  pointer-events: none; /* Prevent unnecessary processing */
}

/* 🖼️ Gallery Grid */
.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  padding: 80px 20px;
  position: relative;
  z-index: 1;
  contain: content; /* 🧠 Performance boost */
}

/* 🖼️ Thumbnail */
.thumb {
  width: 200px;
  height: 200px;
  overflow: hidden;
  border-radius: 10px;
  border: 2px solid #a855f7;
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.4);
  cursor: pointer;
  transition: transform 0.3s ease;
  will-change: transform; /* 🚀 GPU hint */
}

/* 📷 Thumbnail Image */
.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 🔍 Hover Zoom */
.thumb:hover {
  transform: scale(1.08);
}

/* 🖼️ Modal Overlay */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  justify-content: center;
  align-items: center;
}

/* 🖼️ Modal Image */
.modal-content {
  max-width: 90%;
  max-height: 80%;
  border-radius: 10px;
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.6);
}

/* ❌ Close Button */
.closeBtn {
  position: absolute;
  top: 30px;
  right: 40px;
  font-size: 40px;
  color: white;
  cursor: pointer;
  z-index: 1001;
}
/* 💀 Skeleton Loader */
.thumb.skeleton {
  position: relative;
  background-color: #2c2c2c;
  overflow: hidden;
}

.thumb.skeleton::before {
  content: '';
  position: absolute;
  top: 0;
  left: -150px;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #2c2c2c 0%, #3a3a3a 50%, #2c2c2c 100%);
  animation: shimmer 1.2s infinite;
  z-index: 2;
}

.thumb.skeleton img {
  opacity: 0;
}

@keyframes shimmer {
  0% {
    left: -150px;
  }
  100% {
    left: 100%;
  }
}