#loading-splash {
        position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
        background: #f1f5f9; font-family: system-ui, sans-serif; z-index: 9999;
        transition: opacity 0.3s;
      }
      #loading-splash.hide { opacity: 0; pointer-events: none; }
      #loading-splash .spinner { width: 32px; height: 32px; border: 3px solid #e2e8f0; border-top-color: #6366f1; border-radius: 50%; animation: spin 0.7s linear infinite; }
      @keyframes spin { to { transform: rotate(360deg); } }
      #loading-splash .text { margin-top: 16px; color: #64748b; font-size: 14px; text-align: center; }

.splash-center { text-align: center; }
.splash-spin { margin: 0 auto; }