/* Custom utilities for The 250 Challenge
   Shared across index.html and all activity pages */

.font-serif { font-family: 'Playfair Display', Georgia, serif !important; }

.stars-bg {
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.18) 1.5px, transparent 1.5px),
    radial-gradient(circle, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 40px 40px, 80px 80px;
  background-position: 0 0, 20px 20px;
}

.img-placeholder {
  background: repeating-linear-gradient(
    -45deg,
    #f3f4f6,
    #f3f4f6 10px,
    #e5e7eb 10px,
    #e5e7eb 20px
  );
}