/* Optimized poster loading for data and WiFi connections */

/* Base poster styles with lazy loading */
.row__poster {
  object-fit: cover;
  width: 180px;
  height: 260px;
  border-radius: 20px;
  box-shadow: 0 20px 40px #0f172a66;
  transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
  cursor: pointer;
  
  /* Lazy loading placeholder */
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
  background-size: 200% 200%;
  animation: shimmer 1.5s ease-in-out infinite;
  
  /* Performance optimizations */
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
  
  /* Network-aware loading */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* Shimmer loading animation */
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Loaded state - remove shimmer */
.row__poster.loaded {
  animation: none;
  background: none;
}

/* Hover effects */
.row__poster:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px #6366f159;
  filter: brightness(1.1);
}

/* Banner poster optimizations */
.banner__poster {
  width: 260px;
  border-radius: 16px;
  box-shadow: 0 20px 40px #0006;
  
  /* Lazy loading placeholder */
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
  background-size: 200% 200%;
  animation: shimmer 1.5s ease-in-out infinite;
  
  /* Performance optimizations */
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.banner__poster.loaded {
  animation: none;
  background: none;
}

/* Detail poster optimizations */
.detail__poster {
  width: 220px;
  border-radius: 18px;
  box-shadow: 0 20px 40px #00000073;
  
  /* Lazy loading placeholder */
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
  background-size: 200% 200%;
  animation: shimmer 1.5s ease-in-out infinite;
  
  /* Performance optimizations */
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.detail__poster.loaded {
  animation: none;
  background: none;
}

/* Network-aware image quality */
@media (prefers-reduced-data: reduce) {
  .row__poster,
  .banner__poster,
  .detail__poster {
    image-rendering: pixelated;
    filter: contrast(0.9);
  }
}

/* WiFi optimizations - higher quality */
@media (min-resolution: 2dppx) {
  .row__poster,
  .banner__poster,
  .detail__poster {
    image-rendering: -webkit-optimize-contrast;
    filter: contrast(1.05);
  }
}

/* Mobile optimizations - reduce data usage */
@media (max-width: 768px) {
  .row__poster {
    width: 150px;
    height: 220px;
    border-radius: 16px;
  }
  
  .banner__poster {
    width: 200px;
  }
  
  .detail__poster {
    width: 200px;
  }
}

/* Small mobile optimizations */
@media (max-width: 480px) {
  .row__poster {
    width: 120px;
    height: 180px;
    border-radius: 14px;
  }
  
  .banner__poster {
    width: 160px;
  }
  
  .detail__poster {
    width: 170px;
  }
}

/* Intersection Observer for lazy loading support */
.row__poster[data-src],
.banner__poster[data-src],
.detail__poster[data-src] {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.row__poster[data-src].loaded,
.banner__poster[data-src].loaded,
.detail__poster[data-src].loaded {
  opacity: 1;
}

/* Fallback for browsers that don't support lazy loading */
.no-js .row__poster,
.no-js .banner__poster,
.no-js .detail__poster {
  opacity: 1;
}

/* Progressive enhancement - show low-res first */
.row__poster.low-res,
.banner__poster.low-res,
.detail__poster.low-res {
  filter: blur(2px);
  transition: filter 0.3s ease;
}

.row__poster.high-res,
.banner__poster.high-res,
.detail__poster.high-res {
  filter: blur(0);
}

/* Network connection optimizations */
@media (prefers-reduced-data: reduce) {
  .row__poster,
  .banner__poster,
  .detail__poster {
    /* Skip animations for data saving */
    animation: none !important;
    transition: none !important;
  }
}

/* Dark mode optimizations */
@media (prefers-color-scheme: dark) {
  .row__poster,
  .banner__poster,
  .detail__poster {
    /* Better contrast in dark mode */
    filter: brightness(0.95) contrast(1.05);
  }
  
  .row__poster:hover,
  .banner__poster:hover,
  .detail__poster:hover {
    filter: brightness(1.05) contrast(1.1);
  }
}