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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
  color: white;
  padding: 2rem;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1 {
  font-size: 2.5rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

#gallery-container {
  max-width: 95%;
  margin: 2rem auto;
  padding: 0 20px;
}

.day-separator {
  margin: 2rem 0 1rem;
  position: relative;
}

.day-separator hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, transparent, #ddd, transparent);
}

.day-header {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 600;
  color: #2c3e50;
  margin-top: -1.2rem;
}

.day-header div {
  display: inline-block;
  background-color: #f5f7fa;
  padding: 0 15px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 2rem;
}

.gallery-item {
  aspect-ratio: 1/1;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
  cursor: pointer;
}

.gallery-item:hover {
  transform: scale(1.05);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.loading-indicator {
  text-align: center;
  padding: 2rem;
  font-size: 1.2rem;
  color: #7f8c8d;
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}