:root {
  --color-bg: #1F2A38;
  --color-text: #FFFFFF;
  --color-accent: #00E5FF;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Inter', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}
.site-header, .site-footer {
  padding: 1rem;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header nav a {
  margin-left: 1rem;
  color: var(--color-accent);
  text-decoration: none;
}
.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
  padding: 1rem;
}
.device-card {
  background: #2A3A4E;
  border-radius: 0.5rem;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.device-card:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow);
}
.device-card img {
  display: block;
  width: 100%;
  height: auto;
}
.card-content {
  padding: 0.75rem;
}
.card-content h2 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}
.card-content p {
  margin-bottom: 0.5rem;
}
.card-content .price {
  font-weight: bold;
  color: var(--color-accent);
}

/* Lightbox styles */
#lightbox {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.8);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease;
}
#lightbox.active {
  opacity: 1; visibility: visible;
}
#lightbox img {
  max-width: 90%; max-height: 90%;
}