:root{--primary-color: #6366f1;--primary-dark: #4f46e5;--secondary-color: #8b5cf6;--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--dark-bg: #1f2937;--light-bg: #f9fafb;--text-primary: #111827;--text-secondary: #6b7280;--border-color: #e5e7eb}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%}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-color:var(--light-bg);color:var(--text-primary);line-height:1.6}