:root{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;font-weight:400;--primary-color: #2563eb;--primary-hover: #1d4ed8;--secondary-color: #64748b;--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--bg-color: #f8fafc;--surface-color: #ffffff;--text-color: #1e293b;--text-muted: #64748b;--border-color: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: .5rem;color:var(--text-color);background-color:var(--bg-color);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}#root{min-height:100vh;width:100%}.container{max-width:1200px;margin:0 auto;padding:2rem}@media (max-width: 768px){.container{padding:1rem}}.card{background:var(--surface-color);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow-lg);margin-bottom:2rem}.login-card{max-width:400px;margin:4rem auto}.header{text-align:center;margin-bottom:3rem}.header h1{font-size:2.5rem;font-weight:700;color:var(--surface-color);margin-bottom:.5rem;text-shadow:0 2px 4px rgba(0,0,0,.1)}.header p{font-size:1.1rem;color:#ffffffe6;margin:0}@media (max-width: 768px){.header h1{font-size:2rem}.header p{font-size:1rem}}.nav-tabs{display:flex;background:var(--surface-color);border-radius:var(--radius);padding:.25rem;margin-bottom:2rem;box-shadow:var(--shadow-sm)}.nav-tab{flex:1;padding:.75rem 1rem;text-align:center;border:none;background:transparent;border-radius:calc(var(--radius) - 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