#app{font-family:Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:#333}:root{--primary-color:#1890ff;--primary-gradient:linear-gradient(135deg,#1890ff,#096dd9);--secondary-gradient:linear-gradient(135deg,#667eea,#764ba2);--success-color:#52c41a;--warning-color:#faad14;--error-color:#ff4d4f;--info-color:#13c2c2;--card-bg:#fff;--card-shadow:0 8px 32px rgba(0,0,0,.08);--card-radius:20px;--header-height:70px;--sidebar-width:250px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,sans-serif;background:#f5f7fa}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000;backdrop-filter:blur(5px);animation:fadeIn .3s ease}.modal-content{background:#fff;border-radius:var(--card-radius);padding:30px;width:90%;max-width:500px;animation:slideUp .4s ease;box-shadow:0 20px 60px rgba(0,0,0,.3)}.loading-spinner{width:40px;height:40px;border:3px solid #f3f3f3;border-top:3px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto}.empty-state{text-align:center;padding:60px 20px}.empty-icon{font-size:64px;opacity:.3;margin-bottom:20px;animation:float 3s ease-in-out infinite}