/* ===== Base Grid Styles ===== */
.dynamic-grid {
  display: grid;
  grid-gap: 15px;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  grid-auto-rows: 200px;
  grid-auto-flow: dense;
  margin: 2rem auto;
  max-width: 1200px;
  padding: 0 15px;
}

.dynamic-grid > div {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: #f5f5f5;
  animation: fadeIn 0.5s ease forwards;
  opacity: 0;
  cursor: zoom-in;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dynamic-grid > div:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.dynamic-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

/* ===== Dynamic Layout Classes ===== */
.dynamic-grid .wide {
  grid-column: span 2;
}

.dynamic-grid .tall {
  grid-row: span 2;
}

.dynamic-grid .big {
  grid-column: span 2;
  grid-row: span 2;
}

/* ===== Loading States ===== */
@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

.loading-shimmer {
  background: linear-gradient(to right, #f5f5f5 0%, #e8e8e8 50%, #f5f5f5 100%);
  background-size: 1000px 100%;
  animation: shimmer 1.5s infinite linear;
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* ===== Zoom Modal Styles ===== */
.zoom-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn 0.3s ease forwards;
  overflow: hidden;
  touch-action: none;
}

.zoom-content {
  position: absolute;
  max-width: 90%;
  max-height: 80%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  cursor: zoom-out;
  transition: transform 0.3s cubic-bezier(0.2, 0, 0.2, 1);
}

.zoom-content.zoomed {
  transform: translate(-50%, -50%) scale(1.8);
  cursor: grab;
}

.zoom-content.zoomed:active {
  cursor: grabbing;
}

.zoom-modal .close-btn {
  position: absolute;
  top: 25px;
  right: 30px;
  color: white;
  font-size: 40px;
  font-weight: 300;
  cursor: pointer;
  z-index: 1001;
  transition: transform 0.2s ease;
  opacity: 0.8;
}

.zoom-modal .close-btn:hover {
  transform: scale(1.2);
  opacity: 1;
}

.zoom-caption {
  position: absolute;
  bottom: 30px;
  left: 0;
  right: 0;
  color: white;
  text-align: center;
  padding: 15px;
  font-size: 18px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 1024px) {
  .dynamic-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    grid-auto-rows: 180px;
  }

  .zoom-content {
    max-width: 95%;
    max-height: 85%;
  }
}

@media (max-width: 768px) {
  .dynamic-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    grid-auto-rows: 150px;
    grid-gap: 10px;
  }

  .dynamic-grid .wide,
  .dynamic-grid .big {
    grid-column: span 1;
  }

  .dynamic-grid .tall {
    grid-row: span 1;
  }

  .zoom-content {
    max-width: 98%;
    max-height: 90%;
  }

  .zoom-modal .close-btn {
    top: 15px;
    right: 20px;
    font-size: 35px;
  }
}

@media (max-width: 480px) {
  .dynamic-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    grid-auto-rows: 120px;
  }

  .zoom-caption {
    font-size: 16px;
    bottom: 20px;
    padding: 10px;
  }
}

/* ===== Accessibility Improvements ===== */
.dynamic-grid img[alt]:not([alt=""]) {
  position: relative;
}

.dynamic-grid img[alt]:not([alt=""]):after {
  content: attr(alt);
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 5px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  font-size: 12px;
  text-align: center;
}

/* ===== Smooth Scrolling ===== */
html {
  scroll-behavior: smooth;
}