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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  background: linear-gradient(135deg, #0a192f, #1a365d, #0f2942);
  min-height: 100vh;
  color: #e0e0e0;
  padding: 2rem 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.content-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
  text-align: center;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
  background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
}

.btn:active {
  transform: translateY(0);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.image-container {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
}

.image-container:hover {
  transform: scale(1.03);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
}

.image-container img {
  width: 100%;
  height: auto;
  display: block;
  transition: opacity 0.3s ease;
}

.image-container:hover img {
  opacity: 0.9;
}

@media (max-width: 768px) {
  body {
    padding: 1rem 0.5rem;
  }

  .button-group {
    gap: 0.75rem;
  }

  .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }

  .image-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* Loading animation for images */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

img {
  animation: fadeIn 0.5s ease-in;
}