:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --card-bg: #f5f5f5;
  --card-border: #e0e0e0;
  --accent: #3454d1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14151a;
    --fg: #f0f0f0;
    --muted: #9a9a9a;
    --card-bg: #1e1f26;
    --card-border: #2c2d36;
    --accent: #7c9dff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

header {
  margin-bottom: 2.5rem;
}

header h1 {
  font-size: 2rem;
  margin: 0 0 0.25rem;
}

header p {
  color: var(--muted);
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: inherit;
  text-decoration: none;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.card .icon {
  font-size: 1.75rem;
}

.card .name {
  font-weight: 600;
}

.card .description {
  font-size: 0.875rem;
  color: var(--muted);
}