:root{--primary: #6366f1;--primary-dark: #4f46e5;--secondary: #8b5cf6;--bg-dark: #0f172a;--bg-medium: #1e293b;--bg-light: #334155;--bg-card: #2a2a2a;--bg-hover: #333333;--text: #f1f5f9;--text-dim: #94a3b8;--text-secondary: #b0b0b0;--border: #475569;--success: #10b981;--success-dark: #388e3c;--warning: #f59e0b;--shadow: rgba(0, 0, 0, .3)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#0f172a,#1e293b);color:var(--text);line-height:1.6;min-height:100vh;padding:2rem;padding-bottom:100px}.container{max-width:1200px;margin:0 auto}.app-header{text-align:center;margin-bottom:2rem;padding-bottom:1rem}.app-header 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