:root {
  --fc-primary: #0d6efd;
  --fc-bg-soft: #f8f9fa;
}

body {
  background: var(--fc-bg-soft);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

.tool-card {
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.tool-card:hover,
.tool-card:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border-color: rgba(13, 110, 253, 0.35);
}

/* Skip-link: hidden until focused (accessibility) */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: fixed;
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  background: #0d6efd;
  color: #fff;
  z-index: 9999;
  border-radius: 4px;
}