/* Notebook-grid background (dark) */
html, body, #root, #app { min-height: 100vh; }
body, html {
  background-color: #0a0f1a !important;
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px) !important;
  background-size: 28px 28px !important;
  background-attachment: fixed !important;
}
body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 140px 140px;
  z-index: 0;
}
#root, #app { position: relative; z-index: 1; }