:root{--color-primary: #4f46e5;--color-accent: #06b6d4;--color-bg: #0f172a;--color-surface: #1e293b;--color-border: #334155;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-error: #f87171;--color-success: #4ade80}*,*:before,*:after{box-sizing:border-box}html{font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.5}body{margin:0;background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}a{color:var(--color-primary)}