body { font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
.card { transition: all 0.3s; }
.card:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.15) !important; }
.builder-card { border-radius: 16px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); }
.preview-frame { border: 3px solid #0d6efd; border-radius: 12px; min-height: 600px; background: white; }