*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:#f5f5f5;margin:0;padding:0;min-height:100vh}#app{min-height:100vh}.app-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.app-loading .loading-spinner{width:48px;height:48px;border:4px solid rgba(255,255,255,.3);border-top:4px solid white;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}.app-loading p{font-size:16px;opacity:.9}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}