.app-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.loader-card{background:#fffffff2;border-radius:16px;padding:48px;box-shadow:0 20px 60px #0000004d;text-align:center;max-width:400px;backdrop-filter:blur(10px);animation:fadeIn .3s ease-in}.loader-icon{margin-bottom:24px}.loader-card h2{margin:0 0 8px;color:#1a202c;font-size:24px;font-weight:600}.loader-card p{margin:0;color:#64748b;.loading-tip{min-height:20px;transition:opacity .3s ease-in-out;animation:tipFade .5s ease-in-out}@keyframes tipFade{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}font-size:14px}.progress-bar{margin-top:24px;height:4px;background:#e2e8f0;border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,#667eea,#764ba2);border-radius:2px;animation:progress 1.5s ease-in-out infinite}.circle-outer{animation:rotate 2s linear infinite;transform-origin:center}.circle-inner{animation:rotate-reverse 1.5s linear infinite;transform-origin:center}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes rotate{to{transform:rotate(360deg)}}@keyframes rotate-reverse{to{transform:rotate(-360deg)}}@keyframes progress{0%{width:0%;transform:translate(0)}50%{width:70%;transform:translate(0)}to{width:100%;transform:translate(0)}}:root{--color-primary: #2563eb;--color-primary-light: #dbeafe;--color-dark: #111827;--color-slate: #475569;--color-light-slate: #cbd5e1;--color-gray: #f3f4f6;--color-white: #ffffff;--color-danger: #ef4444;--color-success: #10b981;--font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--spacing-1: .25rem;--spacing-2: .5rem;--spacing-3: .75rem;--spacing-4: 1rem;--spacing-5: 1.25rem;--spacing-6: 1.5rem;--spacing-8: 2rem;--spacing-12: 3rem;--border-radius: .5rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family-sans);background-color:var(--color-white);color:var(--color-dark);line-height:1.6}#app{min-height:100vh}